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[mesa.git] / src / mesa / main / texformat.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.1
4 *
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /**
27 * \file texformat.c
28 * Texture formats.
29 *
30 * \author Gareth Hughes
31 */
32
33
34 #include "glheader.h"
35 #include "colormac.h"
36 #include "context.h"
37 #include "image.h"
38 #include "imports.h"
39 #include "mtypes.h"
40 #include "texformat.h"
41 #include "teximage.h"
42 #include "texstate.h"
43 #include "texstore.h"
44
45
46
47 /* Texel fetch routines for all supported formats
48 */
49 #define DIM 1
50 #include "texformat_tmp.h"
51
52 #define DIM 2
53 #include "texformat_tmp.h"
54
55 #define DIM 3
56 #include "texformat_tmp.h"
57
58 /**
59 * Null texel fetch function.
60 *
61 * Have to have this so the FetchTexel function pointer is never NULL.
62 */
63 static void fetch_null_texel( const struct gl_texture_image *texImage,
64 GLint i, GLint j, GLint k, GLchan *texel )
65 {
66 texel[RCOMP] = 0;
67 texel[GCOMP] = 0;
68 texel[BCOMP] = 0;
69 texel[ACOMP] = 0;
70 _mesa_warning(NULL, "fetch_null_texel() called!");
71 }
72
73 static void fetch_null_texelf( const struct gl_texture_image *texImage,
74 GLint i, GLint j, GLint k, GLfloat *texel )
75 {
76 texel[RCOMP] = 0.0;
77 texel[GCOMP] = 0.0;
78 texel[BCOMP] = 0.0;
79 texel[ACOMP] = 0.0;
80 _mesa_warning(NULL, "fetch_null_texelf() called!");
81 }
82
83
84 /***************************************************************/
85 /** \name Default GLchan-based formats */
86 /*@{*/
87
88 const struct gl_texture_format _mesa_texformat_rgba = {
89 MESA_FORMAT_RGBA, /* MesaFormat */
90 GL_RGBA, /* BaseFormat */
91 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
92 CHAN_BITS, /* RedBits */
93 CHAN_BITS, /* GreenBits */
94 CHAN_BITS, /* BlueBits */
95 CHAN_BITS, /* AlphaBits */
96 0, /* LuminanceBits */
97 0, /* IntensityBits */
98 0, /* IndexBits */
99 0, /* DepthBits */
100 4 * sizeof(GLchan), /* TexelBytes */
101 _mesa_texstore_rgba, /* StoreTexImageFunc */
102 fetch_texel_1d_rgba, /* FetchTexel1D */
103 fetch_texel_2d_rgba, /* FetchTexel2D */
104 fetch_texel_3d_rgba, /* FetchTexel3D */
105 fetch_texel_1d_f_rgba, /* FetchTexel1Df */
106 fetch_texel_2d_f_rgba, /* FetchTexel2Df */
107 fetch_texel_3d_f_rgba, /* FetchTexel3Df */
108 };
109
110 const struct gl_texture_format _mesa_texformat_rgb = {
111 MESA_FORMAT_RGB, /* MesaFormat */
112 GL_RGB, /* BaseFormat */
113 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
114 CHAN_BITS, /* RedBits */
115 CHAN_BITS, /* GreenBits */
116 CHAN_BITS, /* BlueBits */
117 0, /* AlphaBits */
118 0, /* LuminanceBits */
119 0, /* IntensityBits */
120 0, /* IndexBits */
121 0, /* DepthBits */
122 3 * sizeof(GLchan), /* TexelBytes */
123 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
124 fetch_texel_1d_rgb, /* FetchTexel1D */
125 fetch_texel_2d_rgb, /* FetchTexel2D */
126 fetch_texel_3d_rgb, /* FetchTexel3D */
127 fetch_texel_1d_f_rgb, /* FetchTexel1Df */
128 fetch_texel_2d_f_rgb, /* FetchTexel2Df */
129 fetch_texel_3d_f_rgb, /* FetchTexel3Df */
130 };
131
132 const struct gl_texture_format _mesa_texformat_alpha = {
133 MESA_FORMAT_ALPHA, /* MesaFormat */
134 GL_ALPHA, /* BaseFormat */
135 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
136 0, /* RedBits */
137 0, /* GreenBits */
138 0, /* BlueBits */
139 CHAN_BITS, /* AlphaBits */
140 0, /* LuminanceBits */
141 0, /* IntensityBits */
142 0, /* IndexBits */
143 0, /* DepthBits */
144 sizeof(GLchan), /* TexelBytes */
145 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
146 fetch_texel_1d_alpha, /* FetchTexel1D */
147 fetch_texel_2d_alpha, /* FetchTexel2D */
148 fetch_texel_3d_alpha, /* FetchTexel3D */
149 fetch_texel_1d_f_alpha, /* FetchTexel1Df */
150 fetch_texel_2d_f_alpha, /* FetchTexel2Df */
151 fetch_texel_3d_f_alpha, /* FetchTexel3Df */
152 };
153
154 const struct gl_texture_format _mesa_texformat_luminance = {
155 MESA_FORMAT_LUMINANCE, /* MesaFormat */
156 GL_LUMINANCE, /* BaseFormat */
157 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
158 0, /* RedBits */
159 0, /* GreenBits */
160 0, /* BlueBits */
161 0, /* AlphaBits */
162 CHAN_BITS, /* LuminanceBits */
163 0, /* IntensityBits */
164 0, /* IndexBits */
165 0, /* DepthBits */
166 sizeof(GLchan), /* TexelBytes */
167 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
168 fetch_texel_1d_luminance, /* FetchTexel1D */
169 fetch_texel_2d_luminance, /* FetchTexel2D */
170 fetch_texel_3d_luminance, /* FetchTexel3D */
171 fetch_texel_1d_f_luminance, /* FetchTexel1Df */
172 fetch_texel_2d_f_luminance, /* FetchTexel2Df */
173 fetch_texel_3d_f_luminance, /* FetchTexel3Df */
174 };
175
176 const struct gl_texture_format _mesa_texformat_luminance_alpha = {
177 MESA_FORMAT_LUMINANCE_ALPHA, /* MesaFormat */
178 GL_LUMINANCE_ALPHA, /* BaseFormat */
179 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
180 0, /* RedBits */
181 0, /* GreenBits */
182 0, /* BlueBits */
183 CHAN_BITS, /* AlphaBits */
184 CHAN_BITS, /* LuminanceBits */
185 0, /* IntensityBits */
186 0, /* IndexBits */
187 0, /* DepthBits */
188 2 * sizeof(GLchan), /* TexelBytes */
189 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
190 fetch_texel_1d_luminance_alpha, /* FetchTexel1D */
191 fetch_texel_2d_luminance_alpha, /* FetchTexel2D */
192 fetch_texel_3d_luminance_alpha, /* FetchTexel3D */
193 fetch_texel_1d_f_luminance_alpha, /* FetchTexel1Df */
194 fetch_texel_2d_f_luminance_alpha, /* FetchTexel2Df */
195 fetch_texel_3d_f_luminance_alpha, /* FetchTexel3Df */
196 };
197
198 const struct gl_texture_format _mesa_texformat_intensity = {
199 MESA_FORMAT_INTENSITY, /* MesaFormat */
200 GL_INTENSITY, /* BaseFormat */
201 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
202 0, /* RedBits */
203 0, /* GreenBits */
204 0, /* BlueBits */
205 0, /* AlphaBits */
206 0, /* LuminanceBits */
207 CHAN_BITS, /* IntensityBits */
208 0, /* IndexBits */
209 0, /* DepthBits */
210 sizeof(GLchan), /* TexelBytes */
211 _mesa_texstore_rgba,/*yes*/ /* StoreTexImageFunc */
212 fetch_texel_1d_intensity, /* FetchTexel1D */
213 fetch_texel_2d_intensity, /* FetchTexel2D */
214 fetch_texel_3d_intensity, /* FetchTexel3D */
215 fetch_texel_1d_f_intensity, /* FetchTexel1Df */
216 fetch_texel_2d_f_intensity, /* FetchTexel2Df */
217 fetch_texel_3d_f_intensity, /* FetchTexel3Df */
218 };
219
220 const struct gl_texture_format _mesa_texformat_depth_component_float32 = {
221 MESA_FORMAT_DEPTH_COMPONENT_FLOAT32, /* MesaFormat */
222 GL_DEPTH_COMPONENT, /* BaseFormat */
223 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
224 0, /* RedBits */
225 0, /* GreenBits */
226 0, /* BlueBits */
227 0, /* AlphaBits */
228 0, /* LuminanceBits */
229 0, /* IntensityBits */
230 0, /* IndexBits */
231 sizeof(GLfloat) * 8, /* DepthBits */
232 sizeof(GLfloat), /* TexelBytes */
233 _mesa_texstore_depth_component_float32,/* StoreTexImageFunc */
234 fetch_null_texel, /* FetchTexel1D */
235 fetch_null_texel, /* FetchTexel1D */
236 fetch_null_texel, /* FetchTexel1D */
237 fetch_texel_1d_f_depth_component_f32,/* FetchTexel1Df */
238 fetch_texel_2d_f_depth_component_f32,/* FetchTexel2Df */
239 fetch_texel_3d_f_depth_component_f32,/* FetchTexel3Df */
240 };
241
242 const struct gl_texture_format _mesa_texformat_depth_component16 = {
243 MESA_FORMAT_DEPTH_COMPONENT16, /* MesaFormat */
244 GL_DEPTH_COMPONENT, /* BaseFormat */
245 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
246 0, /* RedBits */
247 0, /* GreenBits */
248 0, /* BlueBits */
249 0, /* AlphaBits */
250 0, /* LuminanceBits */
251 0, /* IntensityBits */
252 0, /* IndexBits */
253 sizeof(GLushort) * 8, /* DepthBits */
254 sizeof(GLushort), /* TexelBytes */
255 _mesa_texstore_depth_component16, /* StoreTexImageFunc */
256 fetch_null_texel, /* FetchTexel1D */
257 fetch_null_texel, /* FetchTexel1D */
258 fetch_null_texel, /* FetchTexel1D */
259 fetch_texel_1d_f_depth_component16, /* FetchTexel1Df */
260 fetch_texel_2d_f_depth_component16, /* FetchTexel2Df */
261 fetch_texel_3d_f_depth_component16, /* FetchTexel3Df */
262 };
263
264 const struct gl_texture_format _mesa_texformat_rgba_float32 = {
265 MESA_FORMAT_RGBA_FLOAT32, /* MesaFormat */
266 GL_RGBA, /* BaseFormat */
267 GL_FLOAT, /* DataType */
268 8 * sizeof(GLfloat), /* RedBits */
269 8 * sizeof(GLfloat), /* GreenBits */
270 8 * sizeof(GLfloat), /* BlueBits */
271 8 * sizeof(GLfloat), /* AlphaBits */
272 0, /* LuminanceBits */
273 0, /* IntensityBits */
274 0, /* IndexBits */
275 0, /* DepthBits */
276 4 * sizeof(GLfloat), /* TexelBytes */
277 _mesa_texstore_rgba_float32, /* StoreTexImageFunc */
278 fetch_texel_1d_rgba_f32, /* FetchTexel1D */
279 fetch_texel_2d_rgba_f32, /* FetchTexel1D */
280 fetch_texel_3d_rgba_f32, /* FetchTexel1D */
281 fetch_texel_1d_f_rgba_f32, /* FetchTexel1Df */
282 fetch_texel_2d_f_rgba_f32, /* FetchTexel2Df */
283 fetch_texel_3d_f_rgba_f32, /* FetchTexel3Df */
284 };
285
286 const struct gl_texture_format _mesa_texformat_rgba_float16 = {
287 MESA_FORMAT_RGBA_FLOAT16, /* MesaFormat */
288 GL_RGBA, /* BaseFormat */
289 GL_FLOAT, /* DataType */
290 8 * sizeof(GLhalfARB), /* RedBits */
291 8 * sizeof(GLhalfARB), /* GreenBits */
292 8 * sizeof(GLhalfARB), /* BlueBits */
293 8 * sizeof(GLhalfARB), /* AlphaBits */
294 0, /* LuminanceBits */
295 0, /* IntensityBits */
296 0, /* IndexBits */
297 0, /* DepthBits */
298 4 * sizeof(GLhalfARB), /* TexelBytes */
299 _mesa_texstore_rgba_float16, /* StoreTexImageFunc */
300 fetch_texel_1d_rgba_f16, /* FetchTexel1D */
301 fetch_texel_2d_rgba_f16, /* FetchTexel1D */
302 fetch_texel_3d_rgba_f16, /* FetchTexel1D */
303 fetch_texel_1d_f_rgba_f16, /* FetchTexel1Df */
304 fetch_texel_2d_f_rgba_f16, /* FetchTexel2Df */
305 fetch_texel_3d_f_rgba_f16, /* FetchTexel3Df */
306 };
307
308 const struct gl_texture_format _mesa_texformat_rgb_float32 = {
309 MESA_FORMAT_RGB_FLOAT32, /* MesaFormat */
310 GL_RGB, /* BaseFormat */
311 GL_FLOAT, /* DataType */
312 8 * sizeof(GLfloat), /* RedBits */
313 8 * sizeof(GLfloat), /* GreenBits */
314 8 * sizeof(GLfloat), /* BlueBits */
315 0, /* AlphaBits */
316 0, /* LuminanceBits */
317 0, /* IntensityBits */
318 0, /* IndexBits */
319 0, /* DepthBits */
320 3 * sizeof(GLfloat), /* TexelBytes */
321 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
322 fetch_texel_1d_rgb_f32, /* FetchTexel1D */
323 fetch_texel_2d_rgb_f32, /* FetchTexel1D */
324 fetch_texel_3d_rgb_f32, /* FetchTexel1D */
325 fetch_texel_1d_f_rgb_f32, /* FetchTexel1Df */
326 fetch_texel_2d_f_rgb_f32, /* FetchTexel2Df */
327 fetch_texel_3d_f_rgb_f32, /* FetchTexel3Df */
328 };
329
330 const struct gl_texture_format _mesa_texformat_rgb_float16 = {
331 MESA_FORMAT_RGB_FLOAT16, /* MesaFormat */
332 GL_RGB, /* BaseFormat */
333 GL_FLOAT, /* DataType */
334 8 * sizeof(GLhalfARB), /* RedBits */
335 8 * sizeof(GLhalfARB), /* GreenBits */
336 8 * sizeof(GLhalfARB), /* BlueBits */
337 0, /* AlphaBits */
338 0, /* LuminanceBits */
339 0, /* IntensityBits */
340 0, /* IndexBits */
341 0, /* DepthBits */
342 3 * sizeof(GLhalfARB), /* TexelBytes */
343 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
344 fetch_texel_1d_rgb_f16, /* FetchTexel1D */
345 fetch_texel_2d_rgb_f16, /* FetchTexel1D */
346 fetch_texel_3d_rgb_f16, /* FetchTexel1D */
347 fetch_texel_1d_f_rgb_f16, /* FetchTexel1Df */
348 fetch_texel_2d_f_rgb_f16, /* FetchTexel2Df */
349 fetch_texel_3d_f_rgb_f16 /* FetchTexel3Df */
350 };
351
352 const struct gl_texture_format _mesa_texformat_alpha_float32 = {
353 MESA_FORMAT_ALPHA_FLOAT32, /* MesaFormat */
354 GL_ALPHA, /* BaseFormat */
355 GL_FLOAT, /* DataType */
356 0, /* RedBits */
357 0, /* GreenBits */
358 0, /* BlueBits */
359 8 * sizeof(GLfloat), /* AlphaBits */
360 0, /* LuminanceBits */
361 0, /* IntensityBits */
362 0, /* IndexBits */
363 0, /* DepthBits */
364 1 * sizeof(GLfloat), /* TexelBytes */
365 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
366 fetch_texel_1d_alpha_f32, /* FetchTexel1D */
367 fetch_texel_2d_alpha_f32, /* FetchTexel1D */
368 fetch_texel_3d_alpha_f32, /* FetchTexel1D */
369 fetch_texel_1d_f_alpha_f32, /* FetchTexel1Df */
370 fetch_texel_2d_f_alpha_f32, /* FetchTexel2Df */
371 fetch_texel_3d_f_alpha_f32 /* FetchTexel3Df */
372 };
373
374 const struct gl_texture_format _mesa_texformat_alpha_float16 = {
375 MESA_FORMAT_ALPHA_FLOAT16, /* MesaFormat */
376 GL_ALPHA, /* BaseFormat */
377 GL_FLOAT, /* DataType */
378 0, /* RedBits */
379 0, /* GreenBits */
380 0, /* BlueBits */
381 8 * sizeof(GLhalfARB), /* AlphaBits */
382 0, /* LuminanceBits */
383 0, /* IntensityBits */
384 0, /* IndexBits */
385 0, /* DepthBits */
386 1 * sizeof(GLhalfARB), /* TexelBytes */
387 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
388 fetch_texel_1d_alpha_f16, /* FetchTexel1D */
389 fetch_texel_2d_alpha_f16, /* FetchTexel1D */
390 fetch_texel_3d_alpha_f16, /* FetchTexel1D */
391 fetch_texel_1d_f_alpha_f16, /* FetchTexel1Df */
392 fetch_texel_2d_f_alpha_f16, /* FetchTexel2Df */
393 fetch_texel_3d_f_alpha_f16 /* FetchTexel3Df */
394 };
395
396 const struct gl_texture_format _mesa_texformat_luminance_float32 = {
397 MESA_FORMAT_LUMINANCE_FLOAT32, /* MesaFormat */
398 GL_LUMINANCE, /* BaseFormat */
399 GL_FLOAT, /* DataType */
400 0, /* RedBits */
401 0, /* GreenBits */
402 0, /* BlueBits */
403 0, /* AlphaBits */
404 8 * sizeof(GLfloat), /* LuminanceBits */
405 0, /* IntensityBits */
406 0, /* IndexBits */
407 0, /* DepthBits */
408 1 * sizeof(GLfloat), /* TexelBytes */
409 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
410 fetch_texel_1d_luminance_f32, /* FetchTexel1D */
411 fetch_texel_2d_luminance_f32, /* FetchTexel2D */
412 fetch_texel_3d_luminance_f32, /* FetchTexel3D */
413 fetch_texel_1d_f_luminance_f32, /* FetchTexel1Df */
414 fetch_texel_2d_f_luminance_f32, /* FetchTexel2Df */
415 fetch_texel_3d_f_luminance_f32 /* FetchTexel3Df */
416 };
417
418 const struct gl_texture_format _mesa_texformat_luminance_float16 = {
419 MESA_FORMAT_LUMINANCE_FLOAT16, /* MesaFormat */
420 GL_LUMINANCE, /* BaseFormat */
421 GL_FLOAT, /* DataType */
422 0, /* RedBits */
423 0, /* GreenBits */
424 0, /* BlueBits */
425 0, /* AlphaBits */
426 8 * sizeof(GLhalfARB), /* LuminanceBits */
427 0, /* IntensityBits */
428 0, /* IndexBits */
429 0, /* DepthBits */
430 1 * sizeof(GLhalfARB), /* TexelBytes */
431 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
432 fetch_texel_1d_luminance_f16, /* FetchTexel1D */
433 fetch_texel_2d_luminance_f16, /* FetchTexel2D */
434 fetch_texel_3d_luminance_f16, /* FetchTexel3D */
435 fetch_texel_1d_f_luminance_f16, /* FetchTexel1Df */
436 fetch_texel_2d_f_luminance_f16, /* FetchTexel2Df */
437 fetch_texel_3d_f_luminance_f16 /* FetchTexel3Df */
438 };
439
440 const struct gl_texture_format _mesa_texformat_luminance_alpha_float32 = {
441 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32, /* MesaFormat */
442 GL_LUMINANCE_ALPHA, /* BaseFormat */
443 GL_FLOAT, /* DataType */
444 0, /* RedBits */
445 0, /* GreenBits */
446 0, /* BlueBits */
447 8 * sizeof(GLfloat), /* AlphaBits */
448 8 * sizeof(GLfloat), /* LuminanceBits */
449 0, /* IntensityBits */
450 0, /* IndexBits */
451 0, /* DepthBits */
452 2 * sizeof(GLfloat), /* TexelBytes */
453 _mesa_texstore_rgba_float32, /* StoreTexImageFunc */
454 fetch_texel_1d_luminance_alpha_f32, /* FetchTexel1D */
455 fetch_texel_2d_luminance_alpha_f32, /* FetchTexel2D */
456 fetch_texel_3d_luminance_alpha_f32, /* FetchTexel3D */
457 fetch_texel_1d_f_luminance_alpha_f32,/* FetchTexel1Df */
458 fetch_texel_2d_f_luminance_alpha_f32,/* FetchTexel2Df */
459 fetch_texel_3d_f_luminance_alpha_f32 /* FetchTexel3Df */
460 };
461
462 const struct gl_texture_format _mesa_texformat_luminance_alpha_float16 = {
463 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, /* MesaFormat */
464 GL_LUMINANCE_ALPHA, /* BaseFormat */
465 GL_FLOAT, /* DataType */
466 0, /* RedBits */
467 0, /* GreenBits */
468 0, /* BlueBits */
469 8 * sizeof(GLhalfARB), /* AlphaBits */
470 8 * sizeof(GLhalfARB), /* LuminanceBits */
471 0, /* IntensityBits */
472 0, /* IndexBits */
473 0, /* DepthBits */
474 2 * sizeof(GLhalfARB), /* TexelBytes */
475 _mesa_texstore_rgba_float16, /* StoreTexImageFunc */
476 fetch_texel_1d_luminance_alpha_f16, /* FetchTexel1D */
477 fetch_texel_2d_luminance_alpha_f16, /* FetchTexel2D */
478 fetch_texel_3d_luminance_alpha_f16, /* FetchTexel3D */
479 fetch_texel_1d_f_luminance_alpha_f16,/* FetchTexel1Df */
480 fetch_texel_2d_f_luminance_alpha_f16,/* FetchTexel2Df */
481 fetch_texel_3d_f_luminance_alpha_f16 /* FetchTexel3Df */
482 };
483
484 const struct gl_texture_format _mesa_texformat_intensity_float32 = {
485 MESA_FORMAT_INTENSITY_FLOAT32, /* MesaFormat */
486 GL_INTENSITY, /* BaseFormat */
487 GL_FLOAT, /* DataType */
488 0, /* RedBits */
489 0, /* GreenBits */
490 0, /* BlueBits */
491 0, /* AlphaBits */
492 0, /* LuminanceBits */
493 8 * sizeof(GLfloat), /* IntensityBits */
494 0, /* IndexBits */
495 0, /* DepthBits */
496 1 * sizeof(GLfloat), /* TexelBytes */
497 _mesa_texstore_rgba_float32,/*yes*/ /* StoreTexImageFunc */
498 fetch_texel_1d_intensity_f32, /* FetchTexel1D */
499 fetch_texel_2d_intensity_f32, /* FetchTexel2D */
500 fetch_texel_3d_intensity_f32, /* FetchTexel3D */
501 fetch_texel_1d_f_intensity_f32, /* FetchTexel1Df */
502 fetch_texel_2d_f_intensity_f32, /* FetchTexel2Df */
503 fetch_texel_3d_f_intensity_f32 /* FetchTexel3Df */
504 };
505
506 const struct gl_texture_format _mesa_texformat_intensity_float16 = {
507 MESA_FORMAT_INTENSITY_FLOAT16, /* MesaFormat */
508 GL_INTENSITY, /* BaseFormat */
509 GL_FLOAT, /* DataType */
510 0, /* RedBits */
511 0, /* GreenBits */
512 0, /* BlueBits */
513 0, /* AlphaBits */
514 0, /* LuminanceBits */
515 8 * sizeof(GLhalfARB), /* IntensityBits */
516 0, /* IndexBits */
517 0, /* DepthBits */
518 1 * sizeof(GLhalfARB), /* TexelBytes */
519 _mesa_texstore_rgba_float16,/*yes*/ /* StoreTexImageFunc */
520 fetch_texel_1d_intensity_f16, /* FetchTexel1D */
521 fetch_texel_2d_intensity_f16, /* FetchTexel2D */
522 fetch_texel_3d_intensity_f16, /* FetchTexel3D */
523 fetch_texel_1d_f_intensity_f16, /* FetchTexel1Df */
524 fetch_texel_2d_f_intensity_f16, /* FetchTexel2Df */
525 fetch_texel_3d_f_intensity_f16 /* FetchTexel3Df */
526 };
527
528
529 /*@}*/
530
531
532 /***************************************************************/
533 /** \name Hardware formats */
534 /*@{*/
535
536 const struct gl_texture_format _mesa_texformat_rgba8888 = {
537 MESA_FORMAT_RGBA8888, /* MesaFormat */
538 GL_RGBA, /* BaseFormat */
539 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
540 8, /* RedBits */
541 8, /* GreenBits */
542 8, /* BlueBits */
543 8, /* AlphaBits */
544 0, /* LuminanceBits */
545 0, /* IntensityBits */
546 0, /* IndexBits */
547 0, /* DepthBits */
548 4, /* TexelBytes */
549 _mesa_texstore_rgba8888, /* StoreTexImageFunc */
550 fetch_texel_1d_rgba8888, /* FetchTexel1D */
551 fetch_texel_2d_rgba8888, /* FetchTexel2D */
552 fetch_texel_3d_rgba8888, /* FetchTexel3D */
553 fetch_texel_1d_f_rgba8888, /* FetchTexel1Df */
554 fetch_texel_2d_f_rgba8888, /* FetchTexel2Df */
555 fetch_texel_3d_f_rgba8888, /* FetchTexel3Df */
556 };
557
558 const struct gl_texture_format _mesa_texformat_abgr8888 = {
559 MESA_FORMAT_ABGR8888, /* MesaFormat */
560 GL_RGBA, /* BaseFormat */
561 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
562 8, /* RedBits */
563 8, /* GreenBits */
564 8, /* BlueBits */
565 8, /* AlphaBits */
566 0, /* LuminanceBits */
567 0, /* IntensityBits */
568 0, /* IndexBits */
569 0, /* DepthBits */
570 4, /* TexelBytes */
571 _mesa_texstore_abgr8888, /* StoreTexImageFunc */
572 fetch_texel_1d_abgr8888, /* FetchTexel1D */
573 fetch_texel_2d_abgr8888, /* FetchTexel2D */
574 fetch_texel_3d_abgr8888, /* FetchTexel3D */
575 fetch_texel_1d_f_abgr8888, /* FetchTexel1Df */
576 fetch_texel_2d_f_abgr8888, /* FetchTexel2Df */
577 fetch_texel_3d_f_abgr8888, /* FetchTexel3Df */
578 };
579
580 const struct gl_texture_format _mesa_texformat_argb8888 = {
581 MESA_FORMAT_ARGB8888, /* MesaFormat */
582 GL_RGBA, /* BaseFormat */
583 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
584 8, /* RedBits */
585 8, /* GreenBits */
586 8, /* BlueBits */
587 8, /* AlphaBits */
588 0, /* LuminanceBits */
589 0, /* IntensityBits */
590 0, /* IndexBits */
591 0, /* DepthBits */
592 4, /* TexelBytes */
593 _mesa_texstore_argb8888, /* StoreTexImageFunc */
594 fetch_texel_1d_argb8888, /* FetchTexel1D */
595 fetch_texel_2d_argb8888, /* FetchTexel2D */
596 fetch_texel_3d_argb8888, /* FetchTexel3D */
597 fetch_texel_1d_f_argb8888, /* FetchTexel1Df */
598 fetch_texel_2d_f_argb8888, /* FetchTexel2Df */
599 fetch_texel_3d_f_argb8888, /* FetchTexel3Df */
600 };
601
602 const struct gl_texture_format _mesa_texformat_bgra8888 = {
603 MESA_FORMAT_BGRA8888, /* MesaFormat */
604 GL_RGBA, /* BaseFormat */
605 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
606 8, /* RedBits */
607 8, /* GreenBits */
608 8, /* BlueBits */
609 8, /* AlphaBits */
610 0, /* LuminanceBits */
611 0, /* IntensityBits */
612 0, /* IndexBits */
613 0, /* DepthBits */
614 4, /* TexelBytes */
615 _mesa_texstore_bgra8888, /* StoreTexImageFunc */
616 fetch_texel_1d_bgra8888, /* FetchTexel1D */
617 fetch_texel_2d_bgra8888, /* FetchTexel2D */
618 fetch_texel_3d_bgra8888, /* FetchTexel3D */
619 fetch_texel_1d_f_bgra8888, /* FetchTexel1Df */
620 fetch_texel_2d_f_bgra8888, /* FetchTexel2Df */
621 fetch_texel_3d_f_bgra8888, /* FetchTexel3Df */
622 };
623
624 const struct gl_texture_format _mesa_texformat_rgb888 = {
625 MESA_FORMAT_RGB888, /* MesaFormat */
626 GL_RGB, /* BaseFormat */
627 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
628 8, /* RedBits */
629 8, /* GreenBits */
630 8, /* BlueBits */
631 0, /* AlphaBits */
632 0, /* LuminanceBits */
633 0, /* IntensityBits */
634 0, /* IndexBits */
635 0, /* DepthBits */
636 3, /* TexelBytes */
637 _mesa_texstore_rgb888, /* StoreTexImageFunc */
638 fetch_texel_1d_rgb888, /* FetchTexel1D */
639 fetch_texel_2d_rgb888, /* FetchTexel2D */
640 fetch_texel_3d_rgb888, /* FetchTexel3D */
641 fetch_texel_1d_f_rgb888, /* FetchTexel1Df */
642 fetch_texel_2d_f_rgb888, /* FetchTexel2Df */
643 fetch_texel_3d_f_rgb888, /* FetchTexel3Df */
644 };
645
646 const struct gl_texture_format _mesa_texformat_bgr888 = {
647 MESA_FORMAT_BGR888, /* MesaFormat */
648 GL_RGB, /* BaseFormat */
649 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
650 8, /* RedBits */
651 8, /* GreenBits */
652 8, /* BlueBits */
653 0, /* AlphaBits */
654 0, /* LuminanceBits */
655 0, /* IntensityBits */
656 0, /* IndexBits */
657 0, /* DepthBits */
658 3, /* TexelBytes */
659 _mesa_texstore_bgr888, /* StoreTexImageFunc */
660 fetch_texel_1d_bgr888, /* FetchTexel1D */
661 fetch_texel_2d_bgr888, /* FetchTexel2D */
662 fetch_texel_3d_bgr888, /* FetchTexel3D */
663 fetch_texel_1d_f_bgr888, /* FetchTexel1Df */
664 fetch_texel_2d_f_bgr888, /* FetchTexel2Df */
665 fetch_texel_3d_f_bgr888, /* FetchTexel3Df */
666 };
667
668 const struct gl_texture_format _mesa_texformat_rgb565 = {
669 MESA_FORMAT_RGB565, /* MesaFormat */
670 GL_RGB, /* BaseFormat */
671 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
672 5, /* RedBits */
673 6, /* GreenBits */
674 5, /* BlueBits */
675 0, /* AlphaBits */
676 0, /* LuminanceBits */
677 0, /* IntensityBits */
678 0, /* IndexBits */
679 0, /* DepthBits */
680 2, /* TexelBytes */
681 _mesa_texstore_rgb565, /* StoreTexImageFunc */
682 fetch_texel_1d_rgb565, /* FetchTexel1D */
683 fetch_texel_2d_rgb565, /* FetchTexel2D */
684 fetch_texel_3d_rgb565, /* FetchTexel3D */
685 fetch_texel_1d_f_rgb565, /* FetchTexel1Df */
686 fetch_texel_2d_f_rgb565, /* FetchTexel2Df */
687 fetch_texel_3d_f_rgb565, /* FetchTexel3Df */
688 };
689
690 const struct gl_texture_format _mesa_texformat_bgr565 = {
691 MESA_FORMAT_BGR565, /* MesaFormat */
692 GL_RGB, /* BaseFormat */
693 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
694 5, /* RedBits */
695 6, /* GreenBits */
696 5, /* BlueBits */
697 0, /* AlphaBits */
698 0, /* LuminanceBits */
699 0, /* IntensityBits */
700 0, /* IndexBits */
701 0, /* DepthBits */
702 2, /* TexelBytes */
703 _mesa_texstore_bgr565, /* StoreTexImageFunc */
704 fetch_texel_1d_bgr565, /* FetchTexel1D */
705 fetch_texel_2d_bgr565, /* FetchTexel2D */
706 fetch_texel_3d_bgr565, /* FetchTexel3D */
707 fetch_texel_1d_f_bgr565, /* FetchTexel1Df */
708 fetch_texel_2d_f_bgr565, /* FetchTexel2Df */
709 fetch_texel_3d_f_bgr565, /* FetchTexel3Df */
710 };
711
712 const struct gl_texture_format _mesa_texformat_argb4444 = {
713 MESA_FORMAT_ARGB4444, /* MesaFormat */
714 GL_RGBA, /* BaseFormat */
715 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
716 4, /* RedBits */
717 4, /* GreenBits */
718 4, /* BlueBits */
719 4, /* AlphaBits */
720 0, /* LuminanceBits */
721 0, /* IntensityBits */
722 0, /* IndexBits */
723 0, /* DepthBits */
724 2, /* TexelBytes */
725 _mesa_texstore_argb4444, /* StoreTexImageFunc */
726 fetch_texel_1d_argb4444, /* FetchTexel1D */
727 fetch_texel_2d_argb4444, /* FetchTexel2D */
728 fetch_texel_3d_argb4444, /* FetchTexel3D */
729 fetch_texel_1d_f_argb4444, /* FetchTexel1Df */
730 fetch_texel_2d_f_argb4444, /* FetchTexel2Df */
731 fetch_texel_3d_f_argb4444, /* FetchTexel3Df */
732 };
733
734 const struct gl_texture_format _mesa_texformat_bgra4444 = {
735 MESA_FORMAT_BGRA4444, /* MesaFormat */
736 GL_RGBA, /* BaseFormat */
737 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
738 4, /* RedBits */
739 4, /* GreenBits */
740 4, /* BlueBits */
741 4, /* AlphaBits */
742 0, /* LuminanceBits */
743 0, /* IntensityBits */
744 0, /* IndexBits */
745 0, /* DepthBits */
746 2, /* TexelBytes */
747 _mesa_texstore_bgra4444, /* StoreTexImageFunc */
748 fetch_texel_1d_bgra4444, /* FetchTexel1D */
749 fetch_texel_2d_bgra4444, /* FetchTexel2D */
750 fetch_texel_3d_bgra4444, /* FetchTexel3D */
751 fetch_texel_1d_f_bgra4444, /* FetchTexel1Df */
752 fetch_texel_2d_f_bgra4444, /* FetchTexel2Df */
753 fetch_texel_3d_f_bgra4444, /* FetchTexel3Df */
754 };
755
756 const struct gl_texture_format _mesa_texformat_argb1555 = {
757 MESA_FORMAT_ARGB1555, /* MesaFormat */
758 GL_RGBA, /* BaseFormat */
759 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
760 5, /* RedBits */
761 5, /* GreenBits */
762 5, /* BlueBits */
763 1, /* AlphaBits */
764 0, /* LuminanceBits */
765 0, /* IntensityBits */
766 0, /* IndexBits */
767 0, /* DepthBits */
768 2, /* TexelBytes */
769 _mesa_texstore_argb1555, /* StoreTexImageFunc */
770 fetch_texel_1d_argb1555, /* FetchTexel1D */
771 fetch_texel_2d_argb1555, /* FetchTexel2D */
772 fetch_texel_3d_argb1555, /* FetchTexel3D */
773 fetch_texel_1d_f_argb1555, /* FetchTexel1Df */
774 fetch_texel_2d_f_argb1555, /* FetchTexel2Df */
775 fetch_texel_3d_f_argb1555, /* FetchTexel3Df */
776 };
777
778 const struct gl_texture_format _mesa_texformat_bgra5551 = {
779 MESA_FORMAT_BGRA5551, /* MesaFormat */
780 GL_RGBA, /* BaseFormat */
781 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
782 5, /* RedBits */
783 5, /* GreenBits */
784 5, /* BlueBits */
785 1, /* AlphaBits */
786 0, /* LuminanceBits */
787 0, /* IntensityBits */
788 0, /* IndexBits */
789 0, /* DepthBits */
790 2, /* TexelBytes */
791 _mesa_texstore_bgra5551, /* StoreTexImageFunc */
792 fetch_texel_1d_bgra5551, /* FetchTexel1D */
793 fetch_texel_2d_bgra5551, /* FetchTexel2D */
794 fetch_texel_3d_bgra5551, /* FetchTexel3D */
795 fetch_texel_1d_f_bgra5551, /* FetchTexel1Df */
796 fetch_texel_2d_f_bgra5551, /* FetchTexel2Df */
797 fetch_texel_3d_f_bgra5551, /* FetchTexel3Df */
798 };
799
800 const struct gl_texture_format _mesa_texformat_al88 = {
801 MESA_FORMAT_AL88, /* MesaFormat */
802 GL_LUMINANCE_ALPHA, /* BaseFormat */
803 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
804 0, /* RedBits */
805 0, /* GreenBits */
806 0, /* BlueBits */
807 8, /* AlphaBits */
808 8, /* LuminanceBits */
809 0, /* IntensityBits */
810 0, /* IndexBits */
811 0, /* DepthBits */
812 2, /* TexelBytes */
813 _mesa_texstore_al88, /* StoreTexImageFunc */
814 fetch_texel_1d_al88, /* FetchTexel1D */
815 fetch_texel_2d_al88, /* FetchTexel2D */
816 fetch_texel_3d_al88, /* FetchTexel3D */
817 fetch_texel_1d_f_al88, /* FetchTexel1Df */
818 fetch_texel_2d_f_al88, /* FetchTexel2Df */
819 fetch_texel_3d_f_al88, /* FetchTexel3Df */
820 };
821
822 const struct gl_texture_format _mesa_texformat_la88 = {
823 MESA_FORMAT_LA88, /* MesaFormat */
824 GL_LUMINANCE_ALPHA, /* BaseFormat */
825 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
826 0, /* RedBits */
827 0, /* GreenBits */
828 0, /* BlueBits */
829 8, /* AlphaBits */
830 8, /* LuminanceBits */
831 0, /* IntensityBits */
832 0, /* IndexBits */
833 0, /* DepthBits */
834 2, /* TexelBytes */
835 _mesa_texstore_la88, /* StoreTexImageFunc */
836 fetch_texel_1d_la88, /* FetchTexel1D */
837 fetch_texel_2d_la88, /* FetchTexel2D */
838 fetch_texel_3d_la88, /* FetchTexel3D */
839 fetch_texel_1d_f_la88, /* FetchTexel1Df */
840 fetch_texel_2d_f_la88, /* FetchTexel2Df */
841 fetch_texel_3d_f_la88, /* FetchTexel3Df */
842 };
843
844 const struct gl_texture_format _mesa_texformat_rgb332 = {
845 MESA_FORMAT_RGB332, /* MesaFormat */
846 GL_RGB, /* BaseFormat */
847 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
848 3, /* RedBits */
849 3, /* GreenBits */
850 2, /* BlueBits */
851 0, /* AlphaBits */
852 0, /* LuminanceBits */
853 0, /* IntensityBits */
854 0, /* IndexBits */
855 0, /* DepthBits */
856 1, /* TexelBytes */
857 _mesa_texstore_rgb332, /* StoreTexImageFunc */
858 fetch_texel_1d_rgb332, /* FetchTexel1D */
859 fetch_texel_2d_rgb332, /* FetchTexel2D */
860 fetch_texel_3d_rgb332, /* FetchTexel3D */
861 fetch_texel_1d_f_rgb332, /* FetchTexel1Df */
862 fetch_texel_2d_f_rgb332, /* FetchTexel2Df */
863 fetch_texel_3d_f_rgb332, /* FetchTexel3Df */
864 };
865
866 const struct gl_texture_format _mesa_texformat_a8 = {
867 MESA_FORMAT_A8, /* MesaFormat */
868 GL_ALPHA, /* BaseFormat */
869 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
870 0, /* RedBits */
871 0, /* GreenBits */
872 0, /* BlueBits */
873 8, /* AlphaBits */
874 0, /* LuminanceBits */
875 0, /* IntensityBits */
876 0, /* IndexBits */
877 0, /* DepthBits */
878 1, /* TexelBytes */
879 _mesa_texstore_a8, /* StoreTexImageFunc */
880 fetch_texel_1d_a8, /* FetchTexel1D */
881 fetch_texel_2d_a8, /* FetchTexel2D */
882 fetch_texel_3d_a8, /* FetchTexel3D */
883 fetch_texel_1d_f_a8, /* FetchTexel1Df */
884 fetch_texel_2d_f_a8, /* FetchTexel2Df */
885 fetch_texel_3d_f_a8, /* FetchTexel3Df */
886 };
887
888 const struct gl_texture_format _mesa_texformat_l8 = {
889 MESA_FORMAT_L8, /* MesaFormat */
890 GL_LUMINANCE, /* BaseFormat */
891 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
892 0, /* RedBits */
893 0, /* GreenBits */
894 0, /* BlueBits */
895 0, /* AlphaBits */
896 8, /* LuminanceBits */
897 0, /* IntensityBits */
898 0, /* IndexBits */
899 0, /* DepthBits */
900 1, /* TexelBytes */
901 _mesa_texstore_a8,/*yes*/ /* StoreTexImageFunc */
902 fetch_texel_1d_l8, /* FetchTexel1D */
903 fetch_texel_2d_l8, /* FetchTexel2D */
904 fetch_texel_3d_l8, /* FetchTexel3D */
905 fetch_texel_1d_f_l8, /* FetchTexel1Df */
906 fetch_texel_2d_f_l8, /* FetchTexel2Df */
907 fetch_texel_3d_f_l8, /* FetchTexel3Df */
908 };
909
910 const struct gl_texture_format _mesa_texformat_i8 = {
911 MESA_FORMAT_I8, /* MesaFormat */
912 GL_INTENSITY, /* BaseFormat */
913 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
914 0, /* RedBits */
915 0, /* GreenBits */
916 0, /* BlueBits */
917 0, /* AlphaBits */
918 0, /* LuminanceBits */
919 8, /* IntensityBits */
920 0, /* IndexBits */
921 0, /* DepthBits */
922 1, /* TexelBytes */
923 _mesa_texstore_a8,/*yes*/ /* StoreTexImageFunc */
924 fetch_texel_1d_i8, /* FetchTexel1D */
925 fetch_texel_2d_i8, /* FetchTexel2D */
926 fetch_texel_3d_i8, /* FetchTexel3D */
927 fetch_texel_1d_f_i8, /* FetchTexel1Df */
928 fetch_texel_2d_f_i8, /* FetchTexel2Df */
929 fetch_texel_3d_f_i8, /* FetchTexel3Df */
930 };
931
932 const struct gl_texture_format _mesa_texformat_ci8 = {
933 MESA_FORMAT_CI8, /* MesaFormat */
934 GL_COLOR_INDEX, /* BaseFormat */
935 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
936 0, /* RedBits */
937 0, /* GreenBits */
938 0, /* BlueBits */
939 0, /* AlphaBits */
940 0, /* LuminanceBits */
941 0, /* IntensityBits */
942 8, /* IndexBits */
943 0, /* DepthBits */
944 1, /* TexelBytes */
945 _mesa_texstore_ci8, /* StoreTexImageFunc */
946 fetch_texel_1d_ci8, /* FetchTexel1D */
947 fetch_texel_2d_ci8, /* FetchTexel2D */
948 fetch_texel_3d_ci8, /* FetchTexel3D */
949 fetch_texel_1d_f_ci8, /* FetchTexel1Df */
950 fetch_texel_2d_f_ci8, /* FetchTexel2Df */
951 fetch_texel_3d_f_ci8, /* FetchTexel3Df */
952 };
953
954 const struct gl_texture_format _mesa_texformat_ycbcr = {
955 MESA_FORMAT_YCBCR, /* MesaFormat */
956 GL_YCBCR_MESA, /* BaseFormat */
957 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
958 0, /* RedBits */
959 0, /* GreenBits */
960 0, /* BlueBits */
961 0, /* AlphaBits */
962 0, /* LuminanceBits */
963 0, /* IntensityBits */
964 0, /* IndexBits */
965 0, /* DepthBits */
966 2, /* TexelBytes */
967 _mesa_texstore_ycbcr, /* StoreTexImageFunc */
968 fetch_texel_1d_ycbcr, /* FetchTexel1D */
969 fetch_texel_2d_ycbcr, /* FetchTexel2D */
970 fetch_texel_3d_ycbcr, /* FetchTexel3D */
971 fetch_texel_1d_f_ycbcr, /* FetchTexel1Df */
972 fetch_texel_2d_f_ycbcr, /* FetchTexel2Df */
973 fetch_texel_3d_f_ycbcr, /* FetchTexel3Df */
974 };
975
976 const struct gl_texture_format _mesa_texformat_ycbcr_rev = {
977 MESA_FORMAT_YCBCR_REV, /* MesaFormat */
978 GL_YCBCR_MESA, /* BaseFormat */
979 GL_UNSIGNED_NORMALIZED_ARB, /* DataType */
980 0, /* RedBits */
981 0, /* GreenBits */
982 0, /* BlueBits */
983 0, /* AlphaBits */
984 0, /* LuminanceBits */
985 0, /* IntensityBits */
986 0, /* IndexBits */
987 0, /* DepthBits */
988 2, /* TexelBytes */
989 _mesa_texstore_ycbcr, /* StoreTexImageFunc */
990 fetch_texel_1d_ycbcr_rev, /* FetchTexel1D */
991 fetch_texel_2d_ycbcr_rev, /* FetchTexel2D */
992 fetch_texel_3d_ycbcr_rev, /* FetchTexel3D */
993 fetch_texel_1d_f_ycbcr_rev, /* FetchTexel1Df */
994 fetch_texel_2d_f_ycbcr_rev, /* FetchTexel2Df */
995 fetch_texel_3d_f_ycbcr_rev, /* FetchTexel3Df */
996 };
997
998 /*@}*/
999
1000
1001 /***************************************************************/
1002 /** \name Null format (useful for proxy textures) */
1003 /*@{*/
1004
1005 const struct gl_texture_format _mesa_null_texformat = {
1006 -1, /* MesaFormat */
1007 0, /* BaseFormat */
1008 GL_NONE, /* DataType */
1009 0, /* RedBits */
1010 0, /* GreenBits */
1011 0, /* BlueBits */
1012 0, /* AlphaBits */
1013 0, /* LuminanceBits */
1014 0, /* IntensityBits */
1015 0, /* IndexBits */
1016 0, /* DepthBits */
1017 0, /* TexelBytes */
1018 NULL, /* StoreTexImageFunc */
1019 fetch_null_texel, /* FetchTexel1D */
1020 fetch_null_texel, /* FetchTexel2D */
1021 fetch_null_texel, /* FetchTexel3D */
1022 fetch_null_texelf, /* FetchTexel1Df */
1023 fetch_null_texelf, /* FetchTexel2Df */
1024 fetch_null_texelf, /* FetchTexel3Df */
1025 };
1026
1027 /*@}*/
1028
1029
1030 /**
1031 * Choose an appropriate texture format given the format, type and
1032 * internalFormat parameters passed to glTexImage().
1033 *
1034 * \param ctx the GL context.
1035 * \param internalFormat user's prefered internal texture format.
1036 * \param format incoming image pixel format.
1037 * \param type incoming image data type.
1038 *
1039 * \return a pointer to a gl_texture_format object which describes the
1040 * choosen texture format, or NULL on failure.
1041 *
1042 * This is called via dd_function_table::ChooseTextureFormat. Hardware drivers
1043 * will typically override this function with a specialized version.
1044 */
1045 const struct gl_texture_format *
1046 _mesa_choose_tex_format( GLcontext *ctx, GLint internalFormat,
1047 GLenum format, GLenum type )
1048 {
1049 (void) format;
1050 (void) type;
1051
1052 switch (internalFormat) {
1053 /* RGBA formats */
1054 case 4:
1055 case GL_RGBA:
1056 case GL_RGB10_A2:
1057 case GL_RGBA12:
1058 case GL_RGBA16:
1059 return &_mesa_texformat_rgba;
1060 case GL_RGBA8:
1061 return &_mesa_texformat_rgba8888;
1062 case GL_RGB5_A1:
1063 return &_mesa_texformat_argb1555;
1064 case GL_RGBA2:
1065 case GL_RGBA4:
1066 return &_mesa_texformat_argb4444;
1067
1068 /* RGB formats */
1069 case 3:
1070 case GL_RGB:
1071 case GL_RGB8:
1072 case GL_RGB10:
1073 case GL_RGB12:
1074 case GL_RGB16:
1075 return &_mesa_texformat_rgb;
1076 case GL_R3_G3_B2:
1077 return &_mesa_texformat_rgb332;
1078 case GL_RGB4:
1079 case GL_RGB5:
1080 return &_mesa_texformat_rgb565;
1081
1082 /* Alpha formats */
1083 case GL_ALPHA:
1084 case GL_ALPHA4:
1085 case GL_ALPHA12:
1086 case GL_ALPHA16:
1087 return &_mesa_texformat_alpha;
1088 case GL_ALPHA8:
1089 return &_mesa_texformat_a8;
1090
1091 /* Luminance formats */
1092 case 1:
1093 case GL_LUMINANCE:
1094 case GL_LUMINANCE4:
1095 case GL_LUMINANCE12:
1096 case GL_LUMINANCE16:
1097 return &_mesa_texformat_luminance;
1098 case GL_LUMINANCE8:
1099 return &_mesa_texformat_l8;
1100
1101 /* Luminance/Alpha formats */
1102 case 2:
1103 case GL_LUMINANCE_ALPHA:
1104 case GL_LUMINANCE4_ALPHA4:
1105 case GL_LUMINANCE6_ALPHA2:
1106 case GL_LUMINANCE12_ALPHA4:
1107 case GL_LUMINANCE12_ALPHA12:
1108 case GL_LUMINANCE16_ALPHA16:
1109 return &_mesa_texformat_luminance_alpha;
1110 case GL_LUMINANCE8_ALPHA8:
1111 return &_mesa_texformat_al88;
1112
1113 case GL_INTENSITY:
1114 case GL_INTENSITY4:
1115 case GL_INTENSITY12:
1116 case GL_INTENSITY16:
1117 return &_mesa_texformat_intensity;
1118 case GL_INTENSITY8:
1119 return &_mesa_texformat_i8;
1120
1121 case GL_COLOR_INDEX:
1122 case GL_COLOR_INDEX1_EXT:
1123 case GL_COLOR_INDEX2_EXT:
1124 case GL_COLOR_INDEX4_EXT:
1125 case GL_COLOR_INDEX12_EXT:
1126 case GL_COLOR_INDEX16_EXT:
1127 case GL_COLOR_INDEX8_EXT:
1128 return &_mesa_texformat_ci8;
1129
1130 default:
1131 ; /* fallthrough */
1132 }
1133
1134 if (ctx->Extensions.SGIX_depth_texture) {
1135 switch (internalFormat) {
1136 case GL_DEPTH_COMPONENT:
1137 case GL_DEPTH_COMPONENT24_SGIX:
1138 case GL_DEPTH_COMPONENT32_SGIX:
1139 return &_mesa_texformat_depth_component_float32;
1140 case GL_DEPTH_COMPONENT16_SGIX:
1141 return &_mesa_texformat_depth_component16;
1142 default:
1143 ; /* fallthrough */
1144 }
1145 }
1146
1147 if (ctx->Extensions.ARB_texture_compression) {
1148 switch (internalFormat) {
1149 case GL_COMPRESSED_ALPHA_ARB:
1150 return &_mesa_texformat_alpha;
1151 case GL_COMPRESSED_LUMINANCE_ARB:
1152 return &_mesa_texformat_luminance;
1153 case GL_COMPRESSED_LUMINANCE_ALPHA_ARB:
1154 return &_mesa_texformat_luminance_alpha;
1155 case GL_COMPRESSED_INTENSITY_ARB:
1156 return &_mesa_texformat_intensity;
1157 case GL_COMPRESSED_RGB_ARB:
1158 if (ctx->Extensions.TDFX_texture_compression_FXT1)
1159 return &_mesa_texformat_rgb_fxt1;
1160 else if (ctx->Extensions.EXT_texture_compression_s3tc ||
1161 ctx->Extensions.S3_s3tc)
1162 return &_mesa_texformat_rgb_dxt1;
1163 else
1164 return &_mesa_texformat_rgb;
1165 case GL_COMPRESSED_RGBA_ARB:
1166 if (ctx->Extensions.TDFX_texture_compression_FXT1)
1167 return &_mesa_texformat_rgba_fxt1;
1168 else if (ctx->Extensions.EXT_texture_compression_s3tc ||
1169 ctx->Extensions.S3_s3tc)
1170 return &_mesa_texformat_rgba_dxt3; /* Not rgba_dxt1, see spec */
1171 else
1172 return &_mesa_texformat_rgba;
1173 default:
1174 ; /* fallthrough */
1175 }
1176 }
1177
1178 if (ctx->Extensions.MESA_ycbcr_texture) {
1179 if (internalFormat == GL_YCBCR_MESA) {
1180 if (type == GL_UNSIGNED_SHORT_8_8_MESA)
1181 return &_mesa_texformat_ycbcr;
1182 else
1183 return &_mesa_texformat_ycbcr_rev;
1184 }
1185 }
1186
1187 if (ctx->Extensions.TDFX_texture_compression_FXT1) {
1188 switch (internalFormat) {
1189 case GL_COMPRESSED_RGB_FXT1_3DFX:
1190 return &_mesa_texformat_rgb_fxt1;
1191 case GL_COMPRESSED_RGBA_FXT1_3DFX:
1192 return &_mesa_texformat_rgba_fxt1;
1193 default:
1194 ; /* fallthrough */
1195 }
1196 }
1197
1198 if (ctx->Extensions.EXT_texture_compression_s3tc) {
1199 switch (internalFormat) {
1200 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
1201 return &_mesa_texformat_rgb_dxt1;
1202 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
1203 return &_mesa_texformat_rgba_dxt1;
1204 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
1205 return &_mesa_texformat_rgba_dxt3;
1206 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
1207 return &_mesa_texformat_rgba_dxt5;
1208 default:
1209 ; /* fallthrough */
1210 }
1211 }
1212
1213 if (ctx->Extensions.S3_s3tc) {
1214 switch (internalFormat) {
1215 case GL_RGB_S3TC:
1216 case GL_RGB4_S3TC:
1217 return &_mesa_texformat_rgb_dxt1;
1218 case GL_RGBA_S3TC:
1219 case GL_RGBA4_S3TC:
1220 return &_mesa_texformat_rgba_dxt3;
1221 default:
1222 ; /* fallthrough */
1223 }
1224 }
1225
1226 if (ctx->Extensions.ARB_texture_float) {
1227 switch (internalFormat) {
1228 case GL_ALPHA16F_ARB:
1229 return &_mesa_texformat_alpha_float16;
1230 case GL_ALPHA32F_ARB:
1231 return &_mesa_texformat_alpha_float32;
1232 case GL_LUMINANCE16F_ARB:
1233 return &_mesa_texformat_luminance_float16;
1234 case GL_LUMINANCE32F_ARB:
1235 return &_mesa_texformat_luminance_float32;
1236 case GL_LUMINANCE_ALPHA16F_ARB:
1237 return &_mesa_texformat_luminance_alpha_float16;
1238 case GL_LUMINANCE_ALPHA32F_ARB:
1239 return &_mesa_texformat_luminance_alpha_float32;
1240 case GL_INTENSITY16F_ARB:
1241 return &_mesa_texformat_intensity_float16;
1242 case GL_INTENSITY32F_ARB:
1243 return &_mesa_texformat_intensity_float32;
1244 case GL_RGB16F_ARB:
1245 return &_mesa_texformat_rgb_float16;
1246 case GL_RGB32F_ARB:
1247 return &_mesa_texformat_rgb_float32;
1248 case GL_RGBA16F_ARB:
1249 return &_mesa_texformat_rgba_float16;
1250 case GL_RGBA32F_ARB:
1251 return &_mesa_texformat_rgba_float32;
1252 default:
1253 ; /* fallthrough */
1254 }
1255 }
1256
1257 _mesa_problem(ctx, "unexpected format in _mesa_choose_tex_format()");
1258 return NULL;
1259 }