projects / mesa.git / blob
? search:


5fdc2ab1f7957e69bdca1085b36868822c8c82e1
[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, GLint internalFormat,
65 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.MESA_ycbcr_texture) {
262 if (internalFormat == GL_YCBCR_MESA) {
263 if (type == GL_UNSIGNED_SHORT_8_8_MESA)
264 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR);
265 else
266 RETURN_IF_SUPPORTED(MESA_FORMAT_YCBCR_REV);
267 }
268 }
269
270 #if FEATURE_texture_fxt1
271 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
272 switch (internalFormat) {
273 case GL_COMPRESSED_RGB_FXT1_3DFX:
274 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FXT1);
275 break;
276 case GL_COMPRESSED_RGBA_FXT1_3DFX:
277 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FXT1);
278 break;
279 default:
280 ; /* fallthrough */
281 }
282 }
283 #endif
284
285 #if FEATURE_texture_s3tc
286 if (ctx->Extensions.EXT_texture_compression_s3tc) {
287 switch (internalFormat) {
288 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
289 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
290 break;
291 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
292 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT1);
293 break;
294 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
295 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
296 break;
297 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
298 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT5);
299 break;
300 default:
301 ; /* fallthrough */
302 }
303 }
304
305 if (ctx->Extensions.S3_s3tc) {
306 switch (internalFormat) {
307 case GL_RGB_S3TC:
308 case GL_RGB4_S3TC:
309 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_DXT1);
310 break;
311 case GL_RGBA_S3TC:
312 case GL_RGBA4_S3TC:
313 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_DXT3);
314 break;
315 default:
316 ; /* fallthrough */
317 }
318 }
319 #endif
320
321 if (ctx->Extensions.ARB_texture_float) {
322 switch (internalFormat) {
323 case GL_ALPHA16F_ARB:
324 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
325 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
326 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
327 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
328 break;
329 case GL_ALPHA32F_ARB:
330 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT32);
331 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
332 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_FLOAT16);
333 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
334 break;
335 case GL_LUMINANCE16F_ARB:
336 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
337 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
338 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
339 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
340 break;
341 case GL_LUMINANCE32F_ARB:
342 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT32);
343 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
344 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_FLOAT16);
345 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
346 break;
347 case GL_LUMINANCE_ALPHA16F_ARB:
348 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
349 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
350 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
351 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
352 break;
353 case GL_LUMINANCE_ALPHA32F_ARB:
354 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32);
355 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
356 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16);
357 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
358 break;
359 case GL_INTENSITY16F_ARB:
360 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
361 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
362 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
363 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
364 break;
365 case GL_INTENSITY32F_ARB:
366 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT32);
367 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
368 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_FLOAT16);
369 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
370 break;
371 case GL_RGB16F_ARB:
372 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
373 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
374 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
375 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
376 break;
377 case GL_RGB32F_ARB:
378 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT32);
379 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
380 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_FLOAT16);
381 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
382 break;
383 case GL_RGBA16F_ARB:
384 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
385 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
386 break;
387 case GL_RGBA32F_ARB:
388 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
389 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
390 break;
391 default:
392 ; /* fallthrough */
393 }
394 }
395
396 if (ctx->Extensions.EXT_texture_shared_exponent) {
397 switch (internalFormat) {
398 case GL_RGB9_E5:
399 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_RGB9_E5_FLOAT]);
400 return MESA_FORMAT_RGB9_E5_FLOAT;
401 default:
402 ; /* fallthrough */
403 }
404 }
405
406 if (ctx->Extensions.EXT_packed_float) {
407 switch (internalFormat) {
408 case GL_R11F_G11F_B10F:
409 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_R11_G11_B10_FLOAT]);
410 return MESA_FORMAT_R11_G11_B10_FLOAT;
411 default:
412 ; /* fallthrough */
413 }
414 }
415
416 if (ctx->Extensions.EXT_packed_depth_stencil) {
417 switch (internalFormat) {
418 case GL_DEPTH_STENCIL_EXT:
419 case GL_DEPTH24_STENCIL8_EXT:
420 RETURN_IF_SUPPORTED(MESA_FORMAT_Z24_S8);
421 RETURN_IF_SUPPORTED(MESA_FORMAT_S8_Z24);
422 break;
423 default:
424 ; /* fallthrough */
425 }
426 }
427
428 if (ctx->Extensions.ARB_depth_buffer_float) {
429 switch (internalFormat) {
430 case GL_DEPTH_COMPONENT32F:
431 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT]);
432 return MESA_FORMAT_Z32_FLOAT;
433 case GL_DEPTH32F_STENCIL8:
434 ASSERT(ctx->TextureFormatSupported[MESA_FORMAT_Z32_FLOAT_X24S8]);
435 return MESA_FORMAT_Z32_FLOAT_X24S8;
436 default:
437 ; /* fallthrough */
438 }
439 }
440
441 if (ctx->Extensions.ATI_envmap_bumpmap) {
442 switch (internalFormat) {
443 case GL_DUDV_ATI:
444 case GL_DU8DV8_ATI:
445 RETURN_IF_SUPPORTED(MESA_FORMAT_DUDV8);
446 break;
447 default:
448 ; /* fallthrough */
449 }
450 }
451
452 if (ctx->Extensions.EXT_texture_snorm) {
453 switch (internalFormat) {
454 case GL_RED_SNORM:
455 case GL_R8_SNORM:
456 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R8);
457 break;
458 case GL_RG_SNORM:
459 case GL_RG8_SNORM:
460 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG88_REV);
461 break;
462 case GL_RGB_SNORM:
463 case GL_RGB8_SNORM:
464 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
465 /* FALLTHROUGH */
466 case GL_RGBA_SNORM:
467 case GL_RGBA8_SNORM:
468 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
469 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
470 break;
471 case GL_ALPHA_SNORM:
472 case GL_ALPHA8_SNORM:
473 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A8);
474 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
475 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
476 break;
477 case GL_LUMINANCE_SNORM:
478 case GL_LUMINANCE8_SNORM:
479 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L8);
480 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBX8888);
481 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
482 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
483 break;
484 case GL_LUMINANCE_ALPHA_SNORM:
485 case GL_LUMINANCE8_ALPHA8_SNORM:
486 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL88);
487 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
488 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
489 break;
490 case GL_INTENSITY_SNORM:
491 case GL_INTENSITY8_SNORM:
492 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I8);
493 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
494 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
495 break;
496 case GL_R16_SNORM:
497 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_R16);
498 break;
499 case GL_RG16_SNORM:
500 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_GR1616);
501 break;
502 case GL_RGB16_SNORM:
503 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGB_16);
504 /* FALLTHROUGH */
505 case GL_RGBA16_SNORM:
506 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
507 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
508 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
509 break;
510 case GL_ALPHA16_SNORM:
511 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_A16);
512 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
513 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
514 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
515 break;
516 case GL_LUMINANCE16_SNORM:
517 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L16);
518 /* FALLTHROUGH */
519 case GL_LUMINANCE16_ALPHA16_SNORM:
520 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_AL1616);
521 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
522 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
523 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
524 break;
525 case GL_INTENSITY16_SNORM:
526 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_I16);
527 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA_16);
528 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888);
529 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RGBA8888_REV);
530 break;
531 default:
532 ; /* fall-through */
533 }
534 }
535
536 #if FEATURE_EXT_texture_sRGB
537 if (ctx->Extensions.EXT_texture_sRGB) {
538 switch (internalFormat) {
539 case GL_SRGB_EXT:
540 case GL_SRGB8_EXT:
541 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
542 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
543 break;
544 case GL_SRGB_ALPHA_EXT:
545 case GL_SRGB8_ALPHA8_EXT:
546 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
547 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
548 break;
549 case GL_SLUMINANCE_EXT:
550 case GL_SLUMINANCE8_EXT:
551 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
552 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
553 break;
554 case GL_SLUMINANCE_ALPHA_EXT:
555 case GL_SLUMINANCE8_ALPHA8_EXT:
556 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
557 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
558 break;
559 case GL_COMPRESSED_SLUMINANCE_EXT:
560 RETURN_IF_SUPPORTED(MESA_FORMAT_SL8);
561 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
562 break;
563 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
564 RETURN_IF_SUPPORTED(MESA_FORMAT_SLA8);
565 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
566 break;
567 case GL_COMPRESSED_SRGB_EXT:
568 #if FEATURE_texture_s3tc
569 if (ctx->Extensions.EXT_texture_compression_s3tc)
570 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
571 #endif
572 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB8);
573 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
574 break;
575 case GL_COMPRESSED_SRGB_ALPHA_EXT:
576 #if FEATURE_texture_s3tc
577 if (ctx->Extensions.EXT_texture_compression_s3tc)
578 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3); /* Not srgba_dxt1, see spec */
579 #endif
580 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA8);
581 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
582 break;
583 #if FEATURE_texture_s3tc
584 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
585 if (ctx->Extensions.EXT_texture_compression_s3tc)
586 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGB_DXT1);
587 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
588 break;
589 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
590 if (ctx->Extensions.EXT_texture_compression_s3tc)
591 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT1);
592 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
593 break;
594 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
595 if (ctx->Extensions.EXT_texture_compression_s3tc)
596 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT3);
597 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
598 break;
599 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
600 if (ctx->Extensions.EXT_texture_compression_s3tc)
601 RETURN_IF_SUPPORTED(MESA_FORMAT_SRGBA_DXT5);
602 RETURN_IF_SUPPORTED(MESA_FORMAT_SARGB8);
603 break;
604 #endif
605 default:
606 ; /* fallthrough */
607 }
608 }
609 #endif /* FEATURE_EXT_texture_sRGB */
610
611 if (ctx->Extensions.EXT_texture_integer) {
612 switch (internalFormat) {
613 case GL_ALPHA8UI_EXT:
614 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT8);
615 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
616 break;
617 case GL_ALPHA16UI_EXT:
618 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT16);
619 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
620 break;
621 case GL_ALPHA32UI_EXT:
622 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_UINT32);
623 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
624 break;
625 case GL_ALPHA8I_EXT:
626 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT8);
627 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
628 break;
629 case GL_ALPHA16I_EXT:
630 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT16);
631 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
632 break;
633 case GL_ALPHA32I_EXT:
634 RETURN_IF_SUPPORTED(MESA_FORMAT_ALPHA_INT32);
635 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
636 break;
637 case GL_LUMINANCE8UI_EXT:
638 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT8);
639 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
640 break;
641 case GL_LUMINANCE16UI_EXT:
642 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT16);
643 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
644 break;
645 case GL_LUMINANCE32UI_EXT:
646 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_UINT32);
647 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
648 break;
649 case GL_LUMINANCE8I_EXT:
650 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT8);
651 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
652 break;
653 case GL_LUMINANCE16I_EXT:
654 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT16);
655 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
656 break;
657 case GL_LUMINANCE32I_EXT:
658 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_INT32);
659 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
660 break;
661 case GL_LUMINANCE_ALPHA8UI_EXT:
662 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT8);
663 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
664 break;
665 case GL_LUMINANCE_ALPHA16UI_EXT:
666 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT16);
667 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
668 break;
669 case GL_LUMINANCE_ALPHA32UI_EXT:
670 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_UINT32);
671 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
672 break;
673 case GL_LUMINANCE_ALPHA8I_EXT:
674 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT8);
675 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
676 break;
677 case GL_LUMINANCE_ALPHA16I_EXT:
678 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT16);
679 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
680 break;
681 case GL_LUMINANCE_ALPHA32I_EXT:
682 RETURN_IF_SUPPORTED(MESA_FORMAT_LUMINANCE_ALPHA_INT32);
683 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
684 break;
685 case GL_INTENSITY8UI_EXT:
686 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT8);
687 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
688 break;
689 case GL_INTENSITY16UI_EXT:
690 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT16);
691 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
692 break;
693 case GL_INTENSITY32UI_EXT:
694 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_UINT32);
695 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
696 break;
697 case GL_INTENSITY8I_EXT:
698 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT8);
699 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
700 break;
701 case GL_INTENSITY16I_EXT:
702 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT16);
703 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
704 break;
705 case GL_INTENSITY32I_EXT:
706 RETURN_IF_SUPPORTED(MESA_FORMAT_INTENSITY_INT32);
707 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
708 break;
709 }
710 }
711
712 if (ctx->VersionMajor >= 3 ||
713 ctx->Extensions.EXT_texture_integer) {
714 switch (internalFormat) {
715 case GL_RGB8UI_EXT:
716 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT8);
717 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
718 break;
719 case GL_RGB16UI_EXT:
720 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT16);
721 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
722 break;
723 case GL_RGB32UI_EXT:
724 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_UINT32);
725 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
726 break;
727 case GL_RGB8I_EXT:
728 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT8);
729 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
730 break;
731 case GL_RGB16I_EXT:
732 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT16);
733 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
734 break;
735 case GL_RGB32I_EXT:
736 RETURN_IF_SUPPORTED(MESA_FORMAT_RGB_INT32);
737 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
738 break;
739 case GL_RGBA8UI_EXT:
740 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT8);
741 break;
742 case GL_RGBA16UI_EXT:
743 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT16);
744 break;
745 case GL_RGBA32UI_EXT:
746 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_UINT32);
747 break;
748 case GL_RGBA8I_EXT:
749 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT8);
750 break;
751 case GL_RGBA16I_EXT:
752 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT16);
753 break;
754 case GL_RGBA32I_EXT:
755 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_INT32);
756 break;
757 }
758 }
759
760 if (ctx->Extensions.ARB_texture_rg) {
761 switch (internalFormat) {
762 case GL_R8:
763 case GL_RED:
764 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
765 break;
766
767 case GL_COMPRESSED_RED:
768 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
769 RETURN_IF_SUPPORTED(MESA_FORMAT_R8);
770 break;
771
772 case GL_R16:
773 RETURN_IF_SUPPORTED(MESA_FORMAT_R16);
774 break;
775
776 case GL_RG:
777 case GL_RG8:
778 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
779 break;
780
781 case GL_COMPRESSED_RG:
782 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
783 RETURN_IF_SUPPORTED(MESA_FORMAT_GR88);
784 break;
785
786 case GL_RG16:
787 RETURN_IF_SUPPORTED(MESA_FORMAT_RG1616);
788 break;
789
790 default:
791 ; /* fallthrough */
792 }
793 }
794
795 if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
796 switch (internalFormat) {
797 case GL_R16F:
798 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
799 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
800 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
801 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
802 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
803 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
804 break;
805 case GL_R32F:
806 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT32);
807 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
808 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
809 RETURN_IF_SUPPORTED(MESA_FORMAT_R_FLOAT16);
810 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
811 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
812 break;
813 case GL_RG16F:
814 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
815 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
816 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
817 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
818 break;
819 case GL_RG32F:
820 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT32);
821 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT32);
822 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_FLOAT16);
823 RETURN_IF_SUPPORTED(MESA_FORMAT_RGBA_FLOAT16);
824 break;
825
826 default:
827 ; /* fallthrough */
828 }
829 }
830
831 if (ctx->VersionMajor >= 3 ||
832 (ctx->Extensions.ARB_texture_rg &&
833 ctx->Extensions.EXT_texture_integer)) {
834 switch (internalFormat) {
835 case GL_R8UI:
836 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT8);
837 break;
838 case GL_RG8UI:
839 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT8);
840 break;
841 case GL_R16UI:
842 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT16);
843 break;
844 case GL_RG16UI:
845 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT16);
846 break;
847 case GL_R32UI:
848 RETURN_IF_SUPPORTED(MESA_FORMAT_R_UINT32);
849 break;
850 case GL_RG32UI:
851 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_UINT32);
852 break;
853 case GL_R8I:
854 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT8);
855 break;
856 case GL_RG8I:
857 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT8);
858 break;
859 case GL_R16I:
860 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT16);
861 break;
862 case GL_RG16I:
863 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT16);
864 break;
865 case GL_R32I:
866 RETURN_IF_SUPPORTED(MESA_FORMAT_R_INT32);
867 break;
868 case GL_RG32I:
869 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_INT32);
870 break;
871 default:
872 break;
873 }
874 }
875
876 if (ctx->Extensions.ARB_texture_rgb10_a2ui) {
877 switch (internalFormat) {
878 case GL_RGB10_A2UI:
879 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB2101010_UINT);
880 break;
881 default:
882 break;
883 }
884 }
885 /* GL_BGRA can be an internal format *only* in OpenGL ES (1.x or 2.0).
886 */
887 if (ctx->API != API_OPENGL) {
888 switch (internalFormat) {
889 case GL_BGRA:
890 RETURN_IF_SUPPORTED(MESA_FORMAT_ARGB8888);
891 break;
892
893 default:
894 ; /* fallthrough */
895 }
896 }
897
898 if (ctx->Extensions.ARB_texture_compression_rgtc) {
899 switch (internalFormat) {
900 case GL_COMPRESSED_RED_RGTC1:
901 RETURN_IF_SUPPORTED(MESA_FORMAT_RED_RGTC1);
902 break;
903 case GL_COMPRESSED_SIGNED_RED_RGTC1:
904 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RED_RGTC1);
905 break;
906 case GL_COMPRESSED_RG_RGTC2:
907 RETURN_IF_SUPPORTED(MESA_FORMAT_RG_RGTC2);
908 break;
909 case GL_COMPRESSED_SIGNED_RG_RGTC2:
910 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_RG_RGTC2);
911 break;
912 default:
913 ; /* fallthrough */
914 }
915 }
916
917 if (ctx->Extensions.EXT_texture_compression_latc) {
918 switch (internalFormat) {
919 case GL_COMPRESSED_LUMINANCE_LATC1_EXT:
920 RETURN_IF_SUPPORTED(MESA_FORMAT_L_LATC1);
921 break;
922 case GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT:
923 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_L_LATC1);
924 break;
925 case GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT:
926 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
927 break;
928 case GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT:
929 RETURN_IF_SUPPORTED(MESA_FORMAT_SIGNED_LA_LATC2);
930 break;
931 default:
932 ; /* fallthrough */
933 }
934 }
935
936 if (ctx->Extensions.ATI_texture_compression_3dc) {
937 switch (internalFormat) {
938 case GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI:
939 RETURN_IF_SUPPORTED(MESA_FORMAT_LA_LATC2);
940 break;
941 default:
942 ; /* fallthrough */
943 }
944 }
945
946 if (ctx->Extensions.OES_compressed_ETC1_RGB8_texture) {
947 switch (internalFormat) {
948 case GL_ETC1_RGB8_OES:
949 RETURN_IF_SUPPORTED(MESA_FORMAT_ETC1_RGB8);
950 break;
951 default:
952 ; /* fallthrough */
953 }
954 }
955
956 _mesa_problem(ctx, "unexpected format %s in _mesa_choose_tex_format()",
957 _mesa_lookup_enum_by_nr(internalFormat));
958 return MESA_FORMAT_NONE;
959 }
960