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Merge commit 'origin/master' into gallium-0.2
[mesa.git] / src / mesa / main / texformat.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.5.1
4 *
5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
6 * Copyright (c) 2008 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 */
33
34
35 #include "colormac.h"
36 #include "context.h"
37 #include "texformat.h"
38 #include "texstore.h"
39
40
41 #if FEATURE_EXT_texture_sRGB
42
43 /**
44 * Convert an 8-bit sRGB value from non-linear space to a
45 * linear RGB value in [0, 1].
46 * Implemented with a 256-entry lookup table.
47 */
48 static INLINE GLfloat
49 nonlinear_to_linear(GLubyte cs8)
50 {
51 static GLfloat table[256];
52 static GLboolean tableReady = GL_FALSE;
53 if (!tableReady) {
54 /* compute lookup table now */
55 GLuint i;
56 for (i = 0; i < 256; i++) {
57 const GLfloat cs = UBYTE_TO_FLOAT(i);
58 if (cs <= 0.04045) {
59 table[i] = cs / 12.92f;
60 }
61 else {
62 table[i] = (GLfloat) _mesa_pow((cs + 0.055) / 1.055, 2.4);
63 }
64 }
65 tableReady = GL_TRUE;
66 }
67 return table[cs8];
68 }
69
70
71 #endif /* FEATURE_EXT_texture_sRGB */
72
73
74 /* Texel fetch routines for all supported formats
75 */
76 #define DIM 1
77 #include "texformat_tmp.h"
78
79 #define DIM 2
80 #include "texformat_tmp.h"
81
82 #define DIM 3
83 #include "texformat_tmp.h"
84
85 /**
86 * Null texel fetch function.
87 *
88 * Have to have this so the FetchTexel function pointer is never NULL.
89 */
90 static void fetch_null_texel( const struct gl_texture_image *texImage,
91 GLint i, GLint j, GLint k, GLchan *texel )
92 {
93 (void) texImage; (void) i; (void) j; (void) k;
94 texel[RCOMP] = 0;
95 texel[GCOMP] = 0;
96 texel[BCOMP] = 0;
97 texel[ACOMP] = 0;
98 _mesa_warning(NULL, "fetch_null_texel() called!");
99 }
100
101 static void fetch_null_texelf( const struct gl_texture_image *texImage,
102 GLint i, GLint j, GLint k, GLfloat *texel )
103 {
104 (void) texImage; (void) i; (void) j; (void) k;
105 texel[RCOMP] = 0.0;
106 texel[GCOMP] = 0.0;
107 texel[BCOMP] = 0.0;
108 texel[ACOMP] = 0.0;
109 _mesa_warning(NULL, "fetch_null_texelf() called!");
110 }
111
112 static void store_null_texel(struct gl_texture_image *texImage,
113 GLint i, GLint j, GLint k, const void *texel)
114 {
115 (void) texImage;
116 (void) i;
117 (void) j;
118 (void) k;
119 (void) texel;
120 /* no-op */
121 }
122
123
124 /**
125 * Notes about the predefined gl_texture_formats:
126 *
127 * 1. There are 1D, 2D and 3D functions for fetching texels from texture
128 * images, returning both GLchan values and GLfloat values. (six
129 * functions in total)
130 * You don't have to provide both the GLchan and GLfloat functions;
131 * just one or the other is OK. Mesa will use an "adaptor" to convert
132 * between GLchan/GLfloat when needed.
133 * Since the adaptors have small performance penalty, we provide both
134 * GLchan and GLfloat functions for some common formats like RGB, RGBA.
135 */
136
137
138 /***************************************************************/
139 /** \name Default GLchan-based formats */
140 /*@{*/
141
142 const struct gl_texture_format _mesa_texformat_rgba = {
143 MESA_FORMAT_RGBA, /* MesaFormat */
144 GL_RGBA, /* BaseFormat */
145 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
146 CHAN_BITS, /* RedBits */
147 CHAN_BITS, /* GreenBits */
148 CHAN_BITS, /* BlueBits */
149 CHAN_BITS, /* AlphaBits */
150 0, /* LuminanceBits */
151 0, /* IntensityBits */
152 0, /* IndexBits */
153 0, /* DepthBits */
154 0, /* StencilBits */
155 4 * sizeof(GLchan), /* TexelBytes */
156 _mesa_texstore_rgba, /* StoreTexImageFunc */
157 fetch_texel_1d_rgba, /* FetchTexel1D */
158 fetch_texel_2d_rgba, /* FetchTexel2D */
159 fetch_texel_3d_rgba, /* FetchTexel3D */
160 fetch_texel_1d_f_rgba, /* FetchTexel1Df */
161 fetch_texel_2d_f_rgba, /* FetchTexel2Df */
162 fetch_texel_3d_f_rgba, /* FetchTexel3Df */
163 store_texel_rgba /* StoreTexel */
164 };
165
166 const struct gl_texture_format _mesa_texformat_rgb = {
167 MESA_FORMAT_RGB, /* MesaFormat */
168 GL_RGB, /* BaseFormat */
169 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
170 CHAN_BITS, /* RedBits */
171 CHAN_BITS, /* GreenBits */
172 CHAN_BITS, /* BlueBits */
173 0, /* AlphaBits */
174 0, /* LuminanceBits */
175 0, /* IntensityBits */
176 0, /* IndexBits */
177 0, /* DepthBits */
178 0, /* StencilBits */
179 3 * sizeof(GLchan), /* TexelBytes */
180 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
181 fetch_texel_1d_rgb, /* FetchTexel1D */
182 fetch_texel_2d_rgb, /* FetchTexel2D */
183 fetch_texel_3d_rgb, /* FetchTexel3D */
184 fetch_texel_1d_f_rgb, /* FetchTexel1Df */
185 fetch_texel_2d_f_rgb, /* FetchTexel2Df */
186 fetch_texel_3d_f_rgb, /* FetchTexel3Df */
187 store_texel_rgb /* StoreTexel */
188 };
189
190 const struct gl_texture_format _mesa_texformat_alpha = {
191 MESA_FORMAT_ALPHA, /* MesaFormat */
192 GL_ALPHA, /* BaseFormat */
193 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
194 0, /* RedBits */
195 0, /* GreenBits */
196 0, /* BlueBits */
197 CHAN_BITS, /* AlphaBits */
198 0, /* LuminanceBits */
199 0, /* IntensityBits */
200 0, /* IndexBits */
201 0, /* DepthBits */
202 0, /* StencilBits */
203 sizeof(GLchan), /* TexelBytes */
204 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
205 fetch_texel_1d_alpha, /* FetchTexel1D */
206 fetch_texel_2d_alpha, /* FetchTexel2D */
207 fetch_texel_3d_alpha, /* FetchTexel3D */
208 NULL, /* FetchTexel1Df */
209 NULL, /* FetchTexel2Df */
210 NULL, /* FetchTexel3Df */
211 store_texel_alpha /* StoreTexel */
212 };
213
214 const struct gl_texture_format _mesa_texformat_luminance = {
215 MESA_FORMAT_LUMINANCE, /* MesaFormat */
216 GL_LUMINANCE, /* BaseFormat */
217 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
218 0, /* RedBits */
219 0, /* GreenBits */
220 0, /* BlueBits */
221 0, /* AlphaBits */
222 CHAN_BITS, /* LuminanceBits */
223 0, /* IntensityBits */
224 0, /* IndexBits */
225 0, /* DepthBits */
226 0, /* StencilBits */
227 sizeof(GLchan), /* TexelBytes */
228 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
229 fetch_texel_1d_luminance, /* FetchTexel1D */
230 fetch_texel_2d_luminance, /* FetchTexel2D */
231 fetch_texel_3d_luminance, /* FetchTexel3D */
232 NULL, /* FetchTexel1Df */
233 NULL, /* FetchTexel2Df */
234 NULL, /* FetchTexel3Df */
235 store_texel_luminance /* StoreTexel */
236 };
237
238 const struct gl_texture_format _mesa_texformat_luminance_alpha = {
239 MESA_FORMAT_LUMINANCE_ALPHA, /* MesaFormat */
240 GL_LUMINANCE_ALPHA, /* BaseFormat */
241 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
242 0, /* RedBits */
243 0, /* GreenBits */
244 0, /* BlueBits */
245 CHAN_BITS, /* AlphaBits */
246 CHAN_BITS, /* LuminanceBits */
247 0, /* IntensityBits */
248 0, /* IndexBits */
249 0, /* DepthBits */
250 0, /* StencilBits */
251 2 * sizeof(GLchan), /* TexelBytes */
252 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
253 fetch_texel_1d_luminance_alpha, /* FetchTexel1D */
254 fetch_texel_2d_luminance_alpha, /* FetchTexel2D */
255 fetch_texel_3d_luminance_alpha, /* FetchTexel3D */
256 NULL, /* FetchTexel1Df */
257 NULL, /* FetchTexel2Df */
258 NULL, /* FetchTexel3Df */
259 store_texel_luminance_alpha /* StoreTexel */
260 };
261
262 const struct gl_texture_format _mesa_texformat_intensity = {
263 MESA_FORMAT_INTENSITY, /* MesaFormat */
264 GL_INTENSITY, /* BaseFormat */
265 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
266 0, /* RedBits */
267 0, /* GreenBits */
268 0, /* BlueBits */
269 0, /* AlphaBits */
270 0, /* LuminanceBits */
271 CHAN_BITS, /* IntensityBits */
272 0, /* IndexBits */
273 0, /* DepthBits */
274 0, /* StencilBits */
275 sizeof(GLchan), /* TexelBytes */
276 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
277 fetch_texel_1d_intensity, /* FetchTexel1D */
278 fetch_texel_2d_intensity, /* FetchTexel2D */
279 fetch_texel_3d_intensity, /* FetchTexel3D */
280 NULL, /* FetchTexel1Df */
281 NULL, /* FetchTexel2Df */
282 NULL, /* FetchTexel3Df */
283 store_texel_intensity /* StoreTexel */
284 };
285
286
287 #if FEATURE_EXT_texture_sRGB
288
289 const struct gl_texture_format _mesa_texformat_srgb8 = {
290 MESA_FORMAT_SRGB8, /* MesaFormat */
291 GL_RGB, /* BaseFormat */
292 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
293 8, /* RedBits */
294 8, /* GreenBits */
295 8, /* BlueBits */
296 0, /* AlphaBits */
297 0, /* LuminanceBits */
298 0, /* IntensityBits */
299 0, /* IndexBits */
300 0, /* DepthBits */
301 0, /* StencilBits */
302 3, /* TexelBytes */
303 _mesa_texstore_srgb8, /* StoreTexImageFunc */
304 NULL, /* FetchTexel1D */
305 NULL, /* FetchTexel2D */
306 NULL, /* FetchTexel3D */
307 fetch_texel_1d_srgb8, /* FetchTexel1Df */
308 fetch_texel_2d_srgb8, /* FetchTexel2Df */
309 fetch_texel_3d_srgb8, /* FetchTexel3Df */
310 store_texel_srgb8 /* StoreTexel */
311 };
312
313 const struct gl_texture_format _mesa_texformat_srgba8 = {
314 MESA_FORMAT_SRGBA8, /* MesaFormat */
315 GL_RGBA, /* BaseFormat */
316 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
317 8, /* RedBits */
318 8, /* GreenBits */
319 8, /* BlueBits */
320 8, /* AlphaBits */
321 0, /* LuminanceBits */
322 0, /* IntensityBits */
323 0, /* IndexBits */
324 0, /* DepthBits */
325 0, /* StencilBits */
326 4, /* TexelBytes */
327 _mesa_texstore_srgba8, /* StoreTexImageFunc */
328 NULL, /* FetchTexel1D */
329 NULL, /* FetchTexel2D */
330 NULL, /* FetchTexel3D */
331 fetch_texel_1d_srgba8, /* FetchTexel1Df */
332 fetch_texel_2d_srgba8, /* FetchTexel2Df */
333 fetch_texel_3d_srgba8, /* FetchTexel3Df */
334 store_texel_srgba8 /* StoreTexel */
335 };
336
337 const struct gl_texture_format _mesa_texformat_sargb8 = {
338 MESA_FORMAT_SARGB8, /* MesaFormat */
339 GL_RGBA, /* BaseFormat */
340 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
341 8, /* RedBits */
342 8, /* GreenBits */
343 8, /* BlueBits */
344 8, /* AlphaBits */
345 0, /* LuminanceBits */
346 0, /* IntensityBits */
347 0, /* IndexBits */
348 0, /* DepthBits */
349 0, /* StencilBits */
350 4, /* TexelBytes */
351 _mesa_texstore_sargb8, /* StoreTexImageFunc */
352 NULL, /* FetchTexel1D */
353 NULL, /* FetchTexel2D */
354 NULL, /* FetchTexel3D */
355 fetch_texel_1d_sargb8, /* FetchTexel1Df */
356 fetch_texel_2d_sargb8, /* FetchTexel2Df */
357 fetch_texel_3d_sargb8, /* FetchTexel3Df */
358 store_texel_sargb8 /* StoreTexel */
359 };
360
361 const struct gl_texture_format _mesa_texformat_sl8 = {
362 MESA_FORMAT_SL8, /* MesaFormat */
363 GL_LUMINANCE, /* BaseFormat */
364 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
365 0, /* RedBits */
366 0, /* GreenBits */
367 0, /* BlueBits */
368 0, /* AlphaBits */
369 8, /* LuminanceBits */
370 0, /* IntensityBits */
371 0, /* IndexBits */
372 0, /* DepthBits */
373 0, /* StencilBits */
374 1, /* TexelBytes */
375 _mesa_texstore_sl8, /* StoreTexImageFunc */
376 NULL, /* FetchTexel1D */
377 NULL, /* FetchTexel2D */
378 NULL, /* FetchTexel3D */
379 fetch_texel_1d_sl8, /* FetchTexel1Df */
380 fetch_texel_2d_sl8, /* FetchTexel2Df */
381 fetch_texel_3d_sl8, /* FetchTexel3Df */
382 store_texel_sl8 /* StoreTexel */
383 };
384
385 const struct gl_texture_format _mesa_texformat_sla8 = {
386 MESA_FORMAT_SLA8, /* MesaFormat */
387 GL_LUMINANCE_ALPHA, /* BaseFormat */
388 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
389 0, /* RedBits */
390 0, /* GreenBits */
391 0, /* BlueBits */
392 8, /* AlphaBits */
393 8, /* LuminanceBits */
394 0, /* IntensityBits */
395 0, /* IndexBits */
396 0, /* DepthBits */
397 0, /* StencilBits */
398 2, /* TexelBytes */
399 _mesa_texstore_sla8, /* StoreTexImageFunc */
400 NULL, /* FetchTexel1D */
401 NULL, /* FetchTexel2D */
402 NULL, /* FetchTexel3D */
403 fetch_texel_1d_sla8, /* FetchTexel1Df */
404 fetch_texel_2d_sla8, /* FetchTexel2Df */
405 fetch_texel_3d_sla8, /* FetchTexel3Df */
406 store_texel_sla8 /* StoreTexel */
407 };
408
409 #endif /* FEATURE_EXT_texture_sRGB */
410
411 const struct gl_texture_format _mesa_texformat_rgba_float32 = {
412 MESA_FORMAT_RGBA_FLOAT32, /* MesaFormat */
413 GL_RGBA, /* BaseFormat */
414 GL_FLOAT, /* DataType */
415 8 * sizeof(GLfloat), /* RedBits */
416 8 * sizeof(GLfloat), /* GreenBits */
417 8 * sizeof(GLfloat), /* BlueBits */
418 8 * sizeof(GLfloat), /* AlphaBits */
419 0, /* LuminanceBits */
420 0, /* IntensityBits */
421 0, /* IndexBits */
422 0, /* DepthBits */
423 0, /* StencilBits */
424 4 * sizeof(GLfloat), /* TexelBytes */
425 _mesa_texstore_rgba_float32, /* StoreTexImageFunc */
426 NULL, /* FetchTexel1D */
427 NULL, /* FetchTexel1D */
428 NULL, /* FetchTexel1D */
429 fetch_texel_1d_f_rgba_f32, /* FetchTexel1Df */
430 fetch_texel_2d_f_rgba_f32, /* FetchTexel2Df */
431 fetch_texel_3d_f_rgba_f32, /* FetchTexel3Df */
432 store_texel_rgba_f32 /* StoreTexel */
433 };
434
435 const struct gl_texture_format _mesa_texformat_rgba_float16 = {
436 MESA_FORMAT_RGBA_FLOAT16, /* MesaFormat */
437 GL_RGBA, /* BaseFormat */
438 GL_FLOAT, /* DataType */
439 8 * sizeof(GLhalfARB), /* RedBits */
440 8 * sizeof(GLhalfARB), /* GreenBits */
441 8 * sizeof(GLhalfARB), /* BlueBits */
442 8 * sizeof(GLhalfARB), /* AlphaBits */
443 0, /* LuminanceBits */
444 0, /* IntensityBits */
445 0, /* IndexBits */
446 0, /* DepthBits */
447 0, /* StencilBits */
448 4 * sizeof(GLhalfARB), /* TexelBytes */
449 _mesa_texstore_rgba_float16, /* StoreTexImageFunc */
450 NULL, /* FetchTexel1D */
451 NULL, /* FetchTexel1D */
452 NULL, /* FetchTexel1D */
453 fetch_texel_1d_f_rgba_f16, /* FetchTexel1Df */
454 fetch_texel_2d_f_rgba_f16, /* FetchTexel2Df */
455 fetch_texel_3d_f_rgba_f16, /* FetchTexel3Df */
456 store_texel_rgba_f16 /* StoreTexel */
457 };
458
459 const struct gl_texture_format _mesa_texformat_rgb_float32 = {
460 MESA_FORMAT_RGB_FLOAT32, /* MesaFormat */
461 GL_RGB, /* BaseFormat */
462 GL_FLOAT, /* DataType */
463 8 * sizeof(GLfloat), /* RedBits */
464 8 * sizeof(GLfloat), /* GreenBits */
465 8 * sizeof(GLfloat), /* BlueBits */
466 0, /* AlphaBits */
467 0, /* LuminanceBits */
468 0, /* IntensityBits */
469 0, /* IndexBits */
470 0, /* DepthBits */
471 0, /* StencilBits */
472 3 * sizeof(GLfloat), /* TexelBytes */
473 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
474 NULL, /* FetchTexel1D */
475 NULL, /* FetchTexel1D */
476 NULL, /* FetchTexel1D */
477 fetch_texel_1d_f_rgb_f32, /* FetchTexel1Df */
478 fetch_texel_2d_f_rgb_f32, /* FetchTexel2Df */
479 fetch_texel_3d_f_rgb_f32, /* FetchTexel3Df */
480 store_texel_rgb_f32 /* StoreTexel */
481 };
482
483 const struct gl_texture_format _mesa_texformat_rgb_float16 = {
484 MESA_FORMAT_RGB_FLOAT16, /* MesaFormat */
485 GL_RGB, /* BaseFormat */
486 GL_FLOAT, /* DataType */
487 8 * sizeof(GLhalfARB), /* RedBits */
488 8 * sizeof(GLhalfARB), /* GreenBits */
489 8 * sizeof(GLhalfARB), /* BlueBits */
490 0, /* AlphaBits */
491 0, /* LuminanceBits */
492 0, /* IntensityBits */
493 0, /* IndexBits */
494 0, /* DepthBits */
495 0, /* StencilBits */
496 3 * sizeof(GLhalfARB), /* TexelBytes */
497 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
498 NULL, /* FetchTexel1D */
499 NULL, /* FetchTexel1D */
500 NULL, /* FetchTexel1D */
501 fetch_texel_1d_f_rgb_f16, /* FetchTexel1Df */
502 fetch_texel_2d_f_rgb_f16, /* FetchTexel2Df */
503 fetch_texel_3d_f_rgb_f16, /* FetchTexel3Df */
504 store_texel_rgb_f16 /* StoreTexel */
505 };
506
507 const struct gl_texture_format _mesa_texformat_alpha_float32 = {
508 MESA_FORMAT_ALPHA_FLOAT32, /* MesaFormat */
509 GL_ALPHA, /* BaseFormat */
510 GL_FLOAT, /* DataType */
511 0, /* RedBits */
512 0, /* GreenBits */
513 0, /* BlueBits */
514 8 * sizeof(GLfloat), /* AlphaBits */
515 0, /* LuminanceBits */
516 0, /* IntensityBits */
517 0, /* IndexBits */
518 0, /* DepthBits */
519 0, /* StencilBits */
520 1 * sizeof(GLfloat), /* TexelBytes */
521 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
522 NULL, /* FetchTexel1D */
523 NULL, /* FetchTexel1D */
524 NULL, /* FetchTexel1D */
525 fetch_texel_1d_f_alpha_f32, /* FetchTexel1Df */
526 fetch_texel_2d_f_alpha_f32, /* FetchTexel2Df */
527 fetch_texel_3d_f_alpha_f32, /* FetchTexel3Df */
528 store_texel_alpha_f32 /* StoreTexel */
529 };
530
531 const struct gl_texture_format _mesa_texformat_alpha_float16 = {
532 MESA_FORMAT_ALPHA_FLOAT16, /* MesaFormat */
533 GL_ALPHA, /* BaseFormat */
534 GL_FLOAT, /* DataType */
535 0, /* RedBits */
536 0, /* GreenBits */
537 0, /* BlueBits */
538 8 * sizeof(GLhalfARB), /* AlphaBits */
539 0, /* LuminanceBits */
540 0, /* IntensityBits */
541 0, /* IndexBits */
542 0, /* DepthBits */
543 0, /* StencilBits */
544 1 * sizeof(GLhalfARB), /* TexelBytes */
545 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
546 NULL, /* FetchTexel1D */
547 NULL, /* FetchTexel1D */
548 NULL, /* FetchTexel1D */
549 fetch_texel_1d_f_alpha_f16, /* FetchTexel1Df */
550 fetch_texel_2d_f_alpha_f16, /* FetchTexel2Df */
551 fetch_texel_3d_f_alpha_f16, /* FetchTexel3Df */
552 store_texel_alpha_f16 /* StoreTexel */
553 };
554
555 const struct gl_texture_format _mesa_texformat_luminance_float32 = {
556 MESA_FORMAT_LUMINANCE_FLOAT32, /* MesaFormat */
557 GL_LUMINANCE, /* BaseFormat */
558 GL_FLOAT, /* DataType */
559 0, /* RedBits */
560 0, /* GreenBits */
561 0, /* BlueBits */
562 0, /* AlphaBits */
563 8 * sizeof(GLfloat), /* LuminanceBits */
564 0, /* IntensityBits */
565 0, /* IndexBits */
566 0, /* DepthBits */
567 0, /* StencilBits */
568 1 * sizeof(GLfloat), /* TexelBytes */
569 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
570 NULL, /* FetchTexel1D */
571 NULL, /* FetchTexel2D */
572 NULL, /* FetchTexel3D */
573 fetch_texel_1d_f_luminance_f32, /* FetchTexel1Df */
574 fetch_texel_2d_f_luminance_f32, /* FetchTexel2Df */
575 fetch_texel_3d_f_luminance_f32, /* FetchTexel3Df */
576 store_texel_luminance_f32 /* StoreTexel */
577 };
578
579 const struct gl_texture_format _mesa_texformat_luminance_float16 = {
580 MESA_FORMAT_LUMINANCE_FLOAT16, /* MesaFormat */
581 GL_LUMINANCE, /* BaseFormat */
582 GL_FLOAT, /* DataType */
583 0, /* RedBits */
584 0, /* GreenBits */
585 0, /* BlueBits */
586 0, /* AlphaBits */
587 8 * sizeof(GLhalfARB), /* LuminanceBits */
588 0, /* IntensityBits */
589 0, /* IndexBits */
590 0, /* DepthBits */
591 0, /* StencilBits */
592 1 * sizeof(GLhalfARB), /* TexelBytes */
593 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
594 NULL, /* FetchTexel1D */
595 NULL, /* FetchTexel2D */
596 NULL, /* FetchTexel3D */
597 fetch_texel_1d_f_luminance_f16, /* FetchTexel1Df */
598 fetch_texel_2d_f_luminance_f16, /* FetchTexel2Df */
599 fetch_texel_3d_f_luminance_f16, /* FetchTexel3Df */
600 store_texel_luminance_f16 /* StoreTexel */
601 };
602
603 const struct gl_texture_format _mesa_texformat_luminance_alpha_float32 = {
604 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, /* MesaFormat */
605 GL_LUMINANCE_ALPHA, /* BaseFormat */
606 GL_FLOAT, /* DataType */
607 0, /* RedBits */
608 0, /* GreenBits */
609 0, /* BlueBits */
610 8 * sizeof(GLfloat), /* AlphaBits */
611 8 * sizeof(GLfloat), /* LuminanceBits */
612 0, /* IntensityBits */
613 0, /* IndexBits */
614 0, /* DepthBits */
615 0, /* StencilBits */
616 2 * sizeof(GLfloat), /* TexelBytes */
617 _mesa_texstore_rgba_float32, /* StoreTexImageFunc */
618 NULL, /* FetchTexel1D */
619 NULL, /* FetchTexel2D */
620 NULL, /* FetchTexel3D */
621 fetch_texel_1d_f_luminance_alpha_f32,/* FetchTexel1Df */
622 fetch_texel_2d_f_luminance_alpha_f32,/* FetchTexel2Df */
623 fetch_texel_3d_f_luminance_alpha_f32,/* FetchTexel3Df */
624 store_texel_luminance_alpha_f32 /* StoreTexel */
625 };
626
627 const struct gl_texture_format _mesa_texformat_luminance_alpha_float16 = {
628 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, /* MesaFormat */
629 GL_LUMINANCE_ALPHA, /* BaseFormat */
630 GL_FLOAT, /* DataType */
631 0, /* RedBits */
632 0, /* GreenBits */
633 0, /* BlueBits */
634 8 * sizeof(GLhalfARB), /* AlphaBits */
635 8 * sizeof(GLhalfARB), /* LuminanceBits */
636 0, /* IntensityBits */
637 0, /* IndexBits */
638 0, /* DepthBits */
639 0, /* StencilBits */
640 2 * sizeof(GLhalfARB), /* TexelBytes */
641 _mesa_texstore_rgba_float16, /* StoreTexImageFunc */
642 NULL, /* FetchTexel1D */
643 NULL, /* FetchTexel2D */
644 NULL, /* FetchTexel3D */
645 fetch_texel_1d_f_luminance_alpha_f16,/* FetchTexel1Df */
646 fetch_texel_2d_f_luminance_alpha_f16,/* FetchTexel2Df */
647 fetch_texel_3d_f_luminance_alpha_f16,/* FetchTexel3Df */
648 store_texel_luminance_alpha_f16 /* StoreTexel */
649 };
650
651 const struct gl_texture_format _mesa_texformat_intensity_float32 = {
652 MESA_FORMAT_INTENSITY_FLOAT32, /* MesaFormat */
653 GL_INTENSITY, /* BaseFormat */
654 GL_FLOAT, /* DataType */
655 0, /* RedBits */
656 0, /* GreenBits */
657 0, /* BlueBits */
658 0, /* AlphaBits */
659 0, /* LuminanceBits */
660 8 * sizeof(GLfloat), /* IntensityBits */
661 0, /* IndexBits */
662 0, /* DepthBits */
663 0, /* StencilBits */
664 1 * sizeof(GLfloat), /* TexelBytes */
665 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
666 NULL, /* FetchTexel1D */
667 NULL, /* FetchTexel2D */
668 NULL, /* FetchTexel3D */
669 fetch_texel_1d_f_intensity_f32, /* FetchTexel1Df */
670 fetch_texel_2d_f_intensity_f32, /* FetchTexel2Df */
671 fetch_texel_3d_f_intensity_f32, /* FetchTexel3Df */
672 store_texel_intensity_f32 /* StoreTexel */
673 };
674
675 const struct gl_texture_format _mesa_texformat_intensity_float16 = {
676 MESA_FORMAT_INTENSITY_FLOAT16, /* MesaFormat */
677 GL_INTENSITY, /* BaseFormat */
678 GL_FLOAT, /* DataType */
679 0, /* RedBits */
680 0, /* GreenBits */
681 0, /* BlueBits */
682 0, /* AlphaBits */
683 0, /* LuminanceBits */
684 8 * sizeof(GLhalfARB), /* IntensityBits */
685 0, /* IndexBits */
686 0, /* DepthBits */
687 0, /* StencilBits */
688 1 * sizeof(GLhalfARB), /* TexelBytes */
689 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
690 NULL, /* FetchTexel1D */
691 NULL, /* FetchTexel2D */
692 NULL, /* FetchTexel3D */
693 fetch_texel_1d_f_intensity_f16, /* FetchTexel1Df */
694 fetch_texel_2d_f_intensity_f16, /* FetchTexel2Df */
695 fetch_texel_3d_f_intensity_f16, /* FetchTexel3Df */
696 store_texel_intensity_f16 /* StoreTexel */
697 };
698
699
700 /*@}*/
701
702
703 /***************************************************************/
704 /** \name Hardware formats */
705 /*@{*/
706
707 const struct gl_texture_format _mesa_texformat_rgba8888 = {
708 MESA_FORMAT_RGBA8888, /* MesaFormat */
709 GL_RGBA, /* BaseFormat */
710 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
711 8, /* RedBits */
712 8, /* GreenBits */
713 8, /* BlueBits */
714 8, /* AlphaBits */
715 0, /* LuminanceBits */
716 0, /* IntensityBits */
717 0, /* IndexBits */
718 0, /* DepthBits */
719 0, /* StencilBits */
720 4, /* TexelBytes */
721 _mesa_texstore_rgba8888, /* StoreTexImageFunc */
722 fetch_texel_1d_rgba8888, /* FetchTexel1D */
723 fetch_texel_2d_rgba8888, /* FetchTexel2D */
724 fetch_texel_3d_rgba8888, /* FetchTexel3D */
725 NULL, /* FetchTexel1Df */
726 NULL, /* FetchTexel2Df */
727 NULL, /* FetchTexel3Df */
728 store_texel_rgba8888 /* StoreTexel */
729 };
730
731 const struct gl_texture_format _mesa_texformat_rgba8888_rev = {
732 MESA_FORMAT_RGBA8888_REV, /* MesaFormat */
733 GL_RGBA, /* BaseFormat */
734 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
735 8, /* RedBits */
736 8, /* GreenBits */
737 8, /* BlueBits */
738 8, /* AlphaBits */
739 0, /* LuminanceBits */
740 0, /* IntensityBits */
741 0, /* IndexBits */
742 0, /* DepthBits */
743 0, /* StencilBits */
744 4, /* TexelBytes */
745 _mesa_texstore_rgba8888, /* StoreTexImageFunc */
746 fetch_texel_1d_rgba8888_rev, /* FetchTexel1D */
747 fetch_texel_2d_rgba8888_rev, /* FetchTexel2D */
748 fetch_texel_3d_rgba8888_rev, /* FetchTexel3D */
749 NULL, /* FetchTexel1Df */
750 NULL, /* FetchTexel2Df */
751 NULL, /* FetchTexel3Df */
752 store_texel_rgba8888_rev /* StoreTexel */
753 };
754
755 const struct gl_texture_format _mesa_texformat_argb8888 = {
756 MESA_FORMAT_ARGB8888, /* MesaFormat */
757 GL_RGBA, /* BaseFormat */
758 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
759 8, /* RedBits */
760 8, /* GreenBits */
761 8, /* BlueBits */
762 8, /* AlphaBits */
763 0, /* LuminanceBits */
764 0, /* IntensityBits */
765 0, /* IndexBits */
766 0, /* DepthBits */
767 0, /* StencilBits */
768 4, /* TexelBytes */
769 _mesa_texstore_argb8888, /* StoreTexImageFunc */
770 fetch_texel_1d_argb8888, /* FetchTexel1D */
771 fetch_texel_2d_argb8888, /* FetchTexel2D */
772 fetch_texel_3d_argb8888, /* FetchTexel3D */
773 NULL, /* FetchTexel1Df */
774 NULL, /* FetchTexel2Df */
775 NULL, /* FetchTexel3Df */
776 store_texel_argb8888 /* StoreTexel */
777 };
778
779 const struct gl_texture_format _mesa_texformat_argb8888_rev = {
780 MESA_FORMAT_ARGB8888_REV, /* MesaFormat */
781 GL_RGBA, /* BaseFormat */
782 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
783 8, /* RedBits */
784 8, /* GreenBits */
785 8, /* BlueBits */
786 8, /* AlphaBits */
787 0, /* LuminanceBits */
788 0, /* IntensityBits */
789 0, /* IndexBits */
790 0, /* DepthBits */
791 0, /* StencilBits */
792 4, /* TexelBytes */
793 _mesa_texstore_argb8888, /* StoreTexImageFunc */
794 fetch_texel_1d_argb8888_rev, /* FetchTexel1D */
795 fetch_texel_2d_argb8888_rev, /* FetchTexel2D */
796 fetch_texel_3d_argb8888_rev, /* FetchTexel3D */
797 NULL, /* FetchTexel1Df */
798 NULL, /* FetchTexel2Df */
799 NULL, /* FetchTexel3Df */
800 store_texel_argb8888_rev /* StoreTexel */
801 };
802
803 const struct gl_texture_format _mesa_texformat_rgb888 = {
804 MESA_FORMAT_RGB888, /* MesaFormat */
805 GL_RGB, /* BaseFormat */
806 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
807 8, /* RedBits */
808 8, /* GreenBits */
809 8, /* BlueBits */
810 0, /* AlphaBits */
811 0, /* LuminanceBits */
812 0, /* IntensityBits */
813 0, /* IndexBits */
814 0, /* DepthBits */
815 0, /* StencilBits */
816 3, /* TexelBytes */
817 _mesa_texstore_rgb888, /* StoreTexImageFunc */
818 fetch_texel_1d_rgb888, /* FetchTexel1D */
819 fetch_texel_2d_rgb888, /* FetchTexel2D */
820 fetch_texel_3d_rgb888, /* FetchTexel3D */
821 NULL, /* FetchTexel1Df */
822 NULL, /* FetchTexel2Df */
823 NULL, /* FetchTexel3Df */
824 store_texel_rgb888 /* StoreTexel */
825 };
826
827 const struct gl_texture_format _mesa_texformat_bgr888 = {
828 MESA_FORMAT_BGR888, /* MesaFormat */
829 GL_RGB, /* BaseFormat */
830 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
831 8, /* RedBits */
832 8, /* GreenBits */
833 8, /* BlueBits */
834 0, /* AlphaBits */
835 0, /* LuminanceBits */
836 0, /* IntensityBits */
837 0, /* IndexBits */
838 0, /* DepthBits */
839 0, /* StencilBits */
840 3, /* TexelBytes */
841 _mesa_texstore_bgr888, /* StoreTexImageFunc */
842 fetch_texel_1d_bgr888, /* FetchTexel1D */
843 fetch_texel_2d_bgr888, /* FetchTexel2D */
844 fetch_texel_3d_bgr888, /* FetchTexel3D */
845 NULL, /* FetchTexel1Df */
846 NULL, /* FetchTexel2Df */
847 NULL, /* FetchTexel3Df */
848 store_texel_bgr888 /* StoreTexel */
849 };
850
851 const struct gl_texture_format _mesa_texformat_rgb565 = {
852 MESA_FORMAT_RGB565, /* MesaFormat */
853 GL_RGB, /* BaseFormat */
854 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
855 5, /* RedBits */
856 6, /* GreenBits */
857 5, /* BlueBits */
858 0, /* AlphaBits */
859 0, /* LuminanceBits */
860 0, /* IntensityBits */
861 0, /* IndexBits */
862 0, /* DepthBits */
863 0, /* StencilBits */
864 2, /* TexelBytes */
865 _mesa_texstore_rgb565, /* StoreTexImageFunc */
866 fetch_texel_1d_rgb565, /* FetchTexel1D */
867 fetch_texel_2d_rgb565, /* FetchTexel2D */
868 fetch_texel_3d_rgb565, /* FetchTexel3D */
869 NULL, /* FetchTexel1Df */
870 NULL, /* FetchTexel2Df */
871 NULL, /* FetchTexel3Df */
872 store_texel_rgb565 /* StoreTexel */
873 };
874
875 const struct gl_texture_format _mesa_texformat_rgb565_rev = {
876 MESA_FORMAT_RGB565_REV, /* MesaFormat */
877 GL_RGB, /* BaseFormat */
878 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
879 5, /* RedBits */
880 6, /* GreenBits */
881 5, /* BlueBits */
882 0, /* AlphaBits */
883 0, /* LuminanceBits */
884 0, /* IntensityBits */
885 0, /* IndexBits */
886 0, /* DepthBits */
887 0, /* StencilBits */
888 2, /* TexelBytes */
889 _mesa_texstore_rgb565, /* StoreTexImageFunc */
890 fetch_texel_1d_rgb565_rev, /* FetchTexel1D */
891 fetch_texel_2d_rgb565_rev, /* FetchTexel2D */
892 fetch_texel_3d_rgb565_rev, /* FetchTexel3D */
893 NULL, /* FetchTexel1Df */
894 NULL, /* FetchTexel2Df */
895 NULL, /* FetchTexel3Df */
896 store_texel_rgb565_rev /* StoreTexel */
897 };
898
899 const struct gl_texture_format _mesa_texformat_argb4444 = {
900 MESA_FORMAT_ARGB4444, /* MesaFormat */
901 GL_RGBA, /* BaseFormat */
902 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
903 4, /* RedBits */
904 4, /* GreenBits */
905 4, /* BlueBits */
906 4, /* AlphaBits */
907 0, /* LuminanceBits */
908 0, /* IntensityBits */
909 0, /* IndexBits */
910 0, /* DepthBits */
911 0, /* StencilBits */
912 2, /* TexelBytes */
913 _mesa_texstore_argb4444, /* StoreTexImageFunc */
914 fetch_texel_1d_argb4444, /* FetchTexel1D */
915 fetch_texel_2d_argb4444, /* FetchTexel2D */
916 fetch_texel_3d_argb4444, /* FetchTexel3D */
917 NULL, /* FetchTexel1Df */
918 NULL, /* FetchTexel2Df */
919 NULL, /* FetchTexel3Df */
920 store_texel_argb4444 /* StoreTexel */
921 };
922
923 const struct gl_texture_format _mesa_texformat_argb4444_rev = {
924 MESA_FORMAT_ARGB4444_REV, /* MesaFormat */
925 GL_RGBA, /* BaseFormat */
926 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
927 4, /* RedBits */
928 4, /* GreenBits */
929 4, /* BlueBits */
930 4, /* AlphaBits */
931 0, /* LuminanceBits */
932 0, /* IntensityBits */
933 0, /* IndexBits */
934 0, /* DepthBits */
935 0, /* StencilBits */
936 2, /* TexelBytes */
937 _mesa_texstore_argb4444, /* StoreTexImageFunc */
938 fetch_texel_1d_argb4444_rev, /* FetchTexel1D */
939 fetch_texel_2d_argb4444_rev, /* FetchTexel2D */
940 fetch_texel_3d_argb4444_rev, /* FetchTexel3D */
941 NULL, /* FetchTexel1Df */
942 NULL, /* FetchTexel2Df */
943 NULL, /* FetchTexel3Df */
944 store_texel_argb4444_rev /* StoreTexel */
945 };
946
947 const struct gl_texture_format _mesa_texformat_argb1555 = {
948 MESA_FORMAT_ARGB1555, /* MesaFormat */
949 GL_RGBA, /* BaseFormat */
950 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
951 5, /* RedBits */
952 5, /* GreenBits */
953 5, /* BlueBits */
954 1, /* AlphaBits */
955 0, /* LuminanceBits */
956 0, /* IntensityBits */
957 0, /* IndexBits */
958 0, /* DepthBits */
959 0, /* StencilBits */
960 2, /* TexelBytes */
961 _mesa_texstore_argb1555, /* StoreTexImageFunc */
962 fetch_texel_1d_argb1555, /* FetchTexel1D */
963 fetch_texel_2d_argb1555, /* FetchTexel2D */
964 fetch_texel_3d_argb1555, /* FetchTexel3D */
965 NULL, /* FetchTexel1Df */
966 NULL, /* FetchTexel2Df */
967 NULL, /* FetchTexel3Df */
968 store_texel_argb1555 /* StoreTexel */
969 };
970
971 const struct gl_texture_format _mesa_texformat_argb1555_rev = {
972 MESA_FORMAT_ARGB1555_REV, /* MesaFormat */
973 GL_RGBA, /* BaseFormat */
974 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
975 5, /* RedBits */
976 5, /* GreenBits */
977 5, /* BlueBits */
978 1, /* AlphaBits */
979 0, /* LuminanceBits */
980 0, /* IntensityBits */
981 0, /* IndexBits */
982 0, /* DepthBits */
983 0, /* StencilBits */
984 2, /* TexelBytes */
985 _mesa_texstore_argb1555, /* StoreTexImageFunc */
986 fetch_texel_1d_argb1555_rev, /* FetchTexel1D */
987 fetch_texel_2d_argb1555_rev, /* FetchTexel2D */
988 fetch_texel_3d_argb1555_rev, /* FetchTexel3D */
989 NULL, /* FetchTexel1Df */
990 NULL, /* FetchTexel2Df */
991 NULL, /* FetchTexel3Df */
992 store_texel_argb1555_rev /* StoreTexel */
993 };
994
995 const struct gl_texture_format _mesa_texformat_al88 = {
996 MESA_FORMAT_AL88, /* MesaFormat */
997 GL_LUMINANCE_ALPHA, /* BaseFormat */
998 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
999 0, /* RedBits */
1000 0, /* GreenBits */
1001 0, /* BlueBits */
1002 8, /* AlphaBits */
1003 8, /* LuminanceBits */
1004 0, /* IntensityBits */
1005 0, /* IndexBits */
1006 0, /* DepthBits */
1007 0, /* StencilBits */
1008 2, /* TexelBytes */
1009 _mesa_texstore_al88, /* StoreTexImageFunc */
1010 fetch_texel_1d_al88, /* FetchTexel1D */
1011 fetch_texel_2d_al88, /* FetchTexel2D */
1012 fetch_texel_3d_al88, /* FetchTexel3D */
1013 NULL, /* FetchTexel1Df */
1014 NULL, /* FetchTexel2Df */
1015 NULL, /* FetchTexel3Df */
1016 store_texel_al88 /* StoreTexel */
1017 };
1018
1019 const struct gl_texture_format _mesa_texformat_al88_rev = {
1020 MESA_FORMAT_AL88_REV, /* MesaFormat */
1021 GL_LUMINANCE_ALPHA, /* BaseFormat */
1022 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1023 0, /* RedBits */
1024 0, /* GreenBits */
1025 0, /* BlueBits */
1026 8, /* AlphaBits */
1027 8, /* LuminanceBits */
1028 0, /* IntensityBits */
1029 0, /* IndexBits */
1030 0, /* DepthBits */
1031 0, /* StencilBits */
1032 2, /* TexelBytes */
1033 _mesa_texstore_al88, /* StoreTexImageFunc */
1034 fetch_texel_1d_al88_rev, /* FetchTexel1D */
1035 fetch_texel_2d_al88_rev, /* FetchTexel2D */
1036 fetch_texel_3d_al88_rev, /* FetchTexel3D */
1037 NULL, /* FetchTexel1Df */
1038 NULL, /* FetchTexel2Df */
1039 NULL, /* FetchTexel3Df */
1040 store_texel_al88_rev /* StoreTexel */
1041 };
1042
1043 const struct gl_texture_format _mesa_texformat_rgb332 = {
1044 MESA_FORMAT_RGB332, /* MesaFormat */
1045 GL_RGB, /* BaseFormat */
1046 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1047 3, /* RedBits */
1048 3, /* GreenBits */
1049 2, /* BlueBits */
1050 0, /* AlphaBits */
1051 0, /* LuminanceBits */
1052 0, /* IntensityBits */
1053 0, /* IndexBits */
1054 0, /* DepthBits */
1055 0, /* StencilBits */
1056 1, /* TexelBytes */
1057 _mesa_texstore_rgb332, /* StoreTexImageFunc */
1058 fetch_texel_1d_rgb332, /* FetchTexel1D */
1059 fetch_texel_2d_rgb332, /* FetchTexel2D */
1060 fetch_texel_3d_rgb332, /* FetchTexel3D */
1061 NULL, /* FetchTexel1Df */
1062 NULL, /* FetchTexel2Df */
1063 NULL, /* FetchTexel3Df */
1064 store_texel_rgb332 /* StoreTexel */
1065 };
1066
1067 const struct gl_texture_format _mesa_texformat_a8 = {
1068 MESA_FORMAT_A8, /* MesaFormat */
1069 GL_ALPHA, /* BaseFormat */
1070 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1071 0, /* RedBits */
1072 0, /* GreenBits */
1073 0, /* BlueBits */
1074 8, /* AlphaBits */
1075 0, /* LuminanceBits */
1076 0, /* IntensityBits */
1077 0, /* IndexBits */
1078 0, /* DepthBits */
1079 0, /* StencilBits */
1080 1, /* TexelBytes */
1081 _mesa_texstore_a8, /* StoreTexImageFunc */
1082 fetch_texel_1d_a8, /* FetchTexel1D */
1083 fetch_texel_2d_a8, /* FetchTexel2D */
1084 fetch_texel_3d_a8, /* FetchTexel3D */
1085 NULL, /* FetchTexel1Df */
1086 NULL, /* FetchTexel2Df */
1087 NULL, /* FetchTexel3Df */
1088 store_texel_a8 /* StoreTexel */
1089 };
1090
1091 const struct gl_texture_format _mesa_texformat_l8 = {
1092 MESA_FORMAT_L8, /* MesaFormat */
1093 GL_LUMINANCE, /* BaseFormat */
1094 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1095 0, /* RedBits */
1096 0, /* GreenBits */
1097 0, /* BlueBits */
1098 0, /* AlphaBits */
1099 8, /* LuminanceBits */
1100 0, /* IntensityBits */
1101 0, /* IndexBits */
1102 0, /* DepthBits */
1103 0, /* StencilBits */
1104 1, /* TexelBytes */
1105 _mesa_texstore_a8,/*yes*/ /* StoreTexImageFunc */
1106 fetch_texel_1d_l8, /* FetchTexel1D */
1107 fetch_texel_2d_l8, /* FetchTexel2D */
1108 fetch_texel_3d_l8, /* FetchTexel3D */
1109 NULL, /* FetchTexel1Df */
1110 NULL, /* FetchTexel2Df */
1111 NULL, /* FetchTexel3Df */
1112 store_texel_l8 /* StoreTexel */
1113 };
1114
1115 const struct gl_texture_format _mesa_texformat_i8 = {
1116 MESA_FORMAT_I8, /* MesaFormat */
1117 GL_INTENSITY, /* BaseFormat */
1118 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1119 0, /* RedBits */
1120 0, /* GreenBits */
1121 0, /* BlueBits */
1122 0, /* AlphaBits */
1123 0, /* LuminanceBits */
1124 8, /* IntensityBits */
1125 0, /* IndexBits */
1126 0, /* DepthBits */
1127 0, /* StencilBits */
1128 1, /* TexelBytes */
1129 _mesa_texstore_a8,/*yes*/ /* StoreTexImageFunc */
1130 fetch_texel_1d_i8, /* FetchTexel1D */
1131 fetch_texel_2d_i8, /* FetchTexel2D */
1132 fetch_texel_3d_i8, /* FetchTexel3D */
1133 NULL, /* FetchTexel1Df */
1134 NULL, /* FetchTexel2Df */
1135 NULL, /* FetchTexel3Df */
1136 store_texel_i8 /* StoreTexel */
1137 };
1138
1139 const struct gl_texture_format _mesa_texformat_ci8 = {
1140 MESA_FORMAT_CI8, /* MesaFormat */
1141 GL_COLOR_INDEX, /* BaseFormat */
1142 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1143 0, /* RedBits */
1144 0, /* GreenBits */
1145 0, /* BlueBits */
1146 0, /* AlphaBits */
1147 0, /* LuminanceBits */
1148 0, /* IntensityBits */
1149 8, /* IndexBits */
1150 0, /* DepthBits */
1151 0, /* StencilBits */
1152 1, /* TexelBytes */
1153 _mesa_texstore_ci8, /* StoreTexImageFunc */
1154 fetch_texel_1d_ci8, /* FetchTexel1D */
1155 fetch_texel_2d_ci8, /* FetchTexel2D */
1156 fetch_texel_3d_ci8, /* FetchTexel3D */
1157 NULL, /* FetchTexel1Df */
1158 NULL, /* FetchTexel2Df */
1159 NULL, /* FetchTexel3Df */
1160 store_texel_ci8 /* StoreTexel */
1161 };
1162
1163 const struct gl_texture_format _mesa_texformat_ycbcr = {
1164 MESA_FORMAT_YCBCR, /* MesaFormat */
1165 GL_YCBCR_MESA, /* BaseFormat */
1166 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1167 0, /* RedBits */
1168 0, /* GreenBits */
1169 0, /* BlueBits */
1170 0, /* AlphaBits */
1171 0, /* LuminanceBits */
1172 0, /* IntensityBits */
1173 0, /* IndexBits */
1174 0, /* DepthBits */
1175 0, /* StencilBits */
1176 2, /* TexelBytes */
1177 _mesa_texstore_ycbcr, /* StoreTexImageFunc */
1178 fetch_texel_1d_ycbcr, /* FetchTexel1D */
1179 fetch_texel_2d_ycbcr, /* FetchTexel2D */
1180 fetch_texel_3d_ycbcr, /* FetchTexel3D */
1181 NULL, /* FetchTexel1Df */
1182 NULL, /* FetchTexel2Df */
1183 NULL, /* FetchTexel3Df */
1184 store_texel_ycbcr /* StoreTexel */
1185 };
1186
1187 const struct gl_texture_format _mesa_texformat_ycbcr_rev = {
1188 MESA_FORMAT_YCBCR_REV, /* MesaFormat */
1189 GL_YCBCR_MESA, /* BaseFormat */
1190 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1191 0, /* RedBits */
1192 0, /* GreenBits */
1193 0, /* BlueBits */
1194 0, /* AlphaBits */
1195 0, /* LuminanceBits */
1196 0, /* IntensityBits */
1197 0, /* IndexBits */
1198 0, /* DepthBits */
1199 0, /* StencilBits */
1200 2, /* TexelBytes */
1201 _mesa_texstore_ycbcr, /* StoreTexImageFunc */
1202 fetch_texel_1d_ycbcr_rev, /* FetchTexel1D */
1203 fetch_texel_2d_ycbcr_rev, /* FetchTexel2D */
1204 fetch_texel_3d_ycbcr_rev, /* FetchTexel3D */
1205 NULL, /* FetchTexel1Df */
1206 NULL, /* FetchTexel2Df */
1207 NULL, /* FetchTexel3Df */
1208 store_texel_ycbcr_rev /* StoreTexel */
1209 };
1210
1211 const struct gl_texture_format _mesa_texformat_z24_s8 = {
1212 MESA_FORMAT_Z24_S8, /* MesaFormat */
1213 GL_DEPTH_STENCIL_EXT, /* BaseFormat */
1214 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1215 0, /* RedBits */
1216 0, /* GreenBits */
1217 0, /* BlueBits */
1218 0, /* AlphaBits */
1219 0, /* LuminanceBits */
1220 0, /* IntensityBits */
1221 0, /* IndexBits */
1222 24, /* DepthBits */
1223 8, /* StencilBits */
1224 4, /* TexelBytes */
1225 _mesa_texstore_z24_s8, /* StoreTexImageFunc */
1226 NULL, /* FetchTexel1D */
1227 NULL, /* FetchTexel2D */
1228 NULL, /* FetchTexel3D */
1229 fetch_texel_1d_f_z24_s8, /* FetchTexel1Df */
1230 fetch_texel_2d_f_z24_s8, /* FetchTexel2Df */
1231 fetch_texel_3d_f_z24_s8, /* FetchTexel3Df */
1232 store_texel_z24_s8 /* StoreTexel */
1233 };
1234
1235 const struct gl_texture_format _mesa_texformat_s8_z24 = {
1236 MESA_FORMAT_S8_Z24, /* MesaFormat */
1237 GL_DEPTH_STENCIL_EXT, /* BaseFormat */
1238 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1239 0, /* RedBits */
1240 0, /* GreenBits */
1241 0, /* BlueBits */
1242 0, /* AlphaBits */
1243 0, /* LuminanceBits */
1244 0, /* IntensityBits */
1245 0, /* IndexBits */
1246 24, /* DepthBits */
1247 8, /* StencilBits */
1248 4, /* TexelBytes */
1249 _mesa_texstore_s8_z24, /* StoreTexImageFunc */
1250 NULL, /* FetchTexel1D */
1251 NULL, /* FetchTexel2D */
1252 NULL, /* FetchTexel3D */
1253 fetch_texel_1d_f_s8_z24, /* FetchTexel1Df */
1254 fetch_texel_2d_f_s8_z24, /* FetchTexel2Df */
1255 fetch_texel_3d_f_s8_z24, /* FetchTexel3Df */
1256 store_texel_s8_z24 /* StoreTexel */
1257 };
1258
1259 const struct gl_texture_format _mesa_texformat_z16 = {
1260 MESA_FORMAT_Z16, /* MesaFormat */
1261 GL_DEPTH_COMPONENT, /* BaseFormat */
1262 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1263 0, /* RedBits */
1264 0, /* GreenBits */
1265 0, /* BlueBits */
1266 0, /* AlphaBits */
1267 0, /* LuminanceBits */
1268 0, /* IntensityBits */
1269 0, /* IndexBits */
1270 sizeof(GLushort) * 8, /* DepthBits */
1271 0, /* StencilBits */
1272 sizeof(GLushort), /* TexelBytes */
1273 _mesa_texstore_z16, /* StoreTexImageFunc */
1274 NULL, /* FetchTexel1D */
1275 NULL, /* FetchTexel1D */
1276 NULL, /* FetchTexel1D */
1277 fetch_texel_1d_f_z16, /* FetchTexel1Df */
1278 fetch_texel_2d_f_z16, /* FetchTexel2Df */
1279 fetch_texel_3d_f_z16, /* FetchTexel3Df */
1280 store_texel_z16 /* StoreTexel */
1281 };
1282
1283 const struct gl_texture_format _mesa_texformat_z32 = {
1284 MESA_FORMAT_Z32, /* MesaFormat */
1285 GL_DEPTH_COMPONENT, /* BaseFormat */
1286 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
1287 0, /* RedBits */
1288 0, /* GreenBits */
1289 0, /* BlueBits */
1290 0, /* AlphaBits */
1291 0, /* LuminanceBits */
1292 0, /* IntensityBits */
1293 0, /* IndexBits */
1294 sizeof(GLuint) * 8, /* DepthBits */
1295 0, /* StencilBits */
1296 sizeof(GLuint), /* TexelBytes */
1297 _mesa_texstore_z32, /* StoreTexImageFunc */
1298 NULL, /* FetchTexel1D */
1299 NULL, /* FetchTexel1D */
1300 NULL, /* FetchTexel1D */
1301 fetch_texel_1d_f_z32, /* FetchTexel1Df */
1302 fetch_texel_2d_f_z32, /* FetchTexel2Df */
1303 fetch_texel_3d_f_z32, /* FetchTexel3Df */
1304 store_texel_z32 /* StoreTexel */
1305 };
1306
1307 /*@}*/
1308
1309
1310 /***************************************************************/
1311 /** \name Null format (useful for proxy textures) */
1312 /*@{*/
1313
1314 const struct gl_texture_format _mesa_null_texformat = {
1315 -1, /* MesaFormat */
1316 0, /* BaseFormat */
1317 GL_NONE, /* DataType */
1318 0, /* RedBits */
1319 0, /* GreenBits */
1320 0, /* BlueBits */
1321 0, /* AlphaBits */
1322 0, /* LuminanceBits */
1323 0, /* IntensityBits */
1324 0, /* IndexBits */
1325 0, /* DepthBits */
1326 0, /* StencilBits */
1327 0, /* TexelBytes */
1328 NULL, /* StoreTexImageFunc */
1329 fetch_null_texel, /* FetchTexel1D */
1330 fetch_null_texel, /* FetchTexel2D */
1331 fetch_null_texel, /* FetchTexel3D */
1332 fetch_null_texelf, /* FetchTexel1Df */
1333 fetch_null_texelf, /* FetchTexel2Df */
1334 fetch_null_texelf, /* FetchTexel3Df */
1335 store_null_texel /* StoreTexel */
1336 };
1337
1338 /*@}*/
1339
1340
1341 /**
1342 * Choose an appropriate texture format given the format, type and
1343 * internalFormat parameters passed to glTexImage().
1344 *
1345 * \param ctx the GL context.
1346 * \param internalFormat user's prefered internal texture format.
1347 * \param format incoming image pixel format.
1348 * \param type incoming image data type.
1349 *
1350 * \return a pointer to a gl_texture_format object which describes the
1351 * choosen texture format, or NULL on failure.
1352 *
1353 * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
1354 * will typically override this function with a specialized version.
1355 */
1356 const struct gl_texture_format *
1357 _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
1358 GLenum format, GLenum type )
1359 {
1360 (void) format;
1361 (void) type;
1362
1363 switch (internalFormat) {
1364 /* RGBA formats */
1365 case 4:
1366 case GL_RGBA:
1367 case GL_RGB10_A2:
1368 case GL_RGBA12:
1369 case GL_RGBA16:
1370 return &_mesa_texformat_rgba;
1371 case GL_RGBA8:
1372 return &_mesa_texformat_rgba8888;
1373 case GL_RGB5_A1:
1374 return &_mesa_texformat_argb1555;
1375 case GL_RGBA2:
1376 return &_mesa_texformat_argb4444_rev; /* just to test another format*/
1377 case GL_RGBA4:
1378 return &_mesa_texformat_argb4444;
1379
1380 /* RGB formats */
1381 case 3:
1382 case GL_RGB:
1383 case GL_RGB10:
1384 case GL_RGB12:
1385 case GL_RGB16:
1386 return &_mesa_texformat_rgb;
1387 case GL_RGB8:
1388 return &_mesa_texformat_rgb888;
1389 case GL_R3_G3_B2:
1390 return &_mesa_texformat_rgb332;
1391 case GL_RGB4:
1392 return &_mesa_texformat_rgb565_rev; /* just to test another format */
1393 case GL_RGB5:
1394 return &_mesa_texformat_rgb565;
1395
1396 /* Alpha formats */
1397 case GL_ALPHA:
1398 case GL_ALPHA4:
1399 case GL_ALPHA12:
1400 case GL_ALPHA16:
1401 return &_mesa_texformat_alpha;
1402 case GL_ALPHA8:
1403 return &_mesa_texformat_a8;
1404
1405 /* Luminance formats */
1406 case 1:
1407 case GL_LUMINANCE:
1408 case GL_LUMINANCE4:
1409 case GL_LUMINANCE12:
1410 case GL_LUMINANCE16:
1411 return &_mesa_texformat_luminance;
1412 case GL_LUMINANCE8:
1413 return &_mesa_texformat_l8;
1414
1415 /* Luminance/Alpha formats */
1416 case 2:
1417 case GL_LUMINANCE_ALPHA:
1418 case GL_LUMINANCE4_ALPHA4:
1419 case GL_LUMINANCE6_ALPHA2:
1420 case GL_LUMINANCE12_ALPHA4:
1421 case GL_LUMINANCE12_ALPHA12:
1422 case GL_LUMINANCE16_ALPHA16:
1423 return &_mesa_texformat_luminance_alpha;
1424 case GL_LUMINANCE8_ALPHA8:
1425 return &_mesa_texformat_al88;
1426
1427 case GL_INTENSITY:
1428 case GL_INTENSITY4:
1429 case GL_INTENSITY12:
1430 case GL_INTENSITY16:
1431 return &_mesa_texformat_intensity;
1432 case GL_INTENSITY8:
1433 return &_mesa_texformat_i8;
1434
1435 case GL_COLOR_INDEX:
1436 case GL_COLOR_INDEX1_EXT:
1437 case GL_COLOR_INDEX2_EXT:
1438 case GL_COLOR_INDEX4_EXT:
1439 case GL_COLOR_INDEX12_EXT:
1440 case GL_COLOR_INDEX16_EXT:
1441 case GL_COLOR_INDEX8_EXT:
1442 return &_mesa_texformat_ci8;
1443
1444 default:
1445 ; /* fallthrough */
1446 }
1447
1448 if (ctx->Extensions.ARB_depth_texture) {
1449 switch (internalFormat) {
1450 case GL_DEPTH_COMPONENT:
1451 case GL_DEPTH_COMPONENT24:
1452 case GL_DEPTH_COMPONENT32:
1453 return &_mesa_texformat_z32;
1454 case GL_DEPTH_COMPONENT16:
1455 return &_mesa_texformat_z16;
1456 default:
1457 ; /* fallthrough */
1458 }
1459 }
1460
1461 if (ctx->Extensions.ARB_texture_compression) {
1462 switch (internalFormat) {
1463 case GL_COMPRESSED_ALPHA_ARB:
1464 return &_mesa_texformat_alpha;
1465 case GL_COMPRESSED_LUMINANCE_ARB:
1466 return &_mesa_texformat_luminance;
1467 case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
1468 return &_mesa_texformat_luminance_alpha;
1469 case GL_COMPRESSED_INTENSITY_ARB:
1470 return &_mesa_texformat_intensity;
1471 case GL_COMPRESSED_RGB_ARB:
1472 #if FEATURE_texture_fxt1
1473 if (ctx->Extensions.TDFX_texture_compression_FXT1)
1474 return &_mesa_texformat_rgb_fxt1;
1475 #endif
1476 #if FEATURE_texture_s3tc
1477 if (ctx->Extensions.EXT_texture_compression_s3tc ||
1478 ctx->Extensions.S3_s3tc)
1479 return &_mesa_texformat_rgb_dxt1;
1480 #endif
1481 return &_mesa_texformat_rgb;
1482 case GL_COMPRESSED_RGBA_ARB:
1483 #if FEATURE_texture_fxt1
1484 if (ctx->Extensions.TDFX_texture_compression_FXT1)
1485 return &_mesa_texformat_rgba_fxt1;
1486 #endif
1487 #if FEATURE_texture_s3tc
1488 if (ctx->Extensions.EXT_texture_compression_s3tc ||
1489 ctx->Extensions.S3_s3tc)
1490 return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1, see spec */
1491 #endif
1492 return &_mesa_texformat_rgba;
1493 default:
1494 ; /* fallthrough */
1495 }
1496 }
1497
1498 if (ctx->Extensions.MESA_ycbcr_texture) {
1499 if (internalFormat == GL_YCBCR_MESA) {
1500 if (type == GL_UNSIGNED_SHORT_8_8_MESA)
1501 return &_mesa_texformat_ycbcr;
1502 else
1503 return &_mesa_texformat_ycbcr_rev;
1504 }
1505 }
1506
1507 #if FEATURE_texture_fxt1
1508 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
1509 switch (internalFormat) {
1510 case GL_COMPRESSED_RGB_FXT1_3DFX:
1511 return &_mesa_texformat_rgb_fxt1;
1512 case GL_COMPRESSED_RGBA_FXT1_3DFX:
1513 return &_mesa_texformat_rgba_fxt1;
1514 default:
1515 ; /* fallthrough */
1516 }
1517 }
1518 #endif
1519
1520 #if FEATURE_texture_s3tc
1521 if (ctx->Extensions.EXT_texture_compression_s3tc) {
1522 switch (internalFormat) {
1523 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
1524 return &_mesa_texformat_rgb_dxt1;
1525 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
1526 return &_mesa_texformat_rgba_dxt1;
1527 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
1528 return &_mesa_texformat_rgba_dxt3;
1529 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
1530 return &_mesa_texformat_rgba_dxt5;
1531 default:
1532 ; /* fallthrough */
1533 }
1534 }
1535
1536 if (ctx->Extensions.S3_s3tc) {
1537 switch (internalFormat) {
1538 case GL_RGB_S3TC:
1539 case GL_RGB4_S3TC:
1540 return &_mesa_texformat_rgb_dxt1;
1541 case GL_RGBA_S3TC:
1542 case GL_RGBA4_S3TC:
1543 return &_mesa_texformat_rgba_dxt3;
1544 default:
1545 ; /* fallthrough */
1546 }
1547 }
1548 #endif
1549
1550 if (ctx->Extensions.ARB_texture_float) {
1551 switch (internalFormat) {
1552 case GL_ALPHA16F_ARB:
1553 return &_mesa_texformat_alpha_float16;
1554 case GL_ALPHA32F_ARB:
1555 return &_mesa_texformat_alpha_float32;
1556 case GL_LUMINANCE16F_ARB:
1557 return &_mesa_texformat_luminance_float16;
1558 case GL_LUMINANCE32F_ARB:
1559 return &_mesa_texformat_luminance_float32;
1560 case GL_LUMINANCE_ALPHA16F_ARB:
1561 return &_mesa_texformat_luminance_alpha_float16;
1562 case GL_LUMINANCE_ALPHA32F_ARB:
1563 return &_mesa_texformat_luminance_alpha_float32;
1564 case GL_INTENSITY16F_ARB:
1565 return &_mesa_texformat_intensity_float16;
1566 case GL_INTENSITY32F_ARB:
1567 return &_mesa_texformat_intensity_float32;
1568 case GL_RGB16F_ARB:
1569 return &_mesa_texformat_rgb_float16;
1570 case GL_RGB32F_ARB:
1571 return &_mesa_texformat_rgb_float32;
1572 case GL_RGBA16F_ARB:
1573 return &_mesa_texformat_rgba_float16;
1574 case GL_RGBA32F_ARB:
1575 return &_mesa_texformat_rgba_float32;
1576 default:
1577 ; /* fallthrough */
1578 }
1579 }
1580
1581 if (ctx->Extensions.EXT_packed_depth_stencil) {
1582 switch (internalFormat) {
1583 case GL_DEPTH_STENCIL_EXT:
1584 case GL_DEPTH24_STENCIL8_EXT:
1585 return &_mesa_texformat_z24_s8;
1586 default:
1587 ; /* fallthrough */
1588 }
1589 }
1590
1591 #if FEATURE_EXT_texture_sRGB
1592 if (ctx->Extensions.EXT_texture_sRGB) {
1593 switch (internalFormat) {
1594 case GL_SRGB_EXT:
1595 case GL_SRGB8_EXT:
1596 return &_mesa_texformat_srgb8;
1597 case GL_SRGB_ALPHA_EXT:
1598 case GL_SRGB8_ALPHA8_EXT:
1599 return &_mesa_texformat_srgba8;
1600 case GL_SLUMINANCE_EXT:
1601 case GL_SLUMINANCE8_EXT:
1602 return &_mesa_texformat_sl8;
1603 case GL_SLUMINANCE_ALPHA_EXT:
1604 case GL_SLUMINANCE8_ALPHA8_EXT:
1605 return &_mesa_texformat_sla8;
1606 case GL_COMPRESSED_SLUMINANCE_EXT:
1607 return &_mesa_texformat_sl8;
1608 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
1609 return &_mesa_texformat_sla8;
1610 case GL_COMPRESSED_SRGB_EXT:
1611 #if FEATURE_texture_s3tc
1612 if (ctx->Extensions.EXT_texture_compression_s3tc)
1613 return &_mesa_texformat_srgb_dxt1;
1614 #endif
1615 return &_mesa_texformat_srgb8;
1616 case GL_COMPRESSED_SRGB_ALPHA_EXT:
1617 #if FEATURE_texture_s3tc
1618 if (ctx->Extensions.EXT_texture_compression_s3tc)
1619 return &_mesa_texformat_srgba_dxt3; /* Not srgba_dxt1, see spec */
1620 #endif
1621 return &_mesa_texformat_srgba8;
1622 #if FEATURE_texture_s3tc
1623 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
1624 if (ctx->Extensions.EXT_texture_compression_s3tc)
1625 return &_mesa_texformat_srgb_dxt1;
1626 break;
1627 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
1628 if (ctx->Extensions.EXT_texture_compression_s3tc)
1629 return &_mesa_texformat_srgba_dxt1;
1630 break;
1631 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
1632 if (ctx->Extensions.EXT_texture_compression_s3tc)
1633 return &_mesa_texformat_srgba_dxt3;
1634 break;
1635 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
1636 if (ctx->Extensions.EXT_texture_compression_s3tc)
1637 return &_mesa_texformat_srgba_dxt5;
1638 break;
1639 #endif
1640 default:
1641 ; /* fallthrough */
1642 }
1643 }
1644 #endif /* FEATURE_EXT_texture_sRGB */
1645
1646 _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
1647 return NULL;
1648 }
1649
1650
1651
1652 /**
1653 * Return datatype and number of components per texel for the
1654 * given gl_texture_format.
1655 */
1656 void
1657 _mesa_format_to_type_and_comps(const struct gl_texture_format *format,
1658 GLenum *datatype, GLuint *comps)
1659 {
1660 switch (format->MesaFormat) {
1661 case MESA_FORMAT_RGBA8888:
1662 case MESA_FORMAT_RGBA8888_REV:
1663 case MESA_FORMAT_ARGB8888:
1664 case MESA_FORMAT_ARGB8888_REV:
1665 *datatype = CHAN_TYPE;
1666 *comps = 4;
1667 return;
1668 case MESA_FORMAT_RGB888:
1669 case MESA_FORMAT_BGR888:
1670 *datatype = GL_UNSIGNED_BYTE;
1671 *comps = 3;
1672 return;
1673 case MESA_FORMAT_RGB565:
1674 case MESA_FORMAT_RGB565_REV:
1675 *datatype = GL_UNSIGNED_SHORT_5_6_5;
1676 *comps = 3;
1677 return;
1678
1679 case MESA_FORMAT_ARGB4444:
1680 case MESA_FORMAT_ARGB4444_REV:
1681 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
1682 *comps = 4;
1683 return;
1684
1685 case MESA_FORMAT_ARGB1555:
1686 case MESA_FORMAT_ARGB1555_REV:
1687 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
1688 *comps = 4;
1689 return;
1690
1691 case MESA_FORMAT_AL88:
1692 case MESA_FORMAT_AL88_REV:
1693 *datatype = GL_UNSIGNED_BYTE;
1694 *comps = 2;
1695 return;
1696 case MESA_FORMAT_RGB332:
1697 *datatype = GL_UNSIGNED_BYTE_3_3_2;
1698 *comps = 3;
1699 return;
1700
1701 case MESA_FORMAT_A8:
1702 case MESA_FORMAT_L8:
1703 case MESA_FORMAT_I8:
1704 case MESA_FORMAT_CI8:
1705 *datatype = GL_UNSIGNED_BYTE;
1706 *comps = 1;
1707 return;
1708
1709 case MESA_FORMAT_YCBCR:
1710 case MESA_FORMAT_YCBCR_REV:
1711 *datatype = GL_UNSIGNED_SHORT;
1712 *comps = 2;
1713 return;
1714
1715 case MESA_FORMAT_Z24_S8:
1716 *datatype = GL_UNSIGNED_INT;
1717 *comps = 1; /* XXX OK? */
1718 return;
1719
1720 case MESA_FORMAT_S8_Z24:
1721 *datatype = GL_UNSIGNED_INT;
1722 *comps = 1; /* XXX OK? */
1723 return;
1724
1725 case MESA_FORMAT_Z16:
1726 *datatype = GL_UNSIGNED_SHORT;
1727 *comps = 1;
1728 return;
1729
1730 case MESA_FORMAT_Z32:
1731 *datatype = GL_UNSIGNED_INT;
1732 *comps = 1;
1733 return;
1734
1735 #if FEATURE_EXT_texture_sRGB
1736 case MESA_FORMAT_SRGB8:
1737 *datatype = GL_UNSIGNED_BYTE;
1738 *comps = 3;
1739 return;
1740 case MESA_FORMAT_SRGBA8:
1741 case MESA_FORMAT_SARGB8:
1742 *datatype = GL_UNSIGNED_BYTE;
1743 *comps = 4;
1744 return;
1745 case MESA_FORMAT_SL8:
1746 *datatype = GL_UNSIGNED_BYTE;
1747 *comps = 1;
1748 return;
1749 case MESA_FORMAT_SLA8:
1750 *datatype = GL_UNSIGNED_BYTE;
1751 *comps = 2;
1752 return;
1753 #endif
1754
1755 #if FEATURE_texture_fxt1
1756 case MESA_FORMAT_RGB_FXT1:
1757 case MESA_FORMAT_RGBA_FXT1:
1758 #endif
1759 #if FEATURE_texture_s3tc
1760 case MESA_FORMAT_RGB_DXT1:
1761 case MESA_FORMAT_RGBA_DXT1:
1762 case MESA_FORMAT_RGBA_DXT3:
1763 case MESA_FORMAT_RGBA_DXT5:
1764 #if FEATURE_EXT_texture_sRGB
1765 case MESA_FORMAT_SRGB_DXT1:
1766 case MESA_FORMAT_SRGBA_DXT1:
1767 case MESA_FORMAT_SRGBA_DXT3:
1768 case MESA_FORMAT_SRGBA_DXT5:
1769 #endif
1770 /* XXX generate error instead? */
1771 *datatype = GL_UNSIGNED_BYTE;
1772 *comps = 0;
1773 return;
1774 #endif
1775
1776 case MESA_FORMAT_RGBA:
1777 *datatype = CHAN_TYPE;
1778 *comps = 4;
1779 return;
1780 case MESA_FORMAT_RGB:
1781 *datatype = CHAN_TYPE;
1782 *comps = 3;
1783 return;
1784 case MESA_FORMAT_LUMINANCE_ALPHA:
1785 *datatype = CHAN_TYPE;
1786 *comps = 2;
1787 return;
1788 case MESA_FORMAT_ALPHA:
1789 case MESA_FORMAT_LUMINANCE:
1790 case MESA_FORMAT_INTENSITY:
1791 *datatype = CHAN_TYPE;
1792 *comps = 1;
1793 return;
1794
1795 case MESA_FORMAT_RGBA_FLOAT32:
1796 *datatype = GL_FLOAT;
1797 *comps = 4;
1798 return;
1799 case MESA_FORMAT_RGBA_FLOAT16:
1800 *datatype = GL_HALF_FLOAT_ARB;
1801 *comps = 4;
1802 return;
1803 case MESA_FORMAT_RGB_FLOAT32:
1804 *datatype = GL_FLOAT;
1805 *comps = 3;
1806 return;
1807 case MESA_FORMAT_RGB_FLOAT16:
1808 *datatype = GL_HALF_FLOAT_ARB;
1809 *comps = 3;
1810 return;
1811 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
1812 *datatype = GL_FLOAT;
1813 *comps = 2;
1814 return;
1815 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
1816 *datatype = GL_HALF_FLOAT_ARB;
1817 *comps = 2;
1818 return;
1819 case MESA_FORMAT_ALPHA_FLOAT32:
1820 case MESA_FORMAT_LUMINANCE_FLOAT32:
1821 case MESA_FORMAT_INTENSITY_FLOAT32:
1822 *datatype = GL_FLOAT;
1823 *comps = 1;
1824 return;
1825 case MESA_FORMAT_ALPHA_FLOAT16:
1826 case MESA_FORMAT_LUMINANCE_FLOAT16:
1827 case MESA_FORMAT_INTENSITY_FLOAT16:
1828 *datatype = GL_HALF_FLOAT_ARB;
1829 *comps = 1;
1830 return;
1831
1832 default:
1833 _mesa_problem(NULL, "bad format in _mesa_format_to_type_and_comps");
1834 *datatype = 0;
1835 *comps = 1;
1836 }
1837 }