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diff --git a/src/3rdparty/angle/src/libANGLE/renderer/d3d/loadimage_etc.cpp b/src/3rdparty/angle/src/libANGLE/renderer/d3d/loadimage_etc.cpp
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+//
+// Copyright (c) 2013-2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// loadimage_etc.cpp: Decodes ETC and EAC encoded textures.
+
+#include "libANGLE/renderer/d3d/loadimage_etc.h"
+
+#include "libANGLE/renderer/d3d/loadimage.h"
+#include "libANGLE/renderer/d3d/imageformats.h"
+
+namespace rx
+{
+namespace
+{
+// Table 3.17.2 sorted according to table 3.17.3
+// clang-format off
+static const int intensityModifierDefault[][4] =
+{
+ { 2, 8, -2, -8 },
+ { 5, 17, -5, -17 },
+ { 9, 29, -9, -29 },
+ { 13, 42, -13, -42 },
+ { 18, 60, -18, -60 },
+ { 24, 80, -24, -80 },
+ { 33, 106, -33, -106 },
+ { 47, 183, -47, -183 },
+};
+// clang-format on
+
+// Table C.12, intensity modifier for non opaque punchthrough alpha
+// clang-format off
+static const int intensityModifierNonOpaque[][4] =
+{
+ { 0, 8, 0, -8 },
+ { 0, 17, 0, -17 },
+ { 0, 29, 0, -29 },
+ { 0, 42, 0, -42 },
+ { 0, 60, 0, -60 },
+ { 0, 80, 0, -80 },
+ { 0, 106, 0, -106 },
+ { 0, 183, 0, -183 },
+};
+// clang-format on
+
+// Table C.7, mapping from pixel index values to modifier value orders
+// clang-format off
+static const int valueMappingTable[] =
+{
+ 2, 3, 1, 0
+};
+// clang-format on
+
+struct ETC2Block
+{
+ // Decodes unsigned single or dual channel block to bytes
+ void decodeAsSingleChannel(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destPixelStride,
+ size_t destRowPitch,
+ bool isSigned) const
+ {
+ for (size_t j = 0; j < 4 && (y + j) < h; j++)
+ {
+ uint8_t *row = dest + (j * destRowPitch);
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ uint8_t *pixel = row + (i * destPixelStride);
+ if (isSigned)
+ {
+ *pixel = clampSByte(getSingleChannel(i, j, isSigned));
+ }
+ else
+ {
+ *pixel = clampByte(getSingleChannel(i, j, isSigned));
+ }
+ }
+ }
+ }
+
+ // Decodes RGB block to rgba8
+ void decodeAsRGB(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch,
+ const uint8_t alphaValues[4][4],
+ bool punchThroughAlpha) const
+ {
+ bool opaqueBit = u.idht.mode.idm.diffbit;
+ bool nonOpaquePunchThroughAlpha = punchThroughAlpha && !opaqueBit;
+ // Select mode
+ if (u.idht.mode.idm.diffbit || punchThroughAlpha)
+ {
+ const auto &block = u.idht.mode.idm.colors.diff;
+ int r = (block.R + block.dR);
+ int g = (block.G + block.dG);
+ int b = (block.B + block.dB);
+ if (r < 0 || r > 31)
+ {
+ decodeTBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+ nonOpaquePunchThroughAlpha);
+ }
+ else if (g < 0 || g > 31)
+ {
+ decodeHBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+ nonOpaquePunchThroughAlpha);
+ }
+ else if (b < 0 || b > 31)
+ {
+ decodePlanarBlock(dest, x, y, w, h, destRowPitch, alphaValues);
+ }
+ else
+ {
+ decodeDifferentialBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+ nonOpaquePunchThroughAlpha);
+ }
+ }
+ else
+ {
+ decodeIndividualBlock(dest, x, y, w, h, destRowPitch, alphaValues,
+ nonOpaquePunchThroughAlpha);
+ }
+ }
+
+ // Transcodes RGB block to BC1
+ void transcodeAsBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4],
+ bool punchThroughAlpha) const
+ {
+ bool opaqueBit = u.idht.mode.idm.diffbit;
+ bool nonOpaquePunchThroughAlpha = punchThroughAlpha && !opaqueBit;
+ // Select mode
+ if (u.idht.mode.idm.diffbit || punchThroughAlpha)
+ {
+ const auto &block = u.idht.mode.idm.colors.diff;
+ int r = (block.R + block.dR);
+ int g = (block.G + block.dG);
+ int b = (block.B + block.dB);
+ if (r < 0 || r > 31)
+ {
+ transcodeTBlockToBC1(dest, x, y, w, h, alphaValues, nonOpaquePunchThroughAlpha);
+ }
+ else if (g < 0 || g > 31)
+ {
+ transcodeHBlockToBC1(dest, x, y, w, h, alphaValues, nonOpaquePunchThroughAlpha);
+ }
+ else if (b < 0 || b > 31)
+ {
+ transcodePlanarBlockToBC1(dest, x, y, w, h, alphaValues);
+ }
+ else
+ {
+ transcodeDifferentialBlockToBC1(dest, x, y, w, h, alphaValues,
+ nonOpaquePunchThroughAlpha);
+ }
+ }
+ else
+ {
+ transcodeIndividualBlockToBC1(dest, x, y, w, h, alphaValues,
+ nonOpaquePunchThroughAlpha);
+ }
+ }
+
+ private:
+ union
+ {
+ // Individual, differential, H and T modes
+ struct
+ {
+ union
+ {
+ // Individual and differential modes
+ struct
+ {
+ union
+ {
+ struct // Individual colors
+ {
+ unsigned char R2 : 4;
+ unsigned char R1 : 4;
+ unsigned char G2 : 4;
+ unsigned char G1 : 4;
+ unsigned char B2 : 4;
+ unsigned char B1 : 4;
+ } indiv;
+ struct // Differential colors
+ {
+ signed char dR : 3;
+ unsigned char R : 5;
+ signed char dG : 3;
+ unsigned char G : 5;
+ signed char dB : 3;
+ unsigned char B : 5;
+ } diff;
+ } colors;
+ bool flipbit : 1;
+ bool diffbit : 1;
+ unsigned char cw2 : 3;
+ unsigned char cw1 : 3;
+ } idm;
+ // T mode
+ struct
+ {
+ // Byte 1
+ unsigned char TR1b : 2;
+ unsigned char TdummyB : 1;
+ unsigned char TR1a : 2;
+ unsigned char TdummyA : 3;
+ // Byte 2
+ unsigned char TB1 : 4;
+ unsigned char TG1 : 4;
+ // Byte 3
+ unsigned char TG2 : 4;
+ unsigned char TR2 : 4;
+ // Byte 4
+ unsigned char Tdb : 1;
+ bool Tflipbit : 1;
+ unsigned char Tda : 2;
+ unsigned char TB2 : 4;
+ } tm;
+ // H mode
+ struct
+ {
+ // Byte 1
+ unsigned char HG1a : 3;
+ unsigned char HR1 : 4;
+ unsigned char HdummyA : 1;
+ // Byte 2
+ unsigned char HB1b : 2;
+ unsigned char HdummyC : 1;
+ unsigned char HB1a : 1;
+ unsigned char HG1b : 1;
+ unsigned char HdummyB : 3;
+ // Byte 3
+ unsigned char HG2a : 3;
+ unsigned char HR2 : 4;
+ unsigned char HB1c : 1;
+ // Byte 4
+ unsigned char Hdb : 1;
+ bool Hflipbit : 1;
+ unsigned char Hda : 1;
+ unsigned char HB2 : 4;
+ unsigned char HG2b : 1;
+ } hm;
+ } mode;
+ unsigned char pixelIndexMSB[2];
+ unsigned char pixelIndexLSB[2];
+ } idht;
+ // planar mode
+ struct
+ {
+ // Byte 1
+ unsigned char GO1 : 1;
+ unsigned char RO : 6;
+ unsigned char PdummyA : 1;
+ // Byte 2
+ unsigned char BO1 : 1;
+ unsigned char GO2 : 6;
+ unsigned char PdummyB : 1;
+ // Byte 3
+ unsigned char BO3a : 2;
+ unsigned char PdummyD : 1;
+ unsigned char BO2 : 2;
+ unsigned char PdummyC : 3;
+ // Byte 4
+ unsigned char RH2 : 1;
+ bool Pflipbit : 1;
+ unsigned char RH1 : 5;
+ unsigned char BO3b : 1;
+ // Byte 5
+ unsigned char BHa : 1;
+ unsigned char GH : 7;
+ // Byte 6
+ unsigned char RVa : 3;
+ unsigned char BHb : 5;
+ // Byte 7
+ unsigned char GVa : 5;
+ unsigned char RVb : 3;
+ // Byte 8
+ unsigned char BV : 6;
+ unsigned char GVb : 2;
+ } pblk;
+ // Single channel block
+ struct
+ {
+ union
+ {
+ unsigned char us;
+ signed char s;
+ } base_codeword;
+ unsigned char table_index : 4;
+ unsigned char multiplier : 4;
+ unsigned char mc1 : 2;
+ unsigned char mb : 3;
+ unsigned char ma : 3;
+ unsigned char mf1 : 1;
+ unsigned char me : 3;
+ unsigned char md : 3;
+ unsigned char mc2 : 1;
+ unsigned char mh : 3;
+ unsigned char mg : 3;
+ unsigned char mf2 : 2;
+ unsigned char mk1 : 2;
+ unsigned char mj : 3;
+ unsigned char mi : 3;
+ unsigned char mn1 : 1;
+ unsigned char mm : 3;
+ unsigned char ml : 3;
+ unsigned char mk2 : 1;
+ unsigned char mp : 3;
+ unsigned char mo : 3;
+ unsigned char mn2 : 2;
+ } scblk;
+ } u;
+
+ static unsigned char clampByte(int value)
+ {
+ return static_cast<unsigned char>(gl::clamp(value, 0, 255));
+ }
+
+ static signed char clampSByte(int value)
+ {
+ return static_cast<signed char>(gl::clamp(value, -128, 127));
+ }
+
+ static R8G8B8A8 createRGBA(int red, int green, int blue, int alpha)
+ {
+ R8G8B8A8 rgba;
+ rgba.R = clampByte(red);
+ rgba.G = clampByte(green);
+ rgba.B = clampByte(blue);
+ rgba.A = clampByte(alpha);
+ return rgba;
+ }
+
+ static R8G8B8A8 createRGBA(int red, int green, int blue)
+ {
+ return createRGBA(red, green, blue, 255);
+ }
+
+ static int extend_4to8bits(int x) { return (x << 4) | x; }
+ static int extend_5to8bits(int x) { return (x << 3) | (x >> 2); }
+ static int extend_6to8bits(int x) { return (x << 2) | (x >> 4); }
+ static int extend_7to8bits(int x) { return (x << 1) | (x >> 6); }
+
+ void decodeIndividualBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ const auto &block = u.idht.mode.idm.colors.indiv;
+ int r1 = extend_4to8bits(block.R1);
+ int g1 = extend_4to8bits(block.G1);
+ int b1 = extend_4to8bits(block.B1);
+ int r2 = extend_4to8bits(block.R2);
+ int g2 = extend_4to8bits(block.G2);
+ int b2 = extend_4to8bits(block.B2);
+ decodeIndividualOrDifferentialBlock(dest, x, y, w, h, destRowPitch, r1, g1, b1, r2, g2, b2,
+ alphaValues, nonOpaquePunchThroughAlpha);
+ }
+
+ void decodeDifferentialBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ const auto &block = u.idht.mode.idm.colors.diff;
+ int b1 = extend_5to8bits(block.B);
+ int g1 = extend_5to8bits(block.G);
+ int r1 = extend_5to8bits(block.R);
+ int r2 = extend_5to8bits(block.R + block.dR);
+ int g2 = extend_5to8bits(block.G + block.dG);
+ int b2 = extend_5to8bits(block.B + block.dB);
+ decodeIndividualOrDifferentialBlock(dest, x, y, w, h, destRowPitch, r1, g1, b1, r2, g2, b2,
+ alphaValues, nonOpaquePunchThroughAlpha);
+ }
+
+ void decodeIndividualOrDifferentialBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch,
+ int r1,
+ int g1,
+ int b1,
+ int r2,
+ int g2,
+ int b2,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ const auto intensityModifier =
+ nonOpaquePunchThroughAlpha ? intensityModifierNonOpaque : intensityModifierDefault;
+
+ R8G8B8A8 subblockColors0[4];
+ R8G8B8A8 subblockColors1[4];
+ for (size_t modifierIdx = 0; modifierIdx < 4; modifierIdx++)
+ {
+ const int i1 = intensityModifier[u.idht.mode.idm.cw1][modifierIdx];
+ subblockColors0[modifierIdx] = createRGBA(r1 + i1, g1 + i1, b1 + i1);
+
+ const int i2 = intensityModifier[u.idht.mode.idm.cw2][modifierIdx];
+ subblockColors1[modifierIdx] = createRGBA(r2 + i2, g2 + i2, b2 + i2);
+ }
+
+ if (u.idht.mode.idm.flipbit)
+ {
+ uint8_t *curPixel = dest;
+ for (size_t j = 0; j < 2 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ row[i] = subblockColors0[getIndex(i, j)];
+ row[i].A = alphaValues[j][i];
+ }
+ curPixel += destRowPitch;
+ }
+ for (size_t j = 2; j < 4 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ row[i] = subblockColors1[getIndex(i, j)];
+ row[i].A = alphaValues[j][i];
+ }
+ curPixel += destRowPitch;
+ }
+ }
+ else
+ {
+ uint8_t *curPixel = dest;
+ for (size_t j = 0; j < 4 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+ for (size_t i = 0; i < 2 && (x + i) < w; i++)
+ {
+ row[i] = subblockColors0[getIndex(i, j)];
+ row[i].A = alphaValues[j][i];
+ }
+ for (size_t i = 2; i < 4 && (x + i) < w; i++)
+ {
+ row[i] = subblockColors1[getIndex(i, j)];
+ row[i].A = alphaValues[j][i];
+ }
+ curPixel += destRowPitch;
+ }
+ }
+ if (nonOpaquePunchThroughAlpha)
+ {
+ decodePunchThroughAlphaBlock(dest, x, y, w, h, destRowPitch);
+ }
+ }
+
+ void decodeTBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ // Table C.8, distance index for T and H modes
+ const auto &block = u.idht.mode.tm;
+
+ int r1 = extend_4to8bits(block.TR1a << 2 | block.TR1b);
+ int g1 = extend_4to8bits(block.TG1);
+ int b1 = extend_4to8bits(block.TB1);
+ int r2 = extend_4to8bits(block.TR2);
+ int g2 = extend_4to8bits(block.TG2);
+ int b2 = extend_4to8bits(block.TB2);
+
+ static int distance[8] = {3, 6, 11, 16, 23, 32, 41, 64};
+ const int d = distance[block.Tda << 1 | block.Tdb];
+
+ const R8G8B8A8 paintColors[4] = {
+ createRGBA(r1, g1, b1), createRGBA(r2 + d, g2 + d, b2 + d), createRGBA(r2, g2, b2),
+ createRGBA(r2 - d, g2 - d, b2 - d),
+ };
+
+ uint8_t *curPixel = dest;
+ for (size_t j = 0; j < 4 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ row[i] = paintColors[getIndex(i, j)];
+ row[i].A = alphaValues[j][i];
+ }
+ curPixel += destRowPitch;
+ }
+
+ if (nonOpaquePunchThroughAlpha)
+ {
+ decodePunchThroughAlphaBlock(dest, x, y, w, h, destRowPitch);
+ }
+ }
+
+ void decodeHBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ // Table C.8, distance index for T and H modes
+ const auto &block = u.idht.mode.hm;
+
+ int r1 = extend_4to8bits(block.HR1);
+ int g1 = extend_4to8bits(block.HG1a << 1 | block.HG1b);
+ int b1 = extend_4to8bits(block.HB1a << 3 | block.HB1b << 1 | block.HB1c);
+ int r2 = extend_4to8bits(block.HR2);
+ int g2 = extend_4to8bits(block.HG2a << 1 | block.HG2b);
+ int b2 = extend_4to8bits(block.HB2);
+
+ static const int distance[8] = {3, 6, 11, 16, 23, 32, 41, 64};
+ const int d = distance[(block.Hda << 2) | (block.Hdb << 1) |
+ ((r1 << 16 | g1 << 8 | b1) >= (r2 << 16 | g2 << 8 | b2) ? 1 : 0)];
+
+ const R8G8B8A8 paintColors[4] = {
+ createRGBA(r1 + d, g1 + d, b1 + d), createRGBA(r1 - d, g1 - d, b1 - d),
+ createRGBA(r2 + d, g2 + d, b2 + d), createRGBA(r2 - d, g2 - d, b2 - d),
+ };
+
+ uint8_t *curPixel = dest;
+ for (size_t j = 0; j < 4 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ row[i] = paintColors[getIndex(i, j)];
+ row[i].A = alphaValues[j][i];
+ }
+ curPixel += destRowPitch;
+ }
+
+ if (nonOpaquePunchThroughAlpha)
+ {
+ decodePunchThroughAlphaBlock(dest, x, y, w, h, destRowPitch);
+ }
+ }
+
+ void decodePlanarBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t pitch,
+ const uint8_t alphaValues[4][4]) const
+ {
+ int ro = extend_6to8bits(u.pblk.RO);
+ int go = extend_7to8bits(u.pblk.GO1 << 6 | u.pblk.GO2);
+ int bo =
+ extend_6to8bits(u.pblk.BO1 << 5 | u.pblk.BO2 << 3 | u.pblk.BO3a << 1 | u.pblk.BO3b);
+ int rh = extend_6to8bits(u.pblk.RH1 << 1 | u.pblk.RH2);
+ int gh = extend_7to8bits(u.pblk.GH);
+ int bh = extend_6to8bits(u.pblk.BHa << 5 | u.pblk.BHb);
+ int rv = extend_6to8bits(u.pblk.RVa << 3 | u.pblk.RVb);
+ int gv = extend_7to8bits(u.pblk.GVa << 2 | u.pblk.GVb);
+ int bv = extend_6to8bits(u.pblk.BV);
+
+ uint8_t *curPixel = dest;
+ for (size_t j = 0; j < 4 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+
+ int ry = static_cast<int>(j) * (rv - ro) + 2;
+ int gy = static_cast<int>(j) * (gv - go) + 2;
+ int by = static_cast<int>(j) * (bv - bo) + 2;
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ row[i] = createRGBA(((static_cast<int>(i) * (rh - ro) + ry) >> 2) + ro,
+ ((static_cast<int>(i) * (gh - go) + gy) >> 2) + go,
+ ((static_cast<int>(i) * (bh - bo) + by) >> 2) + bo,
+ alphaValues[j][i]);
+ }
+ curPixel += pitch;
+ }
+ }
+
+ // Index for individual, differential, H and T modes
+ size_t getIndex(size_t x, size_t y) const
+ {
+ size_t bitIndex = x * 4 + y;
+ size_t bitOffset = bitIndex & 7;
+ size_t lsb = (u.idht.pixelIndexLSB[1 - (bitIndex >> 3)] >> bitOffset) & 1;
+ size_t msb = (u.idht.pixelIndexMSB[1 - (bitIndex >> 3)] >> bitOffset) & 1;
+ return (msb << 1) | lsb;
+ }
+
+ void decodePunchThroughAlphaBlock(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ size_t destRowPitch) const
+ {
+ uint8_t *curPixel = dest;
+ for (size_t j = 0; j < 4 && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = reinterpret_cast<R8G8B8A8 *>(curPixel);
+ for (size_t i = 0; i < 4 && (x + i) < w; i++)
+ {
+ if (getIndex(i, j) == 2) // msb == 1 && lsb == 0
+ {
+ row[i] = createRGBA(0, 0, 0, 0);
+ }
+ }
+ curPixel += destRowPitch;
+ }
+ }
+
+ uint16_t RGB8ToRGB565(const R8G8B8A8 &rgba) const
+ {
+ return (static_cast<uint16_t>(rgba.R >> 3) << 11) |
+ (static_cast<uint16_t>(rgba.G >> 2) << 5) |
+ (static_cast<uint16_t>(rgba.B >> 3) << 0);
+ }
+
+ uint32_t matchBC1Bits(const R8G8B8A8 *rgba,
+ const R8G8B8A8 &minColor,
+ const R8G8B8A8 &maxColor,
+ bool opaque) const
+ {
+ // Project each pixel on the (maxColor, minColor) line to decide which
+ // BC1 code to assign to it.
+
+ uint8_t decodedColors[2][3] = {{maxColor.R, maxColor.G, maxColor.B},
+ {minColor.R, minColor.G, minColor.B}};
+
+ int direction[3];
+ for (int ch = 0; ch < 3; ch++)
+ {
+ direction[ch] = decodedColors[0][ch] - decodedColors[1][ch];
+ }
+
+ int stops[2];
+ for (int i = 0; i < 2; i++)
+ {
+ stops[i] = decodedColors[i][0] * direction[0] + decodedColors[i][1] * direction[1] +
+ decodedColors[i][2] * direction[2];
+ }
+
+ uint32_t bits = 0;
+ if (opaque)
+ {
+ for (int i = 15; i >= 0; i--)
+ {
+ // In opaque mode, the code is from 0 to 3.
+
+ bits <<= 2;
+ const int dot =
+ rgba[i].R * direction[0] + rgba[i].G * direction[1] + rgba[i].B * direction[2];
+ const int factor = gl::clamp(
+ static_cast<int>(
+ (static_cast<float>(dot - stops[1]) / (stops[0] - stops[1])) * 3 + 0.5f),
+ 0, 3);
+ switch (factor)
+ {
+ case 0:
+ bits |= 1;
+ break;
+ case 1:
+ bits |= 3;
+ break;
+ case 2:
+ bits |= 2;
+ break;
+ case 3:
+ default:
+ bits |= 0;
+ break;
+ }
+ }
+ }
+ else
+ {
+ for (int i = 15; i >= 0; i--)
+ {
+ // In non-opaque mode, 3 is for tranparent pixels.
+
+ bits <<= 2;
+ if (0 == rgba[i].A)
+ {
+ bits |= 3;
+ }
+ else
+ {
+ const int dot = rgba[i].R * direction[0] + rgba[i].G * direction[1] +
+ rgba[i].B * direction[2];
+ const int factor = gl::clamp(
+ static_cast<int>(
+ (static_cast<float>(dot - stops[1]) / (stops[0] - stops[1])) * 2 +
+ 0.5f),
+ 0, 2);
+ switch (factor)
+ {
+ case 0:
+ bits |= 0;
+ break;
+ case 1:
+ bits |= 2;
+ break;
+ case 2:
+ default:
+ bits |= 1;
+ break;
+ }
+ }
+ }
+ }
+
+ return bits;
+ }
+
+ void packBC1(void *bc1,
+ const R8G8B8A8 *rgba,
+ R8G8B8A8 &minColor,
+ R8G8B8A8 &maxColor,
+ bool opaque) const
+ {
+ uint32_t bits;
+ uint16_t max16 = RGB8ToRGB565(maxColor);
+ uint16_t min16 = RGB8ToRGB565(minColor);
+ if (max16 != min16)
+ {
+ // Find the best BC1 code for each pixel
+ bits = matchBC1Bits(rgba, minColor, maxColor, opaque);
+ }
+ else
+ {
+ // Same colors, BC1 index 0 is the color in both opaque and transparent mode
+ bits = 0;
+ // BC1 index 3 is transparent
+ if (!opaque)
+ {
+ for (int i = 0; i < 16; i++)
+ {
+ if (0 == rgba[i].A)
+ {
+ bits |= (3 << (i * 2));
+ }
+ }
+ }
+ }
+
+ if (max16 < min16)
+ {
+ std::swap(max16, min16);
+
+ uint32_t xorMask = 0;
+ if (opaque)
+ {
+ // In opaque mode switching the two colors is doing the
+ // following code swaps: 0 <-> 1 and 2 <-> 3. This is
+ // equivalent to flipping the first bit of each code
+ // (5 = 0b0101)
+ xorMask = 0x55555555;
+ }
+ else
+ {
+ // In transparent mode switching the colors is doing the
+ // following code swap: 0 <-> 1. 0xA selects the second bit of
+ // each code, bits >> 1 selects the first bit of the code when
+ // the seconds bit is set (case 2 and 3). We invert all the
+ // non-selected bits, that is the first bit when the code is
+ // 0 or 1.
+ xorMask = ~((bits >> 1) | 0xAAAAAAAA);
+ }
+ bits ^= xorMask;
+ }
+
+ struct BC1Block
+ {
+ uint16_t color0;
+ uint16_t color1;
+ uint32_t bits;
+ };
+
+ // Encode the opaqueness in the order of the two BC1 colors
+ BC1Block *dest = reinterpret_cast<BC1Block *>(bc1);
+ if (opaque)
+ {
+ dest->color0 = max16;
+ dest->color1 = min16;
+ }
+ else
+ {
+ dest->color0 = min16;
+ dest->color1 = max16;
+ }
+ dest->bits = bits;
+ }
+
+ void transcodeIndividualBlockToBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ const auto &block = u.idht.mode.idm.colors.indiv;
+ int r1 = extend_4to8bits(block.R1);
+ int g1 = extend_4to8bits(block.G1);
+ int b1 = extend_4to8bits(block.B1);
+ int r2 = extend_4to8bits(block.R2);
+ int g2 = extend_4to8bits(block.G2);
+ int b2 = extend_4to8bits(block.B2);
+ transcodeIndividualOrDifferentialBlockToBC1(dest, x, y, w, h, r1, g1, b1, r2, g2, b2,
+ alphaValues, nonOpaquePunchThroughAlpha);
+ }
+
+ void transcodeDifferentialBlockToBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ const auto &block = u.idht.mode.idm.colors.diff;
+ int b1 = extend_5to8bits(block.B);
+ int g1 = extend_5to8bits(block.G);
+ int r1 = extend_5to8bits(block.R);
+ int r2 = extend_5to8bits(block.R + block.dR);
+ int g2 = extend_5to8bits(block.G + block.dG);
+ int b2 = extend_5to8bits(block.B + block.dB);
+ transcodeIndividualOrDifferentialBlockToBC1(dest, x, y, w, h, r1, g1, b1, r2, g2, b2,
+ alphaValues, nonOpaquePunchThroughAlpha);
+ }
+
+ void decodeSubblock(R8G8B8A8 *rgbaBlock,
+ size_t pixelRange[2][2],
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4],
+ bool flipbit,
+ size_t subblockIdx,
+ const R8G8B8A8 subblockColors[2][4]) const
+ {
+ size_t dxBegin = 0;
+ size_t dxEnd = 4;
+ size_t dyBegin = subblockIdx * 2;
+ size_t dyEnd = dyBegin + 2;
+ if (!flipbit)
+ {
+ std::swap(dxBegin, dyBegin);
+ std::swap(dxEnd, dyEnd);
+ }
+
+ for (size_t j = dyBegin; j < dyEnd && (y + j) < h; j++)
+ {
+ R8G8B8A8 *row = &rgbaBlock[j * 4];
+ for (size_t i = dxBegin; i < dxEnd && (x + i) < w; i++)
+ {
+ const size_t pixelIndex = getIndex(i, j);
+ if (valueMappingTable[pixelIndex] < valueMappingTable[pixelRange[subblockIdx][0]])
+ {
+ pixelRange[subblockIdx][0] = pixelIndex;
+ }
+ if (valueMappingTable[pixelIndex] > valueMappingTable[pixelRange[subblockIdx][1]])
+ {
+ pixelRange[subblockIdx][1] = pixelIndex;
+ }
+
+ row[i] = subblockColors[subblockIdx][pixelIndex];
+ row[i].A = alphaValues[j][i];
+ }
+ }
+ }
+
+ void transcodeIndividualOrDifferentialBlockToBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ int r1,
+ int g1,
+ int b1,
+ int r2,
+ int g2,
+ int b2,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ // A BC1 block has 2 endpoints, pixels is encoded as linear
+ // interpolations of them. A ETC1/ETC2 individual or differential block
+ // has 2 subblocks. Each subblock has one color and a modifier. We
+ // compute the max intensity and min intensity pixel values to use as
+ // our two BC1 endpoints and then map pixels to BC1 by projecting on the
+ // line between the two endpoints and choosing the right fraction.
+ //
+ // In the future, we have 2 potential improvements to this algorithm.
+ // 1. We don't actually need to decode ETC blocks to RGBs. Instead,
+ // the subblock colors and pixel indices alreay contains enough
+ // information for transcode. A direct mapping would be more
+ // efficient here.
+ // 2. Currently the BC1 endpoints come from the max and min intensity
+ // of ETC colors. A principal component analysis (PCA) on them might
+ // give us better quality results, with limited costs
+
+ const auto intensityModifier =
+ nonOpaquePunchThroughAlpha ? intensityModifierNonOpaque : intensityModifierDefault;
+
+ // Compute the colors that pixels can have in each subblock both for
+ // the decoding of the RGBA data and BC1 encoding
+ R8G8B8A8 subblockColors[2][4];
+ for (size_t modifierIdx = 0; modifierIdx < 4; modifierIdx++)
+ {
+ const int i1 = intensityModifier[u.idht.mode.idm.cw1][modifierIdx];
+ subblockColors[0][modifierIdx] = createRGBA(r1 + i1, g1 + i1, b1 + i1);
+
+ const int i2 = intensityModifier[u.idht.mode.idm.cw2][modifierIdx];
+ subblockColors[1][modifierIdx] = createRGBA(r2 + i2, g2 + i2, b2 + i2);
+ }
+
+ // 1 and 3 are the argmax and argmin of valueMappingTable
+ size_t pixelRange[2][2] = {{1, 3}, {1, 3}};
+ R8G8B8A8 rgbaBlock[16];
+ // Decode the block in rgbaBlock and store the inverse valueTableMapping
+ // of {min(modifier index), max(modifier index)}
+ for (size_t blockIdx = 0; blockIdx < 2; blockIdx++)
+ {
+ decodeSubblock(rgbaBlock, pixelRange, x, y, w, h, alphaValues, u.idht.mode.idm.flipbit,
+ blockIdx, subblockColors);
+ }
+ if (nonOpaquePunchThroughAlpha)
+ {
+ decodePunchThroughAlphaBlock(reinterpret_cast<uint8_t *>(rgbaBlock), x, y, w, h,
+ sizeof(R8G8B8A8) * 4);
+ }
+
+ // Get the "min" and "max" pixel colors that have been used.
+ R8G8B8A8 minColor;
+ const R8G8B8A8 &minColor0 = subblockColors[0][pixelRange[0][0]];
+ const R8G8B8A8 &minColor1 = subblockColors[1][pixelRange[1][0]];
+ if (minColor0.R + minColor0.G + minColor0.B < minColor1.R + minColor1.G + minColor1.B)
+ {
+ minColor = minColor0;
+ }
+ else
+ {
+ minColor = minColor1;
+ }
+
+ R8G8B8A8 maxColor;
+ const R8G8B8A8 &maxColor0 = subblockColors[0][pixelRange[0][1]];
+ const R8G8B8A8 &maxColor1 = subblockColors[1][pixelRange[1][1]];
+ if (maxColor0.R + maxColor0.G + maxColor0.B < maxColor1.R + maxColor1.G + maxColor1.B)
+ {
+ maxColor = maxColor1;
+ }
+ else
+ {
+ maxColor = maxColor0;
+ }
+
+ packBC1(dest, rgbaBlock, minColor, maxColor, !nonOpaquePunchThroughAlpha);
+ }
+
+ void transcodeTBlockToBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ // TODO (mgong): Will be implemented soon
+ UNIMPLEMENTED();
+ }
+
+ void transcodeHBlockToBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4],
+ bool nonOpaquePunchThroughAlpha) const
+ {
+ // TODO (mgong): Will be implemented soon
+ UNIMPLEMENTED();
+ }
+
+ void transcodePlanarBlockToBC1(uint8_t *dest,
+ size_t x,
+ size_t y,
+ size_t w,
+ size_t h,
+ const uint8_t alphaValues[4][4]) const
+ {
+ // TODO (mgong): Will be implemented soon
+ UNIMPLEMENTED();
+ }
+
+ // Single channel utility functions
+ int getSingleChannel(size_t x, size_t y, bool isSigned) const
+ {
+ int codeword = isSigned ? u.scblk.base_codeword.s : u.scblk.base_codeword.us;
+ return codeword + getSingleChannelModifier(x, y) * u.scblk.multiplier;
+ }
+
+ int getSingleChannelIndex(size_t x, size_t y) const
+ {
+ ASSERT(x < 4 && y < 4);
+
+ // clang-format off
+ switch (x * 4 + y)
+ {
+ case 0: return u.scblk.ma;
+ case 1: return u.scblk.mb;
+ case 2: return u.scblk.mc1 << 1 | u.scblk.mc2;
+ case 3: return u.scblk.md;
+ case 4: return u.scblk.me;
+ case 5: return u.scblk.mf1 << 2 | u.scblk.mf2;
+ case 6: return u.scblk.mg;
+ case 7: return u.scblk.mh;
+ case 8: return u.scblk.mi;
+ case 9: return u.scblk.mj;
+ case 10: return u.scblk.mk1 << 1 | u.scblk.mk2;
+ case 11: return u.scblk.ml;
+ case 12: return u.scblk.mm;
+ case 13: return u.scblk.mn1 << 2 | u.scblk.mn2;
+ case 14: return u.scblk.mo;
+ case 15: return u.scblk.mp;
+ default: UNREACHABLE(); return 0;
+ }
+ // clang-format on
+ }
+
+ int getSingleChannelModifier(size_t x, size_t y) const
+ {
+ // clang-format off
+ static const int modifierTable[16][8] =
+ {
+ { -3, -6, -9, -15, 2, 5, 8, 14 },
+ { -3, -7, -10, -13, 2, 6, 9, 12 },
+ { -2, -5, -8, -13, 1, 4, 7, 12 },
+ { -2, -4, -6, -13, 1, 3, 5, 12 },
+ { -3, -6, -8, -12, 2, 5, 7, 11 },
+ { -3, -7, -9, -11, 2, 6, 8, 10 },
+ { -4, -7, -8, -11, 3, 6, 7, 10 },
+ { -3, -5, -8, -11, 2, 4, 7, 10 },
+ { -2, -6, -8, -10, 1, 5, 7, 9 },
+ { -2, -5, -8, -10, 1, 4, 7, 9 },
+ { -2, -4, -8, -10, 1, 3, 7, 9 },
+ { -2, -5, -7, -10, 1, 4, 6, 9 },
+ { -3, -4, -7, -10, 2, 3, 6, 9 },
+ { -1, -2, -3, -10, 0, 1, 2, 9 },
+ { -4, -6, -8, -9, 3, 5, 7, 8 },
+ { -3, -5, -7, -9, 2, 4, 6, 8 }
+ };
+ // clang-format on
+
+ return modifierTable[u.scblk.table_index][getSingleChannelIndex(x, y)];
+ }
+};
+
+// clang-format off
+static const uint8_t DefaultETCAlphaValues[4][4] =
+{
+ { 255, 255, 255, 255 },
+ { 255, 255, 255, 255 },
+ { 255, 255, 255, 255 },
+ { 255, 255, 255, 255 },
+};
+// clang-format on
+
+void LoadR11EACToR8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch,
+ bool isSigned)
+{
+ for (size_t z = 0; z < depth; z++)
+ {
+ for (size_t y = 0; y < height; y += 4)
+ {
+ const ETC2Block *sourceRow =
+ OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+ uint8_t *destRow =
+ OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+ for (size_t x = 0; x < width; x += 4)
+ {
+ const ETC2Block *sourceBlock = sourceRow + (x / 4);
+ uint8_t *destPixels = destRow + x;
+
+ sourceBlock->decodeAsSingleChannel(destPixels, x, y, width, height, 1,
+ outputRowPitch, isSigned);
+ }
+ }
+ }
+}
+
+void LoadRG11EACToRG8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch,
+ bool isSigned)
+{
+ for (size_t z = 0; z < depth; z++)
+ {
+ for (size_t y = 0; y < height; y += 4)
+ {
+ const ETC2Block *sourceRow =
+ OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+ uint8_t *destRow =
+ OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+ for (size_t x = 0; x < width; x += 4)
+ {
+ uint8_t *destPixelsRed = destRow + (x * 2);
+ const ETC2Block *sourceBlockRed = sourceRow + (x / 2);
+ sourceBlockRed->decodeAsSingleChannel(destPixelsRed, x, y, width, height, 2,
+ outputRowPitch, isSigned);
+
+ uint8_t *destPixelsGreen = destPixelsRed + 1;
+ const ETC2Block *sourceBlockGreen = sourceBlockRed + 1;
+ sourceBlockGreen->decodeAsSingleChannel(destPixelsGreen, x, y, width, height, 2,
+ outputRowPitch, isSigned);
+ }
+ }
+ }
+}
+
+void LoadETC2RGB8ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch,
+ bool punchthroughAlpha)
+{
+ for (size_t z = 0; z < depth; z++)
+ {
+ for (size_t y = 0; y < height; y += 4)
+ {
+ const ETC2Block *sourceRow =
+ OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+ uint8_t *destRow =
+ OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+ for (size_t x = 0; x < width; x += 4)
+ {
+ const ETC2Block *sourceBlock = sourceRow + (x / 4);
+ uint8_t *destPixels = destRow + (x * 4);
+
+ sourceBlock->decodeAsRGB(destPixels, x, y, width, height, outputRowPitch,
+ DefaultETCAlphaValues, punchthroughAlpha);
+ }
+ }
+ }
+}
+
+void LoadETC2RGB8ToBC1(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch,
+ bool punchthroughAlpha)
+{
+ for (size_t z = 0; z < depth; z++)
+ {
+ for (size_t y = 0; y < height; y += 4)
+ {
+ const ETC2Block *sourceRow =
+ OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+ uint8_t *destRow =
+ OffsetDataPointer<uint8_t>(output, y / 4, z, outputRowPitch, outputDepthPitch);
+
+ for (size_t x = 0; x < width; x += 4)
+ {
+ const ETC2Block *sourceBlock = sourceRow + (x / 4);
+ uint8_t *destPixels = destRow + (x * 2);
+
+ sourceBlock->transcodeAsBC1(destPixels, x, y, width, height, DefaultETCAlphaValues,
+ punchthroughAlpha);
+ }
+ }
+ }
+}
+
+void LoadETC2RGBA8ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch,
+ bool srgb)
+{
+ uint8_t decodedAlphaValues[4][4];
+
+ for (size_t z = 0; z < depth; z++)
+ {
+ for (size_t y = 0; y < height; y += 4)
+ {
+ const ETC2Block *sourceRow =
+ OffsetDataPointer<ETC2Block>(input, y / 4, z, inputRowPitch, inputDepthPitch);
+ uint8_t *destRow =
+ OffsetDataPointer<uint8_t>(output, y, z, outputRowPitch, outputDepthPitch);
+
+ for (size_t x = 0; x < width; x += 4)
+ {
+ const ETC2Block *sourceBlockAlpha = sourceRow + (x / 2);
+ sourceBlockAlpha->decodeAsSingleChannel(
+ reinterpret_cast<uint8_t *>(decodedAlphaValues), x, y, width, height, 1, 4,
+ false);
+
+ uint8_t *destPixels = destRow + (x * 4);
+ const ETC2Block *sourceBlockRGB = sourceBlockAlpha + 1;
+ sourceBlockRGB->decodeAsRGB(destPixels, x, y, width, height, outputRowPitch,
+ decodedAlphaValues, false);
+ }
+ }
+ }
+}
+
+} // anonymous namespace
+
+void LoadETC1RGB8ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC1RGB8ToBC1(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGB8ToBC1(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadEACR11ToR8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadR11EACToR8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadEACR11SToR8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadR11EACToR8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadEACRG11ToRG8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadRG11EACToRG8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadEACRG11SToRG8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadRG11EACToRG8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2RGB8ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2SRGB8ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2RGB8A1ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2SRGB8A1ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGB8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, true);
+}
+
+void LoadETC2RGBA8ToRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGBA8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, false);
+}
+
+void LoadETC2SRGBA8ToSRGBA8(size_t width,
+ size_t height,
+ size_t depth,
+ const uint8_t *input,
+ size_t inputRowPitch,
+ size_t inputDepthPitch,
+ uint8_t *output,
+ size_t outputRowPitch,
+ size_t outputDepthPitch)
+{
+ LoadETC2RGBA8ToRGBA8(width, height, depth, input, inputRowPitch, inputDepthPitch, output,
+ outputRowPitch, outputDepthPitch, true);
+}
+
+} // namespace rx
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 15:03:05 +0000