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mesa: Fix some signed-unsigned comparison warnings
[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/glformats.h"
38 #include "main/texgetimage.h"
39 #include "main/teximage.h"
40 #include "main/texstore.h"
41 #include "main/image.h"
42 #include "main/macros.h"
43
44 #include "pipe/p_context.h"
45 #include "pipe/p_defines.h"
46 #include "pipe/p_screen.h"
47 #include "util/u_format.h"
48 #include "st_cb_texture.h"
49 #include "st_context.h"
50 #include "st_format.h"
51
52
53 /**
54 * Translate Mesa format to Gallium format.
55 */
56 enum pipe_format
57 st_mesa_format_to_pipe_format(struct st_context *st, mesa_format mesaFormat)
58 {
59 switch (mesaFormat) {
60 case MESA_FORMAT_A8B8G8R8_UNORM:
61 return PIPE_FORMAT_ABGR8888_UNORM;
62 case MESA_FORMAT_R8G8B8A8_UNORM:
63 return PIPE_FORMAT_RGBA8888_UNORM;
64 case MESA_FORMAT_B8G8R8A8_UNORM:
65 return PIPE_FORMAT_BGRA8888_UNORM;
66 case MESA_FORMAT_A8R8G8B8_UNORM:
67 return PIPE_FORMAT_ARGB8888_UNORM;
68 case MESA_FORMAT_X8B8G8R8_UNORM:
69 return PIPE_FORMAT_XBGR8888_UNORM;
70 case MESA_FORMAT_R8G8B8X8_UNORM:
71 return PIPE_FORMAT_RGBX8888_UNORM;
72 case MESA_FORMAT_B8G8R8X8_UNORM:
73 return PIPE_FORMAT_BGRX8888_UNORM;
74 case MESA_FORMAT_X8R8G8B8_UNORM:
75 return PIPE_FORMAT_XRGB8888_UNORM;
76 case MESA_FORMAT_B5G5R5A1_UNORM:
77 return PIPE_FORMAT_B5G5R5A1_UNORM;
78 case MESA_FORMAT_B4G4R4A4_UNORM:
79 return PIPE_FORMAT_B4G4R4A4_UNORM;
80 case MESA_FORMAT_B5G6R5_UNORM:
81 return PIPE_FORMAT_B5G6R5_UNORM;
82 case MESA_FORMAT_B2G3R3_UNORM:
83 return PIPE_FORMAT_B2G3R3_UNORM;
84 case MESA_FORMAT_B10G10R10A2_UNORM:
85 return PIPE_FORMAT_B10G10R10A2_UNORM;
86 case MESA_FORMAT_R10G10B10A2_UNORM:
87 return PIPE_FORMAT_R10G10B10A2_UNORM;
88 case MESA_FORMAT_L4A4_UNORM:
89 return PIPE_FORMAT_L4A4_UNORM;
90 case MESA_FORMAT_L8A8_UNORM:
91 return PIPE_FORMAT_LA88_UNORM;
92 case MESA_FORMAT_A8L8_UNORM:
93 return PIPE_FORMAT_AL88_UNORM;
94 case MESA_FORMAT_L16A16_UNORM:
95 return PIPE_FORMAT_LA1616_UNORM;
96 case MESA_FORMAT_A16L16_UNORM:
97 return PIPE_FORMAT_AL1616_UNORM;
98 case MESA_FORMAT_A_UNORM8:
99 return PIPE_FORMAT_A8_UNORM;
100 case MESA_FORMAT_A_UNORM16:
101 return PIPE_FORMAT_A16_UNORM;
102 case MESA_FORMAT_L_UNORM8:
103 return PIPE_FORMAT_L8_UNORM;
104 case MESA_FORMAT_L_UNORM16:
105 return PIPE_FORMAT_L16_UNORM;
106 case MESA_FORMAT_I_UNORM8:
107 return PIPE_FORMAT_I8_UNORM;
108 case MESA_FORMAT_I_UNORM16:
109 return PIPE_FORMAT_I16_UNORM;
110 case MESA_FORMAT_Z_UNORM16:
111 return PIPE_FORMAT_Z16_UNORM;
112 case MESA_FORMAT_Z_UNORM32:
113 return PIPE_FORMAT_Z32_UNORM;
114 case MESA_FORMAT_S8_UINT_Z24_UNORM:
115 return PIPE_FORMAT_S8_UINT_Z24_UNORM;
116 case MESA_FORMAT_Z24_UNORM_S8_UINT:
117 return PIPE_FORMAT_Z24_UNORM_S8_UINT;
118 case MESA_FORMAT_X8_UINT_Z24_UNORM:
119 return PIPE_FORMAT_X8Z24_UNORM;
120 case MESA_FORMAT_Z24_UNORM_X8_UINT:
121 return PIPE_FORMAT_Z24X8_UNORM;
122 case MESA_FORMAT_S_UINT8:
123 return PIPE_FORMAT_S8_UINT;
124 case MESA_FORMAT_Z_FLOAT32:
125 return PIPE_FORMAT_Z32_FLOAT;
126 case MESA_FORMAT_Z32_FLOAT_S8X24_UINT:
127 return PIPE_FORMAT_Z32_FLOAT_S8X24_UINT;
128 case MESA_FORMAT_YCBCR:
129 return PIPE_FORMAT_UYVY;
130 case MESA_FORMAT_YCBCR_REV:
131 return PIPE_FORMAT_YUYV;
132 case MESA_FORMAT_RGB_DXT1:
133 return PIPE_FORMAT_DXT1_RGB;
134 case MESA_FORMAT_RGBA_DXT1:
135 return PIPE_FORMAT_DXT1_RGBA;
136 case MESA_FORMAT_RGBA_DXT3:
137 return PIPE_FORMAT_DXT3_RGBA;
138 case MESA_FORMAT_RGBA_DXT5:
139 return PIPE_FORMAT_DXT5_RGBA;
140 case MESA_FORMAT_SRGB_DXT1:
141 return PIPE_FORMAT_DXT1_SRGB;
142 case MESA_FORMAT_SRGBA_DXT1:
143 return PIPE_FORMAT_DXT1_SRGBA;
144 case MESA_FORMAT_SRGBA_DXT3:
145 return PIPE_FORMAT_DXT3_SRGBA;
146 case MESA_FORMAT_SRGBA_DXT5:
147 return PIPE_FORMAT_DXT5_SRGBA;
148 case MESA_FORMAT_L8A8_SRGB:
149 return PIPE_FORMAT_LA88_SRGB;
150 case MESA_FORMAT_A8L8_SRGB:
151 return PIPE_FORMAT_AL88_SRGB;
152 case MESA_FORMAT_L_SRGB8:
153 return PIPE_FORMAT_L8_SRGB;
154 case MESA_FORMAT_BGR_SRGB8:
155 return PIPE_FORMAT_R8G8B8_SRGB;
156 case MESA_FORMAT_A8B8G8R8_SRGB:
157 return PIPE_FORMAT_ABGR8888_SRGB;
158 case MESA_FORMAT_R8G8B8A8_SRGB:
159 return PIPE_FORMAT_RGBA8888_SRGB;
160 case MESA_FORMAT_B8G8R8A8_SRGB:
161 return PIPE_FORMAT_BGRA8888_SRGB;
162 case MESA_FORMAT_A8R8G8B8_SRGB:
163 return PIPE_FORMAT_ARGB8888_SRGB;
164 case MESA_FORMAT_RGBA_FLOAT32:
165 return PIPE_FORMAT_R32G32B32A32_FLOAT;
166 case MESA_FORMAT_RGBA_FLOAT16:
167 return PIPE_FORMAT_R16G16B16A16_FLOAT;
168 case MESA_FORMAT_RGB_FLOAT32:
169 return PIPE_FORMAT_R32G32B32_FLOAT;
170 case MESA_FORMAT_RGB_FLOAT16:
171 return PIPE_FORMAT_R16G16B16_FLOAT;
172 case MESA_FORMAT_LA_FLOAT32:
173 return PIPE_FORMAT_L32A32_FLOAT;
174 case MESA_FORMAT_LA_FLOAT16:
175 return PIPE_FORMAT_L16A16_FLOAT;
176 case MESA_FORMAT_L_FLOAT32:
177 return PIPE_FORMAT_L32_FLOAT;
178 case MESA_FORMAT_L_FLOAT16:
179 return PIPE_FORMAT_L16_FLOAT;
180 case MESA_FORMAT_A_FLOAT32:
181 return PIPE_FORMAT_A32_FLOAT;
182 case MESA_FORMAT_A_FLOAT16:
183 return PIPE_FORMAT_A16_FLOAT;
184 case MESA_FORMAT_I_FLOAT32:
185 return PIPE_FORMAT_I32_FLOAT;
186 case MESA_FORMAT_I_FLOAT16:
187 return PIPE_FORMAT_I16_FLOAT;
188 case MESA_FORMAT_R_FLOAT32:
189 return PIPE_FORMAT_R32_FLOAT;
190 case MESA_FORMAT_R_FLOAT16:
191 return PIPE_FORMAT_R16_FLOAT;
192 case MESA_FORMAT_RG_FLOAT32:
193 return PIPE_FORMAT_R32G32_FLOAT;
194 case MESA_FORMAT_RG_FLOAT16:
195 return PIPE_FORMAT_R16G16_FLOAT;
196
197 case MESA_FORMAT_R_UNORM8:
198 return PIPE_FORMAT_R8_UNORM;
199 case MESA_FORMAT_R_UNORM16:
200 return PIPE_FORMAT_R16_UNORM;
201 case MESA_FORMAT_R8G8_UNORM:
202 return PIPE_FORMAT_RG88_UNORM;
203 case MESA_FORMAT_G8R8_UNORM:
204 return PIPE_FORMAT_GR88_UNORM;
205 case MESA_FORMAT_R16G16_UNORM:
206 return PIPE_FORMAT_RG1616_UNORM;
207 case MESA_FORMAT_G16R16_UNORM:
208 return PIPE_FORMAT_GR1616_UNORM;
209 case MESA_FORMAT_RGBA_UNORM16:
210 return PIPE_FORMAT_R16G16B16A16_UNORM;
211
212 /* signed int formats */
213 case MESA_FORMAT_A_UINT8:
214 return PIPE_FORMAT_A8_UINT;
215 case MESA_FORMAT_A_UINT16:
216 return PIPE_FORMAT_A16_UINT;
217 case MESA_FORMAT_A_UINT32:
218 return PIPE_FORMAT_A32_UINT;
219
220 case MESA_FORMAT_A_SINT8:
221 return PIPE_FORMAT_A8_SINT;
222 case MESA_FORMAT_A_SINT16:
223 return PIPE_FORMAT_A16_SINT;
224 case MESA_FORMAT_A_SINT32:
225 return PIPE_FORMAT_A32_SINT;
226
227 case MESA_FORMAT_I_UINT8:
228 return PIPE_FORMAT_I8_UINT;
229 case MESA_FORMAT_I_UINT16:
230 return PIPE_FORMAT_I16_UINT;
231 case MESA_FORMAT_I_UINT32:
232 return PIPE_FORMAT_I32_UINT;
233
234 case MESA_FORMAT_I_SINT8:
235 return PIPE_FORMAT_I8_SINT;
236 case MESA_FORMAT_I_SINT16:
237 return PIPE_FORMAT_I16_SINT;
238 case MESA_FORMAT_I_SINT32:
239 return PIPE_FORMAT_I32_SINT;
240
241 case MESA_FORMAT_L_UINT8:
242 return PIPE_FORMAT_L8_UINT;
243 case MESA_FORMAT_L_UINT16:
244 return PIPE_FORMAT_L16_UINT;
245 case MESA_FORMAT_L_UINT32:
246 return PIPE_FORMAT_L32_UINT;
247
248 case MESA_FORMAT_L_SINT8:
249 return PIPE_FORMAT_L8_SINT;
250 case MESA_FORMAT_L_SINT16:
251 return PIPE_FORMAT_L16_SINT;
252 case MESA_FORMAT_L_SINT32:
253 return PIPE_FORMAT_L32_SINT;
254
255 case MESA_FORMAT_LA_UINT8:
256 return PIPE_FORMAT_L8A8_UINT;
257 case MESA_FORMAT_LA_UINT16:
258 return PIPE_FORMAT_L16A16_UINT;
259 case MESA_FORMAT_LA_UINT32:
260 return PIPE_FORMAT_L32A32_UINT;
261
262 case MESA_FORMAT_LA_SINT8:
263 return PIPE_FORMAT_L8A8_SINT;
264 case MESA_FORMAT_LA_SINT16:
265 return PIPE_FORMAT_L16A16_SINT;
266 case MESA_FORMAT_LA_SINT32:
267 return PIPE_FORMAT_L32A32_SINT;
268
269 case MESA_FORMAT_R_SINT8:
270 return PIPE_FORMAT_R8_SINT;
271 case MESA_FORMAT_RG_SINT8:
272 return PIPE_FORMAT_R8G8_SINT;
273 case MESA_FORMAT_RGB_SINT8:
274 return PIPE_FORMAT_R8G8B8_SINT;
275 case MESA_FORMAT_RGBA_SINT8:
276 return PIPE_FORMAT_R8G8B8A8_SINT;
277 case MESA_FORMAT_R_SINT16:
278 return PIPE_FORMAT_R16_SINT;
279 case MESA_FORMAT_RG_SINT16:
280 return PIPE_FORMAT_R16G16_SINT;
281 case MESA_FORMAT_RGB_SINT16:
282 return PIPE_FORMAT_R16G16B16_SINT;
283 case MESA_FORMAT_RGBA_SINT16:
284 return PIPE_FORMAT_R16G16B16A16_SINT;
285 case MESA_FORMAT_R_SINT32:
286 return PIPE_FORMAT_R32_SINT;
287 case MESA_FORMAT_RG_SINT32:
288 return PIPE_FORMAT_R32G32_SINT;
289 case MESA_FORMAT_RGB_SINT32:
290 return PIPE_FORMAT_R32G32B32_SINT;
291 case MESA_FORMAT_RGBA_SINT32:
292 return PIPE_FORMAT_R32G32B32A32_SINT;
293
294 /* unsigned int formats */
295 case MESA_FORMAT_R_UINT8:
296 return PIPE_FORMAT_R8_UINT;
297 case MESA_FORMAT_RG_UINT8:
298 return PIPE_FORMAT_R8G8_UINT;
299 case MESA_FORMAT_RGB_UINT8:
300 return PIPE_FORMAT_R8G8B8_UINT;
301 case MESA_FORMAT_RGBA_UINT8:
302 return PIPE_FORMAT_R8G8B8A8_UINT;
303 case MESA_FORMAT_R_UINT16:
304 return PIPE_FORMAT_R16_UINT;
305 case MESA_FORMAT_RG_UINT16:
306 return PIPE_FORMAT_R16G16_UINT;
307 case MESA_FORMAT_RGB_UINT16:
308 return PIPE_FORMAT_R16G16B16_UINT;
309 case MESA_FORMAT_RGBA_UINT16:
310 return PIPE_FORMAT_R16G16B16A16_UINT;
311 case MESA_FORMAT_R_UINT32:
312 return PIPE_FORMAT_R32_UINT;
313 case MESA_FORMAT_RG_UINT32:
314 return PIPE_FORMAT_R32G32_UINT;
315 case MESA_FORMAT_RGB_UINT32:
316 return PIPE_FORMAT_R32G32B32_UINT;
317 case MESA_FORMAT_RGBA_UINT32:
318 return PIPE_FORMAT_R32G32B32A32_UINT;
319
320 case MESA_FORMAT_R_RGTC1_UNORM:
321 return PIPE_FORMAT_RGTC1_UNORM;
322 case MESA_FORMAT_R_RGTC1_SNORM:
323 return PIPE_FORMAT_RGTC1_SNORM;
324 case MESA_FORMAT_RG_RGTC2_UNORM:
325 return PIPE_FORMAT_RGTC2_UNORM;
326 case MESA_FORMAT_RG_RGTC2_SNORM:
327 return PIPE_FORMAT_RGTC2_SNORM;
328
329 case MESA_FORMAT_L_LATC1_UNORM:
330 return PIPE_FORMAT_LATC1_UNORM;
331 case MESA_FORMAT_L_LATC1_SNORM:
332 return PIPE_FORMAT_LATC1_SNORM;
333 case MESA_FORMAT_LA_LATC2_UNORM:
334 return PIPE_FORMAT_LATC2_UNORM;
335 case MESA_FORMAT_LA_LATC2_SNORM:
336 return PIPE_FORMAT_LATC2_SNORM;
337
338 /* The destination RGBA format mustn't be changed, because it's also
339 * a destination format of the unpack/decompression function. */
340 case MESA_FORMAT_ETC1_RGB8:
341 return st->has_etc1 ? PIPE_FORMAT_ETC1_RGB8 : PIPE_FORMAT_R8G8B8A8_UNORM;
342
343 case MESA_FORMAT_BPTC_RGBA_UNORM:
344 return PIPE_FORMAT_BPTC_RGBA_UNORM;
345 case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
346 return PIPE_FORMAT_BPTC_SRGBA;
347 case MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT:
348 return PIPE_FORMAT_BPTC_RGB_FLOAT;
349 case MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT:
350 return PIPE_FORMAT_BPTC_RGB_UFLOAT;
351
352 /* signed normalized formats */
353 case MESA_FORMAT_R_SNORM8:
354 return PIPE_FORMAT_R8_SNORM;
355 case MESA_FORMAT_R8G8_SNORM:
356 return PIPE_FORMAT_RG88_SNORM;
357 case MESA_FORMAT_G8R8_SNORM:
358 return PIPE_FORMAT_GR88_SNORM;
359 case MESA_FORMAT_R8G8B8A8_SNORM:
360 return PIPE_FORMAT_RGBA8888_SNORM;
361 case MESA_FORMAT_A8B8G8R8_SNORM:
362 return PIPE_FORMAT_ABGR8888_SNORM;
363
364 case MESA_FORMAT_A_SNORM8:
365 return PIPE_FORMAT_A8_SNORM;
366 case MESA_FORMAT_L_SNORM8:
367 return PIPE_FORMAT_L8_SNORM;
368 case MESA_FORMAT_L8A8_SNORM:
369 return PIPE_FORMAT_LA88_SNORM;
370 case MESA_FORMAT_A8L8_SNORM:
371 return PIPE_FORMAT_AL88_SNORM;
372 case MESA_FORMAT_I_SNORM8:
373 return PIPE_FORMAT_I8_SNORM;
374
375 case MESA_FORMAT_R_SNORM16:
376 return PIPE_FORMAT_R16_SNORM;
377 case MESA_FORMAT_R16G16_SNORM:
378 return PIPE_FORMAT_RG1616_SNORM;
379 case MESA_FORMAT_G16R16_SNORM:
380 return PIPE_FORMAT_GR1616_SNORM;
381 case MESA_FORMAT_RGBA_SNORM16:
382 return PIPE_FORMAT_R16G16B16A16_SNORM;
383
384 case MESA_FORMAT_A_SNORM16:
385 return PIPE_FORMAT_A16_SNORM;
386 case MESA_FORMAT_L_SNORM16:
387 return PIPE_FORMAT_L16_SNORM;
388 case MESA_FORMAT_LA_SNORM16:
389 return PIPE_FORMAT_L16A16_SNORM;
390 case MESA_FORMAT_I_SNORM16:
391 return PIPE_FORMAT_I16_SNORM;
392
393 case MESA_FORMAT_R9G9B9E5_FLOAT:
394 return PIPE_FORMAT_R9G9B9E5_FLOAT;
395 case MESA_FORMAT_R11G11B10_FLOAT:
396 return PIPE_FORMAT_R11G11B10_FLOAT;
397 case MESA_FORMAT_B10G10R10A2_UINT:
398 return PIPE_FORMAT_B10G10R10A2_UINT;
399 case MESA_FORMAT_R10G10B10A2_UINT:
400 return PIPE_FORMAT_R10G10B10A2_UINT;
401
402 case MESA_FORMAT_B4G4R4X4_UNORM:
403 return PIPE_FORMAT_B4G4R4X4_UNORM;
404 case MESA_FORMAT_B5G5R5X1_UNORM:
405 return PIPE_FORMAT_B5G5R5X1_UNORM;
406 case MESA_FORMAT_R8G8B8X8_SNORM:
407 return PIPE_FORMAT_RGBX8888_SNORM;
408 case MESA_FORMAT_X8B8G8R8_SNORM:
409 return PIPE_FORMAT_XBGR8888_SNORM;
410 case MESA_FORMAT_R8G8B8X8_SRGB:
411 return PIPE_FORMAT_RGBX8888_SRGB;
412 case MESA_FORMAT_X8B8G8R8_SRGB:
413 return PIPE_FORMAT_XBGR8888_SRGB;
414 case MESA_FORMAT_RGBX_UINT8:
415 return PIPE_FORMAT_R8G8B8X8_UINT;
416 case MESA_FORMAT_RGBX_SINT8:
417 return PIPE_FORMAT_R8G8B8X8_SINT;
418 case MESA_FORMAT_B10G10R10X2_UNORM:
419 return PIPE_FORMAT_B10G10R10X2_UNORM;
420 case MESA_FORMAT_RGBX_UNORM16:
421 return PIPE_FORMAT_R16G16B16X16_UNORM;
422 case MESA_FORMAT_RGBX_SNORM16:
423 return PIPE_FORMAT_R16G16B16X16_SNORM;
424 case MESA_FORMAT_RGBX_FLOAT16:
425 return PIPE_FORMAT_R16G16B16X16_FLOAT;
426 case MESA_FORMAT_RGBX_UINT16:
427 return PIPE_FORMAT_R16G16B16X16_UINT;
428 case MESA_FORMAT_RGBX_SINT16:
429 return PIPE_FORMAT_R16G16B16X16_SINT;
430 case MESA_FORMAT_RGBX_FLOAT32:
431 return PIPE_FORMAT_R32G32B32X32_FLOAT;
432 case MESA_FORMAT_RGBX_UINT32:
433 return PIPE_FORMAT_R32G32B32X32_UINT;
434 case MESA_FORMAT_RGBX_SINT32:
435 return PIPE_FORMAT_R32G32B32X32_SINT;
436
437 case MESA_FORMAT_B8G8R8X8_SRGB:
438 return PIPE_FORMAT_BGRX8888_SRGB;
439 case MESA_FORMAT_X8R8G8B8_SRGB:
440 return PIPE_FORMAT_XRGB8888_SRGB;
441
442 /* ETC2 formats are emulated as uncompressed ones.
443 * The destination formats mustn't be changed, because they are also
444 * destination formats of the unpack/decompression function. */
445 case MESA_FORMAT_ETC2_RGB8:
446 case MESA_FORMAT_ETC2_RGBA8_EAC:
447 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
448 return PIPE_FORMAT_R8G8B8A8_UNORM;
449 case MESA_FORMAT_ETC2_SRGB8:
450 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
451 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
452 return PIPE_FORMAT_B8G8R8A8_SRGB;
453 case MESA_FORMAT_ETC2_R11_EAC:
454 return PIPE_FORMAT_R16_UNORM;
455 case MESA_FORMAT_ETC2_RG11_EAC:
456 return PIPE_FORMAT_R16G16_UNORM;
457 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
458 return PIPE_FORMAT_R16_SNORM;
459 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
460 return PIPE_FORMAT_R16G16_SNORM;
461
462 default:
463 return PIPE_FORMAT_NONE;
464 }
465 }
466
467
468 /**
469 * Translate Gallium format to Mesa format.
470 */
471 mesa_format
472 st_pipe_format_to_mesa_format(enum pipe_format format)
473 {
474 switch (format) {
475 case PIPE_FORMAT_ABGR8888_UNORM:
476 return MESA_FORMAT_A8B8G8R8_UNORM;
477 case PIPE_FORMAT_RGBA8888_UNORM:
478 return MESA_FORMAT_R8G8B8A8_UNORM;
479 case PIPE_FORMAT_BGRA8888_UNORM:
480 return MESA_FORMAT_B8G8R8A8_UNORM;
481 case PIPE_FORMAT_ARGB8888_UNORM:
482 return MESA_FORMAT_A8R8G8B8_UNORM;
483 case PIPE_FORMAT_XBGR8888_UNORM:
484 return MESA_FORMAT_X8B8G8R8_UNORM;
485 case PIPE_FORMAT_RGBX8888_UNORM:
486 return MESA_FORMAT_R8G8B8X8_UNORM;
487 case PIPE_FORMAT_BGRX8888_UNORM:
488 return MESA_FORMAT_B8G8R8X8_UNORM;
489 case PIPE_FORMAT_XRGB8888_UNORM:
490 return MESA_FORMAT_X8R8G8B8_UNORM;
491 case PIPE_FORMAT_B5G5R5A1_UNORM:
492 return MESA_FORMAT_B5G5R5A1_UNORM;
493 case PIPE_FORMAT_B4G4R4A4_UNORM:
494 return MESA_FORMAT_B4G4R4A4_UNORM;
495 case PIPE_FORMAT_B5G6R5_UNORM:
496 return MESA_FORMAT_B5G6R5_UNORM;
497 case PIPE_FORMAT_B2G3R3_UNORM:
498 return MESA_FORMAT_B2G3R3_UNORM;
499 case PIPE_FORMAT_B10G10R10A2_UNORM:
500 return MESA_FORMAT_B10G10R10A2_UNORM;
501 case PIPE_FORMAT_R10G10B10A2_UNORM:
502 return MESA_FORMAT_R10G10B10A2_UNORM;
503 case PIPE_FORMAT_L4A4_UNORM:
504 return MESA_FORMAT_L4A4_UNORM;
505 case PIPE_FORMAT_LA88_UNORM:
506 return MESA_FORMAT_L8A8_UNORM;
507 case PIPE_FORMAT_AL88_UNORM:
508 return MESA_FORMAT_A8L8_UNORM;
509 case PIPE_FORMAT_LA1616_UNORM:
510 return MESA_FORMAT_L16A16_UNORM;
511 case PIPE_FORMAT_AL1616_UNORM:
512 return MESA_FORMAT_A16L16_UNORM;
513 case PIPE_FORMAT_A8_UNORM:
514 return MESA_FORMAT_A_UNORM8;
515 case PIPE_FORMAT_A16_UNORM:
516 return MESA_FORMAT_A_UNORM16;
517 case PIPE_FORMAT_L8_UNORM:
518 return MESA_FORMAT_L_UNORM8;
519 case PIPE_FORMAT_L16_UNORM:
520 return MESA_FORMAT_L_UNORM16;
521 case PIPE_FORMAT_I8_UNORM:
522 return MESA_FORMAT_I_UNORM8;
523 case PIPE_FORMAT_I16_UNORM:
524 return MESA_FORMAT_I_UNORM16;
525 case PIPE_FORMAT_S8_UINT:
526 return MESA_FORMAT_S_UINT8;
527
528 case PIPE_FORMAT_R16G16B16A16_UNORM:
529 return MESA_FORMAT_RGBA_UNORM16;
530
531 case PIPE_FORMAT_Z16_UNORM:
532 return MESA_FORMAT_Z_UNORM16;
533 case PIPE_FORMAT_Z32_UNORM:
534 return MESA_FORMAT_Z_UNORM32;
535 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
536 return MESA_FORMAT_S8_UINT_Z24_UNORM;
537 case PIPE_FORMAT_X8Z24_UNORM:
538 return MESA_FORMAT_X8_UINT_Z24_UNORM;
539 case PIPE_FORMAT_Z24X8_UNORM:
540 return MESA_FORMAT_Z24_UNORM_X8_UINT;
541 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
542 return MESA_FORMAT_Z24_UNORM_S8_UINT;
543 case PIPE_FORMAT_Z32_FLOAT:
544 return MESA_FORMAT_Z_FLOAT32;
545 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
546 return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
547
548 case PIPE_FORMAT_UYVY:
549 return MESA_FORMAT_YCBCR;
550 case PIPE_FORMAT_YUYV:
551 return MESA_FORMAT_YCBCR_REV;
552
553 case PIPE_FORMAT_DXT1_RGB:
554 return MESA_FORMAT_RGB_DXT1;
555 case PIPE_FORMAT_DXT1_RGBA:
556 return MESA_FORMAT_RGBA_DXT1;
557 case PIPE_FORMAT_DXT3_RGBA:
558 return MESA_FORMAT_RGBA_DXT3;
559 case PIPE_FORMAT_DXT5_RGBA:
560 return MESA_FORMAT_RGBA_DXT5;
561 case PIPE_FORMAT_DXT1_SRGB:
562 return MESA_FORMAT_SRGB_DXT1;
563 case PIPE_FORMAT_DXT1_SRGBA:
564 return MESA_FORMAT_SRGBA_DXT1;
565 case PIPE_FORMAT_DXT3_SRGBA:
566 return MESA_FORMAT_SRGBA_DXT3;
567 case PIPE_FORMAT_DXT5_SRGBA:
568 return MESA_FORMAT_SRGBA_DXT5;
569 case PIPE_FORMAT_LA88_SRGB:
570 return MESA_FORMAT_L8A8_SRGB;
571 case PIPE_FORMAT_AL88_SRGB:
572 return MESA_FORMAT_A8L8_SRGB;
573 case PIPE_FORMAT_L8_SRGB:
574 return MESA_FORMAT_L_SRGB8;
575 case PIPE_FORMAT_R8G8B8_SRGB:
576 return MESA_FORMAT_BGR_SRGB8;
577 case PIPE_FORMAT_ABGR8888_SRGB:
578 return MESA_FORMAT_A8B8G8R8_SRGB;
579 case PIPE_FORMAT_RGBA8888_SRGB:
580 return MESA_FORMAT_R8G8B8A8_SRGB;
581 case PIPE_FORMAT_BGRA8888_SRGB:
582 return MESA_FORMAT_B8G8R8A8_SRGB;
583 case PIPE_FORMAT_ARGB8888_SRGB:
584 return MESA_FORMAT_A8R8G8B8_SRGB;
585 case PIPE_FORMAT_R32G32B32A32_FLOAT:
586 return MESA_FORMAT_RGBA_FLOAT32;
587 case PIPE_FORMAT_R16G16B16A16_FLOAT:
588 return MESA_FORMAT_RGBA_FLOAT16;
589 case PIPE_FORMAT_R32G32B32_FLOAT:
590 return MESA_FORMAT_RGB_FLOAT32;
591 case PIPE_FORMAT_R16G16B16_FLOAT:
592 return MESA_FORMAT_RGB_FLOAT16;
593 case PIPE_FORMAT_L32A32_FLOAT:
594 return MESA_FORMAT_LA_FLOAT32;
595 case PIPE_FORMAT_L16A16_FLOAT:
596 return MESA_FORMAT_LA_FLOAT16;
597 case PIPE_FORMAT_L32_FLOAT:
598 return MESA_FORMAT_L_FLOAT32;
599 case PIPE_FORMAT_L16_FLOAT:
600 return MESA_FORMAT_L_FLOAT16;
601 case PIPE_FORMAT_A32_FLOAT:
602 return MESA_FORMAT_A_FLOAT32;
603 case PIPE_FORMAT_A16_FLOAT:
604 return MESA_FORMAT_A_FLOAT16;
605 case PIPE_FORMAT_I32_FLOAT:
606 return MESA_FORMAT_I_FLOAT32;
607 case PIPE_FORMAT_I16_FLOAT:
608 return MESA_FORMAT_I_FLOAT16;
609 case PIPE_FORMAT_R32_FLOAT:
610 return MESA_FORMAT_R_FLOAT32;
611 case PIPE_FORMAT_R16_FLOAT:
612 return MESA_FORMAT_R_FLOAT16;
613 case PIPE_FORMAT_R32G32_FLOAT:
614 return MESA_FORMAT_RG_FLOAT32;
615 case PIPE_FORMAT_R16G16_FLOAT:
616 return MESA_FORMAT_RG_FLOAT16;
617
618 case PIPE_FORMAT_R8_UNORM:
619 return MESA_FORMAT_R_UNORM8;
620 case PIPE_FORMAT_R16_UNORM:
621 return MESA_FORMAT_R_UNORM16;
622 case PIPE_FORMAT_RG88_UNORM:
623 return MESA_FORMAT_R8G8_UNORM;
624 case PIPE_FORMAT_GR88_UNORM:
625 return MESA_FORMAT_G8R8_UNORM;
626 case PIPE_FORMAT_RG1616_UNORM:
627 return MESA_FORMAT_R16G16_UNORM;
628 case PIPE_FORMAT_GR1616_UNORM:
629 return MESA_FORMAT_G16R16_UNORM;
630
631 case PIPE_FORMAT_A8_UINT:
632 return MESA_FORMAT_A_UINT8;
633 case PIPE_FORMAT_A16_UINT:
634 return MESA_FORMAT_A_UINT16;
635 case PIPE_FORMAT_A32_UINT:
636 return MESA_FORMAT_A_UINT32;
637 case PIPE_FORMAT_A8_SINT:
638 return MESA_FORMAT_A_SINT8;
639 case PIPE_FORMAT_A16_SINT:
640 return MESA_FORMAT_A_SINT16;
641 case PIPE_FORMAT_A32_SINT:
642 return MESA_FORMAT_A_SINT32;
643
644 case PIPE_FORMAT_I8_UINT:
645 return MESA_FORMAT_I_UINT8;
646 case PIPE_FORMAT_I16_UINT:
647 return MESA_FORMAT_I_UINT16;
648 case PIPE_FORMAT_I32_UINT:
649 return MESA_FORMAT_I_UINT32;
650 case PIPE_FORMAT_I8_SINT:
651 return MESA_FORMAT_I_SINT8;
652 case PIPE_FORMAT_I16_SINT:
653 return MESA_FORMAT_I_SINT16;
654 case PIPE_FORMAT_I32_SINT:
655 return MESA_FORMAT_I_SINT32;
656
657 case PIPE_FORMAT_L8_UINT:
658 return MESA_FORMAT_L_UINT8;
659 case PIPE_FORMAT_L16_UINT:
660 return MESA_FORMAT_L_UINT16;
661 case PIPE_FORMAT_L32_UINT:
662 return MESA_FORMAT_L_UINT32;
663 case PIPE_FORMAT_L8_SINT:
664 return MESA_FORMAT_L_SINT8;
665 case PIPE_FORMAT_L16_SINT:
666 return MESA_FORMAT_L_SINT16;
667 case PIPE_FORMAT_L32_SINT:
668 return MESA_FORMAT_L_SINT32;
669
670 case PIPE_FORMAT_L8A8_UINT:
671 return MESA_FORMAT_LA_UINT8;
672 case PIPE_FORMAT_L16A16_UINT:
673 return MESA_FORMAT_LA_UINT16;
674 case PIPE_FORMAT_L32A32_UINT:
675 return MESA_FORMAT_LA_UINT32;
676 case PIPE_FORMAT_L8A8_SINT:
677 return MESA_FORMAT_LA_SINT8;
678 case PIPE_FORMAT_L16A16_SINT:
679 return MESA_FORMAT_LA_SINT16;
680 case PIPE_FORMAT_L32A32_SINT:
681 return MESA_FORMAT_LA_SINT32;
682
683 case PIPE_FORMAT_R8_SINT:
684 return MESA_FORMAT_R_SINT8;
685 case PIPE_FORMAT_R8G8_SINT:
686 return MESA_FORMAT_RG_SINT8;
687 case PIPE_FORMAT_R8G8B8_SINT:
688 return MESA_FORMAT_RGB_SINT8;
689 case PIPE_FORMAT_R8G8B8A8_SINT:
690 return MESA_FORMAT_RGBA_SINT8;
691
692 case PIPE_FORMAT_R16_SINT:
693 return MESA_FORMAT_R_SINT16;
694 case PIPE_FORMAT_R16G16_SINT:
695 return MESA_FORMAT_RG_SINT16;
696 case PIPE_FORMAT_R16G16B16_SINT:
697 return MESA_FORMAT_RGB_SINT16;
698 case PIPE_FORMAT_R16G16B16A16_SINT:
699 return MESA_FORMAT_RGBA_SINT16;
700
701 case PIPE_FORMAT_R32_SINT:
702 return MESA_FORMAT_R_SINT32;
703 case PIPE_FORMAT_R32G32_SINT:
704 return MESA_FORMAT_RG_SINT32;
705 case PIPE_FORMAT_R32G32B32_SINT:
706 return MESA_FORMAT_RGB_SINT32;
707 case PIPE_FORMAT_R32G32B32A32_SINT:
708 return MESA_FORMAT_RGBA_SINT32;
709
710 /* unsigned int formats */
711 case PIPE_FORMAT_R8_UINT:
712 return MESA_FORMAT_R_UINT8;
713 case PIPE_FORMAT_R8G8_UINT:
714 return MESA_FORMAT_RG_UINT8;
715 case PIPE_FORMAT_R8G8B8_UINT:
716 return MESA_FORMAT_RGB_UINT8;
717 case PIPE_FORMAT_R8G8B8A8_UINT:
718 return MESA_FORMAT_RGBA_UINT8;
719
720 case PIPE_FORMAT_R16_UINT:
721 return MESA_FORMAT_R_UINT16;
722 case PIPE_FORMAT_R16G16_UINT:
723 return MESA_FORMAT_RG_UINT16;
724 case PIPE_FORMAT_R16G16B16_UINT:
725 return MESA_FORMAT_RGB_UINT16;
726 case PIPE_FORMAT_R16G16B16A16_UINT:
727 return MESA_FORMAT_RGBA_UINT16;
728
729 case PIPE_FORMAT_R32_UINT:
730 return MESA_FORMAT_R_UINT32;
731 case PIPE_FORMAT_R32G32_UINT:
732 return MESA_FORMAT_RG_UINT32;
733 case PIPE_FORMAT_R32G32B32_UINT:
734 return MESA_FORMAT_RGB_UINT32;
735 case PIPE_FORMAT_R32G32B32A32_UINT:
736 return MESA_FORMAT_RGBA_UINT32;
737
738 case PIPE_FORMAT_RGTC1_UNORM:
739 return MESA_FORMAT_R_RGTC1_UNORM;
740 case PIPE_FORMAT_RGTC1_SNORM:
741 return MESA_FORMAT_R_RGTC1_SNORM;
742 case PIPE_FORMAT_RGTC2_UNORM:
743 return MESA_FORMAT_RG_RGTC2_UNORM;
744 case PIPE_FORMAT_RGTC2_SNORM:
745 return MESA_FORMAT_RG_RGTC2_SNORM;
746
747 case PIPE_FORMAT_LATC1_UNORM:
748 return MESA_FORMAT_L_LATC1_UNORM;
749 case PIPE_FORMAT_LATC1_SNORM:
750 return MESA_FORMAT_L_LATC1_SNORM;
751 case PIPE_FORMAT_LATC2_UNORM:
752 return MESA_FORMAT_LA_LATC2_UNORM;
753 case PIPE_FORMAT_LATC2_SNORM:
754 return MESA_FORMAT_LA_LATC2_SNORM;
755
756 case PIPE_FORMAT_ETC1_RGB8:
757 return MESA_FORMAT_ETC1_RGB8;
758
759 case PIPE_FORMAT_BPTC_RGBA_UNORM:
760 return MESA_FORMAT_BPTC_RGBA_UNORM;
761 case PIPE_FORMAT_BPTC_SRGBA:
762 return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
763 case PIPE_FORMAT_BPTC_RGB_FLOAT:
764 return MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT;
765 case PIPE_FORMAT_BPTC_RGB_UFLOAT:
766 return MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT;
767
768 /* signed normalized formats */
769 case PIPE_FORMAT_R8_SNORM:
770 return MESA_FORMAT_R_SNORM8;
771 case PIPE_FORMAT_RG88_SNORM:
772 return MESA_FORMAT_R8G8_SNORM;
773 case PIPE_FORMAT_GR88_SNORM:
774 return MESA_FORMAT_G8R8_SNORM;
775 case PIPE_FORMAT_RGBA8888_SNORM:
776 return MESA_FORMAT_R8G8B8A8_SNORM;
777 case PIPE_FORMAT_ABGR8888_SNORM:
778 return MESA_FORMAT_A8B8G8R8_SNORM;
779
780 case PIPE_FORMAT_A8_SNORM:
781 return MESA_FORMAT_A_SNORM8;
782 case PIPE_FORMAT_L8_SNORM:
783 return MESA_FORMAT_L_SNORM8;
784 case PIPE_FORMAT_LA88_SNORM:
785 return MESA_FORMAT_L8A8_SNORM;
786 case PIPE_FORMAT_AL88_SNORM:
787 return MESA_FORMAT_A8L8_SNORM;
788 case PIPE_FORMAT_I8_SNORM:
789 return MESA_FORMAT_I_SNORM8;
790
791 case PIPE_FORMAT_R16_SNORM:
792 return MESA_FORMAT_R_SNORM16;
793 case PIPE_FORMAT_RG1616_SNORM:
794 return MESA_FORMAT_R16G16_SNORM;
795 case PIPE_FORMAT_GR1616_SNORM:
796 return MESA_FORMAT_G16R16_SNORM;
797 case PIPE_FORMAT_R16G16B16A16_SNORM:
798 return MESA_FORMAT_RGBA_SNORM16;
799
800 case PIPE_FORMAT_A16_SNORM:
801 return MESA_FORMAT_A_SNORM16;
802 case PIPE_FORMAT_L16_SNORM:
803 return MESA_FORMAT_L_SNORM16;
804 case PIPE_FORMAT_L16A16_SNORM:
805 return MESA_FORMAT_LA_SNORM16;
806 case PIPE_FORMAT_I16_SNORM:
807 return MESA_FORMAT_I_SNORM16;
808
809 case PIPE_FORMAT_R9G9B9E5_FLOAT:
810 return MESA_FORMAT_R9G9B9E5_FLOAT;
811 case PIPE_FORMAT_R11G11B10_FLOAT:
812 return MESA_FORMAT_R11G11B10_FLOAT;
813
814 case PIPE_FORMAT_B10G10R10A2_UINT:
815 return MESA_FORMAT_B10G10R10A2_UINT;
816 case PIPE_FORMAT_R10G10B10A2_UINT:
817 return MESA_FORMAT_R10G10B10A2_UINT;
818
819 case PIPE_FORMAT_B4G4R4X4_UNORM:
820 return MESA_FORMAT_B4G4R4X4_UNORM;
821 case PIPE_FORMAT_B5G5R5X1_UNORM:
822 return MESA_FORMAT_B5G5R5X1_UNORM;
823 case PIPE_FORMAT_RGBX8888_SNORM:
824 return MESA_FORMAT_R8G8B8X8_SNORM;
825 case PIPE_FORMAT_XBGR8888_SNORM:
826 return MESA_FORMAT_X8B8G8R8_SNORM;
827 case PIPE_FORMAT_RGBX8888_SRGB:
828 return MESA_FORMAT_R8G8B8X8_SRGB;
829 case PIPE_FORMAT_XBGR8888_SRGB:
830 return MESA_FORMAT_X8B8G8R8_SRGB;
831 case PIPE_FORMAT_R8G8B8X8_UINT:
832 return MESA_FORMAT_RGBX_UINT8;
833 case PIPE_FORMAT_R8G8B8X8_SINT:
834 return MESA_FORMAT_RGBX_SINT8;
835 case PIPE_FORMAT_B10G10R10X2_UNORM:
836 return MESA_FORMAT_B10G10R10X2_UNORM;
837 case PIPE_FORMAT_R16G16B16X16_UNORM:
838 return MESA_FORMAT_RGBX_UNORM16;
839 case PIPE_FORMAT_R16G16B16X16_SNORM:
840 return MESA_FORMAT_RGBX_SNORM16;
841 case PIPE_FORMAT_R16G16B16X16_FLOAT:
842 return MESA_FORMAT_RGBX_FLOAT16;
843 case PIPE_FORMAT_R16G16B16X16_UINT:
844 return MESA_FORMAT_RGBX_UINT16;
845 case PIPE_FORMAT_R16G16B16X16_SINT:
846 return MESA_FORMAT_RGBX_SINT16;
847 case PIPE_FORMAT_R32G32B32X32_FLOAT:
848 return MESA_FORMAT_RGBX_FLOAT32;
849 case PIPE_FORMAT_R32G32B32X32_UINT:
850 return MESA_FORMAT_RGBX_UINT32;
851 case PIPE_FORMAT_R32G32B32X32_SINT:
852 return MESA_FORMAT_RGBX_SINT32;
853
854 case PIPE_FORMAT_BGRX8888_SRGB:
855 return MESA_FORMAT_B8G8R8X8_SRGB;
856 case PIPE_FORMAT_XRGB8888_SRGB:
857 return MESA_FORMAT_X8R8G8B8_SRGB;
858
859 default:
860 return MESA_FORMAT_NONE;
861 }
862 }
863
864
865 /**
866 * Debug only: check that the two functions above correctly map
867 * Mesa formats to Gallium formats and back again.
868 */
869 static void
870 test_format_conversion(struct st_context *st)
871 {
872 GLuint i;
873
874 /* test all Mesa formats */
875 for (i = 1; i < MESA_FORMAT_COUNT; i++) {
876 enum pipe_format pf;
877
878 /* ETC formats are translated differently, skip them. */
879 if (_mesa_is_format_etc2(i))
880 continue;
881 if (i == MESA_FORMAT_ETC1_RGB8 && !st->has_etc1)
882 continue;
883
884 pf = st_mesa_format_to_pipe_format(st, i);
885 if (pf != PIPE_FORMAT_NONE) {
886 mesa_format mf = st_pipe_format_to_mesa_format(pf);
887 assert(mf == i);
888 }
889 }
890
891 /* Test all Gallium formats */
892 for (i = 1; i < PIPE_FORMAT_COUNT; i++) {
893 mesa_format mf = st_pipe_format_to_mesa_format(i);
894
895 /* ETC formats are translated differently, skip them. */
896 if (i == PIPE_FORMAT_ETC1_RGB8 && !st->has_etc1)
897 continue;
898
899 if (mf != MESA_FORMAT_NONE) {
900 enum pipe_format pf = st_mesa_format_to_pipe_format(st, mf);
901 assert(pf == i);
902 }
903 }
904 }
905
906
907 /**
908 * Map GL texture formats to Gallium pipe formats.
909 */
910 struct format_mapping
911 {
912 GLenum glFormats[18]; /**< list of GLenum formats, 0-terminated */
913 enum pipe_format pipeFormats[13]; /**< list of pipe formats, 0-terminated */
914 };
915
916
917 #define DEFAULT_RGBA_FORMATS \
918 PIPE_FORMAT_B8G8R8A8_UNORM, \
919 PIPE_FORMAT_R8G8B8A8_UNORM, \
920 PIPE_FORMAT_A8R8G8B8_UNORM, \
921 PIPE_FORMAT_A8B8G8R8_UNORM, \
922 0
923
924 #define DEFAULT_RGB_FORMATS \
925 PIPE_FORMAT_B8G8R8X8_UNORM, \
926 PIPE_FORMAT_R8G8B8X8_UNORM, \
927 PIPE_FORMAT_X8R8G8B8_UNORM, \
928 PIPE_FORMAT_X8B8G8R8_UNORM, \
929 PIPE_FORMAT_B5G6R5_UNORM, \
930 DEFAULT_RGBA_FORMATS
931
932 #define DEFAULT_SRGBA_FORMATS \
933 PIPE_FORMAT_B8G8R8A8_SRGB, \
934 PIPE_FORMAT_R8G8B8A8_SRGB, \
935 PIPE_FORMAT_A8R8G8B8_SRGB, \
936 PIPE_FORMAT_A8B8G8R8_SRGB, \
937 0
938
939 #define DEFAULT_DEPTH_FORMATS \
940 PIPE_FORMAT_Z24X8_UNORM, \
941 PIPE_FORMAT_X8Z24_UNORM, \
942 PIPE_FORMAT_Z16_UNORM, \
943 PIPE_FORMAT_Z24_UNORM_S8_UINT, \
944 PIPE_FORMAT_S8_UINT_Z24_UNORM, \
945 0
946
947 #define DEFAULT_SNORM8_RGBA_FORMATS \
948 PIPE_FORMAT_R8G8B8A8_SNORM, \
949 0
950
951 #define DEFAULT_UNORM16_RGBA_FORMATS \
952 PIPE_FORMAT_R16G16B16A16_UNORM, \
953 DEFAULT_RGBA_FORMATS
954
955
956 /**
957 * This table maps OpenGL texture format enums to Gallium pipe_format enums.
958 * Multiple GL enums might map to multiple pipe_formats.
959 * The first pipe format in the list that's supported is the one that's chosen.
960 */
961 static const struct format_mapping format_map[] = {
962 /* Basic RGB, RGBA formats */
963 {
964 { GL_RGB10, 0 },
965 { PIPE_FORMAT_B10G10R10X2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
966 DEFAULT_RGB_FORMATS }
967 },
968 {
969 { GL_RGB10_A2, 0 },
970 { PIPE_FORMAT_B10G10R10A2_UNORM, PIPE_FORMAT_R10G10B10A2_UNORM,
971 DEFAULT_RGBA_FORMATS }
972 },
973 {
974 { 4, GL_RGBA, GL_RGBA8, 0 },
975 { DEFAULT_RGBA_FORMATS }
976 },
977 {
978 { GL_BGRA, 0 },
979 { DEFAULT_RGBA_FORMATS }
980 },
981 {
982 { 3, GL_RGB, GL_RGB8, 0 },
983 { DEFAULT_RGB_FORMATS }
984 },
985 {
986 { GL_RGB12, GL_RGB16, 0 },
987 { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
988 DEFAULT_RGB_FORMATS }
989 },
990 {
991 { GL_RGBA12, GL_RGBA16, 0 },
992 { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
993 },
994 {
995 { GL_RGBA4, GL_RGBA2, 0 },
996 { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
997 },
998 {
999 { GL_RGB5_A1, 0 },
1000 { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
1001 },
1002 {
1003 { GL_R3_G3_B2, 0 },
1004 { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
1005 PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGB_FORMATS }
1006 },
1007 {
1008 { GL_RGB4 },
1009 { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM,
1010 DEFAULT_RGB_FORMATS }
1011 },
1012 {
1013 { GL_RGB5 },
1014 { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
1015 DEFAULT_RGB_FORMATS }
1016 },
1017 {
1018 { GL_RGB565 },
1019 { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS }
1020 },
1021
1022 /* basic Alpha formats */
1023 {
1024 { GL_ALPHA12, GL_ALPHA16, 0 },
1025 { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
1026 DEFAULT_RGBA_FORMATS }
1027 },
1028 {
1029 { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
1030 { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
1031 },
1032
1033 /* basic Luminance formats */
1034 {
1035 { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
1036 { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
1037 },
1038 {
1039 { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
1040 { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
1041 },
1042
1043 /* basic Luminance/Alpha formats */
1044 {
1045 { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
1046 GL_LUMINANCE16_ALPHA16, 0},
1047 { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
1048 DEFAULT_RGBA_FORMATS }
1049 },
1050 {
1051 { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
1052 { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1053 },
1054 {
1055 { GL_LUMINANCE4_ALPHA4, 0 },
1056 { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
1057 DEFAULT_RGBA_FORMATS }
1058 },
1059
1060 /* basic Intensity formats */
1061 {
1062 { GL_INTENSITY12, GL_INTENSITY16, 0 },
1063 { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
1064 },
1065 {
1066 { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
1067 GL_COMPRESSED_INTENSITY, 0 },
1068 { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
1069 },
1070
1071 /* YCbCr */
1072 {
1073 { GL_YCBCR_MESA, 0 },
1074 { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
1075 },
1076
1077 /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
1078 {
1079 { GL_COMPRESSED_RGB, 0 },
1080 { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
1081 },
1082 {
1083 { GL_COMPRESSED_RGBA, 0 },
1084 { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
1085 },
1086 {
1087 { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
1088 { PIPE_FORMAT_DXT1_RGB, 0 }
1089 },
1090 {
1091 { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
1092 { PIPE_FORMAT_DXT1_RGBA, 0 }
1093 },
1094 {
1095 { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
1096 { PIPE_FORMAT_DXT3_RGBA, 0 }
1097 },
1098 {
1099 { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
1100 { PIPE_FORMAT_DXT5_RGBA, 0 }
1101 },
1102
1103 #if 0
1104 {
1105 { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
1106 { PIPE_FORMAT_RGB_FXT1, 0 }
1107 },
1108 {
1109 { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
1110 { PIPE_FORMAT_RGBA_FXT1, 0 }
1111 },
1112 #endif
1113
1114 /* Depth formats */
1115 {
1116 { GL_DEPTH_COMPONENT16, 0 },
1117 { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
1118 },
1119 {
1120 { GL_DEPTH_COMPONENT24, 0 },
1121 { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
1122 DEFAULT_DEPTH_FORMATS }
1123 },
1124 {
1125 { GL_DEPTH_COMPONENT32, 0 },
1126 { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
1127 },
1128 {
1129 { GL_DEPTH_COMPONENT, 0 },
1130 { DEFAULT_DEPTH_FORMATS }
1131 },
1132 {
1133 { GL_DEPTH_COMPONENT32F, 0 },
1134 { PIPE_FORMAT_Z32_FLOAT, 0 }
1135 },
1136
1137 /* stencil formats */
1138 {
1139 { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
1140 GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
1141 {
1142 PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
1143 PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
1144 }
1145 },
1146
1147 /* Depth / Stencil formats */
1148 {
1149 { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
1150 { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
1151 },
1152 {
1153 { GL_DEPTH32F_STENCIL8, 0 },
1154 { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
1155 },
1156
1157 /* sRGB formats */
1158 {
1159 { GL_SRGB_EXT, GL_SRGB8_EXT, 0 },
1160 { PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB,
1161 DEFAULT_SRGBA_FORMATS }
1162 },
1163 {
1164 { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
1165 { DEFAULT_SRGBA_FORMATS }
1166 },
1167 {
1168 { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
1169 { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB,
1170 PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS }
1171 },
1172 {
1173 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
1174 { PIPE_FORMAT_DXT1_SRGBA, 0 }
1175 },
1176 {
1177 { GL_COMPRESSED_SRGB_ALPHA_EXT,
1178 GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
1179 { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
1180 },
1181 {
1182 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
1183 { PIPE_FORMAT_DXT5_SRGBA, 0 }
1184 },
1185 {
1186 { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
1187 GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
1188 { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1189 },
1190 {
1191 { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT,
1192 0 },
1193 { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
1194 },
1195
1196 /* 16-bit float formats */
1197 {
1198 { GL_RGBA16F_ARB, 0 },
1199 { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1200 },
1201 {
1202 { GL_RGB16F_ARB, 0 },
1203 { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT,
1204 PIPE_FORMAT_R16G16B16A16_FLOAT,
1205 PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1206 },
1207 {
1208 { GL_LUMINANCE_ALPHA16F_ARB, 0 },
1209 { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1210 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1211 },
1212 {
1213 { GL_ALPHA16F_ARB, 0 },
1214 { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1215 PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1216 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1217 },
1218 {
1219 { GL_INTENSITY16F_ARB, 0 },
1220 { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1221 PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1222 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1223 },
1224 {
1225 { GL_LUMINANCE16F_ARB, 0 },
1226 { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1227 PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1228 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1229 },
1230 {
1231 { GL_R16F, 0 },
1232 { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1233 PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1234 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1235 },
1236 {
1237 { GL_RG16F, 0 },
1238 { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1239 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1240 },
1241
1242 /* 32-bit float formats */
1243 {
1244 { GL_RGBA32F_ARB, 0 },
1245 { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1246 },
1247 {
1248 { GL_RGB32F_ARB, 0 },
1249 { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT,
1250 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1251 },
1252 {
1253 { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1254 { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1255 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1256 },
1257 {
1258 { GL_ALPHA32F_ARB, 0 },
1259 { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1260 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
1261 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1262 },
1263 {
1264 { GL_INTENSITY32F_ARB, 0 },
1265 { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1266 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
1267 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1268 },
1269 {
1270 { GL_LUMINANCE32F_ARB, 0 },
1271 { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1272 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
1273 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1274 },
1275 {
1276 { GL_R32F, 0 },
1277 { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1278 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
1279 PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1280 },
1281 {
1282 { GL_RG32F, 0 },
1283 { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1284 PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1285 },
1286
1287 /* R, RG formats */
1288 {
1289 { GL_RED, GL_R8, 0 },
1290 { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1291 },
1292 {
1293 { GL_RG, GL_RG8, 0 },
1294 { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1295 },
1296 {
1297 { GL_R16, 0 },
1298 { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
1299 DEFAULT_UNORM16_RGBA_FORMATS }
1300 },
1301 {
1302 { GL_RG16, 0 },
1303 { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
1304 },
1305
1306 /* compressed R, RG formats */
1307 {
1308 { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1309 { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
1310 },
1311 {
1312 { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1313 { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1314 },
1315 {
1316 { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1317 { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1318 },
1319 {
1320 { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1321 { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1322 },
1323 {
1324 { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1325 { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
1326 },
1327 {
1328 { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1329 { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1330 },
1331 {
1332 { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1333 GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1334 { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1335 },
1336 {
1337 { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1338 { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1339 },
1340
1341 /* ETC1 */
1342 {
1343 { GL_ETC1_RGB8_OES, 0 },
1344 { PIPE_FORMAT_ETC1_RGB8, 0 }
1345 },
1346
1347 /* BPTC */
1348 {
1349 { GL_COMPRESSED_RGBA_BPTC_UNORM, 0 },
1350 { PIPE_FORMAT_BPTC_RGBA_UNORM, 0 },
1351 },
1352 {
1353 { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, 0 },
1354 { PIPE_FORMAT_BPTC_SRGBA, 0 },
1355 },
1356 {
1357 { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, 0 },
1358 { PIPE_FORMAT_BPTC_RGB_FLOAT, 0 },
1359 },
1360 {
1361 { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, 0 },
1362 { PIPE_FORMAT_BPTC_RGB_UFLOAT, 0 },
1363 },
1364
1365 /* signed/unsigned integer formats.
1366 */
1367 {
1368 { GL_RGBA_INTEGER_EXT,
1369 GL_BGRA_INTEGER_EXT,
1370 GL_RGBA8I_EXT, 0 },
1371 { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1372 },
1373 {
1374 { GL_RGB_INTEGER_EXT,
1375 GL_BGR_INTEGER_EXT,
1376 GL_RGB8I_EXT,
1377 GL_BLUE_INTEGER_EXT, 0 },
1378 { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT,
1379 PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1380 },
1381 {
1382 { GL_ALPHA_INTEGER_EXT,
1383 GL_ALPHA8I_EXT, 0 },
1384 { PIPE_FORMAT_A8_SINT, 0 }
1385 },
1386 {
1387 { GL_ALPHA16I_EXT, 0 },
1388 { PIPE_FORMAT_A16_SINT, 0 }
1389 },
1390 {
1391 { GL_ALPHA32I_EXT, 0 },
1392 { PIPE_FORMAT_A32_SINT, 0 }
1393 },
1394 {
1395 { GL_ALPHA8UI_EXT, 0 },
1396 { PIPE_FORMAT_A8_UINT, 0 }
1397 },
1398 {
1399 { GL_ALPHA16UI_EXT, 0 },
1400 { PIPE_FORMAT_A16_UINT, 0 }
1401 },
1402 {
1403 { GL_ALPHA32UI_EXT, 0 },
1404 { PIPE_FORMAT_A32_UINT, 0 }
1405 },
1406 {
1407 { GL_INTENSITY8I_EXT, 0 },
1408 { PIPE_FORMAT_I8_SINT, 0 }
1409 },
1410 {
1411 { GL_INTENSITY16I_EXT, 0 },
1412 { PIPE_FORMAT_I16_SINT, 0 }
1413 },
1414 {
1415 { GL_INTENSITY32I_EXT, 0 },
1416 { PIPE_FORMAT_I32_SINT, 0 }
1417 },
1418 {
1419 { GL_INTENSITY8UI_EXT, 0 },
1420 { PIPE_FORMAT_I8_UINT, 0 }
1421 },
1422 {
1423 { GL_INTENSITY16UI_EXT, 0 },
1424 { PIPE_FORMAT_I16_UINT, 0 }
1425 },
1426 {
1427 { GL_INTENSITY32UI_EXT, 0 },
1428 { PIPE_FORMAT_I32_UINT, 0 }
1429 },
1430 {
1431 { GL_LUMINANCE8I_EXT, 0 },
1432 { PIPE_FORMAT_L8_SINT, 0 }
1433 },
1434 {
1435 { GL_LUMINANCE16I_EXT, 0 },
1436 { PIPE_FORMAT_L16_SINT, 0 }
1437 },
1438 {
1439 { GL_LUMINANCE32I_EXT, 0 },
1440 { PIPE_FORMAT_L32_SINT, 0 }
1441 },
1442 {
1443 { GL_LUMINANCE_INTEGER_EXT,
1444 GL_LUMINANCE8UI_EXT, 0 },
1445 { PIPE_FORMAT_L8_UINT, 0 }
1446 },
1447 {
1448 { GL_LUMINANCE16UI_EXT, 0 },
1449 { PIPE_FORMAT_L16_UINT, 0 }
1450 },
1451 {
1452 { GL_LUMINANCE32UI_EXT, 0 },
1453 { PIPE_FORMAT_L32_UINT, 0 }
1454 },
1455 {
1456 { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1457 GL_LUMINANCE_ALPHA8I_EXT, 0 },
1458 { PIPE_FORMAT_L8A8_SINT, 0 }
1459 },
1460 {
1461 { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1462 { PIPE_FORMAT_L16A16_SINT, 0 }
1463 },
1464 {
1465 { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1466 { PIPE_FORMAT_L32A32_SINT, 0 }
1467 },
1468 {
1469 { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1470 { PIPE_FORMAT_L8A8_UINT, 0 }
1471 },
1472 {
1473 { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1474 { PIPE_FORMAT_L16A16_UINT, 0 }
1475 },
1476 {
1477 { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1478 { PIPE_FORMAT_L32A32_UINT, 0 }
1479 },
1480 {
1481 { GL_RGB16I_EXT, 0 },
1482 { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT,
1483 PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1484 },
1485 {
1486 { GL_RGBA16I_EXT, 0 },
1487 { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1488 },
1489 {
1490 { GL_RGB32I_EXT, 0 },
1491 { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT,
1492 PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1493 },
1494 {
1495 { GL_RGBA32I_EXT, 0 },
1496 { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1497 },
1498 {
1499 { GL_RGBA8UI_EXT, 0 },
1500 { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1501 },
1502 {
1503 { GL_RGB8UI_EXT, 0 },
1504 { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT,
1505 PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1506 },
1507 {
1508 { GL_RGB16UI_EXT, 0 },
1509 { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT,
1510 PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1511 },
1512 {
1513 { GL_RGBA16UI_EXT, 0 },
1514 { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1515 },
1516 {
1517 { GL_RGB32UI_EXT, 0},
1518 { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT,
1519 PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1520 },
1521 {
1522 { GL_RGBA32UI_EXT, 0},
1523 { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1524 },
1525 {
1526 { GL_R8I, GL_RED_INTEGER_EXT, 0},
1527 { PIPE_FORMAT_R8_SINT, 0},
1528 },
1529 {
1530 { GL_R16I, 0},
1531 { PIPE_FORMAT_R16_SINT, 0},
1532 },
1533 {
1534 { GL_R32I, 0},
1535 { PIPE_FORMAT_R32_SINT, 0},
1536 },
1537 {
1538 { GL_R8UI, 0},
1539 { PIPE_FORMAT_R8_UINT, 0},
1540 },
1541 {
1542 { GL_R16UI, 0},
1543 { PIPE_FORMAT_R16_UINT, 0},
1544 },
1545 {
1546 { GL_R32UI, 0},
1547 { PIPE_FORMAT_R32_UINT, 0},
1548 },
1549 {
1550 { GL_RG8I, GL_GREEN_INTEGER_EXT, 0},
1551 { PIPE_FORMAT_R8G8_SINT, 0},
1552 },
1553 {
1554 { GL_RG16I, 0},
1555 { PIPE_FORMAT_R16G16_SINT, 0},
1556 },
1557 {
1558 { GL_RG32I, 0},
1559 { PIPE_FORMAT_R32G32_SINT, 0},
1560 },
1561 {
1562 { GL_RG8UI, 0},
1563 { PIPE_FORMAT_R8G8_UINT, 0},
1564 },
1565 {
1566 { GL_RG16UI, 0},
1567 { PIPE_FORMAT_R16G16_UINT, 0},
1568 },
1569 {
1570 { GL_RG32UI, 0},
1571 { PIPE_FORMAT_R32G32_UINT, 0},
1572 },
1573 /* signed normalized formats */
1574 {
1575 { GL_RED_SNORM, GL_R8_SNORM, 0 },
1576 { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1577 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1578 },
1579 {
1580 { GL_R16_SNORM, 0 },
1581 { PIPE_FORMAT_R16_SNORM,
1582 PIPE_FORMAT_R16G16_SNORM,
1583 PIPE_FORMAT_R16G16B16A16_SNORM,
1584 PIPE_FORMAT_R8_SNORM,
1585 PIPE_FORMAT_R8G8_SNORM,
1586 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1587 },
1588 {
1589 { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1590 { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1591 },
1592 {
1593 { GL_RG16_SNORM, 0 },
1594 { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1595 PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1596 },
1597 {
1598 { GL_RGB_SNORM, GL_RGB8_SNORM, 0 },
1599 { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1600 },
1601 {
1602 { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1603 { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1604 },
1605 {
1606 { GL_RGB16_SNORM, 0 },
1607 { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1608 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1609 },
1610 {
1611 { GL_RGBA16_SNORM, 0 },
1612 { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1613 },
1614 {
1615 { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1616 { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1617 },
1618 {
1619 { GL_ALPHA16_SNORM, 0 },
1620 { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1621 PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1622 },
1623 {
1624 { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1625 { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1626 },
1627 {
1628 { GL_LUMINANCE16_SNORM, 0 },
1629 { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1630 PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1631 },
1632 {
1633 { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1634 { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1635 },
1636 {
1637 { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1638 { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1639 PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1640 },
1641 {
1642 { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1643 { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1644 },
1645 {
1646 { GL_INTENSITY16_SNORM, 0 },
1647 { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1648 PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1649 },
1650 {
1651 { GL_RGB9_E5, 0 },
1652 { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1653 },
1654 {
1655 { GL_R11F_G11F_B10F, 0 },
1656 { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1657 },
1658 {
1659 { GL_RGB10_A2UI, 0 },
1660 { PIPE_FORMAT_R10G10B10A2_UINT, PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1661 },
1662 };
1663
1664
1665 /**
1666 * Return first supported format from the given list.
1667 * \param allow_dxt indicates whether it's OK to return a DXT format.
1668 */
1669 static enum pipe_format
1670 find_supported_format(struct pipe_screen *screen,
1671 const enum pipe_format formats[],
1672 enum pipe_texture_target target,
1673 unsigned sample_count,
1674 unsigned tex_usage,
1675 boolean allow_dxt)
1676 {
1677 uint i;
1678 for (i = 0; formats[i]; i++) {
1679 if (screen->is_format_supported(screen, formats[i], target,
1680 sample_count, tex_usage)) {
1681 if (!allow_dxt && util_format_is_s3tc(formats[i])) {
1682 /* we can't return a dxt format, continue searching */
1683 continue;
1684 }
1685
1686 return formats[i];
1687 }
1688 }
1689 return PIPE_FORMAT_NONE;
1690 }
1691
1692 struct exact_format_mapping
1693 {
1694 GLenum format;
1695 GLenum type;
1696 enum pipe_format pformat;
1697 };
1698
1699 static const struct exact_format_mapping rgba8888_tbl[] =
1700 {
1701 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_ABGR8888_UNORM },
1702 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_ABGR8888_UNORM },
1703 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_RGBA8888_UNORM },
1704 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_RGBA8888_UNORM },
1705 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_ARGB8888_UNORM },
1706 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_BGRA8888_UNORM },
1707 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8A8_UNORM },
1708 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_A8B8G8R8_UNORM },
1709 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8A8_UNORM },
1710 { 0, 0, 0 }
1711 };
1712
1713 static const struct exact_format_mapping rgbx8888_tbl[] =
1714 {
1715 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_XBGR8888_UNORM },
1716 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_XBGR8888_UNORM },
1717 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_RGBX8888_UNORM },
1718 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_RGBX8888_UNORM },
1719 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_XRGB8888_UNORM },
1720 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_BGRX8888_UNORM },
1721 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8X8_UNORM },
1722 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_X8B8G8R8_UNORM },
1723 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8X8_UNORM },
1724 { 0, 0, 0 }
1725 };
1726
1727 static const struct exact_format_mapping rgba1010102_tbl[] =
1728 {
1729 { GL_BGRA, GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
1730 /* No Mesa formats for these Gallium formats:
1731 { GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
1732 { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2, PIPE_FORMAT_R10G10B10A2_UNORM },
1733 { GL_ABGR_EXT, GL_UNSIGNED_INT, PIPE_FORMAT_R10G10B10A2_UNORM },
1734 */
1735 { 0, 0, 0 }
1736 };
1737
1738 /**
1739 * If there is an exact pipe_format match for {internalFormat, format, type}
1740 * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
1741 */
1742 static enum pipe_format
1743 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1744 {
1745 uint i;
1746 const struct exact_format_mapping* tbl;
1747
1748 if (format == GL_NONE || type == GL_NONE)
1749 return PIPE_FORMAT_NONE;
1750
1751 switch (internalFormat) {
1752 case 4:
1753 case GL_RGBA:
1754 case GL_RGBA8:
1755 tbl = rgba8888_tbl;
1756 break;
1757 case 3:
1758 case GL_RGB:
1759 case GL_RGB8:
1760 tbl = rgbx8888_tbl;
1761 break;
1762 case GL_RGB10_A2:
1763 tbl = rgba1010102_tbl;
1764 break;
1765 default:
1766 return PIPE_FORMAT_NONE;
1767 }
1768
1769 for (i = 0; tbl[i].format; i++)
1770 if (tbl[i].format == format && tbl[i].type == type)
1771 return tbl[i].pformat;
1772
1773 return PIPE_FORMAT_NONE;
1774 }
1775
1776 /**
1777 * Given an OpenGL internalFormat value for a texture or surface, return
1778 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1779 * This is called during glTexImage2D, for example.
1780 *
1781 * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1782 * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1783 * we want render-to-texture ability.
1784 *
1785 * \param internalFormat the user value passed to glTexImage2D
1786 * \param target one of PIPE_TEXTURE_x
1787 * \param bindings bitmask of PIPE_BIND_x flags.
1788 * \param allow_dxt indicates whether it's OK to return a DXT format. This
1789 * only matters when internalFormat names a generic or
1790 * specific compressed format. And that should only happen
1791 * when we're getting called from gl[Copy]TexImage().
1792 */
1793 enum pipe_format
1794 st_choose_format(struct st_context *st, GLenum internalFormat,
1795 GLenum format, GLenum type,
1796 enum pipe_texture_target target, unsigned sample_count,
1797 unsigned bindings, boolean allow_dxt)
1798 {
1799 struct pipe_screen *screen = st->pipe->screen;
1800 unsigned i;
1801 int j;
1802 enum pipe_format pf;
1803
1804 #ifdef DEBUG
1805 {
1806 static boolean firstCall = TRUE;
1807 if (firstCall) {
1808 test_format_conversion(st);
1809 firstCall = FALSE;
1810 }
1811 }
1812 #else
1813 (void) test_format_conversion;
1814 #endif
1815
1816 /* can't render to compressed formats at this time */
1817 if (_mesa_is_compressed_format(st->ctx, internalFormat)
1818 && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1819 return PIPE_FORMAT_NONE;
1820 }
1821
1822 /* search for exact matches */
1823 pf = find_exact_format(internalFormat, format, type);
1824 if (pf != PIPE_FORMAT_NONE &&
1825 screen->is_format_supported(screen, pf,
1826 target, sample_count, bindings))
1827 return pf;
1828
1829 /* search table for internalFormat */
1830 for (i = 0; i < Elements(format_map); i++) {
1831 const struct format_mapping *mapping = &format_map[i];
1832 for (j = 0; mapping->glFormats[j]; j++) {
1833 if (mapping->glFormats[j] == internalFormat) {
1834 /* Found the desired internal format. Find first pipe format
1835 * which is supported by the driver.
1836 */
1837 return find_supported_format(screen, mapping->pipeFormats,
1838 target, sample_count, bindings,
1839 allow_dxt);
1840 }
1841 }
1842 }
1843
1844 _mesa_problem(NULL, "unhandled format!\n");
1845 return PIPE_FORMAT_NONE;
1846 }
1847
1848
1849 /**
1850 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1851 */
1852 enum pipe_format
1853 st_choose_renderbuffer_format(struct st_context *st,
1854 GLenum internalFormat, unsigned sample_count)
1855 {
1856 uint usage;
1857 if (_mesa_is_depth_or_stencil_format(internalFormat))
1858 usage = PIPE_BIND_DEPTH_STENCIL;
1859 else
1860 usage = PIPE_BIND_RENDER_TARGET;
1861 return st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1862 PIPE_TEXTURE_2D, sample_count, usage, FALSE);
1863 }
1864
1865
1866 /**
1867 * Given an OpenGL user-requested format and type, and swapBytes state,
1868 * return the format which exactly matches those parameters, so that
1869 * a memcpy-based transfer can be done.
1870 *
1871 * If no format is supported, return PIPE_FORMAT_NONE.
1872 */
1873 enum pipe_format
1874 st_choose_matching_format(struct st_context *st, unsigned bind,
1875 GLenum format, GLenum type, GLboolean swapBytes)
1876 {
1877 struct pipe_screen *screen = st->pipe->screen;
1878 mesa_format mesa_format;
1879
1880 for (mesa_format = 1; mesa_format < MESA_FORMAT_COUNT; mesa_format++) {
1881 if (_mesa_get_format_color_encoding(mesa_format) == GL_SRGB) {
1882 continue;
1883 }
1884 if (_mesa_get_format_bits(mesa_format, GL_TEXTURE_INTENSITY_SIZE) > 0) {
1885 /* If `format` is GL_RED/GL_RED_INTEGER, then we might match some
1886 * intensity formats, which we don't want.
1887 */
1888 continue;
1889 }
1890
1891 if (_mesa_format_matches_format_and_type(mesa_format, format, type,
1892 swapBytes)) {
1893 enum pipe_format format =
1894 st_mesa_format_to_pipe_format(st, mesa_format);
1895
1896 if (format &&
1897 screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0,
1898 bind)) {
1899 return format;
1900 }
1901 /* It's unlikely to find 2 matching Mesa formats. */
1902 break;
1903 }
1904 }
1905 return PIPE_FORMAT_NONE;
1906 }
1907
1908
1909 /**
1910 * Called via ctx->Driver.ChooseTextureFormat().
1911 */
1912 mesa_format
1913 st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
1914 GLint internalFormat,
1915 GLenum format, GLenum type)
1916 {
1917 const boolean want_renderable =
1918 internalFormat == 3 || internalFormat == 4 ||
1919 internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1920 internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1921 internalFormat == GL_BGRA;
1922 struct st_context *st = st_context(ctx);
1923 enum pipe_format pFormat;
1924 unsigned bindings;
1925 enum pipe_texture_target pTarget = gl_target_to_pipe(target);
1926
1927 if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) {
1928 /* We don't do compression for these texture targets because of
1929 * difficulty with sub-texture updates on non-block boundaries, etc.
1930 * So change the internal format request to an uncompressed format.
1931 */
1932 internalFormat =
1933 _mesa_generic_compressed_format_to_uncompressed_format(internalFormat);
1934 }
1935
1936 /* GL textures may wind up being render targets, but we don't know
1937 * that in advance. Specify potential render target flags now.
1938 */
1939 bindings = PIPE_BIND_SAMPLER_VIEW;
1940 if (want_renderable) {
1941 if (_mesa_is_depth_or_stencil_format(internalFormat))
1942 bindings |= PIPE_BIND_DEPTH_STENCIL;
1943 else
1944 bindings |= PIPE_BIND_RENDER_TARGET;
1945 }
1946
1947 /* GLES allows the driver to choose any format which matches
1948 * the format+type combo, because GLES only supports unsized internal
1949 * formats and expects the driver to choose whatever suits it.
1950 */
1951 if (_mesa_is_gles(ctx)) {
1952 GLenum baseFormat = _mesa_base_tex_format(ctx, internalFormat);
1953 GLenum basePackFormat = _mesa_base_pack_format(format);
1954 GLenum iformat = internalFormat;
1955
1956 /* Treat GL_BGRA as GL_RGBA. */
1957 if (iformat == GL_BGRA)
1958 iformat = GL_RGBA;
1959
1960 /* Check if the internalformat is unsized and compatible
1961 * with the "format".
1962 */
1963 if (iformat == baseFormat && iformat == basePackFormat) {
1964 pFormat = st_choose_matching_format(st, bindings, format, type,
1965 ctx->Unpack.SwapBytes);
1966
1967 if (pFormat != PIPE_FORMAT_NONE)
1968 return st_pipe_format_to_mesa_format(pFormat);
1969
1970 /* try choosing format again, this time without render target bindings */
1971 pFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
1972 format, type,
1973 ctx->Unpack.SwapBytes);
1974 if (pFormat != PIPE_FORMAT_NONE)
1975 return st_pipe_format_to_mesa_format(pFormat);
1976 }
1977 }
1978
1979 pFormat = st_choose_format(st, internalFormat, format, type,
1980 pTarget, 0, bindings, ctx->Mesa_DXTn);
1981
1982 if (pFormat == PIPE_FORMAT_NONE) {
1983 /* try choosing format again, this time without render target bindings */
1984 pFormat = st_choose_format(st, internalFormat, format, type,
1985 pTarget, 0, PIPE_BIND_SAMPLER_VIEW,
1986 ctx->Mesa_DXTn);
1987 }
1988
1989 if (pFormat == PIPE_FORMAT_NONE) {
1990 /* no luck at all */
1991 return MESA_FORMAT_NONE;
1992 }
1993
1994 return st_pipe_format_to_mesa_format(pFormat);
1995 }
1996
1997
1998 /**
1999 * Called via ctx->Driver.ChooseTextureFormat().
2000 */
2001 size_t
2002 st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target,
2003 GLenum internalFormat, int samples[16])
2004 {
2005 struct st_context *st = st_context(ctx);
2006 enum pipe_format format;
2007 unsigned i, bind, num_sample_counts = 0;
2008
2009 (void) target;
2010
2011 if (_mesa_is_depth_or_stencil_format(internalFormat))
2012 bind = PIPE_BIND_DEPTH_STENCIL;
2013 else
2014 bind = PIPE_BIND_RENDER_TARGET;
2015
2016 /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
2017 * formats.
2018 */
2019 if (!ctx->Extensions.EXT_framebuffer_sRGB) {
2020 internalFormat = _mesa_get_linear_internalformat(internalFormat);
2021 }
2022
2023 /* Set sample counts in descending order. */
2024 for (i = 16; i > 1; i--) {
2025 format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
2026 PIPE_TEXTURE_2D, i, bind, FALSE);
2027
2028 if (format != PIPE_FORMAT_NONE) {
2029 samples[num_sample_counts++] = i;
2030 }
2031 }
2032
2033 if (!num_sample_counts) {
2034 samples[num_sample_counts++] = 1;
2035 }
2036
2037 return num_sample_counts;
2038 }
2039
2040
2041 /**
2042 * This is used for translating texture border color and the clear
2043 * color. For example, the clear color is interpreted according to
2044 * the renderbuffer's base format. For example, if clearing a
2045 * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
2046 * colorOut[2] = colorIn[0].
2047 * Similarly for texture border colors.
2048 */
2049 void
2050 st_translate_color(const union gl_color_union *colorIn,
2051 union pipe_color_union *colorOut,
2052 GLenum baseFormat, GLboolean is_integer)
2053 {
2054 if (is_integer) {
2055 const int *in = colorIn->i;
2056 int *out = colorOut->i;
2057
2058 switch (baseFormat) {
2059 case GL_RED:
2060 out[0] = in[0];
2061 out[1] = 0;
2062 out[2] = 0;
2063 out[3] = 1;
2064 break;
2065 case GL_RG:
2066 out[0] = in[0];
2067 out[1] = in[1];
2068 out[2] = 0;
2069 out[3] = 1;
2070 break;
2071 case GL_RGB:
2072 out[0] = in[0];
2073 out[1] = in[1];
2074 out[2] = in[2];
2075 out[3] = 1;
2076 break;
2077 case GL_ALPHA:
2078 out[0] = out[1] = out[2] = 0;
2079 out[3] = in[3];
2080 break;
2081 case GL_LUMINANCE:
2082 out[0] = out[1] = out[2] = in[0];
2083 out[3] = 1;
2084 break;
2085 case GL_LUMINANCE_ALPHA:
2086 out[0] = out[1] = out[2] = in[0];
2087 out[3] = in[3];
2088 break;
2089 case GL_INTENSITY:
2090 out[0] = out[1] = out[2] = out[3] = in[0];
2091 break;
2092 default:
2093 COPY_4V(out, in);
2094 }
2095 }
2096 else {
2097 const float *in = colorIn->f;
2098 float *out = colorOut->f;
2099
2100 switch (baseFormat) {
2101 case GL_RED:
2102 out[0] = in[0];
2103 out[1] = 0.0F;
2104 out[2] = 0.0F;
2105 out[3] = 1.0F;
2106 break;
2107 case GL_RG:
2108 out[0] = in[0];
2109 out[1] = in[1];
2110 out[2] = 0.0F;
2111 out[3] = 1.0F;
2112 break;
2113 case GL_RGB:
2114 out[0] = in[0];
2115 out[1] = in[1];
2116 out[2] = in[2];
2117 out[3] = 1.0F;
2118 break;
2119 case GL_ALPHA:
2120 out[0] = out[1] = out[2] = 0.0F;
2121 out[3] = in[3];
2122 break;
2123 case GL_LUMINANCE:
2124 out[0] = out[1] = out[2] = in[0];
2125 out[3] = 1.0F;
2126 break;
2127 case GL_LUMINANCE_ALPHA:
2128 out[0] = out[1] = out[2] = in[0];
2129 out[3] = in[3];
2130 break;
2131 case GL_INTENSITY:
2132 out[0] = out[1] = out[2] = out[3] = in[0];
2133 break;
2134 default:
2135 COPY_4V(out, in);
2136 }
2137 }
2138 }