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
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
st_mesa_format_to_pipe_format(const struct st_context * st,mesa_format mesaFormat)62 st_mesa_format_to_pipe_format(const struct st_context *st,
63 mesa_format mesaFormat)
64 {
65 struct pipe_screen *screen = st->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 st->transcode_etc ? PIPE_FORMAT_DXT1_RGB : 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 st->transcode_etc ? PIPE_FORMAT_DXT1_RGB : PIPE_FORMAT_R8G8B8A8_UNORM;
86 case MESA_FORMAT_ETC2_SRGB8:
87 return st->transcode_etc ? PIPE_FORMAT_DXT1_SRGB :
88 has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB;
89 case MESA_FORMAT_ETC2_RGBA8_EAC:
90 return st->transcode_etc ? PIPE_FORMAT_DXT5_RGBA : PIPE_FORMAT_R8G8B8A8_UNORM;
91 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
92 return st->transcode_etc ? PIPE_FORMAT_DXT5_SRGBA :
93 has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB;
94 case MESA_FORMAT_ETC2_R11_EAC:
95 return PIPE_FORMAT_R16_UNORM;
96 case MESA_FORMAT_ETC2_RG11_EAC:
97 return PIPE_FORMAT_R16G16_UNORM;
98 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
99 return PIPE_FORMAT_R16_SNORM;
100 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
101 return PIPE_FORMAT_R16G16_SNORM;
102 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
103 return st->transcode_etc ? PIPE_FORMAT_DXT1_RGBA : PIPE_FORMAT_R8G8B8A8_UNORM;
104 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
105 return st->transcode_etc ? PIPE_FORMAT_DXT1_SRGBA :
106 has_bgra_srgb ? PIPE_FORMAT_B8G8R8A8_SRGB : PIPE_FORMAT_R8G8B8A8_SRGB;
107 default:
108 unreachable("Unknown ETC2 format");
109 }
110 }
111
112 if (st_astc_format_fallback(st, mesaFormat)) {
113 if (_mesa_is_format_srgb(mesaFormat)) {
114 return st->transcode_astc ? PIPE_FORMAT_DXT5_SRGBA :
115 PIPE_FORMAT_R8G8B8A8_SRGB;
116 } else {
117 return st->transcode_astc ? PIPE_FORMAT_DXT5_RGBA :
118 PIPE_FORMAT_R8G8B8A8_UNORM;
119 }
120 }
121
122 return mesaFormat;
123 }
124
125
126 /**
127 * Translate Gallium format to Mesa format.
128 */
129 mesa_format
st_pipe_format_to_mesa_format(enum pipe_format format)130 st_pipe_format_to_mesa_format(enum pipe_format format)
131 {
132 mesa_format mf = format;
133 if (!_mesa_get_format_name(mf))
134 return MESA_FORMAT_NONE;
135 return mf;
136 }
137
138 /**
139 * Map GL texture formats to Gallium pipe formats.
140 */
141 struct format_mapping
142 {
143 GLenum glFormats[18]; /**< list of GLenum formats, 0-terminated */
144 enum pipe_format pipeFormats[14]; /**< list of pipe formats, 0-terminated */
145 };
146
147
148 #define DEFAULT_RGBA_FORMATS \
149 PIPE_FORMAT_R8G8B8A8_UNORM, \
150 PIPE_FORMAT_B8G8R8A8_UNORM, \
151 PIPE_FORMAT_A8R8G8B8_UNORM, \
152 PIPE_FORMAT_A8B8G8R8_UNORM, \
153 0
154
155 #define DEFAULT_RGB_FORMATS \
156 PIPE_FORMAT_R8G8B8X8_UNORM, \
157 PIPE_FORMAT_B8G8R8X8_UNORM, \
158 PIPE_FORMAT_X8R8G8B8_UNORM, \
159 PIPE_FORMAT_X8B8G8R8_UNORM, \
160 PIPE_FORMAT_B5G6R5_UNORM, \
161 DEFAULT_RGBA_FORMATS
162
163 #define DEFAULT_SRGBA_FORMATS \
164 PIPE_FORMAT_R8G8B8A8_SRGB, \
165 PIPE_FORMAT_B8G8R8A8_SRGB, \
166 PIPE_FORMAT_A8R8G8B8_SRGB, \
167 PIPE_FORMAT_A8B8G8R8_SRGB, \
168 0
169
170 #define DEFAULT_DEPTH_FORMATS \
171 PIPE_FORMAT_Z24X8_UNORM, \
172 PIPE_FORMAT_X8Z24_UNORM, \
173 PIPE_FORMAT_Z16_UNORM, \
174 PIPE_FORMAT_Z24_UNORM_S8_UINT, \
175 PIPE_FORMAT_S8_UINT_Z24_UNORM, \
176 0
177
178 #define DEFAULT_SNORM8_RGBA_FORMATS \
179 PIPE_FORMAT_R8G8B8A8_SNORM, \
180 0
181
182 #define DEFAULT_UNORM16_RGBA_FORMATS \
183 PIPE_FORMAT_R16G16B16A16_UNORM, \
184 DEFAULT_RGBA_FORMATS
185
186
187 /**
188 * This table maps OpenGL texture format enums to Gallium pipe_format enums.
189 * Multiple GL enums might map to multiple pipe_formats.
190 * The first pipe format in the list that's supported is the one that's chosen.
191 */
192 static const struct format_mapping format_map[] = {
193 /* Basic RGB, RGBA formats */
194 {
195 { GL_RGB10, 0 },
196 { PIPE_FORMAT_R10G10B10X2_UNORM, PIPE_FORMAT_B10G10R10X2_UNORM,
197 PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
198 DEFAULT_RGB_FORMATS }
199 },
200 {
201 { GL_RGB10_A2, 0 },
202 { PIPE_FORMAT_R10G10B10A2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
203 DEFAULT_RGBA_FORMATS }
204 },
205 {
206 { 4, GL_RGBA, GL_RGBA8, 0 },
207 { PIPE_FORMAT_R8G8B8A8_UNORM, DEFAULT_RGBA_FORMATS }
208 },
209 {
210 { GL_BGRA, 0 },
211 { DEFAULT_RGBA_FORMATS }
212 },
213 {
214 { 3, GL_RGB, GL_RGB8, 0 },
215 { PIPE_FORMAT_R8G8B8X8_UNORM, DEFAULT_RGB_FORMATS }
216 },
217 {
218 { GL_RGB12, GL_RGB16, 0 },
219 { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
220 DEFAULT_RGB_FORMATS }
221 },
222 {
223 { GL_RGBA12, GL_RGBA16, 0 },
224 { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
225 },
226 {
227 { GL_RGBA4, GL_RGBA2, 0 },
228 { PIPE_FORMAT_B4G4R4A4_UNORM, PIPE_FORMAT_A4B4G4R4_UNORM,
229 DEFAULT_RGBA_FORMATS }
230 },
231 {
232 { GL_RGB5_A1, 0 },
233 { PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM,
234 DEFAULT_RGBA_FORMATS }
235 },
236 {
237 { GL_R3_G3_B2, 0 },
238 { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_R3G3B2_UNORM,
239 PIPE_FORMAT_B5G6R5_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
240 DEFAULT_RGB_FORMATS }
241 },
242 {
243 { GL_RGB4, 0 },
244 { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM,
245 PIPE_FORMAT_A4B4G4R4_UNORM,
246 DEFAULT_RGB_FORMATS }
247 },
248 {
249 { GL_RGB5, 0 },
250 { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_X1B5G5R5_UNORM,
251 PIPE_FORMAT_B5G5R5A1_UNORM, PIPE_FORMAT_A1B5G5R5_UNORM,
252 DEFAULT_RGB_FORMATS }
253 },
254 {
255 { GL_RGB565, 0 },
256 { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS }
257 },
258
259 /* basic Alpha formats */
260 {
261 { GL_ALPHA12, GL_ALPHA16, 0 },
262 { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
263 PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
264 },
265 {
266 { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
267 { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
268 },
269
270 /* basic Luminance formats */
271 {
272 { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
273 { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
274 PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
275 },
276 {
277 { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
278 { PIPE_FORMAT_L8_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGB_FORMATS }
279 },
280
281 /* basic Luminance/Alpha formats */
282 {
283 { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
284 GL_LUMINANCE16_ALPHA16, 0},
285 { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
286 PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
287 },
288 {
289 { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
290 { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
291 },
292 {
293 { GL_LUMINANCE4_ALPHA4, 0 },
294 { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
295 DEFAULT_RGBA_FORMATS }
296 },
297
298 /* basic Intensity formats */
299 {
300 { GL_INTENSITY12, GL_INTENSITY16, 0 },
301 { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
302 PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
303 },
304 {
305 { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
306 GL_COMPRESSED_INTENSITY, 0 },
307 { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
308 },
309
310 /* YCbCr */
311 {
312 { GL_YCBCR_MESA, 0 },
313 { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
314 },
315
316 /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
317 {
318 { GL_COMPRESSED_RGB, 0 },
319 { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
320 },
321 {
322 { GL_COMPRESSED_RGBA, 0 },
323 { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
324 },
325 {
326 { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
327 { PIPE_FORMAT_DXT1_RGB, 0 }
328 },
329 {
330 { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
331 { PIPE_FORMAT_DXT1_RGBA, 0 }
332 },
333 {
334 { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
335 { PIPE_FORMAT_DXT3_RGBA, 0 }
336 },
337 {
338 { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
339 { PIPE_FORMAT_DXT5_RGBA, 0 }
340 },
341
342 {
343 { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
344 { PIPE_FORMAT_FXT1_RGB, 0 }
345 },
346 {
347 { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
348 { PIPE_FORMAT_FXT1_RGBA, 0 }
349 },
350
351 /* Depth formats */
352 {
353 { GL_DEPTH_COMPONENT16, 0 },
354 { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
355 },
356 {
357 { GL_DEPTH_COMPONENT24, 0 },
358 { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
359 DEFAULT_DEPTH_FORMATS }
360 },
361 {
362 { GL_DEPTH_COMPONENT32, 0 },
363 { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
364 },
365 {
366 { GL_DEPTH_COMPONENT, 0 },
367 { DEFAULT_DEPTH_FORMATS }
368 },
369 {
370 { GL_DEPTH_COMPONENT32F, 0 },
371 { PIPE_FORMAT_Z32_FLOAT, 0 }
372 },
373
374 /* stencil formats */
375 {
376 { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
377 GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
378 {
379 PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
380 PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
381 }
382 },
383
384 /* Depth / Stencil formats */
385 {
386 { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
387 { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
388 },
389 {
390 { GL_DEPTH32F_STENCIL8, 0 },
391 { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
392 },
393
394 /* sRGB formats */
395 {
396 { GL_SRGB_EXT, GL_SRGB8_EXT, 0 },
397 { PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB,
398 DEFAULT_SRGBA_FORMATS }
399 },
400 {
401 { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
402 { PIPE_FORMAT_R8G8B8A8_SRGB, DEFAULT_SRGBA_FORMATS }
403 },
404 {
405 { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
406 { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB,
407 PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS }
408 },
409 {
410 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
411 { PIPE_FORMAT_DXT1_SRGBA, 0 }
412 },
413 {
414 { GL_COMPRESSED_SRGB_ALPHA_EXT,
415 GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
416 { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
417 },
418 {
419 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
420 { PIPE_FORMAT_DXT5_SRGBA, 0 }
421 },
422 {
423 { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
424 GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
425 { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
426 },
427 {
428 { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT,
429 0 },
430 { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
431 },
432 {
433 { GL_SR8_EXT, 0 },
434 { PIPE_FORMAT_R8_SRGB, 0 }
435 },
436 {
437 { GL_SRG8_EXT, 0 },
438 { PIPE_FORMAT_R8G8_SRGB, 0 }
439 },
440
441 /* 16-bit float formats */
442 {
443 { GL_RGBA16F_ARB, 0 },
444 { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
445 },
446 {
447 { GL_RGB16F_ARB, 0 },
448 { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT,
449 PIPE_FORMAT_R16G16B16A16_FLOAT,
450 PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
451 },
452 {
453 { GL_LUMINANCE_ALPHA16F_ARB, 0 },
454 { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
455 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
456 },
457 {
458 { GL_ALPHA16F_ARB, 0 },
459 { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
460 PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
461 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
462 },
463 {
464 { GL_INTENSITY16F_ARB, 0 },
465 { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
466 PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
467 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
468 },
469 {
470 { GL_LUMINANCE16F_ARB, 0 },
471 { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
472 PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
473 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
474 },
475 {
476 { GL_R16F, 0 },
477 { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
478 PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
479 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
480 },
481 {
482 { GL_RG16F, 0 },
483 { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
484 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
485 },
486
487 /* 32-bit float formats */
488 {
489 { GL_RGBA32F_ARB, 0 },
490 { PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
491 },
492 {
493 { GL_RGB32F_ARB, 0 },
494 { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT,
495 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
496 },
497 {
498 { GL_LUMINANCE_ALPHA32F_ARB, 0 },
499 { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
500 },
501 {
502 { GL_ALPHA32F_ARB, 0 },
503 { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
504 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
505 },
506 {
507 { GL_INTENSITY32F_ARB, 0 },
508 { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
509 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
510 },
511 {
512 { GL_LUMINANCE32F_ARB, 0 },
513 { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
514 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
515 },
516 {
517 { GL_R32F, 0 },
518 { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
519 PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
520 },
521 {
522 { GL_RG32F, 0 },
523 { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
524 },
525
526 /* R, RG formats */
527 {
528 { GL_RED, GL_R8, 0 },
529 { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
530 },
531 {
532 { GL_RG, GL_RG8, 0 },
533 { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
534 },
535 {
536 { GL_R16, 0 },
537 { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
538 DEFAULT_UNORM16_RGBA_FORMATS }
539 },
540 {
541 { GL_RG16, 0 },
542 { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
543 },
544
545 /* compressed R, RG formats */
546 {
547 { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
548 { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
549 },
550 {
551 { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
552 { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
553 },
554 {
555 { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
556 { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
557 },
558 {
559 { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
560 { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
561 },
562 {
563 { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
564 { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
565 },
566 {
567 { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
568 { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
569 },
570 {
571 { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
572 GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
573 { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
574 },
575 {
576 { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
577 { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
578 },
579
580 /* ETC1 */
581 {
582 { GL_ETC1_RGB8_OES, 0 },
583 { PIPE_FORMAT_ETC1_RGB8, 0 }
584 },
585
586 /* ETC2 */
587 {
588 { GL_COMPRESSED_RGB8_ETC2, 0 },
589 { PIPE_FORMAT_ETC2_RGB8, 0 }
590 },
591 {
592 { GL_COMPRESSED_SRGB8_ETC2, 0 },
593 { PIPE_FORMAT_ETC2_SRGB8, 0 }
594 },
595 {
596 { GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 },
597 { PIPE_FORMAT_ETC2_RGB8A1, 0 }
598 },
599 {
600 { GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2, 0 },
601 { PIPE_FORMAT_ETC2_SRGB8A1, 0 }
602 },
603 {
604 { GL_COMPRESSED_RGBA8_ETC2_EAC, 0 },
605 { PIPE_FORMAT_ETC2_RGBA8, 0 }
606 },
607 {
608 { GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC, 0 },
609 { PIPE_FORMAT_ETC2_SRGBA8, 0 }
610 },
611 {
612 { GL_COMPRESSED_R11_EAC, 0 },
613 { PIPE_FORMAT_ETC2_R11_UNORM, 0 }
614 },
615 {
616 { GL_COMPRESSED_SIGNED_R11_EAC, 0 },
617 { PIPE_FORMAT_ETC2_R11_SNORM, 0 }
618 },
619 {
620 { GL_COMPRESSED_RG11_EAC, 0 },
621 { PIPE_FORMAT_ETC2_RG11_UNORM, 0 }
622 },
623 {
624 { GL_COMPRESSED_SIGNED_RG11_EAC, 0 },
625 { PIPE_FORMAT_ETC2_RG11_SNORM, 0 }
626 },
627
628 /* BPTC */
629 {
630 { GL_COMPRESSED_RGBA_BPTC_UNORM, 0 },
631 { PIPE_FORMAT_BPTC_RGBA_UNORM, 0 },
632 },
633 {
634 { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, 0 },
635 { PIPE_FORMAT_BPTC_SRGBA, 0 },
636 },
637 {
638 { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, 0 },
639 { PIPE_FORMAT_BPTC_RGB_FLOAT, 0 },
640 },
641 {
642 { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, 0 },
643 { PIPE_FORMAT_BPTC_RGB_UFLOAT, 0 },
644 },
645
646 /* ASTC */
647 {
648 { GL_COMPRESSED_RGBA_ASTC_4x4_KHR, 0 },
649 { PIPE_FORMAT_ASTC_4x4, 0},
650 },
651 {
652 { GL_COMPRESSED_RGBA_ASTC_5x4_KHR, 0 },
653 { PIPE_FORMAT_ASTC_5x4, 0},
654 },
655 {
656 { GL_COMPRESSED_RGBA_ASTC_5x5_KHR, 0 },
657 { PIPE_FORMAT_ASTC_5x5, 0},
658 },
659 {
660 { GL_COMPRESSED_RGBA_ASTC_6x5_KHR, 0 },
661 { PIPE_FORMAT_ASTC_6x5, 0},
662 },
663 {
664 { GL_COMPRESSED_RGBA_ASTC_6x6_KHR, 0 },
665 { PIPE_FORMAT_ASTC_6x6, 0},
666 },
667 {
668 { GL_COMPRESSED_RGBA_ASTC_8x5_KHR, 0 },
669 { PIPE_FORMAT_ASTC_8x5, 0},
670 },
671 {
672 { GL_COMPRESSED_RGBA_ASTC_8x6_KHR, 0 },
673 { PIPE_FORMAT_ASTC_8x6, 0},
674 },
675 {
676 { GL_COMPRESSED_RGBA_ASTC_8x8_KHR, 0 },
677 { PIPE_FORMAT_ASTC_8x8, 0},
678 },
679 {
680 { GL_COMPRESSED_RGBA_ASTC_10x5_KHR, 0 },
681 { PIPE_FORMAT_ASTC_10x5, 0},
682 },
683 {
684 { GL_COMPRESSED_RGBA_ASTC_10x6_KHR, 0 },
685 { PIPE_FORMAT_ASTC_10x6, 0},
686 },
687 {
688 { GL_COMPRESSED_RGBA_ASTC_10x8_KHR, 0 },
689 { PIPE_FORMAT_ASTC_10x8, 0},
690 },
691 {
692 { GL_COMPRESSED_RGBA_ASTC_10x10_KHR, 0 },
693 { PIPE_FORMAT_ASTC_10x10, 0},
694 },
695 {
696 { GL_COMPRESSED_RGBA_ASTC_12x10_KHR, 0 },
697 { PIPE_FORMAT_ASTC_12x10, 0},
698 },
699 {
700 { GL_COMPRESSED_RGBA_ASTC_12x12_KHR, 0 },
701 { PIPE_FORMAT_ASTC_12x12, 0},
702 },
703
704 {
705 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR, 0 },
706 { PIPE_FORMAT_ASTC_4x4_SRGB, 0},
707 },
708 {
709 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR, 0 },
710 { PIPE_FORMAT_ASTC_5x4_SRGB, 0},
711 },
712 {
713 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR, 0 },
714 { PIPE_FORMAT_ASTC_5x5_SRGB, 0},
715 },
716 {
717 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR, 0 },
718 { PIPE_FORMAT_ASTC_6x5_SRGB, 0},
719 },
720 {
721 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR, 0 },
722 { PIPE_FORMAT_ASTC_6x6_SRGB, 0},
723 },
724 {
725 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR, 0 },
726 { PIPE_FORMAT_ASTC_8x5_SRGB, 0},
727 },
728 {
729 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR, 0 },
730 { PIPE_FORMAT_ASTC_8x6_SRGB, 0},
731 },
732 {
733 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR, 0 },
734 { PIPE_FORMAT_ASTC_8x8_SRGB, 0},
735 },
736 {
737 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR, 0 },
738 { PIPE_FORMAT_ASTC_10x5_SRGB, 0},
739 },
740 {
741 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR, 0 },
742 { PIPE_FORMAT_ASTC_10x6_SRGB, 0},
743 },
744 {
745 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR, 0 },
746 { PIPE_FORMAT_ASTC_10x8_SRGB, 0},
747 },
748 {
749 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR, 0 },
750 { PIPE_FORMAT_ASTC_10x10_SRGB, 0},
751 },
752 {
753 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR, 0 },
754 { PIPE_FORMAT_ASTC_12x10_SRGB, 0},
755 },
756 {
757 { GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR, 0 },
758 { PIPE_FORMAT_ASTC_12x12_SRGB, 0},
759 },
760
761 /* signed/unsigned integer formats.
762 */
763 {
764 { GL_RGBA_INTEGER_EXT,
765 GL_BGRA_INTEGER_EXT,
766 GL_RGBA8I_EXT, 0 },
767 { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
768 },
769 {
770 { GL_RGB_INTEGER_EXT,
771 GL_BGR_INTEGER_EXT,
772 GL_RGB8I_EXT,
773 GL_BLUE_INTEGER_EXT, 0 },
774 { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT,
775 PIPE_FORMAT_R8G8B8A8_SINT, 0 }
776 },
777 {
778 { GL_ALPHA_INTEGER_EXT,
779 GL_ALPHA8I_EXT, 0 },
780 { PIPE_FORMAT_A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
781 },
782 {
783 { GL_ALPHA16I_EXT, 0 },
784 { PIPE_FORMAT_A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
785 },
786 {
787 { GL_ALPHA32I_EXT, 0 },
788 { PIPE_FORMAT_A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
789 },
790 {
791 { GL_ALPHA8UI_EXT, 0 },
792 { PIPE_FORMAT_A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
793 },
794 {
795 { GL_ALPHA16UI_EXT, 0 },
796 { PIPE_FORMAT_A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
797 },
798 {
799 { GL_ALPHA32UI_EXT, 0 },
800 { PIPE_FORMAT_A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
801 },
802 {
803 { GL_INTENSITY8I_EXT, 0 },
804 { PIPE_FORMAT_I8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
805 },
806 {
807 { GL_INTENSITY16I_EXT, 0 },
808 { PIPE_FORMAT_I16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
809 },
810 {
811 { GL_INTENSITY32I_EXT, 0 },
812 { PIPE_FORMAT_I32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
813 },
814 {
815 { GL_INTENSITY8UI_EXT, 0 },
816 { PIPE_FORMAT_I8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
817 },
818 {
819 { GL_INTENSITY16UI_EXT, 0 },
820 { PIPE_FORMAT_I16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
821 },
822 {
823 { GL_INTENSITY32UI_EXT, 0 },
824 { PIPE_FORMAT_I32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
825 },
826 {
827 { GL_LUMINANCE8I_EXT, 0 },
828 { PIPE_FORMAT_L8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
829 },
830 {
831 { GL_LUMINANCE16I_EXT, 0 },
832 { PIPE_FORMAT_L16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
833 },
834 {
835 { GL_LUMINANCE32I_EXT, 0 },
836 { PIPE_FORMAT_L32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
837 },
838 {
839 { GL_LUMINANCE_INTEGER_EXT,
840 GL_LUMINANCE8UI_EXT, 0 },
841 { PIPE_FORMAT_L8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
842 },
843 {
844 { GL_LUMINANCE16UI_EXT, 0 },
845 { PIPE_FORMAT_L16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
846 },
847 {
848 { GL_LUMINANCE32UI_EXT, 0 },
849 { PIPE_FORMAT_L32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
850 },
851 {
852 { GL_LUMINANCE_ALPHA_INTEGER_EXT,
853 GL_LUMINANCE_ALPHA8I_EXT, 0 },
854 { PIPE_FORMAT_L8A8_SINT, PIPE_FORMAT_R8G8B8A8_SINT, 0 }
855 },
856 {
857 { GL_LUMINANCE_ALPHA16I_EXT, 0 },
858 { PIPE_FORMAT_L16A16_SINT, PIPE_FORMAT_R16G16B16A16_SINT, 0 }
859 },
860 {
861 { GL_LUMINANCE_ALPHA32I_EXT, 0 },
862 { PIPE_FORMAT_L32A32_SINT, PIPE_FORMAT_R32G32B32A32_SINT, 0 }
863 },
864 {
865 { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
866 { PIPE_FORMAT_L8A8_UINT, PIPE_FORMAT_R8G8B8A8_UINT, 0 }
867 },
868 {
869 { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
870 { PIPE_FORMAT_L16A16_UINT, PIPE_FORMAT_R16G16B16A16_UINT, 0 }
871 },
872 {
873 { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
874 { PIPE_FORMAT_L32A32_UINT, PIPE_FORMAT_R32G32B32A32_UINT, 0 }
875 },
876 {
877 { GL_RGB16I_EXT, 0 },
878 { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT,
879 PIPE_FORMAT_R16G16B16A16_SINT, 0 },
880 },
881 {
882 { GL_RGBA16I_EXT, 0 },
883 { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
884 },
885 {
886 { GL_RGB32I_EXT, 0 },
887 { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT,
888 PIPE_FORMAT_R32G32B32A32_SINT, 0 },
889 },
890 {
891 { GL_RGBA32I_EXT, 0 },
892 { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
893 },
894 {
895 { GL_RGBA8UI_EXT, 0 },
896 { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
897 },
898 {
899 { GL_RGB8UI_EXT, 0 },
900 { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT,
901 PIPE_FORMAT_R8G8B8A8_UINT, 0 }
902 },
903 {
904 { GL_RGB16UI_EXT, 0 },
905 { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT,
906 PIPE_FORMAT_R16G16B16A16_UINT, 0 }
907 },
908 {
909 { GL_RGBA16UI_EXT, 0 },
910 { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
911 },
912 {
913 { GL_RGB32UI_EXT, 0},
914 { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT,
915 PIPE_FORMAT_R32G32B32A32_UINT, 0 }
916 },
917 {
918 { GL_RGBA32UI_EXT, 0},
919 { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
920 },
921 {
922 { GL_R8I, GL_RED_INTEGER_EXT, 0},
923 { PIPE_FORMAT_R8_SINT, PIPE_FORMAT_R8G8_SINT, 0},
924 },
925 {
926 { GL_R16I, 0},
927 { PIPE_FORMAT_R16_SINT, 0},
928 },
929 {
930 { GL_R32I, 0},
931 { PIPE_FORMAT_R32_SINT, 0},
932 },
933 {
934 { GL_R8UI, 0},
935 { PIPE_FORMAT_R8_UINT, PIPE_FORMAT_R8G8_UINT, 0},
936 },
937 {
938 { GL_R16UI, 0},
939 { PIPE_FORMAT_R16_UINT, 0},
940 },
941 {
942 { GL_R32UI, 0},
943 { PIPE_FORMAT_R32_UINT, 0},
944 },
945 {
946 { GL_RG8I, GL_GREEN_INTEGER_EXT, 0},
947 { PIPE_FORMAT_R8G8_SINT, 0},
948 },
949 {
950 { GL_RG16I, 0},
951 { PIPE_FORMAT_R16G16_SINT, 0},
952 },
953 {
954 { GL_RG32I, 0},
955 { PIPE_FORMAT_R32G32_SINT, 0},
956 },
957 {
958 { GL_RG8UI, 0},
959 { PIPE_FORMAT_R8G8_UINT, 0},
960 },
961 {
962 { GL_RG16UI, 0},
963 { PIPE_FORMAT_R16G16_UINT, 0},
964 },
965 {
966 { GL_RG32UI, 0},
967 { PIPE_FORMAT_R32G32_UINT, 0},
968 },
969 /* signed normalized formats */
970 {
971 { GL_RED_SNORM, GL_R8_SNORM, 0 },
972 { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
973 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
974 },
975 {
976 { GL_R16_SNORM, 0 },
977 { PIPE_FORMAT_R16_SNORM,
978 PIPE_FORMAT_R16G16_SNORM,
979 PIPE_FORMAT_R16G16B16A16_SNORM,
980 PIPE_FORMAT_R8_SNORM,
981 PIPE_FORMAT_R8G8_SNORM,
982 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
983 },
984 {
985 { GL_RG_SNORM, GL_RG8_SNORM, 0 },
986 { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
987 },
988 {
989 { GL_RG16_SNORM, 0 },
990 { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
991 PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
992 },
993 {
994 { GL_RGB_SNORM, GL_RGB8_SNORM, 0 },
995 { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
996 },
997 {
998 { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
999 { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1000 },
1001 {
1002 { GL_RGB16_SNORM, 0 },
1003 { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1004 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1005 },
1006 {
1007 { GL_RGBA16_SNORM, 0 },
1008 { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1009 },
1010 {
1011 { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1012 { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1013 },
1014 {
1015 { GL_ALPHA16_SNORM, 0 },
1016 { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1017 PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1018 },
1019 {
1020 { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1021 { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1022 },
1023 {
1024 { GL_LUMINANCE16_SNORM, 0 },
1025 { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1026 PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1027 },
1028 {
1029 { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1030 { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1031 },
1032 {
1033 { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1034 { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1035 PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1036 },
1037 {
1038 { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1039 { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1040 },
1041 {
1042 { GL_INTENSITY16_SNORM, 0 },
1043 { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1044 PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1045 },
1046 {
1047 { GL_RGB9_E5, 0 },
1048 { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1049 },
1050 {
1051 { GL_R11F_G11F_B10F, 0 },
1052 { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1053 },
1054 {
1055 { GL_RGB10_A2UI, 0 },
1056 { PIPE_FORMAT_R10G10B10A2_UINT, PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1057 },
1058 };
1059
1060
1061 /**
1062 * Return first supported format from the given list.
1063 * \param allow_dxt indicates whether it's OK to return a DXT format.
1064 */
1065 static enum pipe_format
find_supported_format(struct pipe_screen * screen,const enum pipe_format formats[],enum pipe_texture_target target,unsigned sample_count,unsigned storage_sample_count,unsigned bindings,boolean allow_dxt)1066 find_supported_format(struct pipe_screen *screen,
1067 const enum pipe_format formats[],
1068 enum pipe_texture_target target,
1069 unsigned sample_count,
1070 unsigned storage_sample_count,
1071 unsigned bindings,
1072 boolean allow_dxt)
1073 {
1074 uint i;
1075 for (i = 0; formats[i]; i++) {
1076 if (!bindings || screen->is_format_supported(screen, formats[i], target,
1077 sample_count, storage_sample_count,
1078 bindings)) {
1079 if (!allow_dxt && util_format_is_s3tc(formats[i])) {
1080 /* we can't return a dxt format, continue searching */
1081 continue;
1082 }
1083
1084 return formats[i];
1085 }
1086 }
1087 return PIPE_FORMAT_NONE;
1088 }
1089
1090 /**
1091 * Given an OpenGL internalFormat value for a texture or surface, return
1092 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1093 * This is called during glTexImage2D, for example.
1094 *
1095 * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1096 * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1097 * we want render-to-texture ability.
1098 * If bindings is zero, the driver doesn't need to support the returned format.
1099 *
1100 * \param internalFormat the user value passed to glTexImage2D
1101 * \param target one of PIPE_TEXTURE_x
1102 * \param bindings bitmask of PIPE_BIND_x flags.
1103 * \param allow_dxt indicates whether it's OK to return a DXT format. This
1104 * only matters when internalFormat names a generic or
1105 * specific compressed format. And that should only happen
1106 * when we're getting called from gl[Copy]TexImage().
1107 */
1108 enum pipe_format
st_choose_format(struct st_context * st,GLenum internalFormat,GLenum format,GLenum type,enum pipe_texture_target target,unsigned sample_count,unsigned storage_sample_count,unsigned bindings,bool swap_bytes,bool allow_dxt)1109 st_choose_format(struct st_context *st, GLenum internalFormat,
1110 GLenum format, GLenum type,
1111 enum pipe_texture_target target, unsigned sample_count,
1112 unsigned storage_sample_count,
1113 unsigned bindings, bool swap_bytes, bool allow_dxt)
1114 {
1115 struct pipe_screen *screen = st->screen;
1116 unsigned i;
1117 int j;
1118 enum pipe_format pf;
1119
1120 /* can't render to compressed formats at this time */
1121 if (_mesa_is_compressed_format(st->ctx, internalFormat)
1122 && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1123 return PIPE_FORMAT_NONE;
1124 }
1125
1126 /* If we have an unsized internalFormat, and the driver supports a format
1127 * that exactly matches format/type such that we can just memcpy, pick that
1128 * (unless the format wouldn't still be unorm, which is the expectation for
1129 * unsized formats).
1130 */
1131 if (_mesa_is_enum_format_unsized(internalFormat) && format != 0 &&
1132 _mesa_is_type_unsigned(type)) {
1133 pf = st_choose_matching_format(st, bindings, format, type,
1134 swap_bytes);
1135
1136 if (pf != PIPE_FORMAT_NONE &&
1137 (!bindings || screen->is_format_supported(screen, pf, target, sample_count,
1138 storage_sample_count, bindings)) &&
1139 _mesa_get_format_base_format(st_pipe_format_to_mesa_format(pf)) ==
1140 internalFormat) {
1141 goto success;
1142 }
1143 }
1144
1145 /* For an unsized GL_RGB but a 2_10_10_10 type, try to pick one of the
1146 * 2_10_10_10 formats. This is important for
1147 * GL_EXT_texture_type_2_10_10_10_EXT support, which says that these
1148 * formats are not color-renderable. Mesa's check for making those
1149 * non-color-renderable is based on our chosen format being 2101010.
1150 */
1151 if (type == GL_UNSIGNED_INT_2_10_10_10_REV) {
1152 if (internalFormat == GL_RGB)
1153 internalFormat = GL_RGB10;
1154 else if (internalFormat == GL_RGBA)
1155 internalFormat = GL_RGB10_A2;
1156 }
1157
1158 if (type == GL_UNSIGNED_SHORT_5_5_5_1) {
1159 if (internalFormat == GL_RGB)
1160 internalFormat = GL_RGB5;
1161 else if (internalFormat == GL_RGBA)
1162 internalFormat = GL_RGB5_A1;
1163 }
1164
1165 /* search table for internalFormat */
1166 for (i = 0; i < ARRAY_SIZE(format_map); i++) {
1167 const struct format_mapping *mapping = &format_map[i];
1168 for (j = 0; mapping->glFormats[j]; j++) {
1169 if (mapping->glFormats[j] == internalFormat) {
1170 /* Found the desired internal format. Find first pipe format
1171 * which is supported by the driver.
1172 */
1173 pf = find_supported_format(screen, mapping->pipeFormats,
1174 target, sample_count,
1175 storage_sample_count, bindings,
1176 allow_dxt);
1177 goto success;
1178 }
1179 }
1180 }
1181
1182 _mesa_problem(NULL, "unhandled format!\n");
1183 return PIPE_FORMAT_NONE;
1184
1185 success:
1186 if (0) {
1187 debug_printf("%s(fmt=%s, type=%s, intFmt=%s) = %s\n",
1188 __FUNCTION__,
1189 _mesa_enum_to_string(format),
1190 _mesa_enum_to_string(type),
1191 _mesa_enum_to_string(internalFormat),
1192 util_format_name(pf));
1193 }
1194 return pf;
1195 }
1196
1197
1198 /**
1199 * Given an OpenGL user-requested format and type, and swapBytes state,
1200 * return the format which exactly matches those parameters, so that
1201 * a memcpy-based transfer can be done.
1202 *
1203 * If no match format exists, return PIPE_FORMAT_NONE.
1204 */
1205 enum pipe_format
st_choose_matching_format_noverify(struct st_context * st,GLenum format,GLenum type,GLboolean swapBytes)1206 st_choose_matching_format_noverify(struct st_context *st,
1207 GLenum format, GLenum type, GLboolean swapBytes)
1208 {
1209 if (swapBytes && !_mesa_swap_bytes_in_type_enum(&type))
1210 return PIPE_FORMAT_NONE;
1211
1212 mesa_format mesa_format = _mesa_format_from_format_and_type(format, type);
1213 if (_mesa_format_is_mesa_array_format(mesa_format))
1214 mesa_format = _mesa_format_from_array_format(mesa_format);
1215 if (mesa_format != MESA_FORMAT_NONE)
1216 return st_mesa_format_to_pipe_format(st, mesa_format);
1217
1218 return PIPE_FORMAT_NONE;
1219 }
1220
1221
1222 /**
1223 * Given an OpenGL user-requested format and type, and swapBytes state,
1224 * return the format which exactly matches those parameters, so that
1225 * a memcpy-based transfer can be done.
1226 *
1227 * If no format is supported, return PIPE_FORMAT_NONE.
1228 */
1229 enum pipe_format
st_choose_matching_format(struct st_context * st,unsigned bind,GLenum format,GLenum type,GLboolean swapBytes)1230 st_choose_matching_format(struct st_context *st, unsigned bind,
1231 GLenum format, GLenum type, GLboolean swapBytes)
1232 {
1233 struct pipe_screen *screen = st->screen;
1234 enum pipe_format pformat = st_choose_matching_format_noverify(st, format, type, swapBytes);
1235 if (pformat != PIPE_FORMAT_NONE &&
1236 (!bind || screen->is_format_supported(screen, pformat, PIPE_TEXTURE_2D, 0, 0, bind)))
1237 return pformat;
1238
1239 return PIPE_FORMAT_NONE;
1240 }
1241
1242
1243 /**
1244 * Called via ctx->Driver.ChooseTextureFormat().
1245 */
1246 mesa_format
st_ChooseTextureFormat(struct gl_context * ctx,GLenum target,GLint internalFormat,GLenum format,GLenum type)1247 st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
1248 GLint internalFormat,
1249 GLenum format, GLenum type)
1250 {
1251 struct st_context *st = st_context(ctx);
1252 enum pipe_format pFormat;
1253 mesa_format mFormat;
1254 unsigned bindings;
1255 bool is_renderbuffer = false;
1256 enum pipe_texture_target pTarget;
1257
1258 if (target == GL_RENDERBUFFER) {
1259 pTarget = PIPE_TEXTURE_2D;
1260 is_renderbuffer = true;
1261 } else {
1262 pTarget = gl_target_to_pipe(target);
1263 }
1264
1265 if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) {
1266 /* We don't do compression for these texture targets because of
1267 * difficulty with sub-texture updates on non-block boundaries, etc.
1268 * So change the internal format request to an uncompressed format.
1269 */
1270 internalFormat =
1271 _mesa_generic_compressed_format_to_uncompressed_format(internalFormat);
1272 }
1273
1274 /* GL textures may wind up being render targets, but we don't know
1275 * that in advance. Specify potential render target flags now for formats
1276 * that we know should always be renderable.
1277 */
1278 bindings = PIPE_BIND_SAMPLER_VIEW;
1279 if (_mesa_is_depth_or_stencil_format(internalFormat))
1280 bindings |= PIPE_BIND_DEPTH_STENCIL;
1281 else if (is_renderbuffer || internalFormat == 3 || internalFormat == 4 ||
1282 internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1283 internalFormat == GL_RGBA2 ||
1284 internalFormat == GL_RGB4 || internalFormat == GL_RGBA4 ||
1285 internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1286 internalFormat == GL_BGRA ||
1287 internalFormat == GL_RGB16F ||
1288 internalFormat == GL_RGBA16F ||
1289 internalFormat == GL_RGB32F ||
1290 internalFormat == GL_RGBA32F ||
1291 internalFormat == GL_RED ||
1292 internalFormat == GL_RED_SNORM ||
1293 internalFormat == GL_R8I ||
1294 internalFormat == GL_R8UI)
1295 bindings |= PIPE_BIND_RENDER_TARGET;
1296
1297 if ((_mesa_is_desktop_gl(ctx) && ctx->Version >= 30) &&
1298 (internalFormat == GL_ALPHA4 ||
1299 internalFormat == GL_ALPHA8 ||
1300 internalFormat == GL_ALPHA12 ||
1301 internalFormat == GL_ALPHA16 ||
1302 /* ARB_texture_float */
1303 internalFormat == GL_ALPHA32F_ARB ||
1304 internalFormat == GL_INTENSITY32F_ARB ||
1305 internalFormat == GL_LUMINANCE32F_ARB ||
1306 internalFormat == GL_LUMINANCE_ALPHA32F_ARB ||
1307 internalFormat == GL_ALPHA16F_ARB ||
1308 internalFormat == GL_INTENSITY16F_ARB ||
1309 internalFormat == GL_LUMINANCE16F_ARB ||
1310 internalFormat == GL_LUMINANCE_ALPHA16F_ARB))
1311 bindings |= PIPE_BIND_RENDER_TARGET;
1312
1313 /* GLES allows the driver to choose any format which matches
1314 * the format+type combo, because GLES only supports unsized internal
1315 * formats and expects the driver to choose whatever suits it.
1316 */
1317 if (_mesa_is_gles(ctx)) {
1318 GLenum baseFormat = _mesa_base_tex_format(ctx, internalFormat);
1319 GLenum basePackFormat = _mesa_base_pack_format(format);
1320 GLenum iformat = internalFormat;
1321
1322 /* Treat GL_BGRA as GL_RGBA. */
1323 if (iformat == GL_BGRA)
1324 iformat = GL_RGBA;
1325
1326 /* Check if the internalformat is unsized and compatible
1327 * with the "format".
1328 */
1329 if (iformat == baseFormat && iformat == basePackFormat) {
1330 pFormat = st_choose_matching_format(st, bindings, format, type,
1331 ctx->Unpack.SwapBytes);
1332
1333 if (pFormat != PIPE_FORMAT_NONE)
1334 return st_pipe_format_to_mesa_format(pFormat);
1335
1336 if (!is_renderbuffer) {
1337 /* try choosing format again, this time without render
1338 * target bindings.
1339 */
1340 pFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
1341 format, type,
1342 ctx->Unpack.SwapBytes);
1343 if (pFormat != PIPE_FORMAT_NONE)
1344 return st_pipe_format_to_mesa_format(pFormat);
1345 }
1346 }
1347 }
1348
1349 pFormat = st_choose_format(st, internalFormat, format, type,
1350 pTarget, 0, 0, bindings,
1351 ctx->Unpack.SwapBytes, true);
1352
1353 if (pFormat == PIPE_FORMAT_NONE && !is_renderbuffer) {
1354 /* try choosing format again, this time without render target bindings */
1355 pFormat = st_choose_format(st, internalFormat, format, type,
1356 pTarget, 0, 0, PIPE_BIND_SAMPLER_VIEW,
1357 ctx->Unpack.SwapBytes, true);
1358 }
1359
1360 if (pFormat == PIPE_FORMAT_NONE) {
1361 mFormat = _mesa_glenum_to_compressed_format(internalFormat);
1362 if (st_compressed_format_fallback(st, mFormat))
1363 return mFormat;
1364
1365 /* no luck at all */
1366 return MESA_FORMAT_NONE;
1367 }
1368
1369 mFormat = st_pipe_format_to_mesa_format(pFormat);
1370
1371 /* Debugging aid */
1372 if (0) {
1373 debug_printf("%s(intFormat=%s, format=%s, type=%s) -> %s, %s\n",
1374 __func__,
1375 _mesa_enum_to_string(internalFormat),
1376 _mesa_enum_to_string(format),
1377 _mesa_enum_to_string(type),
1378 util_format_name(pFormat),
1379 _mesa_get_format_name(mFormat));
1380 }
1381
1382 return mFormat;
1383 }
1384
1385
1386 /**
1387 * Called via ctx->Driver.QueryInternalFormat().
1388 */
1389 static size_t
st_QuerySamplesForFormat(struct gl_context * ctx,GLenum target,GLenum internalFormat,int samples[16])1390 st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target,
1391 GLenum internalFormat, int samples[16])
1392 {
1393 struct st_context *st = st_context(ctx);
1394 enum pipe_format format;
1395 unsigned i, bind, num_sample_counts = 0;
1396 unsigned min_max_samples;
1397
1398 (void) target;
1399
1400 if (_mesa_is_depth_or_stencil_format(internalFormat))
1401 bind = PIPE_BIND_DEPTH_STENCIL;
1402 else
1403 bind = PIPE_BIND_RENDER_TARGET;
1404
1405 if (_mesa_is_enum_format_integer(internalFormat))
1406 min_max_samples = ctx->Const.MaxIntegerSamples;
1407 else if (_mesa_is_depth_or_stencil_format(internalFormat))
1408 min_max_samples = ctx->Const.MaxDepthTextureSamples;
1409 else
1410 min_max_samples = ctx->Const.MaxColorTextureSamples;
1411
1412 /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
1413 * formats.
1414 */
1415 if (!ctx->Extensions.EXT_sRGB) {
1416 internalFormat = _mesa_get_linear_internalformat(internalFormat);
1417 }
1418
1419 /* Set sample counts in descending order. */
1420 for (i = 16; i > 1; i--) {
1421 format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1422 PIPE_TEXTURE_2D, i, i, bind,
1423 false, false);
1424
1425 if (format != PIPE_FORMAT_NONE || i == min_max_samples) {
1426 samples[num_sample_counts++] = i;
1427 }
1428 }
1429
1430 if (!num_sample_counts) {
1431 samples[num_sample_counts++] = 1;
1432 }
1433
1434 return num_sample_counts;
1435 }
1436
1437
1438 /**
1439 * ARB_internalformat_query2 driver hook.
1440 */
1441 void
st_QueryInternalFormat(struct gl_context * ctx,GLenum target,GLenum internalFormat,GLenum pname,GLint * params)1442 st_QueryInternalFormat(struct gl_context *ctx, GLenum target,
1443 GLenum internalFormat, GLenum pname, GLint *params)
1444 {
1445 struct st_context *st = st_context(ctx);
1446 /* The API entry-point gives us a temporary params buffer that is non-NULL
1447 * and guaranteed to have at least 16 elements.
1448 */
1449 assert(params != NULL);
1450
1451 switch (pname) {
1452 case GL_SAMPLES:
1453 st_QuerySamplesForFormat(ctx, target, internalFormat, params);
1454 break;
1455
1456 case GL_NUM_SAMPLE_COUNTS: {
1457 int samples[16];
1458 size_t num_samples;
1459 num_samples = st_QuerySamplesForFormat(ctx, target, internalFormat,
1460 samples);
1461 params[0] = (GLint) num_samples;
1462 break;
1463 }
1464 case GL_INTERNALFORMAT_PREFERRED: {
1465 params[0] = GL_NONE;
1466
1467 /* We need to resolve an internal format that is compatible with
1468 * the passed internal format, and optimal to the driver. By now,
1469 * we just validate that the passed internal format is supported by
1470 * the driver, and if so return the same internal format, otherwise
1471 * return GL_NONE.
1472 */
1473 unsigned bindings;
1474 if (_mesa_is_depth_or_stencil_format(internalFormat))
1475 bindings = PIPE_BIND_DEPTH_STENCIL;
1476 else
1477 bindings = PIPE_BIND_RENDER_TARGET;
1478 enum pipe_format pformat = st_choose_format(st,
1479 internalFormat,
1480 GL_NONE,
1481 GL_NONE,
1482 PIPE_TEXTURE_2D, 0, 0,
1483 bindings,
1484 false, false);
1485 if (pformat)
1486 params[0] = internalFormat;
1487 break;
1488 }
1489 case GL_TEXTURE_REDUCTION_MODE_ARB: {
1490 mesa_format format = st_ChooseTextureFormat(ctx, target, internalFormat, GL_NONE, GL_NONE);
1491 enum pipe_format pformat = st_mesa_format_to_pipe_format(st, format);
1492 struct pipe_screen *screen = st->screen;
1493 params[0] = pformat != PIPE_FORMAT_NONE &&
1494 screen->is_format_supported(screen, pformat, PIPE_TEXTURE_2D,
1495 0, 0, PIPE_BIND_SAMPLER_REDUCTION_MINMAX);
1496 break;
1497 }
1498 case GL_NUM_VIRTUAL_PAGE_SIZES_ARB:
1499 case GL_VIRTUAL_PAGE_SIZE_X_ARB:
1500 case GL_VIRTUAL_PAGE_SIZE_Y_ARB:
1501 case GL_VIRTUAL_PAGE_SIZE_Z_ARB: {
1502 /* this is used only for passing CTS */
1503 if (target == GL_RENDERBUFFER)
1504 target = GL_TEXTURE_2D;
1505 mesa_format format = st_ChooseTextureFormat(ctx, target, internalFormat, GL_NONE, GL_NONE);
1506 enum pipe_format pformat = st_mesa_format_to_pipe_format(st, format);
1507
1508 if (pformat != PIPE_FORMAT_NONE) {
1509 struct pipe_screen *screen = st->screen;
1510 enum pipe_texture_target ptarget = gl_target_to_pipe(target);
1511 bool multi_sample = _mesa_is_multisample_target(target);
1512
1513 if (pname == GL_NUM_VIRTUAL_PAGE_SIZES_ARB)
1514 params[0] = screen->get_sparse_texture_virtual_page_size(
1515 screen, ptarget, multi_sample, pformat, 0, 0, NULL, NULL, NULL);
1516 else {
1517 int *args[3] = {0};
1518 args[pname - GL_VIRTUAL_PAGE_SIZE_X_ARB] = params;
1519
1520 /* 16 comes from the caller _mesa_GetInternalformativ() */
1521 screen->get_sparse_texture_virtual_page_size(
1522 screen, ptarget, multi_sample, pformat, 0, 16,
1523 args[0], args[1], args[2]);
1524 }
1525 }
1526 break;
1527 }
1528 default:
1529 /* For the rest of the pnames, we call back the Mesa's default
1530 * function for drivers that don't implement ARB_internalformat_query2.
1531 */
1532 _mesa_query_internal_format_default(ctx, target, internalFormat, pname,
1533 params);
1534 }
1535 }
1536
1537
1538 /**
1539 * This is used for translating texture border color and the clear
1540 * color. For example, the clear color is interpreted according to
1541 * the renderbuffer's base format. For example, if clearing a
1542 * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
1543 * colorOut[2] = colorIn[0].
1544 * Similarly for texture border colors.
1545 */
1546 void
st_translate_color(union pipe_color_union * color,GLenum baseFormat,GLboolean is_integer)1547 st_translate_color(union pipe_color_union *color,
1548 GLenum baseFormat, GLboolean is_integer)
1549 {
1550 if (is_integer) {
1551 int *ci = color->i;
1552
1553 switch (baseFormat) {
1554 case GL_RED:
1555 ci[1] = 0;
1556 ci[2] = 0;
1557 ci[3] = 1;
1558 break;
1559 case GL_RG:
1560 ci[2] = 0;
1561 ci[3] = 1;
1562 break;
1563 case GL_RGB:
1564 ci[3] = 1;
1565 break;
1566 case GL_ALPHA:
1567 ci[0] = ci[1] = ci[2] = 0;
1568 break;
1569 case GL_LUMINANCE:
1570 ci[1] = ci[2] = ci[0];
1571 ci[3] = 1;
1572 break;
1573 case GL_LUMINANCE_ALPHA:
1574 ci[1] = ci[2] = ci[0];
1575 break;
1576 /* Stencil border is tricky on some hw. Help drivers a little here. */
1577 case GL_STENCIL_INDEX:
1578 case GL_INTENSITY:
1579 ci[1] = ci[2] = ci[3] = ci[0];
1580 break;
1581 }
1582 }
1583 else {
1584 float *cf = color->f;
1585
1586 switch (baseFormat) {
1587 case GL_RED:
1588 cf[1] = 0.0F;
1589 cf[2] = 0.0F;
1590 cf[3] = 1.0F;
1591 break;
1592 case GL_RG:
1593 cf[2] = 0.0F;
1594 cf[3] = 1.0F;
1595 break;
1596 case GL_RGB:
1597 cf[3] = 1.0F;
1598 break;
1599 case GL_ALPHA:
1600 cf[0] = cf[1] = cf[2] = 0.0F;
1601 break;
1602 case GL_LUMINANCE:
1603 cf[1] = cf[2] = cf[0];
1604 cf[3] = 1.0F;
1605 break;
1606 case GL_LUMINANCE_ALPHA:
1607 cf[1] = cf[2] = cf[0];
1608 break;
1609 case GL_INTENSITY:
1610 cf[1] = cf[2] = cf[3] = cf[0];
1611 break;
1612 }
1613 }
1614 }
1615