1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
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
|
//
// Copyright (c) 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.
//
// validationEGL.cpp: Validation functions for generic EGL entry point parameters
#include "libANGLE/validationEGL.h"
#include "libANGLE/Config.h"
#include "libANGLE/Context.h"
#include "libANGLE/Display.h"
#include "libANGLE/Surface.h"
#include <EGL/eglext.h>
namespace egl
{
Error ValidateDisplay(const Display *display)
{
if (display == EGL_NO_DISPLAY)
{
return Error(EGL_BAD_DISPLAY);
}
if (!display->isInitialized())
{
return Error(EGL_NOT_INITIALIZED);
}
return Error(EGL_SUCCESS);
}
Error ValidateSurface(const Display *display, Surface *surface)
{
Error error = ValidateDisplay(display);
if (error.isError())
{
return error;
}
if (!display->isValidSurface(surface))
{
return Error(EGL_BAD_SURFACE);
}
return Error(EGL_SUCCESS);
}
Error ValidateConfig(const Display *display, const Config *config)
{
Error error = ValidateDisplay(display);
if (error.isError())
{
return error;
}
if (!display->isValidConfig(config))
{
return Error(EGL_BAD_CONFIG);
}
return Error(EGL_SUCCESS);
}
Error ValidateContext(const Display *display, gl::Context *context)
{
Error error = ValidateDisplay(display);
if (error.isError())
{
return error;
}
if (!display->isValidContext(context))
{
return Error(EGL_BAD_CONTEXT);
}
return Error(EGL_SUCCESS);
}
Error ValidateCreateContext(Display *display, Config *configuration, gl::Context *shareContext,
const AttributeMap& attributes)
{
Error error = ValidateConfig(display, configuration);
if (error.isError())
{
return error;
}
// Get the requested client version (default is 1) and check it is 2 or 3.
EGLint clientMajorVersion = 1;
EGLint clientMinorVersion = 0;
EGLint contextFlags = 0;
bool resetNotification = false;
bool robustAccess = false;
for (AttributeMap::const_iterator attributeIter = attributes.begin(); attributeIter != attributes.end(); attributeIter++)
{
EGLint attribute = attributeIter->first;
EGLint value = attributeIter->second;
switch (attribute)
{
case EGL_CONTEXT_CLIENT_VERSION:
clientMajorVersion = value;
break;
case EGL_CONTEXT_MINOR_VERSION:
clientMinorVersion = value;
break;
case EGL_CONTEXT_FLAGS_KHR:
contextFlags = value;
break;
case EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR:
// Only valid for OpenGL (non-ES) contexts
return Error(EGL_BAD_ATTRIBUTE);
case EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT:
if (!display->getExtensions().createContextRobustness)
{
return Error(EGL_BAD_ATTRIBUTE);
}
if (value != EGL_TRUE && value != EGL_FALSE)
{
return Error(EGL_BAD_ATTRIBUTE);
}
robustAccess = (value == EGL_TRUE);
break;
case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR:
static_assert(EGL_LOSE_CONTEXT_ON_RESET_EXT == EGL_LOSE_CONTEXT_ON_RESET_KHR, "EGL extension enums not equal.");
static_assert(EGL_NO_RESET_NOTIFICATION_EXT == EGL_NO_RESET_NOTIFICATION_KHR, "EGL extension enums not equal.");
// same as EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT, fall through
case EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT:
if (!display->getExtensions().createContextRobustness)
{
return Error(EGL_BAD_ATTRIBUTE);
}
if (value == EGL_LOSE_CONTEXT_ON_RESET_EXT)
{
resetNotification = true;
}
else if (value != EGL_NO_RESET_NOTIFICATION_EXT)
{
return Error(EGL_BAD_ATTRIBUTE);
}
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
}
if ((clientMajorVersion != 2 && clientMajorVersion != 3) || clientMinorVersion != 0)
{
return Error(EGL_BAD_CONFIG);
}
if (clientMajorVersion == 3 && !(configuration->conformant & EGL_OPENGL_ES3_BIT_KHR) && !(configuration->configCaveat & EGL_NON_CONFORMANT_CONFIG))
{
return Error(EGL_BAD_CONFIG);
}
// Note: EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR does not apply to ES
const EGLint validContextFlags = (EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR |
EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR);
if ((contextFlags & ~validContextFlags) != 0)
{
return Error(EGL_BAD_ATTRIBUTE);
}
if ((contextFlags & EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR) > 0)
{
robustAccess = true;
}
if (robustAccess)
{
// Unimplemented
return Error(EGL_BAD_CONFIG);
}
if (shareContext)
{
// Shared context is invalid or is owned by another display
if (!display->isValidContext(shareContext))
{
return Error(EGL_BAD_MATCH);
}
if (shareContext->isResetNotificationEnabled() != resetNotification)
{
return Error(EGL_BAD_MATCH);
}
if (shareContext->getClientVersion() != clientMajorVersion)
{
return Error(EGL_BAD_CONTEXT);
}
}
return Error(EGL_SUCCESS);
}
Error ValidateCreateWindowSurface(Display *display, Config *config, EGLNativeWindowType window,
const AttributeMap& attributes)
{
Error error = ValidateConfig(display, config);
if (error.isError())
{
return error;
}
if (!display->isValidNativeWindow(window))
{
return Error(EGL_BAD_NATIVE_WINDOW);
}
const DisplayExtensions &displayExtensions = display->getExtensions();
for (AttributeMap::const_iterator attributeIter = attributes.begin(); attributeIter != attributes.end(); attributeIter++)
{
EGLint attribute = attributeIter->first;
EGLint value = attributeIter->second;
switch (attribute)
{
case EGL_RENDER_BUFFER:
switch (value)
{
case EGL_BACK_BUFFER:
break;
case EGL_SINGLE_BUFFER:
return Error(EGL_BAD_MATCH); // Rendering directly to front buffer not supported
default:
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_POST_SUB_BUFFER_SUPPORTED_NV:
if (!displayExtensions.postSubBuffer)
{
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_WIDTH:
case EGL_HEIGHT:
if (!displayExtensions.windowFixedSize)
{
return Error(EGL_BAD_ATTRIBUTE);
}
if (value < 0)
{
return Error(EGL_BAD_PARAMETER);
}
break;
case EGL_FIXED_SIZE_ANGLE:
if (!displayExtensions.windowFixedSize)
{
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_VG_COLORSPACE:
return Error(EGL_BAD_MATCH);
case EGL_VG_ALPHA_FORMAT:
return Error(EGL_BAD_MATCH);
default:
return Error(EGL_BAD_ATTRIBUTE);
}
}
if (Display::hasExistingWindowSurface(window))
{
return Error(EGL_BAD_ALLOC);
}
return Error(EGL_SUCCESS);
}
Error ValidateCreatePbufferSurface(Display *display, Config *config, const AttributeMap& attributes)
{
Error error = ValidateConfig(display, config);
if (error.isError())
{
return error;
}
for (AttributeMap::const_iterator attributeIter = attributes.begin(); attributeIter != attributes.end(); attributeIter++)
{
EGLint attribute = attributeIter->first;
EGLint value = attributeIter->second;
switch (attribute)
{
case EGL_WIDTH:
case EGL_HEIGHT:
if (value < 0)
{
return Error(EGL_BAD_PARAMETER);
}
break;
case EGL_LARGEST_PBUFFER:
break;
case EGL_TEXTURE_FORMAT:
switch (value)
{
case EGL_NO_TEXTURE:
case EGL_TEXTURE_RGB:
case EGL_TEXTURE_RGBA:
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_TEXTURE_TARGET:
switch (value)
{
case EGL_NO_TEXTURE:
case EGL_TEXTURE_2D:
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_MIPMAP_TEXTURE:
break;
case EGL_VG_COLORSPACE:
break;
case EGL_VG_ALPHA_FORMAT:
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
}
if (!(config->surfaceType & EGL_PBUFFER_BIT))
{
return Error(EGL_BAD_MATCH);
}
const Caps &caps = display->getCaps();
EGLenum textureFormat = attributes.get(EGL_TEXTURE_FORMAT, EGL_NO_TEXTURE);
EGLenum textureTarget = attributes.get(EGL_TEXTURE_TARGET, EGL_NO_TEXTURE);
if ((textureFormat != EGL_NO_TEXTURE && textureTarget == EGL_NO_TEXTURE) ||
(textureFormat == EGL_NO_TEXTURE && textureTarget != EGL_NO_TEXTURE))
{
return Error(EGL_BAD_MATCH);
}
if ((textureFormat == EGL_TEXTURE_RGB && config->bindToTextureRGB != EGL_TRUE) ||
(textureFormat == EGL_TEXTURE_RGBA && config->bindToTextureRGBA != EGL_TRUE))
{
return Error(EGL_BAD_ATTRIBUTE);
}
EGLint width = attributes.get(EGL_WIDTH, 0);
EGLint height = attributes.get(EGL_HEIGHT, 0);
if (textureFormat != EGL_NO_TEXTURE && !caps.textureNPOT && (!gl::isPow2(width) || !gl::isPow2(height)))
{
return Error(EGL_BAD_MATCH);
}
return Error(EGL_SUCCESS);
}
Error ValidateCreatePbufferFromClientBuffer(Display *display, EGLenum buftype, EGLClientBuffer buffer,
Config *config, const AttributeMap& attributes)
{
Error error = ValidateConfig(display, config);
if (error.isError())
{
return error;
}
const DisplayExtensions &displayExtensions = display->getExtensions();
switch (buftype)
{
case EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE:
if (!displayExtensions.d3dShareHandleClientBuffer)
{
return Error(EGL_BAD_PARAMETER);
}
if (buffer == nullptr)
{
return Error(EGL_BAD_PARAMETER);
}
break;
default:
return Error(EGL_BAD_PARAMETER);
}
for (AttributeMap::const_iterator attributeIter = attributes.begin(); attributeIter != attributes.end(); attributeIter++)
{
EGLint attribute = attributeIter->first;
EGLint value = attributeIter->second;
switch (attribute)
{
case EGL_WIDTH:
case EGL_HEIGHT:
if (!displayExtensions.d3dShareHandleClientBuffer)
{
return Error(EGL_BAD_PARAMETER);
}
if (value < 0)
{
return Error(EGL_BAD_PARAMETER);
}
break;
case EGL_TEXTURE_FORMAT:
switch (value)
{
case EGL_NO_TEXTURE:
case EGL_TEXTURE_RGB:
case EGL_TEXTURE_RGBA:
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_TEXTURE_TARGET:
switch (value)
{
case EGL_NO_TEXTURE:
case EGL_TEXTURE_2D:
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
break;
case EGL_MIPMAP_TEXTURE:
break;
default:
return Error(EGL_BAD_ATTRIBUTE);
}
}
if (!(config->surfaceType & EGL_PBUFFER_BIT))
{
return Error(EGL_BAD_MATCH);
}
EGLenum textureFormat = attributes.get(EGL_TEXTURE_FORMAT, EGL_NO_TEXTURE);
EGLenum textureTarget = attributes.get(EGL_TEXTURE_TARGET, EGL_NO_TEXTURE);
if ((textureFormat != EGL_NO_TEXTURE && textureTarget == EGL_NO_TEXTURE) ||
(textureFormat == EGL_NO_TEXTURE && textureTarget != EGL_NO_TEXTURE))
{
return Error(EGL_BAD_MATCH);
}
if ((textureFormat == EGL_TEXTURE_RGB && config->bindToTextureRGB != EGL_TRUE) ||
(textureFormat == EGL_TEXTURE_RGBA && config->bindToTextureRGBA != EGL_TRUE))
{
return Error(EGL_BAD_ATTRIBUTE);
}
if (buftype == EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE)
{
EGLint width = attributes.get(EGL_WIDTH, 0);
EGLint height = attributes.get(EGL_HEIGHT, 0);
if (width == 0 || height == 0)
{
return Error(EGL_BAD_ATTRIBUTE);
}
#if !defined(ANGLE_ENABLE_WINDOWS_STORE) // On Windows Store, we know the originating texture came from D3D11, so bypass this check
const Caps &caps = display->getCaps();
if (textureFormat != EGL_NO_TEXTURE && !caps.textureNPOT && (!gl::isPow2(width) || !gl::isPow2(height)))
{
return Error(EGL_BAD_MATCH);
}
#endif
}
return Error(EGL_SUCCESS);
}
}
|
