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mesa: remove FEATURE_EXT_texture_sRGB define.
[mesa.git] / src / mesa / main / texformat.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.7
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (c) 2008-2009 VMware, Inc.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /**
28 * \file texformat.c
29 * Texture formats.
30 *
31 * \author Gareth Hughes
32 * \author Brian Paul
33 */
34
35
36 #include "context.h"
37 #include "enums.h"
38 #include "mfeatures.h"
39 #include "mtypes.h"
40 #include "texcompress.h"
41 #include "texformat.h"
42
43 #define RETURN_IF_SUPPORTED(f) do { \
44 if (ctx->TextureFormatSupported[f]) \
45 return f; \
46 } while (0)
47
48 /**
49 * Choose an appropriate texture format given the format, type and
50 * internalFormat parameters passed to glTexImage().
51 *
52 * \param ctx the GL context.
53 * \param internalFormat user's prefered internal texture format.
54 * \param format incoming image pixel format.
55 * \param type incoming image data type.
56 *
57 * \return a pointer to a gl_texture_format object which describes the
58 * choosen texture format, or NULL on failure.
59 *
60 * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
61 * will typically override this function with a specialized version.
62 */
63 gl_format
64 _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
65 GLint internalFormat, GLenum format, GLenum type)
66 {
67 (void) format;
68 (void) type;
69
70 switch (internalFormat) {
71 /* shallow RGBA formats */
72 case 4:
73 case GL_RGBA:
74 if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
75 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
76 } else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
77 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
78 }
79 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
80 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
81 break;
82
83 case GL_RGBA8:
84 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
85 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
86 break;
87 case GL_RGB5_A1:
88 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
89 break;
90 case GL_RGBA2:
91 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
92 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
93 break;
94 case GL_RGBA4:
95 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
96 break;
97
98 /* deep RGBA formats */
99 case GL_RGB10_A2:
100 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
101 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
102 break;
103 case GL_RGBA12:
104 case GL_RGBA16:
105 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
106 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
107 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
108 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
109 break;
110
111 /* shallow RGB formats */
112 case 3:
113 case GL_RGB:
114 case GL_RGB8:
115 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
116 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
117 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
118 break;
119 case GL_R3_G3_B2:
120 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
121 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
122 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV);
123 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
124 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
125 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
126 break;
127 case GL_RGB4:
128 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
129 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
130 break;
131 case GL_RGB5:
132 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
133 break;
134
135 /* deep RGB formats */
136 case GL_RGB10:
137 case GL_RGB12:
138 case GL_RGB16:
139 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
140 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
141 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
142 break;
143
144 /* Alpha formats */
145 case GL_ALPHA:
146 case GL_ALPHA4:
147 case GL_ALPHA8:
148 RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
149 break;
150
151 case GL_ALPHA12:
152 case GL_ALPHA16:
153 RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
154 RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
155 break;
156
157 /* Luminance formats */
158 case 1:
159 case GL_LUMINANCE:
160 case GL_LUMINANCE4:
161 case GL_LUMINANCE8:
162 RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
163 break;
164
165 case GL_LUMINANCE12:
166 case GL_LUMINANCE16:
167 RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
168 RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
169 break;
170
171 /* Luminance/Alpha formats */
172 case GL_LUMINANCE4_ALPHA4:
173 RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
174 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
175 break;
176
177 case 2:
178 case GL_LUMINANCE_ALPHA:
179 case GL_LUMINANCE6_ALPHA2:
180 case GL_LUMINANCE8_ALPHA8:
181 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
182 break;
183
184 case GL_LUMINANCE12_ALPHA4:
185 case GL_LUMINANCE12_ALPHA12:
186 case GL_LUMINANCE16_ALPHA16:
187 RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
188 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
189 break;
190
191 case GL_INTENSITY:
192 case GL_INTENSITY4:
193 case GL_INTENSITY8:
194 RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
195 break;
196
197 case GL_INTENSITY12:
198 case GL_INTENSITY16:
199 RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
200 RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
201 break;
202
203 default:
204 ; /* fallthrough */
205 }
206
207 if (ctx->Extensions.ARB_depth_texture) {
208 switch (internalFormat) {
209 case GL_DEPTH_COMPONENT:
210 case GL_DEPTH_COMPONENT24:
211 case GL_DEPTH_COMPONENT32:
212 RETURN_IF_SUPPORTED(MESA_FORMAT_Z32);
213 RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
214 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
215 break;
216 case GL_DEPTH_COMPONENT16:
217 RETURN_IF_SUPPORTED(MESA_FORMAT_Z16);
218 RETURN_IF_SUPPORTED(MESA_FORMAT_X8_Z24);
219 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
220 default:
221 ; /* fallthrough */
222 }
223 }
224
225 switch (internalFormat) {
226 case GL_COMPRESSED_ALPHA_ARB:
227 RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
228 break;
229 case GL_COMPRESSED_LUMINANCE_ARB:
230 RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
231 break;
232 case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
233 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
234 break;
235 case GL_COMPRESSED_INTENSITY_ARB:
236 RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
237 break;
238 case GL_COMPRESSED_RGB_ARB:
239 /* We don't use texture compression for 1D and 1D array textures.
240 * For 1D textures, compressions doesn't buy us much.
241 * For 1D ARRAY textures, there's complicated issues with updating
242 * sub-regions on non-block boundaries with glCopyTexSubImage, among
243 * other issues. FWIW, the GL_EXT_texture_array extension prohibits
244 * 1D ARRAY textures in S3TC format.
245 */
246 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
247 if (ctx->Extensions.EXT_texture_compression_s3tc ||
248 ctx->Extensions.S3_s3tc)
249 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
250 if (ctx->Extensions.TDFX_texture_compression_FXT1)
251 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
252 }
253 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
254 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
255 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
256 break;
257 case GL_COMPRESSED_RGBA_ARB:
258 /* We don't use texture compression for 1D and 1D array textures. */
259 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY) {
260 if (ctx->Extensions.EXT_texture_compression_s3tc ||
261 ctx->Extensions.S3_s3tc)
262 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
263 if (ctx->Extensions.TDFX_texture_compression_FXT1)
264 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
265 }
266 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
267 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
268 break;
269 default:
270 ; /* fallthrough */
271 }
272
273 if (ctx->Extensions.ARB_ES2_compatibility) {
274 switch (internalFormat) {
275 case GL_RGB565:
276 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
277 break;
278 default:
279 ; /* fallthrough */
280 }
281 }
282
283 if (ctx->Extensions.MESA_ycbcr_texture) {
284 if (internalFormat == GL_YCBCR_MESA) {
285 if (type == GL_UNSIGNED_SHORT_8_8_MESA)
286 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
287 else
288 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
289 }
290 }
291
292 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
293 switch (internalFormat) {
294 case GL_COMPRESSED_RGB_FXT1_3DFX:
295 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
296 break;
297 case GL_COMPRESSED_RGBA_FXT1_3DFX:
298 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
299 break;
300 default:
301 ; /* fallthrough */
302 }
303 }
304
305 if (ctx->Extensions.EXT_texture_compression_s3tc) {
306 switch (internalFormat) {
307 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
308 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
309 break;
310 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
311 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT1);
312 break;
313 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
314 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
315 break;
316 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
317 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT5);
318 break;
319 default:
320 ; /* fallthrough */
321 }
322 }
323
324 if (ctx->Extensions.S3_s3tc) {
325 switch (internalFormat) {
326 case GL_RGB_S3TC:
327 case GL_RGB4_S3TC:
328 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
329 break;
330 case GL_RGBA_S3TC:
331 case GL_RGBA4_S3TC:
332 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
333 break;
334 default:
335 ; /* fallthrough */
336 }
337 }
338
339 if (ctx->Extensions.ARB_texture_float) {
340 switch (internalFormat) {
341 case GL_ALPHA16F_ARB:
342 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
343 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
344 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
345 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
346 break;
347 case GL_ALPHA32F_ARB:
348 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
349 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
350 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
351 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
352 break;
353 case GL_LUMINANCE16F_ARB:
354 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
355 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
356 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
357 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
358 break;
359 case GL_LUMINANCE32F_ARB:
360 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
361 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
362 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
363 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
364 break;
365 case GL_LUMINANCE_ALPHA16F_ARB:
366 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
367 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
368 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
369 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
370 break;
371 case GL_LUMINANCE_ALPHA32F_ARB:
372 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
373 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
374 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
375 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
376 break;
377 case GL_INTENSITY16F_ARB:
378 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
379 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
380 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
381 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
382 break;
383 case GL_INTENSITY32F_ARB:
384 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
385 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
386 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
387 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
388 break;
389 case GL_RGB16F_ARB:
390 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
391 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
392 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
393 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
394 break;
395 case GL_RGB32F_ARB:
396 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
397 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
398 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
399 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
400 break;
401 case GL_RGBA16F_ARB:
402 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
403 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
404 break;
405 case GL_RGBA32F_ARB:
406 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
407 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
408 break;
409 default:
410 ; /* fallthrough */
411 }
412 }
413
414 if (ctx->Extensions.EXT_texture_shared_exponent) {
415 switch (internalFormat) {
416 case GL_RGB9_E5:
417 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
418 return MESA_FORMAT_RGB9_E5_FLOAT;
419 default:
420 ; /* fallthrough */
421 }
422 }
423
424 if (ctx->Extensions.EXT_packed_float) {
425 switch (internalFormat) {
426 case GL_R11F_G11F_B10F:
427 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
428 return MESA_FORMAT_R11_G11_B10_FLOAT;
429 default:
430 ; /* fallthrough */
431 }
432 }
433
434 if (ctx->Extensions.EXT_packed_depth_stencil) {
435 switch (internalFormat) {
436 case GL_DEPTH_STENCIL_EXT:
437 case GL_DEPTH24_STENCIL8_EXT:
438 RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
439 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
440 break;
441 default:
442 ; /* fallthrough */
443 }
444 }
445
446 if (ctx->Extensions.ARB_depth_buffer_float) {
447 switch (internalFormat) {
448 case GL_DEPTH_COMPONENT32F:
449 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
450 return MESA_FORMAT_Z32_FLOAT;
451 case GL_DEPTH32F_STENCIL8:
452 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
453 return MESA_FORMAT_Z32_FLOAT_X24S8;
454 default:
455 ; /* fallthrough */
456 }
457 }
458
459 if (ctx->Extensions.ATI_envmap_bumpmap) {
460 switch (internalFormat) {
461 case GL_DUDV_ATI:
462 case GL_DU8DV8_ATI:
463 RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
464 break;
465 default:
466 ; /* fallthrough */
467 }
468 }
469
470 if (ctx->Extensions.EXT_texture_snorm) {
471 switch (internalFormat) {
472 case GL_RED_SNORM:
473 case GL_R8_SNORM:
474 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
475 break;
476 case GL_RG_SNORM:
477 case GL_RG8_SNORM:
478 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
479 break;
480 case GL_RGB_SNORM:
481 case GL_RGB8_SNORM:
482 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
483 /* FALLTHROUGH */
484 case GL_RGBA_SNORM:
485 case GL_RGBA8_SNORM:
486 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
487 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
488 break;
489 case GL_ALPHA_SNORM:
490 case GL_ALPHA8_SNORM:
491 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
492 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
493 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
494 break;
495 case GL_LUMINANCE_SNORM:
496 case GL_LUMINANCE8_SNORM:
497 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
498 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
499 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
500 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
501 break;
502 case GL_LUMINANCE_ALPHA_SNORM:
503 case GL_LUMINANCE8_ALPHA8_SNORM:
504 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
505 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
506 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
507 break;
508 case GL_INTENSITY_SNORM:
509 case GL_INTENSITY8_SNORM:
510 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
511 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
512 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
513 break;
514 case GL_R16_SNORM:
515 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
516 break;
517 case GL_RG16_SNORM:
518 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
519 break;
520 case GL_RGB16_SNORM:
521 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
522 /* FALLTHROUGH */
523 case GL_RGBA16_SNORM:
524 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
525 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
526 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
527 break;
528 case GL_ALPHA16_SNORM:
529 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
530 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
531 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
532 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
533 break;
534 case GL_LUMINANCE16_SNORM:
535 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
536 /* FALLTHROUGH */
537 case GL_LUMINANCE16_ALPHA16_SNORM:
538 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
539 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
540 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
541 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
542 break;
543 case GL_INTENSITY16_SNORM:
544 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
545 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
546 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
547 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
548 break;
549 default:
550 ; /* fall-through */
551 }
552 }
553
554 if (ctx->Extensions.EXT_texture_sRGB) {
555 switch (internalFormat) {
556 case GL_SRGB_EXT:
557 case GL_SRGB8_EXT:
558 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
559 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
560 break;
561 case GL_SRGB_ALPHA_EXT:
562 case GL_SRGB8_ALPHA8_EXT:
563 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
564 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
565 break;
566 case GL_SLUMINANCE_EXT:
567 case GL_SLUMINANCE8_EXT:
568 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
569 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
570 break;
571 case GL_SLUMINANCE_ALPHA_EXT:
572 case GL_SLUMINANCE8_ALPHA8_EXT:
573 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
574 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
575 break;
576 case GL_COMPRESSED_SLUMINANCE_EXT:
577 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
578 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
579 break;
580 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
581 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
582 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
583 break;
584 case GL_COMPRESSED_SRGB_EXT:
585 if (ctx->Extensions.EXT_texture_compression_s3tc)
586 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
587 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
588 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
589 break;
590 case GL_COMPRESSED_SRGB_ALPHA_EXT:
591 if (ctx->Extensions.EXT_texture_compression_s3tc)
592 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
593 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
594 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
595 break;
596 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
597 if (ctx->Extensions.EXT_texture_compression_s3tc)
598 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
599 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
600 break;
601 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
602 if (ctx->Extensions.EXT_texture_compression_s3tc)
603 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT1);
604 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
605 break;
606 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
607 if (ctx->Extensions.EXT_texture_compression_s3tc)
608 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
609 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
610 break;
611 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
612 if (ctx->Extensions.EXT_texture_compression_s3tc)
613 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
614 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
615 break;
616 default:
617 ; /* fallthrough */
618 }
619 }
620
621 if (ctx->Extensions.EXT_texture_integer) {
622 switch (internalFormat) {
623 case GL_ALPHA8UI_EXT:
624 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
625 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
626 break;
627 case GL_ALPHA16UI_EXT:
628 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
629 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
630 break;
631 case GL_ALPHA32UI_EXT:
632 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
633 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
634 break;
635 case GL_ALPHA8I_EXT:
636 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
637 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
638 break;
639 case GL_ALPHA16I_EXT:
640 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
641 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
642 break;
643 case GL_ALPHA32I_EXT:
644 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
645 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
646 break;
647 case GL_LUMINANCE8UI_EXT:
648 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
649 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
650 break;
651 case GL_LUMINANCE16UI_EXT:
652 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
653 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
654 break;
655 case GL_LUMINANCE32UI_EXT:
656 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
657 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
658 break;
659 case GL_LUMINANCE8I_EXT:
660 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
661 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
662 break;
663 case GL_LUMINANCE16I_EXT:
664 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
665 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
666 break;
667 case GL_LUMINANCE32I_EXT:
668 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
669 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
670 break;
671 case GL_LUMINANCE_ALPHA8UI_EXT:
672 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
673 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
674 break;
675 case GL_LUMINANCE_ALPHA16UI_EXT:
676 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
677 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
678 break;
679 case GL_LUMINANCE_ALPHA32UI_EXT:
680 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
681 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
682 break;
683 case GL_LUMINANCE_ALPHA8I_EXT:
684 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
685 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
686 break;
687 case GL_LUMINANCE_ALPHA16I_EXT:
688 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
689 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
690 break;
691 case GL_LUMINANCE_ALPHA32I_EXT:
692 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
693 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
694 break;
695 case GL_INTENSITY8UI_EXT:
696 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
697 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
698 break;
699 case GL_INTENSITY16UI_EXT:
700 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
701 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
702 break;
703 case GL_INTENSITY32UI_EXT:
704 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
705 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
706 break;
707 case GL_INTENSITY8I_EXT:
708 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
709 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
710 break;
711 case GL_INTENSITY16I_EXT:
712 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
713 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
714 break;
715 case GL_INTENSITY32I_EXT:
716 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
717 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
718 break;
719 }
720 }
721
722 if (ctx->Version >= 30 ||
723 ctx->Extensions.EXT_texture_integer) {
724 switch (internalFormat) {
725 case GL_RGB8UI_EXT:
726 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
727 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
728 break;
729 case GL_RGB16UI_EXT:
730 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
731 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
732 break;
733 case GL_RGB32UI_EXT:
734 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
735 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
736 break;
737 case GL_RGB8I_EXT:
738 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
739 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
740 break;
741 case GL_RGB16I_EXT:
742 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
743 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
744 break;
745 case GL_RGB32I_EXT:
746 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
747 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
748 break;
749 case GL_RGBA8UI_EXT:
750 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
751 break;
752 case GL_RGBA16UI_EXT:
753 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
754 break;
755 case GL_RGBA32UI_EXT:
756 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
757 break;
758 case GL_RGBA8I_EXT:
759 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
760 break;
761 case GL_RGBA16I_EXT:
762 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
763 break;
764 case GL_RGBA32I_EXT:
765 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
766 break;
767 }
768 }
769
770 if (ctx->Extensions.ARB_texture_rg) {
771 switch (internalFormat) {
772 case GL_R8:
773 case GL_RED:
774 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
775 break;
776
777 case GL_COMPRESSED_RED:
778 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
779 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
780 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
781 break;
782
783 case GL_R16:
784 RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
785 break;
786
787 case GL_RG:
788 case GL_RG8:
789 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
790 break;
791
792 case GL_COMPRESSED_RG:
793 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
794 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
795 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
796 break;
797
798 case GL_RG16:
799 RETURN_IF_SUPPORTED(MESA_FORMAT_RG1616);
800 break;
801
802 default:
803 ; /* fallthrough */
804 }
805 }
806
807 if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
808 switch (internalFormat) {
809 case GL_R16F:
810 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
811 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
812 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
813 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
814 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
815 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
816 break;
817 case GL_R32F:
818 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
819 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
820 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
821 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
822 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
823 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
824 break;
825 case GL_RG16F:
826 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
827 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
828 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
829 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
830 break;
831 case GL_RG32F:
832 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
833 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
834 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
835 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
836 break;
837
838 default:
839 ; /* fallthrough */
840 }
841 }
842
843 if (ctx->Version >= 30 ||
844 (ctx->Extensions.ARB_texture_rg &&
845 ctx->Extensions.EXT_texture_integer)) {
846 switch (internalFormat) {
847 case GL_R8UI:
848 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
849 break;
850 case GL_RG8UI:
851 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
852 break;
853 case GL_R16UI:
854 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
855 break;
856 case GL_RG16UI:
857 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
858 break;
859 case GL_R32UI:
860 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
861 break;
862 case GL_RG32UI:
863 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
864 break;
865 case GL_R8I:
866 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT8);
867 break;
868 case GL_RG8I:
869 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT8);
870 break;
871 case GL_R16I:
872 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT16);
873 break;
874 case GL_RG16I:
875 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT16);
876 break;
877 case GL_R32I:
878 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT32);
879 break;
880 case GL_RG32I:
881 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT32);
882 break;
883 default:
884 break;
885 }
886 }
887
888 if (ctx->Extensions.ARB_texture_rgb10_a2ui) {
889 switch (internalFormat) {
890 case GL_RGB10_A2UI:
891 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010_UINT);
892 RETURN_IF_SUPPORTED(MESA_FORMAT_ABGR2101010_UINT);
893 break;
894 default:
895 break;
896 }
897 }
898 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
899 */
900 if (_mesa_is_gles(ctx)) {
901 switch (internalFormat) {
902 case GL_BGRA:
903 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
904 break;
905
906 default:
907 ; /* fallthrough */
908 }
909 }
910
911 if (ctx->Extensions.ARB_texture_compression_rgtc) {
912 switch (internalFormat) {
913 case GL_COMPRESSED_RED_RGTC1:
914 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
915 break;
916 case GL_COMPRESSED_SIGNED_RED_RGTC1:
917 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RED_RGTC1);
918 break;
919 case GL_COMPRESSED_RG_RGTC2:
920 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
921 break;
922 case GL_COMPRESSED_SIGNED_RG_RGTC2:
923 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG_RGTC2);
924 break;
925 default:
926 ; /* fallthrough */
927 }
928 }
929
930 if (ctx->Extensions.EXT_texture_compression_latc) {
931 switch (internalFormat) {
932 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
933 RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1);
934 break;
935 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
936 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1);
937 break;
938 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
939 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
940 break;
941 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
942 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2);
943 break;
944 default:
945 ; /* fallthrough */
946 }
947 }
948
949 if (ctx->Extensions.ATI_texture_compression_3dc) {
950 switch (internalFormat) {
951 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
952 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
953 break;
954 default:
955 ; /* fallthrough */
956 }
957 }
958
959 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
960 switch (internalFormat) {
961 case GL_ETC1_RGB8_OES:
962 RETURN_IF_SUPPORTED(MESA_FORMAT_ETC1_RGB8);
963 break;
964 default:
965 ; /* fallthrough */
966 }
967 }
968
969 _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
970 _mesa_lookup_enum_by_nr(internalFormat));
971 return MESA_FORMAT_NONE;
972 }
973