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mesa/st: Simplify st_choose_matching_format().
[mesa.git] / src / mesa / state_tracker / st_format.c
1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
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 VMWARE 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/enums.h"
38 #include "main/formats.h"
39 #include "main/glformats.h"
40 #include "main/texcompress.h"
41 #include "main/texgetimage.h"
42 #include "main/teximage.h"
43 #include "main/texstore.h"
44 #include "main/image.h"
45 #include "main/macros.h"
46 #include "main/formatquery.h"
47
48 #include "pipe/p_context.h"
49 #include "pipe/p_defines.h"
50 #include "pipe/p_screen.h"
51 #include "util/format/u_format.h"
52 #include "st_cb_texture.h"
53 #include "st_context.h"
54 #include "st_format.h"
55 #include "st_texture.h"
56
57
58 /**
59 * Translate Mesa format to Gallium format.
60 */
61 enum pipe_format
62 st_mesa_format_to_pipe_format(const struct st_context *st,
63 mesa_format mesaFormat)
64 {
65 struct pipe_screen *screen = st->pipe->screen;
66
67 /* The destination RGBA format mustn't be changed, because it's also
68 * a destination format of the unpack/decompression function.
69 */
70 if (mesaFormat == MESA_FORMAT_ETC1_RGB8 && !st->has_etc1)
71 return PIPE_FORMAT_R8G8B8A8_UNORM;
72
73 /* ETC2 formats are emulated as uncompressed ones.
74 * The destination formats mustn't be changed, because they are also
75 * destination formats of the unpack/decompression function.
76 */
77 if (_mesa_is_format_etc2(mesaFormat) && !st->has_etc2) {
78 bool has_bgra_srgb = screen->is_format_supported(screen,
79 PIPE_FORMAT_B8G8R8A8_SRGB,
80 PIPE_TEXTURE_2D, 0, 0,
81 PIPE_BIND_SAMPLER_VIEW);
82
83 switch (mesaFormat) {
84 case MESA_FORMAT_ETC2_RGB8:
85 return PIPE_FORMAT_R8G8B8A8_UNORM;
86 case MESA_FORMAT_ETC2_SRGB8:
87 return has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB;
88 case MESA_FORMAT_ETC2_RGBA8_EAC:
89 return PIPE_FORMAT_R8G8B8A8_UNORM;
90 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
91 return has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB;
92 case MESA_FORMAT_ETC2_R11_EAC:
93 return PIPE_FORMAT_R16_UNORM;
94 case MESA_FORMAT_ETC2_RG11_EAC:
95 return PIPE_FORMAT_R16G16_UNORM;
96 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
97 return PIPE_FORMAT_R16_SNORM;
98 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
99 return PIPE_FORMAT_R16G16_SNORM;
100 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
101 return PIPE_FORMAT_R8G8B8A8_UNORM;
102 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
103 return has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB;
104 default:
105 unreachable("Unknown ETC2 format");
106 }
107 }
108
109 if (_mesa_is_format_astc_2d(mesaFormat) && !st->has_astc_2d_ldr) {
110 if (_mesa_is_format_srgb(mesaFormat))
111 return PIPE_FORMAT_R8G8B8A8_SRGB;
112 else
113 return PIPE_FORMAT_R8G8B8A8_UNORM;
114 }
115
116 return mesaFormat;
117 }
118
119
120 /**
121 * Translate Gallium format to Mesa format.
122 */
123 mesa_format
124 st_pipe_format_to_mesa_format(enum pipe_format format)
125 {
126 mesa_format mf = format;
127 if (!_mesa_get_format_name(mf))
128 return MESA_FORMAT_NONE;
129 return mf;
130 }
131
132 /**
133 * Map GL texture formats to Gallium pipe formats.
134 */
135 struct format_mapping
136 {
137 GLenum glFormats[18]; /**< list of GLenum formats, 0-terminated */
138 enum pipe_format pipeFormats[14]; /**< list of pipe formats, 0-terminated */
139 };
140
141
142 #define DEFAULT_RGBA_FORMATS \
143 PIPE_FORMAT_R8G8B8A8_UNORM, \
144 PIPE_FORMAT_B8G8R8A8_UNORM, \
145 PIPE_FORMAT_A8R8G8B8_UNORM, \
146 PIPE_FORMAT_A8B8G8R8_UNORM, \
147 0
148
149 #define DEFAULT_RGB_FORMATS \
150 PIPE_FORMAT_R8G8B8X8_UNORM, \
151 PIPE_FORMAT_B8G8R8X8_UNORM, \
152 PIPE_FORMAT_X8R8G8B8_UNORM, \
153 PIPE_FORMAT_X8B8G8R8_UNORM, \
154 PIPE_FORMAT_B5G6R5_UNORM, \
155 DEFAULT_RGBA_FORMATS
156
157 #define DEFAULT_SRGBA_FORMATS \
158 PIPE_FORMAT_R8G8B8A8_SRGB, \
159 PIPE_FORMAT_B8G8R8A8_SRGB, \
160 PIPE_FORMAT_A8R8G8B8_SRGB, \
161 PIPE_FORMAT_A8B8G8R8_SRGB, \
162 0
163
164 #define DEFAULT_DEPTH_FORMATS \
165 PIPE_FORMAT_Z24X8_UNORM, \
166 PIPE_FORMAT_X8Z24_UNORM, \
167 PIPE_FORMAT_Z16_UNORM, \
168 PIPE_FORMAT_Z24_UNORM_S8_UINT, \
169 PIPE_FORMAT_S8_UINT_Z24_UNORM, \
170 0
171
172 #define DEFAULT_SNORM8_RGBA_FORMATS \
173 PIPE_FORMAT_R8G8B8A8_SNORM, \
174 0
175
176 #define DEFAULT_UNORM16_RGBA_FORMATS \
177 PIPE_FORMAT_R16G16B16A16_UNORM, \
178 DEFAULT_RGBA_FORMATS
179
180
181 /**
182 * This table maps OpenGL texture format enums to Gallium pipe_format enums.
183 * Multiple GL enums might map to multiple pipe_formats.
184 * The first pipe format in the list that's supported is the one that's chosen.
185 */
186 static const struct format_mapping format_map[] = {
187 /* Basic RGB, RGBA formats */
188 {
189 { GL_RGB10, 0 },
190 { PIPE_FORMAT_R10G10B10X2_UNORM, PIPE_FORMAT_B10G10R10X2_UNORM,
191 PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
192 DEFAULT_RGB_FORMATS }
193 },
194 {
195 { GL_RGB10_A2, 0 },
196 { PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
197 DEFAULT_RGBA_FORMATS }
198 },
199 {
200 { 4, GL_RGBA, GL_RGBA8, 0 },
201 { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
202 },
203 {
204 { GL_BGRA, 0 },
205 { DEFAULT_RGBA_FORMATS }
206 },
207 {
208 { 3, GL_RGB, GL_RGB8, 0 },
209 { PIPE_FORMAT_R8G8B8X8_UNORM, DEFAULT_RGB_FORMATS }
210 },
211 {
212 { GL_RGB12, GL_RGB16, 0 },
213 { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
214 DEFAULT_RGB_FORMATS }
215 },
216 {
217 { GL_RGBA12, GL_RGBA16, 0 },
218 { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
219 },
220 {
221 { GL_RGBA4, GL_RGBA2, 0 },
222 { PIPE_FORMAT_B4G4R4A4_UNORM, PIPE_FORMAT_A4B4G4R4_UNORM,
223 DEFAULT_RGBA_FORMATS }
224 },
225 {
226 { GL_RGB5_A1, 0 },
227 { PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM,
228 DEFAULT_RGBA_FORMATS }
229 },
230 {
231 { GL_R3_G3_B2, 0 },
232 { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
233 PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGB_FORMATS }
234 },
235 {
236 { GL_RGB4 },
237 { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM,
238 PIPE_FORMAT_A4B4G4R4_UNORM,
239 DEFAULT_RGB_FORMATS }
240 },
241 {
242 { GL_RGB5 },
243 { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_X1B5G5R5_UNORM,
244 PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM,
245 DEFAULT_RGB_FORMATS }
246 },
247 {
248 { GL_RGB565 },
249 { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS }
250 },
251
252 /* basic Alpha formats */
253 {
254 { GL_ALPHA12, GL_ALPHA16, 0 },
255 { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
256 PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
257 },
258 {
259 { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
260 { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
261 },
262
263 /* basic Luminance formats */
264 {
265 { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
266 { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
267 PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
268 },
269 {
270 { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
271 { PIPE_FORMAT_L8_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGB_FORMATS }
272 },
273
274 /* basic Luminance/Alpha formats */
275 {
276 { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
277 GL_LUMINANCE16_ALPHA16, 0},
278 { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
279 PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
280 },
281 {
282 { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
283 { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
284 },
285 {
286 { GL_LUMINANCE4_ALPHA4, 0 },
287 { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
288 DEFAULT_RGBA_FORMATS }
289 },
290
291 /* basic Intensity formats */
292 {
293 { GL_INTENSITY12, GL_INTENSITY16, 0 },
294 { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
295 PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
296 },
297 {
298 { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
299 GL_COMPRESSED_INTENSITY, 0 },
300 { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
301 },
302
303 /* YCbCr */
304 {
305 { GL_YCBCR_MESA, 0 },
306 { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
307 },
308
309 /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
310 {
311 { GL_COMPRESSED_RGB, 0 },
312 { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
313 },
314 {
315 { GL_COMPRESSED_RGBA, 0 },
316 { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
317 },
318 {
319 { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
320 { PIPE_FORMAT_DXT1_RGB, 0 }
321 },
322 {
323 { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
324 { PIPE_FORMAT_DXT1_RGBA, 0 }
325 },
326 {
327 { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
328 { PIPE_FORMAT_DXT3_RGBA, 0 }
329 },
330 {
331 { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
332 { PIPE_FORMAT_DXT5_RGBA, 0 }
333 },
334
335 #if 0
336 {
337 { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
338 { PIPE_FORMAT_RGB_FXT1, 0 }
339 },
340 {
341 { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
342 { PIPE_FORMAT_RGBA_FXT1, 0 }
343 },
344 #endif
345
346 /* Depth formats */
347 {
348 { GL_DEPTH_COMPONENT16, 0 },
349 { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
350 },
351 {
352 { GL_DEPTH_COMPONENT24, 0 },
353 { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
354 DEFAULT_DEPTH_FORMATS }
355 },
356 {
357 { GL_DEPTH_COMPONENT32, 0 },
358 { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
359 },
360 {
361 { GL_DEPTH_COMPONENT, 0 },
362 { DEFAULT_DEPTH_FORMATS }
363 },
364 {
365 { GL_DEPTH_COMPONENT32F, 0 },
366 { PIPE_FORMAT_Z32_FLOAT, 0 }
367 },
368
369 /* stencil formats */
370 {
371 { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
372 GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
373 {
374 PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
375 PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
376 }
377 },
378
379 /* Depth / Stencil formats */
380 {
381 { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
382 { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
383 },
384 {
385 { GL_DEPTH32F_STENCIL8, 0 },
386 { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
387 },
388
389 /* sRGB formats */
390 {
391 { GL_SRGB_EXT, GL_SRGB8_EXT, 0 },
392 { PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB,
393 DEFAULT_SRGBA_FORMATS }
394 },
395 {
396 { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
397 { PIPE_FORMAT_R8G8B8A8_SRGB, DEFAULT_SRGBA_FORMATS }
398 },
399 {
400 { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
401 { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB,
402 PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS }
403 },
404 {
405 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
406 { PIPE_FORMAT_DXT1_SRGBA, 0 }
407 },
408 {
409 { GL_COMPRESSED_SRGB_ALPHA_EXT,
410 GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
411 { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
412 },
413 {
414 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
415 { PIPE_FORMAT_DXT5_SRGBA, 0 }
416 },
417 {
418 { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
419 GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
420 { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
421 },
422 {
423 { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT,
424 0 },
425 { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
426 },
427 {
428 { GL_SR8_EXT, 0 },
429 { PIPE_FORMAT_R8_SRGB, 0 }
430 },
431
432 /* 16-bit float formats */
433 {
434 { GL_RGBA16F_ARB, 0 },
435 { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
436 },
437 {
438 { GL_RGB16F_ARB, 0 },
439 { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT,
440 PIPE_FORMAT_R16G16B16A16_FLOAT,
441 PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
442 },
443 {
444 { GL_LUMINANCE_ALPHA16F_ARB, 0 },
445 { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
446 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
447 },
448 {
449 { GL_ALPHA16F_ARB, 0 },
450 { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
451 PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
452 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
453 },
454 {
455 { GL_INTENSITY16F_ARB, 0 },
456 { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
457 PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
458 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
459 },
460 {
461 { GL_LUMINANCE16F_ARB, 0 },
462 { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
463 PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
464 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
465 },
466 {
467 { GL_R16F, 0 },
468 { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
469 PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
470 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
471 },
472 {
473 { GL_RG16F, 0 },
474 { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
475 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
476 },
477
478 /* 32-bit float formats */
479 {
480 { GL_RGBA32F_ARB, 0 },
481 { PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
482 },
483 {
484 { GL_RGB32F_ARB, 0 },
485 { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT,
486 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
487 },
488 {
489 { GL_LUMINANCE_ALPHA32F_ARB, 0 },
490 { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
491 },
492 {
493 { GL_ALPHA32F_ARB, 0 },
494 { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
495 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
496 },
497 {
498 { GL_INTENSITY32F_ARB, 0 },
499 { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
500 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
501 },
502 {
503 { GL_LUMINANCE32F_ARB, 0 },
504 { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
505 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
506 },
507 {
508 { GL_R32F, 0 },
509 { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
510 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
511 },
512 {
513 { GL_RG32F, 0 },
514 { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
515 },
516
517 /* R, RG formats */
518 {
519 { GL_RED, GL_R8, 0 },
520 { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
521 },
522 {
523 { GL_RG, GL_RG8, 0 },
524 { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
525 },
526 {
527 { GL_R16, 0 },
528 { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
529 DEFAULT_UNORM16_RGBA_FORMATS }
530 },
531 {
532 { GL_RG16, 0 },
533 { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
534 },
535
536 /* compressed R, RG formats */
537 {
538 { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
539 { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
540 },
541 {
542 { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
543 { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
544 },
545 {
546 { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
547 { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
548 },
549 {
550 { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
551 { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
552 },
553 {
554 { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
555 { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
556 },
557 {
558 { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
559 { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
560 },
561 {
562 { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
563 GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
564 { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
565 },
566 {
567 { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
568 { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
569 },
570
571 /* ETC1 */
572 {
573 { GL_ETC1_RGB8_OES, 0 },
574 { PIPE_FORMAT_ETC1_RGB8, 0 }
575 },
576
577 /* ETC2 */
578 {
579 { GL_COMPRESSED_RGB8_ETC2, 0 },
580 { PIPE_FORMAT_ETC2_RGB8, 0 }
581 },
582 {
583 { GL_COMPRESSED_SRGB8_ETC2, 0 },
584 { PIPE_FORMAT_ETC2_SRGB8, 0 }
585 },
586 {
587 { GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 },
588 { PIPE_FORMAT_ETC2_RGB8A1, 0 }
589 },
590 {
591 { GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 },
592 { PIPE_FORMAT_ETC2_SRGB8A1, 0 }
593 },
594 {
595 { GL_COMPRESSED_RGBA8_ETC2_EAC, 0 },
596 { PIPE_FORMAT_ETC2_RGBA8, 0 }
597 },
598 {
599 { GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 0 },
600 { PIPE_FORMAT_ETC2_SRGBA8, 0 }
601 },
602 {
603 { GL_COMPRESSED_R11_EAC, 0 },
604 { PIPE_FORMAT_ETC2_R11_UNORM, 0 }
605 },
606 {
607 { GL_COMPRESSED_SIGNED_R11_EAC, 0 },
608 { PIPE_FORMAT_ETC2_R11_SNORM, 0 }
609 },
610 {
611 { GL_COMPRESSED_RG11_EAC, 0 },
612 { PIPE_FORMAT_ETC2_RG11_UNORM, 0 }
613 },
614 {
615 { GL_COMPRESSED_SIGNED_RG11_EAC, 0 },
616 { PIPE_FORMAT_ETC2_RG11_SNORM, 0 }
617 },
618
619 /* BPTC */
620 {
621 { GL_COMPRESSED_RGBA_BPTC_UNORM, 0 },
622 { PIPE_FORMAT_BPTC_RGBA_UNORM, 0 },
623 },
624 {
625 { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, 0 },
626 { PIPE_FORMAT_BPTC_SRGBA, 0 },
627 },
628 {
629 { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, 0 },
630 { PIPE_FORMAT_BPTC_RGB_FLOAT, 0 },
631 },
632 {
633 { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, 0 },
634 { PIPE_FORMAT_BPTC_RGB_UFLOAT, 0 },
635 },
636
637 /* ASTC */
638 {
639 { GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 0 },
640 { PIPE_FORMAT_ASTC_4x4, 0},
641 },
642 {
643 { GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 0 },
644 { PIPE_FORMAT_ASTC_5x4, 0},
645 },
646 {
647 { GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 0 },
648 { PIPE_FORMAT_ASTC_5x5, 0},
649 },
650 {
651 { GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 0 },
652 { PIPE_FORMAT_ASTC_6x5, 0},
653 },
654 {
655 { GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 0 },
656 { PIPE_FORMAT_ASTC_6x6, 0},
657 },
658 {
659 { GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 0 },
660 { PIPE_FORMAT_ASTC_8x5, 0},
661 },
662 {
663 { GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 0 },
664 { PIPE_FORMAT_ASTC_8x6, 0},
665 },
666 {
667 { GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 0 },
668 { PIPE_FORMAT_ASTC_8x8, 0},
669 },
670 {
671 { GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 0 },
672 { PIPE_FORMAT_ASTC_10x5, 0},
673 },
674 {
675 { GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 0 },
676 { PIPE_FORMAT_ASTC_10x6, 0},
677 },
678 {
679 { GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 0 },
680 { PIPE_FORMAT_ASTC_10x8, 0},
681 },
682 {
683 { GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 0 },
684 { PIPE_FORMAT_ASTC_10x10, 0},
685 },
686 {
687 { GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 0 },
688 { PIPE_FORMAT_ASTC_12x10, 0},
689 },
690 {
691 { GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 0 },
692 { PIPE_FORMAT_ASTC_12x12, 0},
693 },
694
695 {
696 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, 0 },
697 { PIPE_FORMAT_ASTC_4x4_SRGB, 0},
698 },
699 {
700 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, 0 },
701 { PIPE_FORMAT_ASTC_5x4_SRGB, 0},
702 },
703 {
704 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, 0 },
705 { PIPE_FORMAT_ASTC_5x5_SRGB, 0},
706 },
707 {
708 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, 0 },
709 { PIPE_FORMAT_ASTC_6x5_SRGB, 0},
710 },
711 {
712 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, 0 },
713 { PIPE_FORMAT_ASTC_6x6_SRGB, 0},
714 },
715 {
716 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, 0 },
717 { PIPE_FORMAT_ASTC_8x5_SRGB, 0},
718 },
719 {
720 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, 0 },
721 { PIPE_FORMAT_ASTC_8x6_SRGB, 0},
722 },
723 {
724 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, 0 },
725 { PIPE_FORMAT_ASTC_8x8_SRGB, 0},
726 },
727 {
728 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, 0 },
729 { PIPE_FORMAT_ASTC_10x5_SRGB, 0},
730 },
731 {
732 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, 0 },
733 { PIPE_FORMAT_ASTC_10x6_SRGB, 0},
734 },
735 {
736 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, 0 },
737 { PIPE_FORMAT_ASTC_10x8_SRGB, 0},
738 },
739 {
740 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, 0 },
741 { PIPE_FORMAT_ASTC_10x10_SRGB, 0},
742 },
743 {
744 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, 0 },
745 { PIPE_FORMAT_ASTC_12x10_SRGB, 0},
746 },
747 {
748 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, 0 },
749 { PIPE_FORMAT_ASTC_12x12_SRGB, 0},
750 },
751
752 /* signed/unsigned integer formats.
753 */
754 {
755 { GL_RGBA_INTEGER_EXT,
756 GL_BGRA_INTEGER_EXT,
757 GL_RGBA8I_EXT, 0 },
758 { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
759 },
760 {
761 { GL_RGB_INTEGER_EXT,
762 GL_BGR_INTEGER_EXT,
763 GL_RGB8I_EXT,
764 GL_BLUE_INTEGER_EXT, 0 },
765 { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT,
766 PIPE_FORMAT_R8G8B8A8_SINT, 0 }
767 },
768 {
769 { GL_ALPHA_INTEGER_EXT,
770 GL_ALPHA8I_EXT, 0 },
771 { PIPE_FORMAT_A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
772 },
773 {
774 { GL_ALPHA16I_EXT, 0 },
775 { PIPE_FORMAT_A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
776 },
777 {
778 { GL_ALPHA32I_EXT, 0 },
779 { PIPE_FORMAT_A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
780 },
781 {
782 { GL_ALPHA8UI_EXT, 0 },
783 { PIPE_FORMAT_A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
784 },
785 {
786 { GL_ALPHA16UI_EXT, 0 },
787 { PIPE_FORMAT_A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
788 },
789 {
790 { GL_ALPHA32UI_EXT, 0 },
791 { PIPE_FORMAT_A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
792 },
793 {
794 { GL_INTENSITY8I_EXT, 0 },
795 { PIPE_FORMAT_I8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
796 },
797 {
798 { GL_INTENSITY16I_EXT, 0 },
799 { PIPE_FORMAT_I16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
800 },
801 {
802 { GL_INTENSITY32I_EXT, 0 },
803 { PIPE_FORMAT_I32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
804 },
805 {
806 { GL_INTENSITY8UI_EXT, 0 },
807 { PIPE_FORMAT_I8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
808 },
809 {
810 { GL_INTENSITY16UI_EXT, 0 },
811 { PIPE_FORMAT_I16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
812 },
813 {
814 { GL_INTENSITY32UI_EXT, 0 },
815 { PIPE_FORMAT_I32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
816 },
817 {
818 { GL_LUMINANCE8I_EXT, 0 },
819 { PIPE_FORMAT_L8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
820 },
821 {
822 { GL_LUMINANCE16I_EXT, 0 },
823 { PIPE_FORMAT_L16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
824 },
825 {
826 { GL_LUMINANCE32I_EXT, 0 },
827 { PIPE_FORMAT_L32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
828 },
829 {
830 { GL_LUMINANCE_INTEGER_EXT,
831 GL_LUMINANCE8UI_EXT, 0 },
832 { PIPE_FORMAT_L8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
833 },
834 {
835 { GL_LUMINANCE16UI_EXT, 0 },
836 { PIPE_FORMAT_L16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
837 },
838 {
839 { GL_LUMINANCE32UI_EXT, 0 },
840 { PIPE_FORMAT_L32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
841 },
842 {
843 { GL_LUMINANCE_ALPHA_INTEGER_EXT,
844 GL_LUMINANCE_ALPHA8I_EXT, 0 },
845 { PIPE_FORMAT_L8A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
846 },
847 {
848 { GL_LUMINANCE_ALPHA16I_EXT, 0 },
849 { PIPE_FORMAT_L16A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
850 },
851 {
852 { GL_LUMINANCE_ALPHA32I_EXT, 0 },
853 { PIPE_FORMAT_L32A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
854 },
855 {
856 { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
857 { PIPE_FORMAT_L8A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
858 },
859 {
860 { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
861 { PIPE_FORMAT_L16A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
862 },
863 {
864 { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
865 { PIPE_FORMAT_L32A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
866 },
867 {
868 { GL_RGB16I_EXT, 0 },
869 { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT,
870 PIPE_FORMAT_R16G16B16A16_SINT, 0 },
871 },
872 {
873 { GL_RGBA16I_EXT, 0 },
874 { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
875 },
876 {
877 { GL_RGB32I_EXT, 0 },
878 { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT,
879 PIPE_FORMAT_R32G32B32A32_SINT, 0 },
880 },
881 {
882 { GL_RGBA32I_EXT, 0 },
883 { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
884 },
885 {
886 { GL_RGBA8UI_EXT, 0 },
887 { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
888 },
889 {
890 { GL_RGB8UI_EXT, 0 },
891 { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT,
892 PIPE_FORMAT_R8G8B8A8_UINT, 0 }
893 },
894 {
895 { GL_RGB16UI_EXT, 0 },
896 { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT,
897 PIPE_FORMAT_R16G16B16A16_UINT, 0 }
898 },
899 {
900 { GL_RGBA16UI_EXT, 0 },
901 { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
902 },
903 {
904 { GL_RGB32UI_EXT, 0},
905 { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT,
906 PIPE_FORMAT_R32G32B32A32_UINT, 0 }
907 },
908 {
909 { GL_RGBA32UI_EXT, 0},
910 { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
911 },
912 {
913 { GL_R8I, GL_RED_INTEGER_EXT, 0},
914 { PIPE_FORMAT_R8_SINT, 0},
915 },
916 {
917 { GL_R16I, 0},
918 { PIPE_FORMAT_R16_SINT, 0},
919 },
920 {
921 { GL_R32I, 0},
922 { PIPE_FORMAT_R32_SINT, 0},
923 },
924 {
925 { GL_R8UI, 0},
926 { PIPE_FORMAT_R8_UINT, 0},
927 },
928 {
929 { GL_R16UI, 0},
930 { PIPE_FORMAT_R16_UINT, 0},
931 },
932 {
933 { GL_R32UI, 0},
934 { PIPE_FORMAT_R32_UINT, 0},
935 },
936 {
937 { GL_RG8I, GL_GREEN_INTEGER_EXT, 0},
938 { PIPE_FORMAT_R8G8_SINT, 0},
939 },
940 {
941 { GL_RG16I, 0},
942 { PIPE_FORMAT_R16G16_SINT, 0},
943 },
944 {
945 { GL_RG32I, 0},
946 { PIPE_FORMAT_R32G32_SINT, 0},
947 },
948 {
949 { GL_RG8UI, 0},
950 { PIPE_FORMAT_R8G8_UINT, 0},
951 },
952 {
953 { GL_RG16UI, 0},
954 { PIPE_FORMAT_R16G16_UINT, 0},
955 },
956 {
957 { GL_RG32UI, 0},
958 { PIPE_FORMAT_R32G32_UINT, 0},
959 },
960 /* signed normalized formats */
961 {
962 { GL_RED_SNORM, GL_R8_SNORM, 0 },
963 { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
964 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
965 },
966 {
967 { GL_R16_SNORM, 0 },
968 { PIPE_FORMAT_R16_SNORM,
969 PIPE_FORMAT_R16G16_SNORM,
970 PIPE_FORMAT_R16G16B16A16_SNORM,
971 PIPE_FORMAT_R8_SNORM,
972 PIPE_FORMAT_R8G8_SNORM,
973 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
974 },
975 {
976 { GL_RG_SNORM, GL_RG8_SNORM, 0 },
977 { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
978 },
979 {
980 { GL_RG16_SNORM, 0 },
981 { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
982 PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
983 },
984 {
985 { GL_RGB_SNORM, GL_RGB8_SNORM, 0 },
986 { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
987 },
988 {
989 { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
990 { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
991 },
992 {
993 { GL_RGB16_SNORM, 0 },
994 { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
995 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
996 },
997 {
998 { GL_RGBA16_SNORM, 0 },
999 { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1000 },
1001 {
1002 { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1003 { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1004 },
1005 {
1006 { GL_ALPHA16_SNORM, 0 },
1007 { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1008 PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1009 },
1010 {
1011 { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1012 { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1013 },
1014 {
1015 { GL_LUMINANCE16_SNORM, 0 },
1016 { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1017 PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1018 },
1019 {
1020 { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1021 { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1022 },
1023 {
1024 { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1025 { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1026 PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1027 },
1028 {
1029 { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1030 { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1031 },
1032 {
1033 { GL_INTENSITY16_SNORM, 0 },
1034 { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1035 PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1036 },
1037 {
1038 { GL_RGB9_E5, 0 },
1039 { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1040 },
1041 {
1042 { GL_R11F_G11F_B10F, 0 },
1043 { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1044 },
1045 {
1046 { GL_RGB10_A2UI, 0 },
1047 { PIPE_FORMAT_R10G10B10A2_UINT, PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1048 },
1049 };
1050
1051
1052 /**
1053 * Return first supported format from the given list.
1054 * \param allow_dxt indicates whether it's OK to return a DXT format.
1055 */
1056 static enum pipe_format
1057 find_supported_format(struct pipe_screen *screen,
1058 const enum pipe_format formats[],
1059 enum pipe_texture_target target,
1060 unsigned sample_count,
1061 unsigned storage_sample_count,
1062 unsigned bindings,
1063 boolean allow_dxt)
1064 {
1065 uint i;
1066 for (i = 0; formats[i]; i++) {
1067 if (screen->is_format_supported(screen, formats[i], target,
1068 sample_count, storage_sample_count,
1069 bindings)) {
1070 if (!allow_dxt && util_format_is_s3tc(formats[i])) {
1071 /* we can't return a dxt format, continue searching */
1072 continue;
1073 }
1074
1075 return formats[i];
1076 }
1077 }
1078 return PIPE_FORMAT_NONE;
1079 }
1080
1081
1082 struct exact_format_mapping
1083 {
1084 GLenum format;
1085 GLenum type;
1086 enum pipe_format pformat;
1087 };
1088
1089 static const struct exact_format_mapping rgba8888_tbl[] =
1090 {
1091 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_ABGR8888_UNORM },
1092 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_ABGR8888_UNORM },
1093 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_RGBA8888_UNORM },
1094 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_RGBA8888_UNORM },
1095 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_ARGB8888_UNORM },
1096 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_BGRA8888_UNORM },
1097 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8A8_UNORM },
1098 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_A8B8G8R8_UNORM },
1099 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8A8_UNORM },
1100 { 0, 0, 0 }
1101 };
1102
1103 static const struct exact_format_mapping rgbx8888_tbl[] =
1104 {
1105 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_XBGR8888_UNORM },
1106 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_XBGR8888_UNORM },
1107 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_RGBX8888_UNORM },
1108 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_RGBX8888_UNORM },
1109 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_XRGB8888_UNORM },
1110 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_BGRX8888_UNORM },
1111 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8X8_UNORM },
1112 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_X8B8G8R8_UNORM },
1113 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8X8_UNORM },
1114 { 0, 0, 0 }
1115 };
1116
1117
1118 /**
1119 * For unsized/base internal formats, we may choose a convenient effective
1120 * internal format for {format, type}. If one exists, return that, otherwise
1121 * return PIPE_FORMAT_NONE.
1122 */
1123 static enum pipe_format
1124 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1125 {
1126 uint i;
1127 const struct exact_format_mapping* tbl;
1128
1129 if (format == GL_NONE || type == GL_NONE)
1130 return PIPE_FORMAT_NONE;
1131
1132 switch (internalFormat) {
1133 case 4:
1134 case GL_RGBA:
1135 tbl = rgba8888_tbl;
1136 break;
1137 case 3:
1138 case GL_RGB:
1139 tbl = rgbx8888_tbl;
1140 break;
1141 default:
1142 return PIPE_FORMAT_NONE;
1143 }
1144
1145 for (i = 0; tbl[i].format; i++)
1146 if (tbl[i].format == format && tbl[i].type == type)
1147 return tbl[i].pformat;
1148
1149 return PIPE_FORMAT_NONE;
1150 }
1151
1152
1153 /**
1154 * Given an OpenGL internalFormat value for a texture or surface, return
1155 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1156 * This is called during glTexImage2D, for example.
1157 *
1158 * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1159 * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1160 * we want render-to-texture ability.
1161 *
1162 * \param internalFormat the user value passed to glTexImage2D
1163 * \param target one of PIPE_TEXTURE_x
1164 * \param bindings bitmask of PIPE_BIND_x flags.
1165 * \param allow_dxt indicates whether it's OK to return a DXT format. This
1166 * only matters when internalFormat names a generic or
1167 * specific compressed format. And that should only happen
1168 * when we're getting called from gl[Copy]TexImage().
1169 */
1170 enum pipe_format
1171 st_choose_format(struct st_context *st, GLenum internalFormat,
1172 GLenum format, GLenum type,
1173 enum pipe_texture_target target, unsigned sample_count,
1174 unsigned storage_sample_count,
1175 unsigned bindings, boolean allow_dxt)
1176 {
1177 struct pipe_screen *screen = st->pipe->screen;
1178 unsigned i;
1179 int j;
1180 enum pipe_format pf;
1181
1182 /* can't render to compressed formats at this time */
1183 if (_mesa_is_compressed_format(st->ctx, internalFormat)
1184 && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1185 return PIPE_FORMAT_NONE;
1186 }
1187
1188 /* search for exact matches */
1189 pf = find_exact_format(internalFormat, format, type);
1190 if (pf != PIPE_FORMAT_NONE &&
1191 screen->is_format_supported(screen, pf, target, sample_count,
1192 storage_sample_count, bindings)) {
1193 goto success;
1194 }
1195
1196 /* For an unsized GL_RGB but a 2_10_10_10 type, try to pick one of the
1197 * 2_10_10_10 formats. This is important for
1198 * GL_EXT_texture_type_2_10_10_10_EXT support, which says that these
1199 * formats are not color-renderable. Mesa's check for making those
1200 * non-color-renderable is based on our chosen format being 2101010.
1201 */
1202 if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
1203 if (internalFormat == GL_RGB)
1204 internalFormat = GL_RGB10;
1205 else if (internalFormat == GL_RGBA)
1206 internalFormat = GL_RGB10_A2;
1207 }
1208
1209 if (type == GL_UNSIGNED_SHORT_5_5_5_1) {
1210 if (internalFormat == GL_RGB)
1211 internalFormat = GL_RGB5;
1212 else if (internalFormat == GL_RGBA)
1213 internalFormat = GL_RGB5_A1;
1214 }
1215
1216 /* search table for internalFormat */
1217 for (i = 0; i < ARRAY_SIZE(format_map); i++) {
1218 const struct format_mapping *mapping = &format_map[i];
1219 for (j = 0; mapping->glFormats[j]; j++) {
1220 if (mapping->glFormats[j] == internalFormat) {
1221 /* Found the desired internal format. Find first pipe format
1222 * which is supported by the driver.
1223 */
1224 pf = find_supported_format(screen, mapping->pipeFormats,
1225 target, sample_count,
1226 storage_sample_count, bindings,
1227 allow_dxt);
1228 goto success;
1229 }
1230 }
1231 }
1232
1233 _mesa_problem(NULL, "unhandled format!\n");
1234 return PIPE_FORMAT_NONE;
1235
1236 success:
1237 if (0) {
1238 debug_printf("%s(fmt=%s, type=%s, intFmt=%s) = %s\n",
1239 __FUNCTION__,
1240 _mesa_enum_to_string(format),
1241 _mesa_enum_to_string(type),
1242 _mesa_enum_to_string(internalFormat),
1243 util_format_name(pf));
1244 }
1245 return pf;
1246 }
1247
1248
1249 /**
1250 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1251 */
1252 enum pipe_format
1253 st_choose_renderbuffer_format(struct st_context *st,
1254 GLenum internalFormat, unsigned sample_count,
1255 unsigned storage_sample_count)
1256 {
1257 unsigned bindings;
1258 if (_mesa_is_depth_or_stencil_format(internalFormat))
1259 bindings = PIPE_BIND_DEPTH_STENCIL;
1260 else
1261 bindings = PIPE_BIND_RENDER_TARGET;
1262 return st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1263 PIPE_TEXTURE_2D, sample_count,
1264 storage_sample_count, bindings, FALSE);
1265 }
1266
1267
1268 /**
1269 * Given an OpenGL user-requested format and type, and swapBytes state,
1270 * return the format which exactly matches those parameters, so that
1271 * a memcpy-based transfer can be done.
1272 *
1273 * If no format is supported, return PIPE_FORMAT_NONE.
1274 */
1275 enum pipe_format
1276 st_choose_matching_format(struct st_context *st, unsigned bind,
1277 GLenum format, GLenum type, GLboolean swapBytes)
1278 {
1279 struct pipe_screen *screen = st->pipe->screen;
1280
1281 if (swapBytes && !_mesa_swap_bytes_in_type_enum(&type))
1282 return PIPE_FORMAT_NONE;
1283
1284 mesa_format mesa_format = _mesa_format_from_format_and_type(format, type);
1285 if (_mesa_format_is_mesa_array_format(mesa_format))
1286 mesa_format = _mesa_format_from_array_format(mesa_format);
1287 if (mesa_format != MESA_FORMAT_NONE) {
1288 enum pipe_format format = st_mesa_format_to_pipe_format(st, mesa_format);
1289 if (format != PIPE_FORMAT_NONE &&
1290 screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0, 0, bind))
1291 return format;
1292 }
1293
1294 return PIPE_FORMAT_NONE;
1295 }
1296
1297
1298 /**
1299 * Called via ctx->Driver.ChooseTextureFormat().
1300 */
1301 mesa_format
1302 st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
1303 GLint internalFormat,
1304 GLenum format, GLenum type)
1305 {
1306 struct st_context *st = st_context(ctx);
1307 enum pipe_format pFormat;
1308 mesa_format mFormat;
1309 unsigned bindings;
1310 bool is_renderbuffer = false;
1311 enum pipe_texture_target pTarget;
1312
1313 if (target == GL_RENDERBUFFER) {
1314 pTarget = PIPE_TEXTURE_2D;
1315 is_renderbuffer = true;
1316 } else {
1317 pTarget = gl_target_to_pipe(target);
1318 }
1319
1320 if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) {
1321 /* We don't do compression for these texture targets because of
1322 * difficulty with sub-texture updates on non-block boundaries, etc.
1323 * So change the internal format request to an uncompressed format.
1324 */
1325 internalFormat =
1326 _mesa_generic_compressed_format_to_uncompressed_format(internalFormat);
1327 }
1328
1329 /* GL textures may wind up being render targets, but we don't know
1330 * that in advance. Specify potential render target flags now for formats
1331 * that we know should always be renderable.
1332 */
1333 bindings = PIPE_BIND_SAMPLER_VIEW;
1334 if (_mesa_is_depth_or_stencil_format(internalFormat))
1335 bindings |= PIPE_BIND_DEPTH_STENCIL;
1336 else if (is_renderbuffer || internalFormat == 3 || internalFormat == 4 ||
1337 internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1338 internalFormat == GL_RGBA2 ||
1339 internalFormat == GL_RGB4 || internalFormat == GL_RGBA4 ||
1340 internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1341 internalFormat == GL_BGRA ||
1342 internalFormat == GL_RGB16F ||
1343 internalFormat == GL_RGBA16F ||
1344 internalFormat == GL_RGB32F ||
1345 internalFormat == GL_RGBA32F)
1346 bindings |= PIPE_BIND_RENDER_TARGET;
1347
1348 /* GLES allows the driver to choose any format which matches
1349 * the format+type combo, because GLES only supports unsized internal
1350 * formats and expects the driver to choose whatever suits it.
1351 */
1352 if (_mesa_is_gles(ctx)) {
1353 GLenum baseFormat = _mesa_base_tex_format(ctx, internalFormat);
1354 GLenum basePackFormat = _mesa_base_pack_format(format);
1355 GLenum iformat = internalFormat;
1356
1357 /* Treat GL_BGRA as GL_RGBA. */
1358 if (iformat == GL_BGRA)
1359 iformat = GL_RGBA;
1360
1361 /* Check if the internalformat is unsized and compatible
1362 * with the "format".
1363 */
1364 if (iformat == baseFormat && iformat == basePackFormat) {
1365 pFormat = st_choose_matching_format(st, bindings, format, type,
1366 ctx->Unpack.SwapBytes);
1367
1368 if (pFormat != PIPE_FORMAT_NONE)
1369 return st_pipe_format_to_mesa_format(pFormat);
1370
1371 if (!is_renderbuffer) {
1372 /* try choosing format again, this time without render
1373 * target bindings.
1374 */
1375 pFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
1376 format, type,
1377 ctx->Unpack.SwapBytes);
1378 if (pFormat != PIPE_FORMAT_NONE)
1379 return st_pipe_format_to_mesa_format(pFormat);
1380 }
1381 }
1382 }
1383
1384 pFormat = st_choose_format(st, internalFormat, format, type,
1385 pTarget, 0, 0, bindings, GL_TRUE);
1386
1387 if (pFormat == PIPE_FORMAT_NONE && !is_renderbuffer) {
1388 /* try choosing format again, this time without render target bindings */
1389 pFormat = st_choose_format(st, internalFormat, format, type,
1390 pTarget, 0, 0, PIPE_BIND_SAMPLER_VIEW,
1391 GL_TRUE);
1392 }
1393
1394 if (pFormat == PIPE_FORMAT_NONE) {
1395 mFormat = _mesa_glenum_to_compressed_format(internalFormat);
1396 if (st_compressed_format_fallback(st, mFormat))
1397 return mFormat;
1398
1399 /* no luck at all */
1400 return MESA_FORMAT_NONE;
1401 }
1402
1403 mFormat = st_pipe_format_to_mesa_format(pFormat);
1404
1405 /* Debugging aid */
1406 if (0) {
1407 debug_printf("%s(intFormat=%s, format=%s, type=%s) -> %s, %s\n",
1408 __func__,
1409 _mesa_enum_to_string(internalFormat),
1410 _mesa_enum_to_string(format),
1411 _mesa_enum_to_string(type),
1412 util_format_name(pFormat),
1413 _mesa_get_format_name(mFormat));
1414 }
1415
1416 return mFormat;
1417 }
1418
1419
1420 /**
1421 * Called via ctx->Driver.QueryInternalFormat().
1422 */
1423 static size_t
1424 st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target,
1425 GLenum internalFormat, int samples[16])
1426 {
1427 struct st_context *st = st_context(ctx);
1428 enum pipe_format format;
1429 unsigned i, bind, num_sample_counts = 0;
1430
1431 (void) target;
1432
1433 if (_mesa_is_depth_or_stencil_format(internalFormat))
1434 bind = PIPE_BIND_DEPTH_STENCIL;
1435 else
1436 bind = PIPE_BIND_RENDER_TARGET;
1437
1438 /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
1439 * formats.
1440 */
1441 if (!ctx->Extensions.EXT_sRGB) {
1442 internalFormat = _mesa_get_linear_internalformat(internalFormat);
1443 }
1444
1445 /* Set sample counts in descending order. */
1446 for (i = 16; i > 1; i--) {
1447 format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1448 PIPE_TEXTURE_2D, i, i, bind, FALSE);
1449
1450 if (format != PIPE_FORMAT_NONE) {
1451 samples[num_sample_counts++] = i;
1452 }
1453 }
1454
1455 if (!num_sample_counts) {
1456 samples[num_sample_counts++] = 1;
1457 }
1458
1459 return num_sample_counts;
1460 }
1461
1462
1463 /**
1464 * ARB_internalformat_query2 driver hook.
1465 */
1466 void
1467 st_QueryInternalFormat(struct gl_context *ctx, GLenum target,
1468 GLenum internalFormat, GLenum pname, GLint *params)
1469 {
1470 struct st_context *st = st_context(ctx);
1471 /* The API entry-point gives us a temporary params buffer that is non-NULL
1472 * and guaranteed to have at least 16 elements.
1473 */
1474 assert(params != NULL);
1475
1476 switch (pname) {
1477 case GL_SAMPLES:
1478 st_QuerySamplesForFormat(ctx, target, internalFormat, params);
1479 break;
1480
1481 case GL_NUM_SAMPLE_COUNTS: {
1482 int samples[16];
1483 size_t num_samples;
1484 num_samples = st_QuerySamplesForFormat(ctx, target, internalFormat,
1485 samples);
1486 params[0] = (GLint) num_samples;
1487 break;
1488 }
1489 case GL_INTERNALFORMAT_PREFERRED: {
1490 params[0] = GL_NONE;
1491
1492 /* We need to resolve an internal format that is compatible with
1493 * the passed internal format, and optimal to the driver. By now,
1494 * we just validate that the passed internal format is supported by
1495 * the driver, and if so return the same internal format, otherwise
1496 * return GL_NONE.
1497 */
1498 unsigned bindings;
1499 if (_mesa_is_depth_or_stencil_format(internalFormat))
1500 bindings = PIPE_BIND_DEPTH_STENCIL;
1501 else
1502 bindings = PIPE_BIND_RENDER_TARGET;
1503 enum pipe_format pformat = st_choose_format(st,
1504 internalFormat,
1505 GL_NONE,
1506 GL_NONE,
1507 PIPE_TEXTURE_2D, 0, 0,
1508 bindings, FALSE);
1509 if (pformat)
1510 params[0] = internalFormat;
1511 break;
1512 }
1513 default:
1514 /* For the rest of the pnames, we call back the Mesa's default
1515 * function for drivers that don't implement ARB_internalformat_query2.
1516 */
1517 _mesa_query_internal_format_default(ctx, target, internalFormat, pname,
1518 params);
1519 }
1520 }
1521
1522
1523 /**
1524 * This is used for translating texture border color and the clear
1525 * color. For example, the clear color is interpreted according to
1526 * the renderbuffer's base format. For example, if clearing a
1527 * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
1528 * colorOut[2] = colorIn[0].
1529 * Similarly for texture border colors.
1530 */
1531 void
1532 st_translate_color(const union gl_color_union *colorIn,
1533 union pipe_color_union *colorOut,
1534 GLenum baseFormat, GLboolean is_integer)
1535 {
1536 if (is_integer) {
1537 const int *in = colorIn->i;
1538 int *out = colorOut->i;
1539
1540 switch (baseFormat) {
1541 case GL_RED:
1542 out[0] = in[0];
1543 out[1] = 0;
1544 out[2] = 0;
1545 out[3] = 1;
1546 break;
1547 case GL_RG:
1548 out[0] = in[0];
1549 out[1] = in[1];
1550 out[2] = 0;
1551 out[3] = 1;
1552 break;
1553 case GL_RGB:
1554 out[0] = in[0];
1555 out[1] = in[1];
1556 out[2] = in[2];
1557 out[3] = 1;
1558 break;
1559 case GL_ALPHA:
1560 out[0] = out[1] = out[2] = 0;
1561 out[3] = in[3];
1562 break;
1563 case GL_LUMINANCE:
1564 out[0] = out[1] = out[2] = in[0];
1565 out[3] = 1;
1566 break;
1567 case GL_LUMINANCE_ALPHA:
1568 out[0] = out[1] = out[2] = in[0];
1569 out[3] = in[3];
1570 break;
1571 case GL_INTENSITY:
1572 out[0] = out[1] = out[2] = out[3] = in[0];
1573 break;
1574 default:
1575 COPY_4V(out, in);
1576 }
1577 }
1578 else {
1579 const float *in = colorIn->f;
1580 float *out = colorOut->f;
1581
1582 switch (baseFormat) {
1583 case GL_RED:
1584 out[0] = in[0];
1585 out[1] = 0.0F;
1586 out[2] = 0.0F;
1587 out[3] = 1.0F;
1588 break;
1589 case GL_RG:
1590 out[0] = in[0];
1591 out[1] = in[1];
1592 out[2] = 0.0F;
1593 out[3] = 1.0F;
1594 break;
1595 case GL_RGB:
1596 out[0] = in[0];
1597 out[1] = in[1];
1598 out[2] = in[2];
1599 out[3] = 1.0F;
1600 break;
1601 case GL_ALPHA:
1602 out[0] = out[1] = out[2] = 0.0F;
1603 out[3] = in[3];
1604 break;
1605 case GL_LUMINANCE:
1606 out[0] = out[1] = out[2] = in[0];
1607 out[3] = 1.0F;
1608 break;
1609 case GL_LUMINANCE_ALPHA:
1610 out[0] = out[1] = out[2] = in[0];
1611 out[3] = in[3];
1612 break;
1613 /* Stencil border is tricky on some hw. Help drivers a little here. */
1614 case GL_STENCIL_INDEX:
1615 case GL_INTENSITY:
1616 out[0] = out[1] = out[2] = out[3] = in[0];
1617 break;
1618 default:
1619 COPY_4V(out, in);
1620 }
1621 }
1622 }