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mesa: add texture target field to ChooseTextureFormat() driver hook
[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 if (ctx->Extensions.EXT_texture_compression_s3tc ||
240 ctx->Extensions.S3_s3tc)
241 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
242 if (ctx->Extensions.TDFX_texture_compression_FXT1)
243 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
244 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
245 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
246 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
247 break;
248 case GL_COMPRESSED_RGBA_ARB:
249 if (ctx->Extensions.EXT_texture_compression_s3tc ||
250 ctx->Extensions.S3_s3tc)
251 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
252 if (ctx->Extensions.TDFX_texture_compression_FXT1)
253 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
254 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
255 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
256 break;
257 default:
258 ; /* fallthrough */
259 }
260
261 if (ctx->Extensions.ARB_ES2_compatibility) {
262 switch (internalFormat) {
263 case GL_RGB565:
264 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
265 break;
266 default:
267 ; /* fallthrough */
268 }
269 }
270
271 if (ctx->Extensions.MESA_ycbcr_texture) {
272 if (internalFormat == GL_YCBCR_MESA) {
273 if (type == GL_UNSIGNED_SHORT_8_8_MESA)
274 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
275 else
276 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
277 }
278 }
279
280 #if FEATURE_texture_fxt1
281 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
282 switch (internalFormat) {
283 case GL_COMPRESSED_RGB_FXT1_3DFX:
284 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
285 break;
286 case GL_COMPRESSED_RGBA_FXT1_3DFX:
287 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
288 break;
289 default:
290 ; /* fallthrough */
291 }
292 }
293 #endif
294
295 #if FEATURE_texture_s3tc
296 if (ctx->Extensions.EXT_texture_compression_s3tc) {
297 switch (internalFormat) {
298 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
299 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
300 break;
301 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
302 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT1);
303 break;
304 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
305 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
306 break;
307 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
308 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT5);
309 break;
310 default:
311 ; /* fallthrough */
312 }
313 }
314
315 if (ctx->Extensions.S3_s3tc) {
316 switch (internalFormat) {
317 case GL_RGB_S3TC:
318 case GL_RGB4_S3TC:
319 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
320 break;
321 case GL_RGBA_S3TC:
322 case GL_RGBA4_S3TC:
323 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
324 break;
325 default:
326 ; /* fallthrough */
327 }
328 }
329 #endif
330
331 if (ctx->Extensions.ARB_texture_float) {
332 switch (internalFormat) {
333 case GL_ALPHA16F_ARB:
334 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
335 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
336 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
337 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
338 break;
339 case GL_ALPHA32F_ARB:
340 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
341 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
342 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
343 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
344 break;
345 case GL_LUMINANCE16F_ARB:
346 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
347 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
348 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
349 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
350 break;
351 case GL_LUMINANCE32F_ARB:
352 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
353 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
354 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
355 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
356 break;
357 case GL_LUMINANCE_ALPHA16F_ARB:
358 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
359 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
360 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
361 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
362 break;
363 case GL_LUMINANCE_ALPHA32F_ARB:
364 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
365 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
366 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
367 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
368 break;
369 case GL_INTENSITY16F_ARB:
370 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
371 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
372 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
373 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
374 break;
375 case GL_INTENSITY32F_ARB:
376 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
377 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
378 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
379 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
380 break;
381 case GL_RGB16F_ARB:
382 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
383 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
384 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
385 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
386 break;
387 case GL_RGB32F_ARB:
388 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
389 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
390 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
391 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
392 break;
393 case GL_RGBA16F_ARB:
394 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
395 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
396 break;
397 case GL_RGBA32F_ARB:
398 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
399 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
400 break;
401 default:
402 ; /* fallthrough */
403 }
404 }
405
406 if (ctx->Extensions.EXT_texture_shared_exponent) {
407 switch (internalFormat) {
408 case GL_RGB9_E5:
409 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
410 return MESA_FORMAT_RGB9_E5_FLOAT;
411 default:
412 ; /* fallthrough */
413 }
414 }
415
416 if (ctx->Extensions.EXT_packed_float) {
417 switch (internalFormat) {
418 case GL_R11F_G11F_B10F:
419 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
420 return MESA_FORMAT_R11_G11_B10_FLOAT;
421 default:
422 ; /* fallthrough */
423 }
424 }
425
426 if (ctx->Extensions.EXT_packed_depth_stencil) {
427 switch (internalFormat) {
428 case GL_DEPTH_STENCIL_EXT:
429 case GL_DEPTH24_STENCIL8_EXT:
430 RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
431 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
432 break;
433 default:
434 ; /* fallthrough */
435 }
436 }
437
438 if (ctx->Extensions.ARB_depth_buffer_float) {
439 switch (internalFormat) {
440 case GL_DEPTH_COMPONENT32F:
441 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
442 return MESA_FORMAT_Z32_FLOAT;
443 case GL_DEPTH32F_STENCIL8:
444 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
445 return MESA_FORMAT_Z32_FLOAT_X24S8;
446 default:
447 ; /* fallthrough */
448 }
449 }
450
451 if (ctx->Extensions.ATI_envmap_bumpmap) {
452 switch (internalFormat) {
453 case GL_DUDV_ATI:
454 case GL_DU8DV8_ATI:
455 RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
456 break;
457 default:
458 ; /* fallthrough */
459 }
460 }
461
462 if (ctx->Extensions.EXT_texture_snorm) {
463 switch (internalFormat) {
464 case GL_RED_SNORM:
465 case GL_R8_SNORM:
466 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
467 break;
468 case GL_RG_SNORM:
469 case GL_RG8_SNORM:
470 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
471 break;
472 case GL_RGB_SNORM:
473 case GL_RGB8_SNORM:
474 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
475 /* FALLTHROUGH */
476 case GL_RGBA_SNORM:
477 case GL_RGBA8_SNORM:
478 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
479 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
480 break;
481 case GL_ALPHA_SNORM:
482 case GL_ALPHA8_SNORM:
483 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
484 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
485 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
486 break;
487 case GL_LUMINANCE_SNORM:
488 case GL_LUMINANCE8_SNORM:
489 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
490 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
491 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
492 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
493 break;
494 case GL_LUMINANCE_ALPHA_SNORM:
495 case GL_LUMINANCE8_ALPHA8_SNORM:
496 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
497 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
498 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
499 break;
500 case GL_INTENSITY_SNORM:
501 case GL_INTENSITY8_SNORM:
502 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
503 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
504 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
505 break;
506 case GL_R16_SNORM:
507 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
508 break;
509 case GL_RG16_SNORM:
510 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
511 break;
512 case GL_RGB16_SNORM:
513 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
514 /* FALLTHROUGH */
515 case GL_RGBA16_SNORM:
516 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
517 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
518 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
519 break;
520 case GL_ALPHA16_SNORM:
521 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
522 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
523 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
524 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
525 break;
526 case GL_LUMINANCE16_SNORM:
527 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
528 /* FALLTHROUGH */
529 case GL_LUMINANCE16_ALPHA16_SNORM:
530 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
531 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
532 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
533 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
534 break;
535 case GL_INTENSITY16_SNORM:
536 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
537 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
538 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
539 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
540 break;
541 default:
542 ; /* fall-through */
543 }
544 }
545
546 #if FEATURE_EXT_texture_sRGB
547 if (ctx->Extensions.EXT_texture_sRGB) {
548 switch (internalFormat) {
549 case GL_SRGB_EXT:
550 case GL_SRGB8_EXT:
551 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
552 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
553 break;
554 case GL_SRGB_ALPHA_EXT:
555 case GL_SRGB8_ALPHA8_EXT:
556 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
557 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
558 break;
559 case GL_SLUMINANCE_EXT:
560 case GL_SLUMINANCE8_EXT:
561 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
562 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
563 break;
564 case GL_SLUMINANCE_ALPHA_EXT:
565 case GL_SLUMINANCE8_ALPHA8_EXT:
566 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
567 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
568 break;
569 case GL_COMPRESSED_SLUMINANCE_EXT:
570 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
571 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
572 break;
573 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
574 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
575 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
576 break;
577 case GL_COMPRESSED_SRGB_EXT:
578 #if FEATURE_texture_s3tc
579 if (ctx->Extensions.EXT_texture_compression_s3tc)
580 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
581 #endif
582 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
583 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
584 break;
585 case GL_COMPRESSED_SRGB_ALPHA_EXT:
586 #if FEATURE_texture_s3tc
587 if (ctx->Extensions.EXT_texture_compression_s3tc)
588 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
589 #endif
590 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
591 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
592 break;
593 #if FEATURE_texture_s3tc
594 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
595 if (ctx->Extensions.EXT_texture_compression_s3tc)
596 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
597 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
598 break;
599 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
600 if (ctx->Extensions.EXT_texture_compression_s3tc)
601 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT1);
602 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
603 break;
604 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
605 if (ctx->Extensions.EXT_texture_compression_s3tc)
606 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
607 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
608 break;
609 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
610 if (ctx->Extensions.EXT_texture_compression_s3tc)
611 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
612 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
613 break;
614 #endif
615 default:
616 ; /* fallthrough */
617 }
618 }
619 #endif /* FEATURE_EXT_texture_sRGB */
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 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
779 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
780 break;
781
782 case GL_R16:
783 RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
784 break;
785
786 case GL_RG:
787 case GL_RG8:
788 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
789 break;
790
791 case GL_COMPRESSED_RG:
792 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
793 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
794 break;
795
796 case GL_RG16:
797 RETURN_IF_SUPPORTED(MESA_FORMAT_RG1616);
798 break;
799
800 default:
801 ; /* fallthrough */
802 }
803 }
804
805 if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
806 switch (internalFormat) {
807 case GL_R16F:
808 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
809 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
810 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
811 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
812 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
813 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
814 break;
815 case GL_R32F:
816 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
817 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
818 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
819 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
820 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
821 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
822 break;
823 case GL_RG16F:
824 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
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_RG32F:
830 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
831 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
832 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
833 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
834 break;
835
836 default:
837 ; /* fallthrough */
838 }
839 }
840
841 if (ctx->Version >= 30 ||
842 (ctx->Extensions.ARB_texture_rg &&
843 ctx->Extensions.EXT_texture_integer)) {
844 switch (internalFormat) {
845 case GL_R8UI:
846 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
847 break;
848 case GL_RG8UI:
849 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
850 break;
851 case GL_R16UI:
852 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
853 break;
854 case GL_RG16UI:
855 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
856 break;
857 case GL_R32UI:
858 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
859 break;
860 case GL_RG32UI:
861 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
862 break;
863 case GL_R8I:
864 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT8);
865 break;
866 case GL_RG8I:
867 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT8);
868 break;
869 case GL_R16I:
870 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT16);
871 break;
872 case GL_RG16I:
873 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT16);
874 break;
875 case GL_R32I:
876 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT32);
877 break;
878 case GL_RG32I:
879 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT32);
880 break;
881 default:
882 break;
883 }
884 }
885
886 if (ctx->Extensions.ARB_texture_rgb10_a2ui) {
887 switch (internalFormat) {
888 case GL_RGB10_A2UI:
889 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010_UINT);
890 RETURN_IF_SUPPORTED(MESA_FORMAT_ABGR2101010_UINT);
891 break;
892 default:
893 break;
894 }
895 }
896 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
897 */
898 if (_mesa_is_gles(ctx)) {
899 switch (internalFormat) {
900 case GL_BGRA:
901 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
902 break;
903
904 default:
905 ; /* fallthrough */
906 }
907 }
908
909 if (ctx->Extensions.ARB_texture_compression_rgtc) {
910 switch (internalFormat) {
911 case GL_COMPRESSED_RED_RGTC1:
912 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
913 break;
914 case GL_COMPRESSED_SIGNED_RED_RGTC1:
915 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RED_RGTC1);
916 break;
917 case GL_COMPRESSED_RG_RGTC2:
918 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
919 break;
920 case GL_COMPRESSED_SIGNED_RG_RGTC2:
921 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG_RGTC2);
922 break;
923 default:
924 ; /* fallthrough */
925 }
926 }
927
928 if (ctx->Extensions.EXT_texture_compression_latc) {
929 switch (internalFormat) {
930 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
931 RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1);
932 break;
933 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
934 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1);
935 break;
936 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
937 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
938 break;
939 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
940 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2);
941 break;
942 default:
943 ; /* fallthrough */
944 }
945 }
946
947 if (ctx->Extensions.ATI_texture_compression_3dc) {
948 switch (internalFormat) {
949 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
950 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
951 break;
952 default:
953 ; /* fallthrough */
954 }
955 }
956
957 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
958 switch (internalFormat) {
959 case GL_ETC1_RGB8_OES:
960 RETURN_IF_SUPPORTED(MESA_FORMAT_ETC1_RGB8);
961 break;
962 default:
963 ; /* fallthrough */
964 }
965 }
966
967 _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
968 _mesa_lookup_enum_by_nr(internalFormat));
969 return MESA_FORMAT_NONE;
970 }
971