qt/qttools.git - Qt Tools

diff options

author	Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>	2021-10-21 09:07:19 +0000
committer	Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>	2021-10-21 09:07:35 +0000
commit	6334fa86cd03d6aed4adc07093ef147e34816a02 (patch)
tree	5ceb0d6b441ce71c5ad0239171225d4fba9b41c1
parent	d75a9b20a6699a5a869bb2c7fbe3a6643ff51bff (diff)

Update dependencies on '6.2.1' in qt/qttoolsv6.2.1

Change-Id: I1012068aa0dd8bc90beeda91d1f7f9914bb1cded Reviewed-by: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>

Diffstat

-rw-r--r--

dependencies.yaml

1 files changed, 3 insertions, 3 deletions

7 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662 5663 5664 5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684 5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696 5697 5698 5699 5700 5701 5702 5703 5704 5705 5706 5707 5708 5709 5710 5711 5712 5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736 5737 5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960 5961 5962 5963 5964 5965 5966 5967 5968 5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991 5992 5993 5994 5995 5996 5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045 6046 6047 6048 6049 6050 6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073 6074 6075 6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121 6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314 6315 6316 6317 6318 6319 6320 6321 6322 6323 6324 6325 6326 6327 6328 6329 6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341 6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364 6365 6366 6367 6368 6369 6370 6371 6372 6373 6374 6375 6376 6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388 6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528 6529 6530 6531 6532 6533 6534 6535 6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605 6606 6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631 6632 6633 6634 6635 6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749 6750 6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761 6762 6763 6764 6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777 6778 6779 6780 6781 6782 6783 6784 6785 6786 6787 6788 6789 6790 6791 6792 6793 6794 6795 6796 6797 6798 6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894 6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925 6926 6927 6928 6929 6930 6931 6932 6933 6934 6935 6936 6937 6938 6939 6940 6941 6942 6943 6944 6945 6946 6947 6948 6949 6950 6951 6952 6953 6954 6955 6956 6957 6958 6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979 6980 6981 6982 6983 6984 6985 6986 6987 6988 6989 6990 6991 6992 6993 6994 6995 6996 6997 6998 6999 7000 7001 7002 7003 7004 7005 7006 7007 7008 7009 7010 7011 7012 7013 7014 7015 7016 7017 7018 7019 7020 7021 7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063 7064 7065 7066 7067 7068 7069 7070 7071 7072 7073 7074 7075 7076 7077 7078 7079 7080 7081 7082 7083 7084 7085 7086 7087 7088 7089 7090 7091 7092 7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138 7139 7140 7141 7142 7143 7144 7145 7146 7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163 7164 7165 7166 7167 7168 7169 7170 7171 7172 7173 7174 7175 7176 7177 7178 7179 7180 7181 7182 7183 7184 7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200 7201 7202 7203 7204 7205 7206 7207 7208 7209 7210 7211 7212 7213 7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241 7242 7243 7244 7245 7246 7247 7248 7249 7250 7251 7252 7253 7254 7255 7256 7257 7258 7259 7260 7261 7262 7263 7264 7265 7266 7267 7268 7269 7270 7271 7272 7273 7274 7275 7276 7277 7278 7279 7280 7281 7282 7283 7284 7285 7286 7287 7288 7289 7290 7291 7292 7293 7294 7295 7296 7297 7298 7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309 7310 7311 7312 7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332 7333 7334 7335 7336 7337 7338 7339 7340 7341 7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464 7465 7466 7467 7468 7469 7470 7471 7472 7473 7474 7475 7476 7477 7478 7479 7480 7481 7482 7483 7484 7485 7486 7487 7488 7489 7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510 7511 7512 7513 7514 7515 7516 7517 7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559 7560 7561 7562 7563 7564 7565 7566 7567 7568 7569 7570 7571 7572 7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583 7584 7585 7586 7587 7588 7589 7590 7591 7592 7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603 7604 7605 7606 7607 7608 7609 7610 7611 7612 7613 7614 7615 7616 7617 7618 7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629 7630 7631 7632 7633 7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648 7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665 7666 7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693 7694 7695 7696 7697 7698 7699 7700 7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719 7720 7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763 7764 7765 7766 7767 7768 7769 7770 7771 7772 7773 7774 7775 7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792 7793 7794 7795 7796 7797 7798 7799 7800 7801 7802 7803 7804 7805 7806 7807 7808 7809 7810 7811 7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826 7827 7828 7829 7830 7831 7832 7833 7834 7835 7836 7837 7838 7839 7840 7841 7842 7843 7844 7845 7846 7847 7848 7849 7850 7851 7852 7853 7854 7855 7856 7857 7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882 7883 7884 7885 7886 7887 7888 7889 7890 7891 7892 7893 7894 7895 7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907 7908 7909 7910 7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 7921 7922 7923 7924 7925 7926 7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937 7938 7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953 7954 7955 7956 7957 7958 7959 7960 7961 7962 7963 7964 7965 7966 7967 7968 7969 7970 7971 7972 7973 7974 7975 7976 7977 7978 7979 7980 7981 7982 7983 7984 7985 7986 7987 7988 7989 7990 7991 7992 7993 7994 7995 7996 7997 7998 7999 8000 8001 8002 8003 8004 8005 8006 8007 8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065 8066 8067 8068 8069 8070 8071 8072 8073 8074 8075 8076 8077 8078 8079 8080 8081 8082 8083 8084 8085 8086 8087 8088 8089 8090 8091 8092 8093 8094 8095 8096 8097 8098 8099 8100 8101 8102 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114 8115 8116 8117 8118 8119 8120 8121 8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137 8138 8139 8140 8141 8142 8143 8144 8145 8146 8147 8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158 8159 8160 8161 8162 8163 8164 8165 8166 8167 8168 8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216 8217 8218 8219 8220 8221 8222 8223 8224 8225 8226 8227 8228 8229 8230 8231 8232 8233 8234 8235 8236 8237 8238 8239 8240 8241 8242 8243 8244 8245 8246 8247 8248 8249 8250 8251 8252 8253 8254 8255 8256 8257 8258 8259 8260 8261 8262 8263 8264 8265 8266 8267 8268 8269 8270 8271 8272 8273 8274 8275 8276 8277 8278 8279 8280 8281 8282 8283 8284 8285 8286 8287 8288 8289 8290 8291 8292 8293 8294 8295 8296 8297 8298 8299 8300 8301 8302 8303 8304 8305 8306 8307 8308 8309 8310 8311 8312 8313 8314 8315 8316 8317 8318 8319 8320 8321 8322 8323 8324 8325 8326 8327 8328 8329 8330 8331 8332 8333 8334 8335 8336 8337 8338 8339 8340 8341 8342 8343 8344 8345 8346 8347 8348 8349 8350 8351 8352 8353 8354 8355 8356 8357 8358 8359 8360 8361 8362 8363 8364 8365 8366 8367 8368 8369 8370 8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382 8383 8384 8385 8386 8387 8388 8389 8390 8391 8392 8393 8394 8395 8396 8397 8398 8399 8400 8401 8402 8403 8404 8405 8406 8407 8408 8409 8410 8411 8412 8413 8414 8415 8416 8417 8418 8419 8420 8421 8422 8423 8424 8425 8426 8427 8428 8429 8430 8431 8432 8433 8434 8435 8436 8437 8438 8439 8440 8441 8442 8443 8444 8445 8446 8447 8448 8449 8450 8451 8452 8453 8454 8455 8456 8457 8458 8459 8460 8461 8462 8463 8464 8465 8466 8467 8468 8469 8470 8471 8472 8473 8474 8475 8476 8477 8478 8479 8480 8481 8482 8483 8484 8485 8486 8487 8488 8489 8490 8491 8492 8493 8494 8495 8496 8497 8498 8499 8500 8501 8502 8503 8504 8505 8506 8507 8508 8509 8510 8511 8512 8513 8514 8515 8516 8517 8518 8519 8520 8521 8522 8523 8524 8525 8526 8527 8528 8529 8530 8531 8532 8533 8534 8535 8536 8537 8538 8539 8540 8541 8542 8543 8544 8545 8546 8547 8548 8549 8550 8551 8552 8553 8554 8555 8556 8557 8558 8559 8560 8561 8562 8563 8564 8565 8566 8567 8568 8569 8570 8571 8572 8573 8574 8575 8576 8577 8578 8579 8580 8581 8582 8583 8584 8585 8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 8597 8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620 8621 8622 8623 8624 8625 8626 8627 8628 8629 8630 8631 8632 8633 8634 8635 8636 8637 8638 8639 8640 8641 8642 8643 8644 8645 8646 8647 8648 8649 8650 8651 8652 8653 8654 8655 8656 8657 8658 8659 8660 8661 8662 8663 8664 8665 8666 8667 8668 8669 8670 8671 8672 8673 8674 8675 8676 8677 8678 8679 8680 8681 8682 8683 8684 8685 8686 8687 8688 8689 8690 8691 8692 8693 8694 8695 8696 8697 8698 8699 8700 8701 8702 8703 8704 8705 8706 8707 8708 8709 8710 8711 8712 8713 8714 8715 8716 8717 8718 8719 8720 8721 8722 8723 8724 8725 8726 8727 8728 8729 8730 8731 8732 8733 8734 8735 8736 8737 8738 8739 8740 8741 8742 8743 8744 8745 8746 8747 8748 8749 8750 8751 8752 8753 8754 8755 8756 8757 8758 8759 8760 8761 8762 8763 8764 8765 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779 8780 8781 8782 8783 8784 8785 8786 8787 8788 8789 8790 8791 8792 8793 8794 8795 8796 8797 8798 8799 8800 8801 8802 8803 8804 8805 8806 8807 8808 8809 8810 8811 8812 8813 8814 8815 8816 8817 8818 8819 8820 8821 8822 8823 8824 8825 8826 8827 8828 8829 8830 8831 8832 8833 8834 8835 8836 8837 8838 8839 8840 8841 8842 8843 8844 8845 8846 8847 8848 8849 8850 8851 8852 8853 8854 8855 8856 8857 8858 8859 8860 8861 8862 8863 8864 8865 8866 8867 8868 8869 8870 8871 8872 8873 8874 8875 8876 8877 8878 8879 8880 8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893 8894 8895 8896 8897 8898 8899 8900 8901 8902 8903 8904 8905 8906 8907 8908 8909 8910 8911 8912 8913 8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932 8933 8934 8935 8936 8937 8938 8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953 8954 8955 8956 8957 8958 8959 8960 8961 8962 8963 8964 8965 8966 8967 8968 8969 8970 8971 8972 8973 8974 8975 8976 8977 8978 8979 8980 8981 8982 8983 8984 8985 8986 8987 8988 8989 8990 8991 8992 8993 8994 8995 8996 8997 8998 8999 9000 9001 9002 9003 9004 9005 9006 9007 9008 9009 9010 9011 9012 9013 9014 9015 9016 9017 9018 9019 9020 9021 9022 9023 9024 9025 9026 9027 9028 9029 9030 9031 9032 9033 9034 9035 9036 9037 9038 9039 9040 9041 9042 9043 9044 9045 9046 9047 9048 9049 9050 9051 9052 9053 9054 9055 9056 9057 9058 9059 9060 9061 9062 9063 9064 9065 9066 9067 9068 9069 9070 9071 9072 9073 9074 9075 9076 9077 9078 9079 9080 9081 9082 9083 9084 9085 9086 9087 9088 9089 9090 9091 9092 9093 9094 9095 9096 9097 9098 9099 9100 9101 9102 9103 9104 9105 9106 9107 9108 9109 9110 9111 9112 9113 9114 9115 9116 9117 9118 9119 9120 9121 9122 9123 9124 9125 9126 9127 9128 9129 9130 9131 9132 9133 9134 9135 9136 9137 9138 9139 9140 9141 9142 9143 9144 9145 9146 9147 9148 9149 9150 9151 9152 9153 9154 9155 9156 9157 9158 9159 9160 9161 9162 9163 9164 9165 9166 9167 9168 9169 9170 9171 9172 9173 9174 9175 9176 9177 9178 9179 9180 9181 9182 9183 9184 9185 9186 9187 9188 9189 9190 9191 9192 9193 9194 9195 9196 9197 9198 9199 9200 9201 9202 9203 9204 9205 9206 9207 9208 9209 9210 9211 9212 9213 9214 9215 9216 9217 9218 9219 9220 9221 9222 9223 9224 9225 9226 9227 9228 9229 9230 9231 9232 9233 9234 9235 9236 9237 9238 9239 9240 9241 9242 9243 9244 9245 9246 9247 9248 9249 9250 9251 9252 9253 9254 9255 9256 9257 9258 9259 9260 9261 9262 9263 9264 9265 9266 9267 9268 9269 9270 9271 9272 9273 9274 9275 9276 9277 9278 9279 9280 9281 9282 9283 9284 9285 9286 9287 9288 9289 9290 9291 9292 9293 9294 9295 9296 9297 9298 9299 9300 9301 9302 9303 9304 9305 9306 9307 9308 9309 9310 9311 9312 9313 9314 9315 9316 9317 9318 9319 9320 9321 9322 9323 9324 9325 9326 9327 9328 9329 9330 9331 9332 9333 9334 9335 9336 9337 9338 9339 9340 9341 9342 9343 9344 9345 9346 9347 9348 9349 9350 9351 9352 9353 9354 9355 9356 9357 9358 9359 9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374 9375 9376 9377 9378 9379 9380 9381 9382 9383 9384 9385 9386 9387 9388 9389 9390 9391 9392 9393 9394 9395 9396 9397 9398 9399 9400 9401 9402 9403 9404 9405 9406 9407 9408 9409 9410 9411 9412 9413 9414 9415 9416 9417 9418 9419 9420 9421 9422 9423 9424 9425 9426 9427 9428 9429 9430 9431 9432 9433 9434 9435 9436 9437 9438 9439 9440 9441 9442 9443 9444 9445 9446 9447 9448 9449 9450 9451 9452 9453 9454 9455 9456 9457 9458 9459 9460 9461 9462 9463 9464 9465 9466 9467 9468 9469 9470 9471 9472 9473 9474 9475 9476 9477 9478 9479 9480 9481 9482 9483 9484 9485 9486 9487 9488 9489 9490 9491 9492 9493 9494 9495 9496 9497 9498 9499 9500 9501 9502 9503 9504 9505 9506 9507 9508 9509 9510 9511 9512 9513 9514 9515 9516 9517 9518 9519 9520 9521 9522 9523 9524 9525 9526 9527 9528 9529 9530 9531 9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 9544 9545 9546 9547 9548 9549 9550 9551 9552 9553 9554 9555 9556 9557 9558 9559 9560 9561 9562 9563 9564 9565 9566 9567 9568 9569 9570 9571 9572 9573 9574 9575 9576 9577 9578 9579 9580 9581 9582 9583 9584 9585 9586 9587 9588 9589 9590 9591 9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604 9605 9606 9607 9608 9609 9610 9611 9612 9613 9614 9615 9616 9617 9618 9619 9620 9621 9622 9623 9624 9625 9626 9627 9628 9629 9630 9631 9632 9633 9634 9635 9636 9637 9638 9639 9640 9641 9642 9643 9644 9645 9646 9647 9648 9649 9650 9651 9652 9653 9654 9655 9656 9657 9658 9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669 9670 9671 9672 9673 9674 9675 9676 9677 9678 9679 9680 9681 9682 9683 9684 9685 9686 9687 9688 9689 9690 9691 9692 9693 9694 9695 9696 9697 9698 9699 9700 9701 9702 9703 9704 9705 9706 9707 9708 9709 9710 9711 9712 9713 9714 9715 9716 9717 9718 9719 9720 9721 9722 9723 9724 9725 9726 9727 9728 9729 9730 9731 9732 9733 9734 9735 9736 9737 9738 9739 9740 9741 9742 9743 9744 9745 9746 9747 9748 9749 9750 9751 9752 9753 9754 9755 9756 9757 9758 9759 9760 9761 9762 9763 9764 9765 9766 9767 9768 9769 9770 9771 9772 9773 9774 9775 9776 9777 9778 9779 9780 9781 9782 9783 9784 9785 9786 9787 9788 9789 9790 9791 9792 9793 9794 9795 9796 9797 9798 9799 9800 9801 9802 9803 9804 9805 9806 9807 9808 9809 9810 9811 9812 9813 9814 9815 9816 9817 9818 9819 9820 9821 9822 9823 9824 9825 9826 9827 9828 9829 9830 9831 9832 9833 9834 9835 9836 9837 9838 9839 9840 9841 9842 9843 9844 9845 9846 9847 9848 9849 9850 9851 9852 9853 9854 9855 9856 9857 9858 9859 9860 9861 9862 9863 9864 9865 9866 9867 9868 9869 9870 9871 9872 9873 9874 9875 9876 9877 9878 9879 9880 9881 9882 9883 9884 9885 9886 9887 9888 9889 9890 9891 9892 9893 9894 9895 9896 9897 9898 9899 9900 9901 9902 9903 9904 9905 9906 9907 9908 9909 9910 9911 9912 9913 9914 9915 9916 9917 9918 9919 9920 9921 9922 9923 9924 9925 9926 9927 9928 9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945 9946 9947 9948 9949 9950 9951 9952 9953 9954 9955 9956 9957 9958 9959 9960 9961 9962 9963 9964 9965 9966 9967 9968 9969 9970 9971 9972 9973 9974 9975 9976 9977 9978 9979 9980 9981 9982 9983 9984 9985 9986 9987 9988 9989 9990 9991 9992 9993 9994 9995 9996 9997 9998 9999 10000 10001 10002 10003 10004 10005 10006 10007 10008 10009 10010 10011 10012 10013 10014 10015 10016 10017 10018 10019 10020 10021 10022 10023 10024 10025 10026 10027 10028 10029 10030 10031 10032 10033 10034 10035 10036 10037 10038 10039 10040 10041 10042 10043 10044 10045 10046 10047 10048 10049 10050 10051 10052 10053 10054 10055 10056 10057 10058 10059 10060 10061 10062 10063 10064 10065 10066 10067 10068 10069 10070 10071 10072 10073 10074 10075 10076 10077 10078 10079 10080 10081 10082 10083 10084 10085 10086 10087 10088 10089 10090 10091 10092 10093 10094 10095 10096 10097 10098 10099 10100 10101 10102 10103 10104 10105 10106 10107 10108 10109 10110 10111 10112 10113 10114 10115 10116 10117 10118 10119 10120 10121 10122 10123 10124 10125 10126 10127 10128 10129 10130 10131 10132 10133 10134 10135 10136 10137 10138 10139 10140 10141 10142 10143 10144 10145 10146 10147 10148 10149 10150 10151 10152 10153 10154 10155 10156 10157 10158 10159 10160 10161 10162 10163 10164 10165 10166 10167 10168 10169 10170 10171 10172 10173 10174 10175 10176 10177 10178

/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "q3dsscenemanager_p.h"
#include "q3dsengine_p.h"
#include "q3dsdefaultmaterialgenerator_p.h"
#include "q3dscustommaterialgenerator_p.h"
#include "q3dstextmaterialgenerator_p.h"
#include "q3dsdistancefieldmaterialgenerator_p.h"
#include "q3dstextrenderer_p.h"
#include "q3dstextmesh_p.h"
#include "q3dsfontdatabase_p.h"
#include "q3dsdistancefieldglyphcachemanager_p.h"
#include "q3dsdistancefieldglyphcache_p.h"
#include "q3dsutils_p.h"
#include "q3dsprofiler_p.h"
#include "shadergenerator/q3dsshadermanager_p.h"
#include "q3dsslideplayer_p.h"
#include "q3dsslideplayerng_p.h"
#include "q3dsimagemanager_p.h"
#include "q3dslogging_p.h"
#include "q3dsviewportsettings_p.h"
#include "q3dstextmesh_p.h"
#include "q3dsimagemanager_p.h"
#if QT_CONFIG(q3ds_profileui)
#include "profileui/q3dsprofileui_p.h"
#include "q3dsconsolecommands_p.h"
#endif

#include <QDir>
#include <QLoggingCategory>
#include <QStack>
#include <qmath.h>
#include <QTextLayout>
#include <QOpenGLContext>
#include <QTimer>

#include <Qt3DCore/QEntity>
#include <Qt3DCore/QTransform>

#include <Qt3DRender/QRenderSettings>
#include <Qt3DRender/QRenderSurfaceSelector>
#include <Qt3DRender/QRenderTargetSelector>
#include <Qt3DRender/QRenderTarget>
#include <Qt3DRender/QLayerFilter>
#include <Qt3DRender/QLayer>
#include <Qt3DRender/QCamera>
#include <Qt3DRender/QCameraSelector>
#include <Qt3DRender/QViewport>
#include <Qt3DRender/QClearBuffers>
#include <Qt3DRender/QSortPolicy>
#include <Qt3DRender/QTexture>
#include <Qt3DRender/QTextureImage>
#include <Qt3DRender/QPaintedTextureImage>
#include <Qt3DRender/QMaterial>
#include <Qt3DRender/QParameter>
#include <Qt3DRender/QEffect>
#include <Qt3DRender/QTechnique>
#include <Qt3DRender/QTechniqueFilter>
#include <Qt3DRender/QGraphicsApiFilter>
#include <Qt3DRender/QRenderPass>
#include <Qt3DRender/QRenderPassFilter>
#include <Qt3DRender/QRenderStateSet>
#include <Qt3DRender/QFilterKey>
#include <Qt3DRender/QNoDraw>
#include <Qt3DRender/QFrontFace>
#include <Qt3DRender/QBlendEquation>
#include <Qt3DRender/QBlendEquationArguments>
#include <Qt3DRender/QDepthTest>
#include <Qt3DRender/QNoDepthMask>
#include <Qt3DRender/QColorMask>
#include <Qt3DRender/QShaderProgram>
#include <Qt3DRender/QBuffer>
#include <Qt3DRender/QBlitFramebuffer>
#include <Qt3DRender/QStencilTest>
#include <Qt3DRender/QStencilTestArguments>
#include <Qt3DRender/QStencilMask>
#include <Qt3DRender/QStencilOperation>
#include <Qt3DRender/QStencilOperationArguments>
#include <Qt3DRender/QScissorTest>
#include <Qt3DRender/QRayCaster>

#include <Qt3DRender/private/qpaintedtextureimage_p.h>

#include <Qt3DAnimation/QClipAnimator>
#include <Qt3DAnimation/qclock.h>

#include <Qt3DExtras/QPlaneMesh>

#include <Qt3DLogic/QFrameAction>

#include <QtQuick/private/qsgdefaultdistancefieldglyphcache_p.h>

QT_BEGIN_NAMESPACE

static const int LAYER_CACHING_THRESHOLD = 4;

/*
    Approx. scene structure:

    // m_rootEntity when params.window
    Entity {
        components: [
            RenderSettings {
                activeFrameGraph: RenderSurfaceSelector { // frameGraphRoot when params.window

                    * Normally there would be a LayerFilter here with DiscardAnyMatchingLayers for m_guiData.guiTag
                    * covering everything up to the profiling gui subtree. However, we only have LayerFilter/NoDraw/DispatchCompute
                    * leaves that exclude gui entities by nature.

                    FrameGraphNode { // subPresFrameGraphRoot
                        NoDraw { }
                        // [rest may be missing when there are no subpresentations]
                        // Subpresentation #1 framegraph, same structure as below (1..N layer + compositor).
                        RenderTargetSelector { // frameGraphRoot when !params.window
                            // Due to only having LayerFilter (or NoDraw) leaves with (3DS-)layer or SceneManager specific
                            // QLayer tags, selection of the right entities for a subpresentation works automatically.
                        }
                        // Subpresentation #2 framegraph
                        RenderTargetSelector { ... }
                        ...
                    }

                    FrameGraphNode { // layerContainerFg
                        // Due to layer caching children may appear and disappear at any time, and while the order relative
                        // to each other does not matter, they must never be placed after the compositor subtree. Hence the need
                        // for a "container" node here too.
                        NoDraw { }

                        // Layer #1 framegraph
                        FrameGraphNode { // layer subtree root, children may get added/deleted dynamically due to progressive AA for example
                            // main layer framegraph, always present
                            RenderTargetSelector { Viewport { CameraSelector {
                                // objects in the scene will be tagged with these. note
                                // that entities without geometryrenderers will have
                                // both so that we do not lose the transforms.
                                Layer { id: layer1Opaque }
                                Layer { id: layer1Transparent }

                                // 0.1 optional texture prefiltering via compute [not currently implemented, although material provides renderpass already]
                                TechniqueFilter {
                                    matchAll: [ FilterKey { name: "type"; value: "bsdfPrefilter"} ]
                                    NoDraw { }
                                    // [creation of the rest below is deferred]
                                    DispatchCompute {
                                       ... // with appropriate technique filter
                                    }
                                }

                                TechniqueFilter {
                                    matchAll: [ FilterKey { name: "type"; value: "main"} ]

                                    // 1.1 optional depth texture generation
                                    RenderTargetSelector {
                                        NoDraw { } // so that we do not issue drawcalls when depth texture is not needed
                                        // [creation of the rest below is deferred]
                                        ... // depth texture (depth attachment only)
                                        ClearBuffers {
                                            // depth clear
                                            enabled: when depth texture is needed
                                            NoDraw { }
                                        }
                                        RenderPassFilter {
                                            matchAny: [ FilterKey { name: "pass"; value: "depth" } ]
                                            LayerFilter {
                                                layers: [ layer1Opaque ] or empty list if depth texture gets disabled afterwards
                                            }
                                        }
                                        RenderPassFilter {
                                            matchAny: [ FilterKey { name: "pass"; value: "depth" } ]
                                            SortPolicy {
                                                sortTypes: [ SortPolicy.BackToFront ]
                                                LayerFilter {
                                                    layers: [ layer1Transparent ] or empty list if depth texture gets disabled afterwards
                                                }
                                            }
                                        }
                                    }

                                    // 1.2 optional SSAO texture generation (depends on depth texture)
                                    RenderTargetSelector {
                                        NoDraw { } // so that we do not issue drawcalls when depth texture is not needed
                                        // [creation of the rest below is deferred]
                                        ... // color attachment only, rgba8 texture
                                        ClearBuffers {
                                            // color clear
                                            enabled: when ssao is enabled
                                            NoDraw { }
                                        }
                                        RenderPassFilter {
                                            matchAny: [ FilterKey { name: "pass"; value: "ssao" } ]
                                            LayerFilter {
                                                layers: [ fsQuad ] or empty list if ssao gets disabled afterwards
                                            }
                                        }
                                    }

                                    // 1.3 optional shadow map generation
                                    FrameGraphNode {
                                        NoDraw { } // so that we do not issue drawcalls when there are no shadow casting lights in the scene
                                        // [the creation of the rest is deferred and is *repeated for each shadow casting light* hence the need for a dummy FrameGraphNode as our sub-root ]
                                        FrameGraphNode { // per-light sub-tree root
                                            for each cubemap face (if cubemap is used):
                                                RenderTargetSelector {
                                                    ... // per-light shadow map texture (2d or cubemap) of R16 as color, throwaway depth-stencil; select the current face when cubemap
                                                    Viewport {
                                                        ClearBuffers {
                                                            NoDraw { }
                                                        }
                                                        RenderPassFilter {
                                                            matchAny: [ FilterKey { name: "pass"; value: "shadowCube" } ] // or "shadowOrtho" depending on the light type
                                                            LayerFilter {
                                                                layers: [ layer1Opaque ]
                                                            }
                                                        }
                                                        RenderPassFilter {
                                                            matchAny: [ FilterKey { name: "pass"; value: "shadowCube" } ] // or "shadowOrtho" depending on the light type
                                                            SortPolicy {
                                                                sortTypes: [ SortPolicy.BackToFront ]
                                                                LayerFilter {
                                                                    layers: [ layer1Transparent ] or empty list when depth texture is not needed
                                                                }
                                                            }
                                                        }
                                                    }
                                                }
                                            // cubemap blur X
                                            RenderTargetSelector {
                                                ... // input is 6 cubemap faces attached to color0-5, output is another cubemap
                                                RenderPassFilter {
                                                    matchAny: [ FilterKey { name: "pass"; value: "shadowCubeBlurX" } ]
                                                    LayerFilter {
                                                        layers: [ fsQuad ]
                                                    }
                                                }
                                            }
                                            // repeat for cubemap blur Y
                                            RenderTargetSelector {
                                                ...
                                            }
                                            ... // repeat for orthographic blur, concept is the same, input/output is a 2d texture, passes are shadowOrthoBlurX and Y
                                        }
                                    }

                                    // 2. main clear
                                    ClearBuffers {
                                        NoDraw { }
                                    }

                                    // 3. depth pre-pass, optional depending on layer flags
                                    RenderPassFilter {
                                        matchAny: [ FilterKey { name: "pass"; value: "depth" } ]
                                        LayerFilter {
                                            layers: [ layer1Opaque ] or empty list when DisableDepthPrePass is set
                                        }
                                    }

                                    // 4. opaque pass
                                    RenderPassFilter {
                                        matchAny: [ FilterKey { name: "pass"; value: "opaque" } ]
                                        LayerFilter {
                                            layers: [ layer1Opaque ]
                                        }
                                    }

                                    // 5. transparent pass
                                    RenderPassFilter {
                                        matchAny: [ FilterKey { name: "pass"; value: "transparent" } ]
                                        SortPolicy {
                                            sortTypes: [ SortPolicy.BackToFront ]
                                            LayerFilter {
                                                layers: [ layer1Transparent ]
                                            }
                                        }
                                    }

                                    // 6. Post-processing effect passes
                                    FrameGraphNode {
                                        NoDraw { } [so that the rest below can be added/deleted dynamically]
                                        // effect 1 pass 1
                                        RenderTargetSelector {
                                            // input is either layerTexture or the output of another pass
                                            // output is either effLayerTexture or one of the intermediate textures
                                            [BlitFramebuffer - NoDraw] ... // from BufferBlit commands or to resolve samples when layer is MSAA
                                            LayerFilter {
                                                layers: [ layer1_eff1_pass1_quad_tag ]
                                                // said quad has a single renderpass with the desired material and render states
                                            }
                                        }
                                        // effect 1 pass 2, ..., effect 2 pass 1, etc.
                                        ...
                                    }
                                }
                            } } }

                            // Optional progressive AA pass, depends on the texture from the main layer pass
                            RenderTargetSelector {
                                ... // draw a quad using layer texture + accumulator texture with the prog AA blend shader
                            }
                        }

                        // Layer #2 framegraph
                        FrameGraphNode {
                            // main
                            RenderTargetSelector {
                                ... // like above in layer #1
                            }
                            // prog. AA
                            [RenderTargetSelector { ... } ]
                        }

                        ... // layer #3, #4, etc.
                    }

                    // compositor framegraph
                    LayerFilter {
                        Layer { id: compositorTag }
                        layers: [ compositorTag ]
                        ... // see buildCompositor()
                    }

                    // Profiling gui framegraph (once only, not included again for subpresentations)
                    TechniqueFilter { CameraSelector { SortPolicy { LayerFilter { layers: [activeGuiTag] } } } }
                }
            },
            ... // InputSettings etc. these are not handled by SceneManager
        ]

        // compositorEntity
        Entity { ... } // tagged with compositorTag

        // fullscreen quad for orthographic and cube shadow blurs and SSAO texture generation
        Entity {
            ... // tagged with fsQuadTag
            material component has renderpasses with keys:
              shadowOrthoBlurX, shadowOrthoBlurY
              shadowCubeBlurX, shadowCubeBlurY
              ssao
        }

        Entity { // m_rootEntity for a SceneManager with !params.window
           ... // subpresentation compositor and fs quad entities like above
        }
        ...

        // profiling gui entities
        Entity { ... } // tagged with guiTag
    }

    Entities for one (3DS) layer live under a per-layer root entity parented to
    the RenderTargetSelector corresponding to that layer.

    Generic materials are expected to provide a technique with a number of render passes.
    Specialized materials may drop some of the passes (e.g. text only provides transparent).

    filterKeys: [ FilterKey { name: "type"; value: "main" } ]
    renderPasses: [
        RenderPass {
            filterKeys: [ FilterKey { id: depthKey; name: "pass"; value: "depth" } ]
            renderStates: [
                DepthTest {
                    depthFunction: DepthTest.LessOrEqual
                },
                ColorMask {
                    redMasked: false; greenMasked: false; blueMasked: false; alphaMasked: false
                }
            ]
            ...
        },
        RenderPass {
            filterKeys: [ FilterKey { id: shadowOrthoKey; name: "pass"; value: "shadowOrtho" } ]
            renderStates: [
                DepthTest {
                    depthFunction: DepthTest.LessOrEqual
                }
            ]
            ...
        },
        RenderPass {
            filterKeys: [ FilterKey { id: shadowCubeKey; name: "pass"; value: "shadowCube" } ]
            renderStates: [
                DepthTest {
                    depthFunction: DepthTest.LessOrEqual
                }
            ]
            ...
        },
        RenderPass {
            filterKeys: [ FilterKey { id: opaqueKey; name: "pass"; value: "opaque" } ]
            renderStates: [
                DepthTest {
                    depthFunction: DepthTest.LessOrEqual
                },
                NoDepthMask {
                    enabled: when DisableDepthPrePass is not set
                }
            ]
            ...
        },
        RenderPass {
            filterKeys: [ FilterKey { id: transparentKey; name: "pass"; value: "transparent" } ]
            renderStates: [
                DepthTest {
                    depthFunction: DepthTest.LessOrEqual
                },
                NoDepthMask {
                },
                BlendEquation {
                    blendFunction: BlendEquation.Add
                },
                BlendEquationArguments {
                    sourceRgb: BlendEquationArguments.One
                    destinationRgb: BlendEquationArguments.OneMinusSourceAlpha
                    sourceAlpha: BlendEquationArguments.One
                    destinationAlpha: BlendEquationArguments.OneMinusSourceAlpha
                }
            ]
            ...
        }
    ]

    Compute pass for texture prefiltering is provided as a separate technique with "type" == "bsdfPrefilter". [not implemented]

*/

Q3DSSceneManager::Q3DSSceneManager(ParentChildPairs *pairs)
    : m_gfxLimits(Q3DS::graphicsLimits()),
      m_matGen(new Q3DSDefaultMaterialGenerator),
      m_customMaterialGen(new Q3DSCustomMaterialGenerator),
      m_textMatGen(new Q3DSTextMaterialGenerator),
      m_textRenderer(new Q3DSTextRenderer(this)),
#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
      m_distanceFieldMaterialGenerator(new Q3DSDistanceFieldMaterialGenerator),
      m_fontDatabase(new Q3DSFontDatabase),
      m_glyphCacheManager(nullptr),
#endif
      m_profiler(new Q3DSProfiler),
      m_inputManager(new Q3DSInputManager(this)),
      m_pairs(pairs)
{
    if (Q3DSSlideUtils::useDragonWings())
        m_slidePlayer = new Q3DSSlidePlayerNg(this);
    else
        m_slidePlayer = new Q3DSSlidePlayer(this);
    const QString fontDir = Q3DSUtils::resourcePrefix() + QLatin1String("res/Font");
    m_textRenderer->registerFonts({ fontDir });

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    m_fontDatabase->registerFonts({ fontDir });
#endif

    qRegisterMetaType<Qt3DRender::QRenderTarget *>("Qt3DRender::QRenderTarget*");
}

Q3DSSceneManager::~Q3DSSceneManager()
{
    m_logMutex.lock();
    m_inDestructor = true;
    m_logMutex.unlock();

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    const QString fontDir = Q3DSUtils::resourcePrefix() + QLatin1String("res/Font");
    m_fontDatabase->unregisterFonts({ fontDir });
#endif

#if QT_CONFIG(q3ds_profileui)
    delete m_consoleCommands;
    delete m_profileUi;
#endif
    delete m_slidePlayer;
    delete m_textRenderer;
    delete m_textMatGen;
#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    delete m_distanceFieldMaterialGenerator;
    delete m_fontDatabase;
#endif
    delete m_customMaterialGen;
    delete m_matGen;
    delete m_frameUpdater;
    delete m_profiler;
    delete m_inputManager;

    if (m_scene && m_sceneChangeObserverIndex >= 0)
        m_scene->removeSceneChangeObserver(m_sceneChangeObserverIndex);
    if (m_masterSlide && m_slideGraphChangeObserverIndex >= 0)
        m_masterSlide->removeSlideGraphChangeObserver(m_slideGraphChangeObserverIndex);
}

void Q3DSSceneManager::updateSizes(const QSize &size, qreal dpr, const QRect &viewport, bool forceSynchronous)
{
    if (!m_scene)
        return;

    // Setup the matte and scene viewport
    QRectF normalizedViewport;
    if (viewport.isNull())
        normalizedViewport = QRectF(0, 0, 1, 1);
    else
        normalizedViewport = QRectF(viewport.x() / qreal(size.width()),
                                    viewport.y() / qreal(size.height()),
                                    viewport.width() / qreal(size.width()),
                                    viewport.height() / qreal(size.height()));

    if (m_viewportData.viewport)
       m_viewportData.viewport->setNormalizedRect(normalizedViewport);

    m_viewportData.viewportRect = viewport;
    m_viewportData.viewportDpr = dpr;
    if (m_viewportData.matteScissorTest) {
        m_viewportData.matteScissorTest->setBottom(qFloor(-(viewport.height() + viewport.y() - size.height()) * dpr));
        m_viewportData.matteScissorTest->setLeft(qFloor(viewport.x() * dpr));
        m_viewportData.matteScissorTest->setWidth(qFloor(viewport.width() * dpr));
        m_viewportData.matteScissorTest->setHeight(qFloor(viewport.height() * dpr));
    }

    qCDebug(lcScene) << "Resize to" << size << "with viewport" << viewport << "device pixel ratio" << dpr;

    m_outputPixelSize = (viewport.isNull() ? size : viewport.size()) * dpr;

    // m_guiData uses the full surface size (not viewport)
    m_guiData.outputSize = size;
    m_guiData.outputDpr = dpr;

    if (m_guiData.camera) {
        m_guiData.camera->setRight(size.width() * float(dpr));
        m_guiData.camera->setBottom(size.height() * float(dpr));
    }

    for (auto callback : m_compositorOutputSizeChangeCallbacks)
        callback();

    bool forceTreeVisit = forceSynchronous;
    Q3DSUipPresentation::forAllObjects(m_scene, [this, &forceTreeVisit](Q3DSGraphObject *obj) {
        if (obj->type() == Q3DSGraphObject::Layer) {
            Q3DSLayerAttached *data = obj->attached<Q3DSLayerAttached>();
            if (data) {
                data->parentSize = m_outputPixelSize;
                data->frameDirty |= Q3DSGraphObjectAttached::LayerDirty;
                // do it right away if there was no size set yet
                if (data->parentSize.isEmpty())
                    forceTreeVisit = true;
                // Defer otherwise, like it is done for other property changes.
            }
        } else if (obj->type() == Q3DSGraphObject::Text) {
            // Text nodes depend on the device pixel ratio and so
            // may need to be updated.
            Q3DSTextAttached *data = obj->attached<Q3DSTextAttached>();
            if (data) {
                data->frameDirty = Q3DSGraphObjectAttached::TextDirty;
                data->frameChangeFlags |= Q3DSTextNode::TextureImageDepChanges;
            }
        } else if (obj->type() == Q3DSGraphObject::Light) {
            // Force gathering of lights if there is a pending light visibility change
            auto data = obj->attached<Q3DSNodeAttached>();
            if (data && (data->frameChangeFlags & Q3DSNode::EyeballChanges) && data->layer3DS) {
                auto layerData = data->layer3DS->attached<Q3DSLayerAttached>();
                layerData->frameChangeFlags |= Q3DSLayerNode::LayerContentSubTreeLightsChange;
            }
        }
    });
    if (forceTreeVisit)
        syncScene();

    // Setup scene viewport sizes
    updateViewportRects();
}

void Q3DSSceneManager::setCurrentSlide(Q3DSSlide *newSlide, bool sync)
{
    // NOTE: m_currentSlide is update from the slide player...
    if (m_currentSlide == newSlide)
        return;

    const int index = m_slidePlayer->slideDeck()->indexOfSlide(newSlide);
    if (index == -1 && !newSlide->parent()) // silently refuse to change to the master slide
        return;
    Q_ASSERT(index != -1);
    m_slidePlayer->slideDeck()->setCurrentSlide(index);
    if (!Q3DSSlideUtils::useDragonWings() && (sync || m_slidePlayer->state() != Q3DSSlidePlayer::PlayerState::Playing))
        static_cast<Q3DSSlidePlayer *>(m_slidePlayer)->setSlideTime(newSlide, 0.0f);
    if (sync)
        syncScene();
}

void Q3DSSceneManager::setComponentCurrentSlide(Q3DSSlide *newSlide, bool sync)
{
    Q3DSSlideAttached *data = newSlide->attached<Q3DSSlideAttached>();
    const int index = data->slidePlayer->slideDeck()->indexOfSlide(newSlide);
    if (index == -1 && !newSlide->parent()) // silently refuse to change to the master slide
        return;
    Q_ASSERT(index != -1);
    data->slidePlayer->slideDeck()->setCurrentSlide(index);
    if (!Q3DSSlideUtils::useDragonWings() && (sync || data->slidePlayer->state() != Q3DSSlidePlayer::PlayerState::Playing))
        static_cast<Q3DSSlidePlayer *>(data->slidePlayer)->setSlideTime(newSlide, 0.0f);
    if (sync)
        syncScene();
}

void Q3DSSceneManager::setLayerCaching(bool enabled)
{
    if (m_layerCaching == enabled)
        return;

    qCDebug(lcScene, "Layer caching enabled = %d", enabled);
    m_layerCaching = enabled;

    m_layerUncachePending = !m_layerCaching;
}

void Q3DSSceneManager::setLayerComposition(bool enabled)
{
    if (m_compositorEnabled == enabled)
        return;

    qCDebug(lcScene, "Layer composition enabled = %d", enabled);
    m_compositorEnabled = enabled;

    rebuildCompositorLayerChain();
}

void Q3DSSceneManager::uncacheLayers()
{
    m_layerUncachePending = true;
}

void Q3DSSceneManager::prepareAnimators()
{
    if (!m_animatorsInitialized) {
        m_slidePlayer->sceneReady();
        m_animatorsInitialized = true;
    }
}

QDebug operator<<(QDebug dbg, const Q3DSSceneManager::SceneBuilderParams &p)
{
    QDebugStateSaver saver(dbg);
    dbg << "SceneBuilderParams(" << p.flags << p.outputSize << p.outputDpr << p.surface << ")";
    return dbg;
}

void Q3DSSceneManager::prepareEngineReset()
{
    qCDebug(lcScene, "prepareEngineReset on scenemanager %p", this);

    delete m_frameUpdater;
    m_frameUpdater = nullptr;

    delete m_slidePlayer;
    m_slidePlayer = nullptr;

    m_animatorsInitialized = false;

#if QT_CONFIG(q3ds_profileui)
    if (m_profileUi)
        m_profileUi->releaseResources();
#endif
}

void Q3DSSceneManager::prepareEngineResetGlobal()
{
    qCDebug(lcScene, "prepareEngineResetGlobal");

    Q3DSImageManager::instance().invalidate();
    Q3DSShaderManager::instance().invalidate();
}

/*
    Builds and "runs" a Qt 3D scene. To be called once per SceneManager instance.

    Ownership of the generated Qt 3D objects is managed primarily via parenting
    to somewhere under the returned rootEntity. SceneManager and the Attached
    objects in the 3DS scenegraph have thus no real ownership of the Qt 3D
    scene but they keep plenty of references to the Qt 3D objects. Scenes (as
    in Qt 3D (sub)scenes built from 3DS presentations) cannot be destroyed
    individually: it is only the entire Qt 3D "scene" (i.e. aspect engine) that
    can go away, including the (sub)scenes for all 3DS presentations, e.g. upon
    (re)opening the same or another uip/uia in a viewer. This gives a certain
    degree of freedom when parenting Qt 3D objects since reuse in another
    presentation's corresponding subtree (e.g. typical for cached shader
    programs) is allowed without any special considerations.

    When params.window is null, params.frameGraphRoot must be valid (e.g. a
    RenderTargetSelector). Here out.frameGraphRoot is the same as
    params.frameGraphRoot, and it is up to the caller to ensure out.rootEntity
    gets parented somewhere (typically to out.rootEntity from a previous buildScene call).
  */
Q3DSSceneManager::Scene Q3DSSceneManager::buildScene(Q3DSUipPresentation *presentation, const SceneBuilderParams &params)
{
    if (!presentation->scene()) {
        qWarning("Q3DSSceneBuilder: No scene?");
        return Scene();
    }

    qCDebug(lcScene) << "Building scene for" << presentation->sourceFile() << params; // NB params.outputSize==(0,0) is acceptable

    const QString fontDir = QLatin1String("/fonts");
    const QString projectFontDir = QFileInfo(presentation->sourceFile()).canonicalPath() + fontDir;

    if (QDir(projectFontDir).exists()) {
        m_textRenderer->registerFonts({ projectFontDir });
#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
        m_fontDatabase->registerFonts({ projectFontDir });
#endif
    } else {
        // We need the path to uia file for fonts dir. As that is not readily available here, go up
        // the directory hoping to find the folder. We're using 3 levels for now, as that is what
        // Editor is using as well.
        int loops = 0;
        QString searchPath = QFileInfo(presentation->sourceFile()).canonicalPath();
        do {
            searchPath.append(QLatin1String("/.."));
        } while (!QFileInfo(searchPath + fontDir).exists() && ++loops < 3);
        if (QDir(searchPath + fontDir).exists()) {
            m_textRenderer->registerFonts({ searchPath + fontDir });
#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
            m_fontDatabase->registerFonts({ searchPath + fontDir  });
#endif
        }
    }

    m_engine = params.engine;
    m_flags = params.flags;

    m_presentation = presentation;
    m_presentationSize = QSize(m_presentation->presentationWidth(), m_presentation->presentationHeight());
    m_scene = m_presentation->scene();
    m_masterSlide = m_presentation->masterSlide();
    m_currentSlide = nullptr;
    m_pendingObjectVisibility.clear();
    m_pendingSubPresLayers.clear();
    m_pendingSubPresImages.clear();
    m_subPresentations.clear();
    m_profiler->resetForNewScene(this);

    m_profiler->setEnabled(m_flags.testFlag(EnableProfiling));

    // All shader program info goes to the main presentation's profiler,
    // including programs from subpresentations.
    if (!m_flags.testFlag(SubPresentation))
        Q3DSShaderManager::instance().setProfiler(m_profiler);

    if (!m_scene) {
        qWarning("Q3DSSceneManager: No scene?");
        return Scene();
    }
    if (!m_masterSlide) {
        qWarning("Q3DSSceneManager: No master slide?");
        return Scene();
    }
    if (!m_masterSlide->firstChild()) {
        qWarning("Q3DSSceneManager: No slides?");
        return Scene();
    }

    if (!m_scene->attached()) {
        m_scene->setAttached(new Q3DSSceneAttached);
        m_scene->attached<Q3DSSceneAttached>()->propertyChangeObserverIndex
            = m_scene->addPropertyChangeObserver(std::bind(&Q3DSSceneManager::handlePropertyChange,
                       this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    }

    // Kick off the Qt3D scene.
    m_rootEntity = new Qt3DCore::QEntity;
    m_rootEntity->setObjectName(QString(QLatin1String("non-layer root for presentation %1")).arg(m_presentation->name()));
    m_profiler->reportQt3DSceneGraphRoot(m_rootEntity);

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    m_glyphCacheManager = new Q3DSDistanceFieldGlyphCacheManager(m_rootEntity);
#endif

    static const auto createSlideAttached = [](Q3DSSlide *slide, Qt3DCore::QEntity *entity) {
        if (!slide->attached()) {
            Q3DSSlideAttached *data = new Q3DSSlideAttached;
            data->entity = entity;
            slide->setAttached(data);
        }
    };

    // Create the attached data object(s) and register for change notifications
    createSlideAttached(m_masterSlide, m_rootEntity);
    m_masterSlide->attached<Q3DSSlideAttached>()->slideObjectChangeObserverIndex = m_masterSlide->addSlideObjectChangeObserver(
                std::bind(&Q3DSSceneManager::handleSlideObjectChange, this, std::placeholders::_1, std::placeholders::_2));
    Q3DSSlide *subslide = static_cast<Q3DSSlide *>(m_masterSlide->firstChild());
    while (subslide) {
        createSlideAttached(subslide, m_rootEntity);
        subslide->attached<Q3DSSlideAttached>()->slideObjectChangeObserverIndex = subslide->addSlideObjectChangeObserver(
                    std::bind(&Q3DSSceneManager::handleSlideObjectChange, this, std::placeholders::_1, std::placeholders::_2));
        subslide = static_cast<Q3DSSlide *>(subslide->nextSibling());
    }

    Q3DSSlideDeck *slideDeck = new Q3DSSlideDeck(m_masterSlide);
    m_currentSlide = slideDeck->currentSlide();

    // Property change processing happens in a frame action
    Qt3DLogic::QFrameAction *nodeUpdater = new Qt3DLogic::QFrameAction;
    m_frameUpdater = new Q3DSFrameUpdater(this);
    QObject::connect(nodeUpdater, &Qt3DLogic::QFrameAction::triggered, m_frameUpdater, &Q3DSFrameUpdater::frameAction);
    if (m_pairs) {
        m_pairs->addPair(m_rootEntity, nodeUpdater);
        m_pairs->addPair(m_rootEntity, m_frameUpdater);
    }
    m_rootEntity->addComponent(nodeUpdater);

    Qt3DRender::QRenderSettings *frameGraphComponent;
    Qt3DRender::QFrameGraphNode *frameGraphRoot;
    Qt3DRender::QFrameGraphNode *subPresFrameGraphRoot;
    if (params.surface) {
        Q_ASSERT(!m_flags.testFlag(SubPresentation));
        frameGraphComponent = new Qt3DRender::QRenderSettings(m_rootEntity);
        frameGraphRoot = new Qt3DRender::QRenderSurfaceSelector;
        m_profiler->reportFrameGraphRoot(frameGraphRoot);
        // a node under which subpresentation framegraphs can be added
        subPresFrameGraphRoot = new Qt3DRender::QFrameGraphNode(frameGraphRoot);
        m_profiler->reportFrameGraphStopNode(subPresFrameGraphRoot);
        // but do nothing there when there are no subpresentations
        new Qt3DRender::QNoDraw(subPresFrameGraphRoot);
    } else {
        Q_ASSERT(m_flags.testFlag(SubPresentation));
        frameGraphComponent = nullptr;
        frameGraphRoot = params.frameGraphRoot;
        m_profiler->reportFrameGraphRoot(frameGraphRoot);
        subPresFrameGraphRoot = nullptr;
        Q_ASSERT(frameGraphRoot);
    }
    if (params.viewport.isNull())
        m_outputPixelSize = params.outputSize * params.outputDpr;
    else
        m_outputPixelSize = params.viewport.size() * params.outputDpr;
    m_guiData.outputSize = params.outputSize;
    m_guiData.outputDpr = params.outputDpr;

    // Parent it to something long-living (note: cannot be the framegraph).
    // Cannot leave globally used components unparented since that would mean
    // they get parented to the first node they get added to - and that might
    // be something that gets destroyed over time, e.g. in a framegraph subtree
    // that gets removed or replaced at some point.
    m_fsQuadTag = new Qt3DRender::QLayer(m_rootEntity);
    m_fsQuadTag->setObjectName(QLatin1String("Fullscreen quad pass"));

    // Do some pre-processing and early setup for some objects.
    initSubTree(m_scene);

    m_engine->loadSlideResources(m_masterSlide, m_presentation);
    m_engine->loadSlideResources(m_currentSlide, m_presentation);

    // Build the (offscreen) Qt3D scene
    m_layerContainerFg = new Qt3DRender::QFrameGraphNode(frameGraphRoot);
    new Qt3DRender::QNoDraw(m_layerContainerFg); // in case there are no layers at all

    Q3DSUipPresentation::forAllLayers(m_scene, [=](Q3DSLayerNode *layer3DS) {
        if (layer3DS->sourcePath().isEmpty())
            buildLayer(layer3DS, m_layerContainerFg, m_outputPixelSize);
        else
            buildSubPresentationLayer(layer3DS, m_outputPixelSize);

    });

    // The Scene object may have non-layer children.
    Q3DSGraphObject *sceneChild = m_scene->firstChild();
    while (sceneChild) {
        if (sceneChild->type() == Q3DSGraphObject::Behavior)
            initBehaviorInstance(static_cast<Q3DSBehaviorInstance *>(sceneChild));
        sceneChild = sceneChild->nextSibling();
    }

    // Onscreen (or not) compositor (still offscreen when this is a subpresentation)
    buildCompositor(frameGraphRoot, m_rootEntity);
    // Profiling UI (main presentation only)
#if QT_CONFIG(q3ds_profileui)
    if (!m_flags.testFlag(SubPresentation)) {
        buildGuiPass(frameGraphRoot, m_rootEntity);
        m_consoleCommands = new Q3DSConsoleCommands(this);
        m_guiData.imguiQuickItem = Q3DSEngine::qmlProfileUiInstance();
        m_profileUi = new Q3DSProfileUi(&m_guiData, m_profiler,
                                        std::bind(&Q3DSConsoleCommands::setupConsole, m_consoleCommands, std::placeholders::_1));
    }
#endif

    // Fullscreen quad for bluring the shadow map/cubemap
    Q3DSShaderManager &sm(Q3DSShaderManager::instance());
    QStringList fsQuadPassNames { QLatin1String("shadowOrthoBlurX"), QLatin1String("shadowOrthoBlurY") };
    QVector<Qt3DRender::QShaderProgram *> fsQuadPassProgs { sm.getOrthoShadowBlurXShader(m_rootEntity), sm.getOrthoShadowBlurYShader(m_rootEntity) };

    if (!m_gfxLimits.useGles2Path) {
        if (m_gfxLimits.maxDrawBuffers >= 6) { // ###
            fsQuadPassNames << QLatin1String("shadowCubeBlurX") << QLatin1String("shadowCubeBlurY");
            fsQuadPassProgs << sm.getCubeShadowBlurXShader(m_rootEntity, m_gfxLimits) << sm.getCubeShadowBlurYShader(m_rootEntity, m_gfxLimits);
        }
        fsQuadPassNames << QLatin1String("ssao") << QLatin1String("progaa");
        fsQuadPassProgs << sm.getSsaoTextureShader(m_rootEntity) << sm.getProgAABlendShader(m_rootEntity);
    }
    FsQuadParams quadInfo;
    quadInfo.parentEntity = m_rootEntity;
    quadInfo.passNames = fsQuadPassNames;
    quadInfo.passProgs = fsQuadPassProgs;
    quadInfo.tag = m_fsQuadTag;
    buildFsQuad(quadInfo);

    Scene sc;
    sc.rootEntity = m_rootEntity;
    sc.frameGraphRoot = frameGraphRoot;
    sc.subPresFrameGraphRoot = subPresFrameGraphRoot;
    sc.frameAction = nodeUpdater;

    if (params.surface) {
        // Ready to go (except that the sizes calculated from params.outputSize are
        // likely bogus when it is derived from QWindow::size() during app startup;
        // will get updated in updateSizes()).
        static_cast<Qt3DRender::QRenderSurfaceSelector *>(frameGraphRoot)->setSurface(params.surface);
        frameGraphComponent->setActiveFrameGraph(frameGraphRoot);
        m_rootEntity->addComponent(frameGraphComponent);
        sc.renderSettings = frameGraphComponent;
    }

    // We now set of slide handling, updating object visibility etc.
    qCDebug(lcScene, "Kicking off slide system");
    m_slidePlayer->setSlideDeck(slideDeck);

    // Force processing the initial set of object visibility changes generated
    // by the slideplayer as we need this now, do not wait until the first frame action.
    setPendingVisibilities();

    // Listen to future changes to the scene graph.
    m_sceneChangeObserverIndex = m_scene->addSceneChangeObserver(
                std::bind(&Q3DSSceneManager::handleSceneChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

    // And the "slide graph" (more like slide list).
    m_slideGraphChangeObserverIndex = m_masterSlide->addSlideGraphChangeObserver(
                std::bind(&Q3DSSceneManager::handleSlideGraphChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

    // And for events too.
    m_scene->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    // measure the time from the end of scene building to the invocation of the first frame action
    m_frameUpdater->startTimeFirstFrame();

    qCDebug(lcScene, "buildScene done");

    return sc;
}

/*
    To be called by the Q3DSEngine once after all subpresentation buildScene()
    calls have succeeded. This is where the association of textures and
    subpresentation layers happens (or later if loading is deferred). This
    cannot be done in the first buildScene since the textures for
    subpresentations (and the corresponding framegraph subtrees) are not yet
    generated at that stage.
 */
void Q3DSSceneManager::setSubPresentations(const QVector<Q3DSSubPresentation> &subPresentations)
{
    m_inSetSubPresentations = true;
    m_subPresentations = subPresentations;
    updateSubPresentationHosts();
    m_inSetSubPresentations = false;
}

void Q3DSSceneManager::finalizeMainScene()
{
    Q_ASSERT(!m_flags.testFlag(SubPresentation));
    qCDebug(lcScene, "finalizeMainScene");

    for (const Q3DSSubPresentation &subPres : m_subPresentations) {
        if (subPres.sceneManager)
            m_profiler->registerSubPresentationProfiler(subPres.sceneManager->m_profiler);
    }

#if QT_CONFIG(q3ds_profileui)
    if (!m_flags.testFlag(SubPresentation))
        m_consoleCommands->runBootScript();
#endif
}

void Q3DSSceneManager::finalizeSubpresentationLoading(Q3DSSubPresentation *sp)
{
    if (sp->colorTex && sp->sceneManager) {
        for (int i = 0; i < m_subPresentations.size(); ++i) {
            if (m_subPresentations[i].id == sp->id) {
                m_subPresentations[i] = *sp;
                break;
            }
        }
        sp->sceneManager->setSubPresentations(m_subPresentations);
        if (!m_inSetSubPresentations) {
            m_profiler->registerSubPresentationProfiler(sp->sceneManager->m_profiler);
            Q3DSUipPresentation::forAllObjectsOfType(sp->sceneManager->m_presentation->scene(),
                                                     Q3DSGraphObject::Behavior,
                                                     [this, &sp](Q3DSGraphObject *obj)
            {
                Q3DSBehaviorInstance *behaviorInstance = static_cast<Q3DSBehaviorInstance *>(obj);
                if (behaviorInstance->eyeballEnabled())
                    m_engine->loadBehaviorInstance(behaviorInstance, sp->sceneManager->m_presentation);
            });
        }
    }
}

static bool isAsyncSubpresentationLoadingEnabled()
{
    static bool enabled = (qEnvironmentVariableIntValue("Q3DS_ASYNC_LOADING") & 8) > 0;
    return enabled;
}

void Q3DSSceneManager::updateSubPresentationHosts()
{
    for (Q3DSLayerNode *layer3DS : m_pendingSubPresLayers) {
        const QString subPresId = layer3DS->sourcePath();
        Q_ASSERT(!subPresId.isEmpty());
        auto it = std::find_if(m_subPresentations.begin(), m_subPresentations.end(),
                               [subPresId](const Q3DSSubPresentation &sp) { return sp.id == subPresId; });
        if (it != m_subPresentations.end()) {

            auto setSubpresentationTolayer = [this](Q3DSLayerNode *layer, Q3DSSubPresentation *sp){
                qCDebug(lcScene, "Directing subpresentation %s to layer %s", qPrintable(sp->id), layer->id().constData());
                Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer->attached());
                layerData->eyeMono->layerTexture = sp->colorTex;
                layerData->eyeMono->compositorSourceParam->setValue(QVariant::fromValue(layerData->eyeMono->layerTexture));
                layerData->eyeLeft->layerTexture = sp->colorTex;
                layerData->eyeRight->layerTexture = sp->colorTex;
                layerData->eyeLeft->compositorSourceParam->setValue(QVariant::fromValue(layerData->eyeLeft->layerTexture));
                layerData->eyeRight->compositorSourceParam->setValue(QVariant::fromValue(layerData->eyeRight->layerTexture));
                layerData->updateSubPresentationSize();
            };

            if (!it->colorTex) {
                if (isAsyncSubpresentationLoadingEnabled()) {
                    m_engine->loadSubUipPresentation(subPresId, [this, setSubpresentationTolayer](
                                                    Q3DSSubPresentation *sp, Q3DSLayerNode *layer) {
                        finalizeSubpresentationLoading(sp);
                        setSubpresentationTolayer(layer, sp);
                    }, layer3DS);
                } else {
                    *it = m_engine->loadSubUipPresentation(subPresId);
                    finalizeSubpresentationLoading(it);
                    setSubpresentationTolayer(layer3DS, it);
                }
            } else {
                setSubpresentationTolayer(layer3DS, it);
            }
        } else {
            qCDebug(lcScene, "Subpresentation %s for layer %s not found",
                    qPrintable(subPresId), layer3DS->id().constData());
        }
    }
    for (auto p : m_pendingSubPresImages)
        setImageTextureFromSubPresentation(p.first, p.second);

    m_pendingSubPresLayers.clear();
    m_pendingSubPresImages.clear();
}

static Qt3DRender::QSortPolicy *opaquePassSortPolicy(Qt3DCore::QNode *parent = nullptr)
{
    Qt3DRender::QSortPolicy *sortPolicy = new Qt3DRender::QSortPolicy(parent);
    sortPolicy->setSortTypes(QVector<Qt3DRender::QSortPolicy::SortType>() << Qt3DRender::QSortPolicy::FrontToBack);
    return sortPolicy;
}

static Qt3DRender::QSortPolicy *transparentPassSortPolicy(Qt3DCore::QNode *parent = nullptr)
{
    Qt3DRender::QSortPolicy *sortPolicy = new Qt3DRender::QSortPolicy(parent);
    sortPolicy->setSortTypes(QVector<Qt3DRender::QSortPolicy::SortType>() << Qt3DRender::QSortPolicy::BackToFront);
    return sortPolicy;
}

static Qt3DRender::QAbstractTexture *newColorBuffer(const QSize &layerPixelSize, int msaaSampleCount)
{
    Qt3DRender::QAbstractTexture *colorTex;
    if (msaaSampleCount > 1) {
        colorTex = new Qt3DRender::QTexture2DMultisample;
        colorTex->setSamples(msaaSampleCount);
    } else {
        colorTex = new Qt3DRender::QTexture2D;
    }
    colorTex->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
    colorTex->setWidth(layerPixelSize.width());
    colorTex->setHeight(layerPixelSize.height());
    colorTex->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
    colorTex->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
    return colorTex;
}

static Qt3DRender::QAbstractTexture *newDepthStencilBuffer(const QSize &layerPixelSize, int msaaSampleCount, Qt3DRender::QAbstractTexture::TextureFormat format)
{
    // GLES <= 3.1 does not have glFramebufferTexture and support for combined
    // depth-stencil textures. Here we rely on the fact the Qt3D will
    // transparently switch to using a renderbuffer in place of a texture. Using
    // separate textures is problematic for stencil since the suitable texture
    // type is an ES 3.1 extension, so that is not an option either for <= 3.1.
    //
    // The internal difference (renderbuffer vs. texture) won't matter as long
    // as a custom material or other thing does not need the depth texture.
    // When that happens, we will be in trouble when running on GLES < 3.2.
    //
    // Therefore, on GLES 2.0, 3.0 and 3.1 we expect to get called with D16 (or
    // D24 or D32) and no stencil. (whereas GLES 3.2 or desktop GL will use D24S8)

    Qt3DRender::QAbstractTexture *dsTexOrRb;
    if (msaaSampleCount > 1) {
        dsTexOrRb = new Qt3DRender::QTexture2DMultisample;
        dsTexOrRb->setSamples(msaaSampleCount);
    } else {
        dsTexOrRb = new Qt3DRender::QTexture2D;
    }
    dsTexOrRb->setFormat(format);
    dsTexOrRb->setWidth(layerPixelSize.width());
    dsTexOrRb->setHeight(layerPixelSize.height());
    dsTexOrRb->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
    dsTexOrRb->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
    return dsTexOrRb;
}

Qt3DRender::QRenderTarget *Q3DSSceneManager::newLayerRenderTarget(const QSize &layerPixelSize, int msaaSampleCount,
                                                                  Qt3DRender::QAbstractTexture **colorTex, Qt3DRender::QAbstractTexture **dsTexOrRb,
                                                                  Qt3DCore::QNode *textureParentNode, Q3DSLayerNode *layer3DS,
                                                                  Qt3DRender::QAbstractTexture *existingDS)
{
    Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;

    Qt3DRender::QRenderTargetOutput *color = new Qt3DRender::QRenderTargetOutput;
    color->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
    *colorTex = newColorBuffer(layerPixelSize, msaaSampleCount);
    m_profiler->trackNewObject(*colorTex, Q3DSProfiler::Texture2DObject,
                               "Color buffer for layer %s", layer3DS->id().constData());
    (*colorTex)->setParent(textureParentNode);
    color->setTexture(*colorTex);
    rt->addOutput(color);

    Qt3DRender::QRenderTargetOutput *ds = new Qt3DRender::QRenderTargetOutput;
    bool noStencil = !m_gfxLimits.packedDepthStencilBufferSupported; // GLES 2.0
    // see newDepthStencilBuffer for a detailed description of this mess
    noStencil |= m_gfxLimits.format.renderableType() == QSurfaceFormat::OpenGLES
            && Q3DS::graphicsLimits().format.version() <= qMakePair(3, 1);
    Qt3DRender::QAbstractTexture::TextureFormat textureFormat =
            noStencil ? Qt3DRender::QAbstractTexture::D16 : Qt3DRender::QAbstractTexture::D24S8;
    ds->setAttachmentPoint(noStencil ? Qt3DRender::QRenderTargetOutput::Depth
                                     : Qt3DRender::QRenderTargetOutput::DepthStencil);
    if (!existingDS) {
        if (noStencil)
            qCDebug(lcScene, "Render target depth-stencil attachment uses D16 (no stencil)");
        else
            qCDebug(lcScene, "Render target depth-stencil attachment uses D24S8");
        *dsTexOrRb = newDepthStencilBuffer(layerPixelSize, msaaSampleCount, textureFormat);
        m_profiler->trackNewObject(*dsTexOrRb, Q3DSProfiler::Texture2DObject,
                                   "Depth-stencil buffer for layer %s", layer3DS->id().constData());
        (*dsTexOrRb)->setParent(textureParentNode);
    } else {
        *dsTexOrRb = existingDS;
    }

    ds->setTexture(*dsTexOrRb);

    rt->addOutput(ds);

    return rt;
}

static QSize safeLayerPixelSize(const QSize &layerSize, int scaleFactor)
{
    const QSize layerPixelSize = layerSize * scaleFactor;
    return QSize(layerPixelSize.width() > 0 ? layerPixelSize.width() : 32,
                 layerPixelSize.height() > 0 ? layerPixelSize.height() : 32);
}

static QSize safeLayerPixelSize(Q3DSLayerAttached *data)
{
    return safeLayerPixelSize(data->layerSize, data->ssaaScaleFactor);
}

void Q3DSSceneManager::initSubTree(Q3DSGraphObject *subTreeRoot)
{
    Q3DSUipPresentation::forAllObjectsInSubTree(subTreeRoot, [this](Q3DSGraphObject *obj) {
        // First make sure all properties are resolved; f.ex. a model with
        // sourcepath changed before attaching the node to a scene will not
        // generate a MeshChanges prop.change, and so the actual mesh will not
        // be up-to-date without a resolve. Avoid this.
        obj->resolveReferences(*m_presentation);

        // Now create attached objects and set up callbacks for objects that do
        // not need more initialization than that.
        switch (obj->type()) {
        case Q3DSGraphObject::Image:
            initImage(static_cast<Q3DSImage *>(obj));
            break;
        case Q3DSGraphObject::Behavior:
            initBehaviorInstance(static_cast<Q3DSBehaviorInstance *>(obj));
            break;
        case Q3DSGraphObject::DefaultMaterial:
            initDefaultMaterial(static_cast<Q3DSDefaultMaterial *>(obj));
            break;
        case Q3DSGraphObject::CustomMaterial:
            initCustomMaterial(static_cast<Q3DSCustomMaterialInstance *>(obj));
            break;
        case Q3DSGraphObject::ReferencedMaterial:
            initReferencedMaterial(static_cast<Q3DSReferencedMaterial *>(obj));
            break;
        default:
            break;
        }
    });
}

void Q3DSSceneManager::updateViewportRects()
{
    if (m_viewports.isEmpty())
        return;

    for (ViewportSet viewports : m_viewports) {
        // Note: updateCamerasStatus() gets called when switching between mono <-> stereo
        // and it handles properly hiding views.
        switch (m_engine->viewportSettings()->stereoMode()) {
        case Q3DSViewportSettings::StereoModeMono:
            viewports.viewportMono->setNormalizedRect(QRectF(0, 0, 1, 1));
            break;
        case Q3DSViewportSettings::StereoModeTopBottom:
            viewports.viewportLeft->setNormalizedRect(QRectF(0, 0, 1, 0.5));
            viewports.viewportRight->setNormalizedRect(QRectF(0, 0.5, 1, 0.5));
            break;
        case Q3DSViewportSettings::StereoModeLeftRight:
            viewports.viewportLeft->setNormalizedRect(QRectF(0, 0, 0.5, 1));
            viewports.viewportRight->setNormalizedRect(QRectF(0.5, 0, 0.5, 1));
            break;
        case Q3DSViewportSettings::StereoModeAnaglyphRedCyan:
            Q_FALLTHROUGH();
        case Q3DSViewportSettings::StereoModeAnaglyphGreenMagenta:
            viewports.viewportLeft->setNormalizedRect(QRectF(0, 0, 1, 1));
            viewports.viewportRight->setNormalizedRect(QRectF(0, 0, 1, 1));
            break;
        default:
            Q_UNREACHABLE();
            break;
        }
    }
}

void Q3DSSceneManager::updateStereoRenderTree(Q3DSLayerAttached *layerData)
{
    Q_ASSERT(layerData);

    // Reparent left & right selectors to enable/disable rendering them.
    // Note: eyeMono->rtSelector is required all the time as it's used e.g. for picking & shadows
    if (m_engine->isStereoscopic()) {
        layerData->eyeLeft->rtSelector->setParent(layerData->layerFgRoot);
        layerData->eyeRight->rtSelector->setParent(layerData->layerFgRoot);
    } else {
        layerData->eyeLeft->rtSelector->setParent(layerData->layerFgDummyParent);
        layerData->eyeRight->rtSelector->setParent(layerData->layerFgDummyParent);
    }
}

Q3DSEyeData *Q3DSSceneManager::buildEye(Q3DSLayerNode *layer3DS, Qt3DRender::QViewport *viewport)
{
    Q3DSEyeData *eyeData = new Q3DSEyeData;
    eyeData->cameraSelector = new Qt3DRender::QCameraSelector(viewport);
    Qt3DRender::QTechniqueFilter *mainTechniqueSelector = new Qt3DRender::QTechniqueFilter(eyeData->cameraSelector);
    Qt3DRender::QFilterKey *techniqueFilterKey = new Qt3DRender::QFilterKey;
    techniqueFilterKey->setName(QLatin1String("type"));
    techniqueFilterKey->setValue(QLatin1String("main"));
    mainTechniqueSelector->addMatch(techniqueFilterKey);

    eyeData->opaqueTag = new Qt3DRender::QLayer(m_rootEntity);
    eyeData->opaqueTag->setObjectName(QLatin1String("Opaque pass"));
    eyeData->transparentTag = new Qt3DRender::QLayer(m_rootEntity);
    eyeData->transparentTag->setObjectName(QLatin1String("Transparent pass"));

    // Depth texture pass, optional, with its own rendertarget and clear. Just
    // a placeholder for now since it is disabled by default.
    eyeData->depthRtSelector = new Qt3DRender::QRenderTargetSelector(mainTechniqueSelector);
    // Having a NoDraw leaf is essential while the depth texture is not
    // generated (since we must not make draw calls from this leaf), and will
    // [hopefully] not cause any harm later on, when depthRtSelector gets
    // another child, either.
    new Qt3DRender::QNoDraw(eyeData->depthRtSelector);

    // ditto for SSAO
    eyeData->ssaoRtSelector = new Qt3DRender::QRenderTargetSelector(mainTechniqueSelector);
    new Qt3DRender::QNoDraw(eyeData->ssaoRtSelector);

    // ditto for shadow maps but here there will be multiple rendertargetselectors later, so use a dummy node as root
    eyeData->shadowRoot = new Qt3DRender::QFrameGraphNode(mainTechniqueSelector);
    new Qt3DRender::QNoDraw(eyeData->shadowRoot);

    // Clear op for depth pre, opaque, transparent passes.
    eyeData->clearBuffers = new Qt3DRender::QClearBuffers(mainTechniqueSelector);
    eyeData->clearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorDepthStencilBuffer);
    new Qt3DRender::QNoDraw(eyeData->clearBuffers);

    // Depth pre-pass, optional
    Qt3DRender::QRenderPassFilter *depthPreFilter = new Qt3DRender::QRenderPassFilter(mainTechniqueSelector);
    Qt3DRender::QFilterKey *depthFilterKey = new Qt3DRender::QFilterKey;
    depthFilterKey->setName(QLatin1String("pass"));
    depthFilterKey->setValue(QLatin1String("depth"));
    depthPreFilter->addMatch(depthFilterKey);
    Qt3DRender::QSortPolicy *depthPreSortPolicy = opaquePassSortPolicy(depthPreFilter);
    Qt3DRender::QLayerFilter *depthPreLayerFilter = new Qt3DRender::QLayerFilter(depthPreSortPolicy);
    const bool depthPrePassEnabled = !layer3DS->layerFlags().testFlag(Q3DSLayerNode::DisableDepthPrePass)
            && !layer3DS->layerFlags().testFlag(Q3DSLayerNode::DisableDepthTest);
    if (depthPrePassEnabled)
        depthPreLayerFilter->addLayer(eyeData->opaqueTag); // opaque only, transparent objects must not be present

    const bool transparentPassOnly = layer3DS->layerFlags().testFlag(Q3DSLayerNode::DisableDepthTest);

    // Opaque pass
    if (!transparentPassOnly) {
        Qt3DRender::QRenderPassFilter *opaqueFilter = new Qt3DRender::QRenderPassFilter(mainTechniqueSelector);
        Qt3DRender::QFilterKey *opaqueFilterKey = new Qt3DRender::QFilterKey;
        opaqueFilterKey->setName(QLatin1String("pass"));
        opaqueFilterKey->setValue(QLatin1String("opaque"));
        opaqueFilter->addMatch(opaqueFilterKey);
        Qt3DRender::QSortPolicy *opaqueSortPolicy = opaquePassSortPolicy(opaqueFilter);
        Qt3DRender::QLayerFilter *opaqueLayerFilter = new Qt3DRender::QLayerFilter(opaqueSortPolicy);
        opaqueLayerFilter->addLayer(eyeData->opaqueTag);
    }

    // Transparent pass, sort back to front
    Qt3DRender::QRenderPassFilter *transFilter = new Qt3DRender::QRenderPassFilter(mainTechniqueSelector);
    Qt3DRender::QFilterKey *transFilterKey = new Qt3DRender::QFilterKey;
    transFilterKey->setName(QLatin1String("pass"));
    transFilterKey->setValue(QLatin1String("transparent"));
    transFilter->addMatch(transFilterKey);
    Qt3DRender::QSortPolicy *transSortPolicy = transparentPassSortPolicy(transFilter);
    Qt3DRender::QLayerFilter *transLayerFilter = new Qt3DRender::QLayerFilter(transSortPolicy);
    transLayerFilter->addLayer(eyeData->transparentTag);
    if (transparentPassOnly)
        transLayerFilter->addLayer(eyeData->opaqueTag);

    // Post-processing effect passes
    eyeData->effectRoot = new Qt3DRender::QFrameGraphNode(mainTechniqueSelector);
    new Qt3DRender::QNoDraw(eyeData->effectRoot);

    return eyeData;
}

void Q3DSSceneManager::buildLayer(Q3DSLayerNode *layer3DS,
                                  Qt3DRender::QFrameGraphNode *parent,
                                  const QSize &parentSize)
{
    Qt3DRender::QFrameGraphNode *layerFgRoot = new Qt3DRender::QFrameGraphNode(parent);

    // main passes, generating the layer texture
    Qt3DRender::QRenderTargetSelector *rtSelector =
            new Qt3DRender::QRenderTargetSelector(layerFgRoot);
    Qt3DRender::QRenderTargetSelector *rtSelectorLeft =
            new Qt3DRender::QRenderTargetSelector(layerFgRoot);
    Qt3DRender::QRenderTargetSelector *rtSelectorRight =
            new Qt3DRender::QRenderTargetSelector(layerFgRoot);

    int ssaaScaleFactor = 1;
    if (layer3DS->multisampleAA() == Q3DSLayerNode::SSAA) {
        ssaaScaleFactor = 2;
        qCDebug(lcPerf, "Layer %s uses %dx SSAA", layer3DS->id().constData(), ssaaScaleFactor);
    }

    int msaaSampleCount = 0;
    switch (layer3DS->multisampleAA()) {
    case Q3DSLayerNode::MSAA2x:
        msaaSampleCount = 2;
        break;
    case Q3DSLayerNode::MSAA4x:
        msaaSampleCount = 4;
        break;
    default:
        break;
    }
    if (m_flags.testFlag(Force4xMSAA))
        msaaSampleCount = 4;

    // Layer MSAA is only available through multisample textures (GLES 3.1+ or GL 3.2+) at the moment. (QTBUG-63382)
    // Revert to no-MSAA when this is not supported.
    if (msaaSampleCount > 1 && !m_gfxLimits.multisampleTextureSupported) {
        qCDebug(lcScene, "Layer MSAA requested but not supported; ignoring request");
        msaaSampleCount = 0;
    }

    if (msaaSampleCount > 1)
        qCDebug(lcPerf, "Layer %s uses multisample texture", layer3DS->id().constData());

    // parentSize could well be (0, 0) at this stage still, nevermind that
    const QSize layerSize = calculateLayerSize(layer3DS, parentSize);
    const QSize layerPixelSize = safeLayerPixelSize(layerSize, ssaaScaleFactor);
    const QSize dummyLayerSize = QSize(1,1);

    Q3DSLayerAttached *layerData = new Q3DSLayerAttached;
    ViewportSet viewports;

    // Create color and depth-stencil buffers for this layer
    // Normal mono viewport
    Qt3DRender::QAbstractTexture *colorTex;
    Qt3DRender::QAbstractTexture *dsTexOrRb;
    Qt3DRender::QRenderTarget *rt = newLayerRenderTarget(layerPixelSize, msaaSampleCount, &colorTex, &dsTexOrRb, layerFgRoot, layer3DS);
    m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject,
                               "RT for layer %s", layer3DS->id().constData());
    rtSelector->setTarget(rt);

    viewports.viewportMono = new Qt3DRender::QViewport(rtSelector);
    layerData->eyeMono = buildEye(layer3DS, viewports.viewportMono);

    // Create color and depth-stencil buffers for this layer
    // Stereoscopic left-eye
    Q3DSLayerAttached::SizeManagedTexture colorTexLeft;
    Q3DSLayerAttached::SizeManagedTexture dsTexOrRbLeft;
    // Mark textures being for stereoscopic usage
    colorTexLeft.flags |= Q3DSLayerAttached::SizeManagedTexture::StereoscopicView;
    dsTexOrRbLeft.flags |= Q3DSLayerAttached::SizeManagedTexture::StereoscopicView;
    Qt3DRender::QRenderTarget *rtLeft = newLayerRenderTarget(dummyLayerSize, msaaSampleCount, &colorTexLeft.texture, &dsTexOrRbLeft.texture, layerFgRoot, layer3DS);
    m_profiler->trackNewObject(rtLeft, Q3DSProfiler::RenderTargetObject,
                               "RT for layer %s", layer3DS->id().constData());
    rtSelectorLeft->setTarget(rtLeft);

    viewports.viewportLeft = new Qt3DRender::QViewport(rtSelectorLeft);
    layerData->eyeLeft = buildEye(layer3DS, viewports.viewportLeft);

    // Create color and depth-stencil buffers for this layer
    // Stereoscopic right-eye
    Q3DSLayerAttached::SizeManagedTexture colorTexRight;
    Q3DSLayerAttached::SizeManagedTexture dsTexOrRbRight;
    // Mark textures being for stereoscopic usage
    colorTexRight.flags |= Q3DSLayerAttached::SizeManagedTexture::StereoscopicView;
    dsTexOrRbRight.flags |= Q3DSLayerAttached::SizeManagedTexture::StereoscopicView;
    Qt3DRender::QRenderTarget *rtRight = newLayerRenderTarget(dummyLayerSize, msaaSampleCount, &colorTexRight.texture, &dsTexOrRbRight.texture, layerFgRoot, layer3DS);
    m_profiler->trackNewObject(rtRight, Q3DSProfiler::RenderTargetObject,
                               "RT for layer %s", layer3DS->id().constData());
    rtSelectorRight->setTarget(rtRight);

    viewports.viewportRight = new Qt3DRender::QViewport(rtSelectorRight);
    layerData->eyeRight = buildEye(layer3DS, viewports.viewportRight);

    // Note: Moved layerSceneRootEntity to be child of layerFgRoot instead of rtSelector
    Qt3DCore::QEntity *layerSceneRootEntity = new Qt3DCore::QEntity(layerFgRoot);
    layerSceneRootEntity->setObjectName(QObject::tr("root for %1").arg(QString::fromUtf8(layer3DS->id())));
    m_profiler->reportQt3DSceneGraphRoot(layerSceneRootEntity);

    // Must set an entity to make Q3DSLayerNode properties animatable.
    // also, this must be the general purpose "root" (### why?)
    layerData->entity = m_rootEntity;
    // The entity tree corresponding to 3DS nodes lives under a separate,
    // per-layer "root" entity, to allow easy cleanup in case the layer goes
    // away later on.
    layerData->layerSceneRootEntity = layerSceneRootEntity;
    layerData->layer3DS = layer3DS;
    layerData->layerFgRoot = layerFgRoot;
    layerData->layerFgRootParent = layerFgRoot->parentNode();
    layerData->layerFgDummyParent = new Qt3DCore::QNode(layerData->entity);
    layerData->eyeMono->rtSelector = rtSelector;
    layerData->eyeMono->layerTexture = colorTex;
    layerData->eyeMono->layerDS = dsTexOrRb;
    layerData->eyeMono->compositorSourceParam = new Qt3DRender::QParameter(QLatin1String("tex"), layerData->eyeMono->layerTexture);
    layerData->layerSize = layerSize;
    layerData->parentSize = parentSize;
    layerData->msaaSampleCount = msaaSampleCount;
    layerData->ssaaScaleFactor = ssaaScaleFactor;
    layerData->cameraPropertiesParam = new Qt3DRender::QParameter(QLatin1String("camera_properties"), QVector2D(10, 5000), m_rootEntity);
    layerData->eyeMono->depthTextureData.rtSelector = layerData->eyeMono->depthRtSelector;
    layerData->ssaoTextureData.rtSelector = layerData->eyeMono->ssaoRtSelector;
    layerData->shadowMapData.shadowRoot = layerData->eyeMono->shadowRoot;
    layerData->eyeMono->effectData.effectRoot = layerData->eyeMono->effectRoot;

    // textures that are resized automatically to match the layer's dimensions
    layerData->sizeManagedTextures << colorTex << dsTexOrRb;

    // Setup for stereo left / eye
    layerData->eyeLeft->layerTexture = colorTexLeft.texture;
    layerData->eyeRight->layerTexture = colorTexRight.texture;
    layerData->eyeLeft->layerDS = dsTexOrRbLeft.texture;
    layerData->eyeRight->layerDS = dsTexOrRbRight.texture;
    layerData->eyeLeft->compositorSourceParam = new Qt3DRender::QParameter(QLatin1String("texLeft"), layerData->eyeLeft->layerTexture);
    layerData->eyeRight->compositorSourceParam = new Qt3DRender::QParameter(QLatin1String("texRight"), layerData->eyeRight->layerTexture);
    layerData->eyeLeft->rtSelector = rtSelectorLeft;
    layerData->eyeRight->rtSelector = rtSelectorRight;
    layerData->eyeLeft->depthTextureData.rtSelector = layerData->eyeLeft->depthRtSelector;
    layerData->eyeRight->depthTextureData.rtSelector = layerData->eyeRight->depthRtSelector;

    layerData->sizeManagedTextures << colorTexLeft << dsTexOrRbLeft;
    layerData->sizeManagedTextures << colorTexRight << dsTexOrRbRight;

    layerData->eyeLeft->effectData.effectRoot = layerData->eyeLeft->effectRoot;
    layerData->eyeRight->effectData.effectRoot = layerData->eyeRight->effectRoot;

    // Enable/disable correct selectors depending on mode
    updateStereoRenderTree(layerData);

    layerData->stereoModeParam
            = new Qt3DRender::QParameter(QLatin1String("stereoMode"),
                                         m_engine->viewportSettings()->stereoMode());
    layerData->wasStereoscopic = m_engine->isStereoscopic();

    // The effective texture for the layer can change over time (for example
    // when a postproc effect or progaa becomes active or inactive). Keep the
    // engine notified about this.
    QObject::connect(layerData->eyeMono->compositorSourceParam, &Qt3DRender::QParameter::valueChanged,
                     [this, layer3DS](const QVariant &value)
    {
        if (value.isValid())
            emit m_engine->layerTextureNodeChanged(layer3DS);
    });

    QObject::connect(layerData->eyeLeft->compositorSourceParam, &Qt3DRender::QParameter::valueChanged,
                     [this, layer3DS](const QVariant &value)
    {
        if (value.isValid())
            emit m_engine->layerTextureNodeChanged(layer3DS);
    });

    QObject::connect(layerData->eyeRight->compositorSourceParam, &Qt3DRender::QParameter::valueChanged,
                     [this, layer3DS](const QVariant &value)
    {
        if (value.isValid())
            emit m_engine->layerTextureNodeChanged(layer3DS);
    });

    QObject::connect(m_engine, &Q3DSEngine::stereoModeChanged,
                     [this, layer3DS, layerData]()
    {
        if (m_engine->isStereoscopic() != layerData->wasStereoscopic) {
            // When switching between stereo <-> non-stereo do extra initialization
            // TODO: Here we disable effects when rendering stereo as msaa+effect currently doesn't work for stereo
            int activeEffectCount = layerData->eyeMono->effectData.activeEffectCount;
            layerData->effectActive = m_engine->isStereoscopic() ? false : activeEffectCount > 0;

            // If any layer uses advanced blending, let them update shaders
            updateAdvancedBlendLayers();

            updateLayerCompositorProgram(layer3DS);
            // And enable/disable related selectors
            updateStereoRenderTree(layerData);

            layerData->wasStereoscopic = m_engine->isStereoscopic();
        }

        // Update mode into shader parameter
        if (m_engine->isStereoscopic())
            layerData->stereoModeParam->setValue(m_engine->viewportSettings()->stereoMode());

    });

    layer3DS->setAttached(layerData);

    m_viewports.append(viewports);

    // Add the scene contents.
    Q3DSGraphObject *obj = layer3DS->firstChild();
    m_componentNodeStack.clear();
    m_componentNodeStack.push(nullptr);
    while (obj) {
        buildLayerScene(obj, layer3DS, layerSceneRootEntity);
        obj = obj->nextSibling();
    }

    // Setup picking for layer
    if (layer3DS->firstChild())
        layerData->createRayCaster();

    // Find the active camera for this layer and set it up (but note that there
    // may be none if this is the initial scene build where the slideplayer has
    // not yet been initialized).
    setActiveLayerCamera(findFirstCamera(layer3DS), layer3DS);

    setLayerProperties(layer3DS);

    layerData->propertyChangeObserverIndex = layer3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    layerData->eventObserverIndex = layer3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    // Phase 2: deferred stuff

    // Gather lights for this layer.
    gatherLights(layer3DS);

    updateShadowMapStatus(layer3DS); // must be done before generating materials below

    // Enable SSAO (and depth texture generation) when needed. Must be done
    // before generating materials below.
    updateSsaoStatus(layer3DS);

    // Generate Qt3D material components.
    Q3DSUipPresentation::forAllModels(layer3DS->firstChild(),
                                      [this](Q3DSModelNode *model3DS) {
                                            buildModelMaterial(model3DS);
                                      },
                                      true); // include hidden ones too

    // Set up effects.
    updateEffectStatus(layer3DS);
}

Qt3DRender::QAbstractTexture *Q3DSSceneManager::dummyTexture(const QByteArray &id)
{
    if (!m_dummyTex) {
        m_dummyTex = new Qt3DRender::QTexture2D(m_rootEntity);
        m_dummyTex->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
        m_dummyTex->setWidth(64);
        m_dummyTex->setHeight(64);
        m_profiler->trackNewObject(m_dummyTex, Q3DSProfiler::Texture2DObject, id, "dummy");
    }
    return m_dummyTex;
}

void Q3DSSceneManager::buildSubPresentationLayer(Q3DSLayerNode *layer3DS, const QSize &parentSize)
{
    Q3DSLayerAttached *data = new Q3DSLayerAttached;
    data->entity = m_rootEntity; // must set an entity to to make Q3DSLayerNode properties animatable, just use the root
    data->layer3DS = layer3DS;
    data->layerSize = calculateLayerSize(layer3DS, parentSize);
    data->parentSize = parentSize;

    // Initialize empty datasets for sub presentations
    data->eyeMono = new Q3DSEyeData;
    data->eyeLeft = new Q3DSEyeData;
    data->eyeRight = new Q3DSEyeData;

    // camera and stuff stays null, no such thing for subpresentation layers

    // leave compositorSourceParam dummy for now, we don't know the actual texture yet
    data->eyeMono->compositorSourceParam = new Qt3DRender::QParameter(QLatin1String("tex"), dummyTexture(layer3DS->id()));
    data->eyeLeft->compositorSourceParam = new Qt3DRender::QParameter(QLatin1String("texLeft"), dummyTexture(layer3DS->id()));
    data->eyeRight->compositorSourceParam = new Qt3DRender::QParameter(QLatin1String("texRight"), dummyTexture(layer3DS->id()));
    m_pendingSubPresLayers.insert(layer3DS);

    // subpresentations associated with layers follow the size of the layer
    data->updateSubPresentationSize = [this, layer3DS, data]() {
        const QSize sz = data->layerSize;
        if (sz.isEmpty())
            return;
        const QSize layerPixelSize = safeLayerPixelSize(data);
        auto it = std::find_if(m_subPresentations.cbegin(), m_subPresentations.cend(),
                               [layer3DS](const Q3DSSubPresentation &sp) { return sp.id == layer3DS->sourcePath(); });
        if (it != m_subPresentations.cend() && it->colorTex) {
            qCDebug(lcScene, "Resizing subpresentation %s for layer %s to %dx%d",
                    qPrintable(layer3DS->sourcePath()), layer3DS->id().constData(), sz.width(), sz.height());
            // Resize the offscreen subpresentation buffers
            it->colorTex->setWidth(layerPixelSize.width());
            it->colorTex->setHeight(layerPixelSize.height());
            if (it->depthOrDepthStencilTex) {
                it->depthOrDepthStencilTex->setWidth(layerPixelSize.width());
                it->depthOrDepthStencilTex->setHeight(layerPixelSize.height());
            }
            if (it->stencilTex) {
                it->stencilTex->setWidth(layerPixelSize.width());
                it->stencilTex->setHeight(layerPixelSize.height());
            }
            // and communicate the new size to the subpresentation's renderer
            // (viewport, camera, etc. need to adapt), just like a window would
            // do to an onscreen presentation's scenemanager upon receiving a
            // resizeEvent().
            if (it->sceneManager)
                it->sceneManager->updateSizes(sz, 1);
        }
    };

    layer3DS->setAttached(data);

    setLayerProperties(layer3DS);

    data->propertyChangeObserverIndex = layer3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = layer3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

static void addDepthTest(Qt3DRender::QRenderPass *pass, Qt3DRender::QDepthTest::DepthFunction depthFunction = Qt3DRender::QDepthTest::LessOrEqual)
{
    Qt3DRender::QDepthTest *depthTest = new Qt3DRender::QDepthTest;
    depthTest->setDepthFunction(depthFunction);
    pass->addRenderState(depthTest);
}

static void addNoColorWrite(Qt3DRender::QRenderPass *pass)
{
    Qt3DRender::QColorMask *noColorWrite = new Qt3DRender::QColorMask;
    noColorWrite->setRedMasked(false);
    noColorWrite->setGreenMasked(false);
    noColorWrite->setBlueMasked(false);
    noColorWrite->setAlphaMasked(false);
    pass->addRenderState(noColorWrite);
}

static void setMaterialBlending(Qt3DRender::QBlendEquation *blendFunc,
                                Qt3DRender::QBlendEquationArguments *blendArgs,
                                Q3DSDefaultMaterial::BlendMode blendMode)
{
    switch (blendMode) {
    case Q3DSDefaultMaterial::Screen:
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::SourceAlpha);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::One);
        break;

    case Q3DSDefaultMaterial::Multiply:
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::DestinationColor);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::Zero);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::One);
        break;

    // ### add extension specific modes

    default: // Normal
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::SourceAlpha);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);
        break;
    }
}

QVector<Qt3DRender::QRenderPass *> Q3DSSceneManager::standardRenderPasses(Qt3DRender::QShaderProgram *program,
                                                                          Q3DSLayerNode *layer3DS,
                                                                          Q3DSDefaultMaterial::BlendMode blendMode,
                                                                          bool hasDisplacement)
{
    Qt3DRender::QFilterKey *shadowOrthoFilterKey = new Qt3DRender::QFilterKey;
    shadowOrthoFilterKey->setName(QLatin1String("pass"));
    shadowOrthoFilterKey->setValue(QLatin1String("shadowOrtho"));
    Qt3DRender::QFilterKey *shadowCubeFilterKey = new Qt3DRender::QFilterKey;
    shadowCubeFilterKey->setName(QLatin1String("pass"));
    shadowCubeFilterKey->setValue(QLatin1String("shadowCube"));
    Qt3DRender::QFilterKey *depthFilterKey = new Qt3DRender::QFilterKey;
    depthFilterKey->setName(QLatin1String("pass"));
    depthFilterKey->setValue(QLatin1String("depth"));
    Qt3DRender::QFilterKey *opaqueFilterKey = new Qt3DRender::QFilterKey;
    opaqueFilterKey->setName(QLatin1String("pass"));
    opaqueFilterKey->setValue(QLatin1String("opaque"));
    Qt3DRender::QFilterKey *transFilterKey = new Qt3DRender::QFilterKey;
    transFilterKey->setName(QLatin1String("pass"));
    transFilterKey->setValue(QLatin1String("transparent"));

    // Shadow map for directional lights.
    Qt3DRender::QRenderPass *shadowOrthoPass = new Qt3DRender::QRenderPass;
    shadowOrthoPass->addFilterKey(shadowOrthoFilterKey);
    addDepthTest(shadowOrthoPass);

    // Shadow map for point and area lights. (omnidirectional shadows -> uses a cubemap texture)
    Qt3DRender::QRenderPass *shadowCubePass = new Qt3DRender::QRenderPass;
    shadowCubePass->addFilterKey(shadowCubeFilterKey);
    addDepthTest(shadowCubePass);

    // Depth pre-pass to help early Z. Also used to generate the optional depth texture.
    Qt3DRender::QRenderPass *depthPass = new Qt3DRender::QRenderPass;
    depthPass->addFilterKey(depthFilterKey);
    addDepthTest(depthPass);
    addNoColorWrite(depthPass);

    // Opaque objects.
    Qt3DRender::QDepthTest::DepthFunction mainPassDepthFunc = !layer3DS->layerFlags().testFlag(Q3DSLayerNode::DisableDepthTest)
            ? Qt3DRender::QDepthTest::LessOrEqual
            : Qt3DRender::QDepthTest::Always;
    Qt3DRender::QRenderPass *opaquePass = new Qt3DRender::QRenderPass;
    opaquePass->addFilterKey(opaqueFilterKey);
    addDepthTest(opaquePass, mainPassDepthFunc);
    // Depth buffer is already filled when depth prepass is enabled.
    Qt3DRender::QNoDepthMask *opaqueNoDepthWrite = new Qt3DRender::QNoDepthMask;
    const bool depthPrePassEnabled = !layer3DS->layerFlags().testFlag(Q3DSLayerNode::DisableDepthPrePass)
            && !layer3DS->layerFlags().testFlag(Q3DSLayerNode::DisableDepthTest);
    opaqueNoDepthWrite->setEnabled(depthPrePassEnabled);
    opaquePass->addRenderState(opaqueNoDepthWrite);

    // Transparent objects.
    Qt3DRender::QRenderPass *transPass = new Qt3DRender::QRenderPass;
    transPass->addFilterKey(transFilterKey);
    addDepthTest(transPass, mainPassDepthFunc);
    Qt3DRender::QNoDepthMask *transNoDepthWrite = new Qt3DRender::QNoDepthMask;
    transPass->addRenderState(transNoDepthWrite);
    // blending. the shaders produce non-premultiplied results.
    auto blendFunc = new Qt3DRender::QBlendEquation;
    auto blendArgs = new Qt3DRender::QBlendEquationArguments;
    setMaterialBlending(blendFunc, blendArgs, blendMode);

    transPass->addRenderState(blendFunc);
    transPass->addRenderState(blendArgs);

    // Make sure the shared shader programs are not parented to the renderpass
    // and thus the material. (the material can be rebuilt later on, cannot let
    // its destroy tear down shared resources)
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(layerData && layerData->entity);

    shadowOrthoPass->setShaderProgram(Q3DSShaderManager::instance().getOrthographicDepthNoTessShader(layerData->entity));
    shadowCubePass->setShaderProgram(Q3DSShaderManager::instance().getCubeDepthNoTessShader(layerData->entity));
    depthPass->setShaderProgram(Q3DSShaderManager::instance().getDepthPrepassShader(layerData->entity, hasDisplacement));
    opaquePass->setShaderProgram(program);
    transPass->setShaderProgram(program);

    return { shadowOrthoPass, shadowCubePass, depthPass, opaquePass, transPass };
}

QVector<Qt3DRender::QTechnique *> Q3DSSceneManager::computeTechniques(Q3DSLayerNode *layer3DS)
{
#if 0
    Qt3DRender::QTechnique *bsdfPrefilter = new Qt3DRender::QTechnique;

    Qt3DRender::QFilterKey *bsdfPrefilterFilterKey = new Qt3DRender::QFilterKey;
    bsdfPrefilterFilterKey->setName(QLatin1String("type"));
    bsdfPrefilterFilterKey->setValue(QLatin1String("bsdfPrefilter"));
    bsdfPrefilter->addFilterKey(bsdfPrefilterFilterKey);

    Q3DSDefaultMaterialGenerator::addDefaultApiFilter(bsdfPrefilter);

    Qt3DRender::QRenderPass *bsdfComputePass = new Qt3DRender::QRenderPass;
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(layerData && layerData->entity);
    bsdfComputePass->setShaderProgram(Q3DSShaderManager::instance().getBsdfMipPreFilterShader(layerData->entity));
    bsdfPrefilter->addRenderPass(bsdfComputePass);

    return { bsdfPrefilter };
#endif
    Q_UNUSED(layer3DS);
    return {};
}

void Q3DSSceneManager::markAsMainTechnique(Qt3DRender::QTechnique *technique)
{
    Qt3DRender::QFilterKey *techniqueFilterKey = new Qt3DRender::QFilterKey;
    techniqueFilterKey->setName(QLatin1String("type"));
    techniqueFilterKey->setValue(QLatin1String("main"));
    technique->addFilterKey(techniqueFilterKey);
}

QSize Q3DSSceneManager::calculateLayerSize(Q3DSLayerNode *layer3DS, const QSize &parentSize)
{
    if (layer3DS->hasExplicitSize())
        return layer3DS->explicitSize();

    int w = 0;
    switch (layer3DS->horizontalFields()) {
    case Q3DSLayerNode::LeftWidth:
        Q_FALLTHROUGH();
    case Q3DSLayerNode::WidthRight:
    {
        int width = qRound(layer3DS->widthUnits() == Q3DSLayerNode::Percent
                           ? layer3DS->width() * 0.01f * parentSize.width()
                           : layer3DS->width());
        w = width;
    }
        break;
    case Q3DSLayerNode::LeftRight:
    {
        float left = layer3DS->leftUnits() == Q3DSLayerNode::Percent
                ? layer3DS->left() * 0.01f * parentSize.width()
                : layer3DS->left();
        float right = layer3DS->rightUnits() == Q3DSLayerNode::Percent
                ? parentSize.width() - (layer3DS->right() * 0.01f * parentSize.width())
                : parentSize.width() - layer3DS->right();
        w = qRound(right - left) + 1;
    }
        break;
    default:
        Q_UNREACHABLE();
        break;
    }

    int h = 0;
    switch (layer3DS->verticalFields()) {
    case Q3DSLayerNode::TopHeight:
        Q_FALLTHROUGH();
    case Q3DSLayerNode::HeightBottom:
    {
        int height = qRound(layer3DS->heightUnits() == Q3DSLayerNode::Percent
                            ? layer3DS->height() * 0.01f * parentSize.height()
                            : layer3DS->height());
        h = height;
    }
        break;
    case Q3DSLayerNode::TopBottom:
    {
        float top = layer3DS->topUnits() == Q3DSLayerNode::Percent
                ? layer3DS->top() * 0.01f * parentSize.height()
                : layer3DS->top();
        float bottom = layer3DS->bottomUnits() == Q3DSLayerNode::Percent
                ? parentSize.height() - (layer3DS->bottom() * 0.01f * parentSize.height())
                : parentSize.height() - layer3DS->bottom();
        h = qRound(bottom - top) + 1;
    }
        break;
    default:
        Q_UNREACHABLE();
        break;
    }

    return QSize(qMax(0, w), qMax(0, h));
}

QPointF Q3DSSceneManager::calculateLayerPos(Q3DSLayerNode *layer3DS, const QSize &parentSize)
{
    float x = 0;
    switch (layer3DS->horizontalFields()) {
    case Q3DSLayerNode::LeftWidth:
        Q_FALLTHROUGH();
    case Q3DSLayerNode::LeftRight:
    {
        float left = layer3DS->leftUnits() == Q3DSLayerNode::Percent
                ? layer3DS->left() * 0.01f * parentSize.width()
                : layer3DS->left();
        x = left;
    }
        break;
    case Q3DSLayerNode::WidthRight:
    {
        float right = layer3DS->rightUnits() == Q3DSLayerNode::Percent
                ? parentSize.width() - (layer3DS->right() * 0.01f * parentSize.width())
                : parentSize.width() - layer3DS->right();
        float width = layer3DS->widthUnits() == Q3DSLayerNode::Percent
                ? layer3DS->width() * 0.01f * parentSize.width()
                : layer3DS->width();
        x = right - width + 1;
    }
        break;
    default:
        Q_UNREACHABLE();
        break;
    }

    float y = 0;
    switch (layer3DS->verticalFields()) {
    case Q3DSLayerNode::TopHeight:
        Q_FALLTHROUGH();
    case Q3DSLayerNode::TopBottom:
    {
        float top = layer3DS->topUnits() == Q3DSLayerNode::Percent
                ? layer3DS->top() * 0.01f * parentSize.height()
                : layer3DS->top();
        y = top;
    }
        break;
    case Q3DSLayerNode::HeightBottom:
    {
        float bottom = layer3DS->bottomUnits() == Q3DSLayerNode::Percent
                ? parentSize.height() - (layer3DS->bottom() * 0.01f * parentSize.height())
                : parentSize.height() - layer3DS->bottom();
        float height = layer3DS->heightUnits() == Q3DSLayerNode::Percent
                ? layer3DS->height() * 0.01f * parentSize.height()
                : layer3DS->height();
        y = bottom - height + 1;
    }
        break;
    default:
        Q_UNREACHABLE();
        break;
    }

    return QPointF(x, y);
}

void Q3DSSceneManager::updateSizesForLayer(Q3DSLayerNode *layer3DS, const QSize &newParentSize)
{
    if (newParentSize.isEmpty())
        return;

    // note: no bail out when newParentSize == data->parentSize, the other values could still be out of date

    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);

    data->layerPos = calculateLayerPos(layer3DS, newParentSize);
    data->layerSize = calculateLayerSize(layer3DS, newParentSize);
    data->parentSize = newParentSize;

    setLayerCameraSizeProperties(layer3DS);
    setLayerSizeProperties(layer3DS);
}

static bool isFitTypeScaleMode(Q3DSCameraNode *cam3DS)
{
    return cam3DS->scaleMode() == Q3DSCameraNode::Fit
            || cam3DS->scaleMode() == Q3DSCameraNode::FitHorizontal
            || cam3DS->scaleMode() == Q3DSCameraNode::FitVertical;
}

static bool isVerticalAdjust(Q3DSCameraNode *cam3DS, float presentationAspect, float aspect)
{
    return (cam3DS->scaleMode() == Q3DSCameraNode::Fit && aspect >= presentationAspect)
            || cam3DS->scaleMode() == Q3DSCameraNode::FitVertical;
}

void Q3DSSceneManager::setSingleCameraSizeProperties(Q3DSLayerAttached *data, Qt3DRender::QCamera *camera, const QVector2D &offset)
{
    // The aspect ratio is not simply based on the viewport (layer)
    const float layerAspect = data->layerSize.height() ? data->layerSize.width() / float(data->layerSize.height()) : 0.0f;
    // ...but may take the presentation design size into account as well.
    const float presentationAspect = m_presentationSize.height() ? m_presentationSize.width() / float(m_presentationSize.height()) : 0.0f;

    const float aspect = isFitTypeScaleMode(data->cam3DS) ? layerAspect : presentationAspect;

    // Qt3D viewMatrix doesn't use the transform scale so apply zoom to projection matrix
    const float z = 1.0f / data->cam3DS->zoom();
    // First thing to do is always to reset the type back from Custom to Perspective/Orthographic.
    if (data->cam3DS->orthographic()) {
        camera->setProjectionType(Qt3DRender::QCameraLens::OrthographicProjection);
        float halfWidth = m_presentationSize.width() / 2.0f;
        float halfHeight = m_presentationSize.height() / 2.0f;
        QMatrix4x4 proj = camera->projectionMatrix();
        float *projData = proj.data();
        if (isVerticalAdjust(data->cam3DS, presentationAspect, aspect)) {
            projData[0] = 1.0f / (halfHeight * aspect) * z;
            projData[5] = 1.0f / halfHeight * z;
        } else {
            projData[0] = 1.0f / halfWidth * z;
            projData[5] = 1.0f / (halfWidth / aspect) * z;
        }
        camera->setProjectionMatrix(proj);
    } else {
        camera->setProjectionType(Qt3DRender::QCameraLens::PerspectiveProjection);

        if (isVerticalAdjust(data->cam3DS, presentationAspect, aspect)) {
            if (data->cam3DS->fovHorizontal())
                camera->setFieldOfView(data->cam3DS->verticalFov(aspect));
            camera->setAspectRatio(aspect);
            if (!offset.isNull() || !qFuzzyCompare(z, 1.0f)) {
                QMatrix4x4 proj = camera->projectionMatrix();
                float *projData = proj.data();
                projData[12] += offset.x();
                projData[13] += offset.y();
                projData[0] *= z;
                projData[5] *= z;
                // Mode changes to Custom.
                camera->setProjectionMatrix(proj);
            }
        } else {
            if (data->cam3DS->fovHorizontal())
                camera->setFieldOfView(data->cam3DS->verticalFov(presentationAspect));
            camera->setAspectRatio(presentationAspect);
            QMatrix4x4 proj = camera->projectionMatrix();
            float *projData = proj.data();
            if (!qFuzzyIsNull(presentationAspect))
                projData[5] *= aspect / presentationAspect;
            if (!offset.isNull()) {
                projData[12] += offset.x();
                projData[13] += offset.y();
            }
            if (!qFuzzyCompare(z, 1.0f)) {
                projData[0] *= z;
                projData[5] *= z;
            }
            // Mode changes to Custom.
            camera->setProjectionMatrix(proj);
        }
    }
}

void Q3DSSceneManager::setLayerCameraSizeProperties(Q3DSLayerNode *layer3DS, const QVector2D &offset)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    if (!data->cam3DS)
        return;

    Qt3DRender::QCamera *camera = static_cast<Qt3DRender::QCamera *>(data->eyeMono->cameraSelector->camera());
    setSingleCameraSizeProperties(data, camera, offset);
    if (m_engine->isStereoscopic()) {
        Qt3DRender::QCamera *cameraLeft = static_cast<Qt3DRender::QCamera *>(data->eyeLeft->cameraSelector->camera());
        setSingleCameraSizeProperties(data, cameraLeft, offset);
        Qt3DRender::QCamera *cameraRight = static_cast<Qt3DRender::QCamera *>(data->eyeRight->cameraSelector->camera());
        setSingleCameraSizeProperties(data, cameraRight, offset);

        // Adjust left & right camera eyeseparation
        const float eyeSeparation = m_engine->viewportSettings()->stereoEyeSeparation();
        cameraLeft->setPosition(camera->position());
        cameraRight->setPosition(camera->position());
        cameraLeft->setViewCenter(camera->viewCenter());
        cameraRight->setViewCenter(camera->viewCenter());
        QVector3D leftMovement(-eyeSeparation, 0, 0);
        QVector3D rightMovement(eyeSeparation, 0, 0);
        cameraLeft->translate(leftMovement, Qt3DRender::QCamera::TranslateViewCenter);
        cameraRight->translate(rightMovement, Qt3DRender::QCamera::TranslateViewCenter);
    }

}

void Q3DSSceneManager::setLayerSizeProperties(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    const QSize layerPixelSize = safeLayerPixelSize(data);
    const QSize layerSize = safeLayerPixelSize(data->layerSize, 1); // for when SSAA is to be ignored
    for (const Q3DSLayerAttached::SizeManagedTexture &t : data->sizeManagedTextures) {
        if (!t.flags.testFlag(Q3DSLayerAttached::SizeManagedTexture::CustomSizeCalculation)) {
            int w = layerSize.width();
            int h = layerSize.height();
            if (!t.flags.testFlag(Q3DSLayerAttached::SizeManagedTexture::IgnoreSSAA)) {
                w = layerPixelSize.width();
                h = layerPixelSize.height();
            }
            if (t.flags.testFlag(Q3DSLayerAttached::SizeManagedTexture::StereoscopicView)
                                 && !m_engine->isStereoscopic()) {
                // When not in stereoscopic mode, reduce left & right eye texture sizes to
                // not consume memory. Once user switches to stereoscopic, they will be resized
                // automatically to full size again.
                w = 1;
                h = 1;

            }
            t.texture->setWidth(w);
            t.texture->setHeight(h);
        }
        if (t.sizeChangeCallback)
            t.sizeChangeCallback(layer3DS);
    }
    if (data->updateCompositorCalculations)
        data->updateCompositorCalculations();
    if (data->updateSubPresentationSize)
        data->updateSubPresentationSize();
    for (Q3DSLayerAttached::SizeChangeCallback callback : qAsConst(data->layerSizeChangeCallbacks))
        callback(layer3DS);
    emit m_engine->layerResized(layer3DS);
}

static void setClearColorForClearBuffers(Qt3DRender::QClearBuffers *clearBuffers, Q3DSLayerNode *layer3DS)
{
    switch (layer3DS->layerBackground()) {
    case Q3DSLayerNode::Transparent:
        clearBuffers->setClearColor(Qt::transparent);
        break;
    case Q3DSLayerNode::SolidColor:
        clearBuffers->setClearColor(layer3DS->backgroundColor());
        break;
    default:
        clearBuffers->setClearColor(Qt::black);
        break;
    }
}

namespace  {
qreal qLog2(qreal x) {
    return qLn(x) / 0.693147180559945309417;
}
}

// non-size-dependent properties
void Q3DSSceneManager::setLayerProperties(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);

    // not available for subpresentation layers
    if (data->eyeMono->clearBuffers)
        setClearColorForClearBuffers(data->eyeMono->clearBuffers, layer3DS);
    if (data->eyeLeft->clearBuffers)
        setClearColorForClearBuffers(data->eyeLeft->clearBuffers, layer3DS);
    if (data->eyeRight->clearBuffers)
        setClearColorForClearBuffers(data->eyeRight->clearBuffers, layer3DS);

    if (data->compositorEntity) // may not exist if this is still buildLayer()
        data->compositorEntity->setEnabled(layer3DS->flags().testFlag(Q3DSNode::Active) && (data->visibilityTag == Q3DSGraphObjectAttached::Visible));

    // IBL Probes
    if (!data->iblProbeData.lightProbeProperties) {
        data->iblProbeData.lightProbeProperties = new Qt3DRender::QParameter;
        data->iblProbeData.lightProbeProperties->setName(QLatin1String("light_probe_props"));
    }
    data->iblProbeData.lightProbeProperties->setValue(QVector4D(0.0f, 0.0f, layer3DS->probeHorizon(), layer3DS->probeBright() * 0.01f));

    if (!data->iblProbeData.lightProbe2Properties) {
        data->iblProbeData.lightProbe2Properties = new Qt3DRender::QParameter;
        data->iblProbeData.lightProbe2Properties->setName(QLatin1String("light_probe2_props"));
    }
    data->iblProbeData.lightProbe2Properties->setValue(QVector4D(0.0f, 0.0f, 0.0f, 0.0f));

    if (!data->iblProbeData.lightProbeOptions) {
        data->iblProbeData.lightProbeOptions = new Qt3DRender::QParameter;
        data->iblProbeData.lightProbeOptions->setName(QLatin1String("light_probe_opts"));

    }
    data->iblProbeData.lightProbeOptions->setValue(QVector4D(0.01745329251994329547f * layer3DS->probeFov(), 0.0f, 0.0f, 0.0f));

    if (layer3DS->lightProbe()) {
        // initialize light probe parameters if necessary
        if (!data->iblProbeData.lightProbeTexture) {
            data->iblProbeData.lightProbeTexture = Q3DSImageManager::instance().newReloadableTextureForImage(
                        m_rootEntity, Q3DSImageManager::GenerateMipMapsForIBL,
                        layer3DS->lightProbe()->id(),
                        m_profiler, "iblProbe texture for image %s", layer3DS->lightProbe()->id().constData());
        }
        if (!data->iblProbeData.lightProbeSampler) {
            data->iblProbeData.lightProbeSampler = new Qt3DRender::QParameter;
            data->iblProbeData.lightProbeSampler->setName(QLatin1String("light_probe"));
        }

        if (!data->iblProbeData.lightProbeOffset) {
            data->iblProbeData.lightProbeOffset = new Qt3DRender::QParameter;
            data->iblProbeData.lightProbeOffset->setName(QLatin1String("light_probe_offset"));
        }

        if (!data->iblProbeData.lightProbeRotation) {
            data->iblProbeData.lightProbeRotation = new Qt3DRender::QParameter;
            data->iblProbeData.lightProbeRotation->setName(QLatin1String("light_probe_rotation"));
        }

        // Update light probe parameter values

        // also sets min/mag and generates mipmaps
        data->iblProbeData.lightProbeTexture->setSource(m_presentation->imageUrl(
                                                            layer3DS->lightProbe()->sourcePath()));
        data->iblProbeData.lightProbeTexture->onLoad([](Qt3DRender::QAbstractTexture *texture,
                                                        Q3DSLayerNode *layer3DS) {
            Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
            data->iblProbeData.lightProbeSampler->setValue(QVariant::fromValue(texture));

            Qt3DRender::QTextureWrapMode wrapMode;

            switch (layer3DS->lightProbe()->horizontalTiling()) {
            case Q3DSImage::Tiled:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
                break;
            case Q3DSImage::Mirrored:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                break;
            default:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
                break;
            }

            switch (layer3DS->lightProbe()->verticalTiling()) {
            case Q3DSImage::Tiled:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
                break;
            case Q3DSImage::Mirrored:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                break;
            default:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
                break;
            }

            texture->setWrapMode(wrapMode);

            const QMatrix4x4 &textureTransform = layer3DS->lightProbe()->textureTransform();
            const float *m = textureTransform.constData();

            const QSize texSize = Q3DSImageManager::instance().size(texture);
            float mipLevels = float(qCeil(qLog2(qMax(texSize.width(), texSize.height()))));
            QVector4D offsets(m[12], m[13], 0.0f, mipLevels);
            data->iblProbeData.lightProbeOffset->setValue(offsets);

            QVector4D rotations(m[0], m[4], m[1], m[5]);
            data->iblProbeData.lightProbeRotation->setValue(rotations);
        }, layer3DS);

        data->iblProbeData.lightProbeTexture->onUnload([](Qt3DRender::QAbstractTexture *texture,
                                                          Q3DSLayerNode *layer3DS) {
            Q_UNUSED(texture);
            Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
            data->iblProbeData.lightProbeSampler->setValue({});
            QVector4D offsets(0.f, 0.f, 0.f, 0.f);
            data->iblProbeData.lightProbeOffset->setValue(offsets);

            QVector4D rotations(0.f, 0.f, 0.f, 0.f);
            data->iblProbeData.lightProbeRotation->setValue(rotations);
        }, layer3DS);


        if (layer3DS->lightProbe2()) {
            // Initialize light probe 2 parameters
            if (!data->iblProbeData.lightProbe2Texture) {
                data->iblProbeData.lightProbe2Texture
                        = Q3DSImageManager::instance().newReloadableTextureForImage(
                            m_rootEntity, Q3DSImageManager::GenerateMipMapsForIBL,
                            layer3DS->lightProbe2()->id(),
                            m_profiler, "iblProbe2 texture for image %s",
                            layer3DS->lightProbe2()->id().constData());
            }

            if (!data->iblProbeData.lightProbe2Sampler) {
                data->iblProbeData.lightProbe2Sampler = new Qt3DRender::QParameter;
                data->iblProbeData.lightProbe2Sampler->setName(QLatin1String("light_probe2"));
            }

            // Update light probe 2 parameter values

            // also sets min/mag and generates mipmaps
            data->iblProbeData.lightProbe2Texture->setSource(
                        m_presentation->imageUrl(layer3DS->lightProbe2()->sourcePath()));
            data->iblProbeData.lightProbe2Texture->onLoad([](Qt3DRender::QAbstractTexture *texture,
                                                             Q3DSLayerNode *layer3DS) {
                Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
                data->iblProbeData.lightProbe2Sampler->setValue(QVariant::fromValue(texture));

                Qt3DRender::QTextureWrapMode wrapMode;

                switch (layer3DS->lightProbe()->horizontalTiling()) {
                case Q3DSImage::Tiled:
                    wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
                    break;
                case Q3DSImage::Mirrored:
                    wrapMode.setX(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                    break;
                default:
                    wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
                    break;
                }

                switch (layer3DS->lightProbe()->verticalTiling()) {
                case Q3DSImage::Tiled:
                    wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
                    break;
                case Q3DSImage::Mirrored:
                    wrapMode.setY(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                    break;
                default:
                    wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
                    break;
                }

                texture->setWrapMode(wrapMode);

                QVector4D probe2Props(layer3DS->probe2Window(), layer3DS->probe2Pos(),
                                      layer3DS->probe2Fade(), 1.0f);
                data->iblProbeData.lightProbe2Properties->setValue(probe2Props);
                const QMatrix4x4 &textureTransform = layer3DS->lightProbe2()->textureTransform();
                const float *m = textureTransform.constData();
                QVector4D probeProps(m[12], m[13], layer3DS->probeHorizon(),
                        layer3DS->probeBright() * 0.01f);
                data->iblProbeData.lightProbeProperties->setValue(probeProps);
            }, layer3DS);
            data->iblProbeData.lightProbe2Texture->onUnload(
                        [](Qt3DRender::QAbstractTexture *texture, Q3DSLayerNode *layer3DS) {
                Q_UNUSED(texture);
                Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
                data->iblProbeData.lightProbe2Sampler->setValue({});
                data->iblProbeData.lightProbe2Properties->setValue({});
                data->iblProbeData.lightProbeProperties->setValue({});
            }, layer3DS);
        } else {
            data->iblProbeData.lightProbe2Properties->setValue(QVector4D(0.0f, 0.0f, 0.0f, 0.0f));
            data->iblProbeData.lightProbeProperties->setValue(
                        QVector4D(0.0f, 0.0f, layer3DS->probeHorizon(),
                                  layer3DS->probeBright() * 0.01f));
        }
    }
}

QVector<Qt3DRender::QCamera *> Q3DSSceneManager::buildCameras(Q3DSCameraNode *cam3DS,
                                                              Q3DSLayerNode *layer3DS,
                                                              Qt3DCore::QEntity *parent)
{
    QVector<Qt3DRender::QCamera *> cameras;
    Qt3DRender::QCamera *camera = new Qt3DRender::QCamera(parent);
    cameras << camera;
    camera->setObjectName(QObject::tr("camera %1 for %2").arg(QString::fromUtf8(cam3DS->id())).arg(QString::fromUtf8(layer3DS->id())));
    Qt3DRender::QCamera *cameraLeft = new Qt3DRender::QCamera(parent);
    cameras << cameraLeft;
    cameraLeft->setObjectName(QObject::tr("left camera %1 for %2").arg(QString::fromUtf8(cam3DS->id())).arg(QString::fromUtf8(layer3DS->id())));
    Qt3DRender::QCamera *cameraRight = new Qt3DRender::QCamera(parent);
    cameras << cameraRight;
    cameraRight->setObjectName(QObject::tr("right camera %1 for %2").arg(QString::fromUtf8(cam3DS->id())).arg(QString::fromUtf8(layer3DS->id())));

    Q3DSCameraAttached *data = new Q3DSCameraAttached;
    data->transform = new Qt3DCore::QTransform;
    data->camera = camera;
    data->cameraLeft = cameraLeft;
    data->cameraRight = cameraRight;
    data->layer3DS = layer3DS;
    cam3DS->setAttached(data);
    // Make sure data->entity, globalTransform, etc. are usable. Note however
    // that during the initial scene building globalVisibility will typically
    // be false at this stage due to the slideplayer only generating visibility
    // changes later on.
    // TODO: Need to handle separate cameras here somehow?
    setNodeProperties(cam3DS, camera, data->transform, NodePropUpdateAttached | NodePropUpdateGlobalsRecursively);
    setCameraProperties(cam3DS, Q3DSNode::TransformChanges);
    data->propertyChangeObserverIndex = cam3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = cam3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
    return cameras;
}

static QMatrix4x4 generateRotationMatrix(const QVector3D &nodeRotation,
                                         Q3DSNode::RotationOrder order)
{
    QMatrix4x4 rotationMatrix;
    switch (order) {
    case Q3DSNode::XYZ:
    case Q3DSNode::ZYXr:
        rotationMatrix.rotate(nodeRotation.x(), QVector3D(1, 0, 0));
        rotationMatrix.rotate(nodeRotation.y(), QVector3D(0, 1, 0));
        rotationMatrix.rotate(nodeRotation.z(), QVector3D(0, 0, 1));
        break;
    case Q3DSNode::XYZr: // XYZr is what the editor outputs in practice
    case Q3DSNode::ZYX:
        rotationMatrix.rotate(nodeRotation.z(), QVector3D(0, 0, 1));
        rotationMatrix.rotate(nodeRotation.y(), QVector3D(0, 1, 0));
        rotationMatrix.rotate(nodeRotation.x(), QVector3D(1, 0, 0));
        break;
    case Q3DSNode::YZX:
    case Q3DSNode::XZYr:
        rotationMatrix.rotate(nodeRotation.y(), QVector3D(0, 1, 0));
        rotationMatrix.rotate(nodeRotation.z(), QVector3D(0, 0, 1));
        rotationMatrix.rotate(nodeRotation.x(), QVector3D(1, 0, 0));
        break;
    case Q3DSNode::ZXY:
    case Q3DSNode::YXZr:
        rotationMatrix.rotate(nodeRotation.z(), QVector3D(0, 0, 1));
        rotationMatrix.rotate(nodeRotation.x(), QVector3D(1, 0, 0));
        rotationMatrix.rotate(nodeRotation.y(), QVector3D(0, 1, 0));
        break;
    case Q3DSNode::XZY:
    case Q3DSNode::YZXr:
        rotationMatrix.rotate(nodeRotation.x(), QVector3D(1, 0, 0));
        rotationMatrix.rotate(nodeRotation.z(), QVector3D(0, 0, 1));
        rotationMatrix.rotate(nodeRotation.y(), QVector3D(0, 1, 0));
        break;
    case Q3DSNode::YXZ:
    case Q3DSNode::ZXYr:
        rotationMatrix.rotate(nodeRotation.y(), QVector3D(0, 1, 0));
        rotationMatrix.rotate(nodeRotation.x(), QVector3D(1, 0, 0));
        rotationMatrix.rotate(nodeRotation.z(), QVector3D(0, 0, 1));
        break;
    default:
        break;
    }
    return rotationMatrix;
}

static QVector3D directionFromTransform(const QMatrix4x4 &t, bool lh)
{
    const QMatrix3x3 m = t.normalMatrix();
    const QVector3D c0(m(0, 0), m(1, 0), m(2, 0));
    const QVector3D c1(m(0, 1), m(1, 1), m(2, 1));
    const QVector3D c2(m(0, 2), m(1, 2), m(2, 2));
    const QVector3D d(0, 0, lh ? -1 : 1);
    QVector3D v(c0 * d.x() + c1 * d.y() + c2 * d.z());
    return v.normalized();
}

static void adjustRotationLeftToRight(QMatrix4x4 *m)
{
    float *p = m->data();
    p[2] *= -1;
    p[4 + 2] *= -1;
    p[8] *= -1;
    p[8 + 1] *= -1;
}

void Q3DSSceneManager::setEyeCameraProperties(Q3DSCameraNode *camNode, Qt3DRender::QCamera *camera)
{
    camera->setProjectionType(camNode->orthographic() ? Qt3DRender::QCameraLens::OrthographicProjection
                                                      : Qt3DRender::QCameraLens::PerspectiveProjection);
    if (camNode->orthographic()) {
        camera->setLeft(-1);
        camera->setRight(1);
        camera->setTop(1);
        camera->setBottom(-1);
    } else {
        camera->setFieldOfView(camNode->fov());
    }
    camera->setNearPlane(camNode->clipNear());
    camera->setFarPlane(camNode->clipFar());
}

void Q3DSSceneManager::setCameraProperties(Q3DSCameraNode *camNode, int changeFlags)
{
    Q3DSCameraAttached *data = static_cast<Q3DSCameraAttached *>(camNode->attached());
    Q_ASSERT(data);

    // Main camera
    Qt3DRender::QCamera *camera = data->camera;
    setEyeCameraProperties(camNode, camera);

    // Left camera
    Qt3DRender::QCamera *cameraLeft = data->cameraLeft;
    setEyeCameraProperties(camNode, cameraLeft);

    // Right camera
    Qt3DRender::QCamera *cameraRight = data->cameraRight;
    setEyeCameraProperties(camNode, cameraRight);

    if (!(changeFlags & Q3DSNode::TransformChanges))
        return;

    // Q3DSCameraNode is like an ordinary node with pos/rot/scale, whereas Qt3D needs a position + view center
    const bool leftHanded = camNode->orientation() == Q3DSNode::LeftHanded;
    const float lhFactor = leftHanded ? -1.0f : 1.0f;
    // ### pivot?
    QMatrix4x4 t = generateRotationMatrix(camNode->rotation(), camNode->rotationOrder());

    if (leftHanded)
        adjustRotationLeftToRight(&t);
    QVector3D pos = camNode->position();
    pos.setZ(pos.z() * lhFactor);
    camera->setPosition(pos);
    cameraLeft->setPosition(pos);
    cameraRight->setPosition(pos);
    // For the viewCenter make up some point in the correct direction.
    const QVector3D d = directionFromTransform(t, leftHanded);
    const QVector3D center(pos + d);
    camera->setViewCenter(center);
    cameraLeft->setViewCenter(center);
    cameraRight->setViewCenter(center);
    // roll is handled in the up vector
    QVector3D upVec(0, 1, 0);
    upVec = t * upVec;
    camera->setUpVector(upVec);
    cameraLeft->setUpVector(upVec);
    cameraRight->setUpVector(upVec);
}

// Returns true if the camera actually changed
bool Q3DSSceneManager::setActiveLayerCamera(Q3DSCameraNode *cam3DS, Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    if (layerData->cam3DS != cam3DS) {
        layerData->cam3DS = cam3DS;
        if (cam3DS) {
            Q3DSCameraAttached *activeCameraData = static_cast<Q3DSCameraAttached *>(cam3DS->attached());
            layerData->eyeMono->cameraSelector->setCamera(activeCameraData->camera);
            layerData->eyeLeft->cameraSelector->setCamera(activeCameraData->cameraLeft);
            layerData->eyeRight->cameraSelector->setCamera(activeCameraData->cameraRight);
        } else {
            layerData->eyeMono->cameraSelector->setCamera(nullptr);
            layerData->eyeLeft->cameraSelector->setCamera(nullptr);
            layerData->eyeRight->cameraSelector->setCamera(nullptr);
        }

        if (cam3DS) {
            setCameraProperties(cam3DS, Q3DSNode::TransformChanges);
            layerData->cameraPropertiesParam->setValue(QVector2D(cam3DS->clipNear(), cam3DS->clipFar()));
        }

        // may not have a valid size yet
        if (!layerData->layerSize.isEmpty()) {
            setLayerCameraSizeProperties(layer3DS);
            setLayerSizeProperties(layer3DS);
        }

        layerData->wasDirty = true;

        qCDebug(lcScene, "Layer %s uses camera %s", layer3DS->id().constData(), cam3DS ? cam3DS->id().constData() : "null");
        return true;
    }
    return false;
}

// layers use the first active camera for rendering
Q3DSCameraNode *Q3DSSceneManager::findFirstCamera(Q3DSLayerNode *layer3DS)
{
    // Pick the first active camera encountered when walking depth-first.
    std::function<Q3DSCameraNode *(Q3DSGraphObject *)> f;
    f = [&f,this](Q3DSGraphObject *obj) -> Q3DSCameraNode* {
        while (obj) {
            if (obj->type() == Q3DSGraphObject::Camera) {
                Q3DSCameraNode *cam = static_cast<Q3DSCameraNode *>(obj);
                const bool active = cam->attached() && cam->attached<Q3DSCameraAttached>()->globalEffectiveVisibility;
                if (active) {
                    // Check if camera is on the current slide
                    Q3DSComponentNode *component = cam->attached() ? cam->attached()->component : nullptr;
                    // Check that object exists current slide scope (master + current)
                    Q3DSSlide *master = component ? component->masterSlide () : m_masterSlide;
                    Q3DSSlide *currentSlide = component ? component->currentSlide() : m_currentSlide;
                    if ((master->objects().contains(cam) || currentSlide->objects().contains(cam)) && isComponentVisible(component))
                        return cam;
                }
            }
            if (Q3DSCameraNode *c = f(obj->firstChild()))
                return c;
            obj = obj->nextSibling();
        }
        return nullptr;
    };
    return f(layer3DS->firstChild());
}

static void prepareSizeDependentTexture(Qt3DRender::QAbstractTexture *texture,
                                        Q3DSLayerNode *layer3DS,
                                        Q3DSLayerAttached::SizeChangeCallback callback = nullptr,
                                        Q3DSLayerAttached::SizeManagedTexture::Flags flags = 0)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());

    const int scale = !flags.testFlag(Q3DSLayerAttached::SizeManagedTexture::IgnoreSSAA) ? data->ssaaScaleFactor : 1;
    const QSize layerPixelSize = safeLayerPixelSize(data->layerSize, scale);
    texture->setWidth(layerPixelSize.width());
    texture->setHeight(layerPixelSize.height());

    // the layer will resize the texture automatically
    data->sizeManagedTextures << Q3DSLayerAttached::SizeManagedTexture(texture, callback, flags);
}

void Q3DSSceneManager::setEyeDepthTextureEnabled(Q3DSLayerNode *layer3DS, Q3DSEyeData *eyeData, bool enabled)
{
    if (enabled == eyeData->depthTextureData.enabled)
        return;

    eyeData->depthTextureData.enabled = enabled;
    qCDebug(lcPerf, "Depth texture enabled for layer %s is now %d", layer3DS->id().constData(), enabled);
    if (enabled) {
        if (!eyeData->depthTextureData.depthTexture) {
            Qt3DRender::QTexture2D *depthTex = new Qt3DRender::QTexture2D;
            m_profiler->trackNewObject(depthTex, Q3DSProfiler::Texture2DObject,
                                       "Depth texture for layer %s", layer3DS->id().constData());
            depthTex->setFormat(Qt3DRender::QAbstractTexture::DepthFormat);
            depthTex->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
            depthTex->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
            prepareSizeDependentTexture(depthTex, layer3DS);
            eyeData->depthTextureData.depthTexture = depthTex;

            Qt3DRender::QRenderTarget *depthRt = new Qt3DRender::QRenderTarget;
            m_profiler->trackNewObject(depthRt, Q3DSProfiler::RenderTargetObject,
                                       "Depth texture RT for layer %s", layer3DS->id().constData());
            Qt3DRender::QRenderTargetOutput *depthRtOutput = new Qt3DRender::QRenderTargetOutput;
            depthRtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Depth);
            depthRtOutput->setTexture(eyeData->depthTextureData.depthTexture);
            depthRt->addOutput(depthRtOutput);
            eyeData->depthTextureData.rtSelector->setTarget(depthRt);

            eyeData->depthTextureData.clearBuffers = new Qt3DRender::QClearBuffers(eyeData->depthTextureData.rtSelector);
            eyeData->depthTextureData.clearBuffers->setBuffers(Qt3DRender::QClearBuffers::DepthBuffer);
            new Qt3DRender::QNoDraw(eyeData->depthTextureData.clearBuffers);

            Qt3DRender::QRenderPassFilter *depthTexFilter = new Qt3DRender::QRenderPassFilter(eyeData->depthTextureData.rtSelector);
            Qt3DRender::QFilterKey *depthFilterKey = new Qt3DRender::QFilterKey;
            depthFilterKey->setName(QLatin1String("pass"));
            depthFilterKey->setValue(QLatin1String("depth"));
            depthTexFilter->addMatch(depthFilterKey);
            Qt3DRender::QSortPolicy *sortPolicy = opaquePassSortPolicy(depthTexFilter);
            eyeData->depthTextureData.layerFilterOpaque = new Qt3DRender::QLayerFilter(sortPolicy);

            depthTexFilter = new Qt3DRender::QRenderPassFilter(eyeData->depthTextureData.rtSelector);
            depthTexFilter->addMatch(depthFilterKey);
            sortPolicy = transparentPassSortPolicy(depthTexFilter);
            eyeData->depthTextureData.layerFilterTransparent = new Qt3DRender::QLayerFilter(sortPolicy);
        }

        eyeData->depthTextureData.clearBuffers->setEnabled(true);
        eyeData->depthTextureData.layerFilterOpaque->addLayer(eyeData->opaqueTag);
        eyeData->depthTextureData.layerFilterTransparent->addLayer(eyeData->transparentTag);
    } else if (eyeData->depthTextureData.depthTexture) {
        eyeData->depthTextureData.clearBuffers->setEnabled(false);
        eyeData->depthTextureData.layerFilterOpaque->removeLayer(eyeData->opaqueTag);
        eyeData->depthTextureData.layerFilterTransparent->removeLayer(eyeData->transparentTag);
    }
}

void Q3DSSceneManager::setDepthTextureEnabled(Q3DSLayerNode *layer3DS, bool enabled)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);
    setEyeDepthTextureEnabled(layer3DS, data->eyeMono, enabled);
    setEyeDepthTextureEnabled(layer3DS, data->eyeLeft, enabled);
    setEyeDepthTextureEnabled(layer3DS, data->eyeRight, enabled);
}

void Q3DSSceneManager::setSsaoTextureEnabled(Q3DSLayerNode *layer3DS, bool enabled)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);
    if (enabled == data->ssaoTextureData.enabled)
        return;

    data->ssaoTextureData.enabled = enabled;
    qCDebug(lcPerf, "SSAO enabled for layer %s is now %d", layer3DS->id().constData(), enabled);

    if (enabled) {
        setDepthTextureEnabled(layer3DS, true);

        if (!data->ssaoTextureData.ssaoTexture) {
            Qt3DRender::QTexture2D *ssaoTex = new Qt3DRender::QTexture2D;
            m_profiler->trackNewObject(ssaoTex, Q3DSProfiler::Texture2DObject,
                                       "SSAO texture for layer %s", layer3DS->id().constData());
            ssaoTex->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
            ssaoTex->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
            ssaoTex->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
            // it's not just the texture that needs dynamic resizing, but values
            // derived from the size have to be recalculated as well, hence the callback.
            prepareSizeDependentTexture(ssaoTex, layer3DS,
                                        std::bind(&Q3DSSceneManager::updateAoParameters, this, std::placeholders::_1));
            data->ssaoTextureData.ssaoTexture = ssaoTex;

            Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;
            m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject,
                                       "SSAO texture RT for layer %s", layer3DS->id().constData());
            Qt3DRender::QRenderTargetOutput *rtOutput = new Qt3DRender::QRenderTargetOutput;
            rtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
            rtOutput->setTexture(data->ssaoTextureData.ssaoTexture);
            rt->addOutput(rtOutput);
            data->ssaoTextureData.rtSelector->setTarget(rt);

            data->ssaoTextureData.clearBuffers = new Qt3DRender::QClearBuffers(data->ssaoTextureData.rtSelector);
            data->ssaoTextureData.clearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorBuffer);
            setClearColorForClearBuffers(data->ssaoTextureData.clearBuffers, layer3DS);
            new Qt3DRender::QNoDraw(data->ssaoTextureData.clearBuffers);

            Qt3DRender::QRenderPassFilter *ssaoFilter = new Qt3DRender::QRenderPassFilter(data->ssaoTextureData.rtSelector);
            Qt3DRender::QFilterKey *ssaoFilterKey = new Qt3DRender::QFilterKey;
            ssaoFilterKey->setName(QLatin1String("pass"));
            ssaoFilterKey->setValue(QLatin1String("ssao"));
            ssaoFilter->addMatch(ssaoFilterKey);
            data->ssaoTextureData.layerFilter = new Qt3DRender::QLayerFilter(ssaoFilter);

            data->ssaoTextureData.depthSampler = new Qt3DRender::QParameter;
            data->ssaoTextureData.depthSampler->setName(QLatin1String("depth_sampler"));
            // TODO: Duplicate this method if ssaoTextureData is also duplicated and do for all eyes
            data->ssaoTextureData.depthSampler->setValue(QVariant::fromValue(data->eyeMono->depthTextureData.depthTexture));

            data->ssaoTextureData.aoDataBuf = new Qt3DRender::QBuffer(data->entity);
            data->ssaoTextureData.aoDataBuf->setObjectName(QLatin1String("ambient occlusion pass constant buffer"));
            updateAoParameters(layer3DS);

            data->ssaoTextureData.aoDataBufParam = new Qt3DRender::QParameter;
            data->ssaoTextureData.aoDataBufParam->setName(QLatin1String("cbAoShadow"));
            data->ssaoTextureData.aoDataBufParam->setValue(QVariant::fromValue(data->ssaoTextureData.aoDataBuf));

            ssaoFilter->addParameter(data->ssaoTextureData.depthSampler);
            ssaoFilter->addParameter(data->cameraPropertiesParam);
            ssaoFilter->addParameter(data->ssaoTextureData.aoDataBufParam);

            // for the main passes
            data->ssaoTextureData.ssaoTextureSampler = new Qt3DRender::QParameter;
            data->ssaoTextureData.ssaoTextureSampler->setName(QLatin1String("ao_sampler"));
            data->ssaoTextureData.ssaoTextureSampler->setValue(QVariant::fromValue(data->ssaoTextureData.ssaoTexture));
        }

        data->ssaoTextureData.clearBuffers->setEnabled(true);
        data->ssaoTextureData.layerFilter->addLayer(m_fsQuadTag);
    } else {
        data->ssaoTextureData.clearBuffers->setEnabled(false);
        data->ssaoTextureData.layerFilter->removeLayer(m_fsQuadTag);
    }
}

void Q3DSSceneManager::updateAoParameters(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);
    if (!data->ssaoTextureData.aoDataBuf)
        return;

    QByteArray buf;
    buf.resize(sizeof(Q3DSAmbientOcclusionData));
    Q3DSAmbientOcclusionData *p = reinterpret_cast<Q3DSAmbientOcclusionData *>(buf.data());

    p->aoProperties = QVector4D(layer3DS->aoStrength() * 0.01f,
                                layer3DS->aoDistance() * 0.4f,
                                layer3DS->aoSoftness() * 0.02f,
                                layer3DS->aoBias());

    p->aoProperties2 = QVector4D(layer3DS->aoSampleRate(),
                                 layer3DS->aoDither() ? 1.0f : 0.0f,
                                 0.0f,
                                 0.0f);

    p->shadowProperties = QVector4D(layer3DS->shadowStrength() * 0.01f,
                                    layer3DS->shadowDist(),
                                    layer3DS->shadowSoftness() * 0.01f,
                                    layer3DS->shadowBias());

    float R2 = layer3DS->aoDistance() * layer3DS->aoDistance() * 0.16f;
    float rw = data->eyeMono->depthTextureData.depthTexture->width();
    float rh = data->eyeMono->depthTextureData.depthTexture->height();
    float fov = data->cam3DS ? qDegreesToRadians(data->cam3DS->verticalFov(rw / rh)) : 1.0f;
    float tanHalfFovY = qTan(0.5f * fov * (rh / rw));
    float invFocalLenX = tanHalfFovY * (rw / rh);

    p->aoScreenConst = QVector4D(1.0f / R2,
                                 rh / (2.0f * tanHalfFovY),
                                 1.0f / rw,
                                 1.0f / rh);

    p->uvToEyeConst = QVector4D(2.0f * invFocalLenX,
                                -2.0f * tanHalfFovY,
                                -invFocalLenX,
                                tanHalfFovY);

    data->ssaoTextureData.aoDataBuf->setData(buf);
}

void Q3DSSceneManager::updateSsaoStatus(Q3DSLayerNode *layer3DS, bool *aoDidChange)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);

    const bool needsSsao = layer3DS->aoStrength() > 0.0f;
    const bool hasSsao = data->ssaoTextureData.enabled;

    if (aoDidChange)
        *aoDidChange = needsSsao != hasSsao;

    if (needsSsao == hasSsao) {
        if (hasSsao)
            updateAoParameters(layer3DS);
        return;
    }

    setSsaoTextureEnabled(layer3DS, needsSsao);
}

static const Qt3DRender::QAbstractTexture::CubeMapFace qt3ds_shadowCube_faceIds[6] = {
    Qt3DRender::QAbstractTexture::CubeMapPositiveX,
    Qt3DRender::QAbstractTexture::CubeMapNegativeX,
    Qt3DRender::QAbstractTexture::CubeMapPositiveY,
    Qt3DRender::QAbstractTexture::CubeMapNegativeY,
    Qt3DRender::QAbstractTexture::CubeMapPositiveZ,
    Qt3DRender::QAbstractTexture::CubeMapNegativeZ
};

static const QVector3D qt3ds_shadowCube_up[6] = {
    QVector3D(0, -1, 0),
    QVector3D(0, -1, 0),
    QVector3D(0, 0, 1),
    QVector3D(0, 0, -1),
    QVector3D(0, -1, 0),
    QVector3D(0, -1, 0)
};

static const QVector3D qt3ds_shadowCube_dir[6] = {
    QVector3D(1, 0, 0),
    QVector3D(-1, 0, 0),
    QVector3D(0, 1, 0),
    QVector3D(0, -1, 0),
    QVector3D(0, 0, 1),
    QVector3D(0, 0, -1)
};

void Q3DSSceneManager::updateCubeShadowMapParams(Q3DSLayerAttached::PerLightShadowMapData *d,
                                                 Q3DSLightNode *light3DS,
                                                 const QString &lightIndexStr)
{
    Q_ASSERT(light3DS->lightType() != Q3DSLightNode::Directional);
    Q3DSLightAttached *lightData = static_cast<Q3DSLightAttached *>(light3DS->attached());

    const QVector3D lightGlobalPos = lightData->globalTransform.column(3).toVector3D();
    // camera_properties comes from the actual camera, so will reuse the parameter used by normal passes
    // camera_position is for the light the viewpoint of which we are rendering from
    d->cameraPositionParam->setName(QLatin1String("camera_position"));
    d->cameraPositionParam->setValue(QVector3D(lightGlobalPos.x(), lightGlobalPos.y(), -lightGlobalPos.z())); // because the shader wants Z this way

    d->materialParams.shadowSampler->setName(QLatin1String("shadowcube") + lightIndexStr);
    d->materialParams.shadowSampler->setValue(QVariant::fromValue(d->shadowMapTexture));

    d->materialParams.shadowMatrixParam->setName(QLatin1String("shadowmap") + lightIndexStr + QLatin1String("_matrix"));
    d->materialParams.shadowMatrixParam->setValue(QVariant::fromValue(lightData->globalTransform.inverted()));

    d->materialParams.shadowControlParam->setName(QLatin1String("shadowmap") + lightIndexStr + QLatin1String("_control"));
    d->materialParams.shadowControlParam->setValue(QVariant::fromValue(QVector4D(light3DS->shadowBias(), light3DS->shadowFactor(), light3DS->shadowMapFar(), 0)));

    d->shadowCamPropsParam->setName(QLatin1String("camera_properties"));
    d->shadowCamPropsParam->setValue(QVector2D(light3DS->shadowFilter(), light3DS->shadowMapFar()));
}

void Q3DSSceneManager::updateCubeShadowCam(Q3DSLayerAttached::PerLightShadowMapData *d, int faceIdx, Q3DSLightNode *light3DS)
{
    Q_ASSERT(light3DS->lightType() != Q3DSLightNode::Directional);
    Q3DSLightAttached *lightData = static_cast<Q3DSLightAttached *>(light3DS->attached());
    Qt3DRender::QCamera *shadowCam = d->shadowCamProj[faceIdx];

    shadowCam->setProjectionType(Qt3DRender::QCameraLens::PerspectiveProjection);
    shadowCam->setFieldOfView(light3DS->shadowMapFov());
    shadowCam->setNearPlane(1.0f);
    shadowCam->setFarPlane(qMax(2.0f, light3DS->shadowMapFar()));

    const QVector3D lightGlobalPos = lightData->globalTransform.column(3).toVector3D();
    shadowCam->setPosition(lightGlobalPos);
    const QVector3D center(lightGlobalPos + qt3ds_shadowCube_dir[faceIdx]);
    shadowCam->setViewCenter(center);
    shadowCam->setUpVector(qt3ds_shadowCube_up[faceIdx]);
    shadowCam->setAspectRatio(1);
}

void Q3DSSceneManager::genCubeBlurPassFg(Q3DSLayerAttached::PerLightShadowMapData *d,
                                         Qt3DRender::QAbstractTexture *inTex,
                                         Qt3DRender::QAbstractTexture *outTex,
                                         const QString &passName,
                                         Q3DSLightNode *light3DS)
{
    Qt3DRender::QRenderTargetSelector *rtSelector = new Qt3DRender::QRenderTargetSelector(d->subTreeRoot);
    Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;
    m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject,
                               "Shadow cube blur RT for light %s", light3DS->id().constData());
    for (int faceIdx = 0; faceIdx < 6; ++faceIdx) {
        Qt3DRender::QRenderTargetOutput *rtOutput = new Qt3DRender::QRenderTargetOutput;
        rtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::AttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0 + faceIdx));
        rtOutput->setTexture(outTex);
        rtOutput->setFace(qt3ds_shadowCube_faceIds[faceIdx]);
        rt->addOutput(rtOutput);
    }
    rtSelector->setTarget(rt);

    Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport(rtSelector);
    viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

    // No Camera since the shaders do not care about view or projection.

    Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
    filterKey->setName(QLatin1String("pass"));
    filterKey->setValue(passName);

    Qt3DRender::QParameter *depthCubeParam = new Qt3DRender::QParameter(QLatin1String("depthCube"),
                                                                        QVariant::fromValue(inTex));

    Qt3DRender::QRenderPassFilter *filter = new Qt3DRender::QRenderPassFilter(viewport);
    filter->addMatch(filterKey);
    Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(filter);
    layerFilter->addLayer(m_fsQuadTag);

    filter->addParameter(depthCubeParam);
    filter->addParameter(d->shadowCamPropsParam);
}

void Q3DSSceneManager::updateOrthoShadowMapParams(Q3DSLayerAttached::PerLightShadowMapData *d,
                                                  Q3DSLightNode *light3DS,
                                                  const QString &lightIndexStr)
{
    Q_ASSERT(light3DS->lightType() == Q3DSLightNode::Directional);

    d->materialParams.shadowSampler->setName(QLatin1String("shadowmap") + lightIndexStr);
    d->materialParams.shadowSampler->setValue(QVariant::fromValue(d->shadowMapTexture));

    d->materialParams.shadowMatrixParam->setName(QLatin1String("shadowmap") + lightIndexStr + QLatin1String("_matrix"));
    // [-1, 1] -> [0, 1]
    const QMatrix4x4 bias(0.5f, 0.0f, 0.0f, 0.5f, // ctor takes row major
                          0.0f, 0.5f, 0.0f, 0.5f,
                          0.0f, 0.0f, 0.5f, 0.5f,
                          0.0f, 0.0f, 0.0f, 1.0f);
    const QMatrix4x4 lightVP = d->shadowCamOrtho->projectionMatrix() * d->shadowCamOrtho->viewMatrix();
    d->materialParams.shadowMatrixParam->setValue(QVariant::fromValue(bias * lightVP));

    d->materialParams.shadowControlParam->setName(QLatin1String("shadowmap") + lightIndexStr + QLatin1String("_control"));
    d->materialParams.shadowControlParam->setValue(QVariant::fromValue(QVector4D(light3DS->shadowBias(), light3DS->shadowFactor(), light3DS->shadowMapFar(), 0)));

    d->shadowCamPropsParam->setName(QLatin1String("camera_properties"));
    d->shadowCamPropsParam->setValue(QVector2D(light3DS->shadowFilter(), light3DS->shadowMapFar()));
}

void Q3DSSceneManager::updateOrthoShadowCam(Q3DSLayerAttached::PerLightShadowMapData *d, Q3DSLightNode *light3DS, Q3DSLayerAttached *layerData)
{
    Q_ASSERT(light3DS->lightType() == Q3DSLightNode::Directional);
    Q3DSLightAttached *lightData = static_cast<Q3DSLightAttached *>(light3DS->attached());

    d->shadowCamOrtho->setProjectionType(Qt3DRender::QCameraLens::OrthographicProjection);
    d->shadowCamOrtho->setFieldOfView(light3DS->shadowMapFov());
    d->shadowCamOrtho->setAspectRatio(1);

    // Pick a shadow camera position based on the real camera.

    // For example, if the default camera at 0,0,-600 is used,
    // then the shadow camera's position will be 0,0,N where N
    // is something based on the real camera's frustum.

    if (!layerData->cam3DS) // ok to do nothing assuming there will be another updateShadowMapStatus call once the camera is known
        return;

    Q3DSCameraAttached *sceneCamData = static_cast<Q3DSCameraAttached *>(layerData->cam3DS->attached());
    Qt3DRender::QCamera *sceneCamera = sceneCamData->camera;
    QVector3D camX = sceneCamData->globalTransform.column(0).toVector3D();
    QVector3D camY = sceneCamData->globalTransform.column(1).toVector3D();
    QVector3D camZ = sceneCamData->globalTransform.column(2).toVector3D();
    float tanFOV = qTan(qDegreesToRadians(sceneCamera->fieldOfView()) * 0.5f);
    float asTanFOV = tanFOV * sceneCamera->aspectRatio();
    QVector3D camEdges[4];
    camEdges[0] = -asTanFOV * camX + tanFOV * camY + camZ;
    camEdges[1] = asTanFOV * camX + tanFOV * camY + camZ;
    camEdges[2] = asTanFOV * camX - tanFOV * camY + camZ;
    camEdges[3] = -asTanFOV * camX - tanFOV * camY + camZ;

    for (int i = 0; i < 4; ++i) {
        camEdges[i].setX(-camEdges[i].x());
        camEdges[i].setY(-camEdges[i].y());
    }

    QVector3D camVerts[8];
    const QVector3D camLocalPos = layerData->cam3DS->position();
    camVerts[0] = camLocalPos + camEdges[0] * sceneCamera->nearPlane();
    camVerts[1] = camLocalPos + camEdges[0] * sceneCamera->farPlane();
    camVerts[2] = camLocalPos + camEdges[1] * sceneCamera->nearPlane();
    camVerts[3] = camLocalPos + camEdges[1] * sceneCamera->farPlane();
    camVerts[4] = camLocalPos + camEdges[2] * sceneCamera->nearPlane();
    camVerts[5] = camLocalPos + camEdges[2] * sceneCamera->farPlane();
    camVerts[6] = camLocalPos + camEdges[3] * sceneCamera->nearPlane();
    camVerts[7] = camLocalPos + camEdges[3] * sceneCamera->farPlane();
    QVector3D lightPos = camVerts[0];
    for (int i = 1; i < 8; ++i)
        lightPos += camVerts[i];
    lightPos *= 0.125f;

    const QVector3D lightDir = lightData->globalTransform.column(2).toVector3D().normalized();
    const QVector3D right = QVector3D::crossProduct(lightDir, QVector3D(0, 1, 0)).normalized();
    const QVector3D up = QVector3D::crossProduct(right, lightDir).normalized();

    // Calculate bounding box of the scene camera frustum
    float minDistanceZ = std::numeric_limits<float>::max();
    float maxDistanceZ = -std::numeric_limits<float>::max();
    float minDistanceY = std::numeric_limits<float>::max();
    float maxDistanceY = -std::numeric_limits<float>::max();
    float minDistanceX = std::numeric_limits<float>::max();
    float maxDistanceX = -std::numeric_limits<float>::max();
    for (int i = 0; i < 8; ++i) {
        float distanceZ = QVector3D::dotProduct(camVerts[i], lightDir);
        if (distanceZ < minDistanceZ)
            minDistanceZ = distanceZ;
        if (distanceZ > maxDistanceZ)
            maxDistanceZ = distanceZ;
        float distanceY = QVector3D::dotProduct(camVerts[i], up);
        if (distanceY < minDistanceY)
            minDistanceY = distanceY;
        if (distanceY > maxDistanceY)
            maxDistanceY = distanceY;
        float distanceX = QVector3D::dotProduct(camVerts[i], right);
        if (distanceX < minDistanceX)
            minDistanceX = distanceX;
        if (distanceX > maxDistanceX)
            maxDistanceX = distanceX;
    }

    float clipNear = -qFabs(maxDistanceZ - minDistanceZ) / 2;
    float clipFar = qFabs(maxDistanceZ - minDistanceZ) / 2;

    d->shadowCamOrtho->setNearPlane(clipNear);
    d->shadowCamOrtho->setFarPlane(clipFar);

    // The shadow camera's projection is (more or less?) an ordinary orthographic projection.
    float deltaZ = clipFar - clipNear;
    float halfWidth = qFabs(maxDistanceX - minDistanceX) / 2;
    float halfHeight = qFabs(maxDistanceY - minDistanceY) / 2;
    if (deltaZ != 0) {
        QMatrix4x4 proj;
        float *writePtr = proj.data();
        writePtr[0] = 1.0f / halfWidth;
        writePtr[5] = 1.0f / halfHeight;
        writePtr[10] = -2.0f / deltaZ;
        writePtr[11] = 0.0f;
        writePtr[14] = -(clipNear + clipFar) / deltaZ;
        writePtr[15] = 1.0f;

        d->shadowCamOrtho->setProjectionMatrix(proj);
    }

    // Shadow camera's view matrix.
    lightPos.setZ(-lightPos.z()); // invert, who knows why (Left vs. Right handed mess in 3DS)
    d->shadowCamOrtho->setPosition(lightPos);
    d->shadowCamOrtho->setViewCenter(lightPos - lightDir); // ditto
    d->shadowCamOrtho->setUpVector(QVector3D(0, 1, 0)); // no roll needed
}

void Q3DSSceneManager::genOrthoBlurPassFg(Q3DSLayerAttached::PerLightShadowMapData *d, Qt3DRender::QAbstractTexture *inTex,
                                          Qt3DRender::QAbstractTexture *outTex, const QString &passName, Q3DSLightNode *light3DS)
{
    Qt3DRender::QRenderTargetSelector *rtSelector = new Qt3DRender::QRenderTargetSelector(d->subTreeRoot);
    Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;
    m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject,
                               "Shadow ortho blur RT for light %s", light3DS->id().constData());
    Qt3DRender::QRenderTargetOutput *rtOutput = new Qt3DRender::QRenderTargetOutput;
    rtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
    rtOutput->setTexture(outTex);
    rt->addOutput(rtOutput);
    rtSelector->setTarget(rt);

    Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport(rtSelector);
    viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

    // No Camera since the shaders do not care about view or projection.

    Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
    filterKey->setName(QLatin1String("pass"));
    filterKey->setValue(passName);

    Qt3DRender::QParameter *texParam = new Qt3DRender::QParameter(QLatin1String("depthSrc"),
                                                                  QVariant::fromValue(inTex));

    Qt3DRender::QRenderPassFilter *filter = new Qt3DRender::QRenderPassFilter(viewport);
    filter->addMatch(filterKey);
    Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(filter);
    layerFilter->addLayer(m_fsQuadTag);

    filter->addParameter(texParam);
    filter->addParameter(d->shadowCamPropsParam);
}

void Q3DSSceneManager::updateShadowMapStatus(Q3DSLayerNode *layer3DS, bool *smDidChange)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(layerData);
    const int oldShadowCasterCount = layerData->shadowMapData.shadowCasters.count();
    int lightIdx = 0;
    int orthoCasterIdx = 0;
    int cubeCasterIdx = 0;
    QVariantList custMatCubeShadowMaps;
    QVariantList custMatOrthoShadowMaps;

    for (Q3DSLayerAttached::PerLightShadowMapData &d : layerData->shadowMapData.shadowCasters)
        d.active = false;

    // Go through the list of visible (eyeball==true) lights and pick the ones with castshadow==true.
    for (Q3DSLightNode *light3DS : qAsConst(layerData->lightsData->lightNodes)) {
        Q_ASSERT(light3DS->flags().testFlag(Q3DSNode::Active));
        // Note the global indexing for shadow map uniforms too: a casting, a
        // noncasting, and another shadow casting point light leads to uniforms
        // like shadowcube1 and shadowcube3. (with the default material)
        const QString lightIndexStr = QString::number(lightIdx++);
        // On the other hand custom materials need a shadowIdx to index a
        // shadowMaps or shadowCubes sampler uniform array. Hence ortho/cubeCasterIdx.

        if (light3DS->castShadow()) {
            auto it = std::find_if(layerData->shadowMapData.shadowCasters.begin(), layerData->shadowMapData.shadowCasters.end(),
                                   [light3DS](const Q3DSLayerAttached::PerLightShadowMapData &d) { return d.lightNode == light3DS; });
            Q3DSLayerAttached::PerLightShadowMapData *d;
            if (it != layerData->shadowMapData.shadowCasters.end()) {
                d = it;
            } else {
                layerData->shadowMapData.shadowCasters.append(Q3DSLayerAttached::PerLightShadowMapData());
                d = &layerData->shadowMapData.shadowCasters.last();
                d->lightNode = light3DS;
            }
            d->active = true;

            const qint32 size = 1 << light3DS->shadowMapRes();
            bool needsNewTextures = false;
            if (d->shadowDS) {
                const QSize currentSize(d->shadowDS->width(), d->shadowDS->height());
                if (currentSize != QSize(size, size))
                    needsNewTextures = true;
            }
            if (d->shadowMapTexture) {
                const QSize currentSize(d->shadowMapTexture->width(), d->shadowMapTexture->height());
                if (currentSize != QSize(size, size))
                    needsNewTextures = true;
            }
            if (needsNewTextures) {
                qCDebug(lcPerf, "Slow path! Recreating shadow map textures for light %s", light3DS->id().constData());
                d->shadowDS = nullptr;
                d->shadowMapTexture = nullptr;
                // Regenerate the whole framegraph. A change in shadow map resolution
                // is not something that should happen frequently (or at all).
                delete d->subTreeRoot;
                d->subTreeRoot = nullptr;
            }

            // Framegraph sub-tree root
            bool needsFramegraph = false;
            if (!d->subTreeRoot) {
                d->subTreeRoot = new Qt3DRender::QFrameGraphNode(layerData->shadowMapData.shadowRoot);
                needsFramegraph = true;
            }

            Qt3DCore::QNode *texParent = d->subTreeRoot;
            const QByteArray &layerId = layer3DS->id();
            if (!d->shadowDS) {
                auto createDepthStencil = [size, layerId, this]() {
                    Qt3DRender::QTexture2D *dsTexOrRb = new Qt3DRender::QTexture2D;
                    m_profiler->trackNewObject(dsTexOrRb, Q3DSProfiler::Texture2DObject, layerId, "Shadow map depth");
                    dsTexOrRb->setFormat(Qt3DRender::QAbstractTexture::D16);
                    dsTexOrRb->setWidth(size);
                    dsTexOrRb->setHeight(size);
                    dsTexOrRb->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
                    dsTexOrRb->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
                    return dsTexOrRb;
                };

                // Try to optimize by reusing the same depth-stencil buffer for
                // all lights in the default case where they all have the same
                // shadow map resolution value.
                if (layerData->shadowMapData.defaultShadowDS) {
                    const QSize availSize = QSize(layerData->shadowMapData.defaultShadowDS->width(),
                                                  layerData->shadowMapData.defaultShadowDS->height());
                    if (availSize == QSize(size, size)) {
                        d->shadowDS = layerData->shadowMapData.defaultShadowDS;
                    } else {
                        d->shadowDS = createDepthStencil();
                        // owned by this framegraph subtree
                        d->shadowDS->setParent(texParent);
                    }
                } else {
                    layerData->shadowMapData.defaultShadowDS = createDepthStencil();
                    // parent it so that it outlives this framegraph subtree
                    layerData->shadowMapData.defaultShadowDS->setParent(layerData->entity);
                    d->shadowDS = layerData->shadowMapData.defaultShadowDS;
                }
            }

            Q_ASSERT(d->lightNode == light3DS);
            const bool isCube = light3DS->lightType() != Q3DSLightNode::Directional;

            if (!d->shadowMapTexture) {
                if (isCube) {
                    d->shadowMapTexture = new Qt3DRender::QTextureCubeMap(texParent);
                    m_profiler->trackNewObject(d->shadowMapTexture, Q3DSProfiler::TextureCubeObject, light3DS->id(),
                                               "Shadow map for light %s", light3DS->id().constData());
                    d->shadowMapTextureTemp = new Qt3DRender::QTextureCubeMap(texParent);
                    m_profiler->trackNewObject(d->shadowMapTexture, Q3DSProfiler::TextureCubeObject, light3DS->id(),
                                               "Shadow map temp buffer for light %s", light3DS->id().constData());
                } else {
                    d->shadowMapTexture = new Qt3DRender::QTexture2D(texParent);
                    m_profiler->trackNewObject(d->shadowMapTexture, Q3DSProfiler::Texture2DObject, light3DS->id(),
                                               "Shadow map for light %s", light3DS->id().constData());
                    d->shadowMapTextureTemp = new Qt3DRender::QTexture2D(texParent);
                    m_profiler->trackNewObject(d->shadowMapTexture, Q3DSProfiler::Texture2DObject, light3DS->id(),
                                               "Shadow map temp buffer for light %s", light3DS->id().constData());
                }

                Qt3DRender::QAbstractTexture::TextureFormat format = Qt3DRender::QAbstractTexture::R16_UNorm;
                // GL_R16 does not seem to exist in OpenGL ES unless GL_EXT_texture_norm16
                // is present.  Fall back to the GL_R8 when not supported (but this leads
                // to uglier output with more artifacts).
                if (!m_gfxLimits.norm16TexturesSupported)
                    format = Qt3DRender::QAbstractTexture::R8_UNorm;

                d->shadowMapTexture->setFormat(format);
                d->shadowMapTextureTemp->setFormat(format);

                d->shadowMapTexture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
                d->shadowMapTextureTemp->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
                d->shadowMapTexture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
                d->shadowMapTextureTemp->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);

                qCDebug(lcScene, "Shadow cube map size for light %s is %d", light3DS->id().constData(), size);
                // do not add to layerData->sizeManagedTextures since the shadow map size is fixed
                d->shadowMapTexture->setSize(size, size, 1);
                d->shadowMapTextureTemp->setSize(size, size, 1);
            }

            // now the framegraph subtree
            if (needsFramegraph) {
                qCDebug(lcScene, "Generating framegraph for shadow casting light %s", light3DS->id().constData());
                d->shadowCamPropsParam = new Qt3DRender::QParameter;

                // These parameters will be referenced by the material which
                // means they must persist even if this framegraph subtree gets
                // recreated due to a texture change later on. Thus cannot be
                // parented to this part of the fg.
                if (!d->materialParams.shadowSampler)
                    d->materialParams.shadowSampler = new Qt3DRender::QParameter(layerData->entity);
                if (!d->materialParams.shadowMatrixParam)
                    d->materialParams.shadowMatrixParam = new Qt3DRender::QParameter(layerData->entity);
                if (!d->materialParams.shadowControlParam)
                    d->materialParams.shadowControlParam = new Qt3DRender::QParameter(layerData->entity);

                // for custom materials
                if (!layerData->shadowMapData.custMatParams.numShadowCubesParam) {
                    layerData->shadowMapData.custMatParams.numShadowCubesParam = new Qt3DRender::QParameter(layerData->entity);
                    layerData->shadowMapData.custMatParams.numShadowCubesParam->setName(QLatin1String("uNumShadowCubes"));
                }
                if (!layerData->shadowMapData.custMatParams.numShadowMapsParam) {
                    layerData->shadowMapData.custMatParams.numShadowMapsParam = new Qt3DRender::QParameter(layerData->entity);
                    layerData->shadowMapData.custMatParams.numShadowMapsParam->setName(QLatin1String("uNumShadowMaps"));
                }
                if (!layerData->shadowMapData.custMatParams.shadowMapSamplersParam) {
                    layerData->shadowMapData.custMatParams.shadowMapSamplersParam = new Qt3DRender::QParameter(layerData->entity);
                    layerData->shadowMapData.custMatParams.shadowMapSamplersParam->setName(QLatin1String("shadowMaps[0]")); // will pass all array elems as one param
                }
                if (!layerData->shadowMapData.custMatParams.shadowCubeSamplersParam) {
                    layerData->shadowMapData.custMatParams.shadowCubeSamplersParam = new Qt3DRender::QParameter(layerData->entity);
                    layerData->shadowMapData.custMatParams.shadowCubeSamplersParam->setName(QLatin1String("shadowCubes[0]")); // will pass all array elems as one param
                }

                // verify no globally used parameters get parented to this volatile framegraph subtree
                Q_ASSERT(layerData->eyeMono->opaqueTag->parent());
                Q_ASSERT(layerData->eyeMono->transparentTag->parent());
                Q_ASSERT(layerData->eyeLeft->opaqueTag->parent());
                Q_ASSERT(layerData->eyeLeft->transparentTag->parent());
                Q_ASSERT(layerData->eyeRight->opaqueTag->parent());
                Q_ASSERT(layerData->eyeRight->transparentTag->parent());
                Q_ASSERT(layerData->cameraPropertiesParam->parent());
                Q_ASSERT(m_fsQuadTag->parent());

                if (isCube) {
                    d->cameraPositionParam = new Qt3DRender::QParameter;

                    // we do not use geometry shaders for some reason, so run a separate pass for each cubemap face instead
                    for (int faceIdx = 0; faceIdx < 6; ++faceIdx) {
                        Qt3DRender::QRenderTargetSelector *shadowRtSelector = new Qt3DRender::QRenderTargetSelector(d->subTreeRoot);
                        Qt3DRender::QRenderTarget *shadowRt = new Qt3DRender::QRenderTarget;
                        m_profiler->trackNewObject(shadowRt, Q3DSProfiler::RenderTargetObject, light3DS->id(),
                                                   "Shadow cube RT for light %s face %d", light3DS->id().constData(), faceIdx);
                        Qt3DRender::QRenderTargetOutput *shadowRtOutput = new Qt3DRender::QRenderTargetOutput;
                        shadowRtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
                        shadowRtOutput->setTexture(d->shadowMapTexture);
                        shadowRtOutput->setFace(qt3ds_shadowCube_faceIds[faceIdx]);
                        shadowRt->addOutput(shadowRtOutput);

                        shadowRtOutput = new Qt3DRender::QRenderTargetOutput;
                        shadowRtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Depth);
                        shadowRtOutput->setTexture(d->shadowDS);
                        shadowRt->addOutput(shadowRtOutput);

                        shadowRtSelector->setTarget(shadowRt);

                        // must have a viewport in order to let the renderer pick up the correct output dimensions and reset the viewport state
                        Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport(shadowRtSelector);
                        viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

                        Qt3DRender::QCameraSelector *camSel = new Qt3DRender::QCameraSelector(viewport);
                        d->shadowCamProj[faceIdx] = new Qt3DRender::QCamera;
                        updateCubeShadowCam(d, faceIdx, light3DS);
                        camSel->setCamera(d->shadowCamProj[faceIdx]);

                        Qt3DRender::QClearBuffers *clearBuffers = new Qt3DRender::QClearBuffers(camSel);
                        clearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorDepthStencilBuffer);
                        clearBuffers->setClearColor(Qt::white);
                        new Qt3DRender::QNoDraw(clearBuffers);

                        Qt3DRender::QFilterKey *shadowFilterKey = new Qt3DRender::QFilterKey;
                        shadowFilterKey->setName(QLatin1String("pass"));
                        shadowFilterKey->setValue(QLatin1String("shadowCube"));

                        Qt3DRender::QRenderPassFilter *shadowFilter = new Qt3DRender::QRenderPassFilter(camSel);
                        shadowFilter->addMatch(shadowFilterKey);
                        Qt3DRender::QSortPolicy *sortPolicyOpaque = opaquePassSortPolicy(shadowFilter);
                        Qt3DRender::QLayerFilter *layerFilterOpaque = new Qt3DRender::QLayerFilter(sortPolicyOpaque);
                        layerFilterOpaque->addLayer(layerData->eyeMono->opaqueTag);
                        layerFilterOpaque->addLayer(layerData->eyeLeft->opaqueTag);
                        layerFilterOpaque->addLayer(layerData->eyeRight->opaqueTag);
                        shadowFilter->addParameter(d->cameraPositionParam);
                        shadowFilter->addParameter(layerData->cameraPropertiesParam);

                        shadowFilter = new Qt3DRender::QRenderPassFilter(camSel);
                        shadowFilter->addMatch(shadowFilterKey);
                        Qt3DRender::QSortPolicy *sortPolicyTransparent = transparentPassSortPolicy(shadowFilter);
                        Qt3DRender::QLayerFilter *layerFilterTransparent = new Qt3DRender::QLayerFilter(sortPolicyTransparent);
                        layerFilterTransparent->addLayer(layerData->eyeMono->transparentTag);
                        layerFilterTransparent->addLayer(layerData->eyeLeft->transparentTag);
                        layerFilterTransparent->addLayer(layerData->eyeRight->transparentTag);
                        shadowFilter->addParameter(d->cameraPositionParam);
                        shadowFilter->addParameter(layerData->cameraPropertiesParam);
                    }
                    // Now two blur passes that output to the final texture, play ping pong.
                    if (m_gfxLimits.maxDrawBuffers >= 6) { // ###
                        // Draws a fullscreen quad into the 6 faces of the cubemap texture (COLOR0..5), with the other texture as input.
                        genCubeBlurPassFg(d, d->shadowMapTexture, d->shadowMapTextureTemp,
                                          QLatin1String("shadowCubeBlurX"), light3DS);
                        genCubeBlurPassFg(d, d->shadowMapTextureTemp, d->shadowMapTexture,
                                          QLatin1String("shadowCubeBlurY"), light3DS);
                    }

                    // set QParameter names and values
                    updateCubeShadowMapParams(d, light3DS, lightIndexStr);
                    custMatCubeShadowMaps.append(QVariant::fromValue(d->shadowMapTexture));
                } else {
                    Qt3DRender::QRenderTargetSelector *shadowRtSelector = new Qt3DRender::QRenderTargetSelector(d->subTreeRoot);
                    Qt3DRender::QRenderTarget *shadowRt = new Qt3DRender::QRenderTarget;
                    m_profiler->trackNewObject(shadowRt, Q3DSProfiler::RenderTargetObject, light3DS->id(),
                                               "Shadow ortho RT for light %s", light3DS->id().constData());
                    Qt3DRender::QRenderTargetOutput *shadowRtOutput = new Qt3DRender::QRenderTargetOutput;
                    shadowRtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
                    shadowRtOutput->setTexture(d->shadowMapTexture);
                    shadowRt->addOutput(shadowRtOutput);

                    shadowRtOutput = new Qt3DRender::QRenderTargetOutput;
                    shadowRtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Depth);
                    shadowRtOutput->setTexture(d->shadowDS);
                    shadowRt->addOutput(shadowRtOutput);

                    shadowRtSelector->setTarget(shadowRt);

                    Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport(shadowRtSelector);
                    viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

                    Qt3DRender::QCameraSelector *camSel = new Qt3DRender::QCameraSelector(viewport);
                    d->shadowCamOrtho = new Qt3DRender::QCamera;
                    updateOrthoShadowCam(d, light3DS, layerData);
                    camSel->setCamera(d->shadowCamOrtho);

                    Qt3DRender::QClearBuffers *clearBuffers = new Qt3DRender::QClearBuffers(camSel);
                    clearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorDepthStencilBuffer);
                    clearBuffers->setClearColor(Qt::white);
                    new Qt3DRender::QNoDraw(clearBuffers);

                    Qt3DRender::QFilterKey *shadowFilterKey = new Qt3DRender::QFilterKey;
                    shadowFilterKey->setName(QLatin1String("pass"));
                    shadowFilterKey->setValue(QLatin1String("shadowOrtho"));

                    Qt3DRender::QRenderPassFilter *shadowFilter = new Qt3DRender::QRenderPassFilter(camSel);
                    shadowFilter->addMatch(shadowFilterKey);
                    Qt3DRender::QSortPolicy *sortPolicyOpaque = opaquePassSortPolicy(shadowFilter);
                    Qt3DRender::QLayerFilter *layerFilterOpaque = new Qt3DRender::QLayerFilter(sortPolicyOpaque);
                    layerFilterOpaque->addLayer(layerData->eyeMono->opaqueTag);
                    layerFilterOpaque->addLayer(layerData->eyeLeft->opaqueTag);
                    layerFilterOpaque->addLayer(layerData->eyeRight->opaqueTag);

                    shadowFilter = new Qt3DRender::QRenderPassFilter(camSel);
                    shadowFilter->addMatch(shadowFilterKey);
                    Qt3DRender::QSortPolicy *sortPolicyTransparent = transparentPassSortPolicy(shadowFilter);
                    Qt3DRender::QLayerFilter *layerFilterTransparent = new Qt3DRender::QLayerFilter(sortPolicyTransparent);
                    layerFilterTransparent->addLayer(layerData->eyeMono->transparentTag);
                    layerFilterTransparent->addLayer(layerData->eyeLeft->transparentTag);
                    layerFilterTransparent->addLayer(layerData->eyeRight->transparentTag);

                    // 2 blur passes
                    genOrthoBlurPassFg(d, d->shadowMapTexture, d->shadowMapTextureTemp, QLatin1String("shadowOrthoBlurX"), light3DS);
                    genOrthoBlurPassFg(d, d->shadowMapTextureTemp, d->shadowMapTexture, QLatin1String("shadowOrthoBlurY"), light3DS);
                    // set QParameter names and values
                    updateOrthoShadowMapParams(d, light3DS, lightIndexStr);
                    custMatOrthoShadowMaps.append(QVariant::fromValue(d->shadowMapTexture));
                } // if isCube
            } else {
                // !needsFramegraph -> update the values that could have changed
                if (isCube) {
                    for (int faceIdx = 0; faceIdx < 6; ++faceIdx)
                        updateCubeShadowCam(d, faceIdx, light3DS);

                    updateCubeShadowMapParams(d, light3DS, lightIndexStr);
                    custMatCubeShadowMaps.append(QVariant::fromValue(d->shadowMapTexture));
                } else {
                    updateOrthoShadowCam(d, light3DS, layerData);
                    updateOrthoShadowMapParams(d, light3DS, lightIndexStr);
                    custMatOrthoShadowMaps.append(QVariant::fromValue(d->shadowMapTexture));
                }
            }

            if (isCube) {
                light3DS->attached<Q3DSLightAttached>()->lightSource.shadowIdxParam->setValue(cubeCasterIdx);
                ++cubeCasterIdx;
                Q_ASSERT(custMatCubeShadowMaps.count() == cubeCasterIdx);
            } else {
                light3DS->attached<Q3DSLightAttached>()->lightSource.shadowIdxParam->setValue(orthoCasterIdx);
                ++orthoCasterIdx;
                Q_ASSERT(custMatOrthoShadowMaps.count() == orthoCasterIdx);
            }
        } else {
            // non-shadow-casting light
            light3DS->attached<Q3DSLightAttached>()->lightSource.shadowIdxParam->setValue(-1);
        }
    }

    if (layerData->shadowMapData.custMatParams.numShadowCubesParam)
        layerData->shadowMapData.custMatParams.numShadowCubesParam->setValue(cubeCasterIdx);
    if (layerData->shadowMapData.custMatParams.numShadowMapsParam)
        layerData->shadowMapData.custMatParams.numShadowMapsParam->setValue(orthoCasterIdx);
    if (layerData->shadowMapData.custMatParams.shadowMapSamplersParam)
        layerData->shadowMapData.custMatParams.shadowMapSamplersParam->setValue(custMatOrthoShadowMaps);
    if (layerData->shadowMapData.custMatParams.shadowCubeSamplersParam)
        layerData->shadowMapData.custMatParams.shadowCubeSamplersParam->setValue(custMatCubeShadowMaps);

    // Drop shadow map data for lights that are not casting anymore either due
    // to a castshadow or eyeball property change.
    for (int i = 0; i < layerData->shadowMapData.shadowCasters.count(); ++i) {
        auto &sc = layerData->shadowMapData.shadowCasters[i];
        if (!sc.active) {
            qCDebug(lcScene, "Shadow casting light %s is gone", sc.lightNode->id().constData());
            delete sc.subTreeRoot; // bye bye framegraph and shadow map textures
            layerData->shadowMapData.shadowCasters.remove(i--);
        }
    }

    const int newShadowCasterCount = layerData->shadowMapData.shadowCasters.count();
    if (smDidChange)
        *smDidChange = newShadowCasterCount != oldShadowCasterCount;

    if (newShadowCasterCount != oldShadowCasterCount)
        qCDebug(lcPerf, "Layer %s has %d shadow casting lights", layer3DS->id().constData(), layerData->shadowMapData.shadowCasters.count());
}

static Qt3DRender::QRenderTargetSelector *createProgressiveTemporalAAFramegraph(Qt3DCore::QNode *parent,
                                                                                Qt3DRender::QRenderTarget *rt,
                                                                                Qt3DRender::QLayer *tag,
                                                                                Qt3DRender::QLayerFilter **layerFilter,
                                                                                Qt3DRender::QParameter **accumTexParam,
                                                                                Qt3DRender::QParameter **lastTexParam,
                                                                                Qt3DRender::QParameter **blendFactorsParam)
{
    Qt3DRender::QRenderTargetSelector *rtSel = new Qt3DRender::QRenderTargetSelector(parent);
    rtSel->setTarget(rt);

    Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport(rtSel);
    viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

    Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
    filterKey->setName(QLatin1String("pass"));
    filterKey->setValue(QLatin1String("progaa"));
    Qt3DRender::QRenderPassFilter *filter = new Qt3DRender::QRenderPassFilter(viewport);
    filter->addMatch(filterKey);

    *layerFilter = new Qt3DRender::QLayerFilter(filter);
    (*layerFilter)->addLayer(tag);

    *accumTexParam = new Qt3DRender::QParameter;
    (*accumTexParam)->setName(QLatin1String("accumulator"));
    *lastTexParam = new Qt3DRender::QParameter;
    (*lastTexParam)->setName(QLatin1String("last_frame"));
    *blendFactorsParam = new Qt3DRender::QParameter;
    (*blendFactorsParam)->setName(QLatin1String("blend_factors"));

    filter->addParameter(*accumTexParam);
    filter->addParameter(*lastTexParam);
    filter->addParameter(*blendFactorsParam);

    return rtSel;
}

static QVector2D adjustedProgressiveTemporalAAVertexOffset(const QVector2D &vertexOffset, Q3DSLayerAttached *data)
{
    const QSize layerPixelSize = safeLayerPixelSize(data);
    const bool leftHanded = data->cam3DS->orientation() == Q3DSNode::LeftHanded;
    const float lhFactor = leftHanded ? -1.0f : 1.0f;
    const float camZ = data->cam3DS->position().z() * lhFactor;
    return QVector2D(vertexOffset.x() / (layerPixelSize.width() / 2.0f) * camZ,
                     vertexOffset.y() / (layerPixelSize.height() / 2.0f) * camZ);
}

void Q3DSSceneManager::stealLayerRenderTarget(Qt3DRender::QAbstractTexture **stolenColorBuf, Q3DSLayerNode *layer3DS, Q3DSEyeData *eyeData)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    if (*stolenColorBuf) {
        // the previous stolen color buffer it not needed anymore
        data->sizeManagedTextures.removeOne(*stolenColorBuf);
        delete *stolenColorBuf;
    }
    *stolenColorBuf = data->effectActive ? eyeData->effLayerTexture : eyeData->layerTexture;
    // create a whole new render target for the layer
    data->sizeManagedTextures.removeOne(*stolenColorBuf);
    const QSize layerPixelSize = safeLayerPixelSize(data);
    const int msaaSampleCount = 0;
    Qt3DRender::QAbstractTexture *colorTex;
    Qt3DRender::QAbstractTexture *dsTexOrRb;
    Qt3DRender::QRenderTarget *rt = newLayerRenderTarget(layerPixelSize, msaaSampleCount,
                                                         &colorTex, &dsTexOrRb,
                                                         data->layerFgRoot,
                                                         layer3DS,
                                                         eyeData->layerDS); // keep using the existing depth-stencil buffer
    Qt3DRender::QRenderTarget *oldRt = eyeData->rtSelector->target();
    eyeData->rtSelector->setTarget(rt);
    delete oldRt;
    if (data->effectActive) {
        data->sizeManagedTextures.append(colorTex);
        eyeData->effLayerTexture = colorTex;
    } else {
        data->sizeManagedTextures.insert(0, colorTex);
        eyeData->layerTexture = colorTex;
    }

    // update descriptions for profiler
    m_profiler->updateObjectInfo(*stolenColorBuf, Q3DSProfiler::Texture2DObject,
                                 "PAA/TAA color buffer for layer %s", layer3DS->id().constData());
}

Qt3DRender::QAbstractTexture *Q3DSSceneManager::createProgressiveTemporalAAExtraBuffer(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Qt3DRender::QAbstractTexture *tex = new Qt3DRender::QTexture2D(data->layerFgRoot);
    m_profiler->trackNewObject(tex, Q3DSProfiler::Texture2DObject, layer3DS->id(),
                               "PAA/TAA work buffer for layer %s", layer3DS->id().constData());
    tex->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
    tex->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
    tex->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
    prepareSizeDependentTexture(tex, layer3DS);
    return tex;
}

//#define PAA_ALWAYS_ON

static const int MAX_AA_LEVELS = 8;

// Called once per eye (mono, left, right) for each progressive AA enabled layer.
bool Q3DSSceneManager::updateEyeProgressiveAA(Q3DSLayerNode *layer3DS, Q3DSLayerAttached *data, Q3DSEyeData *eyeData)
{
    // When a frame applies an offset to the camera's matrix, the next frame
    // must reset it. This must happen regardless of having PAA active in the
    // next frame.
    if (eyeData->progAA.cameraAltered) {
        eyeData->progAA.cameraAltered = false;
        Qt3DRender::QCamera *camera = static_cast<Qt3DRender::QCamera *>(eyeData->cameraSelector->camera());
        setSingleCameraSizeProperties(data, camera);
    }

    if (data->layerSize.isEmpty())
        return false;

    // Progressive AA kicks in only when "movement has stopped", or rather,
    // when no properties have changed, meaning the frame was not dirty. Reset
    // the pass index otherwise.
#ifndef PAA_ALWAYS_ON
    if (data->wasDirty)
        eyeData->progAA.pass = 0;
#endif

    // Do not start accumulating before at least 2 non-dirty frames. This is
    // not what 3DS1 does (there there's no delay) but our dirty flags do not
    // work the same way, apparently (or could be anim fw that causes the
    // difference in some test scenes, not sure).
    const int PROGAA_FRAME_DELAY = 1;

    int maxPass = 0;
    switch (layer3DS->progressiveAA()) {
    case Q3DSLayerNode::PAA2x:
        maxPass = 2 + PROGAA_FRAME_DELAY;
        break;
    case Q3DSLayerNode::PAA4x:
        maxPass = 4 + PROGAA_FRAME_DELAY;
        break;
    case Q3DSLayerNode::PAA8x:
        maxPass = 8 + PROGAA_FRAME_DELAY;
        break;
    default:
        Q_UNREACHABLE();
        break;
    }

    if (eyeData->progAA.pass > maxPass) {
        // State is Idle. Keep displaying the output in currentOutputTexture until
        // wasDirty becomes true and so pass gets reset.
        if (eyeData->progAA.layerFilter->layers().contains(m_fsQuadTag))
            eyeData->progAA.layerFilter->removeLayer(m_fsQuadTag);
#ifdef PAA_ALWAYS_ON
        eyeData->progAA.pass = 0;
#endif
        return true;
    }

    if (eyeData->progAA.pass < 1 + PROGAA_FRAME_DELAY) {
        // State is Inactive. Must make sure no progAA output is shown.
        ++eyeData->progAA.pass;
        if (eyeData->progAA.enabled) {
            qCDebug(lcScene, "Stopping progressive AA for layer %s", layer3DS->id().constData());
            eyeData->progAA.enabled = false;
            eyeData->compositorSourceParam->setValue(QVariant::fromValue(data->effectActive ? eyeData->effLayerTexture : eyeData->layerTexture));
            // Do not delete and then recreate the framegraph subtree since
            // that is likely way too expensive. Keep it around instead and
            // disable it by making sure it has no renderable entities. This
            // could have already been done in the > maxPass branch above but
            // won't hurt to repeat since we may get a dirty frame before
            // reaching the maximum accumulation level.
            eyeData->progAA.layerFilter->removeLayer(m_fsQuadTag);
        }
        return false;
    }

    // State is Active.

    static QVector2D vertexOffsets[MAX_AA_LEVELS] = {
        QVector2D(-0.170840f, -0.553840f), // 1x
        QVector2D(0.162960f, -0.319340f),  // 2x
        QVector2D(0.360260f, -0.245840f),  // 3x
        QVector2D(-0.561340f, -0.149540f), // 4x
        QVector2D(0.249460f, 0.453460f),   // 5x
        QVector2D(-0.336340f, 0.378260f),  // 6x
        QVector2D(0.340000f, 0.166260f),   // 7x
        QVector2D(0.235760f, 0.527760f),   // 8x
    };
    // (frame blend factor, accumulator blend factor)
    static QVector2D blendFactors[MAX_AA_LEVELS] = {
        QVector2D(0.500000f, 0.500000f), // 1x
        QVector2D(0.333333f, 0.666667f), // 2x
        QVector2D(0.250000f, 0.750000f), // 3x
        QVector2D(0.200000f, 0.800000f), // 4x
        QVector2D(0.166667f, 0.833333f), // 5x
        QVector2D(0.142857f, 0.857143f), // 6x
        QVector2D(0.125000f, 0.875000f), // 7x
        QVector2D(0.111111f, 0.888889f), // 8x
    };

    const int factorsIdx = eyeData->progAA.pass - (1 + PROGAA_FRAME_DELAY);
    const QVector2D vertexOffset = adjustedProgressiveTemporalAAVertexOffset(vertexOffsets[factorsIdx], data);
    const QVector2D blendFactor = blendFactors[factorsIdx];

    if (!eyeData->progAA.enabled && eyeData->progAA.fg && eyeData->progAA.layerFilter)
        eyeData->progAA.layerFilter->addLayer(m_fsQuadTag);

    eyeData->progAA.enabled = true;
    if (factorsIdx == 0)
        qCDebug(lcPerf, "Kicking off progressive AA for layer %s", layer3DS->id().constData());

    // Alter the camera's matrix by a little movement based on the current
    // vertexOffset. This applies to the camera used by the main layer passes.
    Qt3DRender::QCamera *camera = static_cast<Qt3DRender::QCamera *>(eyeData->cameraSelector->camera());
    setSingleCameraSizeProperties(data, camera, vertexOffset);
    eyeData->progAA.cameraAltered = true;

    // data->layerTexture is the original contents (albeit with jiggled
    // camera), generated by the main layer passes. Have two additional
    // textures, and swap them every frame (the one that was used as input will
    // be used as output in the next frame). The layer compositor will be
    // switched over to use always the one that is the (blended) output.

    if (!eyeData->progAA.extraColorBuf)
        eyeData->progAA.extraColorBuf = createProgressiveTemporalAAExtraBuffer(layer3DS);

    // ### depth, ssao, shadow passes in the main layer framegraph subtree should be disabled when pass > 0

    // For the other buffer there is no new texture needed - instead,
    // steal data->(eff)layerTexture. (note: already in sizeManagedTextures)
    if (factorsIdx == 0) {
        stealLayerRenderTarget(&eyeData->progAA.stolenColorBuf, layer3DS, eyeData);
        // start with the existing color buffer as the accumulator
        eyeData->progAA.currentAccumulatorTexture = eyeData->progAA.stolenColorBuf;
        eyeData->progAA.currentOutputTexture = eyeData->progAA.extraColorBuf;
    }

    // ### have to do this on every new PAA run since accumulatorTexture changes above.
    // It is an overkill though since the framegraph could be generated just once.
    if (factorsIdx == 0) {
        delete eyeData->progAA.fg;

        // set up a framegraph subtree to render a quad

        // Due to QTBUG-64757 we will need to switch QRenderTargets, not just
        // the texture in QRenderTargetOutput. Hence the need for multiple
        // ones. This is probably more efficient anyways (since it results in
        // binding a different FBO, without altering attachments).

        eyeData->progAA.curTarget = 0;
        for (Qt3DRender::QAbstractTexture *t : { eyeData->progAA.currentOutputTexture, eyeData->progAA.currentAccumulatorTexture }) {
            Qt3DRender::QRenderTargetOutput *rtOutput = new Qt3DRender::QRenderTargetOutput;
            rtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
            rtOutput->setTexture(t);
            Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;
            m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject, layer3DS->id(),
                                       "Progressive AA RT for layer %s", layer3DS->id().constData());
            rt->addOutput(rtOutput);
            eyeData->progAA.rts[eyeData->progAA.curTarget++] = rt;
        }

        eyeData->progAA.curTarget = 0;
        auto rtSel = createProgressiveTemporalAAFramegraph(data->layerFgRoot,
                                                           eyeData->progAA.rts[eyeData->progAA.curTarget],
                                                           m_fsQuadTag,
                                                           &eyeData->progAA.layerFilter,
                                                           &eyeData->progAA.accumTexParam,
                                                           &eyeData->progAA.lastTexParam,
                                                           &eyeData->progAA.blendFactorsParam);
        eyeData->progAA.fg = eyeData->progAA.rtSel = rtSel;
    }

    // Input
    eyeData->progAA.accumTexParam->setValue(QVariant::fromValue(eyeData->progAA.currentAccumulatorTexture));
    eyeData->progAA.lastTexParam->setValue(QVariant::fromValue(data->effectActive ? eyeData->effLayerTexture : eyeData->layerTexture));
    eyeData->progAA.blendFactorsParam->setValue(blendFactor);

    // Output
    eyeData->progAA.rtSel->setTarget(eyeData->progAA.rts[eyeData->progAA.curTarget]);

    // have the compositor use the blended results instead of the layer texture
    eyeData->compositorSourceParam->setValue(QVariant::fromValue(eyeData->progAA.currentOutputTexture));

    // In the next PAA round (i.e. the frame after the next one) reuse accumTex
    // as the output and the current output as accumTex...
    std::swap(eyeData->progAA.currentAccumulatorTexture, eyeData->progAA.currentOutputTexture);
    // ...whereas the output of the next frame will be used as input, so flip the
    // index to use the correct render target.
    eyeData->progAA.curTarget = 1 - eyeData->progAA.curTarget;

    ++eyeData->progAA.pass;

    // Make sure layer caching does not interfere and the layer's framegraph subtree
    // is still active as long as PAA accumulation is active.
    m_layerUncachePending = true;

    return true;
}

// Called once per frame (in the preparation step from the frame action) for
// each progressive AA enabled layer.
bool Q3DSSceneManager::updateProgressiveAA(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    if (!data || !data->cam3DS)
        return false;

    // No prog.aa for msaa/ssaa layers - 3DS1 supports this (would need the
    // usual resolve step with blitframebuffer) but we'll live with this
    // limitation for now.
    if (data->msaaSampleCount > 1 || data->ssaaScaleFactor > 1)
        return false;

    bool returnValue = false;
    if (!m_engine->isStereoscopic()) {
        returnValue = updateEyeProgressiveAA(layer3DS, data, data->eyeMono);
    } else {
        updateEyeProgressiveAA(layer3DS, data, data->eyeLeft);
        returnValue = updateEyeProgressiveAA(layer3DS, data, data->eyeRight);
    }

    return returnValue;
}

void Q3DSSceneManager::updateEyeTemporalAA(Q3DSLayerNode *layer3DS, Q3DSLayerAttached *data, Q3DSEyeData *eyeData)
{
    static const int MAX_TEMPORAL_AA_LEVELS = 2;
    // Temporal AA is like a 2x progressive AA while the layer has movement (is
    // dirty). Accumulation stops after 2 non-dirty frames but apart from that
    // it is "always on".

    if (data->wasDirty)
        eyeData->tempAA.nonDirtyPass = 0;

    if (eyeData->tempAA.nonDirtyPass >= MAX_TEMPORAL_AA_LEVELS)
        return;

    static const QVector2D vertexOffsets[MAX_TEMPORAL_AA_LEVELS] = {
        QVector2D(0.3f, 0.3f),
        QVector2D(-0.3f, -0.3f)
    };
    static const QVector2D blendFactor(0.5f, 0.5f);

    const QVector2D vertexOffset = adjustedProgressiveTemporalAAVertexOffset(vertexOffsets[eyeData->tempAA.passIndex], data);

    if (!eyeData->tempAA.fg) {
        eyeData->tempAA.extraColorBuf = createProgressiveTemporalAAExtraBuffer(layer3DS);

        stealLayerRenderTarget(&eyeData->tempAA.stolenColorBuf, layer3DS, eyeData);
        // start with the existing color buffer as the accumulator
        eyeData->tempAA.currentAccumulatorTexture = eyeData->tempAA.stolenColorBuf;
        eyeData->tempAA.currentOutputTexture = eyeData->tempAA.extraColorBuf;

        int i = 0;
        for (Qt3DRender::QAbstractTexture *t : { eyeData->tempAA.currentOutputTexture, eyeData->tempAA.currentAccumulatorTexture }) {
            Qt3DRender::QRenderTargetOutput *rtOutput = new Qt3DRender::QRenderTargetOutput;
            rtOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
            rtOutput->setTexture(t);
            Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;
            m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject, layer3DS->id(),
                                       "Temporal AA RT for layer %s", layer3DS->id().constData());
            rt->addOutput(rtOutput);
            eyeData->tempAA.rts[i++] = rt;
        }

        auto rtSel = createProgressiveTemporalAAFramegraph(data->layerFgRoot,
                                                           eyeData->tempAA.rts[0],
                                                           m_fsQuadTag,
                                                           &eyeData->tempAA.layerFilter,
                                                           &eyeData->tempAA.accumTexParam,
                                                           &eyeData->tempAA.lastTexParam,
                                                           &eyeData->tempAA.blendFactorsParam);
        eyeData->tempAA.fg = eyeData->tempAA.rtSel = rtSel;

        eyeData->tempAA.layerFilter->addLayer(m_fsQuadTag);
    }

    // Jiggle
    Qt3DRender::QCamera *camera = static_cast<Qt3DRender::QCamera *>(eyeData->cameraSelector->camera());
    setSingleCameraSizeProperties(data, camera, vertexOffset);

    // Input
    eyeData->tempAA.accumTexParam->setValue(QVariant::fromValue(eyeData->tempAA.currentAccumulatorTexture));
    eyeData->tempAA.lastTexParam->setValue(QVariant::fromValue(data->effectActive ? eyeData->effLayerTexture : eyeData->layerTexture));
    eyeData->tempAA.blendFactorsParam->setValue(blendFactor);

    // Output
    eyeData->tempAA.rtSel->setTarget(eyeData->tempAA.rts[eyeData->tempAA.passIndex]);

    // have the compositor use the blended results instead of the layer texture
    eyeData->compositorSourceParam->setValue(QVariant::fromValue(eyeData->tempAA.currentOutputTexture));

    // play ping-pong with the buffers
    std::swap(eyeData->tempAA.currentAccumulatorTexture, eyeData->tempAA.currentOutputTexture);

    // Make sure layer caching does not interfere and the layer's framegraph subtree
    // is still active as long as TAA accumulation is active.
    m_layerUncachePending = true;

    eyeData->tempAA.passIndex = (eyeData->tempAA.passIndex + 1) % MAX_TEMPORAL_AA_LEVELS;
    ++eyeData->tempAA.nonDirtyPass;
}

void Q3DSSceneManager::updateTemporalAA(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = layer3DS->attached<Q3DSLayerAttached>();
    if (!data || !data->cam3DS)
        return;

    // No TempAA for MSAA/SSAA layers for now.
    if (data->msaaSampleCount > 1 || data->ssaaScaleFactor > 1)
        return;

    if (!m_engine->isStereoscopic()) {
        updateEyeTemporalAA(layer3DS, data, data->eyeMono);
    } else {
        updateEyeTemporalAA(layer3DS, data, data->eyeLeft);
        updateEyeTemporalAA(layer3DS, data, data->eyeRight);
    }
}

static void setLayerBlending(Qt3DRender::QBlendEquation *blendFunc,
                             Qt3DRender::QBlendEquationArguments *blendArgs,
                             Q3DSLayerNode *layer3DS)
{
    switch (layer3DS->blendType()) {
    case Q3DSLayerNode::Screen:
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::SourceAlpha);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::One);
        break;

    case Q3DSLayerNode::Multiply:
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::DestinationColor);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::Zero);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::One);
        break;

    case Q3DSLayerNode::Add:
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::One);
        break;

    case Q3DSLayerNode::Subtract:
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::ReverseSubtract);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::One);
        break;

    // ### add extension specific modes

    default: // Normal
        blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
        blendArgs->setSourceRgb(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationRgb(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);
        blendArgs->setSourceAlpha(Qt3DRender::QBlendEquationArguments::One);
        blendArgs->setDestinationAlpha(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);
        break;
    }
}

void Q3DSSceneManager::buildLayerQuadEntity(Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parentEntity,
                                            Qt3DRender::QLayer *tag, BuildLayerQuadFlags flags, int layerDepth)
{
    // Generates the layer's compositorEntity and the components on it.

    // Watch out for parenting: this entity will get destroyed and then
    // recreated eventually, therefore it and its components must not take
    // ownership of longer living objects.

    qCDebug(lcScene, "Generating compositor quad for %s with logical depth %d", layer3DS->id().constData(), layerDepth);

    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);
    Qt3DCore::QEntity *layerQuadEntity = new Qt3DCore::QEntity(parentEntity);
    layerQuadEntity->setObjectName(QObject::tr("compositor quad for %1").arg(QString::fromUtf8(layer3DS->id())));
    data->compositorEntity = layerQuadEntity;
    if (!layer3DS->flags().testFlag(Q3DSNode::Active))
        layerQuadEntity->setEnabled(false);

    // QPlaneMesh works here because the compositor shader is provided by
    // us, not imported from 3DS, and so the VS uses the Qt3D attribute names.
    Qt3DExtras::QPlaneMesh *mesh = new Qt3DExtras::QPlaneMesh;
    mesh->setWidth(2);
    mesh->setHeight(2);
    mesh->setMirrored(true);
    Qt3DCore::QTransform *transform = new Qt3DCore::QTransform;
    transform->setRotationX(90);

    // defer the sizing and positioning
    data->updateCompositorCalculations = [data, tag, mesh, transform, layerDepth]() {
        Qt3DCore::QEntity *entity = data->compositorEntity;
        if (!entity)
            return;

        if (data->layerSize.isEmpty()) {
            entity->removeComponent(tag);
            return;
        }
        if (!entity->components().contains(tag))
            entity->addComponent(tag);

        mesh->setWidth(2 * data->layerSize.width() / float(data->parentSize.width()));
        mesh->setHeight(2 * data->layerSize.height() / float(data->parentSize.height()));
        const float x = data->layerPos.x() / float(data->parentSize.width()) * 2;
        const float y = -data->layerPos.y() / float(data->parentSize.height()) * 2;
        transform->setTranslation(QVector3D(-(2.0f - mesh->width()) / 2 + x,
                                            (2.0f - mesh->height()) / 2 + y,
                                            0 - layerDepth * 0.0001f));
    };

    Qt3DRender::QMaterial *material = new Qt3DRender::QMaterial;
    Qt3DRender::QEffect *effect = new Qt3DRender::QEffect;
    Qt3DRender::QTechnique *technique = new Qt3DRender::QTechnique;
    Q3DSDefaultMaterialGenerator::addDefaultApiFilter(technique);

    Qt3DRender::QRenderPass *renderPass = new Qt3DRender::QRenderPass;

    if (flags.testFlag(LayerQuadBlend)) {
        Qt3DRender::QBlendEquation *blendFunc = new Qt3DRender::QBlendEquation;
        Qt3DRender::QBlendEquationArguments *blendArgs = new Qt3DRender::QBlendEquationArguments;
        setLayerBlending(blendFunc, blendArgs, layer3DS);
        renderPass->addRenderState(blendFunc);
        renderPass->addRenderState(blendArgs);
    }

    Qt3DRender::QDepthTest *depthTest = new Qt3DRender::QDepthTest;
    depthTest->setDepthFunction(Qt3DRender::QDepthTest::Less);
    renderPass->addRenderState(depthTest);

    data->compositorRenderPass = renderPass;

    if (!flags.testFlag(LayerQuadCustomShader)) {
        updateLayerCompositorProgram(layer3DS);

        if (!data->eyeMono->compositorSourceParam->parent())
            data->eyeMono->compositorSourceParam->setParent(data->layerSceneRootEntity);

        renderPass->addParameter(data->eyeMono->compositorSourceParam);

        if (!data->eyeLeft->compositorSourceParam->parent())
            data->eyeLeft->compositorSourceParam->setParent(data->layerSceneRootEntity);

        renderPass->addParameter(data->eyeLeft->compositorSourceParam);

        if (!data->eyeRight->compositorSourceParam->parent())
            data->eyeRight->compositorSourceParam->setParent(data->layerSceneRootEntity);

        renderPass->addParameter(data->eyeRight->compositorSourceParam);

        if (data->stereoModeParam) {
            if (!data->stereoModeParam->parent())
                data->stereoModeParam->setParent(data->layerSceneRootEntity);
            renderPass->addParameter(data->stereoModeParam);
        }
    }

    technique->addRenderPass(renderPass);
    effect->addTechnique(technique);
    material->setEffect(effect);

    layerQuadEntity->addComponent(tag);
    layerQuadEntity->addComponent(mesh);
    layerQuadEntity->addComponent(transform);
    layerQuadEntity->addComponent(material);
}

// to support switching between msaa and non-msaa composition at runtime the
// program is (re)set in this separate function
void Q3DSSceneManager::updateLayerCompositorProgram(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    if (data && data->compositorRenderPass && data->usesDefaultCompositorProgram) {
        Qt3DRender::QShaderProgram *shaderProgram = data->compositorRenderPass->shaderProgram();
        const bool programIsNew = !shaderProgram;
        if (programIsNew)
            shaderProgram = new Qt3DRender::QShaderProgram;

        const bool gles = m_gfxLimits.format.renderableType() == QSurfaceFormat::OpenGLES;
        const bool msaa = data->msaaSampleCount > 1 && !data->effectActive;

        // 1. compositor.vert + compositor.frag -> GLSL 100
        // 2. compositor_core.vert + compositor_core.frag -> 330 core
        // 3. compositor_ms.vert + compositor_ms2|ms4.frag -> GLSL 310 (MSAA)
        // 4. compositor_core.vert + compositor_ms2|ms4_core.frag -> 330 core (MSAA)
        //
        // (3. uses a separate vertex shader only to avoid linking together 100 and 310 which is not supported as per spec)

        QString vertSuffix;
        QString fragSuffix;
        if (gles) {
            vertSuffix = msaa ? QLatin1String("_ms.vert") : QLatin1String(".vert");
            fragSuffix = QLatin1String(".frag");
        } else {
            vertSuffix = QLatin1String("_core.vert");
            fragSuffix = QLatin1String("_core.frag");
        }

        QString stereoString;
        if (m_engine->isStereoscopic())
            stereoString = QLatin1String("_stereoscopic");

        const QString vertSrc = QLatin1String("qrc:/q3ds/shaders/compositor") + vertSuffix;
        shaderProgram->setVertexShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(vertSrc)));

        QString fragSrc;
        if (msaa)
            fragSrc = QLatin1String("qrc:/q3ds/shaders/compositor_ms") + QString::number(data->msaaSampleCount) + stereoString + fragSuffix;
        else
            fragSrc = QLatin1String("qrc:/q3ds/shaders/compositor") + stereoString + fragSuffix;

        shaderProgram->setFragmentShaderCode(Qt3DRender::QShaderProgram::loadSource(QUrl(fragSrc)));

        if (programIsNew)
            data->compositorRenderPass->setShaderProgram(shaderProgram);
    }
}

void Q3DSSceneManager::buildCompositor(Qt3DRender::QFrameGraphNode *parent, Qt3DCore::QEntity *parentEntity)
{
    // Simplified view (excluding advanced blending-specific nodes):
    // MatteRoot - NoDraw
    //           - [Clear - NoDraw]
    // Viewport - CameraSelector - [Scissor] - ClearBuffers - NoDraw
    //                           - "m_compositorRoot" (destroyed and recreated on-the-fly when needed)
    //                               - LayerFilter for layer quad entity 0
    //                               - LayerFilter for layer quad entity 1
    //                                 ...
    // With standard blend modes only the list is simplified to a single LayerFilter and QLayer tag.

    // Make sure to sort the layers by z-value
    auto *sortPolicy = new Qt3DRender::QSortPolicy(parent);
    sortPolicy->setSortTypes(QVector<Qt3DRender::QSortPolicy::SortType>() << Qt3DRender::QSortPolicy::FrontToBack);

    // If Matte is enabled in the ViewerSettings, then we need clear with the matte color first
    // then later restrict the scene clear color to the vieport rect with a scissor test
    m_viewportData.drawMatteNode = new Qt3DRender::QFrameGraphNode(sortPolicy);
    new Qt3DRender::QNoDraw(m_viewportData.drawMatteNode);
    m_viewportData.dummyMatteRoot = new Qt3DCore::QNode(m_rootEntity);
    m_viewportData.matteClearBuffers = new Qt3DRender::QClearBuffers(m_viewportData.dummyMatteRoot);
    m_viewportData.matteClearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorDepthStencilBuffer);
    m_viewportData.matteClearBuffers->setClearColor(Qt::black);
    new Qt3DRender::QNoDraw(m_viewportData.matteClearBuffers);

    m_viewportData.viewport = new Qt3DRender::QViewport(sortPolicy);
    m_viewportData.viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

    Qt3DRender::QCamera *camera = new Qt3DRender::QCamera;
    camera->setObjectName(QLatin1String("compositor camera"));
    camera->setProjectionType(Qt3DRender::QCameraLens::OrthographicProjection);
    camera->setLeft(-1);
    camera->setRight(1);
    camera->setTop(1);
    camera->setBottom(-1);
    camera->setPosition(QVector3D(0, 0, 1));
    camera->setViewCenter(QVector3D(0, 0, 0));

    Qt3DRender::QCameraSelector *cameraSelector = new Qt3DRender::QCameraSelector(m_viewportData.viewport);
    cameraSelector->setCamera(camera);

    m_viewportData.matteRenderState = new Qt3DRender::QRenderStateSet(cameraSelector);
    m_viewportData.matteRenderState->setEnabled(false);
    m_viewportData.matteScissorTest = new Qt3DRender::QScissorTest(m_viewportData.matteRenderState);
    m_viewportData.matteScissorTest->setEnabled(false);
    // TODO: Dragon renderer does not take this enable in to account.
//    m_viewportData.matteRenderState->addRenderState(m_viewportData.matteScissorTest);

    Qt3DRender::QClearBuffers *clearBuffers = new Qt3DRender::QClearBuffers(m_viewportData.matteRenderState);
    clearBuffers->setBuffers(Qt3DRender::QClearBuffers::ColorDepthStencilBuffer);
    QColor clearColor = Qt::transparent;
    if (m_scene->useClearColor()) {
        // Alpha is 1 here even for subpresentations. Otherwise there would
        // be no way to get the background visible when used as a texture later on.
        clearColor = m_scene->clearColor();
    }
    clearBuffers->setClearColor(clearColor);

    new Qt3DRender::QNoDraw(clearBuffers);

    new Qt3DRender::QNoDraw(cameraSelector); // there may not be any further compositor nodes (when composition gets disabled)
    m_compositorFgContainer = cameraSelector;
    m_compositorParentEntity = parentEntity;
    m_compositorClear = clearBuffers;
    rebuildCompositorLayerChain();
}

bool Q3DSSceneManager::layerNeedsAdvancedBlending(Q3DSLayerNode *layer3DS) const
{
    return layer3DS->layerBackground() == Q3DSLayerNode::Transparent
            && (layer3DS->blendType() == Q3DSLayerNode::Overlay
                || layer3DS->blendType() == Q3DSLayerNode::ColorBurn
                || layer3DS->blendType() == Q3DSLayerNode::ColorDodge);
}

void Q3DSSceneManager::updateAdvancedBlendLayers()
{
    Q3DSUipPresentation::forAllLayers(m_scene, [this](Q3DSLayerNode *layer3DS) {
        if (layerNeedsAdvancedBlending(layer3DS)) {
            updateAdvancedBlendShader(layer3DS);
        }
    }, true); // process layers in reverse order
}

void Q3DSSceneManager::updateAdvancedBlendShader(Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q_ASSERT(data);
    Qt3DRender::QRenderPass *renderPass = data->compositorRenderPass;
    bool stereoscopic = m_engine->isStereoscopic();
    switch (layer3DS->blendType()) {
    case Q3DSLayerNode::Overlay:
        renderPass->setShaderProgram(Q3DSShaderManager::instance().getBlendOverlayShader(
                                         data->entity, data->msaaSampleCount, stereoscopic));
        break;
    case Q3DSLayerNode::ColorBurn:
        renderPass->setShaderProgram(Q3DSShaderManager::instance().getBlendColorBurnShader(
                                         data->entity, data->msaaSampleCount, stereoscopic));
        break;
    case Q3DSLayerNode::ColorDodge:
        renderPass->setShaderProgram(Q3DSShaderManager::instance().getBlendColorDodgeShader(
                                         data->entity, data->msaaSampleCount, stereoscopic));
        break;
    default:
        Q_UNREACHABLE();
        break;
    }

    Qt3DRender::QParameter *baseLayerParam = new Qt3DRender::QParameter;
    baseLayerParam->setName(QLatin1String("base_layer"));
    baseLayerParam->setValue(QVariant::fromValue(data->advBlend.tempTexture));
    Qt3DRender::QParameter *blendLayerParam = new Qt3DRender::QParameter;
    renderPass->addParameter(baseLayerParam);
    if (stereoscopic) {
        Qt3DRender::QParameter *blendLayerParamLeft = new Qt3DRender::QParameter;
        blendLayerParamLeft->setName(QLatin1String("blend_layer_left"));
        blendLayerParamLeft->setValue(QVariant::fromValue(data->effectActive ? data->eyeLeft->effLayerTexture : data->eyeLeft->layerTexture));
        Qt3DRender::QParameter *blendLayerParamRight = new Qt3DRender::QParameter;
        blendLayerParamRight->setName(QLatin1String("blend_layer_right"));
        blendLayerParamRight->setValue(QVariant::fromValue(data->effectActive ? data->eyeRight->effLayerTexture : data->eyeRight->layerTexture));
        renderPass->addParameter(blendLayerParamLeft);
        renderPass->addParameter(blendLayerParamRight);
    } else {
        blendLayerParam->setName(QLatin1String("blend_layer"));
        blendLayerParam->setValue(QVariant::fromValue(data->effectActive ? data->eyeMono->effLayerTexture : data->eyeMono->layerTexture));
        renderPass->addParameter(blendLayerParam);
    }
}

void Q3DSSceneManager::rebuildCompositorLayerChain()
{
    // The order of layers in the object tree is front-to-back which is somewhat
    // unintuitive. Anyways, while it might seem that the Z value in the quad's
    // transform (based on a unique layerDepth) is sufficient to ensure the
    // correct ordering during composition (and so a full rebuild of the frame
    // and scene graph for the compositor quads is not necessary after the
    // initial buildCompositor() run), that isn't true for advanced blend mode
    // emulation because that depends heavily on back-to-front order in the
    // framegraph. Therefore we'll keep rebuilding the layer quads and
    // corresponding framegraph entries whenever the list of layers change.

    delete m_compositorRoot;
    m_compositorRoot = nullptr;
    qDeleteAll(m_compositorEntities);
    m_compositorEntities.clear();
    QVarLengthArray<Q3DSLayerNode *, 16> layers;
    Q3DSUipPresentation::forAllLayers(m_scene, [&layers](Q3DSLayerNode *layer3DS) {
        layers.append(layer3DS);
    }, true); // process layers in reverse order

    for (Q3DSLayerNode *layer3DS : layers)
        layer3DS->attached<Q3DSLayerAttached>()->compositorEntity = nullptr;

    m_compositorClear->setEnabled(m_compositorEnabled);

    if (!m_compositorEnabled)
        return;

    m_compositorRoot = new Qt3DRender::QFrameGraphNode(m_compositorFgContainer);

    qCDebug(lcPerf, "Composing %d layers in presentation %s",
            layers.count(), qPrintable(m_profiler->presentationName()));

    bool needsAdvanced = false;
    for (Q3DSLayerNode *layer3DS : layers) {
        if (layerNeedsAdvancedBlending(layer3DS)) {
            needsAdvanced = true;
            break;
        }
    }

    if (!needsAdvanced) {
        // standard case: 1 LayerFilter leaf to the framegraph, N entities (with quad mesh) to the scenegraph
        Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(m_compositorRoot);
        Qt3DRender::QLayer *tag = new Qt3DRender::QLayer; // just let it be parented to the LayerFilter
        tag->setObjectName(QLatin1String("Compositor quad pass"));
        layerFilter->addLayer(tag);
        // This works also when 'layers' is empty since we have a single leaf
        // (the LayerFilter) that will get no match for its filter.

        int layerDepth = 1;
        for (Q3DSLayerNode *layer3DS : layers) {
            BuildLayerQuadFlags flags = 0;
            if (layer3DS->layerBackground() == Q3DSLayerNode::Transparent
                || layer3DS->layerBackground() == Q3DSLayerNode::SolidColor) {
                flags |= LayerQuadBlend;
            }

            buildLayerQuadEntity(layer3DS, m_compositorParentEntity, tag, flags, layerDepth++);
            m_compositorEntities.append(layer3DS->attached<Q3DSLayerAttached>()->compositorEntity);
        }
    } else {
        qCDebug(lcPerf, "Some layers use an advanced blend mode in presentation %s. "
                        "This is slower due to an extra blit and a custom blend shader.",
                qPrintable(m_profiler->presentationName()));

        /*
            1. get a fullscreen texture (screen_texture), clear it either to (0, 0, 0, 0) or (scene.clearColor, 1)
            2. for each layer:
                  if uses advanced blend mode:
                    - get a temp_texture matching the layer size
                    - blit with screen_texture into temp_texture (only the area covered by the layer in question)
                    - draw a quad into screen_texture with the appropriate blend shader with base_layer=temp_texture and blend_layer=layer_texture
                  else:
                    - draw a quad into screen_texture with layer_texture (with normal blending)
            3. fullscreen blit with screen_texture

            Now, the fullscreen texture is not normally needed since we can
            just the backbuffer (or the subpresentation's target texture), as
            long as the blits are performed via blitFramebuffer. (would not
            work with a draw quad)
         */
        int layerDepth = 1;
        for (Q3DSLayerNode *layer3DS : layers) {
            Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
            Q_ASSERT(data);

            if (layerNeedsAdvancedBlending(layer3DS)) {
                data->usesDefaultCompositorProgram = false;

                if (!data->advBlend.tempTexture) {
                    data->advBlend.tempTexture = new Qt3DRender::QTexture2D(data->entity);
                    m_profiler->trackNewObject(data->advBlend.tempTexture, Q3DSProfiler::Texture2DObject, layer3DS->id(),
                                               "Advanced blend texture for layer %s", layer3DS->id().constData());
                    data->advBlend.tempTexture->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
                    data->advBlend.tempTexture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
                    data->advBlend.tempTexture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
                    // must track layer size, but without the SSAA scale
                    prepareSizeDependentTexture(data->advBlend.tempTexture, layer3DS, nullptr, Q3DSLayerAttached::SizeManagedTexture::IgnoreSSAA);
                }

                if (!data->advBlend.tempRt) {
                    // this assumes QTBUG-65080 is fixed
                    data->advBlend.tempRt = new Qt3DRender::QRenderTarget(data->entity);
                    m_profiler->trackNewObject(data->advBlend.tempRt, Q3DSProfiler::RenderTargetObject, layer3DS->id(),
                                               "Advanced blend RT for layer %s", layer3DS->id().constData());
                    Qt3DRender::QRenderTargetOutput *tempTexOutput = new Qt3DRender::QRenderTargetOutput;
                    tempTexOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
                    tempTexOutput->setTexture(data->advBlend.tempTexture);
                    data->advBlend.tempRt->addOutput(tempTexOutput);
                }

                Qt3DRender::QBlitFramebuffer *bgBlit = new Qt3DRender::QBlitFramebuffer(m_compositorRoot);
                bgBlit->setDestination(data->advBlend.tempRt);
                new Qt3DRender::QNoDraw(bgBlit);

                // Layer size dependent properties have to be updated dynamically.
                auto setSizeDependentValues = [bgBlit, layer3DS, data, this](Q3DSLayerNode *changedLayer) {
                    if (changedLayer != layer3DS)
                        return;

                    if (data->layerSize.isEmpty())
                        return;

                    const QPointF pos = data->layerPos + m_viewportData.viewportRect.topLeft() * m_viewportData.viewportDpr;

                    // this assumes QTBUG-65123 is fixed
                    QRectF srcRect(pos, data->layerSize);
                    bgBlit->setSourceRect(srcRect);
                    QRectF dstRect(QPointF(0, 0), data->layerSize);
                    bgBlit->setDestinationRect(dstRect);
                };
                data->layerSizeChangeCallbacks.append(setSizeDependentValues);
                // Set some initial sizes.
                setSizeDependentValues(layer3DS);

                Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(m_compositorRoot);
                Qt3DRender::QLayer *tag = new Qt3DRender::QLayer;
                tag->setObjectName(QLatin1String("Adv. blend mode compositor quad pass"));
                layerFilter->addLayer(tag);

                // Now we do not need normal blending and will provide a custom shader program.
                BuildLayerQuadFlags flags = LayerQuadCustomShader;
                buildLayerQuadEntity(layer3DS, m_compositorParentEntity, tag, flags, layerDepth++);
                m_compositorEntities.append(data->compositorEntity);
                updateAdvancedBlendShader(layer3DS);
            } else {
                data->usesDefaultCompositorProgram = true;

                Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(m_compositorRoot);
                Qt3DRender::QLayer *tag = new Qt3DRender::QLayer;
                tag->setObjectName(QLatin1String("Compositor quad pass (adv.blend path)"));
                layerFilter->addLayer(tag);

                BuildLayerQuadFlags flags = 0;
                if (layer3DS->layerBackground() == Q3DSLayerNode::Transparent)
                    flags |= LayerQuadBlend;

                buildLayerQuadEntity(layer3DS, m_compositorParentEntity, tag, flags, layerDepth++);
                m_compositorEntities.append(data->compositorEntity);
            }
        }
    }

    // When dynamically introducing a new layer, it is essential to re-run the
    // transform calculations for all layers because the logical depth
    // (layerDepth) based on which Z is generated may change for some of them.
    for (Q3DSLayerNode *layer3DS : layers)
        layer3DS->attached<Q3DSLayerAttached>()->updateCompositorCalculations();
}

void Q3DSSceneManager::buildGuiPass(Qt3DRender::QFrameGraphNode *parent, Qt3DCore::QEntity *parentEntity)
{
    // No dependencies to the actual gui renderer here. Isolate that to
    // profileui. The interface consists of tags and filter keys. profileui can
    // then assume the framegraph has the necessary LayerFilters both for
    // including and excluding.

    m_guiData.tag = new Qt3DRender::QLayer(parentEntity); // all gui entities are tagged with this
    m_guiData.activeTag = new Qt3DRender::QLayer(parentEntity); // active gui entities - added/removed to entities dynamically by imguimanager
    m_guiData.techniqueFilterKey = new Qt3DRender::QFilterKey;
    m_guiData.techniqueFilterKey->setName(QLatin1String("type"));
    m_guiData.techniqueFilterKey->setValue(QLatin1String("gui"));
    m_guiData.rootEntity = parentEntity;

    Qt3DRender::QTechniqueFilter *tfilter = new Qt3DRender::QTechniqueFilter(parent);
    m_profiler->reportFrameGraphStopNode(tfilter);
    tfilter->addMatch(m_guiData.techniqueFilterKey);

    Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport(tfilter);
    viewport->setNormalizedRect(QRectF(0, 0, 1, 1));

    Qt3DRender::QCameraSelector *cameraSel = new Qt3DRender::QCameraSelector(viewport);
    m_guiData.camera = new Qt3DRender::QCamera;
    m_guiData.camera->setProjectionType(Qt3DRender::QCameraLens::OrthographicProjection);
    m_guiData.camera->setLeft(0);
    m_guiData.camera->setRight(m_guiData.outputSize.width() * m_guiData.outputDpr);
    m_guiData.camera->setTop(0);
    m_guiData.camera->setBottom(m_guiData.outputSize.height() * m_guiData.outputDpr);
    m_guiData.camera->setNearPlane(-1);
    m_guiData.camera->setFarPlane(1);
    cameraSel->setCamera(m_guiData.camera);

    Qt3DRender::QSortPolicy *sortPolicy = new Qt3DRender::QSortPolicy(cameraSel);
    sortPolicy->setSortTypes(QVector<Qt3DRender::QSortPolicy::SortType>() << Qt3DRender::QSortPolicy::BackToFront);

    Qt3DRender::QLayerFilter *lfilter = new Qt3DRender::QLayerFilter(sortPolicy);
    lfilter->addLayer(m_guiData.activeTag);
}

Qt3DCore::QEntity *Q3DSSceneManager::buildFsQuad(const FsQuadParams &info)
{
    Q_ASSERT(info.tag);
    Q_ASSERT(info.passNames.count() == info.passProgs.count());

    Qt3DCore::QEntity *fsQuadEntity = new Qt3DCore::QEntity(info.parentEntity);
    fsQuadEntity->setObjectName(QLatin1String("fullscreen quad"));

    // The shaders should be prepared for Qt3D attribute names...
    Qt3DExtras::QPlaneMesh *mesh = new Qt3DExtras::QPlaneMesh;
    mesh->setWidth(2);
    mesh->setHeight(2);
    // ...and for a transform which is necessary due to QPlaneGeometry using the X-Z plane instead of X-Y.
    Qt3DCore::QTransform *transform = new Qt3DCore::QTransform;
    transform->setRotationX(90);
    mesh->setMirrored(true);

    Qt3DRender::QMaterial *material = new Qt3DRender::QMaterial;

    Qt3DRender::QEffect *effect = new Qt3DRender::QEffect;
    Qt3DRender::QTechnique *technique = new Qt3DRender::QTechnique;
    Q3DSDefaultMaterialGenerator::addDefaultApiFilter(technique);
    markAsMainTechnique(technique); // just to make the TechniqueFilter happy

    for (int i = 0; i < info.passNames.count(); ++i) {
        Qt3DRender::QFilterKey *filterKey = new Qt3DRender::QFilterKey;
        filterKey->setName(QLatin1String("pass"));
        filterKey->setValue(info.passNames[i]);

        Qt3DRender::QRenderPass *pass = new Qt3DRender::QRenderPass;
        pass->addFilterKey(filterKey);

        pass->setShaderProgram(info.passProgs[i]);

        for (Qt3DRender::QParameter *param : info.params)
            pass->addParameter(param);

        for (Qt3DRender::QRenderState *state : info.renderStates)
            pass->addRenderState(state);

        if (!info.flags.testFlag(FsQuadCustomDepthSettings))
            pass->addRenderState(new Qt3DRender::QNoDepthMask);

        technique->addRenderPass(pass);
    }

    effect->addTechnique(technique);
    material->setEffect(effect);

    fsQuadEntity->addComponent(info.tag);
    fsQuadEntity->addComponent(mesh);
    fsQuadEntity->addComponent(transform);
    fsQuadEntity->addComponent(material);

    return fsQuadEntity;
}

void Q3DSSceneManager::initBehaviorInstance(Q3DSBehaviorInstance *behaviorInstance)
{
    Q3DSBehaviorAttached *data = new Q3DSBehaviorAttached;
    behaviorInstance->setAttached(data);

    data->propertyChangeObserverIndex = behaviorInstance->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = behaviorInstance->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

void Q3DSSceneManager::initImage(Q3DSImage *image)
{
    Q3DSImageAttached *data = new Q3DSImageAttached;
    data->entity = m_rootEntity; // must set an entity to to make Q3DSImage properties animatable, just use the root
    image->setAttached(data);

    data->propertyChangeObserverIndex = image->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = image->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

void Q3DSSceneManager::initDefaultMaterial(Q3DSDefaultMaterial *m)
{
    Q3DSDefaultMaterialAttached *data = new Q3DSDefaultMaterialAttached;
    // the real work is deferred to prepareDefaultMaterial()
    m->setAttached(data);

    data->propertyChangeObserverIndex = m->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = m->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

void Q3DSSceneManager::initCustomMaterial(Q3DSCustomMaterialInstance *m)
{
    Q3DSCustomMaterialAttached *data = new Q3DSCustomMaterialAttached;
    // the real work is deferred to prepareCustomMaterial()
    m->setAttached(data);

    data->propertyChangeObserverIndex = m->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = m->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

void Q3DSSceneManager::initReferencedMaterial(Q3DSReferencedMaterial *m)
{
    Q3DSReferencedMaterialAttached *data = new Q3DSReferencedMaterialAttached;
    m->setAttached(data);

    data->propertyChangeObserverIndex = m->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = m->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

// Recursively builds the Qt3D scene for the given node tree under a layer. (or
// sub-tree, when called in response to a dynamic scene change with DirtyNodeAdded).
void Q3DSSceneManager::buildLayerScene(Q3DSGraphObject *obj, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    if (!obj)
        return;

    auto addChildren = [this, layer3DS](Q3DSGraphObject *obj, Qt3DCore::QEntity *parent) {
        obj = obj->firstChild();
        while (obj) {
            buildLayerScene(obj, layer3DS, parent);
            obj = obj->nextSibling();
        }
    };

    if (!obj->isNode()) {
        switch (obj->type()) {
        case Q3DSGraphObject::Image:
            Q_FALLTHROUGH();
        case Q3DSGraphObject::Behavior:
            Q_FALLTHROUGH();
        case Q3DSGraphObject::DefaultMaterial:
            Q_FALLTHROUGH();
        case Q3DSGraphObject::CustomMaterial:
            Q_FALLTHROUGH();
        case Q3DSGraphObject::ReferencedMaterial:
            // already done, nothing to do here
            break;
        case Q3DSGraphObject::Effect:
            initEffect(static_cast<Q3DSEffectInstance *>(obj), layer3DS);
            break;
        default:
            break;
        }

        if (obj->attached())
            obj->attached()->component = m_componentNodeStack.top();

        return;
    }

    Qt3DCore::QEntity *newEntity = nullptr;
    QVector<Qt3DRender::QCamera *> cameras;

    switch (obj->type()) {
    case Q3DSGraphObject::Light:
        newEntity = buildLight(static_cast<Q3DSLightNode *>(obj), layer3DS, parent);
        addChildren(obj, newEntity);
        break;

    case Q3DSGraphObject::Group:
        newEntity = buildGroup(static_cast<Q3DSGroupNode *>(obj), layer3DS, parent);
        addChildren(obj, newEntity);
        break;

    case Q3DSGraphObject::Model:
        newEntity = buildModel(static_cast<Q3DSModelNode *>(obj), layer3DS, parent);
        addChildren(obj, newEntity);
        break;

    case Q3DSGraphObject::Text:
        newEntity = buildText(static_cast<Q3DSTextNode *>(obj), layer3DS, parent);
        addChildren(obj, newEntity);
        break;

    case Q3DSGraphObject::Component:
    {
        Q3DSComponentNode *comp = static_cast<Q3DSComponentNode *>(obj);
        m_componentNodeStack.push(comp);
        newEntity = buildComponent(comp, layer3DS, parent);
        // enter the first slide of the Component
        if (!comp->currentSlide() && comp->masterSlide()) {
            if (!comp->masterSlide()->attached())
                comp->masterSlide()->setAttached(new Q3DSSlideAttached);
            Q3DSSlide *s = static_cast<Q3DSSlide *>(comp->masterSlide()->firstChild());
            if (s) {
                if (!s->attached())
                    s->setAttached(new Q3DSSlideAttached);
                comp->m_currentSlide = s;
                m_presentation->applySlidePropertyChanges(s);
                // cannot start animations before the Qt3D scene building completes -> defer
            }
        }
        // build the Component subtree
        addChildren(obj, newEntity);
        m_componentNodeStack.pop();
    }
        break;
    case Q3DSGraphObject::Camera:
        cameras = buildCameras(static_cast<Q3DSCameraNode *>(obj), layer3DS, parent);
        addChildren(obj, cameras.at(0));
        addChildren(obj, cameras.at(1));
        addChildren(obj, cameras.at(2));
        break;
    case Q3DSGraphObject::Alias:
    {
        auto alias = static_cast<Q3DSAliasNode *>(obj);
        newEntity = buildAlias(alias, layer3DS, parent);
        addChildren(obj, newEntity);
    }
        break;
    default:
        break;
    }

    if (obj->attached())
        obj->attached()->component = m_componentNodeStack.top();
}

Qt3DCore::QTransform *Q3DSSceneManager::initEntityForNode(Qt3DCore::QEntity *entity, Q3DSNode *node, Q3DSLayerNode *layer3DS)
{
    Qt3DCore::QTransform *transform = new Qt3DCore::QTransform;
    setNodeProperties(node, entity, transform, NodePropUpdateAttached);
    entity->addComponent(transform);
    Q3DSNodeAttached *data = static_cast<Q3DSNodeAttached *>(node->attached());
    data->layer3DS = layer3DS;
    return transform;
}

namespace {
float clampOpacity(float f)
{
    f = qBound(0.0f, f, 1.0f);
    // make sure 1 is 1 so we won't end up with opacity < 1 == false
    if (qFuzzyCompare(f, 1.0f))
        f = 1.0f;
    return f;
}
}

void Q3DSSceneManager::setNodeProperties(Q3DSNode *node, Qt3DCore::QEntity *entity,
                                         Qt3DCore::QTransform *transform, SetNodePropFlags flags)
{
    Q3DSNodeAttached *data = static_cast<Q3DSNodeAttached *>(node->attached());
    Q_ASSERT(data);

    // Our scene uses a right-handed coordinate system. Left handed nodes
    // (which is the default for 3DS) must have their translation and rotation
    // adjusted accordingly.
    const bool leftHanded = node->orientation() == Q3DSNode::LeftHanded;

    QMatrix4x4 rot = generateRotationMatrix(node->rotation(), node->rotationOrder());

    QMatrix4x4 m;
    float *mp = m.data();
    const QVector3D pos = node->position();
    const QVector3D scale = node->scale();
    const QVector3D scaledPivot = -node->pivot() * scale;
    mp[0] = scale.x();
    mp[5] = scale.y();
    mp[10] = scale.z();
    mp[12] = scaledPivot.x();
    mp[13] = scaledPivot.y();
    mp[14] = leftHanded ? scaledPivot.z() : -scaledPivot.z();
    m = rot * m;
    mp[12] += pos.x();
    mp[13] += pos.y();
    mp[14] += leftHanded ? pos.z() : -pos.z();
    if (leftHanded) {
        adjustRotationLeftToRight(&m);
        mp[14] *= -1;
    }

    if (node->type() == Q3DSGraphObject::Text)
        m.rotate(90, 1, 0, 0); // adjust for QPlaneMesh's X-Z default

    transform->setMatrix(m); // this will also decompose into the individual properties -> good!

    if (flags.testFlag(NodePropUpdateAttached)) {
        Q_ASSERT(entity);
        data->entity = entity;
        data->transform = transform;
    }

    UpdateGlobalFlags ugflags = 0;
    if (flags.testFlag(NodePropUpdateGlobalsRecursively))
        ugflags |= UpdateGlobalsRecursively;
    updateGlobals(node, ugflags);
}

void Q3DSSceneManager::updateGlobals(Q3DSNode *node, UpdateGlobalFlags flags)
{
    Q3DSNodeAttached *data = static_cast<Q3DSNodeAttached *>(node->attached());
    if (!data)
        return;
    Q3DSNodeAttached *parentData = node->parent()->isNode()
            ? static_cast<Q3DSNodeAttached *>(node->parent()->attached()) : nullptr;

    QMatrix4x4 globalTransform;
    float globalOpacity;
    bool globalLogicalVisibility;
    bool globalEffectiveVisibility;

    if (parentData) {
        if (!flags.testFlag(UpdateGlobalsSkipTransform)) {
            // cache the global transform in the Q3DSNode for easy access
            globalTransform = parentData->globalTransform * data->transform->matrix();
        }
        // update the global, inherited opacity
        globalOpacity = clampOpacity(parentData->globalOpacity * (node->localOpacity() / 100.0f));
        // update inherited visibility
        globalLogicalVisibility = node->flags().testFlag(Q3DSNode::Active) && parentData->globalLogicalVisibility;
        globalEffectiveVisibility = node->flags().testFlag(Q3DSNode::Active)
                && data->visibilityTag == Q3DSGraphObjectAttached::Visible
                && parentData->globalEffectiveVisibility;
    } else {
        if (!flags.testFlag(UpdateGlobalsSkipTransform))
            globalTransform = data->transform->matrix();
        globalOpacity = clampOpacity(node->localOpacity() / 100.0f);
        globalLogicalVisibility = node->flags().testFlag(Q3DSNode::Active);
        globalEffectiveVisibility = node->flags().testFlag(Q3DSNode::Active)
                && data->visibilityTag == Q3DSGraphObjectAttached::Visible;
    }

    if (!flags.testFlag(UpdateGlobalsSkipTransform) && globalTransform != data->globalTransform) {
        data->globalTransform = globalTransform;
        data->frameDirty.setFlag(Q3DSGraphObjectAttached::GlobalTransformDirty, true);
    }
    if (globalOpacity != data->globalOpacity) {
        data->globalOpacity = globalOpacity;
        data->frameDirty.setFlag(Q3DSGraphObjectAttached::GlobalOpacityDirty, true);
    }
    if (globalLogicalVisibility != data->globalLogicalVisibility
            || globalEffectiveVisibility != data->globalEffectiveVisibility)
    {
        data->globalLogicalVisibility = globalLogicalVisibility;
        data->globalEffectiveVisibility = globalEffectiveVisibility;
        data->frameDirty.setFlag(Q3DSGraphObjectAttached::GlobalVisibilityDirty, true);
    }

    // Now frameDirty has the relevant bits set only when the corresponding
    // value has actually changed. Based on this, it is time to put the rolling
    // effect of these inherited values into action (e.g. when an ancestor goes
    // invisible, the children should go invisible as well).
    if (data->frameDirty.testFlag(Q3DSGraphObjectAttached::GlobalTransformDirty)
            || data->frameDirty.testFlag(Q3DSGraphObjectAttached::GlobalOpacityDirty)
            || data->frameDirty.testFlag(Q3DSGraphObjectAttached::GlobalVisibilityDirty))
    {
        handleNodeGlobalChange(node);
    }

    if (flags.testFlag(UpdateGlobalsRecursively)) {
        Q3DSGraphObject *obj = node->firstChild();
        while (obj) {
            if (obj->isNode())
                updateGlobals(static_cast<Q3DSNode *>(obj), flags);
            obj = obj->nextSibling();
        }
    }
}

Qt3DCore::QEntity *Q3DSSceneManager::buildGroup(Q3DSGroupNode *group3DS, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    Q3DSGroupAttached *data = new Q3DSGroupAttached;
    group3DS->setAttached(data);

    Qt3DCore::QEntity *group = new Qt3DCore::QEntity(parent);
    group->setObjectName(QObject::tr("group %1").arg(QString::fromUtf8(group3DS->id())));
    initEntityForNode(group, group3DS, layer3DS);

    data->propertyChangeObserverIndex = group3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = group3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    return group;
}

Qt3DCore::QEntity *Q3DSSceneManager::buildComponent(Q3DSComponentNode *comp3DS, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    Q3DSComponentAttached *data = new Q3DSComponentAttached;
    comp3DS->setAttached(data);

    Qt3DCore::QEntity *comp = new Qt3DCore::QEntity(parent);
    comp->setObjectName(QObject::tr("component %1").arg(QString::fromUtf8(comp3DS->id())));
    initEntityForNode(comp, comp3DS, layer3DS);

    data->propertyChangeObserverIndex = comp3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = comp3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    return comp;
}

Qt3DCore::QEntity *Q3DSSceneManager::buildAlias(Q3DSAliasNode *alias3DS, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    Q3DSAliasAttached *data = new Q3DSAliasAttached;
    alias3DS->setAttached(data);

    auto aliasEntity = new Qt3DCore::QEntity(parent);
    aliasEntity->setObjectName(QObject::tr("alias %1").arg(QString::fromUtf8(alias3DS->id())));
    initEntityForNode(aliasEntity, alias3DS, layer3DS);

    data->propertyChangeObserverIndex = alias3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = alias3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    return aliasEntity;
}

class Q3DSTextImage : public Qt3DRender::QPaintedTextureImage
{
public:
    Q3DSTextImage(Q3DSTextNode *text3DS, Q3DSTextRenderer *textRenderer)
        : m_text3DS(text3DS), m_textRenderer(textRenderer)
    { }

    void paint(QPainter *painter) override;

private:
    Q3DSTextNode *m_text3DS;
    Q3DSTextRenderer *m_textRenderer;
};

void Q3DSTextImage::paint(QPainter *painter)
{
    m_textRenderer->renderText(painter, m_text3DS);
}

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
static bool distanceFieldsEnabled()
{
    const char *name = "Q3DS_DISTANCE_FIELD_DISABLED";
    if (!qEnvironmentVariableIsEmpty(name)) {
        const QByteArray value = qgetenv(name);
        if (value != "0" && value != "false")
            return false;
    }

    return true;
}
#endif

Qt3DCore::QEntity *Q3DSSceneManager::buildText(Q3DSTextNode *text3DS, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    Q3DSTextAttached *data = static_cast<Q3DSTextAttached *>(text3DS->attached());

    // This function may be called with an existing entity that should be reused, specifically for
    // distance-field text
    if (data == nullptr) {
        data = new Q3DSTextAttached;
        text3DS->setAttached(data);
        data->propertyChangeObserverIndex = text3DS->addPropertyChangeObserver(
                    std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
        data->eventObserverIndex = text3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
    }

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    static bool shouldDistanceFieldRender = distanceFieldsEnabled();

    if (data->entity != nullptr && text3DS->shadow() != data->dropShadow) {
        for (int i = 0; i < data->glyphsReferencedInSubentity.size(); ++i) {
            QPair<Q3DSDistanceFieldGlyphCache *, QVector<quint32> > &glyphsReferenced = data->glyphsReferencedInSubentity[i];
            if (glyphsReferenced.first != nullptr && !glyphsReferenced.second.isEmpty())
                glyphsReferenced.first->release(glyphsReferenced.second);
        }

        delete data->entity;
        data->entity = nullptr;
    }
#endif

    // Regardless of what we do when reusing an entity, we need to remove all the connections established for the
    // the previous one
    for (QMetaObject::Connection &connection : data->connections)
        QObject::disconnect(connection);
    data->connections.clear();

    if (data->entity == nullptr) {
        data->entity = new Qt3DCore::QEntity(parent);
        initEntityForNode(data->entity, text3DS, layer3DS);
    }
    data->entity->setObjectName(QObject::tr("top level text %1").arg(QString::fromUtf8(text3DS->id())));

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    bool useDistanceFields = shouldDistanceFieldRender && text3DS->wordWrap() != Q3DSTextNode::Clip;
    if (useDistanceFields) {
        data->distanceFieldText = true;
        data->dropShadow = text3DS->shadow();
        QVector2D boundingBox = text3DS->boundingBox();

        QRawFont font = m_fontDatabase->findFont(text3DS->font());
        qreal scaleFactor = font.pixelSize() / text3DS->size();

        const qreal maximumWidth = boundingBox.isNull() ? qreal(0x01000000) : qreal(boundingBox.x()) * scaleFactor;
        const qreal maximumHeight = boundingBox.isNull() ? qreal(0x01000000) : qreal(boundingBox.y()) * scaleFactor;

        QTextLayout layout;
        QTextOption option = layout.textOption();

        QTextOption::WrapMode wrapMode;
        switch (text3DS->wordWrap()) {
        case Q3DSTextNode::Clip:
            wrapMode = QTextOption::ManualWrap;
            break;
        case Q3DSTextNode::WrapWord:
            wrapMode = QTextOption::WrapAtWordBoundaryOrAnywhere;
            break;
        case Q3DSTextNode::WrapAnywhere:
            wrapMode = QTextOption::WrapAnywhere;
            break;
        };
        option.setWrapMode(wrapMode);
        option.setUseDesignMetrics(true);

        layout.setTextOption(option);
        layout.setRawFont(font);

        QString text = text3DS->text();
        text.replace(QLatin1Char('\n'), QChar::LineSeparator);

        qreal width;
        qreal height;
        bool needsElide;
        do {
            needsElide = false;

            layout.clearLayout();

            float leading = text3DS->leading() * scaleFactor;
            width = 0.0;
            height = qreal(-leading);

            QVector<QTextLayout::FormatRange> formatRanges;

            QTextLayout::FormatRange formatRange;
            formatRange.start = 0;
            formatRange.length = text.length();
            formatRange.format.setFontLetterSpacingType(QFont::AbsoluteSpacing);
            formatRange.format.setFontLetterSpacing(qreal(text3DS->tracking()) * scaleFactor);
            formatRanges.append(formatRange);
            layout.setFormats(formatRanges);

            layout.setText(text);
            layout.beginLayout();

            QTextLine previousLine;
            forever {
                QTextLine line = layout.createLine();
                if (!line.isValid())
                    break;

                line.setLineWidth(maximumWidth);
                height += qreal(leading);
                height = qCeil(height);

                qreal textWidth = line.naturalTextWidth();
                line.setPosition(QPointF(0.0, height));

                width = qMin(maximumWidth, qMax(width, textWidth));
                height += layout.engine()->lines[line.lineNumber()].height().toReal();

                // Fast path for right elide
                if (text3DS->elide() == Q3DSTextNode::ElideRight
                        && previousLine.isValid()
                        && height > maximumHeight) {
                    break;
                }

                previousLine = line;
            }
            layout.endLayout();

            if (text3DS->elide() != Q3DSTextNode::ElideNone && height > maximumHeight) {
                needsElide = true;

                QString elidedText;
                switch (text3DS->elide()) {
                case Q3DSTextNode::ElideRight:
                    if (previousLine.textStart() > 0)
                        elidedText = text.left(previousLine.textStart());

                    elidedText += layout.engine()->elidedText(Qt::ElideRight,
                                                              QFixed::fromReal(width),
                                                              0,
                                                              previousLine.textStart(),
                                                              text.length() - previousLine.textStart());
                    break;
                case Q3DSTextNode::ElideLeft:
                    {
                        height = 0.0;
                        previousLine = QTextLine();
                        for (int i = layout.lineCount() - 1; i >= 0; --i) {
                            qreal lineHeight = layout.lineAt(i).height();
                            if (i < layout.lineCount() - 1 && height + lineHeight > maximumHeight)
                                break;
                            height += lineHeight;
                            previousLine = layout.lineAt(i);
                        }

                        Q_ASSERT(previousLine.isValid());
                        elidedText += layout.engine()->elidedText(Qt::ElideLeft,
                                                                  QFixed::fromReal(width),
                                                                  0,
                                                                  0,
                                                                  previousLine.textStart() + previousLine.textLength());

                        int nextPosition = (previousLine.textStart() + previousLine.textLength());
                        if (nextPosition < text.length())
                            elidedText += text.mid(nextPosition);
                        break;
                    }
                case Q3DSTextNode::ElideMiddle:
                    {
                        height = 0.0;
                        QTextLine lastLineBefore;
                        QTextLine firstLineAfter;
                        for (int i = 0; i < (layout.lineCount() / 2) + (layout.lineCount() % 2); ++i) {
                            qreal lineHeight = 3 * layout.lineAt(i).height();
                            if (height + lineHeight > maximumHeight)
                                break;
                            height += lineHeight;

                            lastLineBefore = layout.lineAt(i);
                            firstLineAfter = layout.lineAt(layout.lineCount() - i - 1);
                        }


                        int nextPosition = 0;
                        if (lastLineBefore.isValid()) {
                            elidedText += text.left(lastLineBefore.textStart() + lastLineBefore.textLength());
                            nextPosition = lastLineBefore.textStart() + lastLineBefore.textLength();
                        }

                        QString suffix;
                        int length = text.length() - nextPosition;
                        if (firstLineAfter.isValid()) {
                            length = firstLineAfter.textStart() - nextPosition;
                            suffix = text.mid(firstLineAfter.textStart());
                        }

                        elidedText += layout.engine()->elidedText(Qt::ElideMiddle,
                                                                  QFixed::fromReal(width),
                                                                  0,
                                                                  nextPosition,
                                                                  length);

                        elidedText += suffix;
                        break;
                    }
                case Q3DSTextNode::ElideNone:
                    Q_UNREACHABLE();
                };

                // Failsafe
                if (elidedText.isEmpty() || elidedText == text)
                    needsElide = false;
                else
                    text = elidedText;
            }
        } while (needsElide);

        struct GlyphInfo {
            QVector<float> vertexes;
            QVector<quint32> glyphIndexes;
            Q3DSDistanceFieldGlyphCache *cache;
            float fontScale;
            float shadowOffsetX;
            float shadowOffsetY;
        };

        QHash<Q3DSDistanceFieldGlyphCache::TextureInfo *, GlyphInfo> glyphsPerTexture;

        float originY = float(height) / 2.0f;
        if (text3DS->verticalAlignment() == Q3DSTextNode::Bottom)
            originY = float(height);
        else if (text3DS->verticalAlignment() == Q3DSTextNode::Top)
            originY = 0.0;

        float originX = float(width) / 2.0f;
        if (text3DS->horizontalAlignment() == Q3DSTextNode::Right)
            originX = float(width);
        else if (text3DS->horizontalAlignment() == Q3DSTextNode::Left)
            originX = 0.0;

        float offsetY = -originY;

        // To match the original behavior of the sources, we don't actually align to
        // the bounding box. This is only used for word wrapping and elide. Keeping the
        // code here in case this was a mistake or we for some other reason want to change
        // it.
#if 0
       // If there is no bounding box, then alignmentHeight == height, so we skip it
       if (!boundingBox.isNull() && text3DS->verticalAlignment() == Q3DSTextNode::Bottom)
            offsetY += float(maximumHeight - height);
        else if (!boundingBox.isNull() && text3DS->verticalAlignment() == Q3DSTextNode::Middle)
            offsetY += float(maximumHeight / 2.0 - height / 2.0);
        float alignmentWidth = boundingBox.isNull() ? float(width) : float(maximumWidth);
#else
        float alignmentWidth = float(width);
#endif

        for (int i = 0; i < layout.lineCount(); ++i) {
            QTextLine line = layout.lineAt(i);

            float offsetX = -originX;
            if (text3DS->horizontalAlignment() == Q3DSTextNode::Right)
                offsetX += alignmentWidth - float(line.naturalTextWidth());
            else if (text3DS->horizontalAlignment() == Q3DSTextNode::Center)
                offsetX += alignmentWidth / 2.0f - float(line.naturalTextWidth()) / 2.0f;

            QList<QGlyphRun> glyphRuns = line.glyphRuns();
            for (const QGlyphRun &glyphRun : glyphRuns) {
                const QVector<quint32> glyphIndexes = glyphRun.glyphIndexes();
                const QVector<QPointF> glyphPositions = glyphRun.positions();

                Q3DSDistanceFieldGlyphCache *cache = m_glyphCacheManager->glyphCache(glyphRun.rawFont());
                cache->populate(glyphRun.glyphIndexes());
                cache->processPendingGlyphs();

                qreal fontPixelSize = glyphRun.rawFont().pixelSize();

                float shadowOffsetX = float(cache->fontSize()) * text3DS->shadowOffsetX() / 1000.0f;
                float shadowOffsetY = float(cache->fontSize()) * text3DS->shadowOffsetY() / 1000.0f;

                qreal maxTexMargin = cache->distanceFieldRadius();
                qreal fontScale = cache->fontScale(fontPixelSize);
                qreal margin = 2;
                qreal texMargin = margin / fontScale;
                if (texMargin > maxTexMargin) {
                    texMargin = maxTexMargin;
                    margin = maxTexMargin * fontScale;
                }

                for (int i = 0; i < glyphIndexes.size(); ++i) {
                    quint32 glyphIndex = glyphIndexes.at(i);
                    QPointF position = glyphPositions.at(i);

                    QSGDistanceFieldGlyphCache::TexCoord c = cache->glyphTexCoord(glyphIndex);
                    if (c.isNull())
                        continue;

                    QSGDistanceFieldGlyphCache::Metrics metrics = cache->glyphMetrics(glyphIndex, fontPixelSize);
                    if (metrics.isNull())
                        continue;

                    metrics.width += margin * 2;
                    metrics.height += margin * 2;
                    metrics.baselineX -= margin;
                    metrics.baselineY += margin;
                    c.xMargin -= texMargin;
                    c.yMargin -= texMargin;
                    c.width += texMargin * 2;
                    c.height += texMargin * 2;

                    float cx1 = float(position.x() + metrics.baselineX) + offsetX;
                    float cx2 = cx1 + float(metrics.width);
                    float cy1 = float(position.y() - metrics.baselineY) + offsetY;
                    float cy2 = cy1 + float(metrics.height);

                    cx1 /= scaleFactor;
                    cy1 /= scaleFactor;
                    cx2 /= scaleFactor;
                    cy2 /= scaleFactor;

                    if (text3DS->shadow()) {
                        if (shadowOffsetX < 0.0)
                            cx1 += shadowOffsetX * fontScale;
                        else
                            cx2 += shadowOffsetX * fontScale;

                        if (shadowOffsetY < 0.0)
                            cy1 += shadowOffsetY * fontScale;
                        else
                            cy2 += shadowOffsetY * fontScale;
                    }

                    float tx1 = float(c.x + c.xMargin);
                    float tx2 = tx1 + float(c.width);
                    float ty1 = float(c.y + c.yMargin);
                    float ty2 = ty1 + float(c.height);

                    // Preserve original bounds of glyphs
                    float ttx1 = tx1;
                    float tty1 = ty1;
                    float ttx2 = tx2;
                    float tty2 = ty2;

                    if (text3DS->shadow()) {
                        if (shadowOffsetX < 0.0)
                            tx1 += float(c.width) * shadowOffsetX * fontScale / float(metrics.width);
                        else
                            tx2 += float(c.width) * shadowOffsetX * fontScale / float(metrics.width);

                        if (shadowOffsetY < 0.0)
                            ty1 += float(c.height) * shadowOffsetY * fontScale / float(metrics.height);
                        else
                            ty2 += float(c.height) * shadowOffsetY * fontScale / float(metrics.height);
                    }

                    const QSGDistanceFieldGlyphCache::Texture *texture = cache->glyphTexture(glyphIndex);
                    if (texture->textureId == 0) {
                        qWarning() << "Empty texture for glyph" << glyphIndex;
                        continue;
                    }

                    Q3DSDistanceFieldGlyphCache::TextureInfo *textureInfo = cache->textureInfoById(texture->textureId);

                    GlyphInfo &glyphInfo = glyphsPerTexture[textureInfo];
                    glyphInfo.fontScale = float(fontScale);
                    glyphInfo.shadowOffsetX = shadowOffsetX;
                    glyphInfo.shadowOffsetY = shadowOffsetY;
                    glyphInfo.cache = cache;
                    glyphInfo.glyphIndexes.append(glyphIndex);

                    QVector<float> &vertexes = glyphInfo.vertexes;
                    vertexes.reserve(vertexes.size() + 20 + (text3DS->shadow() ? 16 : 0));

                    vertexes.append(cx1);
                    vertexes.append(0.0);
                    vertexes.append(cy1);
                    vertexes.append(tx1);
                    vertexes.append(ty1);

                    if (text3DS->shadow()) {
                        vertexes.append(ttx1);
                        vertexes.append(tty1);
                        vertexes.append(ttx2);
                        vertexes.append(tty2);
                    }

                    vertexes.append(cx2);
                    vertexes.append(0.0);
                    vertexes.append(cy1);
                    vertexes.append(tx2);
                    vertexes.append(ty1);

                    if (text3DS->shadow()) {
                        vertexes.append(ttx1);
                        vertexes.append(tty1);
                        vertexes.append(ttx2);
                        vertexes.append(tty2);
                    }

                    vertexes.append(cx2);
                    vertexes.append(0.0);
                    vertexes.append(cy2);
                    vertexes.append(tx2);
                    vertexes.append(ty2);

                    if (text3DS->shadow()) {
                        vertexes.append(ttx1);
                        vertexes.append(tty1);
                        vertexes.append(ttx2);
                        vertexes.append(tty2);
                    }

                    vertexes.append(cx1);
                    vertexes.append(0.0);
                    vertexes.append(cy2);
                    vertexes.append(tx1);
                    vertexes.append(ty2);

                    if (text3DS->shadow()) {
                        vertexes.append(ttx1);
                        vertexes.append(tty1);
                        vertexes.append(ttx2);
                        vertexes.append(tty2);
                    }
                }
            }
        }

        // Reset and rebuild this
        data->colorParam.clear();

        // Dereference glyphs held by old subentities *after* we have referenced the ones needed by the new ones
        for (int i = 0; i < data->glyphsReferencedInSubentity.size(); ++i) {
            QPair<Q3DSDistanceFieldGlyphCache *, QVector<quint32> > &glyphsReferenced = data->glyphsReferencedInSubentity[i];
            if (glyphsReferenced.first != nullptr && !glyphsReferenced.second.isEmpty())
                glyphsReferenced.first->release(glyphsReferenced.second);
        }
        data->glyphsReferencedInSubentity.resize(glyphsPerTexture.size());

        QList<Qt3DCore::QEntity *> subentities = data->entity->findChildren<Qt3DCore::QEntity *>(QString(),
                                                                                                 Qt::FindDirectChildrenOnly);
        while (subentities.size() > glyphsPerTexture.size())
            delete subentities.takeLast();

        while (subentities.size() < glyphsPerTexture.size()) {
            Qt3DCore::QEntity *subentity = new Qt3DCore::QEntity(data->entity);
            subentity->setObjectName(QObject::tr("text item %1").arg(subentities.size()));

            Q3DSTextMesh *mesh = new Q3DSTextMesh;
            subentity->addComponent(mesh);

            Qt3DRender::QParameter *colorParam = new Qt3DRender::QParameter;
            colorParam->setName(QLatin1String("color"));

            Qt3DRender::QParameter *textureParam = new Qt3DRender::QParameter;
            textureParam->setName(QLatin1String("_qt_texture"));

            Qt3DRender::QParameter *textureWidthParam = new Qt3DRender::QParameter;
            textureWidthParam->setName(QLatin1String("textureWidth"));

            Qt3DRender::QParameter *textureHeightParam = new Qt3DRender::QParameter;
            textureHeightParam->setName(QLatin1String("textureHeight"));

            Qt3DRender::QParameter *fontScaleParam = new Qt3DRender::QParameter;
            fontScaleParam->setName(QLatin1String("fontScale"));

            QVector<Qt3DRender::QParameter *> params = { colorParam,
                                                         textureParam,
                                                         fontScaleParam,
                                                         textureWidthParam,
                                                         textureHeightParam };

            if (text3DS->shadow()) {
                Qt3DRender::QParameter *shadowColorParam = new Qt3DRender::QParameter;
                shadowColorParam->setName(QLatin1String("shadowColor"));
                params.append(shadowColorParam);

                Qt3DRender::QParameter *shadowOffsetParam = new Qt3DRender::QParameter;
                shadowOffsetParam->setName(QLatin1String("shadowOffset"));
                params.append(shadowOffsetParam);
            }

            Qt3DRender::QMaterial *material = m_distanceFieldMaterialGenerator->generateMaterial(params, text3DS->shadow());
            subentity->addComponent(material);
            subentities.append(subentity);
        }

        QHash<Q3DSDistanceFieldGlyphCache::TextureInfo *, GlyphInfo>::const_iterator it;

        int subentityIndex = 0;
        int shadowRgb = int(2.55f * (100 - int(text3DS->shadowStrength())));
        for (it = glyphsPerTexture.constBegin(); it != glyphsPerTexture.constEnd(); ++it) {
            const GlyphInfo &glyphInfo = it.value();
            const QVector<float> &vertexes = glyphInfo.vertexes;
            Q_ASSERT(!vertexes.isEmpty());

            data->glyphsReferencedInSubentity[subentityIndex] = qMakePair(glyphInfo.cache, glyphInfo.glyphIndexes);

            Qt3DCore::QEntity *subentity = subentities.at(subentityIndex++);
            Q_ASSERT(subentity != nullptr);

            for (Qt3DCore::QComponent *component : subentity->components()) {
                {
                    Q3DSTextMesh *mesh = qobject_cast<Q3DSTextMesh *>(component);
                    if (mesh != nullptr)
                        mesh->setVertexes(vertexes, text3DS->shadow());
                }

                {
                    Qt3DRender::QMaterial *material = qobject_cast<Qt3DRender::QMaterial *>(component);
                    if (material != nullptr) {
                        QList<Qt3DRender::QParameter *> parameters = material->findChildren<Qt3DRender::QParameter *>();
                        for (Qt3DRender::QParameter *parameter : parameters) {
                            if (parameter->name() == QLatin1String("color")) {
                                QVector4D color(float(text3DS->color().redF()),
                                                float(text3DS->color().greenF()),
                                                float(text3DS->color().blueF()),
                                                float(text3DS->color().alphaF()));

                                parameter->setValue(color * data->globalOpacity);
                                data->colorParam.append(parameter);
                            } else if (parameter->name() == QLatin1String("shadowColor")) {
                                parameter->setValue(QColor(shadowRgb, shadowRgb, shadowRgb));
                            } else if (parameter->name() == QLatin1String("shadowOffset")) {
                                parameter->setValue(QVector2D(glyphInfo.shadowOffsetX, glyphInfo.shadowOffsetY));
                            } else if (parameter->name() == QLatin1String("_qt_texture")) {
                                parameter->setValue(QVariant::fromValue(it.key()->texture));
                            } else if (parameter->name() == QLatin1String("fontScale")) {
                                parameter->setValue(glyphInfo.fontScale * float(m_viewportData.viewportDpr));
                            } else if (parameter->name() == QLatin1String("textureWidth")) {
                                parameter->setValue(it.key()->texture->width());

                                data->connections.append(QObject::connect(it.key()->texture, &Qt3DRender::QAbstractTexture::widthChanged,
                                                                          parameter, &Qt3DRender::QParameter::setValue));

                            } else if (parameter->name() == QLatin1String("textureHeight")) {
                                parameter->setValue(it.key()->texture->height());
                                data->connections.append(QObject::connect(it.key()->texture, &Qt3DRender::QAbstractTexture::heightChanged,
                                                                          parameter, &Qt3DRender::QParameter::setValue));
                            }
                        }
                    }
                }
            }
        }

    } else
#endif
    {
        QSize sz = m_textRenderer->textImageSize(text3DS);
        if (sz.isEmpty())
            return data->entity;

        data->mesh = new Qt3DExtras::QPlaneMesh;
        data->mesh->setWidth(sz.width());
        data->mesh->setHeight(sz.height());
        data->mesh->setMirrored(true);
        data->entity->addComponent(data->mesh);

        data->opacityParam = new Qt3DRender::QParameter;
        data->opacityParam->setName(QLatin1String("opacity"));
        data->opacityParam->setValue(data->globalOpacity);

        Qt3DRender::QParameter *colorParam = new Qt3DRender::QParameter;
        colorParam->setName(QLatin1String("color"));
        colorParam->setValue(text3DS->color());
        data->colorParam.append(colorParam);

        data->texture = new Qt3DRender::QTexture2D;
        m_profiler->trackNewObject(data->texture, Q3DSProfiler::Texture2DObject,
                                   "Texture for text item %s", text3DS->id().constData());
        data->texture->setGenerateMipMaps(true);
        data->texture->setMinificationFilter(Qt3DRender::QAbstractTexture::LinearMipMapLinear);
        data->texture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);

        data->textureImage = new Q3DSTextImage(text3DS, m_textRenderer);
#if QT_VERSION >= QT_VERSION_CHECK(5,11,1)
        auto texImageD = static_cast<Qt3DRender::QPaintedTextureImagePrivate *>(
                    Qt3DRender::QPaintedTextureImagePrivate::get(data->textureImage));
        texImageD->m_devicePixelRatio = m_viewportData.viewportDpr;
        data->textureImage->setSize(sz * m_viewportData.viewportDpr);
#else
        data->textureImage->setSize(sz);
#endif
        data->texture->addTextureImage(data->textureImage);

        data->textureParam = new Qt3DRender::QParameter;
        data->textureParam->setName(QLatin1String("tex"));
        data->textureParam->setValue(QVariant::fromValue(data->texture));

        Qt3DRender::QMaterial *material = m_textMatGen->generateMaterial({ data->opacityParam, colorParam, data->textureParam });
        data->entity->addComponent(material);
    }

    return data->entity;
}

void Q3DSSceneManager::updateText(Q3DSTextNode *text3DS, bool needsNewImage)
{
    Q3DSTextAttached *data = static_cast<Q3DSTextAttached *>(text3DS->attached());
    Q_ASSERT(data);

    if (data->frameDirty.testFlag(Q3DSGraphObjectAttached::GlobalOpacityDirty) && data->opacityParam != nullptr)
        data->opacityParam->setValue(data->globalOpacity);

#if QT_VERSION < QT_VERSION_CHECK(5,12,2)
    Q_ASSERT(!data->distanceFieldText);
#endif

    QVector4D color(float(text3DS->color().redF()),
                    float(text3DS->color().greenF()),
                    float(text3DS->color().blueF()),
                    float(text3DS->color().alphaF()));

    // Distance field shader expects premultiplied colors
    if (data->distanceFieldText)
        color *= data->globalOpacity;

    for (Qt3DRender::QParameter *colorParam : data->colorParam)
        colorParam->setValue(color);

#if QT_VERSION >= QT_VERSION_CHECK(5,12,2)
    if (data->distanceFieldText) { // Distance fields
        if (needsNewImage) {
            data->opacityParam = nullptr;
            data->textureParam = nullptr;
            data->texture = nullptr;
            data->textureImage = nullptr;

            Qt3DCore::QEntity *parentEntity = data->entity->parentEntity();
            buildText(text3DS, data->layer3DS, parentEntity);
        }
    } else
#endif
    if (needsNewImage) {
        // textstring, leading, tracking, ...
        const QSize sz = m_textRenderer->textImageSize(text3DS);
        if (!sz.isEmpty()) {
            data->mesh->setWidth(sz.width());
            data->mesh->setHeight(sz.height());
#if QT_VERSION >= QT_VERSION_CHECK(5,11,1)
            const QSize pixelSize = sz * m_viewportData.viewportDpr;
            auto texImageD = static_cast<Qt3DRender::QPaintedTextureImagePrivate *>(
                        Qt3DRender::QPaintedTextureImagePrivate::get(data->textureImage));
            if (data->textureImage->size() != pixelSize
                    || texImageD->m_devicePixelRatio != m_viewportData.viewportDpr)
            {
                texImageD->m_devicePixelRatio = m_viewportData.viewportDpr;
                // this repaints, no need for update() afterwards
                data->textureImage->setSize(pixelSize);
            } else {
                data->textureImage->update();
            }

            // Calculate the required position offsets to match alignments
            QSize textSize(sz / 2.0); // ignore device pixel ratio
            QVector3D textScale(text3DS->scale());
            int textOffsetX = 0;
            int textOffsetY = 0;

            switch (text3DS->horizontalAlignment()) {
            case Q3DSTextNode::Left:
                textOffsetX = textSize.width() * textScale.x();
                break;
            case Q3DSTextNode::Right:
                textOffsetX = -textSize.width() * textScale.x();
                break;
            case Q3DSTextNode::Center:
                break;
            }

            switch (text3DS->verticalAlignment()) {
            case Q3DSTextNode::Top:
                textOffsetY = -textSize.height() * textScale.y();
                break;
            case Q3DSTextNode::Bottom:
                textOffsetY = textSize.height() * textScale.y();
                break;
            case Q3DSTextNode::Middle:
                break;
            }

            if (textOffsetX != 0 || textOffsetY != 0) {
                QVector3D pos = text3DS->position();
                QVector3D rot = text3DS->rotation();
                // Apply text rotation to the translation amount
                textOffsetX *= qCos(qDegreesToRadians(rot.y()));
                textOffsetY *= qCos(qDegreesToRadians(rot.x()));
                data->transform->setTranslation(QVector3D(pos.x() + textOffsetX,
                                                          pos.y() + textOffsetY,
                                                          pos.z()));
                updateGlobals(text3DS, UpdateGlobalsRecursively);
            }
#else
            if (data->textureImage->size() != sz)
                data->textureImage->setSize(sz); // this repaints, no need for update() afterwards
            else
                data->textureImage->update();
#endif
        }
    }
}

Qt3DCore::QEntity *Q3DSSceneManager::buildLight(Q3DSLightNode *light3DS, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    Q3DSLightAttached *data = new Q3DSLightAttached;
    light3DS->setAttached(data);

    Qt3DCore::QEntity *entity = new Qt3DCore::QEntity(parent);
    entity->setObjectName(QObject::tr("light %1").arg(QString::fromUtf8(light3DS->id())));
    initEntityForNode(entity, light3DS, layer3DS);

    setLightProperties(light3DS, true);

    data->propertyChangeObserverIndex = light3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = light3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    return entity;
}

void Q3DSSceneManager::setLightProperties(Q3DSLightNode *light3DS, bool forceUpdate)
{
    // only parameter setup, the uniform buffer is handled separately elsewhere

    Q3DSLightAttached *data = static_cast<Q3DSLightAttached *>(light3DS->attached());
    Q_ASSERT(data);

    // Instead of generating Qt3D light objects, do lighting on our own. The
    // two worlds (Qt3D / 3DS) are just not compatible.
    Q3DSLightSource *ls = &data->lightSource;
    const bool leftHanded = light3DS->orientation() == Q3DSNode::LeftHanded;

    if (forceUpdate || data->frameDirty.testFlag(Q3DSGraphObjectAttached::GlobalTransformDirty)) {
        if (!ls->positionParam) {
            ls->positionParam = new Qt3DRender::QParameter;
            ls->positionParam->setName(QLatin1String("position"));
        }

        if (light3DS->lightType() == Q3DSLightNode::Directional) {
            // directional lights have a w value of 0 in position
            // position is used for direction in the custom material shader
            // custom material shader also wants the inverse handedness
            ls->positionParam->setValue(QVector4D(directionFromTransform(data->globalTransform, !leftHanded), 0.0f));
        } else {
            // point and area lights have w value of not-zero in position
            ls->positionParam->setValue(QVector4D(data->globalTransform.column(3).toVector3D(), 1.0f));
        }

        if (!ls->directionParam) {
            ls->directionParam = new Qt3DRender::QParameter;
            ls->directionParam->setName(QLatin1String("direction"));
        }
        ls->directionParam->setValue(directionFromTransform(data->globalTransform, leftHanded));
    }

    if (!ls->upParam) {
        ls->upParam = new Qt3DRender::QParameter;
        ls->upParam->setName(QLatin1String("up"));
    }
    if (!ls->rightParam) {
        ls->rightParam = new Qt3DRender::QParameter;
        ls->rightParam->setName(QLatin1String("right"));
    }
    if (light3DS->lightType() == Q3DSLightNode::Area) {
        QVector4D v = data->globalTransform * QVector4D(0, 1, 0, 0);
        v.setW(light3DS->areaHeight());
        ls->upParam->setValue(v);
        v = data->globalTransform * QVector4D(1, 0, 0, 0);
        v.setW(light3DS->areaWidth());
        ls->rightParam->setValue(v);
    } else {
        ls->upParam->setValue(QVector4D());
        ls->rightParam->setValue(QVector4D());
    }

    const float normalizedBrightness = light3DS->brightness() / 100.0f;

    if (!ls->diffuseParam) {
        ls->diffuseParam = new Qt3DRender::QParameter;
        ls->diffuseParam->setName(QLatin1String("diffuse"));
    }
    auto diffuseColor = QVector4D(float(light3DS->diffuse().redF()) * normalizedBrightness,
                                  float(light3DS->diffuse().greenF()) * normalizedBrightness,
                                  float(light3DS->diffuse().blueF()) * normalizedBrightness,
                                  float(light3DS->diffuse().alphaF()));
    ls->diffuseParam->setValue(diffuseColor);

    if (!ls->ambientParam) {
        ls->ambientParam = new Qt3DRender::QParameter;
        ls->ambientParam->setName(QLatin1String("ambient"));
    }
    auto ambientColor = QVector4D(float(light3DS->ambient().redF()),
                                  float(light3DS->ambient().greenF()),
                                  float(light3DS->ambient().blueF()),
                                  float(light3DS->ambient().alphaF()));
    ls->ambientParam->setValue(ambientColor);

    if (!ls->specularParam) {
        ls->specularParam = new Qt3DRender::QParameter;
        ls->specularParam->setName(QLatin1String("specular"));
    }
    auto specularColor = QVector4D(float(light3DS->specular().redF()) * normalizedBrightness,
                                   float(light3DS->specular().greenF()) * normalizedBrightness,
                                   float(light3DS->specular().blueF()) * normalizedBrightness,
                                   float(light3DS->specular().alphaF()));
    ls->specularParam->setValue(specularColor);

/*
    if (!ls->spotExponentParam) {
        ls->spotExponentParam = new Qt3DRender::QParameter;
        ls->spotExponentParam->setName(QLatin1String("spotExponent"));
    }
    ls->spotExponentParam->setValue(1.0f);

    if (!ls->spotCutoffParam) {
        ls->spotCutoffParam = new Qt3DRender::QParameter;
        ls->spotCutoffParam->setName(QLatin1String("spotCutoff"));
    }
    ls->spotCutoffParam->setValue(180.0f);
*/
    if (!ls->constantAttenuationParam) {
        ls->constantAttenuationParam = new Qt3DRender::QParameter;
        ls->constantAttenuationParam->setName(QLatin1String("constantAttenuation"));
    }
    ls->constantAttenuationParam->setValue(1.0f);

    if (!ls->linearAttenuationParam) {
        ls->linearAttenuationParam = new Qt3DRender::QParameter;
        ls->linearAttenuationParam->setName(QLatin1String("linearAttenuation"));
    }
    ls->linearAttenuationParam->setValue(qBound(0.0f, light3DS->linearFade(), 1000.0f) * 0.0001f);

    if (!ls->quadraticAttenuationParam) {
        ls->quadraticAttenuationParam = new Qt3DRender::QParameter;
        ls->quadraticAttenuationParam->setName(QLatin1String("quadraticAttenuation"));
    }
    ls->quadraticAttenuationParam->setValue(qBound(0.0f, light3DS->expFade(), 1000.0f) * 0.0000001f);

    // having non-zero values in either width or hight properties
    // determines that this is an area light in shader logic
    if (!ls->widthParam) {
        ls->widthParam = new Qt3DRender::QParameter;
        ls->widthParam->setName(QLatin1String("width"));
    }
    if (light3DS->lightType() == Q3DSLightNode::Area)
        ls->widthParam->setValue(light3DS->areaWidth());
    else
        ls->widthParam->setValue(0.0f);

    if (!ls->heightParam) {
        ls->heightParam = new Qt3DRender::QParameter;
        ls->heightParam->setName(QLatin1String("height"));
    }
    if (light3DS->lightType() == Q3DSLightNode::Area)
        ls->heightParam->setValue(light3DS->areaHeight());
    else
        ls->heightParam->setValue(0.0f);

    // For custom materials. The default material does not use these as it
    // generates the shader code dynamically and can therefore rely on uniforms
    // named like shadowcube_<index> and shadowmap_<index>_control. Custom
    // materials cannot do this and will instead use the shadow control and
    // matrix from the lights array and use shadowIdx to index the array
    // uniforms for the samplers.
    if (!ls->shadowControlsParam) {
        ls->shadowControlsParam = new Qt3DRender::QParameter;
        ls->shadowControlsParam->setName(QLatin1String("shadowControls"));
    }
    ls->shadowControlsParam->setValue(QVector4D(light3DS->shadowBias(), light3DS->shadowFactor(), light3DS->shadowMapFar(), 0));

    if (!ls->shadowViewParam) {
        ls->shadowViewParam = new Qt3DRender::QParameter;
        ls->shadowViewParam->setName(QLatin1String("shadowView"));
    }
    if (light3DS->lightType() == Q3DSLightNode::Point)
        ls->shadowViewParam->setValue(QMatrix4x4());
    else
        ls->shadowViewParam->setValue(data->globalTransform);

    if (!ls->shadowIdxParam) {
        ls->shadowIdxParam = new Qt3DRender::QParameter;
        ls->shadowIdxParam->setName(QLatin1String("shadowIdx"));
        ls->shadowIdxParam->setValue(-1); // must be -1 for non-shadow-casting lights
    }
}

Qt3DCore::QEntity *Q3DSSceneManager::buildModel(Q3DSModelNode *model3DS, Q3DSLayerNode *layer3DS, Qt3DCore::QEntity *parent)
{
    Q3DSModelAttached *data = new Q3DSModelAttached;
    model3DS->setAttached(data);

    data->propertyChangeObserverIndex = model3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    data->eventObserverIndex = model3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));

    Qt3DCore::QEntity *entity = new Qt3DCore::QEntity(parent);
    entity->setObjectName(QObject::tr("model %1").arg(QString::fromUtf8(model3DS->id())));
    initEntityForNode(entity, model3DS, layer3DS);

    const MeshList meshList = model3DS->mesh();
    if (meshList.isEmpty()) // e.g. a default constructed Q3DSModelNode, do nothing else for now
        return entity;

    rebuildModelSubMeshes(model3DS);

    return entity;
}

void Q3DSSceneManager::rebuildModelSubMeshes(Q3DSModelNode *model3DS)
{
    Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());

    if (!modelData->subMeshes.isEmpty()) {
        for (const Q3DSModelAttached::SubMesh &sm : modelData->subMeshes)
            delete sm.entity;
        modelData->subMeshes.clear();
    }

    QVector<Q3DSGraphObject *> materials;
    Q3DSGraphObject *modelChild = model3DS->firstChild();
    while (modelChild) {
        if (modelChild->type() == Q3DSGraphObject::DefaultMaterial
                || modelChild->type() == Q3DSGraphObject::CustomMaterial
                || modelChild->type() == Q3DSGraphObject::ReferencedMaterial)
        {
            materials.append(modelChild);
        }
        modelChild = modelChild->nextSibling();
    }

    const MeshList meshList = model3DS->mesh();
    int meshCount = meshList.count();
    if (materials.count() != meshCount) {
        const int actualCount = qMin(meshCount, materials.count());
        qCDebug(lcScene, "Model %s has %d submeshes but %d materials, this is wrong. Creating %d submeshes.",
                model3DS->id().constData(),
                meshCount,
                materials.count(),
                actualCount);
        meshCount = actualCount;
    }
    modelData->subMeshes.reserve(meshCount);

    for (int i = 0; i < meshCount; ++i) {
        auto material = materials.at(i);
        auto mesh = meshList.at(i);
        // Now this is tricky. The presentation caches the meshes which means
        // we cannot just let the mesh to be parented to the entity (in the
        // addComponent). For now keep meshes alive by parenting them to
        // something else. May need something more sophisticated later
        // (reference counting? proper LRU cache behavior?).
        mesh->setParent(m_rootEntity);
        m_profiler->trackNewObject(mesh, Q3DSProfiler::MeshObject,
                                   "Mesh %d for model %s", model3DS->id(), i, model3DS->id().constData());

        Q3DSModelAttached::SubMesh sm;
        sm.mesh = mesh;
        sm.entity = new Qt3DCore::QEntity(modelData->entity);
        sm.entity->setObjectName(QObject::tr("model %1 submesh #%2").arg(QString::fromUtf8(model3DS->id())).arg(i));
        sm.entity->addComponent(mesh);
        sm.material = material;
        sm.resolvedMaterial = material;
        // follow the reference for ReferencedMaterial (which is more like a referencING material...)
        if (sm.material->type() == Q3DSGraphObject::ReferencedMaterial) {
            Q3DSReferencedMaterial *matRef = static_cast<Q3DSReferencedMaterial *>(sm.material);
            sm.referencingMaterial = matRef;
            // only if set (i.e. non-null), keep pointing to itself otherwise
            // (resolvedMaterial must not be null no matter what)
            if (matRef->referencedMaterial())
                sm.resolvedMaterial = matRef->referencedMaterial();
        }
        // leave sm.materialComponent unset for now -> defer until the scene is processed once and so all lights are known
        modelData->subMeshes.append(sm);
    }

    // update submesh entities wrt opaque vs transparent
    retagSubMeshes(model3DS);
}

static void addShadowSsaoParams(Q3DSLayerAttached *layerData, QVector<Qt3DRender::QParameter *> *params, bool isCustomMaterial)
{
    for (const Q3DSLayerAttached::PerLightShadowMapData &sd : qAsConst(layerData->shadowMapData.shadowCasters)) {
        if (!isCustomMaterial) {
            if (sd.materialParams.shadowSampler)
                params->append(sd.materialParams.shadowSampler);
            if (sd.materialParams.shadowMatrixParam)
                params->append(sd.materialParams.shadowMatrixParam);
            if (sd.materialParams.shadowControlParam)
                params->append(sd.materialParams.shadowControlParam);
        }
    }

    if (layerData->ssaoTextureData.enabled && layerData->ssaoTextureData.ssaoTextureSampler)
        params->append(layerData->ssaoTextureData.ssaoTextureSampler);

    if (isCustomMaterial) {
        if (layerData->shadowMapData.custMatParams.numShadowCubesParam)
            params->append(layerData->shadowMapData.custMatParams.numShadowCubesParam);
        if (layerData->shadowMapData.custMatParams.numShadowMapsParam)
            params->append(layerData->shadowMapData.custMatParams.numShadowMapsParam);
        if (layerData->shadowMapData.custMatParams.shadowMapSamplersParam)
            params->append(layerData->shadowMapData.custMatParams.shadowMapSamplersParam);
        if (layerData->shadowMapData.custMatParams.shadowCubeSamplersParam)
            params->append(layerData->shadowMapData.custMatParams.shadowCubeSamplersParam);
    }
}

void Q3DSSceneManager::buildModelMaterial(Q3DSModelNode *model3DS)
{
    // Scene building phase 2: all lights are known -> generate actual Qt3D materials
    Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());
    if (!modelData)
        return;

    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(modelData->layer3DS->attached());
    Q_ASSERT(layerData);

    QVector<Q3DSNodeAttached::LightsData *> lights = getLightsDataForNode(model3DS);

    // The first node in the list is current scope lightData
    Q3DSNodeAttached::LightsData *lightsData = nullptr;
    if (!lights.isEmpty())
        lightsData = lights.first();

    // Get a full list of light nodes covered by the current scope
    QVector<Q3DSLightNode *> lightNodes;
    for (auto light : lights)
        lightNodes.append(light->lightNodes);

    if (lightNodes.count() > m_gfxLimits.maxLightsPerLayer) {
        qCWarning(lcPerf, "Default material for model %s got %d lights, shader input truncated to %d",
                  model3DS->id().constData(), lightNodes.count(), m_gfxLimits.maxLightsPerLayer);
        // This is what the shader generator will see so truncate this. That
        // some calculations below may still use all the lights does not
        // matters so much.
        lightNodes.resize(m_gfxLimits.maxLightsPerLayer);
    }
    for (Q3DSModelAttached::SubMesh &sm : modelData->subMeshes) {
        if (sm.resolvedMaterial && !sm.materialComponent && sm.resolvedMaterial->type() != Q3DSGraphObject::ReferencedMaterial) {
            Q_ASSERT(sm.resolvedMaterial->attached());
            if (sm.resolvedMaterial->type() == Q3DSGraphObject::DefaultMaterial) {
                Q3DSDefaultMaterial *defaultMaterial = static_cast<Q3DSDefaultMaterial *>(sm.resolvedMaterial);

                // Create parameters to the shader.
                QVector<Qt3DRender::QParameter *> params = prepareDefaultMaterial(defaultMaterial, sm.referencingMaterial, model3DS);

                // Update parameter values.
                Q3DSDefaultMaterialAttached *defMatData = static_cast<Q3DSDefaultMaterialAttached *>(defaultMaterial->attached());
                const float opacity = clampOpacity(modelData->globalOpacity * (defaultMaterial->opacity() / 100.0f));
                defMatData->perModelData[model3DS].combinedOpacity = opacity;
                updateDefaultMaterial(defaultMaterial, sm.referencingMaterial, model3DS);

                // Setup camera properties
                if (layerData->cameraPropertiesParam != nullptr)
                    params.append(layerData->cameraPropertiesParam);

                // Setup ambient light total

                if (lightsData) {
                    updateLightsParams(lights, lightsData);
                    params.append(lightsData->lightAmbientTotalParamenter);

                    if (!m_gfxLimits.useGles2Path) {
                        // Setup lights, use combined buffer for the default material.
                        if (!lightsData->allLightsConstantBuffer) {
                            lightsData->allLightsConstantBuffer = new Qt3DRender::QBuffer(layerData->entity);
                            lightsData->allLightsConstantBuffer->setObjectName(QLatin1String("all lights constant buffer"));
                            // make sure we pick up all inherited lights in scope
                            QVector<Q3DSLightSource> allLights;
                            for (auto light : lights)
                                allLights.append(light->allLights);
                            updateLightsBuffer(allLights, lightsData->allLightsConstantBuffer);
                        }
                        if (!lightsData->allLightsParam)
                            lightsData->allLightsParam = new Qt3DRender::QParameter;
                        lightsData->allLightsParam->setName(QLatin1String("cbBufferLights"));
                        lightsData->allLightsParam->setValue(QVariant::fromValue(lightsData->allLightsConstantBuffer));
                        params.append(lightsData->allLightsParam);
                    } else {
                        // ubo not supported, create uniforms for each light
                        params.append(prepareSeparateLightUniforms(lightsData->allLights, QStringLiteral("qLights")));
                    }
                }

                addShadowSsaoParams(layerData, &params, false);

                // Setup light probe parameters
                if (defMatData->lightProbeOverrideTexture || modelData->layer3DS->lightProbe()) {
                    // Always include probe properties
                    params.append(layerData->iblProbeData.lightProbeProperties);
                    params.append(layerData->iblProbeData.lightProbe2Properties);
                    params.append(layerData->iblProbeData.lightProbeOptions);

                    if (!defMatData->lightProbeOverrideTexture) {
                        // There is no override (so provide everything)
                        params.append(layerData->iblProbeData.lightProbeSampler);
                        params.append(layerData->iblProbeData.lightProbeOffset);
                        params.append(layerData->iblProbeData.lightProbeRotation);
                    } else {
                        params.append(defMatData->lightProbeSampler);
                        params.append(defMatData->lightProbeOffset);
                        params.append(defMatData->lightProbeRotation);
                    }

                    if (modelData->layer3DS->lightProbe2()) {
                        params.append(layerData->iblProbeData.lightProbe2Sampler);
                    }
                }

                // Do not let the QMaterial own the (potentially not yet
                // parented) QParameters. Parent them to some other QNode. This
                // is important here due to rebuildModelMaterial() where
                // sm.materialComponent may get destroyed afterwards.
                for (Qt3DRender::QParameter *param : params) {
                    // sm.entity is not suitable either since nodes and so their entities may come and go
                    param->setParent(layerData->entity);
                }

                sm.materialComponent = m_matGen->generateMaterial(m_pairs, defaultMaterial, sm.referencingMaterial, params, lightNodes, modelData->layer3DS);
                sm.entity->addComponent(sm.materialComponent);
            } else if (sm.resolvedMaterial->type() == Q3DSGraphObject::CustomMaterial) {
                Q3DSCustomMaterialInstance *customMaterial = static_cast<Q3DSCustomMaterialInstance *>(sm.resolvedMaterial);
                QVector<Qt3DRender::QParameter *> params = prepareCustomMaterial(customMaterial, sm.referencingMaterial, model3DS);
                Q3DSCustomMaterialAttached *custMatData = static_cast<Q3DSCustomMaterialAttached *>(customMaterial->attached());
                custMatData->perModelData[model3DS].combinedOpacity = modelData->globalOpacity;
                updateCustomMaterial(customMaterial, sm.referencingMaterial, model3DS);

                if (lightsData) {
                    if (!m_gfxLimits.useGles2Path) {
                        // Here lights are provided in two separate buffers.
                        if (!lightsData->nonAreaLightsConstantBuffer) {
                            lightsData->nonAreaLightsConstantBuffer = new Qt3DRender::QBuffer(layerData->entity);
                            lightsData->nonAreaLightsConstantBuffer->setObjectName(QLatin1String("non-area lights constant buffer"));
                            QVector<Q3DSLightSource> nonAreaLights;
                            for (auto light : lights)
                                nonAreaLights.append(light->nonAreaLights);
                            updateLightsBuffer(nonAreaLights, lightsData->nonAreaLightsConstantBuffer);
                        }
                        if (!lightsData->nonAreaLightsParam)
                            lightsData->nonAreaLightsParam = new Qt3DRender::QParameter;
                        lightsData->nonAreaLightsParam->setName(QLatin1String("cbBufferLights")); // i.e. this cannot be combined with allLightsParam
                        lightsData->nonAreaLightsParam->setValue(QVariant::fromValue(lightsData->nonAreaLightsConstantBuffer));
                        params.append(lightsData->nonAreaLightsParam);

                        if (!lightsData->areaLightsConstantBuffer) {
                            lightsData->areaLightsConstantBuffer = new Qt3DRender::QBuffer(layerData->entity);
                            lightsData->areaLightsConstantBuffer->setObjectName(QLatin1String("area lights constant buffer"));
                            QVector<Q3DSLightSource> areaLights;
                            for (auto light : lights)
                                areaLights.append(light->areaLights);
                            updateLightsBuffer(areaLights, lightsData->areaLightsConstantBuffer);
                        }
                        if (!lightsData->areaLightsParam)
                            lightsData->areaLightsParam = new Qt3DRender::QParameter;
                        lightsData->areaLightsParam->setName(QLatin1String("cbBufferAreaLights"));
                        lightsData->areaLightsParam->setValue(QVariant::fromValue(lightsData->areaLightsConstantBuffer));
                        params.append(lightsData->areaLightsParam);
                    } else {
                        // ubo not supported, create uniforms for each light
                        params.append(prepareSeparateLightUniforms(lightsData->nonAreaLights, QStringLiteral("qLights")));
                        params.append(prepareSeparateLightUniforms(lightsData->areaLights, QStringLiteral("areaLights")));
                    }
                }

                addShadowSsaoParams(layerData, &params, true);

                // Setup light probe parameters
                if (custMatData->lightProbeOverrideTexture || modelData->layer3DS->lightProbe()) {
                    // Always include probe properties
                    params.append(layerData->iblProbeData.lightProbeProperties);
                    params.append(layerData->iblProbeData.lightProbe2Properties);
                    params.append(layerData->iblProbeData.lightProbeOptions);

                    if (!custMatData->lightProbeOverrideTexture) {
                        // There is no override (so provide everything)
                        params.append(layerData->iblProbeData.lightProbeSampler);
                        params.append(layerData->iblProbeData.lightProbeOffset);
                        params.append(layerData->iblProbeData.lightProbeRotation);
                    } else {
                        params.append(custMatData->lightProbeSampler);
                        params.append(custMatData->lightProbeOffset);
                        params.append(custMatData->lightProbeRotation);
                    }

                    if (modelData->layer3DS->lightProbe2()) {
                        params.append(layerData->iblProbeData.lightProbe2Sampler);
                    }
                }

                // Like for the default material, be careful with the parent.
                for (Qt3DRender::QParameter *param : params) {
                    // sm.entity is not suitable either since nodes and so their entities may come and go
                    param->setParent(layerData->entity);
                }

                const QVector<Q3DSMaterial::Pass> &passes(customMaterial->material()->passes());
                if (!passes.isEmpty()) {
                    // ### TODO support more than one pass
                    auto pass = passes.first();
                    bool gles = m_gfxLimits.format.renderableType() == QSurfaceFormat::OpenGLES;
                    sm.materialComponent = m_customMaterialGen->generateMaterial(m_pairs, customMaterial, sm.referencingMaterial, params, lightNodes, modelData->layer3DS, pass, gles);
                } else {
                    qCDebug(lcScene, "Custom material %s has no passes. Using dummy material. Object %s will not show.",
                            customMaterial->id().constData(), model3DS->id().constData());
                    sm.materialComponent = new Qt3DRender::QMaterial;
                }
                sm.entity->addComponent(sm.materialComponent);
            }
        }
    }
}

void Q3DSSceneManager::rebuildModelMaterial(Q3DSModelNode *model3DS)
{
    // After the initial phase 2 of scene building, materials will sometimes
    // need to be recreated due to certain property changes (shadow casters, SSAO).

    Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());
    if (!modelData)
        return;

    for (Q3DSModelAttached::SubMesh &sm : modelData->subMeshes) {
        if (sm.resolvedMaterial && sm.materialComponent) {
            qCDebug(lcPerf, "Rebuilding material for %s (entity %p)", model3DS->id().constData(), sm.entity);

            delete sm.materialComponent;
            sm.materialComponent = nullptr;
        }
    }

    buildModelMaterial(model3DS);
}

bool Q3DSSceneManager::checkImageTransparency(Q3DSImage *image) const
{
    if (image) {
        return image->hasTransparency(m_presentation)
                || !image->subPresentation().isEmpty();
    }
    return false;
}

void Q3DSSceneManager::retagSubMeshes(Q3DSModelNode *model3DS)
{
    Q3DSModelAttached *data = static_cast<Q3DSModelAttached *>(model3DS->attached());
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(data->layer3DS->attached());

    Q3DSProfiler::SubMeshData profData;
    for (Q3DSModelAttached::SubMesh &sm : data->subMeshes) {
        float opacity = data->globalOpacity;
        bool hasTransparency = false;
        // Note: cannot rely on sm.resolvedMaterial->attached() since it may
        // not yet be created. This is not a problem in practice.
        if (sm.resolvedMaterial->type() == Q3DSGraphObject::DefaultMaterial) {
            auto defaultMaterial = static_cast<Q3DSDefaultMaterial *>(sm.resolvedMaterial);
            opacity = clampOpacity(opacity * defaultMaterial->opacity() / 100.0f);
            // Check maps for transparency as well
            hasTransparency =  (checkImageTransparency(defaultMaterial->diffuseMap()) ||
                               checkImageTransparency(defaultMaterial->diffuseMap2()) ||
                               checkImageTransparency(defaultMaterial->diffuseMap3()) ||
                               defaultMaterial->opacityMap() ||
                               defaultMaterial->translucencyMap() ||
                               defaultMaterial->displacementMap() ||
                               defaultMaterial->blendMode() != Q3DSDefaultMaterial::Normal);
            sm.hasTransparency = opacity < 1.0f || hasTransparency;
        } else if (sm.resolvedMaterial->type() == Q3DSGraphObject::CustomMaterial) {
            auto customMaterial = static_cast<Q3DSCustomMaterialInstance *>(sm.resolvedMaterial);
            const Q3DSCustomMaterial *matDesc = customMaterial->material();
            sm.hasTransparency = opacity < 1.0f || matDesc->materialHasTransparency() || matDesc->materialHasRefraction();
        }

        if (data->globalEffectiveVisibility) {
            Qt3DRender::QLayer *newTag = sm.hasTransparency ? layerData->eyeMono->transparentTag : layerData->eyeMono->opaqueTag;
            if (!sm.entity->components().contains(newTag)) {
                Qt3DRender::QLayer *prevTag = newTag == layerData->eyeMono->transparentTag ? layerData->eyeMono->opaqueTag : layerData->eyeMono->transparentTag;
                sm.entity->removeComponent(prevTag);
                sm.entity->addComponent(newTag);
            }
            Qt3DRender::QLayer *newTagLeft = sm.hasTransparency ? layerData->eyeLeft->transparentTag : layerData->eyeLeft->opaqueTag;
            if (!sm.entity->components().contains(newTagLeft)) {
                Qt3DRender::QLayer *prevTagLeft = newTagLeft == layerData->eyeLeft->transparentTag ? layerData->eyeLeft->opaqueTag : layerData->eyeLeft->transparentTag;
                sm.entity->removeComponent(prevTagLeft);
                sm.entity->addComponent(newTagLeft);
            }
            Qt3DRender::QLayer *newTagRight = sm.hasTransparency ? layerData->eyeRight->transparentTag : layerData->eyeRight->opaqueTag;
            if (!sm.entity->components().contains(newTagRight)) {
                Qt3DRender::QLayer *prevTagRight = newTagRight == layerData->eyeRight->transparentTag ? layerData->eyeRight->opaqueTag : layerData->eyeRight->transparentTag;
                sm.entity->removeComponent(prevTagRight);
                sm.entity->addComponent(newTagRight);
            }
        }

        profData.needsBlending = sm.hasTransparency;
        m_profiler->reportSubMeshData(sm.mesh, profData);
    }
}

void Q3DSSceneManager::prepareTextureParameters(Q3DSTextureParameters &textureParameters, const QString &name, Q3DSImage *image3DS)
{
    if (!image3DS->attached()) {
        qCDebug(lcScene, "Image %s is not initialized, is it added to the scene? Expect bad things to happen.",
                image3DS->id().constData());
    }

    textureParameters.sampler = new Qt3DRender::QParameter;
    textureParameters.sampler->setName(name + QLatin1String("_sampler"));

    textureParameters.offsets = new Qt3DRender::QParameter;
    textureParameters.offsets->setName(name + QLatin1String("_offsets"));

    textureParameters.rotations = new Qt3DRender::QParameter;
    textureParameters.rotations->setName(name + QLatin1String("_rotations"));

    textureParameters.size = new Qt3DRender::QParameter;
    textureParameters.size->setName(name + QLatin1String("_size"));
}

void Q3DSSceneManager::updateTextureParameters(Q3DSTextureParameters &textureParameters, Q3DSImage *image)
{
    // note that this function is called frequently (whenever any Image parameter changes)

    auto setupTexture = [](Q3DSTextureParameters &textureParameters, Q3DSImage *image) {
        Qt3DRender::QTextureWrapMode wrapMode;
        switch (image->horizontalTiling()) {
        case Q3DSImage::Tiled:
            wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
            break;
        case Q3DSImage::Mirrored:
            wrapMode.setX(Qt3DRender::QTextureWrapMode::MirroredRepeat);
            break;
        default:
            wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
            break;
        }
        switch (image->verticalTiling()) {
        case Q3DSImage::Tiled:
            wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
            break;
        case Q3DSImage::Mirrored:
            wrapMode.setY(Qt3DRender::QTextureWrapMode::MirroredRepeat);
            break;
        default:
            wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
            break;
        }

        Qt3DRender::QAbstractTexture *texture
                = textureParameters.sampler->value().value<Qt3DRender::QAbstractTexture *>();
        Q_ASSERT(texture || !image->subPresentation().isEmpty());
        if (!texture)
            return;

        texture->setWrapMode(wrapMode);
        // min/mag are already set at this point

        const QMatrix4x4 &textureTransform = image->textureTransform();
        const float *m = textureTransform.constData();

        QVector3D offsets(m[12], m[13], image->hasPremultipliedAlpha() ? 1 : 0);
        textureParameters.offsets->setValue(offsets);

        QVector4D rotations(m[0], m[4], m[1], m[5]);
        textureParameters.rotations->setValue(rotations);
        const QSize size = Q3DSImageManager::instance().size(texture);
        textureParameters.size->setValue(QVector2D(size.width(), size.height()));
    };

    if (!image->subPresentation().isEmpty()) {
        if (textureParameters.subPresId != image->subPresentation()) {
            textureParameters.subPresId = image->subPresentation();
            // won't yet have the subpresentations if this is still during the building of the main one
            if (m_subPresentations.isEmpty()) {
                textureParameters.sampler->setValue(QVariant::fromValue(dummyTexture(image->id())));
                m_pendingSubPresImages.append(qMakePair(textureParameters.sampler, image));
            } else {
                setImageTextureFromSubPresentation(textureParameters.sampler, image);
            }
        }
        setupTexture(textureParameters, image);
    } else if (!image->sourcePath().isEmpty()) {
        if (!textureParameters.textureSource) {
            textureParameters.textureSource
                    = Q3DSImageManager::instance().newReloadableTextureForImage(
                            m_rootEntity, 0, image->id(), m_profiler, "Texture for image %s",
                            image->id().constData());
        }
        textureParameters.textureSource->setSource(m_presentation->imageUrl(image->sourcePath()));
        textureParameters.textureSource->onLoad(
                    [setupTexture](Qt3DRender::QAbstractTexture *texture,
                                   Q3DSTextureParameters *param, Q3DSImage *image) {
            param->sampler->setValue(QVariant::fromValue(texture));
            setupTexture(*param, image);
        }, &textureParameters, image);
        textureParameters.textureSource->onUnload([](Qt3DRender::QAbstractTexture *texture,
                                                     Q3DSTextureParameters *param) {
            Q_UNUSED(texture);
            param->sampler->setValue({});
            param->offsets->setValue({});
            param->rotations->setValue({});
            param->size->setValue({});
        }, &textureParameters);
    } else if (!image->customImage().isNull()) {
        textureParameters.texture
                = Q3DSImageManager::instance().newTextureForImage(m_rootEntity, 0, image->id(),
                   m_profiler, QStringLiteral("Texture for image %1").arg(image->id().constData()));
        Q3DSImageManager::instance().setSource(textureParameters.texture, image->customImage());
        textureParameters.sampler->setValue(QVariant::fromValue(textureParameters.texture));
        setupTexture(textureParameters, image);
    } else {
        textureParameters.sampler->setValue(QVariant::fromValue(dummyTexture(image->id())));
        setupTexture(textureParameters, image);
    }
}

void Q3DSSceneManager::setImageTextureFromSubPresentation(Qt3DRender::QParameter *sampler, Q3DSImage *image)
{
    auto it = std::find_if(m_subPresentations.begin(), m_subPresentations.end(),
                           [image](const Q3DSSubPresentation &sp) { return sp.id == image->subPresentation(); });
    if (it != m_subPresentations.cend()) {
        auto handleSubpresentation = [this](
                Q3DSSubPresentation *sp, Qt3DRender::QParameter *sampler, Q3DSImage *image) {
            qCDebug(lcScene, "Directing subpresentation %s to image %s",
                    qPrintable(image->subPresentation()), image->id().constData());
            sampler->setValue(QVariant::fromValue(sp->colorTex));
            qCDebug(lcPerf, "Using a subpresentation as texture map (not as layer) makes layer caching in main presentation less efficient");
            // QML subpresentations will not have a scenemanager
            if (sp->sceneManager)
                m_layerCacheDeps.insert(sp->sceneManager);
            else
                m_hasQmlSubPresAsTextureMap = true;
        };
        if (!it->colorTex) {
            if (isAsyncSubpresentationLoadingEnabled()) {
                m_engine->loadSubUipPresentation(image->subPresentation(),
                                                 [this, handleSubpresentation]
                                                 (Q3DSSubPresentation *sp,
                                                 Qt3DRender::QParameter *sampler,
                                                 Q3DSImage *image) {
                    finalizeSubpresentationLoading(sp);
                    handleSubpresentation(sp, sampler, image);
                }, sampler, image);
            } else {
                *it = m_engine->loadSubUipPresentation(image->subPresentation());
                finalizeSubpresentationLoading(it);
                handleSubpresentation(it, sampler, image);
            }
        } else {
            handleSubpresentation(it, sampler, image);
        }
    } else {
        qCDebug(lcScene, "Subpresentation %s for image %s not found",
                qPrintable(image->subPresentation()), image->id().constData());
        sampler->setValue(QVariant::fromValue(dummyTexture(image->id())));
    }
}

QVector<Qt3DRender::QParameter *> Q3DSSceneManager::prepareDefaultMaterial(Q3DSDefaultMaterial *m, Q3DSReferencedMaterial *rm, Q3DSModelNode *model3DS)
{
    // This function can be called more than once for the same 'm' (with a
    // different 'model3DS' each time). The returned QParameter list must be
    // complete in any case, but returning QParameters that were returned
    // before for a different model3DS is fine.

    Q3DSDefaultMaterialAttached *data = static_cast<Q3DSDefaultMaterialAttached *>(m->attached());
    const bool firstRun = !data->prepared;
    if (firstRun)
        data->prepared = true;

    Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());
    QVector<Qt3DRender::QParameter *> params;

    if (firstRun)
        data->entity = modelData->entity;

    if (firstRun) {
        data->diffuseParam = new Qt3DRender::QParameter;
        data->diffuseParam->setName(QLatin1String("diffuse_color"));
    }
    params.append(data->diffuseParam);

    Q3DSMaterialAttached::PerModelData md;
    md.materialDiffuseParam = new Qt3DRender::QParameter;
    md.materialDiffuseParam->setName(QLatin1String("material_diffuse"));
    data->perModelData.insert(model3DS, md);
    params.append(md.materialDiffuseParam);
    data->perModelData.insert(model3DS, md);

    if (firstRun) {
        data->specularParam = new Qt3DRender::QParameter;
        data->specularParam->setName(QLatin1String("material_specular"));
    }
    params.append(data->specularParam);

    if (firstRun) {
        data->fresnelPowerParam = new Qt3DRender::QParameter;
        data->fresnelPowerParam->setName(QLatin1String("fresnelPower"));
    }
    params.append(data->fresnelPowerParam);

    if (firstRun) {
        data->bumpAmountParam = new Qt3DRender::QParameter;
        data->bumpAmountParam->setName(QLatin1String("bumpAmount"));
    }
    params.append(data->bumpAmountParam);

    if (firstRun) {
        data->materialPropertiesParam = new Qt3DRender::QParameter;
        data->materialPropertiesParam->setName(QLatin1String("material_properties"));
    }
    params.append(data->materialPropertiesParam);

    if (firstRun) {
        data->translucentFalloffParam = new Qt3DRender::QParameter;
        data->translucentFalloffParam->setName(QLatin1String("translucentFalloff"));
    }
    params.append(data->translucentFalloffParam);

    if (firstRun) {
        data->diffuseLightWrapParam = new Qt3DRender::QParameter;
        data->diffuseLightWrapParam->setName(QLatin1String("diffuseLightWrap"));
    }
    params.append(data->diffuseLightWrapParam);

    if (firstRun) {
        data->displaceAmountParam = new Qt3DRender::QParameter;
        data->displaceAmountParam->setName(QLatin1String("displaceAmount"));
    }
    params.append(data->displaceAmountParam);

    if (m->diffuseMap()) {
        if (firstRun) {
            prepareTextureParameters(data->diffuseMapParams, QLatin1String("diffuseMap"), m->diffuseMap());
            static_cast<Q3DSImageAttached *>(m->diffuseMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->diffuseMapParams.parameters());
    }

    if (m->diffuseMap2()) {
        if (firstRun) {
            prepareTextureParameters(data->diffuseMap2Params, QLatin1String("diffuseMap2"), m->diffuseMap2());
            static_cast<Q3DSImageAttached *>(m->diffuseMap2()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->diffuseMap2Params.parameters());
    }

    if (m->diffuseMap3()) {
        if (firstRun) {
            prepareTextureParameters(data->diffuseMap3Params, QLatin1String("diffuseMap3"), m->diffuseMap3());
            static_cast<Q3DSImageAttached *>(m->diffuseMap3()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->diffuseMap3Params.parameters());
    }

    if (m->specularReflection()) {
        if (firstRun) {
            prepareTextureParameters(data->specularReflectionParams, QLatin1String("specularreflection"), m->specularReflection());
            static_cast<Q3DSImageAttached *>(m->specularReflection()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->specularReflectionParams.parameters());
    }

    if (m->specularMap()) {
        if (firstRun) {
            prepareTextureParameters(data->specularMapParams, QLatin1String("specularMap"), m->specularMap());
            static_cast<Q3DSImageAttached *>(m->specularMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->specularMapParams.parameters());
    }

    if (m->roughnessMap()) {
        if (firstRun) {
            prepareTextureParameters(data->roughnessMapParams, QLatin1String("roughnessMap"), m->roughnessMap());
            static_cast<Q3DSImageAttached *>(m->roughnessMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->roughnessMapParams.parameters());
    }

    if (m->bumpMap()) {
        if (firstRun) {
            prepareTextureParameters(data->bumpMapParams, QLatin1String("bumpMap"), m->bumpMap());
            static_cast<Q3DSImageAttached *>(m->bumpMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->bumpMapParams.parameters());
    }

    if (m->normalMap()) {
        if (firstRun) {
            prepareTextureParameters(data->normalMapParams, QLatin1String("normalMap"), m->normalMap());
            static_cast<Q3DSImageAttached *>(m->normalMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->normalMapParams.parameters());
    }

    if (m->displacementMap()) {
        if (firstRun) {
            prepareTextureParameters(data->displacementMapParams, QLatin1String("displacementMap"), m->displacementMap());
            static_cast<Q3DSImageAttached *>(m->displacementMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->displacementMapParams.parameters());
    }

    if (m->opacityMap()) {
        if (firstRun) {
            prepareTextureParameters(data->opacityMapParams, QLatin1String("opacityMap"), m->opacityMap());
            static_cast<Q3DSImageAttached *>(m->opacityMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->opacityMapParams.parameters());
    }

    if (m->emissiveMap()) {
        if (firstRun) {
            prepareTextureParameters(data->emissiveMapParams, QLatin1String("emissiveMap"), m->emissiveMap());
            static_cast<Q3DSImageAttached *>(m->emissiveMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->emissiveMapParams.parameters());
    }

    if (m->emissiveMap2()) {
        if (firstRun) {
            prepareTextureParameters(data->emissiveMap2Params, QLatin1String("emissiveMap2"), m->emissiveMap2());
            static_cast<Q3DSImageAttached *>(m->emissiveMap2()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->emissiveMap2Params.parameters());
    }

    if (m->translucencyMap()) {
        if (firstRun) {
            prepareTextureParameters(data->translucencyMapParams, QLatin1String("translucencyMap"), m->translucencyMap());
            static_cast<Q3DSImageAttached *>(m->translucencyMap()->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->translucencyMapParams.parameters());
    }

    // Lightmaps
    // check for referencedMaterial Overrides
    // Note all the below must ignore firstRun since there's nothing saying the
    // first call for a certain 'm' is the one with rm != null.
    Q3DSImage *lightmapIndirect = nullptr;
    if (rm && rm->lightmapIndirectMap())
        lightmapIndirect = rm->lightmapIndirectMap();
    else if (m->lightmapIndirectMap())
        lightmapIndirect = m->lightmapIndirectMap();
    if (lightmapIndirect) {
        if (!data->lightmapIndirectParams.sampler) {
            prepareTextureParameters(data->lightmapIndirectParams, QLatin1String("lightmapIndirect"), lightmapIndirect);
            static_cast<Q3DSImageAttached *>(lightmapIndirect->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->lightmapIndirectParams.parameters());
    }

    Q3DSImage *lightmapRadiosity = nullptr;
    if (rm && rm->lightmapRadiosityMap())
        lightmapRadiosity = rm->lightmapRadiosityMap();
    else if (m->lightmapRadiosityMap())
        lightmapRadiosity = m->lightmapRadiosityMap();
    if (lightmapRadiosity) {
        if (!data->lightmapRadiosityParams.sampler) {
            prepareTextureParameters(data->lightmapRadiosityParams, QLatin1String("lightmapRadiosity"), lightmapRadiosity);
            static_cast<Q3DSImageAttached *>(lightmapRadiosity->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->lightmapRadiosityParams.parameters());
    }

    Q3DSImage *lightmapShadow = nullptr;
    if (rm && rm->lightmapShadowMap())
        lightmapShadow = rm->lightmapShadowMap();
    else if (m->lightmapShadowMap())
        lightmapShadow = m->lightmapShadowMap();
    if (lightmapShadow) {
        if (!data->lightmapShadowParams.sampler) {
            prepareTextureParameters(data->lightmapShadowParams, QLatin1String("lightmapShadow"), lightmapShadow);
            static_cast<Q3DSImageAttached *>(lightmapShadow->attached())->referencingDefaultMaterials.insert(m);
        }
        params.append(data->lightmapShadowParams.parameters());
    }

    // IBL
    Q3DSImage *iblOverrideImage = nullptr;
    if (rm && rm->lightProbe())
        iblOverrideImage = rm->lightProbe();
    else if (m->lightProbe())
        iblOverrideImage = m->lightProbe();
    if (iblOverrideImage) {
        if (!data->lightProbeOverrideTexture) {
            data->lightProbeOverrideTexture
                    = Q3DSImageManager::instance().newReloadableTextureForImage(
                        m_rootEntity, Q3DSImageManager::GenerateMipMapsForIBL,
                        iblOverrideImage->id(), m_profiler,
                        "Texture for image %s", iblOverrideImage->id().constData());
            data->lightProbeSampler = new Qt3DRender::QParameter;
            data->lightProbeSampler->setName(QLatin1String("light_probe"));

            data->lightProbeRotation = new Qt3DRender::QParameter;
            data->lightProbeRotation->setName(QLatin1String("light_probe_rotation"));

            data->lightProbeOffset = new Qt3DRender::QParameter;
            data->lightProbeOffset->setName(QLatin1String("light_probe_offset"));
        }
        params.append(data->lightProbeSampler);
        params.append(data->lightProbeRotation);
        params.append(data->lightProbeOffset);
    }

    return params;
}

void Q3DSSceneManager::updateDefaultMaterial(Q3DSDefaultMaterial *m, Q3DSReferencedMaterial *rm, Q3DSModelNode *model3DS)
{
    // This function is typically called in a loop for each Q3DSModelNode that
    // shares the same Q3DSDefaultMaterial. Having more than one model can only
    // happen when a ReferencedMaterial is used. Currently we are somewhat
    // wasteful in this case since setting the QParameter values over and over
    // again is not really needed, with the exception of the one model-specific
    // one. We'll live with this for the time being.

    Q3DSDefaultMaterialAttached *data = static_cast<Q3DSDefaultMaterialAttached *>(m->attached());
    Q_ASSERT(data && data->diffuseParam);

    data->diffuseParam->setValue(m->diffuse());

    float emissivePower = 1.0f;
    bool hasLighting = m->shaderLighting() != Q3DSDefaultMaterial::ShaderLighting::NoShaderLighting;
    if (hasLighting)
        emissivePower = m->emissivePower() / 100.0f;

    // This one depends on the combinedOpacity which depends on the
    // localOpacity from the model. Hence its placement in the perModelData map.
    auto perModelDataIt = data->perModelData.find(model3DS);
    Q_ASSERT(perModelDataIt != data->perModelData.end());
    QVector4D material_diffuse(m->emissiveColor().redF() * emissivePower,
                               m->emissiveColor().greenF() * emissivePower,
                               m->emissiveColor().blueF() * emissivePower,
                               perModelDataIt->combinedOpacity);
    perModelDataIt->materialDiffuseParam->setValue(material_diffuse);

    QVector4D material_specular(m->specularTint().redF(),
                                m->specularTint().greenF(),
                                m->specularTint().blueF(),
                                m->ior());
    data->specularParam->setValue(material_specular);

    data->fresnelPowerParam->setValue(m->fresnelPower());

    data->bumpAmountParam->setValue(m->bumpAmount());

    data->translucentFalloffParam->setValue(m->translucentFalloff());

    data->diffuseLightWrapParam->setValue(m->diffuseLightWrap());

    data->displaceAmountParam->setValue(m->displaceAmount());

    auto materialProperties = QVector4D(m->specularAmount(),
                                        m->specularRoughness(),
                                        emissivePower,
                                        0.0f);
    data->materialPropertiesParam->setValue(materialProperties);

    if (m->diffuseMap())
        updateTextureParameters(data->diffuseMapParams, m->diffuseMap());

    if (m->diffuseMap2())
        updateTextureParameters(data->diffuseMap2Params, m->diffuseMap2());

    if (m->diffuseMap3())
        updateTextureParameters(data->diffuseMap3Params, m->diffuseMap3());

    if (m->specularReflection())
        updateTextureParameters(data->specularReflectionParams, m->specularReflection());

    if (m->specularMap())
        updateTextureParameters(data->specularMapParams, m->specularMap());

    if (m->roughnessMap())
        updateTextureParameters(data->roughnessMapParams, m->roughnessMap());

    if (m->bumpMap())
        updateTextureParameters(data->bumpMapParams, m->bumpMap());

    if (m->normalMap())
        updateTextureParameters(data->normalMapParams, m->normalMap());

    if (m->displacementMap())
        updateTextureParameters(data->displacementMapParams, m->displacementMap());

    if (m->opacityMap())
        updateTextureParameters(data->opacityMapParams, m->opacityMap());

    if (m->emissiveMap())
        updateTextureParameters(data->emissiveMapParams, m->emissiveMap());

    if (m->emissiveMap2())
        updateTextureParameters(data->emissiveMap2Params, m->emissiveMap2());

    if (m->translucencyMap())
        updateTextureParameters(data->translucencyMapParams, m->translucencyMap());

    // Lightmaps
    Q3DSImage *lightmapIndirect = nullptr;
    if (rm && rm->lightmapIndirectMap())
        lightmapIndirect = rm->lightmapIndirectMap();
    else if (m->lightmapIndirectMap())
        lightmapIndirect = m->lightmapIndirectMap();
    if (lightmapIndirect)
        updateTextureParameters(data->lightmapIndirectParams, lightmapIndirect);

    Q3DSImage *lightmapRadiosity = nullptr;
    if (rm && rm->lightmapRadiosityMap())
        lightmapRadiosity = rm->lightmapRadiosityMap();
    else if (m->lightmapRadiosityMap())
        lightmapRadiosity = m->lightmapRadiosityMap();
    if (lightmapRadiosity)
        updateTextureParameters(data->lightmapRadiosityParams, lightmapRadiosity);

    Q3DSImage *lightmapShadow = nullptr;
    if (rm && rm->lightmapShadowMap())
        lightmapShadow = rm->lightmapShadowMap();
    else if (m->lightmapShadowMap())
        lightmapShadow = m->lightmapShadowMap();
    if (lightmapShadow)
        updateTextureParameters(data->lightmapShadowParams, lightmapShadow);

    // IBL Override
    Q3DSImage *iblOverride = nullptr;
    if (rm && rm->lightProbe())
        iblOverride = rm->lightProbe();
    else if (m->lightProbe())
        iblOverride = m->lightProbe();

    // IBL
    if (iblOverride) {
        auto setupTexture = [](Qt3DRender::QAbstractTexture *texture,
                Q3DSDefaultMaterialAttached *data, Q3DSImage *iblOverride) {
            Qt3DRender::QTextureWrapMode wrapMode;

            switch (iblOverride->horizontalTiling()) {
            case Q3DSImage::Tiled:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
                break;
            case Q3DSImage::Mirrored:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                break;
            default:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
                break;
            }

            switch (iblOverride->verticalTiling()) {
            case Q3DSImage::Tiled:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
                break;
            case Q3DSImage::Mirrored:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                break;
            default:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
                break;
            }

            texture->setWrapMode(wrapMode);

            const QMatrix4x4 &textureTransform = iblOverride->textureTransform();
            const float *m = textureTransform.constData();

            // offsets.w = max mip level
            const QSize texSize = Q3DSImageManager::instance().size(texture);
            float mipLevels = float(qCeil(qLog2(qMax(texSize.width(), texSize.height()))));
            QVector4D offsets(m[12], m[13], 0.0f, mipLevels);
            data->lightProbeOffset->setValue(offsets);

            QVector4D rotations(m[0], m[4], m[1], m[5]);
            data->lightProbeRotation->setValue(rotations);
        };
        // also sets min/mag and generates mipmaps
        if (!iblOverride->subPresentation().isEmpty()) {
            if (m_subPresentations.isEmpty())
                m_pendingSubPresImages.append(qMakePair(data->lightProbeSampler, iblOverride));
            else
                setImageTextureFromSubPresentation(data->lightProbeSampler, iblOverride);
        } else {
            data->lightProbeOverrideTexture->setSource(
                        m_presentation->imageUrl(iblOverride->sourcePath()));
            data->lightProbeOverrideTexture->onLoad([setupTexture](
                                                    Qt3DRender::QAbstractTexture *texture,
                                                    Q3DSDefaultMaterialAttached *data,
                                                    Q3DSImage *iblOverride) {
                data->lightProbeSampler->setValue(QVariant::fromValue(texture));
                setupTexture(texture, data, iblOverride);
            }, data, iblOverride);
            data->lightProbeOverrideTexture->onUnload([](Qt3DRender::QAbstractTexture *texture,
                                                         Q3DSDefaultMaterialAttached *data) {
                Q_UNUSED(texture);
                data->lightProbeSampler->setValue({});
                data->lightProbeOffset->setValue({});
                data->lightProbeRotation->setValue({});
            }, data);
        }
    }
}

typedef std::function<void(const QString &, const QVariant &, const Q3DSMaterial::PropertyElement &)> CustomPropertyCallback;

static void iterateCustomProperties(const QVariantMap &properties,
                                    const QMap<QString, Q3DSMaterial::PropertyElement> &propertiesMeta,
                                    CustomPropertyCallback callback)
{
    for (auto it = properties.cbegin(), itEnd = properties.cend(); it != itEnd; ++it) {
        const QString &propName(it.key());
        const QVariant &propValue(it.value());
        const Q3DSMaterial::PropertyElement &propMeta(propertiesMeta[propName]);
        callback(propName, propValue, propMeta);
    }
}

static inline void forAllCustomProperties(Q3DSCustomMaterialInstance *m, CustomPropertyCallback callback)
{
    iterateCustomProperties(m->dynamicProperties(), m->material()->properties(), callback);
}

static inline void forAllCustomProperties(Q3DSEffectInstance *eff3DS, CustomPropertyCallback callback)
{
    iterateCustomProperties(eff3DS->dynamicProperties(), eff3DS->effect()->properties(), callback);
}

void Q3DSSceneManager::createCustomPropertyTexture(Q3DSCustomPropertyParameter &p,
                                                   const QByteArray &id)
{
    // now override the defaults set in setSource() with whatever the metadata specifies
    auto setupTexture = [](Q3DSCustomPropertyParameter *p, Qt3DRender::QAbstractTexture *texture) {
        switch (p->meta.magFilterType) {
        case Q3DSMaterial::Nearest:
            texture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Nearest);
            break;
        default:
            texture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
            break;
        }

        switch (p->meta.minFilterType) {
        case Q3DSMaterial::Nearest:
            texture->setMinificationFilter(Qt3DRender::QAbstractTexture::Nearest);
            break;
        case Q3DSMaterial::Linear:
            texture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
            break;
        case Q3DSMaterial::NearestMipmapNearest:
            texture->setMinificationFilter(Qt3DRender::QAbstractTexture::NearestMipMapNearest);
            texture->setGenerateMipMaps(true);
            break;
        case Q3DSMaterial::NearestMipmapLinear:
            texture->setMinificationFilter(Qt3DRender::QAbstractTexture::NearestMipMapLinear);
            texture->setGenerateMipMaps(true);
            break;
        case Q3DSMaterial::LinearMipmapNearest:
            texture->setMinificationFilter(Qt3DRender::QAbstractTexture::LinearMipMapNearest);
            texture->setGenerateMipMaps(true);
            break;
        default:
            texture->setMinificationFilter(Qt3DRender::QAbstractTexture::LinearMipMapLinear);
            texture->setGenerateMipMaps(true);
            break;
        }

        Qt3DRender::QTextureWrapMode wrapMode;
        switch (p->meta.clampType) {
        case Q3DSMaterial::Repeat:
            wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
            wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
            break;
        default:
            wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
            wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
            break;
        }
        texture->setWrapMode(wrapMode);
    };

    const QString source = p.inputValue.toString();
    Qt3DRender::QAbstractTexture *texture;
    if (source.isEmpty()) {
        texture = dummyTexture(id);
        setupTexture(&p, texture);
        p.param->setValue(QVariant::fromValue(texture));
    } else {
        p.texture = Q3DSImageManager::instance().newReloadableTextureForImage(
                        m_rootEntity, 0, id, m_profiler, "Custom property texture %s",
                        qPrintable(source));
        qCDebug(lcScene, "Creating custom property texture %s", qPrintable(source));
        p.texture->setSource(m_presentation->imageUrl(source));
        p.texture->onLoad([setupTexture](Qt3DRender::QAbstractTexture *texture,
                          Q3DSCustomPropertyParameter *p) {
            p->param->setValue(QVariant::fromValue(texture));
            if (p->texFlagParam)
                p->texFlagParam->setValue(1);
            const QSize size = Q3DSImageManager::instance().size(texture);
            const bool isPremultiplied = false;
            if (p->texInfoParam) {
                p->texInfoParam->setValue(QVector4D(size.width(), size.height(),
                                                    isPremultiplied ? 1 : 0, 0));
            }
            setupTexture(p, texture);
        }, &p);
        p.texture->onUnload([](Qt3DRender::QAbstractTexture *texture,
                            Q3DSCustomPropertyParameter *p) {
            Q_UNUSED(texture);
            p->param->setValue({});
            p->texInfoParam->setValue({});
        }, &p);
    }
}

QVector<Qt3DRender::QParameter *> Q3DSSceneManager::prepareCustomMaterial(Q3DSCustomMaterialInstance *m, Q3DSReferencedMaterial *rm, Q3DSModelNode *model3DS)
{
    // this function can be called more than once for the same 'm' (with a different 'model3DS' each time)

    Q3DSCustomMaterialAttached *data = static_cast<Q3DSCustomMaterialAttached *>(m->attached());
    const bool firstRun = !data->prepared;
    if (firstRun)
        data->prepared = true;

    Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());

    if (firstRun)
        data->entity = modelData->entity;

    // Generate QParameters
    QVector<Qt3DRender::QParameter *> paramList;

    bool customPropertyListChange = false;
    if (data->classChanged) {
        data->classChanged = false;
        customPropertyListChange = true;
    }

    if (firstRun || customPropertyListChange) {
        forAllCustomProperties(m, [&paramList, data](const QString &propKey, const QVariant &, const Q3DSMaterial::PropertyElement &propMeta) {
            QVariant v(0); // initial value is something dummy, ignore propValue for now
            Qt3DRender::QParameter *param = new Qt3DRender::QParameter;
            param->setName(propKey);
            param->setValue(v);
            paramList.append(param);
            data->params.insert(propKey, Q3DSCustomPropertyParameter(param, v, propMeta));
        });
    } else {
        for (auto it = data->params.cbegin(), itEnd = data->params.cend(); it != itEnd; ++it)
            paramList.append(it->param);
    }

    Q3DSMaterialAttached::PerModelData md;
    md.objectOpacityParam = new Qt3DRender::QParameter;
    md.objectOpacityParam->setName(QLatin1String("object_opacity"));
    data->perModelData.insert(model3DS, md);
    paramList.append(md.objectOpacityParam);
    data->perModelData.insert(model3DS, md);

    // Lightmaps
    // check for referencedMaterial Overrides
    // Note all the below must ignore firstRun since there's nothing saying the
    // first call for a certain 'm' is the one with rm != null.
    Q3DSImage *lightmapIndirect = nullptr;
    if (rm && rm->lightmapIndirectMap())
        lightmapIndirect = rm->lightmapIndirectMap();
    else if (m->lightmapIndirectMap())
        lightmapIndirect = m->lightmapIndirectMap();
    if (lightmapIndirect) {
        if (!data->lightmapIndirectParams.sampler)
            prepareTextureParameters(data->lightmapIndirectParams, QLatin1String("lightmapIndirect"), lightmapIndirect);
        paramList.append(data->lightmapIndirectParams.parameters());
    }

    Q3DSImage *lightmapRadiosity = nullptr;
    if (rm && rm->lightmapRadiosityMap())
        lightmapRadiosity = rm->lightmapRadiosityMap();
    else if (m->lightmapRadiosityMap())
        lightmapRadiosity = m->lightmapRadiosityMap();
    if (lightmapRadiosity) {
        if (!data->lightmapRadiosityParams.sampler)
            prepareTextureParameters(data->lightmapRadiosityParams, QLatin1String("lightmapRadiosity"), lightmapRadiosity);
        paramList.append(data->lightmapRadiosityParams.parameters());
    }

    Q3DSImage *lightmapShadow = nullptr;
    if (rm && rm->lightmapShadowMap())
        lightmapShadow = rm->lightmapShadowMap();
    else if (m->lightmapShadowMap())
        lightmapShadow = m->lightmapShadowMap();
    if (lightmapShadow) {
        if (!data->lightmapShadowParams.sampler)
            prepareTextureParameters(data->lightmapShadowParams, QLatin1String("lightmapShadow"), lightmapShadow);
        paramList.append(data->lightmapShadowParams.parameters());
    }

    // IBL
    Q3DSImage *iblOverrideImage = nullptr;
    if (rm && rm->lightProbe())
        iblOverrideImage = rm->lightProbe();
    else if (m->lightProbe())
        iblOverrideImage = m->lightProbe();
    if (iblOverrideImage) {
        if (!data->lightProbeOverrideTexture) {
            data->lightProbeOverrideTexture
                    = Q3DSImageManager::instance().newReloadableTextureForImage(
                        m_rootEntity, Q3DSImageManager::GenerateMipMapsForIBL,
                        iblOverrideImage->id(),
                        m_profiler, "Texture for image %s", iblOverrideImage->id().constData());
            data->lightProbeSampler = new Qt3DRender::QParameter;
            data->lightProbeSampler->setName(QLatin1String("light_probe"));

            data->lightProbeRotation = new Qt3DRender::QParameter;
            data->lightProbeRotation->setName(QLatin1String("light_probe_rotation"));

            data->lightProbeOffset = new Qt3DRender::QParameter;
            data->lightProbeOffset->setName(QLatin1String("light_probe_offset"));
        }
        paramList.append(data->lightProbeSampler);
        paramList.append(data->lightProbeRotation);
        paramList.append(data->lightProbeOffset);
    }

    return paramList;
}

void Q3DSSceneManager::updateCustomMaterial(Q3DSCustomMaterialInstance *m, Q3DSReferencedMaterial *rm, Q3DSModelNode *model3DS)
{
    // This function is typically called in a loop for each Q3DSModelNode that
    // shares the same Q3DSCustomMaterial(Instance). Having more than one model
    // can only happen when a ReferencedMaterial is used. Currently we are
    // somewhat wasteful in this case since setting the QParameter values over
    // and over again is not really needed, with the exception of the one
    // model-specific one. We'll live with this for the time being.

    Q3DSCustomMaterialAttached *data = static_cast<Q3DSCustomMaterialAttached *>(m->attached());

    // set all dynamic property values to the corresponding QParameters
    forAllCustomProperties(m, [data, m, this](const QString &propKey, const QVariant &propValue, const Q3DSMaterial::PropertyElement &) {
        if (!data->params.contains(propKey)) // we do not currently support new dynamic properties appearing out of nowhere
            return;

        Q3DSCustomPropertyParameter &p(data->params[propKey]);
        if (propValue == p.inputValue)
            return;

        p.inputValue = propValue;

        // Floats, vectors, etc. should be good already. Other types need
        // mapping, for instance Texture is only a filename string at this
        // point whereas we need a proper Qt 3D texture.
        switch (p.meta.type) {
        case Q3DS::Texture:
            createCustomPropertyTexture(p, m->id());
            break;

            // Buffer, Image2D, etc. are not used for custom materials

        default:
            p.param->setValue(p.inputValue);
            break;
        }
    });

    auto perModelDataIt = data->perModelData.find(model3DS);
    Q_ASSERT(perModelDataIt != data->perModelData.end());
    perModelDataIt->objectOpacityParam->setValue(perModelDataIt->combinedOpacity);

    // Lightmaps
    Q3DSImage *lightmapIndirect = nullptr;
    if (rm && rm->lightmapIndirectMap())
        lightmapIndirect = rm->lightmapIndirectMap();
    else if (m->lightmapIndirectMap())
        lightmapIndirect = m->lightmapIndirectMap();
    if (lightmapIndirect)
        updateTextureParameters(data->lightmapIndirectParams, lightmapIndirect);

    Q3DSImage *lightmapRadiosity = nullptr;
    if (rm && rm->lightmapRadiosityMap())
        lightmapRadiosity = rm->lightmapRadiosityMap();
    else if (m->lightmapRadiosityMap())
        lightmapRadiosity = m->lightmapRadiosityMap();
    if (lightmapRadiosity)
        updateTextureParameters(data->lightmapRadiosityParams, lightmapRadiosity);

    Q3DSImage *lightmapShadow = nullptr;
    if (rm && rm->lightmapShadowMap())
        lightmapShadow = rm->lightmapShadowMap();
    else if (m->lightmapShadowMap())
        lightmapShadow = m->lightmapShadowMap();
    if (lightmapShadow)
        updateTextureParameters(data->lightmapShadowParams, lightmapShadow);

    // IBL Override
    Q3DSImage *iblOverride = nullptr;
    if (rm && rm->lightProbe())
        iblOverride = rm->lightProbe();
    else if (m->lightProbe())
        iblOverride = m->lightProbe();

    // IBL
    if (iblOverride) {
        // also sets min/mag and generates mipmaps
        data->lightProbeOverrideTexture->setSource(
                    m_presentation->imageUrl(iblOverride->sourcePath()));
        data->lightProbeOverrideTexture->onLoad([](Qt3DRender::QAbstractTexture *texture,
                                                Q3DSImage *iblOverride,
                                                Q3DSCustomMaterialAttached *data) {
            data->lightProbeSampler->setValue(QVariant::fromValue(texture));

            Qt3DRender::QTextureWrapMode wrapMode;
            wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);

            switch (iblOverride->horizontalTiling()) {
            case Q3DSImage::Tiled:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
                break;
            case Q3DSImage::Mirrored:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                break;
            default:
                wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
                break;
            }

            switch (iblOverride->verticalTiling()) {
            case Q3DSImage::Tiled:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
                break;
            case Q3DSImage::Mirrored:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::MirroredRepeat);
                break;
            default:
                wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
                break;
            }

            texture->setWrapMode(wrapMode);

            const QMatrix4x4 &textureTransform = iblOverride->textureTransform();
            const float *m = textureTransform.constData();

            // offsets.w = max mip level
            const QSize texSize = Q3DSImageManager::instance().size(texture);
            float mipLevels = float(qCeil(qLog2(qMax(texSize.width(), texSize.height()))));
            QVector4D offsets(m[12], m[13], 0.0f, mipLevels);
            data->lightProbeOffset->setValue(offsets);

            QVector4D rotations(m[0], m[4], m[1], m[5]);
            data->lightProbeRotation->setValue(rotations);
        }, iblOverride, data);
        data->lightProbeOverrideTexture->onUnload([](Qt3DRender::QAbstractTexture *texture,
                                                  Q3DSCustomMaterialAttached *data) {
            Q_UNUSED(texture);
            data->lightProbeSampler->setValue({});
            data->lightProbeOffset->setValue({});
            data->lightProbeRotation->setValue({});
        }, data);
    }
}

void Q3DSSceneManager::initEyeEffect(Q3DSEffectInstance *eff3DS, Q3DSLayerNode *layer3DS, Q3DSEyeData *eyeData)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    Q3DSEffectAttached *effData = new Q3DSEffectAttached;
    effData->entity = layerData->entity;
    effData->layer3DS = layer3DS;
    eff3DS->setAttached(effData);
    eyeData->effectData.effects.append(eff3DS);

    if (!eyeData->effLayerTexture) {
        // The effect's output texture is never multisampled. If the layer
        // (i.e. the effect's input) uses MSAA or SSAA then an extra resolve
        // step will be applied via BlitFramebuffer. From that point on
        // everything behaves like non-MSAA.
        const QSize sz = safeLayerPixelSize(layerData);
        eyeData->effLayerTexture = newColorBuffer(sz, 1);
        eyeData->effLayerTexture->setParent(layerData->entity);
        m_profiler->trackNewObject(eyeData->effLayerTexture, Q3DSProfiler::Texture2DObject,
                                   "Effect buffer for layer %s", layer3DS->id().constData());
        layerData->sizeManagedTextures.append(eyeData->effLayerTexture);
    }

    effData->propertyChangeObserverIndex = eff3DS->addPropertyChangeObserver(
                std::bind(&Q3DSSceneManager::handlePropertyChange, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    effData->eventObserverIndex = eff3DS->addEventHandler(QString(), std::bind(&Q3DSSceneManager::handleEvent, this, std::placeholders::_1));
}

void Q3DSSceneManager::initEffect(Q3DSEffectInstance *eff3DS, Q3DSLayerNode *layer3DS)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    initEyeEffect(eff3DS, layer3DS, layerData->eyeMono);
#if 0
    // Note: Effects currently disabled for stereoscopic views
    // TODO: Should we here duplicate eff3DS to make this work?
    initEyeEffect(eff3DS, layer3DS, layerData->eyeLeft);
    initEyeEffect(eff3DS, layer3DS, layerData->eyeRight);
#endif
}

static inline void setTextureInfoUniform(Qt3DRender::QParameter *param, Qt3DRender::QAbstractTexture *texture)
{
    const QSize size = Q3DSImageManager::instance().size(texture);
    const bool isPremultiplied = false;
    param->setValue(QVector4D(size.width(), size.height(), isPremultiplied ? 1 : 0, 0));
}

static inline Qt3DRender::QParameter *makePropertyUniform(const QString &name, const QString &value, const Q3DSMaterial::PropertyElement &propMeta)
{
    QScopedPointer<Qt3DRender::QParameter> param(new Qt3DRender::QParameter);
    param->setName(name);

    switch (propMeta.type) {
    case Q3DS::Float:
    {
        float v;
        if (Q3DS::convertToFloat(&value, &v)) {
            param->setValue(v);
            return param.take();
        } else {
            qWarning("Invalid value %s for custom property %s", qPrintable(value), qPrintable(name));
        }
    }
        break;
    case Q3DS::Long:
    {
        int v;
        if (Q3DS::convertToInt(&value, &v)) {
            param->setValue(v);
            return param.take();
        } else {
            qWarning("Invalid value %s for custom property %s", qPrintable(value), qPrintable(name));
        }
    }
        break;
    case Q3DS::Float2:
    {
        QVector2D v;
        if (Q3DS::convertToVector2D(&value, &v)) {
            param->setValue(v);
            return param.take();
        } else {
            qWarning("Invalid value %s for custom property %s", qPrintable(value), qPrintable(name));
        }
    }
        break;
    case Q3DS::Matrix4x4:
    {
        QMatrix4x4 v;
        if (Q3DS::convertToMatrix4x4(&value, &v)) {
            param->setValue(v);
            return param.take();
        } else {
            qWarning("Invalid value %s for custom property %s", qPrintable(value), qPrintable(name));
        }
    }
        break;
    case Q3DS::Vector:
    case Q3DS::Scale:
    case Q3DS::Rotation:
    case Q3DS::Color:
    {
        QVector3D v;
        if (Q3DS::convertToVector3D(&value, &v)) {
            param->setValue(v);
            return param.take();
        } else {
            qWarning("Invalid value %s for custom property %s", qPrintable(value), qPrintable(name));
        }
    }
        break;
    default:
        qWarning("Unknown uniform mapping for custom property %s with type %d", qPrintable(name), propMeta.type);
        break;
    }

    return nullptr;
}

static inline Qt3DRender::QStencilTestArguments::StencilFunction convertToQt3DStencilFunc(Q3DSMaterial::BoolOp func)
{
    switch (func) {
    case Q3DSMaterial::Never:
        return Qt3DRender::QStencilTestArguments::Never;
    case Q3DSMaterial::AlwaysTrue:
        return Qt3DRender::QStencilTestArguments::Always;
    case Q3DSMaterial::Less:
        return Qt3DRender::QStencilTestArguments::Less;
    case Q3DSMaterial::LessThanOrEqual:
        return Qt3DRender::QStencilTestArguments::LessOrEqual;
    case Q3DSMaterial::Equal:
        return Qt3DRender::QStencilTestArguments::Equal;
    case Q3DSMaterial::GreaterThanOrEqual:
        return Qt3DRender::QStencilTestArguments::GreaterOrEqual;
    case Q3DSMaterial::Greater:
        return Qt3DRender::QStencilTestArguments::Greater;
    case Q3DSMaterial::NotEqual:
        return Qt3DRender::QStencilTestArguments::NotEqual;
    default:
        return Qt3DRender::QStencilTestArguments::Never;
    }
}

static inline Qt3DRender::QStencilOperationArguments::Operation convertToQt3DStencilOp(Q3DSMaterial::StencilOp op)
{
    switch (op) {
    case Q3DSMaterial::Keep:
        return Qt3DRender::QStencilOperationArguments::Keep;
    case Q3DSMaterial::Zero:
        return Qt3DRender::QStencilOperationArguments::Zero;
    case Q3DSMaterial::Replace:
        return Qt3DRender::QStencilOperationArguments::Replace;
    case Q3DSMaterial::Increment:
        return Qt3DRender::QStencilOperationArguments::Increment;
    case Q3DSMaterial::IncrementWrap:
        return Qt3DRender::QStencilOperationArguments::IncrementWrap;
    case Q3DSMaterial::Decrement:
        return Qt3DRender::QStencilOperationArguments::Decrement;
    case Q3DSMaterial::DecrementWrap:
        return Qt3DRender::QStencilOperationArguments::DecrementWrap;
    case Q3DSMaterial::Invert:
        return Qt3DRender::QStencilOperationArguments::Invert;
    default:
        return Qt3DRender::QStencilOperationArguments::Keep;
    }
}

static inline void setupStencilTest(Qt3DRender::QStencilTest *stencilTest, const Q3DSMaterial::PassCommand &cmd)
{
    auto d = cmd.data();
    for (auto s : { stencilTest->front(), stencilTest->back() }) {
        s->setComparisonMask(d->mask);
        s->setReferenceValue(d->stencilValue);
        s->setStencilFunction(convertToQt3DStencilFunc(d->stencilFunction));
    }
}

// The main entry point for activating/deactivating effects on a layer. Called
// upon scene building and every time an effect gets hidden/shown (eyeball).
void Q3DSSceneManager::updateEyeEffectStatus(Q3DSLayerNode *layer3DS, Q3DSEyeData *eyeData, bool force)
{
    const int count = eyeData->effectData.effects.count();
    int activeEffectCount = 0;
    int firstActiveIndex = 0;
    int lastActiveIndex = 0;
    bool change = false;

    // Like Layers, the order of Effects is front-to-back in the object
    // tree (and in effects[]), but effect chain building is back-to-front
    // by nature. So reverse the iteration in order to match the 3DS1
    // results.
    for (int i = count - 1; i >= 0; --i) {
        Q3DSEffectInstance *eff3DS = eyeData->effectData.effects[i];
        Q3DSEffectAttached *effData = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
        if (eff3DS->eyeballEnabled() && effData->visibilityTag == Q3DSGraphObjectAttached::Visible) {
            ++activeEffectCount;
            if (activeEffectCount == 1)
                firstActiveIndex = i;
            lastActiveIndex = i;
            if (!effData->active)
                change = true;
        } else {
            if (effData->active)
                change = true;
        }
    }

    eyeData->effectData.activeEffectCount = activeEffectCount;

    if (!change && !force)
        return; // nothing has changed

    // Activating/deactivating an effect in the chain needs resetting
    // source/output related settings in the other effects so it is simpler to
    // reactivate everything (considering also that multiple effects (like more
    // than two) are rare).

    qCDebug(lcScene, "Reinitializing effect chain (%d of %d active) on layer %s",
            activeEffectCount, count, layer3DS->id().constData());

    for (int i = 0; i < count; ++i) {
        Q3DSEffectInstance *eff3DS = eyeData->effectData.effects[i];
        deactivateEffect(eff3DS, layer3DS);
    }

    eyeData->effectData.combinedEffectFlags = 0;

    cleanupEffectSource(layer3DS, eyeData);

    if (activeEffectCount) {
        ensureEffectSource(layer3DS, eyeData);

        Qt3DRender::QAbstractTexture *prevOutput = nullptr;
        for (int i = count - 1; i >= 0; --i) {
            Q3DSEffectInstance *eff3DS = eyeData->effectData.effects[i];
            if (eff3DS->eyeballEnabled() && eff3DS->attached()->visibilityTag == Q3DSGraphObjectAttached::Visible) {
                Q3DSSceneManager::EffectActivationFlags flags = 0;
                if (i == firstActiveIndex)
                    flags |= Q3DSSceneManager::EffIsFirst;
                if (i == lastActiveIndex)
                    flags |= Q3DSSceneManager::EffIsLast;
                activateEffect(eff3DS, layer3DS, flags, prevOutput, eyeData);
                eyeData->effectData.combinedEffectFlags |= eff3DS->effect()->flags();
                prevOutput = eff3DS->attached<Q3DSEffectAttached>()->outputTexture;
            }
        }
    }

    if (activeEffectCount) {
        // The layer compositor must use the output of the effect passes from now on.
        eyeData->compositorSourceParam->setValue(QVariant::fromValue(eyeData->effLayerTexture));
    } else {
        eyeData->compositorSourceParam->setValue(QVariant::fromValue(eyeData->layerTexture));
    }
}

void Q3DSSceneManager::updateEffectStatus(Q3DSLayerNode *layer3DS, bool force)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    updateEyeEffectStatus(layer3DS, layerData->eyeMono, force);
#if 0
    // Note: Effects currently disabled for stereoscopic views
    updateEyeEffectStatus(layer3DS, layerData->eyeLeft, force);
    updateEyeEffectStatus(layer3DS, layerData->eyeRight, force);
#endif

    const bool wasActive = layerData->effectActive;
    int activeEffectCount = layerData->eyeMono->effectData.activeEffectCount;

    if (activeEffectCount) {
        // The layer compositor must use the output of the effect passes from now on.
        // TODO: Effects are disabled for stereoscopic views as msaa+effect currently doesn't work for stereo
        layerData->effectActive = m_engine->isStereoscopic() ? false : true;
        if (!wasActive && layerData->msaaSampleCount > 1)
            updateLayerCompositorProgram(layer3DS);
    } else {
        layerData->effectActive = false;
        if (wasActive && layerData->msaaSampleCount > 1)
            updateLayerCompositorProgram(layer3DS);
    }
}

void Q3DSSceneManager::ensureEffectSource(Q3DSLayerNode *layer3DS, Q3DSEyeData *eyeData)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    // MSAA/SSAA layers need an additional resolve step since effects can only
    // work with non-MSAA (and 1:1 sized) textures as input.
    const bool needsResolve = layerData->msaaSampleCount > 1 || layerData->ssaaScaleFactor > 1;
    if (needsResolve) {
        eyeData->effectData.sourceTexture = new Qt3DRender::QTexture2D(m_rootEntity);
        m_profiler->trackNewObject(eyeData->effectData.sourceTexture, Q3DSProfiler::Texture2DObject, layer3DS->id(),
                                   "Resolve buffer for effects");
        eyeData->effectData.sourceTexture->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
        eyeData->effectData.sourceTexture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
        eyeData->effectData.sourceTexture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
        eyeData->effectData.ownsSourceTexture = true;

        Qt3DRender::QRenderTarget *rtSrc = new Qt3DRender::QRenderTarget;
        m_profiler->trackNewObject(rtSrc, Q3DSProfiler::RenderTargetObject, layer3DS->id(),
                                   "Src resolve RT for effects");
        Qt3DRender::QRenderTargetOutput *rtSrcOutput = new Qt3DRender::QRenderTargetOutput;
        rtSrcOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
        rtSrcOutput->setTexture(eyeData->layerTexture);
        rtSrc->addOutput(rtSrcOutput);

        Qt3DRender::QRenderTarget *rtDst = new Qt3DRender::QRenderTarget;
        m_profiler->trackNewObject(rtDst, Q3DSProfiler::RenderTargetObject, layer3DS->id(),
                                   "Dst resolve RT for effects");
        Qt3DRender::QRenderTargetOutput *rtDstOutput = new Qt3DRender::QRenderTargetOutput;
        rtDstOutput->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
        rtDstOutput->setTexture(eyeData->effectData.sourceTexture);
        rtDst->addOutput(rtDstOutput);

        Qt3DRender::QBlitFramebuffer *resolve = new Qt3DRender::QBlitFramebuffer(eyeData->effectData.effectRoot);
        eyeData->effectData.resolve = resolve;
        new Qt3DRender::QNoDraw(resolve);
        resolve->setSource(rtSrc);
        resolve->setDestination(rtDst);

        auto blitResizer = [resolve, layerData](Q3DSLayerNode *) {
            resolve->setSourceRect(QRectF(QPointF(0, 0), layerData->layerSize * layerData->ssaaScaleFactor));
            resolve->setDestinationRect(QRectF(QPointF(0, 0), layerData->layerSize));
        };

        // must track layer size, but without the SSAA scale
        prepareSizeDependentTexture(eyeData->effectData.sourceTexture, layer3DS, blitResizer,
                                    Q3DSLayerAttached::SizeManagedTexture::IgnoreSSAA);
        // set initial blit rects
        blitResizer(layer3DS);
    } else {
        eyeData->effectData.sourceTexture = eyeData->layerTexture;
        eyeData->effectData.ownsSourceTexture = false;
        eyeData->effectData.resolve = nullptr;
    }
}

void Q3DSSceneManager::cleanupEffectSource(Q3DSLayerNode *layer3DS, Q3DSEyeData *eyeData)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    delete eyeData->effectData.resolve;
    eyeData->effectData.resolve = nullptr;
    if (eyeData->effectData.ownsSourceTexture) {
        eyeData->effectData.ownsSourceTexture = false;
        layerData->sizeManagedTextures.removeOne(eyeData->effectData.sourceTexture);
        delete eyeData->effectData.sourceTexture;
    }
}

void Q3DSSceneManager::activateEffect(Q3DSEffectInstance *eff3DS,
                                      Q3DSLayerNode *layer3DS,
                                      EffectActivationFlags flags,
                                      Qt3DRender::QAbstractTexture *prevOutput,
                                      Q3DSEyeData *eyeData)
{
    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());

    Q3DSEffectAttached *effData = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
    if (effData->active)
        return;

    qCDebug(lcPerf, "Applying post-processing effect %s to layer %s",
            eff3DS->id().constData(), layer3DS->id().constData());

    // Set up textures for Buffers
    createEffectBuffers(eff3DS);

    QVector<Qt3DRender::QParameter *> commonParamList;

    // Create QParameters for built-in uniforms (see effect.glsllib).
    // Texture0 and friends depend on the input so those are per pass.
    effData->appFrameParam = new Qt3DRender::QParameter;
    effData->appFrameParam->setName(QLatin1String("AppFrame"));
    commonParamList.append(effData->appFrameParam);

    effData->fpsParam = new Qt3DRender::QParameter;
    effData->fpsParam->setName(QLatin1String("FPS"));
    commonParamList.append(effData->fpsParam);

    effData->cameraClipRangeParam = new Qt3DRender::QParameter;
    effData->cameraClipRangeParam->setName(QLatin1String("CameraClipRange"));
    commonParamList.append(effData->cameraClipRangeParam);

    // Create QParameters for custom properties.
    forAllCustomProperties(eff3DS, [&commonParamList, effData](const QString &propKey, const QVariant &propValue, const Q3DSMaterial::PropertyElement &propMeta) {
        // textures with no filename are effectively samplers (to be used in a BufferInput f.ex.)
        if (propMeta.type == Q3DS::Texture && propValue.toString().isEmpty())
            return;

        Qt3DRender::QParameter *param = new Qt3DRender::QParameter;
        param->setName(propKey);
        commonParamList.append(param);
        Qt3DRender::QParameter *infoParam = nullptr;
        Qt3DRender::QParameter *flagParam = nullptr;
        // textures do not just get a sampler uniform but also an additional vec4
        if (propMeta.type == Q3DS::Texture) {
            infoParam = new Qt3DRender::QParameter;
            infoParam->setName(propKey + QLatin1String("Info"));
            commonParamList.append(infoParam);
            flagParam = new Qt3DRender::QParameter;
            flagParam->setName(QLatin1String("flag") + propKey);
            flagParam->setValue(0); // will change to 1 when loading something
            commonParamList.append(flagParam);
        }
        Q3DSCustomPropertyParameter pp(param, QVariant(), propMeta);
        pp.texInfoParam = infoParam;
        pp.texFlagParam = flagParam;
        effData->params.insert(propKey, pp);
    });

    // Mark the effect as created (even though it's still in progress) since
    // the updateEffect* functions need this flag.
    effData->active = true;

    // Set initial QParameter (uniform) values.
    updateEffect(eff3DS);

    // The first effect takes either the layer's output texture or a resolved
    // (if MSAA/SSAA) version of it as its input. The last effect outputs to
    // effLayerTexture. Effects in-between have their own output textures while
    // the source refers to the output of the previous effect.
    if (flags.testFlag(EffIsFirst)) {
        Q_ASSERT(eyeData->effectData.sourceTexture);
        effData->sourceTexture = eyeData->effectData.sourceTexture;
    } else {
        Q_ASSERT(prevOutput);
        effData->sourceTexture = prevOutput;
    }
    if (flags.testFlag(EffIsLast)) {
        Q_ASSERT(eyeData->effLayerTexture);
        effData->outputTexture = eyeData->effLayerTexture;
        effData->ownsOutputTexture = false;
    } else {
        effData->outputTexture = new Qt3DRender::QTexture2D(m_rootEntity);
        m_profiler->trackNewObject(effData->outputTexture, Q3DSProfiler::Texture2DObject,
                                   "Output texture for effect %s", eff3DS->id().constData());
        effData->outputTexture->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
        effData->outputTexture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
        effData->outputTexture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
        prepareSizeDependentTexture(effData->outputTexture, layer3DS);
        effData->ownsOutputTexture = true;
    }

    const Q3DSEffect *effDesc = eff3DS->effect();
    const QMap<QString, Q3DSMaterial::Shader> &shaderPrograms = effDesc->shaders();
    const QMap<QString, Q3DSMaterial::PropertyElement> &propMeta = effDesc->properties();

    // Each pass leads to creating a new framegraph subtree parented to effectRoot.
    auto passes = effDesc->passes();
    const bool implicitPass = passes.isEmpty();
    const int passCount = implicitPass ? 1 : passes.count();
    for (int passIdx = 0; passIdx < passCount; ++passIdx) {
        Q3DSMaterial::Pass pass;
        if (!implicitPass) {
            pass = passes[passIdx];
            if (!shaderPrograms.contains(pass.shaderName)) {
                qWarning("Effect %s: Unknown shader program %s; pass ignored",
                         eff3DS->id().constData(), qPrintable(pass.shaderName));
                continue;
            }
            qCDebug(lcScene, "  Registered effect pass with shader program %s input %s output %s %d extra commands",
                    qPrintable(pass.shaderName), qPrintable(pass.input), qPrintable(pass.output), pass.commands.count());
        } else {
            // Not having any passes is valid too. This should use the first vertex/fragment shader (no name matching).
            if (shaderPrograms.isEmpty()) {
                qWarning("Effect %s: No shader program; pass ignored", eff3DS->id().constData());
                continue;
            }
            // Leave pass.input and output as the default [source] and [dest].
            qCDebug(lcScene, "  Registered implicit effect pass with input %s output %s",
                    qPrintable(pass.input), qPrintable(pass.output));
        }

        QVector<Qt3DRender::QParameter *> paramList;
        paramList << commonParamList;

        Qt3DRender::QBlendEquation *blendFunc = nullptr;
        Qt3DRender::QBlendEquationArguments *blendArgs = nullptr;
        Qt3DRender::QStencilTest *stencilTest = nullptr;
        Qt3DRender::QStencilOperation *stencilOp = nullptr;
        bool depthNeedsClear = false;
        bool stencilNeedsClear = false;
        QString depthStencilBufferName;

        // figure out what the effect wants as shader inputs or when it comes to render states
        for (const Q3DSMaterial::PassCommand &cmd : pass.commands) {
            switch (cmd.type()) {
            case Q3DSMaterial::PassCommand::BufferInputType:
            {
                bool valid = true;
                const QString bufferName = cmd.data()->value;
                if (bufferName == QStringLiteral("[source]")) {
                    Qt3DRender::QParameter *texParam = new Qt3DRender::QParameter;
                    texParam->setName(cmd.data()->param);
                    texParam->setValue(QVariant::fromValue(effData->sourceTexture));
                    paramList.append(texParam);
                    Qt3DRender::QParameter *texInfoParam = new Qt3DRender::QParameter;
                    texInfoParam->setName(cmd.data()->param + QLatin1String("Info"));
                    setTextureInfoUniform(texInfoParam, effData->sourceTexture);
                    effData->sourceDepTextureInfoParams.append(qMakePair(texInfoParam, effData->sourceTexture));
                    paramList.append(texInfoParam);
                } else if (effData->textureBuffers.contains(bufferName)) {
                    Q3DSEffectAttached::TextureBuffer &tb(effData->textureBuffers[bufferName]);
                    Qt3DRender::QParameter *texParam = new Qt3DRender::QParameter;
                    texParam->setName(cmd.data()->param);
                    texParam->setValue(QVariant::fromValue(tb.texture));
                    paramList.append(texParam);
                    Qt3DRender::QParameter *texInfoParam = new Qt3DRender::QParameter;
                    texInfoParam->setName(cmd.data()->param + QLatin1String("Info"));
                    setTextureInfoUniform(texInfoParam, tb.texture);
                    tb.textureInfoParams.append(texInfoParam);
                    paramList.append(texInfoParam);
                } else {
                    qWarning("Effect %s: Unknown buffer %s", eff3DS->id().constData(), qPrintable(bufferName));
                    valid = false;
                }
                Qt3DRender::QParameter *texFlagParam = new Qt3DRender::QParameter;
                texFlagParam->setName(QLatin1String("flag") + cmd.data()->param);
                texFlagParam->setValue(valid ? 1 : 0);
                paramList.append(texFlagParam);
            }
                break;

            case Q3DSMaterial::PassCommand::DepthInputType:
            {
                setDepthTextureEnabled(layer3DS, true);
                // param cannot be anything else but a buffer name (with no
                // source, hence being mapped to a plain sampler).
                const QString samplerName = cmd.data()->param;
                const bool valid = propMeta.contains(samplerName);
                if (valid) {
                    Qt3DRender::QParameter *texParam = new Qt3DRender::QParameter;
                    texParam->setName(samplerName);
                    texParam->setValue(QVariant::fromValue(eyeData->depthTextureData.depthTexture));
                    paramList.append(texParam);
                    // Have the usual Info and flag uniforms.
                    Qt3DRender::QParameter *texInfoParam = new Qt3DRender::QParameter;
                    texInfoParam->setName(samplerName + QLatin1String("Info"));
                    // Can conveniently use the source texture since the
                    // sizes must match. This is very handy esp. with
                    // sourceDepTextureInfoParams since we get size updates
                    // via the same code path.
                    setTextureInfoUniform(texInfoParam, effData->sourceTexture);
                    effData->sourceDepTextureInfoParams.append(qMakePair(texInfoParam, effData->sourceTexture));
                    paramList.append(texInfoParam);
                } else {
                    qWarning("Effect %s: Unknown depth texture sampler %s",
                             eff3DS->id().constData(), qPrintable(samplerName));
                }
                Qt3DRender::QParameter *texFlagParam = new Qt3DRender::QParameter;
                texFlagParam->setName(QLatin1String("flag") + samplerName);
                texFlagParam->setValue(valid ? 1 : 0);
                paramList.append(texFlagParam);
            }
                break;

            case Q3DSMaterial::PassCommand::SetParamType:
            {
                auto cmdData = cmd.data();
                if (propMeta.contains(cmdData->name)) {
                    const Q3DSMaterial::PropertyElement &propDesc(propMeta.value(cmdData->name));
                    Qt3DRender::QParameter *param = makePropertyUniform(cmdData->name, cmdData->value, propDesc);
                    if (param)
                        paramList.append(param);
                } else {
                    qWarning("Effect %s: SetParam for unknown property %s",
                             eff3DS->id().constData(), qPrintable(cmd.data()->name));
                }
            }
                break;

            case Q3DSMaterial::PassCommand::BlendingType:
            {
                if (!blendFunc)
                    blendFunc = new Qt3DRender::QBlendEquation;
                blendFunc->setBlendFunction(Qt3DRender::QBlendEquation::Add);
                if (!blendArgs)
                    blendArgs = new Qt3DRender::QBlendEquationArguments;
                switch (cmd.data()->blendSource) {
                case Q3DSMaterial::SrcAlpha:
                    blendArgs->setSourceRgba(Qt3DRender::QBlendEquationArguments::SourceAlpha);
                    break;
                case Q3DSMaterial::OneMinusSrcAlpha:
                    blendArgs->setSourceRgba(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);
                    break;
                case Q3DSMaterial::One:
                    blendArgs->setSourceRgba(Qt3DRender::QBlendEquationArguments::One);
                    break;
                default:
                    break;
                }
                switch (cmd.data()->blendDestination) {
                case Q3DSMaterial::SrcAlpha:
                    blendArgs->setDestinationRgba(Qt3DRender::QBlendEquationArguments::SourceAlpha);
                    break;
                case Q3DSMaterial::OneMinusSrcAlpha:
                    blendArgs->setDestinationRgba(Qt3DRender::QBlendEquationArguments::OneMinusSourceAlpha);
                    break;
                case Q3DSMaterial::One:
                    blendArgs->setDestinationRgba(Qt3DRender::QBlendEquationArguments::One);
                    break;
                default:
                    break;
                }
            }
                break;

            case Q3DSMaterial::PassCommand::RenderStateType:
            {
                if (cmd.data()->name == QStringLiteral("Stencil")) {
                    bool enabled = false;
                    if (Q3DS::convertToBool(&cmd.data()->value, &enabled)) {
                        if (enabled) {
                            if (!stencilTest)
                                stencilTest = new Qt3DRender::QStencilTest;
                            Q3DSMaterial::PassCommand dummy; // with defaults
                            setupStencilTest(stencilTest, dummy);
                        } else {
                            delete stencilTest;
                            stencilTest = nullptr;
                            delete stencilOp;
                            stencilOp = nullptr;
                        }
                    }
                } else {
                    qWarning("Effect %s: Unsupported render state %s", eff3DS->id().constData(), qPrintable(cmd.data()->name));
                }
            }
                break;

            case Q3DSMaterial::PassCommand::DepthStencilType:
            {
                auto d = cmd.data();
                depthStencilBufferName = d->bufferName;
                depthNeedsClear = d->flags.testFlag(Q3DSMaterial::ClearDepth);
                stencilNeedsClear = d->flags.testFlag(Q3DSMaterial::ClearStencil);

                if (!stencilTest)
                    stencilTest = new Qt3DRender::QStencilTest;

                setupStencilTest(stencilTest, cmd);

                if (!stencilOp)
                    stencilOp = new Qt3DRender::QStencilOperation;

                for (auto s : { stencilOp->front(), stencilOp->back() }) {
                    s->setStencilTestFailureOperation(convertToQt3DStencilOp(d->stencilFail));
                    s->setDepthTestFailureOperation(convertToQt3DStencilOp(d->depthFail));
                    s->setAllTestsPassOperation(convertToQt3DStencilOp(d->depthPass));
                }
            }
                break;

            default:
                qWarning("Effect %s: Unhandled command %d", eff3DS->id().constData(), cmd.type());
                break;
            }
        }

        // input
        Qt3DRender::QAbstractTexture *passInput = nullptr;
        if (pass.input == QStringLiteral("[source]")) {
            passInput = effData->sourceTexture;
        } else {
            if (effData->textureBuffers.contains(pass.input)) {
                passInput = effData->textureBuffers.value(pass.input).texture;
            } else {
                qWarning("Effect %s: Unknown input buffer %s; pass ignored",
                         eff3DS->id().constData(), qPrintable(pass.input));
                continue;
            }
        }

        // output
        bool outputNeedsClear = false;
        Qt3DRender::QAbstractTexture *passOutput = nullptr;
        if (pass.output == QStringLiteral("[dest]")) {
            passOutput = effData->outputTexture;
            outputNeedsClear = true;
        } else {
            if (effData->textureBuffers.contains(pass.output)) {
                auto tb = effData->textureBuffers.value(pass.output);
                passOutput = tb.texture;
                outputNeedsClear = tb.hasSceneLifetime;
            } else {
                qWarning("Effect %s: Unknown output buffer %s; pass ignored",
                         eff3DS->id().constData(), qPrintable(pass.output));
                continue;
            }
        }

        // shader uniforms
        Qt3DRender::QParameter *texture0Param = new Qt3DRender::QParameter;
        texture0Param->setName(QLatin1String("Texture0"));
        texture0Param->setValue(QVariant::fromValue(passInput));
        paramList.append(texture0Param);

        Qt3DRender::QParameter *texture0InfoParam = new Qt3DRender::QParameter;
        texture0InfoParam->setName(QLatin1String("Texture0Info"));
        paramList.append(texture0InfoParam);

        Qt3DRender::QParameter *texture0FlagParam = new Qt3DRender::QParameter;
        texture0FlagParam->setName(QLatin1String("Texture0Flags")); // this is not a mistake, it's not flagTexture0 but Texture0Flags. go figure.
        texture0FlagParam->setValue(1);
        paramList.append(texture0FlagParam);

        Qt3DRender::QParameter *fragColorAlphaParam = new Qt3DRender::QParameter;
        fragColorAlphaParam->setName(QLatin1String("FragColorAlphaSettings"));
        fragColorAlphaParam->setValue(QVector2D(1.0f, 0.0f));
        paramList.append(fragColorAlphaParam);

        Qt3DRender::QParameter *destSizeParam = new Qt3DRender::QParameter;
        destSizeParam->setName(QLatin1String("DestSize"));
        paramList.append(destSizeParam);

        Q3DSEffectAttached::PassData pd;
        pd.passInput = passInput;
        pd.texture0InfoParam = texture0InfoParam;
        pd.passOutput = passOutput;
        pd.destSizeParam = destSizeParam;
        effData->passData.append(pd);

        // get the shader program
        const Q3DSMaterial::Shader &shaderProgram = !implicitPass ? shaderPrograms.value(pass.shaderName) : shaderPrograms.first();
        const QString decoratedShaderName = QString::fromUtf8(eff3DS->id()) + QLatin1Char('_') + pass.shaderName;
        const QString decoratedVertexShader = effDesc->addPropertyUniforms(shaderProgram.vertexShader);
        const QString decoratedFragmentShader = effDesc->addPropertyUniforms(shaderProgram.fragmentShader);
        Qt3DRender::QShaderProgram *prog = Q3DSShaderManager::instance().getEffectShader(m_rootEntity,
                                                                                         decoratedShaderName,
                                                                                         decoratedVertexShader,
                                                                                         decoratedFragmentShader);

        effData->quadEntityTag = new Qt3DRender::QLayer(layerData->entity);
        effData->quadEntityTag->setObjectName(QLatin1String("Effect quad pass"));

        FsQuadParams quadInfo;
        quadInfo.parentEntity = m_rootEntity;
        quadInfo.passNames << QLatin1String("eff");
        quadInfo.passProgs << prog;
        quadInfo.tag = effData->quadEntityTag;
        quadInfo.params = paramList;
        if (blendFunc)
            quadInfo.renderStates << blendFunc;
        if (blendArgs)
            quadInfo.renderStates << blendArgs;
        if (stencilTest)
            quadInfo.renderStates << stencilTest;
        if (stencilOp)
            quadInfo.renderStates << stencilOp;

        effData->quadEntity = buildFsQuad(quadInfo);

        // framegraph
        Qt3DRender::QRenderTargetSelector *rtSel = new Qt3DRender::QRenderTargetSelector(eyeData->effectData.effectRoot);
        effData->passFgRoots.append(rtSel);
        Qt3DRender::QRenderTarget *rt = new Qt3DRender::QRenderTarget;
        m_profiler->trackNewObject(rt, Q3DSProfiler::RenderTargetObject, "RT for effect %s pass %d",
                                   eff3DS->id().constData(), passIdx + 1);
        Qt3DRender::QRenderTargetOutput *color = new Qt3DRender::QRenderTargetOutput;
        color->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::Color0);
        color->setTexture(passOutput);
        rt->addOutput(color);
        if (!depthStencilBufferName.isEmpty()) {
            if (effData->textureBuffers.contains(depthStencilBufferName)) {
                qCDebug(lcScene, "    Binding buffer %s for depth-stencil", qPrintable(depthStencilBufferName));
                Qt3DRender::QRenderTargetOutput *ds = new Qt3DRender::QRenderTargetOutput;
                ds->setAttachmentPoint(Qt3DRender::QRenderTargetOutput::DepthStencil);
                ds->setTexture(effData->textureBuffers[depthStencilBufferName].texture);
                rt->addOutput(ds);
            } else {
                qWarning("Effect %s: Unknown depth-stencil buffer %s",
                         eff3DS->id().constData(), qPrintable(depthStencilBufferName));
            }
        }
        rtSel->setTarget(rt);

        Qt3DRender::QClearBuffers *clearBuf = new Qt3DRender::QClearBuffers(rtSel);
        clearBuf->setClearColor(Qt::transparent);
        int buffersToClear = Qt3DRender::QClearBuffers::None;
        if (outputNeedsClear)
            buffersToClear |= Qt3DRender::QClearBuffers::ColorBuffer;
        if (depthNeedsClear)
            buffersToClear |= Qt3DRender::QClearBuffers::DepthBuffer;
        if (stencilNeedsClear)
            buffersToClear |= Qt3DRender::QClearBuffers::StencilBuffer;
        clearBuf->setBuffers(Qt3DRender::QClearBuffers::BufferType(buffersToClear));

        Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(clearBuf);
        layerFilter->addLayer(effData->quadEntityTag);
    }

    // set initial values for per-frame uniforms
    // (or the ones that depend on pass input/output size and are easier to handle this way)
    updateEffectForNextFrame(eff3DS, 0);
}

void Q3DSSceneManager::deactivateEffect(Q3DSEffectInstance *eff3DS, Q3DSLayerNode *layer3DS)
{
    Q3DSEffectAttached *effData = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
    if (!effData->active)
        return;

    qCDebug(lcPerf, "Disabling post-processing effect %s on layer %s",
            eff3DS->id().constData(), layer3DS->id().constData());

    effData->active = false;

    // Kill the quad entity, the framegraph additions that were made under
    // effectRoot, and any textures that were created by activateEffect.

    delete effData->quadEntity;

    qDeleteAll(effData->passFgRoots);

    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    for (const Q3DSEffectAttached::TextureBuffer &tb : effData->textureBuffers) {
        layerData->sizeManagedTextures.removeOne(tb.texture);
        delete tb.texture;
    }

    if (effData->ownsOutputTexture) {
        layerData->sizeManagedTextures.removeOne(effData->outputTexture);
        delete effData->outputTexture;
    }

    effData->reset();
    effData->layer3DS = layer3DS;
}

void Q3DSEffectAttached::reset()
{
    active = false;
    layer3DS = nullptr;
    quadEntity = nullptr;
    quadEntityTag = nullptr;
    params.clear();
    appFrameParam = fpsParam = cameraClipRangeParam = nullptr;
    textureBuffers.clear();
    passData.clear();
    sourceDepTextureInfoParams.clear();
    passFgRoots.clear();
    sourceTexture = outputTexture = nullptr;
    ownsOutputTexture = false;
}

void Q3DSSceneManager::setupEffectTextureBuffer(Q3DSEffectAttached::TextureBuffer *tb,
                                                const Q3DSMaterial::PassBuffer &bufDesc,
                                                Q3DSLayerNode *layer3DS)
{
    Qt3DRender::QAbstractTexture *texture = new Qt3DRender::QTexture2D(m_rootEntity);
    m_profiler->trackNewObject(texture, Q3DSProfiler::Texture2DObject,
                               "Effect buffer %s", qPrintable(bufDesc.name()));
    tb->texture = texture;

    switch (bufDesc.filter()) {
    case Q3DSMaterial::Nearest:
        texture->setMinificationFilter(Qt3DRender::QAbstractTexture::Nearest);
        texture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Nearest);
        break;
    default:
        texture->setMinificationFilter(Qt3DRender::QAbstractTexture::Linear);
        texture->setMagnificationFilter(Qt3DRender::QAbstractTexture::Linear);
        break;
    }

    Qt3DRender::QTextureWrapMode wrapMode;
    switch (bufDesc.wrap()) {
    case Q3DSMaterial::Repeat:
        wrapMode.setX(Qt3DRender::QTextureWrapMode::Repeat);
        wrapMode.setY(Qt3DRender::QTextureWrapMode::Repeat);
        break;
    default:
        wrapMode.setX(Qt3DRender::QTextureWrapMode::ClampToEdge);
        wrapMode.setY(Qt3DRender::QTextureWrapMode::ClampToEdge);
        break;
    }
    texture->setWrapMode(wrapMode);

    switch (bufDesc.textureFormat()) {
    case Q3DSMaterial::Depth24Stencil8:
        texture->setFormat(Qt3DRender::QAbstractTexture::D24S8);
        break;
    case Q3DSMaterial::RGB8:
        texture->setFormat(Qt3DRender::QAbstractTexture::RGB8_UNorm);
        break;
    case Q3DSMaterial::Alpha8:
        texture->setFormat(Qt3DRender::QAbstractTexture::AlphaFormat);
        break;
    case Q3DSMaterial::Luminance8:
        texture->setFormat(Qt3DRender::QAbstractTexture::LuminanceFormat);
        break;
    case Q3DSMaterial::LuminanceAlpha8:
        texture->setFormat(Qt3DRender::QAbstractTexture::LuminanceAlphaFormat);
        break;
    case Q3DSMaterial::RG8:
        texture->setFormat(Qt3DRender::QAbstractTexture::RG8_UNorm);
        break;
    case Q3DSMaterial::RGB565:
        texture->setFormat(Qt3DRender::QAbstractTexture::R5G6B5);
        break;
    case Q3DSMaterial::RGBA5551:
        texture->setFormat(Qt3DRender::QAbstractTexture::RGB5A1);
        break;
    case Q3DSMaterial::RGBA16F:
        texture->setFormat(Qt3DRender::QAbstractTexture::RGBA16F);
        break;
    case Q3DSMaterial::RG16F:
        texture->setFormat(Qt3DRender::QAbstractTexture::RG16F);
        break;
    case Q3DSMaterial::RGBA32F:
        texture->setFormat(Qt3DRender::QAbstractTexture::RGBA32F);
        break;
    case Q3DSMaterial::RG32F:
        texture->setFormat(Qt3DRender::QAbstractTexture::RG32F);
        break;
    default: // incl. Unknown that is set for "source"
        texture->setFormat(Qt3DRender::QAbstractTexture::RGBA8_UNorm);
        break;
    }

    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
    float sizeMultiplier = bufDesc.size();
    auto sizeCalc = [texture, layerData, sizeMultiplier](Q3DSLayerNode*) {
        const QSize sz = safeLayerPixelSize(layerData->layerSize, 1); // SSAA scale factor no longer plays a role
        texture->setWidth(int(sz.width() * sizeMultiplier));
        texture->setHeight(int(sz.height() * sizeMultiplier));
    };
    prepareSizeDependentTexture(texture, layer3DS, sizeCalc, Q3DSLayerAttached::SizeManagedTexture::CustomSizeCalculation);
    sizeCalc(layer3DS);
}

void Q3DSSceneManager::createEffectBuffers(Q3DSEffectInstance *eff3DS)
{
    Q3DSEffectAttached *effData = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
    const Q3DSEffect *effDesc = eff3DS->effect();
    const QMap<QString, Q3DSMaterial::PassBuffer> &bufDescs = effDesc->buffers();
    for (const Q3DSMaterial::PassBuffer &bufDesc : bufDescs) {
        if (bufDesc.passBufferType() == Q3DSMaterial::BufferType) {
            if (effData->textureBuffers.contains(bufDesc.name())) {
                qWarning("Texture Buffer name %s reused", qPrintable(bufDesc.name()));
                continue;
            }
            Q3DSEffectAttached::TextureBuffer tb;
            tb.hasSceneLifetime = bufDesc.hasSceneLifetime();
            setupEffectTextureBuffer(&tb, bufDesc, effData->layer3DS);
            effData->textureBuffers.insert(bufDesc.name(), tb);
        } else {
            qWarning("Effect %s: Unsupported buffer type", eff3DS->id().constData());
        }
    }
}

// called once on load from applyEffect, and then every time an effect property has changed
void Q3DSSceneManager::updateEffect(Q3DSEffectInstance *eff3DS)
{
    Q3DSEffectAttached *effData = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
    if (!effData->active)
        return;

    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(effData->layer3DS->attached());

    QVector2D cameraClipRange(0, 5000);
    if (layerData->cam3DS) {
        cameraClipRange.setX(layerData->cam3DS->clipNear());
        cameraClipRange.setY(layerData->cam3DS->clipFar());
    }
    effData->cameraClipRangeParam->setValue(cameraClipRange);

    forAllCustomProperties(eff3DS, [effData, eff3DS, this](const QString &propKey, const QVariant &propValue, const Q3DSMaterial::PropertyElement &) {
        if (!effData->params.contains(propKey))
            return;

        Q3DSCustomPropertyParameter &p(effData->params[propKey]);
        if (propValue == p.inputValue)
            return;

        p.inputValue = propValue;

        switch (p.meta.type) {
        case Q3DS::Texture:
        {
            createCustomPropertyTexture(p, eff3DS->id());
        }
            break;

        // ### others?

        default:
            p.param->setValue(p.inputValue);
            break;
        }
    });
}

// called after each frame
void Q3DSSceneManager::updateEffectForNextFrame(Q3DSEffectInstance *eff3DS, qint64 nextFrameNo)
{
    Q3DSEffectAttached *effData = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
    if (!effData->active)
        return;

    effData->appFrameParam->setValue(float(nextFrameNo));
    effData->fpsParam->setValue(60.0f); // heh
    for (const auto &pd : effData->passData) {
        const bool isPremultiplied = false;
        pd.texture0InfoParam->setValue(QVector4D(pd.passInput->width(),
                                                 pd.passInput->height(),
                                                 isPremultiplied ? 1 : 0,
                                                 0));
        pd.destSizeParam->setValue(QVector2D(pd.passOutput->width(), pd.passOutput->height()));
    }
    for (const auto &tb : effData->textureBuffers) {
        for (Qt3DRender::QParameter *param : tb.textureInfoParams)
            setTextureInfoUniform(param, tb.texture);
    }
    for (const auto &p : effData->sourceDepTextureInfoParams)
        setTextureInfoUniform(p.first, p.second);
}

namespace {
Q3DSLayerNode *getLayerForObject(Q3DSGraphObject *object) {
    Q3DSGraphObject *target = object;
    while (target) {
        if (target->type() == Q3DSGraphObject::Layer)
            return static_cast<Q3DSLayerNode *>(target);
        target = target->parent();
    }
    return nullptr;
}

bool isLightScopeValid(Q3DSGraphObject *target, Q3DSLayerNode *layer) {
    if (target->type() == Q3DSGraphObject::Scene)
        return false;
    if (getLayerForObject(target) == layer)
        return true;
    return false;
}
}

void Q3DSSceneManager::gatherLights(Q3DSLayerNode *layer)
{
    if (!layer)
        return;

    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer->attached());
    QSet<Q3DSNodeAttached::LightsData*> resetMap;

    Q3DSUipPresentation::forAllObjectsInSubTree(layer, [layer,layerData,&resetMap](Q3DSGraphObject *object){
        if (object->type() == Q3DSGraphObject::Light) {
            Q3DSLightNode *light3DS = static_cast<Q3DSLightNode *>(object);
            Q3DSNodeAttached::LightsData *lightData = layerData->lightsData.data();
            // If this light is a scoped light, setup the scoped node with lightsData
            if (light3DS->scope() && isLightScopeValid(light3DS->scope(), layer)) {
                Q3DSNodeAttached *scopeData = static_cast<Q3DSNodeAttached *>(light3DS->scope()->attached());
                if (!scopeData->lightsData) {
                    scopeData->lightsData.reset(new Q3DSNodeAttached::LightsData);
                    // new lightData doesn't need to be reset
                    resetMap.insert(scopeData->lightsData.data());
                }
                lightData = scopeData->lightsData.data();
            }
            // reset lightData if necessary
            if (!resetMap.contains(lightData)) {
                lightData->lightNodes.clear();
                lightData->allLights.clear();
                lightData->nonAreaLights.clear();
                lightData->areaLights.clear();
                resetMap.insert(lightData);
            }

            if (light3DS->flags().testFlag(Q3DSNode::Active)) {
                Q3DSLightAttached *data = static_cast<Q3DSLightAttached *>(light3DS->attached());
                Q_ASSERT(data);
                lightData->lightNodes.append(light3DS);
                lightData->allLights.append(data->lightSource);
                if (light3DS->lightType() == Q3DSLightNode::Area)
                    lightData->areaLights.append(data->lightSource);
                else
                    lightData->nonAreaLights.append(data->lightSource);
            }
        }
    });
}

QVector<Qt3DRender::QParameter*> Q3DSSceneManager::prepareSeparateLightUniforms(const QVector<Q3DSLightSource> &allLights, const QString &lightsUniformName)
{
    QVector<Qt3DRender::QParameter*> params;
    for (int i = 0; i < allLights.size(); ++i) {
        if (i >= m_gfxLimits.maxLightsPerLayer)
            break;

        const QString uniformPrefix = lightsUniformName + QStringLiteral("[") + QString::number(i) + QStringLiteral("].");

        // position
        allLights[i].positionParam->setName(uniformPrefix + QStringLiteral("position"));
        params.append(allLights[i].positionParam);

        // direction
        allLights[i].directionParam->setName(uniformPrefix + QStringLiteral("direction"));
        params.append(allLights[i].directionParam);

        // up
        allLights[i].upParam->setName(uniformPrefix + QStringLiteral("up"));
        params.append(allLights[i].upParam);

        // right
        allLights[i].rightParam->setName(uniformPrefix + QStringLiteral("right"));
        params.append(allLights[i].rightParam);

        // diffuse
        allLights[i].diffuseParam->setName(uniformPrefix + QStringLiteral("diffuse"));
        params.append(allLights[i].diffuseParam);

        // ambient
        allLights[i].ambientParam->setName(uniformPrefix + QStringLiteral("ambient"));
        params.append(allLights[i].ambientParam);

        // specular
        allLights[i].specularParam->setName(uniformPrefix + QStringLiteral("specular"));
        params.append(allLights[i].specularParam);

        // spotExponent (not used)
        //allLights[i].spotExponentParam->setName(uniformPrefix + QStringLiteral("spotExponent"));
        //params.append(allLights[i].spotExponentParam);

        // spotCutoff (not used)
        //allLights[i].spotCutoffParam->setName(uniformPrefix + QStringLiteral("spotCutoff"));
        //params.append(allLights[i].spotCutoffParam);

        // constantAttenuation
        allLights[i].constantAttenuationParam->setName(uniformPrefix + QStringLiteral("constantAttenuation"));
        params.append(allLights[i].constantAttenuationParam);

        // linearAttenuation
        allLights[i].linearAttenuationParam->setName(uniformPrefix + QStringLiteral("linearAttenuation"));
        params.append(allLights[i].linearAttenuationParam);

        // quadraticAttenuation
        allLights[i].quadraticAttenuationParam->setName(uniformPrefix + QStringLiteral("quadraticAttenuation"));
        params.append(allLights[i].quadraticAttenuationParam);

        // width
        allLights[i].widthParam->setName(uniformPrefix + QStringLiteral("width"));
        params.append(allLights[i].widthParam);

        // height
        allLights[i].heightParam->setName(uniformPrefix + QStringLiteral("height"));
        params.append(allLights[i].heightParam);

        // shadowControls
        allLights[i].shadowControlsParam->setName(uniformPrefix + QStringLiteral("shadowControls"));
        params.append(allLights[i].shadowControlsParam);

        // shadowView
        allLights[i].shadowViewParam->setName(uniformPrefix + QStringLiteral("shadowView"));
        params.append(allLights[i].shadowViewParam);

        // shadowIdx
        allLights[i].shadowIdxParam->setName(uniformPrefix + QStringLiteral("shadowIdx"));
        params.append(allLights[i].shadowIdxParam);
    }
    return params;
}

void Q3DSSceneManager::updateLightsParams(const QVector<Q3DSNodeAttached::LightsData *> &lights, Q3DSNodeAttached::LightsData *dst)
{
    QVector3D lightAmbientTotal;
    for (auto lightsDataSub : lights) {
        for (auto light : lightsDataSub->lightNodes) {
            lightAmbientTotal += QVector3D(light->ambient().redF(),
                                           light->ambient().greenF(),
                                           light->ambient().blueF());
        }
    }

    if (!dst->lightAmbientTotalParamenter) {
        dst->lightAmbientTotalParamenter = new Qt3DRender::QParameter;
        dst->lightAmbientTotalParamenter->setName(QLatin1String("light_ambient_total"));
    }

    dst->lightAmbientTotalParamenter->setValue(lightAmbientTotal);
}

void Q3DSSceneManager::updateLightsBuffer(const QVector<Q3DSLightSource> &lights, Qt3DRender::QBuffer *uniformBuffer)
{
    if (!uniformBuffer) // no models in the layer -> no buffers -> handle gracefully
        return; // can also get here when no custom material-specific buffers exist for a given layer because it only uses default material, this is normal

    Q_ASSERT(sizeof(Q3DSLightSourceData) == 240);
    // uNumLights takes 4 * sizeof(qint32) since the next member must be 4N (16 bytes) aligned
    const int uNumLightsSize = 4 * sizeof(qint32);
    QByteArray lightBufferData((sizeof(Q3DSLightSourceData) * m_gfxLimits.maxLightsPerLayer) + uNumLightsSize, '\0');
    // Set the number of lights
    qint32 *numLights = reinterpret_cast<qint32 *>(lightBufferData.data());
    *numLights = lights.count();
    // Set the lightData
    Q3DSLightSourceData *lightData = reinterpret_cast<Q3DSLightSourceData *>(lightBufferData.data() + uNumLightsSize);
    for (int i = 0; i < lights.count(); ++i) {
        if (i >= m_gfxLimits.maxLightsPerLayer)
            break;
        lightData[i].m_position = lights[i].positionParam->value().value<QVector4D>();
        lightData[i].m_direction = lights[i].directionParam->value().value<QVector3D>().toVector4D();
        lightData[i].m_up = lights[i].upParam->value().value<QVector4D>();
        lightData[i].m_right = lights[i].rightParam->value().value<QVector4D>();
        // diffuse
        // Normally this is where the materials diffuse color would be mixed with the light
        // diffuse color, but since we can't update the uniformbuffer between draw calls yet
        // This is moved back into the shader for now.
        //auto lightDiffuseColor = lights[i].diffuseParam->value().value<QColor>();
        //            lightData[i].m_diffuse = QVector4D(materialDiffuseColor.redF() * lightDiffuseColor.redF(),
        //                                               materialDiffuseColor.greenF() * lightDiffuseColor.greenF(),
        //                                               materialDiffuseColor.blueF() * lightDiffuseColor.blueF(),
        //                                               1.0f);
        lightData[i].m_diffuse = lights[i].diffuseParam->value().value<QVector4D>();
        // ambient
        lightData[i].m_ambient = lights[i].ambientParam->value().value<QVector4D>();
        // specular
        lightData[i].m_specular = lights[i].specularParam->value().value<QVector4D>();
        // spotExponent
        // TODO spotExponent
        // spotCutoff
        // TODO spotCutfoff
        // constantAttenuation
        lightData[i].m_constantAttenuation = lights[i].constantAttenuationParam->value().toFloat();
        // linearAttenuation
        lightData[i].m_linearAttenuation = lights[i].linearAttenuationParam->value().toFloat();
        // quadraticAttenuation
        lightData[i].m_quadraticAttenuation = lights[i].quadraticAttenuationParam->value().toFloat();
        // range
        // TODO range
        // width
        lightData[i].m_width = lights[i].widthParam->value().toFloat();
        // height
        lightData[i].m_height = lights[i].heightParam->value().toFloat();
        // shadowControls
        lightData[i].m_shadowControls = lights[i].shadowControlsParam->value().value<QVector4D>();
        // shadowView
        memcpy(lightData[i].m_shadowView, lights[i].shadowViewParam->value().value<QMatrix4x4>().constData(), 16 * sizeof(float));
        // shadowIdx
        lightData[i].m_shadowIdx = lights[i].shadowIdxParam->value().toInt();
    }
    uniformBuffer->setData(lightBufferData);
}

void Q3DSSceneManager::updateModel(Q3DSModelNode *model3DS)
{
    Q3DSModelAttached *data = static_cast<Q3DSModelAttached *>(model3DS->attached());
    Q_ASSERT(data);

    if (data->frameDirty.testFlag(Q3DSGraphObjectAttached::GlobalOpacityDirty)) {
        // Apply opaque or transparent pass tag to the submeshes.
        retagSubMeshes(model3DS);
        // The model's and material's opacity are both used to determine the final
        // opacity that goes to the shader. Update this.
        Q3DSModelAttached *data = static_cast<Q3DSModelAttached *>(model3DS->attached());
        for (Q3DSModelAttached::SubMesh &sm : data->subMeshes) {
            if (sm.resolvedMaterial->type() == Q3DSGraphObject::DefaultMaterial) {
                auto m = static_cast<Q3DSDefaultMaterial *>(sm.resolvedMaterial);
                auto d = static_cast<Q3DSDefaultMaterialAttached *>(m->attached());
                if (d) {
                    auto perModelDataIt = d->perModelData.find(model3DS);
                    if (perModelDataIt != d->perModelData.end()) {
                        perModelDataIt->combinedOpacity = clampOpacity(data->globalOpacity * (m->opacity() / 100.0f));
                        QVector4D c = perModelDataIt->materialDiffuseParam->value().value<QVector4D>();
                        c.setW(perModelDataIt->combinedOpacity);
                        perModelDataIt->materialDiffuseParam->setValue(c);
                    }
                }
            }
        }
    }

    if (data->frameChangeFlags & Q3DSModelNode::MeshChanges) {
        model3DS->resolveReferences(*m_presentation); // make mesh() return the new submesh list
        qCDebug(lcPerf, "Rebuilding submeshes for %s due to mesh change", model3DS->id().constData());
        rebuildModelSubMeshes(model3DS);
        rebuildModelMaterial(model3DS);
    }
}

// This method is used to get the lights based on the scope of current object
QVector<Q3DSNodeAttached::LightsData *> Q3DSSceneManager::getLightsDataForNode(Q3DSGraphObject *object)
{
    QVector<Q3DSNodeAttached::LightsData *> lightsDatas;
    Q3DSGraphObject *target = object;
    while (target && target->isNode()) {
        auto targetData = static_cast<Q3DSNodeAttached*>(target->attached());
        if (targetData)
            if (targetData->lightsData)
                lightsDatas.append(targetData->lightsData.data());
        target = target->parent();
    }
    return lightsDatas;
}

// when entering a slide, or when animating a property
void Q3DSSceneManager::handlePropertyChange(Q3DSGraphObject *obj, const QSet<QString> &keys, int changeFlags)
{
    // 'keys' is not used here, rely rather on the pre-baked changeFlags to
    // determine certain special cases. For others it is enough to
    // know that _something_ has changed.
    Q_UNUSED(keys);

    Q3DSGraphObjectAttached *data = obj->attached();
    if (!data) // Qt3D stuff not yet built for this object -> nothing to do
        return;

    // all actual processing must be deferred to updateSubTreeRecursive()
    switch (obj->type()) {
    case Q3DSGraphObject::Layer:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::LayerDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Camera:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::CameraDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;

    case Q3DSGraphObject::DefaultMaterial:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::DefaultMaterialDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::CustomMaterial:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::CustomMaterialDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::ReferencedMaterial:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::ReferencedMaterialDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Effect:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::EffectDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Behavior:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::BehaviorDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Image:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::ImageDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;

    case Q3DSGraphObject::Group:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::GroupDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Component:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::ComponentDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Light:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::LightDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Model:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::ModelDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Text:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::TextDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Alias:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::AliasDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    case Q3DSGraphObject::Scene:
    {
        data->frameDirty |= Q3DSGraphObjectAttached::SceneDirty;
        data->frameChangeFlags |= changeFlags;
    }
        break;
    default:
        break;
    }

    // Note the lack of call to syncScene(). That happens in a QFrameAction once per frame.
}

void Q3DSSceneManager::syncScene()
{
    m_subTreesWithDirtyLights.clear();
    m_pendingDefMatRebuild.clear();

    setPendingVisibilities();

    updateSubTreeRecursive(m_scene);

    QSet<Q3DSModelNode *> needsRebuild;

    for (const SubTreeWithDirtyLight &dl : m_subTreesWithDirtyLights) {
        Q3DSGraphObject *subtreeObject = dl.first;
        const bool lightVisibilityChanged = dl.second;
        // Attempt to update all buffers, if some do not exist (null) that's fine too.
        auto lights = getLightsDataForNode(subtreeObject);

        QVector<Q3DSLightSource> allLights;
        QVector<Q3DSLightSource> nonAreaLights;
        QVector<Q3DSLightSource> areaLights;

        if (!lights.isEmpty()) {
            Q3DSNodeAttached::LightsData *lightsData = lights.first();
            for (auto light : lights) {
                allLights.append(light->allLights);
                nonAreaLights.append(light->nonAreaLights);
                areaLights.append(light->areaLights);
            }
            updateLightsBuffer(allLights, lightsData->allLightsConstantBuffer);
            updateLightsBuffer(nonAreaLights, lightsData->nonAreaLightsConstantBuffer);
            updateLightsBuffer(areaLights, lightsData->areaLightsConstantBuffer);
        }

        bool smDidChange = false;
        auto layer3DS = getLayerForObject(subtreeObject);
        updateShadowMapStatus(layer3DS, &smDidChange);
        if (smDidChange) {
            Q3DSUipPresentation::forAllModels(layer3DS->firstChild(),
                                           [&needsRebuild](Q3DSModelNode *model3DS) { needsRebuild.insert(model3DS); },
                                           true); // include hidden ones too
        }

        bool hasDefaultMaterial = false;
        Q3DSUipPresentation::forAllObjectsInSubTree(subtreeObject, [&hasDefaultMaterial, &needsRebuild, lightVisibilityChanged](Q3DSGraphObject *obj) {
            if (obj->type() == Q3DSGraphObject::DefaultMaterial) {
                hasDefaultMaterial = true;
                // in addition to shadow or ssao changes, the default material's shader
                // code is dependent on the number of lights as well, so may need to rebuild materials...
                if (lightVisibilityChanged) { // ...but only when it's sure the number of lights has changed
                    if (obj->parent() && obj->parent()->type() == Q3DSGraphObject::Model)
                        needsRebuild.insert(static_cast<Q3DSModelNode *>(obj->parent()));
                }
            }
        });
        if (hasDefaultMaterial) {
            // update uniforms like ambient total
            if (!lights.isEmpty())
                updateLightsParams(lights, lights.first());
        }
    }

    for (Q3DSDefaultMaterial *mat3DS : m_pendingDefMatRebuild) {
        if (Q3DSDefaultMaterialAttached *matData = static_cast<Q3DSDefaultMaterialAttached *>(mat3DS->attached())) {
            for (auto it = matData->perModelData.cbegin(), itEnd = matData->perModelData.cend(); it != itEnd; ++it)
                needsRebuild.insert(it.key());
        }
    }

    for (Q3DSModelNode *model3DS : needsRebuild)
        rebuildModelMaterial(model3DS);

    m_engine->finishAsyncLoad(false);
    Q3DSImageManager::instance().finishAsyncLoad(false);
}

void Q3DSSceneManager::setPendingVisibilities()
{
    const bool noAnimations = currentSlide() && (currentSlide()->animations().isEmpty()
                                                 && (currentSlide()->parent() ? static_cast<Q3DSSlide *>(currentSlide()->parent())->animations().isEmpty() : true));

    QVector<Q3DSLayerNode *> layerNodes;
    for (auto it = m_pendingObjectVisibility.constBegin(); it != m_pendingObjectVisibility.constEnd(); ++it) {
        if (it.key()->isNode() && it.key()->type() != Q3DSGraphObject::Layer && it.key()->type() != Q3DSGraphObject::Camera) {
            Q3DSNode *node = static_cast<Q3DSNode *>(it.key());
            const bool visible = (it.value() && node->flags().testFlag(Q3DSNode::Active));
            it.key()->attached()->visibilityTag = visible ? Q3DSGraphObjectAttached::Visible
                                                          : Q3DSGraphObjectAttached::Hidden;
            setNodeVisibility(node, visible); // will call updateGlobals() as well
        } else if (it.key()->type() == Q3DSGraphObject::Effect){
            Q3DSEffectInstance *effect = static_cast<Q3DSEffectInstance *>(it.key());
            Q3DSEffectAttached *data = effect->attached<Q3DSEffectAttached>();
            if (data) {
                data->visibilityTag = (it.value() && effect->eyeballEnabled()) ? Q3DSGraphObjectAttached::Visible
                                                                               : Q3DSGraphObjectAttached::Hidden;
                updateEffectStatus(effect->attached<Q3DSEffectAttached>()->layer3DS);
            }
        } else if (it.key()->type() == Q3DSGraphObject::Layer) {
            Q3DSLayerNode *layer3DS = static_cast<Q3DSLayerNode *>(it.key());
            Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
            if (data) {
                const bool enabled = it.value() && layer3DS->flags().testFlag(Q3DSNode::Active);
                data->visibilityTag = enabled ? Q3DSGraphObjectAttached::Visible
                                              : Q3DSGraphObjectAttached::Hidden;
                // defer updateGlobals for layers until we know the status of the camera.
                layerNodes.push_back(static_cast<Q3DSLayerNode *>(it.key()));
                if (data->compositorEntity) // may not exist if this is still buildLayer()
                    data->compositorEntity->setEnabled(enabled);
            }
        } else if (it.key()->type() == Q3DSGraphObject::Camera) {
            Q3DSCameraNode *cam3DS = static_cast<Q3DSCameraNode *>(it.key());
            Q3DSCameraAttached *data = static_cast<Q3DSCameraAttached *>(cam3DS->attached());
            if (data) {
                const bool visible = (it.value() && cam3DS->flags().testFlag(Q3DSNode::Active));
                data->visibilityTag = visible ? Q3DSGraphObjectAttached::Visible
                                              : Q3DSGraphObjectAttached::Hidden;
                updateGlobals(cam3DS, UpdateGlobalsRecursively | UpdateGlobalsSkipTransform);
                // leave rechoosing the camera to handleNodeGlobalChange()
            }
        } else {
            // nothing to do for materials, the slideplayer may try to manage
            // visibility of those as well (since they are typically in the
            // slides' objects() lists) but on the scene level that is
            // meaningless.
        }

        // So... If there's no animations there won't be any updates to the nodes, which means they will
        // never get marked as dirty and therefore not update correctly. In most cases this is fine,
        // if there's no animations there's no changes, but there's one exception, and that's visibility
        // updates due to start and end times for a node, these still need to cause an update when there's no
        // animations and that's why we have this funky looking call to notifyPropertyChanges() here.
        if (noAnimations)
            it.key()->notifyPropertyChanges({{QString()}}, 0);
    }

    for (const auto layer : qAsConst(layerNodes))
        updateGlobals(layer, UpdateGlobalsRecursively | UpdateGlobalsSkipTransform);

    m_pendingObjectVisibility.clear();
}

static Q3DSComponentNode *findNextComponentParent(Q3DSComponentNode *component)
{
    auto target = component->parent();
    while (target) {
        Q3DSGraphObject *parent = component->parent();
        if (parent->type() == Q3DSGraphObject::Component)
            return static_cast<Q3DSComponentNode *>(parent);
        target = target->parent();
    }
    return nullptr;
}

bool Q3DSSceneManager::isComponentVisible(Q3DSComponentNode *component)
{
    bool visible = true;
    if (component) {
        auto targetComponent = component;
        do {
            auto parentComponent = findNextComponentParent(targetComponent);
            Q3DSSlide *parentMaster = parentComponent ? parentComponent->masterSlide () : m_masterSlide;
            Q3DSSlide *parentCurrentSlide = parentComponent ? parentComponent->currentSlide() : m_currentSlide;
            if (!parentMaster->objects().contains(targetComponent) && !parentCurrentSlide->objects().contains(targetComponent)) {
                visible = false;
                break;
            }
            targetComponent = parentComponent;
        } while (targetComponent);
    }

    return visible;
}

void Q3DSSceneManager::prepareNextFrame()
{
    m_wasDirty = false;
    Q3DSUipPresentation::forAllLayers(m_scene, [](Q3DSLayerNode *layer3DS) {
        static_cast<Q3DSLayerAttached *>(layer3DS->attached())->wasDirty = false;
    });

    syncScene();

    qint64 nextFrameNo = m_frameUpdater->frameCounter() + 1;
    Q3DSUipPresentation::forAllLayers(m_scene, [this, nextFrameNo](Q3DSLayerNode *layer3DS) {
        // Dirty flags now up-to-date -> update progressive AA status
        bool paaActive = false;
        if (layer3DS->progressiveAA() != Q3DSLayerNode::NoPAA)
            paaActive = updateProgressiveAA(layer3DS);
        // if progAA is not in progress then maybe we want temporal AA
        if (layer3DS->layerFlags().testFlag(Q3DSLayerNode::TemporalAA) && !paaActive)
            updateTemporalAA(layer3DS);

        // Post-processing effects have uniforms that need to be updated on every frame.
        Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
        if (layerData) {
            if (!m_engine->isStereoscopic())
                for (Q3DSEffectInstance *eff3DS : qAsConst(layerData->eyeMono->effectData.effects))
                    updateEffectForNextFrame(eff3DS, nextFrameNo);
#if 0
            // Note: Effects currently disabled for stereoscopic views
            if (m_engine->isStereoscopic()) {
                for (Q3DSEffectInstance *eff3DS : qAsConst(layerData->eyeLeft->effectData.effects))
                    updateEffectForNextFrame(eff3DS, nextFrameNo);
                for (Q3DSEffectInstance *eff3DS : qAsConst(layerData->eyeRight->effectData.effects))
                    updateEffectForNextFrame(eff3DS, nextFrameNo);
            }
#endif
        }
    });

    static const bool layerCacheDebug = qEnvironmentVariableIntValue("Q3DS_DEBUG") >= 2;
    Q3DSUipPresentation::forAllLayers(m_scene, [this](Q3DSLayerNode *layer3DS) {
        Q3DSLayerAttached *layerData = layer3DS->attached<Q3DSLayerAttached>();
        if (!layerData->layerFgRoot) // layers with a subpresentation won't have this
            return;

        // m_layerCacheDeps holds scenemanagers for subpresentations whose
        // result is used as texture maps by us. Best we can do is to check the
        // global dirty flag and prevent any layer caching to kick in.
        bool subDirty = false;
        for (Q3DSSceneManager *subSceneManager : m_layerCacheDeps) {
            if (subSceneManager->m_wasDirty) {
                subDirty = true;
                break;
            }
        }
        // Any QML subpresentations used as texture map disables layer caching
        // altogether since we have no idea when their content changes.
        if (m_hasQmlSubPresAsTextureMap)
            subDirty = true;

        // Layers having an active post-processing effect relying on time (like
        // the AppFrame uniform) cannot be cached since the effect needs
        // continuous updates (and in 3DS2 the effect's output is part of the
        // layer's final texture that is "cached").
        // Note: Testing just mono eye should be enough, effects among eyes are same
        const bool hasTimeDependentEffect = layerData->effectActive
                && (layerData->eyeMono->effectData.combinedEffectFlags.testFlag(Q3DSEffect::ReliesOnTime));

        if (!layerData->wasDirty && !m_layerUncachePending && !subDirty && !hasTimeDependentEffect) {
            ++layerData->nonDirtyRenderCount;
            if (layerData->nonDirtyRenderCount > LAYER_CACHING_THRESHOLD) {
                layerData->nonDirtyRenderCount = 0;
                if (m_layerCaching && layerData->layerFgRoot->parentNode() != layerData->layerFgDummyParent) {
                    if (layerCacheDebug)
                        qCDebug(lcScene, "Switching %s to cached", layer3DS->id().constData());
                    layerData->layerFgRoot->setParent(layerData->layerFgDummyParent);
                }
            }
        } else {
            layerData->nonDirtyRenderCount = 0;
            if (layerData->layerFgRoot->parentNode() != layerData->layerFgRootParent) {
                if (layerCacheDebug)
                    qCDebug(lcScene, "Switching %s to non-cached", layer3DS->id().constData());
                layerData->layerFgRoot->setParent(layerData->layerFgRootParent);
            }
        }
    });
    m_layerUncachePending = false;
}

// Now to the nightmare of maintaining per-layer dirty flags. The scene-wide
// m_wasDirty flag is simple but ultimately of little value since techniques
// like progressive or temporal AA need to know the status on a per-layer basis.

// For nodes there is a link to the layer, but no such thing for non-node
// objects (e.g. Image, DefaultMaterial), and there really cannot be due to
// references. So e.g. for Image, the correct approach is to go through its
// referencingMaterials set, follow the model3DS link in those materials, and
// take the layer3DS from that.

static void markLayerForObjectDirty(Q3DSGraphObject *obj)
{
    auto findLayersForMat = [](Q3DSGraphObject *obj) {
        Q_ASSERT(obj->type() == Q3DSGraphObject::DefaultMaterial || obj->type() == Q3DSGraphObject::CustomMaterial);
        QVector<Q3DSLayerNode *> layers;
        Q3DSMaterialAttached *data = static_cast<Q3DSMaterialAttached *>(obj->attached());
        if (data) {
            for (auto it = data->perModelData.cbegin(), itEnd = data->perModelData.cend(); it != itEnd; ++it) {
                Q3DSModelNode *model3DS = it.key();
                Q3DSNodeAttached *ndata = static_cast<Q3DSNodeAttached *>(model3DS->attached());
                layers.append(ndata->layer3DS);
            }
        }
        return layers;
    };
    auto markLayerDirty = [](Q3DSLayerNode *layer3DS) {
        static_cast<Q3DSLayerAttached *>(layer3DS->attached())->wasDirty = true;
    };

    if (obj->type() == Q3DSGraphObject::Layer) {
        markLayerDirty(static_cast<Q3DSLayerNode *>(obj));
    } else if (obj->isNode()) {
        Q3DSNodeAttached *data = static_cast<Q3DSNodeAttached *>(obj->attached());
        if (data && data->layer3DS)
            markLayerDirty(data->layer3DS);
    } else if (obj->type() == Q3DSGraphObject::Image) {
        Q3DSImageAttached *data = static_cast<Q3DSImageAttached *>(obj->attached());
        for (Q3DSDefaultMaterial *mat3DS : qAsConst(data->referencingDefaultMaterials)) {
            for (Q3DSLayerNode *layer3DS : findLayersForMat(mat3DS))
                markLayerDirty(layer3DS);
        }
    } else if (obj->type() == Q3DSGraphObject::DefaultMaterial || obj->type() == Q3DSGraphObject::CustomMaterial) {
        for (Q3DSLayerNode *layer3DS : findLayersForMat(obj))
            markLayerDirty(layer3DS);
    } else if (obj->type() == Q3DSGraphObject::ReferencedMaterial) {
        Q3DSGraphObject *targetMat = static_cast<Q3DSReferencedMaterial *>(obj)->referencedMaterial();
        if (targetMat && targetMat->type() != Q3DSGraphObject::ReferencedMaterial) {
            for (Q3DSLayerNode *layer3DS : findLayersForMat(targetMat))
                markLayerDirty(layer3DS);
        }
    } else if (obj->type() == Q3DSGraphObject::Effect) {
        Q3DSEffectAttached *data = static_cast<Q3DSEffectAttached *>(obj->attached());
        if (data && data->layer3DS)
            markLayerDirty(data->layer3DS);
    }
}

void Q3DSSceneManager::updateSubTreeRecursive(Q3DSGraphObject *obj)
{
    switch (obj->type()) {
    case Q3DSGraphObject::Group:
        Q_FALLTHROUGH();
    case Q3DSGraphObject::Alias:
        Q_FALLTHROUGH();
    case Q3DSGraphObject::Component:
    {
        // Group, Alias, and Component inherit all interesting properties from Node
        Q3DSNode *node = static_cast<Q3DSNode *>(obj);
        Q3DSNodeAttached *data = static_cast<Q3DSNodeAttached *>(obj->attached());
        if (data)
            updateNodeFromChangeFlags(node, data->transform, data->frameChangeFlags);
    }
        break;
    case Q3DSGraphObject::Text:
    {
        Q3DSTextNode *text3DS = static_cast<Q3DSTextNode *>(obj);
        Q3DSTextAttached *data = static_cast<Q3DSTextAttached *>(text3DS->attached());
        if (data) {
            updateNodeFromChangeFlags(text3DS, data->transform, data->frameChangeFlags);
            if (data->frameDirty & (Q3DSGraphObjectAttached::TextDirty | Q3DSGraphObjectAttached::GlobalOpacityDirty)) {
                const bool needsNewImage = data->frameChangeFlags & Q3DSTextNode::TextureImageDepChanges;
                updateText(text3DS, needsNewImage);
                m_wasDirty = true;
                markLayerForObjectDirty(text3DS);
            }
        }
    }
        break;
    case Q3DSGraphObject::Light:
    {
        Q3DSLightNode *light3DS = static_cast<Q3DSLightNode *>(obj);
        Q3DSLightAttached *data = static_cast<Q3DSLightAttached *>(light3DS->attached());
        if (data) {
            updateNodeFromChangeFlags(light3DS, data->transform, data->frameChangeFlags);
            if (data->frameDirty & (Q3DSGraphObjectAttached::LightDirty | Q3DSGraphObjectAttached::GlobalTransformDirty)) {
                setLightProperties(light3DS);
                if (!(data->frameChangeFlags & Q3DSNode::EyeballChanges)) {// already done if eyeball changed
                    if (light3DS->scope() && isLightScopeValid(light3DS->scope(), data->layer3DS))
                        m_subTreesWithDirtyLights.insert(SubTreeWithDirtyLight(light3DS->scope(), false));
                    else
                        m_subTreesWithDirtyLights.insert(SubTreeWithDirtyLight(data->layer3DS, false));
                }
                m_wasDirty = true;
                markLayerForObjectDirty(light3DS);
            }
        }
    }
        break;
    case Q3DSGraphObject::Model:
    {
        Q3DSModelNode *model3DS = static_cast<Q3DSModelNode *>(obj);
        Q3DSModelAttached *data = static_cast<Q3DSModelAttached *>(model3DS->attached());
        if (data) {
            updateNodeFromChangeFlags(model3DS, data->transform, data->frameChangeFlags);
            if (data->frameDirty & (Q3DSGraphObjectAttached::ModelDirty | Q3DSGraphObjectAttached::GlobalOpacityDirty)) {
                updateModel(model3DS);
                m_wasDirty = true;
                markLayerForObjectDirty(model3DS);
            }
        }
    }
        break;
    case Q3DSGraphObject::Camera:
    {
        Q3DSCameraNode *cam3DS = static_cast<Q3DSCameraNode *>(obj);
        Q3DSCameraAttached *data = static_cast<Q3DSCameraAttached *>(cam3DS->attached());
        if (data) {
            updateNodeFromChangeFlags(cam3DS, data->transform, data->frameChangeFlags);
            // no need for special EyeballChanges handling, updateNodeFromChangeFlags took care of that
            if (data->frameDirty & Q3DSGraphObjectAttached::CameraDirty) {
                setCameraProperties(cam3DS, data->frameChangeFlags); // handles both Node- and Camera-level properties
                setLayerCameraSizeProperties(data->layer3DS);
                // (orthographic) shadow maps, ssao texture, effects all rely on camera properties like clip range
                updateShadowMapStatus(data->layer3DS);
                updateSsaoStatus(data->layer3DS);
                Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(data->layer3DS->attached());
                if (!m_engine->isStereoscopic())
                    for (Q3DSEffectInstance *eff3DS : layerData->eyeMono->effectData.effects)
                        updateEffect(eff3DS);
#if 0
                // Note: Effects currently disabled for stereoscopic views
                if (m_engine->isStereoscopic()) {
                    for (Q3DSEffectInstance *eff3DS : layerData->eyeLeft->effectData.effects)
                        updateEffect(eff3DS);
                    for (Q3DSEffectInstance *eff3DS : layerData->eyeRight->effectData.effects)
                        updateEffect(eff3DS);
                }
#endif
                m_wasDirty = true;
                markLayerForObjectDirty(cam3DS);
            }
        }
    }
        break;
    case Q3DSGraphObject::Layer:
    {
        Q3DSLayerNode *layer3DS = static_cast<Q3DSLayerNode *>(obj);
        Q3DSLayerAttached *data = static_cast<Q3DSLayerAttached *>(layer3DS->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::LayerDirty)) {
            if (data->frameChangeFlags & Q3DSLayerNode::SourcePathChanges) {
                // This is quite limited now - we support changing the
                // sourcepath only when the sourcepath was non-empty to begin
                // with (i.e. a subpresentation layer can change its source
                // presentation but it cannot become an ordinary layer and vice versa).
                if (!layer3DS->sourcePath().isEmpty()) {
                    m_pendingSubPresLayers.insert(layer3DS);
                    updateSubPresentationHosts();
                }
            }
            updateSizesForLayer(layer3DS, data->parentSize);
            setLayerProperties(layer3DS);
            if (data->frameChangeFlags & Q3DSLayerNode::AoOrShadowChanges) {
                bool aoDidChange = false;
                updateSsaoStatus(layer3DS, &aoDidChange);
                if (aoDidChange) {
                    Q3DSUipPresentation::forAllModels(layer3DS->firstChild(),
                                                      [this](Q3DSModelNode *model3DS) { rebuildModelMaterial(model3DS); },
                    true); // include hidden ones too
                }
            }
            // regen light/shadow/materials when a light was added/removed under the layer
            if (data->frameChangeFlags & Q3DSLayerNode::LayerContentSubTreeLightsChange) {
                gatherLights(layer3DS);
                m_subTreesWithDirtyLights.insert(SubTreeWithDirtyLight(layer3DS, true));
            }
            // LayerContentSubTreeChanges needs no special handling here, just set the dirty like for everything else
            m_wasDirty = true;
            markLayerForObjectDirty(layer3DS);
        }
    }
        break;
    case Q3DSGraphObject::DefaultMaterial:
    {
        Q3DSDefaultMaterial *mat3DS = static_cast<Q3DSDefaultMaterial *>(obj);
        Q3DSDefaultMaterialAttached *data = static_cast<Q3DSDefaultMaterialAttached *>(mat3DS->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::DefaultMaterialDirty)) {
            for (auto it = data->perModelData.begin(), itEnd = data->perModelData.end(); it != itEnd; ++it) {
                Q3DSModelNode *model3DS = it.key();
                Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());
                it->combinedOpacity = clampOpacity(modelData->globalOpacity * (mat3DS->opacity() / 100.0f));
                updateDefaultMaterial(mat3DS, nullptr, model3DS);
                retagSubMeshes(model3DS);
            }
            m_wasDirty = true;
            markLayerForObjectDirty(mat3DS);
            if (data->frameChangeFlags & Q3DSDefaultMaterial::BlendModeChanges)
                m_pendingDefMatRebuild.insert(mat3DS);
        }
    }
        break;
    case Q3DSGraphObject::CustomMaterial:
    {
        Q3DSCustomMaterialInstance *mat3DS = static_cast<Q3DSCustomMaterialInstance *>(obj);
        Q3DSCustomMaterialAttached *data = static_cast<Q3DSCustomMaterialAttached *>(mat3DS->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::CustomMaterialDirty)) {
            const bool sourceChanges = data->frameChangeFlags & Q3DSCustomMaterialInstance::SourceChanges;
            if (sourceChanges) {
                data->classChanged = true;
                mat3DS->resolveReferences(*m_presentation); // make sure the new material is loaded
            }
            for (auto it = data->perModelData.begin(), itEnd = data->perModelData.end(); it != itEnd; ++it) {
                Q3DSModelNode *model3DS = it.key();
                Q3DSModelAttached *modelData = static_cast<Q3DSModelAttached *>(model3DS->attached());
                it->combinedOpacity = modelData->globalOpacity;
                if (sourceChanges)
                    rebuildModelMaterial(model3DS);
                else
                    updateCustomMaterial(mat3DS, nullptr, model3DS);
                retagSubMeshes(model3DS);
            }
            m_wasDirty = true;
            markLayerForObjectDirty(mat3DS);
        }
    }
        break;
    case Q3DSGraphObject::ReferencedMaterial:
    {
        Q3DSReferencedMaterial *mat3DS = static_cast<Q3DSReferencedMaterial *>(obj);
        Q3DSReferencedMaterialAttached *data = static_cast<Q3DSReferencedMaterialAttached *>(mat3DS->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::ReferencedMaterialDirty)) {
            const bool refChanges = data->frameChangeFlags & Q3DSReferencedMaterial::ReferenceChanges;
            if (refChanges) {
                mat3DS->resolveReferences(*m_presentation);
                if (mat3DS->parent() && mat3DS->parent()->type() == Q3DSGraphObject::Model) {
                    Q3DSModelNode *model3DS = static_cast<Q3DSModelNode *>(mat3DS->parent());
                    qCDebug(lcPerf, "Rebuilding submeshes for %s due to material reference change",
                            model3DS->id().constData());
                    rebuildModelSubMeshes(model3DS);
                    rebuildModelMaterial(model3DS);
                }
            }
            m_wasDirty = true;
            markLayerForObjectDirty(mat3DS);
        }
    }
        break;
    case Q3DSGraphObject::Effect:
    {
        Q3DSEffectInstance *eff3DS = static_cast<Q3DSEffectInstance *>(obj);
        Q3DSEffectAttached *data = static_cast<Q3DSEffectAttached *>(eff3DS->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::EffectDirty)) {
            const bool activeFlagChanges = data->frameChangeFlags & Q3DSEffectInstance::EyeBallChanges;
            const bool sourceChanges = data->frameChangeFlags & Q3DSEffectInstance::SourceChanges;
            if (sourceChanges)
                eff3DS->resolveReferences(*m_presentation); // make sure the new effect is loaded
            if (activeFlagChanges || sourceChanges) // active/deactivate effects by rebuilding the chain
                updateEffectStatus(data->layer3DS, sourceChanges);
            // send changed parameter values to the shader
            // TODO: Should we here handle & update effect for all eyes?
            updateEffect(eff3DS);
            m_wasDirty = true;
            markLayerForObjectDirty(eff3DS);
        }
    }
        break;
    case Q3DSGraphObject::Behavior:
    {
        Q3DSBehaviorInstance *behaviorInstance = static_cast<Q3DSBehaviorInstance *>(obj);
        Q3DSBehaviorAttached *data = static_cast<Q3DSBehaviorAttached *>(behaviorInstance->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::BehaviorDirty)) {
            const bool activeFlagChanges = data->frameChangeFlags & Q3DSBehaviorInstance::EyeBallChanges;
            if (activeFlagChanges) {
                if (behaviorInstance->eyeballEnabled())
                    m_engine->loadBehaviorInstance(behaviorInstance, m_presentation);
                else
                    m_engine->unloadBehaviorInstance(behaviorInstance);
            }
            // ignore layer dirty flags
        }
    }
        break;
    case Q3DSGraphObject::Image:
    {
        Q3DSImage *image3DS = static_cast<Q3DSImage *>(obj);
        Q3DSImageAttached *data = static_cast<Q3DSImageAttached *>(image3DS->attached());
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::ImageDirty)) {
            const bool sourceChanges = data->frameChangeFlags & Q3DSImage::SourceChanges;
            if (sourceChanges)
                image3DS->resolveReferences(*m_presentation); // make sure the new sourcepath gets processed
            image3DS->calculateTextureTransform();
            for (Q3DSDefaultMaterial *m : data->referencingDefaultMaterials) {
                Q3DSDefaultMaterialAttached *matData = m->attached<Q3DSDefaultMaterialAttached>();
                for (auto it = matData->perModelData.cbegin(), itEnd = matData->perModelData.cend(); it != itEnd; ++it)
                    updateDefaultMaterial(m, nullptr, it.key());
            }
            m_wasDirty = true;
            markLayerForObjectDirty(image3DS);
        }
    }
        break;
    case Q3DSGraphObject::Scene:
    {
        Q3DSScene *scene3DS = static_cast<Q3DSScene *>(obj);
        Q3DSSceneAttached *data = scene3DS->attached<Q3DSSceneAttached>();
        if (data && (data->frameDirty & Q3DSGraphObjectAttached::SceneDirty)) {
            Qt3DRender::QClearBuffers *clearBuffers
                    = static_cast<Qt3DRender::QClearBuffers *>(m_compositorClear);
            clearBuffers->setClearColor(m_scene->useClearColor()
                                        ? scene3DS->clearColor()
                                        : Qt::transparent);
        }
    }
        break;
    default:
        break;
    }

    Q3DSGraphObjectAttached *data = obj->attached();
    if (data) {
        data->frameDirty = 0;
        data->frameChangeFlags = 0;
    }

    obj = obj->firstChild();
    while (obj) {
        updateSubTreeRecursive(obj);
        obj = obj->nextSibling();
    }
}

void Q3DSSceneManager::updateNodeFromChangeFlags(Q3DSNode *node, Qt3DCore::QTransform *transform, int changeFlags)
{
    bool didUpdateGlobals = false;
    if ((changeFlags & Q3DSNode::TransformChanges)
            || (changeFlags & Q3DSNode::OpacityChanges))
    {
        setNodeProperties(node, nullptr, transform, NodePropUpdateGlobalsRecursively);
        didUpdateGlobals = true;
        m_wasDirty = true;
        markLayerForObjectDirty(node);
    }

    if (changeFlags & Q3DSNode::EyeballChanges) {
        if (node->type() == Q3DSGraphObject::Light) {
            Q3DSLightAttached *lightData = static_cast<Q3DSLightAttached *>(node->attached());
            Q3DSGraphObject *rootObject = lightData->layer3DS;
            // if this is a scoped light, use the scope node instead of layer
            Q3DSLightNode *lightNode = static_cast<Q3DSLightNode*>(node);
            if (lightNode->scope() && isLightScopeValid(lightNode->scope(), lightData->layer3DS))
                rootObject = lightNode->scope();
            gatherLights(lightData->layer3DS);
            m_subTreesWithDirtyLights.insert(SubTreeWithDirtyLight(rootObject, true));
            if (!didUpdateGlobals)
                updateGlobals(node, UpdateGlobalsRecursively | UpdateGlobalsSkipTransform);
        } else if (node->type() == Q3DSGraphObject::Camera) {
            // This is required before updateGlobals
            node->attached<Q3DSNodeAttached>()->visibilityTag
                    = node->flags().testFlag(Q3DSNode::Active) ?
                        Q3DSGraphObjectAttached::Visible : Q3DSGraphObjectAttached::Hidden;

            // also triggers rechoosing the layer's camera when calling back handleNodeGlobalChange
            updateGlobals(node, UpdateGlobalsRecursively | UpdateGlobalsSkipTransform);
        } else {
            // Drop whatever is queued since that was based on now-invalid
            // input. (important when entering slides, where eyball property
            // changes get processed after an initial visit of all objects)
            m_pendingObjectVisibility.remove(node);
            // This is an explicit eyeball change via the API or the console,
            // so update both visibilityTag and the QLayer tags based on
            // eyeball (and nothing else). The slide/animation system does not
            // use this path, that queues visibilityTag changes via
            // m_pendingObjectVisibility instead.
            setNodeVisibility(node, node->flags().testFlag(Q3DSNode::Active)); // will call updateGlobals() as well
        }
        m_wasDirty = true;
        markLayerForObjectDirty(node);
    }
}

void Q3DSSceneManager::setNodeVisibility(Q3DSNode *node, bool visible)
{
    Q3DSNodeAttached *data = static_cast<Q3DSNodeAttached *>(node->attached());
    Q_ASSERT(data);
    if (!data->entity)
        return;

    // Attempting to manage visibility by QLayer tags for nodes that are not
    // backed by a dedicated entity (3DS layers for instance) is an error and
    // cannot happen. The concept of QLayer tags is only suitable for "normal" nodes.
    Q_ASSERT_X(data->entity != m_rootEntity,"Q3DSSceneManager::setNodeVisibility",
               "Attempted to manage visibility of a node with non-dedicated entity by QLayer. This should not happen.");

    Q3DSLayerAttached *layerData = static_cast<Q3DSLayerAttached *>(data->layer3DS->attached());
    if (!layerData->eyeMono->opaqueTag || !layerData->eyeMono->transparentTag ||
        !layerData->eyeLeft->opaqueTag || !layerData->eyeLeft->transparentTag ||
        !layerData->eyeRight->opaqueTag || !layerData->eyeRight->transparentTag) {
        // bail out for subpresentation layers
        return;
    }

    if (!visible) {
        data->visibilityTag = Q3DSGraphObjectAttached::Hidden;
        data->entity->removeComponent(layerData->eyeMono->opaqueTag);
        data->entity->removeComponent(layerData->eyeMono->transparentTag);
        data->entity->removeComponent(layerData->eyeLeft->opaqueTag);
        data->entity->removeComponent(layerData->eyeLeft->transparentTag);
        data->entity->removeComponent(layerData->eyeRight->opaqueTag);
        data->entity->removeComponent(layerData->eyeRight->transparentTag);
    } else {
        data->visibilityTag = Q3DSGraphObjectAttached::Visible;
        if (node->type() != Q3DSGraphObject::Text) {
            data->entity->addComponent(layerData->eyeMono->opaqueTag);
            data->entity->addComponent(layerData->eyeLeft->opaqueTag);
            data->entity->addComponent(layerData->eyeRight->opaqueTag);
        }
        data->entity->addComponent(layerData->eyeMono->transparentTag);
        data->entity->addComponent(layerData->eyeLeft->transparentTag);
        data->entity->addComponent(layerData->eyeRight->transparentTag);
    }

    // For distance field text we need to update the subentities as well
    if (node->type() == Q3DSGraphObject::Text
            && node->attached<Q3DSTextAttached>()->distanceFieldText) {
        QList<Qt3DCore::QEntity *> subentities = data->entity->findChildren<Qt3DCore::QEntity *>();
        for (Qt3DCore::QEntity *subentity : subentities) {
            if (!visible) {
                subentity->removeComponent(layerData->eyeMono->transparentTag);
                subentity->removeComponent(layerData->eyeLeft->transparentTag);
                subentity->removeComponent(layerData->eyeRight->transparentTag);
            } else {
                subentity->addComponent(layerData->eyeMono->transparentTag);
                subentity->addComponent(layerData->eyeLeft->transparentTag);
                subentity->addComponent(layerData->eyeRight->transparentTag);
            }
        }
    }

    // For models the model root entity is tagged with both opaque and
    // transparent. The sub-mesh entities however should have the "real" tag
    // based on the material properties.
    if (node->type() == Q3DSGraphObject::Model) {
        Q3DSModelAttached *mdata = static_cast<Q3DSModelAttached *>(node->attached());
        for (Q3DSModelAttached::SubMesh &sm : mdata->subMeshes) {
            Qt3DRender::QLayer *tag = sm.hasTransparency ? layerData->eyeMono->transparentTag : layerData->eyeMono->opaqueTag;
            Qt3DRender::QLayer *tagLeft = sm.hasTransparency ? layerData->eyeLeft->transparentTag : layerData->eyeLeft->opaqueTag;
            Qt3DRender::QLayer *tagRight = sm.hasTransparency ? layerData->eyeRight->transparentTag : layerData->eyeRight->opaqueTag;
            if (!visible) {
                sm.entity->removeComponent(layerData->eyeMono->opaqueTag);
                sm.entity->removeComponent(layerData->eyeMono->transparentTag);
                sm.entity->removeComponent(layerData->eyeLeft->opaqueTag);
                sm.entity->removeComponent(layerData->eyeLeft->transparentTag);
                sm.entity->removeComponent(layerData->eyeRight->opaqueTag);
                sm.entity->removeComponent(layerData->eyeRight->transparentTag);
            } else {
                sm.entity->addComponent(tag);
                sm.entity->addComponent(tagLeft);
                sm.entity->addComponent(tagRight);
            }
        }
    }

    updateGlobals(node, UpdateGlobalsRecursively | UpdateGlobalsSkipTransform);
}

void Q3DSFrameUpdater::frameAction(float dt)
{
    if (m_firstFrameAction) {
        m_firstFrameAction = false;
        m_sceneManager->m_firstFrameActionTime = m_firstFrameActionTimer.elapsed();
        qCDebug(lcPerf, "Presentation %s: Time from the end of Qt3D scene building until first frame action: %lld ms",
                qPrintable(m_sceneManager->m_profiler->presentationName()), m_sceneManager->m_firstFrameActionTime);
        // Now it's time to push all timing data to the profiler.
        m_sceneManager->m_profiler->reportTimeAfterBuildUntilFirstFrameAction(m_sceneManager->m_firstFrameActionTime);
        if (!m_sceneManager->m_flags.testFlag(Q3DSSceneManager::SubPresentation)) {
            // total parse/build time is taken from the main presentation (since
            // the time includes all subpresentations too)
            m_sceneManager->m_profiler->reportTotalParseBuildTime(m_sceneManager->m_engine->totalLoadTimeMsecs());
        }

        // At this point do synchronized start of engine animations
        QTimer::singleShot(0, [this]() {
            m_sceneManager->engine()->startAnimations();
        });
    }
    m_sceneManager->m_profiler->reportBehaviorStats(m_sceneManager->m_engine->behaviorLoadTimeMsecs(),
                                                    m_sceneManager->m_engine->behaviorHandles().count());

    static const bool animDebug = qEnvironmentVariableIntValue("Q3DS_DEBUG") >= 3;
    if (Q_UNLIKELY(animDebug))
        qDebug().nospace() << "frame action " << m_frameCounter << ", delta=" << dt << ", applying animations and updating nodes";

    // 'dt' is somewhat dubious, use a QElapsedTimer of our own to be sure (in
    // practice the results are pretty much the same, i.e. the elapsed time on
    // the main thread)
    const float elapsed = m_frameActionTimer.restart();

    if (m_sceneManager->profiler()->isEnabled()) {
        // Record new frame event.
        const Q3DSRenderLoopStats rlStats = m_sceneManager->m_engine->renderLoopStats();
        m_sceneManager->profiler()->reportNewFrame(elapsed, &rlStats);
    }
    // Process input. In an ideal world this would be synchronous so that we
    // get results, process events from those, and then process property
    // changes from those events in one single frame action. Our world is not
    // ideal (but we can always pretend...).
    m_sceneManager->m_inputManager->runPicks();
    // Process queued object events.
    m_sceneManager->flushEventQueue();
    // Set and notify the value changes queued by animations.
    m_sceneManager->slidePlayer()->advanceFrame(elapsed);
    // Recursively check dirty flags and update inherited values, execute
    // pending visibility changes, update light cbuffers, etc.
    m_sceneManager->prepareNextFrame();
    // Update profiling statistics for this frame.
    m_sceneManager->profiler()->updateFrameStats(m_frameCounter);
    ++m_frameCounter;
}

void Q3DSSceneManager::setProfileUiVisible(bool visible, bool openLogAndConsole)
{
#if QT_CONFIG(q3ds_profileui)
    if (m_profileUi) {
        m_profileUi->setVisible(visible);
        if (visible && openLogAndConsole)
            m_profileUi->openLogAndConsole();
    }
#else
    Q_UNUSED(visible);
    Q_UNUSED(openLogAndConsole);
#endif
}

bool Q3DSSceneManager::isProfileUiVisible() const
{
#if QT_CONFIG(q3ds_profileui)
    return m_profileUi ? m_profileUi->visible() : false;
#else
    return false;
#endif
}

bool Q3DSSceneManager::isAnimatorsReady() const
{
    return m_animatorsInitialized;
}

void Q3DSSceneManager::setProfileUiInputEventSource(QObject *obj)
{
#if QT_CONFIG(q3ds_profileui)
    if (m_profileUi)
        m_profileUi->setInputEventSource(obj);
#else
    Q_UNUSED(obj);
#endif
}

void Q3DSSceneManager::configureProfileUi(float scale)
{
#if QT_CONFIG(q3ds_profileui)
    if (m_profileUi)
        m_profileUi->configure(scale);
#else
    Q_UNUSED(scale);
#endif
}

void Q3DSSceneManager::setMatteEnabled(bool isEnabled)
{
    if (!m_viewportData.drawMatteNode)
        return;

    // TODO: The dragon renderer does not take the enabled state into account, so add or remove
    // the test instead.
    if (isEnabled) {
        // Attached the matteClearBuffers to the drawMatteNode placeholder
        m_viewportData.matteClearBuffers->setParent(m_viewportData.drawMatteNode);
        m_viewportData.matteRenderState->setEnabled(true);
        m_viewportData.matteScissorTest->setEnabled(true);
        m_viewportData.matteRenderState->addRenderState(m_viewportData.matteScissorTest);
    } else {
        m_viewportData.matteClearBuffers->setParent(m_viewportData.dummyMatteRoot);
        m_viewportData.matteRenderState->setEnabled(false);
        m_viewportData.matteScissorTest->setEnabled(false);
        m_viewportData.matteRenderState->removeRenderState(m_viewportData.matteScissorTest);
    }
}

void Q3DSSceneManager::setMatteColor(const QColor &color)
{
    if (m_viewportData.matteClearBuffers)
        m_viewportData.matteClearBuffers->setClearColor(color);
}

void Q3DSSceneManager::addLog(const QString &msg)
{
#if QT_CONFIG(q3ds_profileui)
    QMutexLocker locker(&m_logMutex);
    if (m_inDestructor)
        return;
    // the log is maintained by the main presentation's profiler; route to that
    // even if this is a subpresentation
    m_profiler->mainPresentationProfiler()->addLog(msg);
#else
    Q_UNUSED(msg);
#endif
}

void Q3DSSceneManager::addLog(const char *fmt, ...)
{
#if QT_CONFIG(q3ds_profileui)
    va_list ap;
    va_start(ap, fmt);
    const QString msg = QString::vasprintf(fmt, ap);
    va_end(ap);
    addLog(msg);
#else
    Q_UNUSED(fmt);
#endif
}

void Q3DSSceneManager::changeSlideByName(Q3DSGraphObject *sceneOrComponent, const QString &name)
{
    if (!sceneOrComponent)
        return;

    if (sceneOrComponent->type() != Q3DSGraphObject::Scene && sceneOrComponent->type() != Q3DSGraphObject::Component) {
        qWarning("changeSlideByName: Object %s is not Scene or Component", sceneOrComponent->id().constData());
        return;
    }

    Q3DSComponentNode *component = sceneOrComponent->type() == Q3DSGraphObject::Component
            ? static_cast<Q3DSComponentNode *>(sceneOrComponent) : nullptr;
    Q3DSSlide *root = component ? component->masterSlide() : m_masterSlide;
    if (!root)
        return;

    Q3DSSlide *targetSlide = nullptr;
    Q3DSUipPresentation::forAllObjectsOfType(root, Q3DSGraphObject::Slide,
                                             [name, &targetSlide](Q3DSGraphObject *obj) {
        Q3DSSlide *slide = static_cast<Q3DSSlide *>(obj);
        if (slide->name() == name)
            targetSlide = slide;
    });

    if (targetSlide) {
        if (component)
            setComponentCurrentSlide(targetSlide);
        else
            setCurrentSlide(targetSlide);
    } else {
        qWarning("changeSlideByName: Slide %s not found on %s", qPrintable(name), sceneOrComponent->id().constData());
    }
}

void Q3DSSceneManager::changeSlideByIndex(Q3DSGraphObject *sceneOrComponent, int index)
{
    Q3DSAbstractSlidePlayer *slidePlayer = m_slidePlayer;
    if (sceneOrComponent->type() == Q3DSGraphObject::Component) {
        slidePlayer = static_cast<Q3DSComponentNode *>(sceneOrComponent)->masterSlide()
                ->attached<Q3DSSlideAttached>()->slidePlayer;
    }

    slidePlayer->slideDeck()->setCurrentSlide(index);
}

void Q3DSSceneManager::changeSlideByDirection(Q3DSGraphObject *sceneOrComponent, bool next, bool wrap)
{
    Q3DSAbstractSlidePlayer *slidePlayer = m_slidePlayer;
    if (sceneOrComponent->type() == Q3DSGraphObject::Component) {
        slidePlayer = static_cast<Q3DSComponentNode *>(sceneOrComponent)->masterSlide()
                ->attached<Q3DSSlideAttached>()->slidePlayer;
    }

    if (next)
        slidePlayer->slideDeck()->goToNextSlide(wrap);
    else
        slidePlayer->slideDeck()->gotToPreviousSlide(wrap);

    slidePlayer->reload();
}

Q3DSSlide *Q3DSSceneManager::currentSlideForSceneOrComponent(Q3DSGraphObject *sceneOrComponent) const
{
    Q3DSSlide *slide = currentSlide();
    if (sceneOrComponent->type() == Q3DSGraphObject::Component)
        slide = static_cast<Q3DSComponentNode *>(sceneOrComponent)->currentSlide();

    return slide;
}

void Q3DSSceneManager::goToTime(Q3DSGraphObject *sceneOrComponent, float milliseconds)


context:
space:
mode: