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8b7b4ff475d70bb50a247b784f9299d864ad242c
[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 "mfeatures.h"
38 #include "mtypes.h"
39 #include "texcompress.h"
40 #include "texformat.h"
41
42 #define RETURN_IF_SUPPORTED(f) do { \
43 if (ctx->TextureFormatSupported[f]) \
44 return f; \
45 } while (0)
46
47 /**
48 * Choose an appropriate texture format given the format, type and
49 * internalFormat parameters passed to glTexImage().
50 *
51 * \param ctx the GL context.
52 * \param internalFormat user's prefered internal texture format.
53 * \param format incoming image pixel format.
54 * \param type incoming image data type.
55 *
56 * \return a pointer to a gl_texture_format object which describes the
57 * choosen texture format, or NULL on failure.
58 *
59 * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
60 * will typically override this function with a specialized version.
61 */
62 gl_format
63 _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
64 GLenum format, GLenum type )
65 {
66 (void) format;
67 (void) type;
68
69 switch (internalFormat) {
70 /* shallow RGBA formats */
71 case 4:
72 case GL_RGBA:
73 if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
74 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
75 } else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
76 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
77 }
78 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
79 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
80 break;
81
82 case GL_RGBA8:
83 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
84 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
85 break;
86 case GL_RGB5_A1:
87 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB1555);
88 break;
89 case GL_RGBA2:
90 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444_REV); /* just to test another format*/
91 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
92 break;
93 case GL_RGBA4:
94 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB4444);
95 break;
96
97 /* deep RGBA formats */
98 case GL_RGB10_A2:
99 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010);
100 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
101 break;
102 case GL_RGBA12:
103 case GL_RGBA16:
104 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
105 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
106 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
107 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
108 break;
109
110 /* shallow RGB formats */
111 case 3:
112 case GL_RGB:
113 case GL_RGB8:
114 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
115 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
116 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
117 break;
118 case GL_R3_G3_B2:
119 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB332);
120 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
121 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
122 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
123 break;
124 case GL_RGB4:
125 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565_REV); /* just to test another format */
126 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
127 break;
128 case GL_RGB5:
129 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB565);
130 break;
131
132 /* deep RGB formats */
133 case GL_RGB10:
134 case GL_RGB12:
135 case GL_RGB16:
136 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_16);
137 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
138 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
139 break;
140
141 /* Alpha formats */
142 case GL_ALPHA:
143 case GL_ALPHA4:
144 case GL_ALPHA8:
145 RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
146 break;
147
148 case GL_ALPHA12:
149 case GL_ALPHA16:
150 RETURN_IF_SUPPORTED(MESA_FORMAT_A16);
151 RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
152 break;
153
154 /* Luminance formats */
155 case 1:
156 case GL_LUMINANCE:
157 case GL_LUMINANCE4:
158 case GL_LUMINANCE8:
159 RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
160 break;
161
162 case GL_LUMINANCE12:
163 case GL_LUMINANCE16:
164 RETURN_IF_SUPPORTED(MESA_FORMAT_L16);
165 RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
166 break;
167
168 /* Luminance/Alpha formats */
169 case GL_LUMINANCE4_ALPHA4:
170 RETURN_IF_SUPPORTED(MESA_FORMAT_AL44);
171 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
172 break;
173
174 case 2:
175 case GL_LUMINANCE_ALPHA:
176 case GL_LUMINANCE6_ALPHA2:
177 case GL_LUMINANCE8_ALPHA8:
178 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
179 break;
180
181 case GL_LUMINANCE12_ALPHA4:
182 case GL_LUMINANCE12_ALPHA12:
183 case GL_LUMINANCE16_ALPHA16:
184 RETURN_IF_SUPPORTED(MESA_FORMAT_AL1616);
185 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
186 break;
187
188 case GL_INTENSITY:
189 case GL_INTENSITY4:
190 case GL_INTENSITY8:
191 RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
192 break;
193
194 case GL_INTENSITY12:
195 case GL_INTENSITY16:
196 RETURN_IF_SUPPORTED(MESA_FORMAT_I16);
197 RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
198 break;
199
200 case GL_COLOR_INDEX:
201 case GL_COLOR_INDEX1_EXT:
202 case GL_COLOR_INDEX2_EXT:
203 case GL_COLOR_INDEX4_EXT:
204 case GL_COLOR_INDEX12_EXT:
205 case GL_COLOR_INDEX16_EXT:
206 case GL_COLOR_INDEX8_EXT:
207 RETURN_IF_SUPPORTED(MESA_FORMAT_CI8);
208 break;
209
210 default:
211 ; /* fallthrough */
212 }
213
214 if (ctx->Extensions.ARB_depth_texture) {
215 switch (internalFormat) {
216 case GL_DEPTH_COMPONENT:
217 case GL_DEPTH_COMPONENT24:
218 case GL_DEPTH_COMPONENT32:
219 RETURN_IF_SUPPORTED(MESA_FORMAT_Z32);
220 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
221 break;
222 case GL_DEPTH_COMPONENT16:
223 RETURN_IF_SUPPORTED(MESA_FORMAT_Z16);
224 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
225 default:
226 ; /* fallthrough */
227 }
228 }
229
230 switch (internalFormat) {
231 case GL_COMPRESSED_ALPHA_ARB:
232 RETURN_IF_SUPPORTED(MESA_FORMAT_A8);
233 break;
234 case GL_COMPRESSED_LUMINANCE_ARB:
235 RETURN_IF_SUPPORTED(MESA_FORMAT_L8);
236 break;
237 case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
238 RETURN_IF_SUPPORTED(MESA_FORMAT_AL88);
239 break;
240 case GL_COMPRESSED_INTENSITY_ARB:
241 RETURN_IF_SUPPORTED(MESA_FORMAT_I8);
242 break;
243 case GL_COMPRESSED_RGB_ARB:
244 if (ctx->Extensions.EXT_texture_compression_s3tc ||
245 ctx->Extensions.S3_s3tc)
246 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
247 if (ctx->Extensions.TDFX_texture_compression_FXT1)
248 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
249 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB888);
250 RETURN_IF_SUPPORTED(MESA_FORMAT_XRGB8888);
251 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
252 break;
253 case GL_COMPRESSED_RGBA_ARB:
254 if (ctx->Extensions.EXT_texture_compression_s3tc ||
255 ctx->Extensions.S3_s3tc)
256 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3); /* Not rgba_dxt1, see spec */
257 if (ctx->Extensions.TDFX_texture_compression_FXT1)
258 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
259 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA8888);
260 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
261 break;
262 default:
263 ; /* fallthrough */
264 }
265
266 if (ctx->Extensions.MESA_ycbcr_texture) {
267 if (internalFormat == GL_YCBCR_MESA) {
268 if (type == GL_UNSIGNED_SHORT_8_8_MESA)
269 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
270 else
271 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
272 }
273 }
274
275 #if FEATURE_texture_fxt1
276 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
277 switch (internalFormat) {
278 case GL_COMPRESSED_RGB_FXT1_3DFX:
279 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
280 break;
281 case GL_COMPRESSED_RGBA_FXT1_3DFX:
282 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
283 break;
284 default:
285 ; /* fallthrough */
286 }
287 }
288 #endif
289
290 #if FEATURE_texture_s3tc
291 if (ctx->Extensions.EXT_texture_compression_s3tc) {
292 switch (internalFormat) {
293 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
294 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
295 break;
296 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
297 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT1);
298 break;
299 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
300 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
301 break;
302 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
303 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT5);
304 break;
305 default:
306 ; /* fallthrough */
307 }
308 }
309
310 if (ctx->Extensions.S3_s3tc) {
311 switch (internalFormat) {
312 case GL_RGB_S3TC:
313 case GL_RGB4_S3TC:
314 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
315 break;
316 case GL_RGBA_S3TC:
317 case GL_RGBA4_S3TC:
318 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
319 break;
320 default:
321 ; /* fallthrough */
322 }
323 }
324 #endif
325
326 if (ctx->Extensions.ARB_texture_float) {
327 switch (internalFormat) {
328 case GL_ALPHA16F_ARB:
329 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
330 break;
331 case GL_ALPHA32F_ARB:
332 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
333 break;
334 case GL_LUMINANCE16F_ARB:
335 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
336 break;
337 case GL_LUMINANCE32F_ARB:
338 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
339 break;
340 case GL_LUMINANCE_ALPHA16F_ARB:
341 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
342 break;
343 case GL_LUMINANCE_ALPHA32F_ARB:
344 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
345 break;
346 case GL_INTENSITY16F_ARB:
347 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
348 break;
349 case GL_INTENSITY32F_ARB:
350 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
351 break;
352 case GL_RGB16F_ARB:
353 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
354 break;
355 case GL_RGB32F_ARB:
356 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
357 break;
358 case GL_RGBA16F_ARB:
359 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
360 break;
361 case GL_RGBA32F_ARB:
362 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
363 break;
364 default:
365 ; /* fallthrough */
366 }
367 }
368
369 if (ctx->Extensions.EXT_packed_depth_stencil) {
370 switch (internalFormat) {
371 case GL_DEPTH_STENCIL_EXT:
372 case GL_DEPTH24_STENCIL8_EXT:
373 RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
374 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
375 break;
376 default:
377 ; /* fallthrough */
378 }
379 }
380
381 if (ctx->Extensions.ATI_envmap_bumpmap) {
382 switch (internalFormat) {
383 case GL_DUDV_ATI:
384 case GL_DU8DV8_ATI:
385 RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
386 break;
387 default:
388 ; /* fallthrough */
389 }
390 }
391
392 if (ctx->Extensions.EXT_texture_snorm) {
393 switch (internalFormat) {
394 case GL_RED_SNORM:
395 case GL_R8_SNORM:
396 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
397 break;
398 case GL_RG_SNORM:
399 case GL_RG8_SNORM:
400 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
401 break;
402 case GL_RGB_SNORM:
403 case GL_RGB8_SNORM:
404 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
405 break;
406 case GL_RGBA_SNORM:
407 case GL_RGBA8_SNORM:
408 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
409 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
410 break;
411 case GL_ALPHA_SNORM:
412 case GL_ALPHA8_SNORM:
413 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
414 break;
415 case GL_LUMINANCE_SNORM:
416 case GL_LUMINANCE8_SNORM:
417 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
418 break;
419 case GL_LUMINANCE_ALPHA_SNORM:
420 case GL_LUMINANCE8_ALPHA8_SNORM:
421 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
422 break;
423 case GL_INTENSITY_SNORM:
424 case GL_INTENSITY8_SNORM:
425 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
426 break;
427 case GL_R16_SNORM:
428 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
429 break;
430 case GL_RG16_SNORM:
431 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
432 break;
433 case GL_RGB16_SNORM:
434 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
435 break;
436 case GL_RGBA16_SNORM:
437 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
438 break;
439 case GL_ALPHA16_SNORM:
440 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
441 break;
442 case GL_LUMINANCE16_SNORM:
443 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
444 break;
445 case GL_LUMINANCE16_ALPHA16_SNORM:
446 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
447 break;
448 case GL_INTENSITY16_SNORM:
449 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
450 break;
451 default:
452 ; /* fall-through */
453 }
454 }
455
456 #if FEATURE_EXT_texture_sRGB
457 if (ctx->Extensions.EXT_texture_sRGB) {
458 switch (internalFormat) {
459 case GL_SRGB_EXT:
460 case GL_SRGB8_EXT:
461 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
462 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
463 break;
464 case GL_SRGB_ALPHA_EXT:
465 case GL_SRGB8_ALPHA8_EXT:
466 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
467 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
468 break;
469 case GL_SLUMINANCE_EXT:
470 case GL_SLUMINANCE8_EXT:
471 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
472 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
473 break;
474 case GL_SLUMINANCE_ALPHA_EXT:
475 case GL_SLUMINANCE8_ALPHA8_EXT:
476 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
477 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
478 break;
479 case GL_COMPRESSED_SLUMINANCE_EXT:
480 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
481 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
482 break;
483 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
484 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
485 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
486 break;
487 case GL_COMPRESSED_SRGB_EXT:
488 #if FEATURE_texture_s3tc
489 if (ctx->Extensions.EXT_texture_compression_s3tc)
490 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
491 #endif
492 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
493 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
494 break;
495 case GL_COMPRESSED_SRGB_ALPHA_EXT:
496 #if FEATURE_texture_s3tc
497 if (ctx->Extensions.EXT_texture_compression_s3tc)
498 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
499 #endif
500 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
501 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
502 break;
503 #if FEATURE_texture_s3tc
504 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
505 if (ctx->Extensions.EXT_texture_compression_s3tc)
506 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
507 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
508 break;
509 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
510 if (ctx->Extensions.EXT_texture_compression_s3tc)
511 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT1);
512 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
513 break;
514 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
515 if (ctx->Extensions.EXT_texture_compression_s3tc)
516 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
517 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
518 break;
519 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
520 if (ctx->Extensions.EXT_texture_compression_s3tc)
521 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
522 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
523 break;
524 #endif
525 default:
526 ; /* fallthrough */
527 }
528 }
529 #endif /* FEATURE_EXT_texture_sRGB */
530
531 if (ctx->Extensions.EXT_texture_integer) {
532 switch (internalFormat) {
533 case GL_RGBA32UI_EXT:
534 case GL_RGB32UI_EXT:
535 case GL_ALPHA32UI_EXT:
536 case GL_INTENSITY32UI_EXT:
537 case GL_LUMINANCE32UI_EXT:
538 case GL_LUMINANCE_ALPHA32UI_EXT:
539 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
540 break;
541 case GL_RGBA16UI_EXT:
542 case GL_RGB16UI_EXT:
543 case GL_ALPHA16UI_EXT:
544 case GL_INTENSITY16UI_EXT:
545 case GL_LUMINANCE16UI_EXT:
546 case GL_LUMINANCE_ALPHA16UI_EXT:
547 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
548 break;
549 case GL_RGBA8UI_EXT:
550 case GL_RGB8UI_EXT:
551 case GL_ALPHA8UI_EXT:
552 case GL_INTENSITY8UI_EXT:
553 case GL_LUMINANCE8UI_EXT:
554 case GL_LUMINANCE_ALPHA8UI_EXT:
555 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
556 break;
557 case GL_RGBA32I_EXT:
558 case GL_RGB32I_EXT:
559 case GL_ALPHA32I_EXT:
560 case GL_INTENSITY32I_EXT:
561 case GL_LUMINANCE32I_EXT:
562 case GL_LUMINANCE_ALPHA32I_EXT:
563 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
564 break;
565 case GL_RGBA16I_EXT:
566 case GL_RGB16I_EXT:
567 case GL_ALPHA16I_EXT:
568 case GL_INTENSITY16I_EXT:
569 case GL_LUMINANCE16I_EXT:
570 case GL_LUMINANCE_ALPHA16I_EXT:
571 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
572 break;
573 case GL_RGBA8I_EXT:
574 case GL_RGB8I_EXT:
575 case GL_ALPHA8I_EXT:
576 case GL_INTENSITY8I_EXT:
577 case GL_LUMINANCE8I_EXT:
578 case GL_LUMINANCE_ALPHA8I_EXT:
579 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
580 break;
581 }
582 }
583
584 if (ctx->Extensions.ARB_texture_rg) {
585 switch (internalFormat) {
586 case GL_R8:
587 case GL_RED:
588 case GL_COMPRESSED_RED:
589 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
590 break;
591
592 case GL_R16:
593 RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
594 break;
595
596 case GL_RG:
597 case GL_RG8:
598 case GL_COMPRESSED_RG:
599 RETURN_IF_SUPPORTED(MESA_FORMAT_RG88);
600 break;
601
602 case GL_RG16:
603 RETURN_IF_SUPPORTED(MESA_FORMAT_RG1616);
604 break;
605
606 default:
607 ; /* fallthrough */
608 }
609 }
610
611 if (ctx->Extensions.EXT_texture_format_BGRA8888) {
612 switch (internalFormat) {
613 case GL_BGRA:
614 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
615 break;
616
617 default:
618 ; /* fallthrough */
619 }
620 }
621
622 if (ctx->Extensions.ARB_texture_compression_rgtc) {
623 switch (internalFormat) {
624 case GL_COMPRESSED_RED_RGTC1:
625 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
626 break;
627 case GL_COMPRESSED_SIGNED_RED_RGTC1:
628 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RED_RGTC1);
629 break;
630 case GL_COMPRESSED_RG_RGTC2:
631 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
632 break;
633 case GL_COMPRESSED_SIGNED_RG_RGTC2:
634 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG_RGTC2);
635 break;
636 default:
637 ; /* fallthrough */
638 }
639 }
640
641 if (ctx->Extensions.EXT_texture_compression_latc) {
642 switch (internalFormat) {
643 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
644 RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1);
645 break;
646 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
647 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1);
648 break;
649 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
650 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
651 break;
652 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
653 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2);
654 break;
655 default:
656 ; /* fallthrough */
657 }
658 }
659
660 if (ctx->Extensions.ATI_texture_compression_3dc) {
661 switch (internalFormat) {
662 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
663 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
664 break;
665 default:
666 ; /* fallthrough */
667 }
668 }
669
670 _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
671 return MESA_FORMAT_NONE;
672 }
673