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
_mesa_choose_tex_format(struct gl_context * ctx,GLenum target,GLint internalFormat,GLenum format,GLenum type)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 FEATURE_texture_fxt1
293 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
294 switch (internalFormat) {
295 case GL_COMPRESSED_RGB_FXT1_3DFX:
296 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
297 break;
298 case GL_COMPRESSED_RGBA_FXT1_3DFX:
299 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
300 break;
301 default:
302 ; /* fallthrough */
303 }
304 }
305 #endif
306
307 #if FEATURE_texture_s3tc
308 if (ctx->Extensions.EXT_texture_compression_s3tc) {
309 switch (internalFormat) {
310 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
311 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
312 break;
313 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
314 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT1);
315 break;
316 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
317 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
318 break;
319 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
320 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT5);
321 break;
322 default:
323 ; /* fallthrough */
324 }
325 }
326
327 if (ctx->Extensions.S3_s3tc) {
328 switch (internalFormat) {
329 case GL_RGB_S3TC:
330 case GL_RGB4_S3TC:
331 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
332 break;
333 case GL_RGBA_S3TC:
334 case GL_RGBA4_S3TC:
335 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
336 break;
337 default:
338 ; /* fallthrough */
339 }
340 }
341 #endif
342
343 if (ctx->Extensions.ARB_texture_float) {
344 switch (internalFormat) {
345 case GL_ALPHA16F_ARB:
346 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
347 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
348 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
349 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
350 break;
351 case GL_ALPHA32F_ARB:
352 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
353 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
354 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
355 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
356 break;
357 case GL_LUMINANCE16F_ARB:
358 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
359 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
360 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
361 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
362 break;
363 case GL_LUMINANCE32F_ARB:
364 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
365 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
366 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
367 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
368 break;
369 case GL_LUMINANCE_ALPHA16F_ARB:
370 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
371 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
372 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
373 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
374 break;
375 case GL_LUMINANCE_ALPHA32F_ARB:
376 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
377 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
378 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
379 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
380 break;
381 case GL_INTENSITY16F_ARB:
382 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
383 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
384 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
385 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
386 break;
387 case GL_INTENSITY32F_ARB:
388 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
389 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
390 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
391 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
392 break;
393 case GL_RGB16F_ARB:
394 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
395 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
396 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
397 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
398 break;
399 case GL_RGB32F_ARB:
400 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
401 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
402 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
403 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
404 break;
405 case GL_RGBA16F_ARB:
406 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
407 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
408 break;
409 case GL_RGBA32F_ARB:
410 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
411 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
412 break;
413 default:
414 ; /* fallthrough */
415 }
416 }
417
418 if (ctx->Extensions.EXT_texture_shared_exponent) {
419 switch (internalFormat) {
420 case GL_RGB9_E5:
421 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
422 return MESA_FORMAT_RGB9_E5_FLOAT;
423 default:
424 ; /* fallthrough */
425 }
426 }
427
428 if (ctx->Extensions.EXT_packed_float) {
429 switch (internalFormat) {
430 case GL_R11F_G11F_B10F:
431 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
432 return MESA_FORMAT_R11_G11_B10_FLOAT;
433 default:
434 ; /* fallthrough */
435 }
436 }
437
438 if (ctx->Extensions.EXT_packed_depth_stencil) {
439 switch (internalFormat) {
440 case GL_DEPTH_STENCIL_EXT:
441 case GL_DEPTH24_STENCIL8_EXT:
442 RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
443 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
444 break;
445 default:
446 ; /* fallthrough */
447 }
448 }
449
450 if (ctx->Extensions.ARB_depth_buffer_float) {
451 switch (internalFormat) {
452 case GL_DEPTH_COMPONENT32F:
453 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
454 return MESA_FORMAT_Z32_FLOAT;
455 case GL_DEPTH32F_STENCIL8:
456 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
457 return MESA_FORMAT_Z32_FLOAT_X24S8;
458 default:
459 ; /* fallthrough */
460 }
461 }
462
463 if (ctx->Extensions.ATI_envmap_bumpmap) {
464 switch (internalFormat) {
465 case GL_DUDV_ATI:
466 case GL_DU8DV8_ATI:
467 RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
468 break;
469 default:
470 ; /* fallthrough */
471 }
472 }
473
474 if (ctx->Extensions.EXT_texture_snorm) {
475 switch (internalFormat) {
476 case GL_RED_SNORM:
477 case GL_R8_SNORM:
478 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
479 break;
480 case GL_RG_SNORM:
481 case GL_RG8_SNORM:
482 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
483 break;
484 case GL_RGB_SNORM:
485 case GL_RGB8_SNORM:
486 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
487 /* FALLTHROUGH */
488 case GL_RGBA_SNORM:
489 case GL_RGBA8_SNORM:
490 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
491 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
492 break;
493 case GL_ALPHA_SNORM:
494 case GL_ALPHA8_SNORM:
495 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
496 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
497 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
498 break;
499 case GL_LUMINANCE_SNORM:
500 case GL_LUMINANCE8_SNORM:
501 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
502 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
503 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
504 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
505 break;
506 case GL_LUMINANCE_ALPHA_SNORM:
507 case GL_LUMINANCE8_ALPHA8_SNORM:
508 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
509 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
510 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
511 break;
512 case GL_INTENSITY_SNORM:
513 case GL_INTENSITY8_SNORM:
514 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
515 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
516 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
517 break;
518 case GL_R16_SNORM:
519 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
520 break;
521 case GL_RG16_SNORM:
522 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
523 break;
524 case GL_RGB16_SNORM:
525 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
526 /* FALLTHROUGH */
527 case GL_RGBA16_SNORM:
528 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
529 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
530 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
531 break;
532 case GL_ALPHA16_SNORM:
533 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
534 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
535 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
536 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
537 break;
538 case GL_LUMINANCE16_SNORM:
539 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
540 /* FALLTHROUGH */
541 case GL_LUMINANCE16_ALPHA16_SNORM:
542 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
543 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
544 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
545 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
546 break;
547 case GL_INTENSITY16_SNORM:
548 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
549 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
550 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
551 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
552 break;
553 default:
554 ; /* fall-through */
555 }
556 }
557
558 #if FEATURE_EXT_texture_sRGB
559 if (ctx->Extensions.EXT_texture_sRGB) {
560 switch (internalFormat) {
561 case GL_SRGB_EXT:
562 case GL_SRGB8_EXT:
563 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
564 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
565 break;
566 case GL_SRGB_ALPHA_EXT:
567 case GL_SRGB8_ALPHA8_EXT:
568 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
569 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
570 break;
571 case GL_SLUMINANCE_EXT:
572 case GL_SLUMINANCE8_EXT:
573 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
574 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
575 break;
576 case GL_SLUMINANCE_ALPHA_EXT:
577 case GL_SLUMINANCE8_ALPHA8_EXT:
578 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
579 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
580 break;
581 case GL_COMPRESSED_SLUMINANCE_EXT:
582 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
583 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
584 break;
585 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
586 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
587 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
588 break;
589 case GL_COMPRESSED_SRGB_EXT:
590 #if FEATURE_texture_s3tc
591 if (ctx->Extensions.EXT_texture_compression_s3tc)
592 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
593 #endif
594 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
595 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
596 break;
597 case GL_COMPRESSED_SRGB_ALPHA_EXT:
598 #if FEATURE_texture_s3tc
599 if (ctx->Extensions.EXT_texture_compression_s3tc)
600 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
601 #endif
602 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
603 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
604 break;
605 #if FEATURE_texture_s3tc
606 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
607 if (ctx->Extensions.EXT_texture_compression_s3tc)
608 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
609 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
610 break;
611 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
612 if (ctx->Extensions.EXT_texture_compression_s3tc)
613 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT1);
614 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
615 break;
616 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
617 if (ctx->Extensions.EXT_texture_compression_s3tc)
618 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
619 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
620 break;
621 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
622 if (ctx->Extensions.EXT_texture_compression_s3tc)
623 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
624 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
625 break;
626 #endif
627 default:
628 ; /* fallthrough */
629 }
630 }
631 #endif /* FEATURE_EXT_texture_sRGB */
632
633 if (ctx->Extensions.EXT_texture_integer) {
634 switch (internalFormat) {
635 case GL_ALPHA8UI_EXT:
636 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
637 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
638 break;
639 case GL_ALPHA16UI_EXT:
640 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
641 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
642 break;
643 case GL_ALPHA32UI_EXT:
644 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
645 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
646 break;
647 case GL_ALPHA8I_EXT:
648 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
649 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
650 break;
651 case GL_ALPHA16I_EXT:
652 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
653 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
654 break;
655 case GL_ALPHA32I_EXT:
656 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
657 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
658 break;
659 case GL_LUMINANCE8UI_EXT:
660 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
661 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
662 break;
663 case GL_LUMINANCE16UI_EXT:
664 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
665 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
666 break;
667 case GL_LUMINANCE32UI_EXT:
668 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
669 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
670 break;
671 case GL_LUMINANCE8I_EXT:
672 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
673 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
674 break;
675 case GL_LUMINANCE16I_EXT:
676 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
677 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
678 break;
679 case GL_LUMINANCE32I_EXT:
680 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
681 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
682 break;
683 case GL_LUMINANCE_ALPHA8UI_EXT:
684 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
685 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
686 break;
687 case GL_LUMINANCE_ALPHA16UI_EXT:
688 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
689 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
690 break;
691 case GL_LUMINANCE_ALPHA32UI_EXT:
692 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
693 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
694 break;
695 case GL_LUMINANCE_ALPHA8I_EXT:
696 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
697 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
698 break;
699 case GL_LUMINANCE_ALPHA16I_EXT:
700 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
701 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
702 break;
703 case GL_LUMINANCE_ALPHA32I_EXT:
704 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
705 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
706 break;
707 case GL_INTENSITY8UI_EXT:
708 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
709 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
710 break;
711 case GL_INTENSITY16UI_EXT:
712 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
713 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
714 break;
715 case GL_INTENSITY32UI_EXT:
716 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
717 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
718 break;
719 case GL_INTENSITY8I_EXT:
720 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
721 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
722 break;
723 case GL_INTENSITY16I_EXT:
724 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
725 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
726 break;
727 case GL_INTENSITY32I_EXT:
728 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
729 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
730 break;
731 }
732 }
733
734 if (ctx->Version >= 30 ||
735 ctx->Extensions.EXT_texture_integer) {
736 switch (internalFormat) {
737 case GL_RGB8UI_EXT:
738 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
739 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
740 break;
741 case GL_RGB16UI_EXT:
742 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
743 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
744 break;
745 case GL_RGB32UI_EXT:
746 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
747 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
748 break;
749 case GL_RGB8I_EXT:
750 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
751 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
752 break;
753 case GL_RGB16I_EXT:
754 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
755 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
756 break;
757 case GL_RGB32I_EXT:
758 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
759 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
760 break;
761 case GL_RGBA8UI_EXT:
762 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
763 break;
764 case GL_RGBA16UI_EXT:
765 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
766 break;
767 case GL_RGBA32UI_EXT:
768 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
769 break;
770 case GL_RGBA8I_EXT:
771 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
772 break;
773 case GL_RGBA16I_EXT:
774 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
775 break;
776 case GL_RGBA32I_EXT:
777 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
778 break;
779 }
780 }
781
782 if (ctx->Extensions.ARB_texture_rg) {
783 switch (internalFormat) {
784 case GL_R8:
785 case GL_RED:
786 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
787 break;
788
789 case GL_COMPRESSED_RED:
790 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
791 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
792 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
793 break;
794
795 case GL_R16:
796 RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
797 break;
798
799 case GL_RG:
800 case GL_RG8:
801 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
802 break;
803
804 case GL_COMPRESSED_RG:
805 if (target != GL_TEXTURE_1D && target != GL_TEXTURE_1D_ARRAY)
806 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
807 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
808 break;
809
810 case GL_RG16:
811 RETURN_IF_SUPPORTED(MESA_FORMAT_RG1616);
812 break;
813
814 default:
815 ; /* fallthrough */
816 }
817 }
818
819 if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
820 switch (internalFormat) {
821 case GL_R16F:
822 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
823 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
824 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
825 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
826 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
827 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
828 break;
829 case GL_R32F:
830 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
831 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
832 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
833 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
834 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
835 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
836 break;
837 case GL_RG16F:
838 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
839 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
840 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
841 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
842 break;
843 case GL_RG32F:
844 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
845 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
846 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
847 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
848 break;
849
850 default:
851 ; /* fallthrough */
852 }
853 }
854
855 if (ctx->Version >= 30 ||
856 (ctx->Extensions.ARB_texture_rg &&
857 ctx->Extensions.EXT_texture_integer)) {
858 switch (internalFormat) {
859 case GL_R8UI:
860 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
861 break;
862 case GL_RG8UI:
863 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
864 break;
865 case GL_R16UI:
866 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
867 break;
868 case GL_RG16UI:
869 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
870 break;
871 case GL_R32UI:
872 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
873 break;
874 case GL_RG32UI:
875 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
876 break;
877 case GL_R8I:
878 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT8);
879 break;
880 case GL_RG8I:
881 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT8);
882 break;
883 case GL_R16I:
884 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT16);
885 break;
886 case GL_RG16I:
887 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT16);
888 break;
889 case GL_R32I:
890 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT32);
891 break;
892 case GL_RG32I:
893 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT32);
894 break;
895 default:
896 break;
897 }
898 }
899
900 if (ctx->Extensions.ARB_texture_rgb10_a2ui) {
901 switch (internalFormat) {
902 case GL_RGB10_A2UI:
903 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010_UINT);
904 RETURN_IF_SUPPORTED(MESA_FORMAT_ABGR2101010_UINT);
905 break;
906 default:
907 break;
908 }
909 }
910 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
911 */
912 if (_mesa_is_gles(ctx)) {
913 switch (internalFormat) {
914 case GL_BGRA:
915 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
916 break;
917
918 default:
919 ; /* fallthrough */
920 }
921 }
922
923 if (ctx->Extensions.ARB_texture_compression_rgtc) {
924 switch (internalFormat) {
925 case GL_COMPRESSED_RED_RGTC1:
926 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
927 break;
928 case GL_COMPRESSED_SIGNED_RED_RGTC1:
929 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RED_RGTC1);
930 break;
931 case GL_COMPRESSED_RG_RGTC2:
932 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
933 break;
934 case GL_COMPRESSED_SIGNED_RG_RGTC2:
935 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG_RGTC2);
936 break;
937 default:
938 ; /* fallthrough */
939 }
940 }
941
942 if (ctx->Extensions.EXT_texture_compression_latc) {
943 switch (internalFormat) {
944 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
945 RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1);
946 break;
947 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
948 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1);
949 break;
950 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
951 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
952 break;
953 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
954 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2);
955 break;
956 default:
957 ; /* fallthrough */
958 }
959 }
960
961 if (ctx->Extensions.ATI_texture_compression_3dc) {
962 switch (internalFormat) {
963 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
964 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
965 break;
966 default:
967 ; /* fallthrough */
968 }
969 }
970
971 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
972 switch (internalFormat) {
973 case GL_ETC1_RGB8_OES:
974 RETURN_IF_SUPPORTED(MESA_FORMAT_ETC1_RGB8);
975 break;
976 default:
977 ; /* fallthrough */
978 }
979 }
980
981 _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
982 _mesa_lookup_enum_by_nr(internalFormat));
983 return MESA_FORMAT_NONE;
984 }
985
986