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[mesa.git] / src / mesa / state_tracker / st_format.c
1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * Copyright (c) 2008-2010 VMware, Inc.
5 * 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
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29
30 /**
31 * Mesa / Gallium format conversion and format selection code.
32 * \author Brian Paul
33 */
34
35 #include "main/imports.h"
36 #include "main/context.h"
37 #include "main/texstore.h"
38 #include "main/image.h"
39 #include "main/macros.h"
40 #include "main/mfeatures.h"
41
42 #include "pipe/p_context.h"
43 #include "pipe/p_defines.h"
44 #include "pipe/p_screen.h"
45 #include "util/u_format.h"
46 #include "st_context.h"
47 #include "st_format.h"
48
49
50 static GLuint
51 format_max_bits(enum pipe_format format)
52 {
53 GLuint size = util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 0);
54
55 size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 1));
56 size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 2));
57 size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3));
58 size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0));
59 size = MAX2(size, util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1));
60 return size;
61 }
62
63
64 /**
65 * Return basic GL datatype for the given gallium format.
66 */
67 GLenum
68 st_format_datatype(enum pipe_format format)
69 {
70 const struct util_format_description *desc;
71 int i;
72
73 desc = util_format_description(format);
74 assert(desc);
75
76 /* Find the first non-VOID channel. */
77 for (i = 0; i < 4; i++) {
78 if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
79 break;
80 }
81 }
82
83 if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) {
84 if (format == PIPE_FORMAT_B5G5R5A1_UNORM ||
85 format == PIPE_FORMAT_B5G6R5_UNORM) {
86 return GL_UNSIGNED_SHORT;
87 }
88 else if (format == PIPE_FORMAT_R11G11B10_FLOAT ||
89 format == PIPE_FORMAT_R9G9B9E5_FLOAT) {
90 return GL_FLOAT;
91 }
92 else if (format == PIPE_FORMAT_Z24_UNORM_S8_UINT ||
93 format == PIPE_FORMAT_S8_UINT_Z24_UNORM ||
94 format == PIPE_FORMAT_Z24X8_UNORM ||
95 format == PIPE_FORMAT_X8Z24_UNORM) {
96 return GL_UNSIGNED_INT_24_8;
97 }
98 else if (format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
99 return GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
100 }
101 else {
102 const GLuint size = format_max_bits(format);
103
104 assert(i < 4);
105 if (i == 4)
106 return GL_NONE;
107
108 if (size == 8) {
109 if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
110 return GL_UNSIGNED_BYTE;
111 else
112 return GL_BYTE;
113 }
114 else if (size == 16) {
115 if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
116 return GL_HALF_FLOAT;
117 if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
118 return GL_UNSIGNED_SHORT;
119 else
120 return GL_SHORT;
121 }
122 else if (size <= 32) {
123 if (desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT)
124 return GL_FLOAT;
125 if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED)
126 return GL_UNSIGNED_INT;
127 else
128 return GL_INT;
129 }
130 else {
131 assert(size == 64);
132 assert(desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT);
133 return GL_DOUBLE;
134 }
135 }
136 }
137 else if (format == PIPE_FORMAT_UYVY) {
138 return GL_UNSIGNED_SHORT;
139 }
140 else if (format == PIPE_FORMAT_YUYV) {
141 return GL_UNSIGNED_SHORT;
142 }
143 else {
144 /* probably a compressed format, unsupported anyway */
145 return GL_NONE;
146 }
147 }
148
149
150 /**
151 * Translate Mesa format to Gallium format.
152 */
153 enum pipe_format
154 st_mesa_format_to_pipe_format(gl_format mesaFormat)
155 {
156 switch (mesaFormat) {
157 case MESA_FORMAT_RGBA8888:
158 return PIPE_FORMAT_A8B8G8R8_UNORM;
159 case MESA_FORMAT_RGBA8888_REV:
160 return PIPE_FORMAT_R8G8B8A8_UNORM;
161 case MESA_FORMAT_ARGB8888:
162 return PIPE_FORMAT_B8G8R8A8_UNORM;
163 case MESA_FORMAT_ARGB8888_REV:
164 return PIPE_FORMAT_A8R8G8B8_UNORM;
165 case MESA_FORMAT_RGBX8888:
166 return PIPE_FORMAT_X8B8G8R8_UNORM;
167 case MESA_FORMAT_RGBX8888_REV:
168 return PIPE_FORMAT_R8G8B8X8_UNORM;
169 case MESA_FORMAT_XRGB8888:
170 return PIPE_FORMAT_B8G8R8X8_UNORM;
171 case MESA_FORMAT_XRGB8888_REV:
172 return PIPE_FORMAT_X8R8G8B8_UNORM;
173 case MESA_FORMAT_ARGB1555:
174 return PIPE_FORMAT_B5G5R5A1_UNORM;
175 case MESA_FORMAT_ARGB4444:
176 return PIPE_FORMAT_B4G4R4A4_UNORM;
177 case MESA_FORMAT_RGB565:
178 return PIPE_FORMAT_B5G6R5_UNORM;
179 case MESA_FORMAT_RGB332:
180 return PIPE_FORMAT_B2G3R3_UNORM;
181 case MESA_FORMAT_ARGB2101010:
182 return PIPE_FORMAT_B10G10R10A2_UNORM;
183 case MESA_FORMAT_AL44:
184 return PIPE_FORMAT_L4A4_UNORM;
185 case MESA_FORMAT_AL88:
186 return PIPE_FORMAT_L8A8_UNORM;
187 case MESA_FORMAT_AL1616:
188 return PIPE_FORMAT_L16A16_UNORM;
189 case MESA_FORMAT_A8:
190 return PIPE_FORMAT_A8_UNORM;
191 case MESA_FORMAT_A16:
192 return PIPE_FORMAT_A16_UNORM;
193 case MESA_FORMAT_L8:
194 return PIPE_FORMAT_L8_UNORM;
195 case MESA_FORMAT_L16:
196 return PIPE_FORMAT_L16_UNORM;
197 case MESA_FORMAT_I8:
198 return PIPE_FORMAT_I8_UNORM;
199 case MESA_FORMAT_I16:
200 return PIPE_FORMAT_I16_UNORM;
201 case MESA_FORMAT_Z16:
202 return PIPE_FORMAT_Z16_UNORM;
203 case MESA_FORMAT_Z32:
204 return PIPE_FORMAT_Z32_UNORM;
205 case MESA_FORMAT_Z24_S8:
206 return PIPE_FORMAT_S8_UINT_Z24_UNORM;
207 case MESA_FORMAT_S8_Z24:
208 return PIPE_FORMAT_Z24_UNORM_S8_UINT;
209 case MESA_FORMAT_Z24_X8:
210 return PIPE_FORMAT_X8Z24_UNORM;
211 case MESA_FORMAT_X8_Z24:
212 return PIPE_FORMAT_Z24X8_UNORM;
213 case MESA_FORMAT_S8:
214 return PIPE_FORMAT_S8_UINT;
215 case MESA_FORMAT_Z32_FLOAT:
216 return PIPE_FORMAT_Z32_FLOAT;
217 case MESA_FORMAT_Z32_FLOAT_X24S8:
218 return PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
219 case MESA_FORMAT_YCBCR:
220 return PIPE_FORMAT_UYVY;
221 #if FEATURE_texture_s3tc
222 case MESA_FORMAT_RGB_DXT1:
223 return PIPE_FORMAT_DXT1_RGB;
224 case MESA_FORMAT_RGBA_DXT1:
225 return PIPE_FORMAT_DXT1_RGBA;
226 case MESA_FORMAT_RGBA_DXT3:
227 return PIPE_FORMAT_DXT3_RGBA;
228 case MESA_FORMAT_RGBA_DXT5:
229 return PIPE_FORMAT_DXT5_RGBA;
230 #if FEATURE_EXT_texture_sRGB
231 case MESA_FORMAT_SRGB_DXT1:
232 return PIPE_FORMAT_DXT1_SRGB;
233 case MESA_FORMAT_SRGBA_DXT1:
234 return PIPE_FORMAT_DXT1_SRGBA;
235 case MESA_FORMAT_SRGBA_DXT3:
236 return PIPE_FORMAT_DXT3_SRGBA;
237 case MESA_FORMAT_SRGBA_DXT5:
238 return PIPE_FORMAT_DXT5_SRGBA;
239 #endif
240 #endif
241 #if FEATURE_EXT_texture_sRGB
242 case MESA_FORMAT_SLA8:
243 return PIPE_FORMAT_L8A8_SRGB;
244 case MESA_FORMAT_SL8:
245 return PIPE_FORMAT_L8_SRGB;
246 case MESA_FORMAT_SRGB8:
247 return PIPE_FORMAT_R8G8B8_SRGB;
248 case MESA_FORMAT_SRGBA8:
249 return PIPE_FORMAT_A8B8G8R8_SRGB;
250 case MESA_FORMAT_SARGB8:
251 return PIPE_FORMAT_B8G8R8A8_SRGB;
252 #endif
253 case MESA_FORMAT_RGBA_FLOAT32:
254 return PIPE_FORMAT_R32G32B32A32_FLOAT;
255 case MESA_FORMAT_RGBA_FLOAT16:
256 return PIPE_FORMAT_R16G16B16A16_FLOAT;
257 case MESA_FORMAT_RGB_FLOAT32:
258 return PIPE_FORMAT_R32G32B32_FLOAT;
259 case MESA_FORMAT_RGB_FLOAT16:
260 return PIPE_FORMAT_R16G16B16_FLOAT;
261 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
262 return PIPE_FORMAT_L32A32_FLOAT;
263 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
264 return PIPE_FORMAT_L16A16_FLOAT;
265 case MESA_FORMAT_LUMINANCE_FLOAT32:
266 return PIPE_FORMAT_L32_FLOAT;
267 case MESA_FORMAT_LUMINANCE_FLOAT16:
268 return PIPE_FORMAT_L16_FLOAT;
269 case MESA_FORMAT_ALPHA_FLOAT32:
270 return PIPE_FORMAT_A32_FLOAT;
271 case MESA_FORMAT_ALPHA_FLOAT16:
272 return PIPE_FORMAT_A16_FLOAT;
273 case MESA_FORMAT_INTENSITY_FLOAT32:
274 return PIPE_FORMAT_I32_FLOAT;
275 case MESA_FORMAT_INTENSITY_FLOAT16:
276 return PIPE_FORMAT_I16_FLOAT;
277 case MESA_FORMAT_R_FLOAT32:
278 return PIPE_FORMAT_R32_FLOAT;
279 case MESA_FORMAT_R_FLOAT16:
280 return PIPE_FORMAT_R16_FLOAT;
281 case MESA_FORMAT_RG_FLOAT32:
282 return PIPE_FORMAT_R32G32_FLOAT;
283 case MESA_FORMAT_RG_FLOAT16:
284 return PIPE_FORMAT_R16G16_FLOAT;
285
286 case MESA_FORMAT_R8:
287 return PIPE_FORMAT_R8_UNORM;
288 case MESA_FORMAT_R16:
289 return PIPE_FORMAT_R16_UNORM;
290 case MESA_FORMAT_RG88:
291 return PIPE_FORMAT_R8G8_UNORM;
292 case MESA_FORMAT_RG1616:
293 return PIPE_FORMAT_R16G16_UNORM;
294 case MESA_FORMAT_RGBA_16:
295 return PIPE_FORMAT_R16G16B16A16_UNORM;
296
297 /* signed int formats */
298 case MESA_FORMAT_ALPHA_UINT8:
299 return PIPE_FORMAT_A8_UINT;
300 case MESA_FORMAT_ALPHA_UINT16:
301 return PIPE_FORMAT_A16_UINT;
302 case MESA_FORMAT_ALPHA_UINT32:
303 return PIPE_FORMAT_A32_UINT;
304
305 case MESA_FORMAT_ALPHA_INT8:
306 return PIPE_FORMAT_A8_SINT;
307 case MESA_FORMAT_ALPHA_INT16:
308 return PIPE_FORMAT_A16_SINT;
309 case MESA_FORMAT_ALPHA_INT32:
310 return PIPE_FORMAT_A32_SINT;
311
312 case MESA_FORMAT_INTENSITY_UINT8:
313 return PIPE_FORMAT_I8_UINT;
314 case MESA_FORMAT_INTENSITY_UINT16:
315 return PIPE_FORMAT_I16_UINT;
316 case MESA_FORMAT_INTENSITY_UINT32:
317 return PIPE_FORMAT_I32_UINT;
318
319 case MESA_FORMAT_INTENSITY_INT8:
320 return PIPE_FORMAT_I8_SINT;
321 case MESA_FORMAT_INTENSITY_INT16:
322 return PIPE_FORMAT_I16_SINT;
323 case MESA_FORMAT_INTENSITY_INT32:
324 return PIPE_FORMAT_I32_SINT;
325
326 case MESA_FORMAT_LUMINANCE_UINT8:
327 return PIPE_FORMAT_L8_UINT;
328 case MESA_FORMAT_LUMINANCE_UINT16:
329 return PIPE_FORMAT_L16_UINT;
330 case MESA_FORMAT_LUMINANCE_UINT32:
331 return PIPE_FORMAT_L32_UINT;
332
333 case MESA_FORMAT_LUMINANCE_INT8:
334 return PIPE_FORMAT_L8_SINT;
335 case MESA_FORMAT_LUMINANCE_INT16:
336 return PIPE_FORMAT_L16_SINT;
337 case MESA_FORMAT_LUMINANCE_INT32:
338 return PIPE_FORMAT_L32_SINT;
339
340 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
341 return PIPE_FORMAT_L8A8_UINT;
342 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
343 return PIPE_FORMAT_L16A16_UINT;
344 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
345 return PIPE_FORMAT_L32A32_UINT;
346
347 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
348 return PIPE_FORMAT_L8A8_SINT;
349 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
350 return PIPE_FORMAT_L16A16_SINT;
351 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
352 return PIPE_FORMAT_L32A32_SINT;
353
354 case MESA_FORMAT_R_INT8:
355 return PIPE_FORMAT_R8_SINT;
356 case MESA_FORMAT_RG_INT8:
357 return PIPE_FORMAT_R8G8_SINT;
358 case MESA_FORMAT_RGB_INT8:
359 return PIPE_FORMAT_R8G8B8_SINT;
360 case MESA_FORMAT_RGBA_INT8:
361 return PIPE_FORMAT_R8G8B8A8_SINT;
362 case MESA_FORMAT_R_INT16:
363 return PIPE_FORMAT_R16_SINT;
364 case MESA_FORMAT_RG_INT16:
365 return PIPE_FORMAT_R16G16_SINT;
366 case MESA_FORMAT_RGB_INT16:
367 return PIPE_FORMAT_R16G16B16_SINT;
368 case MESA_FORMAT_RGBA_INT16:
369 return PIPE_FORMAT_R16G16B16A16_SINT;
370 case MESA_FORMAT_R_INT32:
371 return PIPE_FORMAT_R32_SINT;
372 case MESA_FORMAT_RG_INT32:
373 return PIPE_FORMAT_R32G32_SINT;
374 case MESA_FORMAT_RGB_INT32:
375 return PIPE_FORMAT_R32G32B32_SINT;
376 case MESA_FORMAT_RGBA_INT32:
377 return PIPE_FORMAT_R32G32B32A32_SINT;
378
379 /* unsigned int formats */
380 case MESA_FORMAT_R_UINT8:
381 return PIPE_FORMAT_R8_UINT;
382 case MESA_FORMAT_RG_UINT8:
383 return PIPE_FORMAT_R8G8_UINT;
384 case MESA_FORMAT_RGB_UINT8:
385 return PIPE_FORMAT_R8G8B8_UINT;
386 case MESA_FORMAT_RGBA_UINT8:
387 return PIPE_FORMAT_R8G8B8A8_UINT;
388 case MESA_FORMAT_R_UINT16:
389 return PIPE_FORMAT_R16_UINT;
390 case MESA_FORMAT_RG_UINT16:
391 return PIPE_FORMAT_R16G16_UINT;
392 case MESA_FORMAT_RGB_UINT16:
393 return PIPE_FORMAT_R16G16B16_UINT;
394 case MESA_FORMAT_RGBA_UINT16:
395 return PIPE_FORMAT_R16G16B16A16_UINT;
396 case MESA_FORMAT_R_UINT32:
397 return PIPE_FORMAT_R32_UINT;
398 case MESA_FORMAT_RG_UINT32:
399 return PIPE_FORMAT_R32G32_UINT;
400 case MESA_FORMAT_RGB_UINT32:
401 return PIPE_FORMAT_R32G32B32_UINT;
402 case MESA_FORMAT_RGBA_UINT32:
403 return PIPE_FORMAT_R32G32B32A32_UINT;
404
405 case MESA_FORMAT_RED_RGTC1:
406 return PIPE_FORMAT_RGTC1_UNORM;
407 case MESA_FORMAT_SIGNED_RED_RGTC1:
408 return PIPE_FORMAT_RGTC1_SNORM;
409 case MESA_FORMAT_RG_RGTC2:
410 return PIPE_FORMAT_RGTC2_UNORM;
411 case MESA_FORMAT_SIGNED_RG_RGTC2:
412 return PIPE_FORMAT_RGTC2_SNORM;
413
414 case MESA_FORMAT_L_LATC1:
415 return PIPE_FORMAT_LATC1_UNORM;
416 case MESA_FORMAT_SIGNED_L_LATC1:
417 return PIPE_FORMAT_LATC1_SNORM;
418 case MESA_FORMAT_LA_LATC2:
419 return PIPE_FORMAT_LATC2_UNORM;
420 case MESA_FORMAT_SIGNED_LA_LATC2:
421 return PIPE_FORMAT_LATC2_SNORM;
422
423 /* signed normalized formats */
424 case MESA_FORMAT_SIGNED_R8:
425 return PIPE_FORMAT_R8_SNORM;
426 case MESA_FORMAT_SIGNED_RG88_REV:
427 return PIPE_FORMAT_R8G8_SNORM;
428 case MESA_FORMAT_SIGNED_RGBA8888_REV:
429 return PIPE_FORMAT_R8G8B8A8_SNORM;
430
431 case MESA_FORMAT_SIGNED_A8:
432 return PIPE_FORMAT_A8_SNORM;
433 case MESA_FORMAT_SIGNED_L8:
434 return PIPE_FORMAT_L8_SNORM;
435 case MESA_FORMAT_SIGNED_AL88:
436 return PIPE_FORMAT_L8A8_SNORM;
437 case MESA_FORMAT_SIGNED_I8:
438 return PIPE_FORMAT_I8_SNORM;
439
440 case MESA_FORMAT_SIGNED_R16:
441 return PIPE_FORMAT_R16_SNORM;
442 case MESA_FORMAT_SIGNED_GR1616:
443 return PIPE_FORMAT_R16G16_SNORM;
444 case MESA_FORMAT_SIGNED_RGBA_16:
445 return PIPE_FORMAT_R16G16B16A16_SNORM;
446
447 case MESA_FORMAT_SIGNED_A16:
448 return PIPE_FORMAT_A16_SNORM;
449 case MESA_FORMAT_SIGNED_L16:
450 return PIPE_FORMAT_L16_SNORM;
451 case MESA_FORMAT_SIGNED_AL1616:
452 return PIPE_FORMAT_L16A16_SNORM;
453 case MESA_FORMAT_SIGNED_I16:
454 return PIPE_FORMAT_I16_SNORM;
455
456 case MESA_FORMAT_RGB9_E5_FLOAT:
457 return PIPE_FORMAT_R9G9B9E5_FLOAT;
458 case MESA_FORMAT_R11_G11_B10_FLOAT:
459 return PIPE_FORMAT_R11G11B10_FLOAT;
460
461 default:
462 assert(0);
463 return PIPE_FORMAT_NONE;
464 }
465 }
466
467
468 /**
469 * Translate Gallium format to Mesa format.
470 */
471 gl_format
472 st_pipe_format_to_mesa_format(enum pipe_format format)
473 {
474 switch (format) {
475 case PIPE_FORMAT_A8B8G8R8_UNORM:
476 return MESA_FORMAT_RGBA8888;
477 case PIPE_FORMAT_R8G8B8A8_UNORM:
478 return MESA_FORMAT_RGBA8888_REV;
479 case PIPE_FORMAT_B8G8R8A8_UNORM:
480 return MESA_FORMAT_ARGB8888;
481 case PIPE_FORMAT_A8R8G8B8_UNORM:
482 return MESA_FORMAT_ARGB8888_REV;
483 case PIPE_FORMAT_X8B8G8R8_UNORM:
484 return MESA_FORMAT_RGBX8888;
485 case PIPE_FORMAT_R8G8B8X8_UNORM:
486 return MESA_FORMAT_RGBX8888_REV;
487 case PIPE_FORMAT_B8G8R8X8_UNORM:
488 return MESA_FORMAT_XRGB8888;
489 case PIPE_FORMAT_X8R8G8B8_UNORM:
490 return MESA_FORMAT_XRGB8888_REV;
491 case PIPE_FORMAT_B5G5R5A1_UNORM:
492 return MESA_FORMAT_ARGB1555;
493 case PIPE_FORMAT_B4G4R4A4_UNORM:
494 return MESA_FORMAT_ARGB4444;
495 case PIPE_FORMAT_B5G6R5_UNORM:
496 return MESA_FORMAT_RGB565;
497 case PIPE_FORMAT_B2G3R3_UNORM:
498 return MESA_FORMAT_RGB332;
499 case PIPE_FORMAT_B10G10R10A2_UNORM:
500 return MESA_FORMAT_ARGB2101010;
501 case PIPE_FORMAT_L4A4_UNORM:
502 return MESA_FORMAT_AL44;
503 case PIPE_FORMAT_L8A8_UNORM:
504 return MESA_FORMAT_AL88;
505 case PIPE_FORMAT_L16A16_UNORM:
506 return MESA_FORMAT_AL1616;
507 case PIPE_FORMAT_A8_UNORM:
508 return MESA_FORMAT_A8;
509 case PIPE_FORMAT_A16_UNORM:
510 return MESA_FORMAT_A16;
511 case PIPE_FORMAT_L8_UNORM:
512 return MESA_FORMAT_L8;
513 case PIPE_FORMAT_L16_UNORM:
514 return MESA_FORMAT_L16;
515 case PIPE_FORMAT_I8_UNORM:
516 return MESA_FORMAT_I8;
517 case PIPE_FORMAT_I16_UNORM:
518 return MESA_FORMAT_I16;
519 case PIPE_FORMAT_S8_UINT:
520 return MESA_FORMAT_S8;
521
522 case PIPE_FORMAT_R16G16B16A16_UNORM:
523 return MESA_FORMAT_RGBA_16;
524
525 case PIPE_FORMAT_Z16_UNORM:
526 return MESA_FORMAT_Z16;
527 case PIPE_FORMAT_Z32_UNORM:
528 return MESA_FORMAT_Z32;
529 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
530 return MESA_FORMAT_Z24_S8;
531 case PIPE_FORMAT_X8Z24_UNORM:
532 return MESA_FORMAT_Z24_X8;
533 case PIPE_FORMAT_Z24X8_UNORM:
534 return MESA_FORMAT_X8_Z24;
535 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
536 return MESA_FORMAT_S8_Z24;
537 case PIPE_FORMAT_Z32_FLOAT:
538 return MESA_FORMAT_Z32_FLOAT;
539 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
540 return MESA_FORMAT_Z32_FLOAT_X24S8;
541
542 case PIPE_FORMAT_UYVY:
543 return MESA_FORMAT_YCBCR;
544 case PIPE_FORMAT_YUYV:
545 return MESA_FORMAT_YCBCR_REV;
546
547 #if FEATURE_texture_s3tc
548 case PIPE_FORMAT_DXT1_RGB:
549 return MESA_FORMAT_RGB_DXT1;
550 case PIPE_FORMAT_DXT1_RGBA:
551 return MESA_FORMAT_RGBA_DXT1;
552 case PIPE_FORMAT_DXT3_RGBA:
553 return MESA_FORMAT_RGBA_DXT3;
554 case PIPE_FORMAT_DXT5_RGBA:
555 return MESA_FORMAT_RGBA_DXT5;
556 #if FEATURE_EXT_texture_sRGB
557 case PIPE_FORMAT_DXT1_SRGB:
558 return MESA_FORMAT_SRGB_DXT1;
559 case PIPE_FORMAT_DXT1_SRGBA:
560 return MESA_FORMAT_SRGBA_DXT1;
561 case PIPE_FORMAT_DXT3_SRGBA:
562 return MESA_FORMAT_SRGBA_DXT3;
563 case PIPE_FORMAT_DXT5_SRGBA:
564 return MESA_FORMAT_SRGBA_DXT5;
565 #endif
566 #endif
567
568 #if FEATURE_EXT_texture_sRGB
569 case PIPE_FORMAT_L8A8_SRGB:
570 return MESA_FORMAT_SLA8;
571 case PIPE_FORMAT_L8_SRGB:
572 return MESA_FORMAT_SL8;
573 case PIPE_FORMAT_R8G8B8_SRGB:
574 return MESA_FORMAT_SRGB8;
575 case PIPE_FORMAT_A8B8G8R8_SRGB:
576 return MESA_FORMAT_SRGBA8;
577 case PIPE_FORMAT_B8G8R8A8_SRGB:
578 return MESA_FORMAT_SARGB8;
579 #endif
580 case PIPE_FORMAT_R32G32B32A32_FLOAT:
581 return MESA_FORMAT_RGBA_FLOAT32;
582 case PIPE_FORMAT_R16G16B16A16_FLOAT:
583 return MESA_FORMAT_RGBA_FLOAT16;
584 case PIPE_FORMAT_R32G32B32_FLOAT:
585 return MESA_FORMAT_RGB_FLOAT32;
586 case PIPE_FORMAT_R16G16B16_FLOAT:
587 return MESA_FORMAT_RGB_FLOAT16;
588 case PIPE_FORMAT_L32A32_FLOAT:
589 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
590 case PIPE_FORMAT_L16A16_FLOAT:
591 return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
592 case PIPE_FORMAT_L32_FLOAT:
593 return MESA_FORMAT_LUMINANCE_FLOAT32;
594 case PIPE_FORMAT_L16_FLOAT:
595 return MESA_FORMAT_LUMINANCE_FLOAT16;
596 case PIPE_FORMAT_A32_FLOAT:
597 return MESA_FORMAT_ALPHA_FLOAT32;
598 case PIPE_FORMAT_A16_FLOAT:
599 return MESA_FORMAT_ALPHA_FLOAT16;
600 case PIPE_FORMAT_I32_FLOAT:
601 return MESA_FORMAT_INTENSITY_FLOAT32;
602 case PIPE_FORMAT_I16_FLOAT:
603 return MESA_FORMAT_INTENSITY_FLOAT16;
604 case PIPE_FORMAT_R32_FLOAT:
605 return MESA_FORMAT_R_FLOAT32;
606 case PIPE_FORMAT_R16_FLOAT:
607 return MESA_FORMAT_R_FLOAT16;
608 case PIPE_FORMAT_R32G32_FLOAT:
609 return MESA_FORMAT_RG_FLOAT32;
610 case PIPE_FORMAT_R16G16_FLOAT:
611 return MESA_FORMAT_RG_FLOAT16;
612
613 case PIPE_FORMAT_R8_UNORM:
614 return MESA_FORMAT_R8;
615 case PIPE_FORMAT_R16_UNORM:
616 return MESA_FORMAT_R16;
617 case PIPE_FORMAT_R8G8_UNORM:
618 return MESA_FORMAT_RG88;
619 case PIPE_FORMAT_R16G16_UNORM:
620 return MESA_FORMAT_RG1616;
621
622 case PIPE_FORMAT_A8_UINT:
623 return MESA_FORMAT_ALPHA_UINT8;
624 case PIPE_FORMAT_A16_UINT:
625 return MESA_FORMAT_ALPHA_UINT16;
626 case PIPE_FORMAT_A32_UINT:
627 return MESA_FORMAT_ALPHA_UINT32;
628 case PIPE_FORMAT_A8_SINT:
629 return MESA_FORMAT_ALPHA_INT8;
630 case PIPE_FORMAT_A16_SINT:
631 return MESA_FORMAT_ALPHA_INT16;
632 case PIPE_FORMAT_A32_SINT:
633 return MESA_FORMAT_ALPHA_INT32;
634
635 case PIPE_FORMAT_I8_UINT:
636 return MESA_FORMAT_INTENSITY_UINT8;
637 case PIPE_FORMAT_I16_UINT:
638 return MESA_FORMAT_INTENSITY_UINT16;
639 case PIPE_FORMAT_I32_UINT:
640 return MESA_FORMAT_INTENSITY_UINT32;
641 case PIPE_FORMAT_I8_SINT:
642 return MESA_FORMAT_INTENSITY_INT8;
643 case PIPE_FORMAT_I16_SINT:
644 return MESA_FORMAT_INTENSITY_INT16;
645 case PIPE_FORMAT_I32_SINT:
646 return MESA_FORMAT_INTENSITY_INT32;
647
648 case PIPE_FORMAT_L8_UINT:
649 return MESA_FORMAT_LUMINANCE_UINT8;
650 case PIPE_FORMAT_L16_UINT:
651 return MESA_FORMAT_LUMINANCE_UINT16;
652 case PIPE_FORMAT_L32_UINT:
653 return MESA_FORMAT_LUMINANCE_UINT32;
654 case PIPE_FORMAT_L8_SINT:
655 return MESA_FORMAT_LUMINANCE_INT8;
656 case PIPE_FORMAT_L16_SINT:
657 return MESA_FORMAT_LUMINANCE_INT16;
658 case PIPE_FORMAT_L32_SINT:
659 return MESA_FORMAT_LUMINANCE_INT32;
660
661 case PIPE_FORMAT_L8A8_UINT:
662 return MESA_FORMAT_LUMINANCE_ALPHA_UINT8;
663 case PIPE_FORMAT_L16A16_UINT:
664 return MESA_FORMAT_LUMINANCE_ALPHA_UINT16;
665 case PIPE_FORMAT_L32A32_UINT:
666 return MESA_FORMAT_LUMINANCE_ALPHA_UINT32;
667 case PIPE_FORMAT_L8A8_SINT:
668 return MESA_FORMAT_LUMINANCE_ALPHA_INT8;
669 case PIPE_FORMAT_L16A16_SINT:
670 return MESA_FORMAT_LUMINANCE_ALPHA_INT16;
671 case PIPE_FORMAT_L32A32_SINT:
672 return MESA_FORMAT_LUMINANCE_ALPHA_INT32;
673
674 case PIPE_FORMAT_R8_SINT:
675 return MESA_FORMAT_R_INT8;
676 case PIPE_FORMAT_R8G8_SINT:
677 return MESA_FORMAT_RG_INT8;
678 case PIPE_FORMAT_R8G8B8_SINT:
679 return MESA_FORMAT_RGB_INT8;
680 case PIPE_FORMAT_R8G8B8A8_SINT:
681 return MESA_FORMAT_RGBA_INT8;
682
683 case PIPE_FORMAT_R16_SINT:
684 return MESA_FORMAT_R_INT16;
685 case PIPE_FORMAT_R16G16_SINT:
686 return MESA_FORMAT_RG_INT16;
687 case PIPE_FORMAT_R16G16B16_SINT:
688 return MESA_FORMAT_RGB_INT16;
689 case PIPE_FORMAT_R16G16B16A16_SINT:
690 return MESA_FORMAT_RGBA_INT16;
691
692 case PIPE_FORMAT_R32_SINT:
693 return MESA_FORMAT_R_INT32;
694 case PIPE_FORMAT_R32G32_SINT:
695 return MESA_FORMAT_RG_INT32;
696 case PIPE_FORMAT_R32G32B32_SINT:
697 return MESA_FORMAT_RGB_INT32;
698 case PIPE_FORMAT_R32G32B32A32_SINT:
699 return MESA_FORMAT_RGBA_INT32;
700
701 /* unsigned int formats */
702 case PIPE_FORMAT_R8_UINT:
703 return MESA_FORMAT_R_UINT8;
704 case PIPE_FORMAT_R8G8_UINT:
705 return MESA_FORMAT_RG_UINT8;
706 case PIPE_FORMAT_R8G8B8_UINT:
707 return MESA_FORMAT_RGB_UINT8;
708 case PIPE_FORMAT_R8G8B8A8_UINT:
709 return MESA_FORMAT_RGBA_UINT8;
710
711 case PIPE_FORMAT_R16_UINT:
712 return MESA_FORMAT_R_UINT16;
713 case PIPE_FORMAT_R16G16_UINT:
714 return MESA_FORMAT_RG_UINT16;
715 case PIPE_FORMAT_R16G16B16_UINT:
716 return MESA_FORMAT_RGB_UINT16;
717 case PIPE_FORMAT_R16G16B16A16_UINT:
718 return MESA_FORMAT_RGBA_UINT16;
719
720 case PIPE_FORMAT_R32_UINT:
721 return MESA_FORMAT_R_UINT32;
722 case PIPE_FORMAT_R32G32_UINT:
723 return MESA_FORMAT_RG_UINT32;
724 case PIPE_FORMAT_R32G32B32_UINT:
725 return MESA_FORMAT_RGB_UINT32;
726 case PIPE_FORMAT_R32G32B32A32_UINT:
727 return MESA_FORMAT_RGBA_UINT32;
728
729 case PIPE_FORMAT_RGTC1_UNORM:
730 return MESA_FORMAT_RED_RGTC1;
731 case PIPE_FORMAT_RGTC1_SNORM:
732 return MESA_FORMAT_SIGNED_RED_RGTC1;
733 case PIPE_FORMAT_RGTC2_UNORM:
734 return MESA_FORMAT_RG_RGTC2;
735 case PIPE_FORMAT_RGTC2_SNORM:
736 return MESA_FORMAT_SIGNED_RG_RGTC2;
737
738 case PIPE_FORMAT_LATC1_UNORM:
739 return MESA_FORMAT_L_LATC1;
740 case PIPE_FORMAT_LATC1_SNORM:
741 return MESA_FORMAT_SIGNED_L_LATC1;
742 case PIPE_FORMAT_LATC2_UNORM:
743 return MESA_FORMAT_LA_LATC2;
744 case PIPE_FORMAT_LATC2_SNORM:
745 return MESA_FORMAT_SIGNED_LA_LATC2;
746
747 /* signed normalized formats */
748 case PIPE_FORMAT_R8_SNORM:
749 return MESA_FORMAT_SIGNED_R8;
750 case PIPE_FORMAT_R8G8_SNORM:
751 return MESA_FORMAT_SIGNED_RG88_REV;
752 case PIPE_FORMAT_R8G8B8A8_SNORM:
753 return MESA_FORMAT_SIGNED_RGBA8888_REV;
754
755 case PIPE_FORMAT_A8_SNORM:
756 return MESA_FORMAT_SIGNED_A8;
757 case PIPE_FORMAT_L8_SNORM:
758 return MESA_FORMAT_SIGNED_L8;
759 case PIPE_FORMAT_L8A8_SNORM:
760 return MESA_FORMAT_SIGNED_AL88;
761 case PIPE_FORMAT_I8_SNORM:
762 return MESA_FORMAT_SIGNED_I8;
763
764 case PIPE_FORMAT_R16_SNORM:
765 return MESA_FORMAT_SIGNED_R16;
766 case PIPE_FORMAT_R16G16_SNORM:
767 return MESA_FORMAT_SIGNED_GR1616;
768 case PIPE_FORMAT_R16G16B16A16_SNORM:
769 return MESA_FORMAT_SIGNED_RGBA_16;
770
771 case PIPE_FORMAT_A16_SNORM:
772 return MESA_FORMAT_SIGNED_A16;
773 case PIPE_FORMAT_L16_SNORM:
774 return MESA_FORMAT_SIGNED_L16;
775 case PIPE_FORMAT_L16A16_SNORM:
776 return MESA_FORMAT_SIGNED_AL1616;
777 case PIPE_FORMAT_I16_SNORM:
778 return MESA_FORMAT_SIGNED_I16;
779
780 case PIPE_FORMAT_R9G9B9E5_FLOAT:
781 return MESA_FORMAT_RGB9_E5_FLOAT;
782 case PIPE_FORMAT_R11G11B10_FLOAT:
783 return MESA_FORMAT_R11_G11_B10_FLOAT;
784
785 default:
786 assert(0);
787 return MESA_FORMAT_NONE;
788 }
789 }
790
791
792 /**
793 * Map GL texture formats to Gallium pipe formats.
794 */
795 struct format_mapping
796 {
797 GLenum glFormats[18]; /**< list of GLenum formats, 0-terminated */
798 enum pipe_format pipeFormats[10]; /**< list of pipe formats, 0-terminated */
799 };
800
801
802 #define DEFAULT_RGBA_FORMATS \
803 PIPE_FORMAT_B8G8R8A8_UNORM, \
804 PIPE_FORMAT_A8R8G8B8_UNORM, \
805 PIPE_FORMAT_A8B8G8R8_UNORM, \
806 PIPE_FORMAT_B5G6R5_UNORM, \
807 0
808
809 #define DEFAULT_RGB_FORMATS \
810 PIPE_FORMAT_B8G8R8X8_UNORM, \
811 PIPE_FORMAT_X8R8G8B8_UNORM, \
812 PIPE_FORMAT_X8B8G8R8_UNORM, \
813 PIPE_FORMAT_B8G8R8A8_UNORM, \
814 PIPE_FORMAT_A8R8G8B8_UNORM, \
815 PIPE_FORMAT_A8B8G8R8_UNORM, \
816 PIPE_FORMAT_B5G6R5_UNORM, \
817 0
818
819 #define DEFAULT_SRGBA_FORMATS \
820 PIPE_FORMAT_B8G8R8A8_SRGB, \
821 PIPE_FORMAT_A8R8G8B8_SRGB, \
822 PIPE_FORMAT_A8B8G8R8_SRGB, \
823 0
824
825 #define DEFAULT_DEPTH_FORMATS \
826 PIPE_FORMAT_Z24X8_UNORM, \
827 PIPE_FORMAT_X8Z24_UNORM, \
828 PIPE_FORMAT_Z16_UNORM, \
829 PIPE_FORMAT_Z24_UNORM_S8_UINT, \
830 PIPE_FORMAT_S8_UINT_Z24_UNORM, \
831 0
832
833 /**
834 * This table maps OpenGL texture format enums to Gallium pipe_format enums.
835 * Multiple GL enums might map to multiple pipe_formats.
836 * The first pipe format in the list that's supported is the one that's chosen.
837 */
838 static const struct format_mapping format_map[] = {
839 /* Basic RGB, RGBA formats */
840 {
841 { GL_RGB10, GL_RGB10_A2, 0 },
842 { PIPE_FORMAT_B10G10R10A2_UNORM, DEFAULT_RGBA_FORMATS }
843 },
844 {
845 { 4, GL_RGBA, GL_RGBA8, 0 },
846 { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
847 },
848 {
849 { GL_BGRA, 0 },
850 { PIPE_FORMAT_B8G8R8A8_UNORM, DEFAULT_RGBA_FORMATS }
851 },
852 {
853 { 3, GL_RGB, GL_RGB8, 0 },
854 { DEFAULT_RGB_FORMATS }
855 },
856 {
857 { GL_RGB12, GL_RGB16, GL_RGBA12, GL_RGBA16, 0 },
858 { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
859 },
860 {
861 { GL_RGBA4, GL_RGBA2, 0 },
862 { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
863 },
864 {
865 { GL_RGB5_A1, 0 },
866 { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
867 },
868 {
869 { GL_R3_G3_B2, 0 },
870 { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
871 PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
872 },
873 {
874 { GL_RGB5, GL_RGB4 },
875 { PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
876 DEFAULT_RGBA_FORMATS }
877 },
878
879 /* basic Alpha formats */
880 {
881 { GL_ALPHA12, GL_ALPHA16, 0 },
882 { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
883 DEFAULT_RGBA_FORMATS }
884 },
885 {
886 { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
887 { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
888 },
889
890 /* basic Luminance formats */
891 {
892 { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
893 { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
894 },
895 {
896 { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
897 { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
898 },
899
900 /* basic Luminance/Alpha formats */
901 {
902 { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
903 GL_LUMINANCE16_ALPHA16, 0},
904 { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
905 DEFAULT_RGBA_FORMATS }
906 },
907 {
908 { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
909 { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
910 },
911 {
912 { GL_LUMINANCE4_ALPHA4, 0 },
913 { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
914 DEFAULT_RGBA_FORMATS }
915 },
916
917 /* basic Intensity formats */
918 {
919 { GL_INTENSITY12, GL_INTENSITY16, 0 },
920 { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
921 },
922 {
923 { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
924 GL_COMPRESSED_INTENSITY, 0 },
925 { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
926 },
927
928 /* YCbCr */
929 {
930 { GL_YCBCR_MESA, 0 },
931 { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
932 },
933
934 /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
935 {
936 { GL_COMPRESSED_RGB, 0 },
937 { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
938 },
939 {
940 { GL_COMPRESSED_RGBA, 0 },
941 { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
942 },
943 {
944 { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
945 { PIPE_FORMAT_DXT1_RGB, 0 }
946 },
947 {
948 { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
949 { PIPE_FORMAT_DXT1_RGBA, 0 }
950 },
951 {
952 { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
953 { PIPE_FORMAT_DXT3_RGBA, 0 }
954 },
955 {
956 { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
957 { PIPE_FORMAT_DXT5_RGBA, 0 }
958 },
959
960 #if 0
961 {
962 { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
963 { PIPE_FORMAT_RGB_FXT1, 0 }
964 },
965 {
966 { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
967 { PIPE_FORMAT_RGBA_FXT1, 0 }
968 },
969 #endif
970
971 /* Depth formats */
972 {
973 { GL_DEPTH_COMPONENT16, 0 },
974 { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
975 },
976 {
977 { GL_DEPTH_COMPONENT24, 0 },
978 { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
979 DEFAULT_DEPTH_FORMATS }
980 },
981 {
982 { GL_DEPTH_COMPONENT32, 0 },
983 { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
984 },
985 {
986 { GL_DEPTH_COMPONENT, 0 },
987 { DEFAULT_DEPTH_FORMATS }
988 },
989 {
990 { GL_DEPTH_COMPONENT32F, 0 },
991 { PIPE_FORMAT_Z32_FLOAT, 0 }
992 },
993
994 /* stencil formats */
995 {
996 { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
997 GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
998 {
999 PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
1000 PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
1001 }
1002 },
1003
1004 /* Depth / Stencil formats */
1005 {
1006 { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
1007 { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
1008 },
1009 {
1010 { GL_DEPTH32F_STENCIL8, 0 },
1011 { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
1012 },
1013
1014 /* sRGB formats */
1015 {
1016 { GL_SRGB_EXT, GL_SRGB8_EXT, GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
1017 { DEFAULT_SRGBA_FORMATS }
1018 },
1019 {
1020 { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
1021 { PIPE_FORMAT_DXT1_SRGB, DEFAULT_SRGBA_FORMATS }
1022 },
1023 {
1024 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
1025 { PIPE_FORMAT_DXT1_SRGBA, 0 }
1026 },
1027 {
1028 { GL_COMPRESSED_SRGB_ALPHA_EXT,
1029 GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
1030 { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
1031 },
1032 {
1033 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
1034 { PIPE_FORMAT_DXT5_SRGBA, 0 }
1035 },
1036 {
1037 { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
1038 GL_COMPRESSED_SLUMINANCE_EXT, GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
1039 { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1040 },
1041 {
1042 { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, 0 },
1043 { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
1044 },
1045
1046 /* 16-bit float formats */
1047 {
1048 { GL_RGBA16F_ARB, 0 },
1049 { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1050 },
1051 {
1052 { GL_RGB16F_ARB, 0 },
1053 { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1054 PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1055 },
1056 {
1057 { GL_LUMINANCE_ALPHA16F_ARB, 0 },
1058 { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1059 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1060 },
1061 {
1062 { GL_ALPHA16F_ARB, 0 },
1063 { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1064 PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1065 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1066 },
1067 {
1068 { GL_INTENSITY16F_ARB, 0 },
1069 { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1070 PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1071 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1072 },
1073 {
1074 { GL_LUMINANCE16F_ARB, 0 },
1075 { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1076 PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1077 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1078 },
1079 {
1080 { GL_R16F, 0 },
1081 { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1082 PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1083 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1084 },
1085 {
1086 { GL_RG16F, 0 },
1087 { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1088 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1089 },
1090
1091 /* 32-bit float formats */
1092 {
1093 { GL_RGBA32F_ARB, 0 },
1094 { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1095 },
1096 {
1097 { GL_RGB32F_ARB, 0 },
1098 { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1099 PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1100 },
1101 {
1102 { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1103 { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1104 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1105 },
1106 {
1107 { GL_ALPHA32F_ARB, 0 },
1108 { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1109 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
1110 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1111 },
1112 {
1113 { GL_INTENSITY32F_ARB, 0 },
1114 { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1115 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
1116 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1117 },
1118 {
1119 { GL_LUMINANCE32F_ARB, 0 },
1120 { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1121 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
1122 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1123 },
1124 {
1125 { GL_R32F, 0 },
1126 { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1127 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
1128 PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1129 },
1130 {
1131 { GL_RG32F, 0 },
1132 { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1133 PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1134 },
1135
1136 /* R, RG formats */
1137 {
1138 { GL_RED, GL_R8, 0 },
1139 { PIPE_FORMAT_R8_UNORM, 0 }
1140 },
1141 {
1142 { GL_RG, GL_RG8, 0 },
1143 { PIPE_FORMAT_R8G8_UNORM, 0 }
1144 },
1145 {
1146 { GL_R16, 0 },
1147 { PIPE_FORMAT_R16_UNORM, 0 }
1148 },
1149 {
1150 { GL_RG16, 0 },
1151 { PIPE_FORMAT_R16G16_UNORM, 0 }
1152 },
1153
1154 /* compressed R, RG formats */
1155 {
1156 { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1157 { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, 0 }
1158 },
1159 {
1160 { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1161 { PIPE_FORMAT_RGTC1_SNORM, 0 }
1162 },
1163 {
1164 { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1165 { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, 0 }
1166 },
1167 {
1168 { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1169 { PIPE_FORMAT_RGTC2_SNORM, 0 }
1170 },
1171 {
1172 { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1173 { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, 0 }
1174 },
1175 {
1176 { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1177 { PIPE_FORMAT_LATC1_SNORM, 0 }
1178 },
1179 {
1180 { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1181 GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1182 { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, 0 }
1183 },
1184 {
1185 { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1186 { PIPE_FORMAT_LATC2_SNORM, 0 }
1187 },
1188
1189 /* signed/unsigned integer formats.
1190 */
1191 {
1192 { GL_RED_INTEGER_EXT,
1193 GL_GREEN_INTEGER_EXT,
1194 GL_BLUE_INTEGER_EXT,
1195 GL_RGBA_INTEGER_EXT,
1196 GL_BGRA_INTEGER_EXT,
1197 GL_RGBA8I_EXT, 0 },
1198 { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1199 },
1200 {
1201 { GL_RGB_INTEGER_EXT,
1202 GL_BGR_INTEGER_EXT,
1203 GL_RGB8I_EXT, 0 },
1204 { PIPE_FORMAT_R8G8B8_SINT,
1205 PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1206 },
1207 {
1208 { GL_ALPHA_INTEGER_EXT,
1209 GL_ALPHA8I_EXT, 0 },
1210 { PIPE_FORMAT_A8_SINT, 0 }
1211 },
1212 {
1213 { GL_ALPHA16I_EXT, 0 },
1214 { PIPE_FORMAT_A16_SINT, 0 }
1215 },
1216 {
1217 { GL_ALPHA32I_EXT, 0 },
1218 { PIPE_FORMAT_A32_SINT, 0 }
1219 },
1220 {
1221 { GL_ALPHA8UI_EXT, 0 },
1222 { PIPE_FORMAT_A8_UINT, 0 }
1223 },
1224 {
1225 { GL_ALPHA16UI_EXT, 0 },
1226 { PIPE_FORMAT_A16_UINT, 0 }
1227 },
1228 {
1229 { GL_ALPHA32UI_EXT, 0 },
1230 { PIPE_FORMAT_A32_UINT, 0 }
1231 },
1232 {
1233 { GL_INTENSITY8I_EXT, 0 },
1234 { PIPE_FORMAT_I8_SINT, 0 }
1235 },
1236 {
1237 { GL_INTENSITY16I_EXT, 0 },
1238 { PIPE_FORMAT_I16_SINT, 0 }
1239 },
1240 {
1241 { GL_INTENSITY32I_EXT, 0 },
1242 { PIPE_FORMAT_I32_SINT, 0 }
1243 },
1244 {
1245 { GL_INTENSITY8UI_EXT, 0 },
1246 { PIPE_FORMAT_I8_UINT, 0 }
1247 },
1248 {
1249 { GL_INTENSITY16UI_EXT, 0 },
1250 { PIPE_FORMAT_I16_UINT, 0 }
1251 },
1252 {
1253 { GL_INTENSITY32UI_EXT, 0 },
1254 { PIPE_FORMAT_I32_UINT, 0 }
1255 },
1256 {
1257 { GL_LUMINANCE8I_EXT, 0 },
1258 { PIPE_FORMAT_L8_SINT, 0 }
1259 },
1260 {
1261 { GL_LUMINANCE16I_EXT, 0 },
1262 { PIPE_FORMAT_L16_SINT, 0 }
1263 },
1264 {
1265 { GL_LUMINANCE32I_EXT, 0 },
1266 { PIPE_FORMAT_L32_SINT, 0 }
1267 },
1268 {
1269 { GL_LUMINANCE_INTEGER_EXT,
1270 GL_LUMINANCE8UI_EXT, 0 },
1271 { PIPE_FORMAT_L8_UINT, 0 }
1272 },
1273 {
1274 { GL_LUMINANCE16UI_EXT, 0 },
1275 { PIPE_FORMAT_L16_UINT, 0 }
1276 },
1277 {
1278 { GL_LUMINANCE32UI_EXT, 0 },
1279 { PIPE_FORMAT_L32_UINT, 0 }
1280 },
1281 {
1282 { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1283 GL_LUMINANCE_ALPHA8I_EXT, 0 },
1284 { PIPE_FORMAT_L8A8_SINT, 0 }
1285 },
1286 {
1287 { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1288 { PIPE_FORMAT_L16A16_SINT, 0 }
1289 },
1290 {
1291 { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1292 { PIPE_FORMAT_L32A32_SINT, 0 }
1293 },
1294 {
1295 { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1296 { PIPE_FORMAT_L8A8_UINT, 0 }
1297 },
1298 {
1299 { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1300 { PIPE_FORMAT_L16A16_UINT, 0 }
1301 },
1302 {
1303 { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1304 { PIPE_FORMAT_L32A32_UINT, 0 }
1305 },
1306 {
1307 { GL_RGB16I_EXT, 0 },
1308 { PIPE_FORMAT_R16G16B16_SINT,
1309 PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1310 },
1311 {
1312 { GL_RGBA16I_EXT, 0 },
1313 { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1314 },
1315 {
1316 { GL_RGB32I_EXT, 0 },
1317 { PIPE_FORMAT_R32G32B32_SINT,
1318 PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1319 },
1320 {
1321 { GL_RGBA32I_EXT, 0 },
1322 { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1323 },
1324 {
1325 { GL_RGBA8UI_EXT, 0 },
1326 { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1327 },
1328 {
1329 { GL_RGB8UI_EXT, 0 },
1330 { PIPE_FORMAT_R8G8B8_UINT,
1331 PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1332 },
1333 {
1334 { GL_RGB16UI_EXT, 0 },
1335 { PIPE_FORMAT_R16G16B16_UINT,
1336 PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1337 },
1338 {
1339 { GL_RGBA16UI_EXT, 0 },
1340 { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1341 },
1342 {
1343 { GL_RGB32UI_EXT, 0},
1344 { PIPE_FORMAT_R32G32B32_UINT,
1345 PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1346 },
1347 {
1348 { GL_RGBA32UI_EXT, 0},
1349 { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1350 },
1351 {
1352 { GL_R8I, 0},
1353 { PIPE_FORMAT_R8_SINT, 0},
1354 },
1355 {
1356 { GL_R16I, 0},
1357 { PIPE_FORMAT_R16_SINT, 0},
1358 },
1359 {
1360 { GL_R32I, 0},
1361 { PIPE_FORMAT_R32_SINT, 0},
1362 },
1363 {
1364 { GL_R8UI, 0},
1365 { PIPE_FORMAT_R8_UINT, 0},
1366 },
1367 {
1368 { GL_R16UI, 0},
1369 { PIPE_FORMAT_R16_UINT, 0},
1370 },
1371 {
1372 { GL_R32UI, 0},
1373 { PIPE_FORMAT_R32_UINT, 0},
1374 },
1375 {
1376 { GL_RG8I, 0},
1377 { PIPE_FORMAT_R8G8_SINT, 0},
1378 },
1379 {
1380 { GL_RG16I, 0},
1381 { PIPE_FORMAT_R16G16_SINT, 0},
1382 },
1383 {
1384 { GL_RG32I, 0},
1385 { PIPE_FORMAT_R32G32_SINT, 0},
1386 },
1387 {
1388 { GL_RG8UI, 0},
1389 { PIPE_FORMAT_R8G8_UINT, 0},
1390 },
1391 {
1392 { GL_RG16UI, 0},
1393 { PIPE_FORMAT_R16G16_UINT, 0},
1394 },
1395 {
1396 { GL_RG32UI, 0},
1397 { PIPE_FORMAT_R32G32_UINT, 0},
1398 },
1399 /* signed normalized formats */
1400 {
1401 { GL_RED_SNORM, GL_R8_SNORM, 0 },
1402 { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1403 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1404 },
1405 {
1406 { GL_R16_SNORM, 0 },
1407 { PIPE_FORMAT_R16_SNORM,
1408 PIPE_FORMAT_R16G16_SNORM,
1409 PIPE_FORMAT_R16G16B16A16_SNORM,
1410 PIPE_FORMAT_R8_SNORM,
1411 PIPE_FORMAT_R8G8_SNORM,
1412 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1413 },
1414 {
1415 { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1416 { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1417 },
1418 {
1419 { GL_RG16_SNORM, 0 },
1420 { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1421 PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1422 },
1423 {
1424 { GL_RGB_SNORM, GL_RGB8_SNORM, GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1425 { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1426 },
1427 {
1428 { GL_RGB16_SNORM, GL_RGBA16_SNORM, 0 },
1429 { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1430 },
1431 {
1432 { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1433 { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1434 },
1435 {
1436 { GL_ALPHA16_SNORM, 0 },
1437 { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1438 PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1439 },
1440 {
1441 { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1442 { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1443 },
1444 {
1445 { GL_LUMINANCE16_SNORM, 0 },
1446 { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1447 PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1448 },
1449 {
1450 { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1451 { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1452 },
1453 {
1454 { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1455 { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1456 PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1457 },
1458 {
1459 { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1460 { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1461 },
1462 {
1463 { GL_INTENSITY16_SNORM, 0 },
1464 { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1465 PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1466 },
1467 {
1468 { GL_RGB9_E5, 0 },
1469 { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1470 },
1471 {
1472 { GL_R11F_G11F_B10F, 0 },
1473 { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1474 }
1475 };
1476
1477
1478 /**
1479 * Return first supported format from the given list.
1480 */
1481 static enum pipe_format
1482 find_supported_format(struct pipe_screen *screen,
1483 const enum pipe_format formats[],
1484 enum pipe_texture_target target,
1485 unsigned sample_count,
1486 unsigned tex_usage)
1487 {
1488 uint i;
1489 for (i = 0; formats[i]; i++) {
1490 if (screen->is_format_supported(screen, formats[i], target,
1491 sample_count, tex_usage)) {
1492 return formats[i];
1493 }
1494 }
1495 return PIPE_FORMAT_NONE;
1496 }
1497
1498 struct exact_format_mapping
1499 {
1500 GLenum format;
1501 GLenum type;
1502 enum pipe_format pformat;
1503 };
1504
1505 static const struct exact_format_mapping rgba8888_tbl[] =
1506 {
1507 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_A8B8G8R8_UNORM },
1508 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_A8B8G8R8_UNORM },
1509 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_R8G8B8A8_UNORM },
1510 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_R8G8B8A8_UNORM },
1511 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_A8R8G8B8_UNORM },
1512 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_B8G8R8A8_UNORM },
1513 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8A8_UNORM },
1514 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_A8B8G8R8_UNORM },
1515 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8A8_UNORM },
1516 { 0, 0, 0 }
1517 };
1518
1519 static const struct exact_format_mapping rgbx8888_tbl[] =
1520 {
1521 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_X8R8G8B8_UNORM },
1522 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_B8G8R8X8_UNORM },
1523 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8X8_UNORM },
1524 /* No Mesa formats for these Gallium formats:
1525 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_X8B8G8R8_UNORM },
1526 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_X8B8G8R8_UNORM },
1527 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_R8G8B8X8_UNORM },
1528 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_R8G8B8X8_UNORM },
1529 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8X8_UNORM },
1530 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_X8B8G8R8_UNORM },
1531 */
1532 { 0, 0, 0 }
1533 };
1534
1535 static const struct exact_format_mapping rgba1010102_tbl[] =
1536 {
1537 { GL_BGRA, GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
1538 /* No Mesa formats for these Gallium formats:
1539 { GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
1540 { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2, PIPE_FORMAT_R10G10B10A2_UNORM },
1541 { GL_ABGR_EXT, GL_UNSIGNED_INT, PIPE_FORMAT_R10G10B10A2_UNORM },
1542 */
1543 { 0, 0, 0 }
1544 };
1545
1546 /**
1547 * If there is an exact pipe_format match for {internalFormat, format, type}
1548 * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
1549 */
1550 static enum pipe_format
1551 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1552 {
1553 uint i;
1554 const struct exact_format_mapping* tbl;
1555
1556 if (format == GL_NONE || type == GL_NONE)
1557 return PIPE_FORMAT_NONE;
1558
1559 switch (internalFormat) {
1560 case 4:
1561 case GL_RGBA:
1562 case GL_RGBA8:
1563 tbl = rgba8888_tbl;
1564 break;
1565 case 3:
1566 case GL_RGB:
1567 case GL_RGB8:
1568 tbl = rgbx8888_tbl;
1569 break;
1570 case GL_RGB10_A2:
1571 tbl = rgba1010102_tbl;
1572 break;
1573 default:
1574 return PIPE_FORMAT_NONE;
1575 }
1576
1577 for (i = 0; tbl[i].format; i++)
1578 if (tbl[i].format == format && tbl[i].type == type)
1579 return tbl[i].pformat;
1580
1581 return PIPE_FORMAT_NONE;
1582 }
1583
1584 /**
1585 * Given an OpenGL internalFormat value for a texture or surface, return
1586 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1587 * This is called during glTexImage2D, for example.
1588 *
1589 * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1590 * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1591 * we want render-to-texture ability.
1592 *
1593 * \param internalFormat the user value passed to glTexImage2D
1594 * \param target one of PIPE_TEXTURE_x
1595 * \param bindings bitmask of PIPE_BIND_x flags.
1596 */
1597 enum pipe_format
1598 st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
1599 GLenum format, GLenum type,
1600 enum pipe_texture_target target, unsigned sample_count,
1601 unsigned bindings)
1602 {
1603 GET_CURRENT_CONTEXT(ctx); /* XXX this should be a function parameter */
1604 int i, j;
1605 enum pipe_format pf;
1606
1607 /* can't render to compressed formats at this time */
1608 if (_mesa_is_compressed_format(ctx, internalFormat)
1609 && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1610 return PIPE_FORMAT_NONE;
1611 }
1612
1613 /* search for exact matches */
1614 pf = find_exact_format(internalFormat, format, type);
1615 if (pf != PIPE_FORMAT_NONE &&
1616 screen->is_format_supported(screen, pf,
1617 target, sample_count, bindings))
1618 return pf;
1619
1620 /* search table for internalFormat */
1621 for (i = 0; i < Elements(format_map); i++) {
1622 const struct format_mapping *mapping = &format_map[i];
1623 for (j = 0; mapping->glFormats[j]; j++) {
1624 if (mapping->glFormats[j] == internalFormat) {
1625 /* Found the desired internal format. Find first pipe format
1626 * which is supported by the driver.
1627 */
1628 return find_supported_format(screen, mapping->pipeFormats,
1629 target, sample_count, bindings);
1630 }
1631 }
1632 }
1633
1634 _mesa_problem(NULL, "unhandled format!\n");
1635 return PIPE_FORMAT_NONE;
1636 }
1637
1638
1639 /**
1640 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1641 */
1642 enum pipe_format
1643 st_choose_renderbuffer_format(struct pipe_screen *screen,
1644 GLenum internalFormat, unsigned sample_count)
1645 {
1646 uint usage;
1647 if (_mesa_is_depth_or_stencil_format(internalFormat))
1648 usage = PIPE_BIND_DEPTH_STENCIL;
1649 else
1650 usage = PIPE_BIND_RENDER_TARGET;
1651 return st_choose_format(screen, internalFormat, GL_NONE, GL_NONE, PIPE_TEXTURE_2D,
1652 sample_count, usage);
1653 }
1654
1655
1656 gl_format
1657 st_ChooseTextureFormat_renderable(struct gl_context *ctx, GLint internalFormat,
1658 GLenum format, GLenum type, GLboolean renderable)
1659 {
1660 struct pipe_screen *screen = st_context(ctx)->pipe->screen;
1661 enum pipe_format pFormat;
1662 uint bindings;
1663
1664 (void) format;
1665 (void) type;
1666
1667 /* GL textures may wind up being render targets, but we don't know
1668 * that in advance. Specify potential render target flags now.
1669 */
1670 bindings = PIPE_BIND_SAMPLER_VIEW;
1671 if (renderable) {
1672 if (_mesa_is_depth_or_stencil_format(internalFormat))
1673 bindings |= PIPE_BIND_DEPTH_STENCIL;
1674 else
1675 bindings |= PIPE_BIND_RENDER_TARGET;
1676 }
1677
1678 pFormat = st_choose_format(screen, internalFormat, format, type,
1679 PIPE_TEXTURE_2D, 0, bindings);
1680
1681 if (pFormat == PIPE_FORMAT_NONE) {
1682 /* try choosing format again, this time without render target bindings */
1683 pFormat = st_choose_format(screen, internalFormat, format, type,
1684 PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
1685 }
1686
1687 if (pFormat == PIPE_FORMAT_NONE) {
1688 /* no luck at all */
1689 return MESA_FORMAT_NONE;
1690 }
1691
1692 return st_pipe_format_to_mesa_format(pFormat);
1693 }
1694
1695
1696 /**
1697 * Called via ctx->Driver.ChooseTextureFormat().
1698 */
1699 gl_format
1700 st_ChooseTextureFormat(struct gl_context *ctx, GLint internalFormat,
1701 GLenum format, GLenum type)
1702 {
1703 boolean want_renderable =
1704 internalFormat == 3 || internalFormat == 4 ||
1705 internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1706 internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1707 internalFormat == GL_BGRA;
1708
1709 return st_ChooseTextureFormat_renderable(ctx, internalFormat,
1710 format, type, want_renderable);
1711 }
1712
1713 /**
1714 * Test if a gallium format is equivalent to a GL format/type.
1715 */
1716 GLboolean
1717 st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type)
1718 {
1719 switch (pFormat) {
1720 case PIPE_FORMAT_A8B8G8R8_UNORM:
1721 return format == GL_RGBA && type == GL_UNSIGNED_BYTE;
1722 case PIPE_FORMAT_A8R8G8B8_UNORM:
1723 return format == GL_BGRA && type == GL_UNSIGNED_BYTE;
1724 case PIPE_FORMAT_B5G6R5_UNORM:
1725 return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
1726 /* XXX more combos... */
1727 default:
1728 return GL_FALSE;
1729 }
1730 }
1731
1732 GLboolean
1733 st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
1734 {
1735 if (format1 == format2)
1736 return GL_TRUE;
1737
1738 if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
1739 format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
1740 return GL_TRUE;
1741
1742 if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
1743 format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
1744 return GL_TRUE;
1745
1746 if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
1747 format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
1748 return GL_TRUE;
1749
1750 if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
1751 format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
1752 return GL_TRUE;
1753
1754 if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
1755 format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
1756 return GL_TRUE;
1757
1758 if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
1759 format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
1760 return GL_TRUE;
1761
1762 return GL_FALSE;
1763 }
1764
1765
1766
1767 /**
1768 * This is used for translating texture border color and the clear
1769 * color. For example, the clear color is interpreted according to
1770 * the renderbuffer's base format. For example, if clearing a
1771 * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
1772 * colorOut[2] = colorIn[0].
1773 * Similarly for texture border colors.
1774 */
1775 void
1776 st_translate_color(const GLfloat colorIn[4], GLenum baseFormat,
1777 GLfloat colorOut[4])
1778 {
1779 switch (baseFormat) {
1780 case GL_RED:
1781 colorOut[0] = colorIn[0];
1782 colorOut[1] = 0.0F;
1783 colorOut[2] = 0.0F;
1784 colorOut[3] = 1.0F;
1785 break;
1786 case GL_RG:
1787 colorOut[0] = colorIn[0];
1788 colorOut[1] = colorIn[1];
1789 colorOut[2] = 0.0F;
1790 colorOut[3] = 1.0F;
1791 break;
1792 case GL_RGB:
1793 colorOut[0] = colorIn[0];
1794 colorOut[1] = colorIn[1];
1795 colorOut[2] = colorIn[2];
1796 colorOut[3] = 1.0F;
1797 break;
1798 case GL_ALPHA:
1799 colorOut[0] = colorOut[1] = colorOut[2] = 0.0;
1800 colorOut[3] = colorIn[3];
1801 break;
1802 case GL_LUMINANCE:
1803 colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
1804 colorOut[3] = 1.0;
1805 break;
1806 case GL_LUMINANCE_ALPHA:
1807 colorOut[0] = colorOut[1] = colorOut[2] = colorIn[0];
1808 colorOut[3] = colorIn[3];
1809 break;
1810 case GL_INTENSITY:
1811 colorOut[0] = colorOut[1] = colorOut[2] = colorOut[3] = colorIn[0];
1812 break;
1813 default:
1814 COPY_4V(colorOut, colorIn);
1815 }
1816 }