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
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
|
/*
* Mesa 3-D graphics library
* Version: 7.7
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (c) 2008-2009 VMware, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file texformat.c
* Texture formats.
*
* \author Gareth Hughes
* \author Brian Paul
*/
#include "context.h"
#include "mfeatures.h"
#include "mtypes.h"
#include "texcompress.h"
#include "texformat.h"
#define RETURN_IF_SUPPORTED(f) do { \
if (ctx->TextureFormatSupported[f]) \
return f; \
} while (0)
/**
* Choose an appropriate texture format given the format, type and
* internalFormat parameters passed to glTexImage().
*
* \param ctx the GL context.
* \param internalFormat user's prefered internal texture format.
* \param format incoming image pixel format.
* \param type incoming image data type.
*
* \return a pointer to a gl_texture_format object which describes the
* choosen texture format, or NULL on failure.
*
* This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
* will typically override this function with a specialized version.
*/
gl_format
_mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
GLenum format, GLenum type )
{
(void) format;
(void) type;
switch (internalFormat) {
/* shallow RGBA formats */
case 4:
case GL_RGBA:
if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
} else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
}
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGBA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGB5_A1:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
break;
case GL_RGBA2:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
break;
case GL_RGBA4:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
break;
/* deep RGBA formats */
case GL_RGB10_A2:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGBA12:
case GL_RGBA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
/* shallow RGB formats */
case 3:
case GL_RGB:
case GL_RGB8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_R3_G3_B2:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_RGB4:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
case GL_RGB5:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
break;
/* deep RGB formats */
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
/* Alpha formats */
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
case GL_ALPHA12:
case GL_ALPHA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
/* Luminance formats */
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
case GL_LUMINANCE12:
case GL_LUMINANCE16:
RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
/* Luminance/Alpha formats */
case GL_LUMINANCE4_ALPHA4:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case 2:
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY8:
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
case GL_INTENSITY12:
case GL_INTENSITY16:
RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
case GL_COLOR_INDEX:
case GL_COLOR_INDEX1_EXT:
case GL_COLOR_INDEX2_EXT:
case GL_COLOR_INDEX4_EXT:
case GL_COLOR_INDEX12_EXT:
case GL_COLOR_INDEX16_EXT:
case GL_COLOR_INDEX8_EXT:
default:
; /* fallthrough */
}
if (ctx->Extensions.ARB_depth_texture) {
switch (internalFormat) {
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
RETURN_IF_SUPPORTED(MESA_FORMAT_Z32);
RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
break;
case GL_DEPTH_COMPONENT16:
RETURN_IF_SUPPORTED(MESA_FORMAT_Z16);
RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
default:
; /* fallthrough */
}
}
switch (internalFormat) {
case GL_COMPRESSED_ALPHA_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
break;
case GL_COMPRESSED_LUMINANCE_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
break;
case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
break;
case GL_COMPRESSED_INTENSITY_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
break;
case GL_COMPRESSED_RGB_ARB:
if (ctx->Extensions.EXT_texture_compression_s3tc ||
ctx->Extensions.S3_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
if (ctx->Extensions.TDFX_texture_compression_FXT1)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
case GL_COMPRESSED_RGBA_ARB:
if (ctx->Extensions.EXT_texture_compression_s3tc ||
ctx->Extensions.S3_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
if (ctx->Extensions.TDFX_texture_compression_FXT1)
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
default:
; /* fallthrough */
}
if (ctx->Extensions.MESA_ycbcr_texture) {
if (internalFormat == GL_YCBCR_MESA) {
if (type == GL_UNSIGNED_SHORT_8_8_MESA)
RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
else
RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
}
}
#if FEATURE_texture_fxt1
if (ctx->Extensions.TDFX_texture_compression_FXT1) {
switch (internalFormat) {
case GL_COMPRESSED_RGB_FXT1_3DFX:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
break;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
break;
default:
; /* fallthrough */
}
}
#endif
#if FEATURE_texture_s3tc
if (ctx->Extensions.EXT_texture_compression_s3tc) {
switch (internalFormat) {
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
break;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT1);
break;
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
break;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT5);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.S3_s3tc) {
switch (internalFormat) {
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
break;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
break;
default:
; /* fallthrough */
}
}
#endif
if (ctx->Extensions.ARB_texture_float) {
switch (internalFormat) {
case GL_ALPHA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_ALPHA32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_LUMINANCE16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_LUMINANCE32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_LUMINANCE_ALPHA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_LUMINANCE_ALPHA32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_INTENSITY16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_INTENSITY32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RGB16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RGB32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RGBA16F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RGBA32F_ARB:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_shared_exponent) {
switch (internalFormat) {
case GL_RGB9_E5:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
return MESA_FORMAT_RGB9_E5_FLOAT;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_packed_float) {
switch (internalFormat) {
case GL_R11F_G11F_B10F:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
return MESA_FORMAT_R11_G11_B10_FLOAT;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_packed_depth_stencil) {
switch (internalFormat) {
case GL_DEPTH_STENCIL_EXT:
case GL_DEPTH24_STENCIL8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_depth_buffer_float) {
switch (internalFormat) {
case GL_DEPTH_COMPONENT32F:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
return MESA_FORMAT_Z32_FLOAT;
case GL_DEPTH32F_STENCIL8:
ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
return MESA_FORMAT_Z32_FLOAT_X24S8;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ATI_envmap_bumpmap) {
switch (internalFormat) {
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_snorm) {
switch (internalFormat) {
case GL_RED_SNORM:
case GL_R8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
break;
case GL_RG_SNORM:
case GL_RG8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
break;
case GL_RGB_SNORM:
case GL_RGB8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
/* FALLTHROUGH */
case GL_RGBA_SNORM:
case GL_RGBA8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_ALPHA_SNORM:
case GL_ALPHA8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_LUMINANCE_SNORM:
case GL_LUMINANCE8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_LUMINANCE_ALPHA_SNORM:
case GL_LUMINANCE8_ALPHA8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_INTENSITY_SNORM:
case GL_INTENSITY8_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_R16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
break;
case GL_RG16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
break;
case GL_RGB16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
/* FALLTHROUGH */
case GL_RGBA16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_ALPHA16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_LUMINANCE16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
/* FALLTHROUGH */
case GL_LUMINANCE16_ALPHA16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
case GL_INTENSITY16_SNORM:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
break;
default:
; /* fall-through */
}
}
#if FEATURE_EXT_texture_sRGB
if (ctx->Extensions.EXT_texture_sRGB) {
switch (internalFormat) {
case GL_SRGB_EXT:
case GL_SRGB8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_SLUMINANCE_EXT:
case GL_SLUMINANCE8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_SLUMINANCE_ALPHA_EXT:
case GL_SLUMINANCE8_ALPHA8_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SLUMINANCE_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_EXT:
#if FEATURE_texture_s3tc
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
#endif
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_ALPHA_EXT:
#if FEATURE_texture_s3tc
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
#endif
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
#if FEATURE_texture_s3tc
case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT1);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
if (ctx->Extensions.EXT_texture_compression_s3tc)
RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
break;
#endif
default:
; /* fallthrough */
}
}
#endif /* FEATURE_EXT_texture_sRGB */
if (ctx->Extensions.EXT_texture_integer) {
switch (internalFormat) {
case GL_RGBA32UI_EXT:
case GL_RGB32UI_EXT:
case GL_ALPHA32UI_EXT:
case GL_INTENSITY32UI_EXT:
case GL_LUMINANCE32UI_EXT:
case GL_LUMINANCE_ALPHA32UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
break;
case GL_RGBA16UI_EXT:
case GL_RGB16UI_EXT:
case GL_ALPHA16UI_EXT:
case GL_INTENSITY16UI_EXT:
case GL_LUMINANCE16UI_EXT:
case GL_LUMINANCE_ALPHA16UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
break;
case GL_RGBA8UI_EXT:
case GL_RGB8UI_EXT:
case GL_ALPHA8UI_EXT:
case GL_INTENSITY8UI_EXT:
case GL_LUMINANCE8UI_EXT:
case GL_LUMINANCE_ALPHA8UI_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
break;
case GL_RGBA32I_EXT:
case GL_RGB32I_EXT:
case GL_ALPHA32I_EXT:
case GL_INTENSITY32I_EXT:
case GL_LUMINANCE32I_EXT:
case GL_LUMINANCE_ALPHA32I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
break;
case GL_RGBA16I_EXT:
case GL_RGB16I_EXT:
case GL_ALPHA16I_EXT:
case GL_INTENSITY16I_EXT:
case GL_LUMINANCE16I_EXT:
case GL_LUMINANCE_ALPHA16I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
break;
case GL_RGBA8I_EXT:
case GL_RGB8I_EXT:
case GL_ALPHA8I_EXT:
case GL_INTENSITY8I_EXT:
case GL_LUMINANCE8I_EXT:
case GL_LUMINANCE_ALPHA8I_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
break;
}
}
if (ctx->Extensions.ARB_texture_rg) {
switch (internalFormat) {
case GL_R8:
case GL_RED:
RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
break;
case GL_COMPRESSED_RED:
RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
break;
case GL_R16:
RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
break;
case GL_RG:
case GL_RG8:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG88);
break;
case GL_COMPRESSED_RG:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG88);
break;
case GL_RG16:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG1616);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
switch (internalFormat) {
case GL_R16F:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_R32F:
RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RG16F:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
case GL_RG32F:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_format_BGRA8888) {
switch (internalFormat) {
case GL_BGRA:
RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ARB_texture_compression_rgtc) {
switch (internalFormat) {
case GL_COMPRESSED_RED_RGTC1:
RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
break;
case GL_COMPRESSED_SIGNED_RED_RGTC1:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RED_RGTC1);
break;
case GL_COMPRESSED_RG_RGTC2:
RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
break;
case GL_COMPRESSED_SIGNED_RG_RGTC2:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG_RGTC2);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.EXT_texture_compression_latc) {
switch (internalFormat) {
case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1);
break;
case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1);
break;
case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
break;
case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2);
break;
default:
; /* fallthrough */
}
}
if (ctx->Extensions.ATI_texture_compression_3dc) {
switch (internalFormat) {
case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
break;
default:
; /* fallthrough */
}
}
_mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
return MESA_FORMAT_NONE;
}
|
