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Merge remote-tracking branch 'mesa-public/master' into vulkan
[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 return st->has_etc2 ? PIPE_FORMAT_ETC2_RGB8 : PIPE_FORMAT_R8G8B8A8_UNORM;
447 case MESA_FORMAT_ETC2_SRGB8:
448 return st->has_etc2 ? PIPE_FORMAT_ETC2_SRGB8 : PIPE_FORMAT_B8G8R8A8_SRGB;
449 case MESA_FORMAT_ETC2_RGBA8_EAC:
450 return st->has_etc2 ? PIPE_FORMAT_ETC2_RGBA8 : PIPE_FORMAT_R8G8B8A8_UNORM;
451 case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
452 return st->has_etc2 ? PIPE_FORMAT_ETC2_SRGBA8 : PIPE_FORMAT_B8G8R8A8_SRGB;
453 case MESA_FORMAT_ETC2_R11_EAC:
454 return st->has_etc2 ? PIPE_FORMAT_ETC2_R11_UNORM : PIPE_FORMAT_R16_UNORM;
455 case MESA_FORMAT_ETC2_RG11_EAC:
456 return st->has_etc2 ? PIPE_FORMAT_ETC2_RG11_UNORM : PIPE_FORMAT_R16G16_UNORM;
457 case MESA_FORMAT_ETC2_SIGNED_R11_EAC:
458 return st->has_etc2 ? PIPE_FORMAT_ETC2_R11_SNORM : PIPE_FORMAT_R16_SNORM;
459 case MESA_FORMAT_ETC2_SIGNED_RG11_EAC:
460 return st->has_etc2 ? PIPE_FORMAT_ETC2_RG11_SNORM : PIPE_FORMAT_R16G16_SNORM;
461 case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
462 return st->has_etc2 ? PIPE_FORMAT_ETC2_RGB8A1 : PIPE_FORMAT_R8G8B8A8_UNORM;
463 case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
464 return st->has_etc2 ? PIPE_FORMAT_ETC2_SRGB8A1 : PIPE_FORMAT_B8G8R8A8_SRGB;
465
466 default:
467 return PIPE_FORMAT_NONE;
468 }
469 }
470
471
472 /**
473 * Translate Gallium format to Mesa format.
474 */
475 mesa_format
476 st_pipe_format_to_mesa_format(enum pipe_format format)
477 {
478 switch (format) {
479 case PIPE_FORMAT_ABGR8888_UNORM:
480 return MESA_FORMAT_A8B8G8R8_UNORM;
481 case PIPE_FORMAT_RGBA8888_UNORM:
482 return MESA_FORMAT_R8G8B8A8_UNORM;
483 case PIPE_FORMAT_BGRA8888_UNORM:
484 return MESA_FORMAT_B8G8R8A8_UNORM;
485 case PIPE_FORMAT_ARGB8888_UNORM:
486 return MESA_FORMAT_A8R8G8B8_UNORM;
487 case PIPE_FORMAT_XBGR8888_UNORM:
488 return MESA_FORMAT_X8B8G8R8_UNORM;
489 case PIPE_FORMAT_RGBX8888_UNORM:
490 return MESA_FORMAT_R8G8B8X8_UNORM;
491 case PIPE_FORMAT_BGRX8888_UNORM:
492 return MESA_FORMAT_B8G8R8X8_UNORM;
493 case PIPE_FORMAT_XRGB8888_UNORM:
494 return MESA_FORMAT_X8R8G8B8_UNORM;
495 case PIPE_FORMAT_B5G5R5A1_UNORM:
496 return MESA_FORMAT_B5G5R5A1_UNORM;
497 case PIPE_FORMAT_B4G4R4A4_UNORM:
498 return MESA_FORMAT_B4G4R4A4_UNORM;
499 case PIPE_FORMAT_B5G6R5_UNORM:
500 return MESA_FORMAT_B5G6R5_UNORM;
501 case PIPE_FORMAT_B2G3R3_UNORM:
502 return MESA_FORMAT_B2G3R3_UNORM;
503 case PIPE_FORMAT_B10G10R10A2_UNORM:
504 return MESA_FORMAT_B10G10R10A2_UNORM;
505 case PIPE_FORMAT_R10G10B10A2_UNORM:
506 return MESA_FORMAT_R10G10B10A2_UNORM;
507 case PIPE_FORMAT_L4A4_UNORM:
508 return MESA_FORMAT_L4A4_UNORM;
509 case PIPE_FORMAT_LA88_UNORM:
510 return MESA_FORMAT_L8A8_UNORM;
511 case PIPE_FORMAT_AL88_UNORM:
512 return MESA_FORMAT_A8L8_UNORM;
513 case PIPE_FORMAT_LA1616_UNORM:
514 return MESA_FORMAT_L16A16_UNORM;
515 case PIPE_FORMAT_AL1616_UNORM:
516 return MESA_FORMAT_A16L16_UNORM;
517 case PIPE_FORMAT_A8_UNORM:
518 return MESA_FORMAT_A_UNORM8;
519 case PIPE_FORMAT_A16_UNORM:
520 return MESA_FORMAT_A_UNORM16;
521 case PIPE_FORMAT_L8_UNORM:
522 return MESA_FORMAT_L_UNORM8;
523 case PIPE_FORMAT_L16_UNORM:
524 return MESA_FORMAT_L_UNORM16;
525 case PIPE_FORMAT_I8_UNORM:
526 return MESA_FORMAT_I_UNORM8;
527 case PIPE_FORMAT_I16_UNORM:
528 return MESA_FORMAT_I_UNORM16;
529 case PIPE_FORMAT_S8_UINT:
530 return MESA_FORMAT_S_UINT8;
531
532 case PIPE_FORMAT_R16G16B16A16_UNORM:
533 return MESA_FORMAT_RGBA_UNORM16;
534
535 case PIPE_FORMAT_Z16_UNORM:
536 return MESA_FORMAT_Z_UNORM16;
537 case PIPE_FORMAT_Z32_UNORM:
538 return MESA_FORMAT_Z_UNORM32;
539 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
540 return MESA_FORMAT_S8_UINT_Z24_UNORM;
541 case PIPE_FORMAT_X8Z24_UNORM:
542 return MESA_FORMAT_X8_UINT_Z24_UNORM;
543 case PIPE_FORMAT_Z24X8_UNORM:
544 return MESA_FORMAT_Z24_UNORM_X8_UINT;
545 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
546 return MESA_FORMAT_Z24_UNORM_S8_UINT;
547 case PIPE_FORMAT_Z32_FLOAT:
548 return MESA_FORMAT_Z_FLOAT32;
549 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
550 return MESA_FORMAT_Z32_FLOAT_S8X24_UINT;
551
552 case PIPE_FORMAT_UYVY:
553 return MESA_FORMAT_YCBCR;
554 case PIPE_FORMAT_YUYV:
555 return MESA_FORMAT_YCBCR_REV;
556
557 case PIPE_FORMAT_DXT1_RGB:
558 return MESA_FORMAT_RGB_DXT1;
559 case PIPE_FORMAT_DXT1_RGBA:
560 return MESA_FORMAT_RGBA_DXT1;
561 case PIPE_FORMAT_DXT3_RGBA:
562 return MESA_FORMAT_RGBA_DXT3;
563 case PIPE_FORMAT_DXT5_RGBA:
564 return MESA_FORMAT_RGBA_DXT5;
565 case PIPE_FORMAT_DXT1_SRGB:
566 return MESA_FORMAT_SRGB_DXT1;
567 case PIPE_FORMAT_DXT1_SRGBA:
568 return MESA_FORMAT_SRGBA_DXT1;
569 case PIPE_FORMAT_DXT3_SRGBA:
570 return MESA_FORMAT_SRGBA_DXT3;
571 case PIPE_FORMAT_DXT5_SRGBA:
572 return MESA_FORMAT_SRGBA_DXT5;
573 case PIPE_FORMAT_LA88_SRGB:
574 return MESA_FORMAT_L8A8_SRGB;
575 case PIPE_FORMAT_AL88_SRGB:
576 return MESA_FORMAT_A8L8_SRGB;
577 case PIPE_FORMAT_L8_SRGB:
578 return MESA_FORMAT_L_SRGB8;
579 case PIPE_FORMAT_R8G8B8_SRGB:
580 return MESA_FORMAT_BGR_SRGB8;
581 case PIPE_FORMAT_ABGR8888_SRGB:
582 return MESA_FORMAT_A8B8G8R8_SRGB;
583 case PIPE_FORMAT_RGBA8888_SRGB:
584 return MESA_FORMAT_R8G8B8A8_SRGB;
585 case PIPE_FORMAT_BGRA8888_SRGB:
586 return MESA_FORMAT_B8G8R8A8_SRGB;
587 case PIPE_FORMAT_ARGB8888_SRGB:
588 return MESA_FORMAT_A8R8G8B8_SRGB;
589 case PIPE_FORMAT_R32G32B32A32_FLOAT:
590 return MESA_FORMAT_RGBA_FLOAT32;
591 case PIPE_FORMAT_R16G16B16A16_FLOAT:
592 return MESA_FORMAT_RGBA_FLOAT16;
593 case PIPE_FORMAT_R32G32B32_FLOAT:
594 return MESA_FORMAT_RGB_FLOAT32;
595 case PIPE_FORMAT_R16G16B16_FLOAT:
596 return MESA_FORMAT_RGB_FLOAT16;
597 case PIPE_FORMAT_L32A32_FLOAT:
598 return MESA_FORMAT_LA_FLOAT32;
599 case PIPE_FORMAT_L16A16_FLOAT:
600 return MESA_FORMAT_LA_FLOAT16;
601 case PIPE_FORMAT_L32_FLOAT:
602 return MESA_FORMAT_L_FLOAT32;
603 case PIPE_FORMAT_L16_FLOAT:
604 return MESA_FORMAT_L_FLOAT16;
605 case PIPE_FORMAT_A32_FLOAT:
606 return MESA_FORMAT_A_FLOAT32;
607 case PIPE_FORMAT_A16_FLOAT:
608 return MESA_FORMAT_A_FLOAT16;
609 case PIPE_FORMAT_I32_FLOAT:
610 return MESA_FORMAT_I_FLOAT32;
611 case PIPE_FORMAT_I16_FLOAT:
612 return MESA_FORMAT_I_FLOAT16;
613 case PIPE_FORMAT_R32_FLOAT:
614 return MESA_FORMAT_R_FLOAT32;
615 case PIPE_FORMAT_R16_FLOAT:
616 return MESA_FORMAT_R_FLOAT16;
617 case PIPE_FORMAT_R32G32_FLOAT:
618 return MESA_FORMAT_RG_FLOAT32;
619 case PIPE_FORMAT_R16G16_FLOAT:
620 return MESA_FORMAT_RG_FLOAT16;
621
622 case PIPE_FORMAT_R8_UNORM:
623 return MESA_FORMAT_R_UNORM8;
624 case PIPE_FORMAT_R16_UNORM:
625 return MESA_FORMAT_R_UNORM16;
626 case PIPE_FORMAT_RG88_UNORM:
627 return MESA_FORMAT_R8G8_UNORM;
628 case PIPE_FORMAT_GR88_UNORM:
629 return MESA_FORMAT_G8R8_UNORM;
630 case PIPE_FORMAT_RG1616_UNORM:
631 return MESA_FORMAT_R16G16_UNORM;
632 case PIPE_FORMAT_GR1616_UNORM:
633 return MESA_FORMAT_G16R16_UNORM;
634
635 case PIPE_FORMAT_A8_UINT:
636 return MESA_FORMAT_A_UINT8;
637 case PIPE_FORMAT_A16_UINT:
638 return MESA_FORMAT_A_UINT16;
639 case PIPE_FORMAT_A32_UINT:
640 return MESA_FORMAT_A_UINT32;
641 case PIPE_FORMAT_A8_SINT:
642 return MESA_FORMAT_A_SINT8;
643 case PIPE_FORMAT_A16_SINT:
644 return MESA_FORMAT_A_SINT16;
645 case PIPE_FORMAT_A32_SINT:
646 return MESA_FORMAT_A_SINT32;
647
648 case PIPE_FORMAT_I8_UINT:
649 return MESA_FORMAT_I_UINT8;
650 case PIPE_FORMAT_I16_UINT:
651 return MESA_FORMAT_I_UINT16;
652 case PIPE_FORMAT_I32_UINT:
653 return MESA_FORMAT_I_UINT32;
654 case PIPE_FORMAT_I8_SINT:
655 return MESA_FORMAT_I_SINT8;
656 case PIPE_FORMAT_I16_SINT:
657 return MESA_FORMAT_I_SINT16;
658 case PIPE_FORMAT_I32_SINT:
659 return MESA_FORMAT_I_SINT32;
660
661 case PIPE_FORMAT_L8_UINT:
662 return MESA_FORMAT_L_UINT8;
663 case PIPE_FORMAT_L16_UINT:
664 return MESA_FORMAT_L_UINT16;
665 case PIPE_FORMAT_L32_UINT:
666 return MESA_FORMAT_L_UINT32;
667 case PIPE_FORMAT_L8_SINT:
668 return MESA_FORMAT_L_SINT8;
669 case PIPE_FORMAT_L16_SINT:
670 return MESA_FORMAT_L_SINT16;
671 case PIPE_FORMAT_L32_SINT:
672 return MESA_FORMAT_L_SINT32;
673
674 case PIPE_FORMAT_L8A8_UINT:
675 return MESA_FORMAT_LA_UINT8;
676 case PIPE_FORMAT_L16A16_UINT:
677 return MESA_FORMAT_LA_UINT16;
678 case PIPE_FORMAT_L32A32_UINT:
679 return MESA_FORMAT_LA_UINT32;
680 case PIPE_FORMAT_L8A8_SINT:
681 return MESA_FORMAT_LA_SINT8;
682 case PIPE_FORMAT_L16A16_SINT:
683 return MESA_FORMAT_LA_SINT16;
684 case PIPE_FORMAT_L32A32_SINT:
685 return MESA_FORMAT_LA_SINT32;
686
687 case PIPE_FORMAT_R8_SINT:
688 return MESA_FORMAT_R_SINT8;
689 case PIPE_FORMAT_R8G8_SINT:
690 return MESA_FORMAT_RG_SINT8;
691 case PIPE_FORMAT_R8G8B8_SINT:
692 return MESA_FORMAT_RGB_SINT8;
693 case PIPE_FORMAT_R8G8B8A8_SINT:
694 return MESA_FORMAT_RGBA_SINT8;
695
696 case PIPE_FORMAT_R16_SINT:
697 return MESA_FORMAT_R_SINT16;
698 case PIPE_FORMAT_R16G16_SINT:
699 return MESA_FORMAT_RG_SINT16;
700 case PIPE_FORMAT_R16G16B16_SINT:
701 return MESA_FORMAT_RGB_SINT16;
702 case PIPE_FORMAT_R16G16B16A16_SINT:
703 return MESA_FORMAT_RGBA_SINT16;
704
705 case PIPE_FORMAT_R32_SINT:
706 return MESA_FORMAT_R_SINT32;
707 case PIPE_FORMAT_R32G32_SINT:
708 return MESA_FORMAT_RG_SINT32;
709 case PIPE_FORMAT_R32G32B32_SINT:
710 return MESA_FORMAT_RGB_SINT32;
711 case PIPE_FORMAT_R32G32B32A32_SINT:
712 return MESA_FORMAT_RGBA_SINT32;
713
714 /* unsigned int formats */
715 case PIPE_FORMAT_R8_UINT:
716 return MESA_FORMAT_R_UINT8;
717 case PIPE_FORMAT_R8G8_UINT:
718 return MESA_FORMAT_RG_UINT8;
719 case PIPE_FORMAT_R8G8B8_UINT:
720 return MESA_FORMAT_RGB_UINT8;
721 case PIPE_FORMAT_R8G8B8A8_UINT:
722 return MESA_FORMAT_RGBA_UINT8;
723
724 case PIPE_FORMAT_R16_UINT:
725 return MESA_FORMAT_R_UINT16;
726 case PIPE_FORMAT_R16G16_UINT:
727 return MESA_FORMAT_RG_UINT16;
728 case PIPE_FORMAT_R16G16B16_UINT:
729 return MESA_FORMAT_RGB_UINT16;
730 case PIPE_FORMAT_R16G16B16A16_UINT:
731 return MESA_FORMAT_RGBA_UINT16;
732
733 case PIPE_FORMAT_R32_UINT:
734 return MESA_FORMAT_R_UINT32;
735 case PIPE_FORMAT_R32G32_UINT:
736 return MESA_FORMAT_RG_UINT32;
737 case PIPE_FORMAT_R32G32B32_UINT:
738 return MESA_FORMAT_RGB_UINT32;
739 case PIPE_FORMAT_R32G32B32A32_UINT:
740 return MESA_FORMAT_RGBA_UINT32;
741
742 case PIPE_FORMAT_RGTC1_UNORM:
743 return MESA_FORMAT_R_RGTC1_UNORM;
744 case PIPE_FORMAT_RGTC1_SNORM:
745 return MESA_FORMAT_R_RGTC1_SNORM;
746 case PIPE_FORMAT_RGTC2_UNORM:
747 return MESA_FORMAT_RG_RGTC2_UNORM;
748 case PIPE_FORMAT_RGTC2_SNORM:
749 return MESA_FORMAT_RG_RGTC2_SNORM;
750
751 case PIPE_FORMAT_LATC1_UNORM:
752 return MESA_FORMAT_L_LATC1_UNORM;
753 case PIPE_FORMAT_LATC1_SNORM:
754 return MESA_FORMAT_L_LATC1_SNORM;
755 case PIPE_FORMAT_LATC2_UNORM:
756 return MESA_FORMAT_LA_LATC2_UNORM;
757 case PIPE_FORMAT_LATC2_SNORM:
758 return MESA_FORMAT_LA_LATC2_SNORM;
759
760 case PIPE_FORMAT_ETC1_RGB8:
761 return MESA_FORMAT_ETC1_RGB8;
762
763 case PIPE_FORMAT_BPTC_RGBA_UNORM:
764 return MESA_FORMAT_BPTC_RGBA_UNORM;
765 case PIPE_FORMAT_BPTC_SRGBA:
766 return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
767 case PIPE_FORMAT_BPTC_RGB_FLOAT:
768 return MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT;
769 case PIPE_FORMAT_BPTC_RGB_UFLOAT:
770 return MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT;
771
772 /* signed normalized formats */
773 case PIPE_FORMAT_R8_SNORM:
774 return MESA_FORMAT_R_SNORM8;
775 case PIPE_FORMAT_RG88_SNORM:
776 return MESA_FORMAT_R8G8_SNORM;
777 case PIPE_FORMAT_GR88_SNORM:
778 return MESA_FORMAT_G8R8_SNORM;
779 case PIPE_FORMAT_RGBA8888_SNORM:
780 return MESA_FORMAT_R8G8B8A8_SNORM;
781 case PIPE_FORMAT_ABGR8888_SNORM:
782 return MESA_FORMAT_A8B8G8R8_SNORM;
783
784 case PIPE_FORMAT_A8_SNORM:
785 return MESA_FORMAT_A_SNORM8;
786 case PIPE_FORMAT_L8_SNORM:
787 return MESA_FORMAT_L_SNORM8;
788 case PIPE_FORMAT_LA88_SNORM:
789 return MESA_FORMAT_L8A8_SNORM;
790 case PIPE_FORMAT_AL88_SNORM:
791 return MESA_FORMAT_A8L8_SNORM;
792 case PIPE_FORMAT_I8_SNORM:
793 return MESA_FORMAT_I_SNORM8;
794
795 case PIPE_FORMAT_R16_SNORM:
796 return MESA_FORMAT_R_SNORM16;
797 case PIPE_FORMAT_RG1616_SNORM:
798 return MESA_FORMAT_R16G16_SNORM;
799 case PIPE_FORMAT_GR1616_SNORM:
800 return MESA_FORMAT_G16R16_SNORM;
801 case PIPE_FORMAT_R16G16B16A16_SNORM:
802 return MESA_FORMAT_RGBA_SNORM16;
803
804 case PIPE_FORMAT_A16_SNORM:
805 return MESA_FORMAT_A_SNORM16;
806 case PIPE_FORMAT_L16_SNORM:
807 return MESA_FORMAT_L_SNORM16;
808 case PIPE_FORMAT_L16A16_SNORM:
809 return MESA_FORMAT_LA_SNORM16;
810 case PIPE_FORMAT_I16_SNORM:
811 return MESA_FORMAT_I_SNORM16;
812
813 case PIPE_FORMAT_R9G9B9E5_FLOAT:
814 return MESA_FORMAT_R9G9B9E5_FLOAT;
815 case PIPE_FORMAT_R11G11B10_FLOAT:
816 return MESA_FORMAT_R11G11B10_FLOAT;
817
818 case PIPE_FORMAT_B10G10R10A2_UINT:
819 return MESA_FORMAT_B10G10R10A2_UINT;
820 case PIPE_FORMAT_R10G10B10A2_UINT:
821 return MESA_FORMAT_R10G10B10A2_UINT;
822
823 case PIPE_FORMAT_B4G4R4X4_UNORM:
824 return MESA_FORMAT_B4G4R4X4_UNORM;
825 case PIPE_FORMAT_B5G5R5X1_UNORM:
826 return MESA_FORMAT_B5G5R5X1_UNORM;
827 case PIPE_FORMAT_RGBX8888_SNORM:
828 return MESA_FORMAT_R8G8B8X8_SNORM;
829 case PIPE_FORMAT_XBGR8888_SNORM:
830 return MESA_FORMAT_X8B8G8R8_SNORM;
831 case PIPE_FORMAT_RGBX8888_SRGB:
832 return MESA_FORMAT_R8G8B8X8_SRGB;
833 case PIPE_FORMAT_XBGR8888_SRGB:
834 return MESA_FORMAT_X8B8G8R8_SRGB;
835 case PIPE_FORMAT_R8G8B8X8_UINT:
836 return MESA_FORMAT_RGBX_UINT8;
837 case PIPE_FORMAT_R8G8B8X8_SINT:
838 return MESA_FORMAT_RGBX_SINT8;
839 case PIPE_FORMAT_B10G10R10X2_UNORM:
840 return MESA_FORMAT_B10G10R10X2_UNORM;
841 case PIPE_FORMAT_R16G16B16X16_UNORM:
842 return MESA_FORMAT_RGBX_UNORM16;
843 case PIPE_FORMAT_R16G16B16X16_SNORM:
844 return MESA_FORMAT_RGBX_SNORM16;
845 case PIPE_FORMAT_R16G16B16X16_FLOAT:
846 return MESA_FORMAT_RGBX_FLOAT16;
847 case PIPE_FORMAT_R16G16B16X16_UINT:
848 return MESA_FORMAT_RGBX_UINT16;
849 case PIPE_FORMAT_R16G16B16X16_SINT:
850 return MESA_FORMAT_RGBX_SINT16;
851 case PIPE_FORMAT_R32G32B32X32_FLOAT:
852 return MESA_FORMAT_RGBX_FLOAT32;
853 case PIPE_FORMAT_R32G32B32X32_UINT:
854 return MESA_FORMAT_RGBX_UINT32;
855 case PIPE_FORMAT_R32G32B32X32_SINT:
856 return MESA_FORMAT_RGBX_SINT32;
857
858 case PIPE_FORMAT_BGRX8888_SRGB:
859 return MESA_FORMAT_B8G8R8X8_SRGB;
860 case PIPE_FORMAT_XRGB8888_SRGB:
861 return MESA_FORMAT_X8R8G8B8_SRGB;
862
863 case PIPE_FORMAT_ETC2_RGB8:
864 return MESA_FORMAT_ETC2_RGB8;
865 case PIPE_FORMAT_ETC2_SRGB8:
866 return MESA_FORMAT_ETC2_SRGB8;
867 case PIPE_FORMAT_ETC2_RGB8A1:
868 return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
869 case PIPE_FORMAT_ETC2_SRGB8A1:
870 return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
871 case PIPE_FORMAT_ETC2_RGBA8:
872 return MESA_FORMAT_ETC2_RGBA8_EAC;
873 case PIPE_FORMAT_ETC2_SRGBA8:
874 return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
875 case PIPE_FORMAT_ETC2_R11_UNORM:
876 return MESA_FORMAT_ETC2_R11_EAC;
877 case PIPE_FORMAT_ETC2_R11_SNORM:
878 return MESA_FORMAT_ETC2_SIGNED_R11_EAC;
879 case PIPE_FORMAT_ETC2_RG11_UNORM:
880 return MESA_FORMAT_ETC2_RG11_EAC;
881 case PIPE_FORMAT_ETC2_RG11_SNORM:
882 return MESA_FORMAT_ETC2_SIGNED_RG11_EAC;
883
884 default:
885 return MESA_FORMAT_NONE;
886 }
887 }
888
889
890 /**
891 * Debug only: check that the two functions above correctly map
892 * Mesa formats to Gallium formats and back again.
893 */
894 static void
895 test_format_conversion(struct st_context *st)
896 {
897 GLuint i;
898
899 /* test all Mesa formats */
900 for (i = 1; i < MESA_FORMAT_COUNT; i++) {
901 enum pipe_format pf;
902
903 /* ETC formats are translated differently, skip them. */
904 if (_mesa_is_format_etc2(i))
905 continue;
906 if (i == MESA_FORMAT_ETC1_RGB8 && !st->has_etc1)
907 continue;
908
909 pf = st_mesa_format_to_pipe_format(st, i);
910 if (pf != PIPE_FORMAT_NONE) {
911 mesa_format mf = st_pipe_format_to_mesa_format(pf);
912 assert(mf == i);
913 }
914 }
915
916 /* Test all Gallium formats */
917 for (i = 1; i < PIPE_FORMAT_COUNT; i++) {
918 mesa_format mf = st_pipe_format_to_mesa_format(i);
919
920 /* ETC formats are translated differently, skip them. */
921 if (i == PIPE_FORMAT_ETC1_RGB8 && !st->has_etc1)
922 continue;
923
924 if (_mesa_is_format_etc2(mf) && !st->has_etc2)
925 continue;
926
927 if (mf != MESA_FORMAT_NONE) {
928 enum pipe_format pf = st_mesa_format_to_pipe_format(st, mf);
929 assert(pf == i);
930 }
931 }
932 }
933
934
935 /**
936 * Map GL texture formats to Gallium pipe formats.
937 */
938 struct format_mapping
939 {
940 GLenum glFormats[18]; /**< list of GLenum formats, 0-terminated */
941 enum pipe_format pipeFormats[13]; /**< list of pipe formats, 0-terminated */
942 };
943
944
945 #define DEFAULT_RGBA_FORMATS \
946 PIPE_FORMAT_B8G8R8A8_UNORM, \
947 PIPE_FORMAT_R8G8B8A8_UNORM, \
948 PIPE_FORMAT_A8R8G8B8_UNORM, \
949 PIPE_FORMAT_A8B8G8R8_UNORM, \
950 0
951
952 #define DEFAULT_RGB_FORMATS \
953 PIPE_FORMAT_B8G8R8X8_UNORM, \
954 PIPE_FORMAT_R8G8B8X8_UNORM, \
955 PIPE_FORMAT_X8R8G8B8_UNORM, \
956 PIPE_FORMAT_X8B8G8R8_UNORM, \
957 PIPE_FORMAT_B5G6R5_UNORM, \
958 DEFAULT_RGBA_FORMATS
959
960 #define DEFAULT_SRGBA_FORMATS \
961 PIPE_FORMAT_B8G8R8A8_SRGB, \
962 PIPE_FORMAT_R8G8B8A8_SRGB, \
963 PIPE_FORMAT_A8R8G8B8_SRGB, \
964 PIPE_FORMAT_A8B8G8R8_SRGB, \
965 0
966
967 #define DEFAULT_DEPTH_FORMATS \
968 PIPE_FORMAT_Z24X8_UNORM, \
969 PIPE_FORMAT_X8Z24_UNORM, \
970 PIPE_FORMAT_Z16_UNORM, \
971 PIPE_FORMAT_Z24_UNORM_S8_UINT, \
972 PIPE_FORMAT_S8_UINT_Z24_UNORM, \
973 0
974
975 #define DEFAULT_SNORM8_RGBA_FORMATS \
976 PIPE_FORMAT_R8G8B8A8_SNORM, \
977 0
978
979 #define DEFAULT_UNORM16_RGBA_FORMATS \
980 PIPE_FORMAT_R16G16B16A16_UNORM, \
981 DEFAULT_RGBA_FORMATS
982
983
984 /**
985 * This table maps OpenGL texture format enums to Gallium pipe_format enums.
986 * Multiple GL enums might map to multiple pipe_formats.
987 * The first pipe format in the list that's supported is the one that's chosen.
988 */
989 static const struct format_mapping format_map[] = {
990 /* Basic RGB, RGBA formats */
991 {
992 { GL_RGB10, 0 },
993 { PIPE_FORMAT_B10G10R10X2_UNORM, PIPE_FORMAT_B10G10R10A2_UNORM,
994 PIPE_FORMAT_R10G10B10A2_UNORM, DEFAULT_RGB_FORMATS }
995 },
996 {
997 { GL_RGB10_A2, 0 },
998 { PIPE_FORMAT_B10G10R10A2_UNORM, PIPE_FORMAT_R10G10B10A2_UNORM,
999 DEFAULT_RGBA_FORMATS }
1000 },
1001 {
1002 { 4, GL_RGBA, GL_RGBA8, 0 },
1003 { DEFAULT_RGBA_FORMATS }
1004 },
1005 {
1006 { GL_BGRA, 0 },
1007 { DEFAULT_RGBA_FORMATS }
1008 },
1009 {
1010 { 3, GL_RGB, GL_RGB8, 0 },
1011 { DEFAULT_RGB_FORMATS }
1012 },
1013 {
1014 { GL_RGB12, GL_RGB16, 0 },
1015 { PIPE_FORMAT_R16G16B16X16_UNORM, PIPE_FORMAT_R16G16B16A16_UNORM,
1016 DEFAULT_RGB_FORMATS }
1017 },
1018 {
1019 { GL_RGBA12, GL_RGBA16, 0 },
1020 { PIPE_FORMAT_R16G16B16A16_UNORM, DEFAULT_RGBA_FORMATS }
1021 },
1022 {
1023 { GL_RGBA4, GL_RGBA2, 0 },
1024 { PIPE_FORMAT_B4G4R4A4_UNORM, DEFAULT_RGBA_FORMATS }
1025 },
1026 {
1027 { GL_RGB5_A1, 0 },
1028 { PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGBA_FORMATS }
1029 },
1030 {
1031 { GL_R3_G3_B2, 0 },
1032 { PIPE_FORMAT_B2G3R3_UNORM, PIPE_FORMAT_B5G6R5_UNORM,
1033 PIPE_FORMAT_B5G5R5A1_UNORM, DEFAULT_RGB_FORMATS }
1034 },
1035 {
1036 { GL_RGB4 },
1037 { PIPE_FORMAT_B4G4R4X4_UNORM, PIPE_FORMAT_B4G4R4A4_UNORM,
1038 DEFAULT_RGB_FORMATS }
1039 },
1040 {
1041 { GL_RGB5 },
1042 { PIPE_FORMAT_B5G5R5X1_UNORM, PIPE_FORMAT_B5G5R5A1_UNORM,
1043 DEFAULT_RGB_FORMATS }
1044 },
1045 {
1046 { GL_RGB565 },
1047 { PIPE_FORMAT_B5G6R5_UNORM, DEFAULT_RGB_FORMATS }
1048 },
1049
1050 /* basic Alpha formats */
1051 {
1052 { GL_ALPHA12, GL_ALPHA16, 0 },
1053 { PIPE_FORMAT_A16_UNORM, PIPE_FORMAT_A8_UNORM,
1054 DEFAULT_RGBA_FORMATS }
1055 },
1056 {
1057 { GL_ALPHA, GL_ALPHA4, GL_ALPHA8, GL_COMPRESSED_ALPHA, 0 },
1058 { PIPE_FORMAT_A8_UNORM, DEFAULT_RGBA_FORMATS }
1059 },
1060
1061 /* basic Luminance formats */
1062 {
1063 { GL_LUMINANCE12, GL_LUMINANCE16, 0 },
1064 { PIPE_FORMAT_L16_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
1065 },
1066 {
1067 { 1, GL_LUMINANCE, GL_LUMINANCE4, GL_LUMINANCE8, 0 },
1068 { PIPE_FORMAT_L8_UNORM, DEFAULT_RGB_FORMATS }
1069 },
1070
1071 /* basic Luminance/Alpha formats */
1072 {
1073 { GL_LUMINANCE12_ALPHA4, GL_LUMINANCE12_ALPHA12,
1074 GL_LUMINANCE16_ALPHA16, 0},
1075 { PIPE_FORMAT_L16A16_UNORM, PIPE_FORMAT_L8A8_UNORM,
1076 DEFAULT_RGBA_FORMATS }
1077 },
1078 {
1079 { 2, GL_LUMINANCE_ALPHA, GL_LUMINANCE6_ALPHA2, GL_LUMINANCE8_ALPHA8, 0 },
1080 { PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1081 },
1082 {
1083 { GL_LUMINANCE4_ALPHA4, 0 },
1084 { PIPE_FORMAT_L4A4_UNORM, PIPE_FORMAT_L8A8_UNORM,
1085 DEFAULT_RGBA_FORMATS }
1086 },
1087
1088 /* basic Intensity formats */
1089 {
1090 { GL_INTENSITY12, GL_INTENSITY16, 0 },
1091 { PIPE_FORMAT_I16_UNORM, PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
1092 },
1093 {
1094 { GL_INTENSITY, GL_INTENSITY4, GL_INTENSITY8,
1095 GL_COMPRESSED_INTENSITY, 0 },
1096 { PIPE_FORMAT_I8_UNORM, DEFAULT_RGBA_FORMATS }
1097 },
1098
1099 /* YCbCr */
1100 {
1101 { GL_YCBCR_MESA, 0 },
1102 { PIPE_FORMAT_UYVY, PIPE_FORMAT_YUYV, 0 }
1103 },
1104
1105 /* compressed formats */ /* XXX PIPE_BIND_SAMPLER_VIEW only */
1106 {
1107 { GL_COMPRESSED_RGB, 0 },
1108 { PIPE_FORMAT_DXT1_RGB, DEFAULT_RGB_FORMATS }
1109 },
1110 {
1111 { GL_COMPRESSED_RGBA, 0 },
1112 { PIPE_FORMAT_DXT5_RGBA, DEFAULT_RGBA_FORMATS }
1113 },
1114 {
1115 { GL_RGB_S3TC, GL_RGB4_S3TC, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, 0 },
1116 { PIPE_FORMAT_DXT1_RGB, 0 }
1117 },
1118 {
1119 { GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 0 },
1120 { PIPE_FORMAT_DXT1_RGBA, 0 }
1121 },
1122 {
1123 { GL_RGBA_S3TC, GL_RGBA4_S3TC, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, 0 },
1124 { PIPE_FORMAT_DXT3_RGBA, 0 }
1125 },
1126 {
1127 { GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, 0 },
1128 { PIPE_FORMAT_DXT5_RGBA, 0 }
1129 },
1130
1131 #if 0
1132 {
1133 { GL_COMPRESSED_RGB_FXT1_3DFX, 0 },
1134 { PIPE_FORMAT_RGB_FXT1, 0 }
1135 },
1136 {
1137 { GL_COMPRESSED_RGBA_FXT1_3DFX, 0 },
1138 { PIPE_FORMAT_RGBA_FXT1, 0 }
1139 },
1140 #endif
1141
1142 /* Depth formats */
1143 {
1144 { GL_DEPTH_COMPONENT16, 0 },
1145 { PIPE_FORMAT_Z16_UNORM, DEFAULT_DEPTH_FORMATS }
1146 },
1147 {
1148 { GL_DEPTH_COMPONENT24, 0 },
1149 { PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
1150 DEFAULT_DEPTH_FORMATS }
1151 },
1152 {
1153 { GL_DEPTH_COMPONENT32, 0 },
1154 { PIPE_FORMAT_Z32_UNORM, DEFAULT_DEPTH_FORMATS }
1155 },
1156 {
1157 { GL_DEPTH_COMPONENT, 0 },
1158 { DEFAULT_DEPTH_FORMATS }
1159 },
1160 {
1161 { GL_DEPTH_COMPONENT32F, 0 },
1162 { PIPE_FORMAT_Z32_FLOAT, 0 }
1163 },
1164
1165 /* stencil formats */
1166 {
1167 { GL_STENCIL_INDEX, GL_STENCIL_INDEX1_EXT, GL_STENCIL_INDEX4_EXT,
1168 GL_STENCIL_INDEX8_EXT, GL_STENCIL_INDEX16_EXT, 0 },
1169 {
1170 PIPE_FORMAT_S8_UINT, PIPE_FORMAT_Z24_UNORM_S8_UINT,
1171 PIPE_FORMAT_S8_UINT_Z24_UNORM, 0
1172 }
1173 },
1174
1175 /* Depth / Stencil formats */
1176 {
1177 { GL_DEPTH_STENCIL_EXT, GL_DEPTH24_STENCIL8_EXT, 0 },
1178 { PIPE_FORMAT_Z24_UNORM_S8_UINT, PIPE_FORMAT_S8_UINT_Z24_UNORM, 0 }
1179 },
1180 {
1181 { GL_DEPTH32F_STENCIL8, 0 },
1182 { PIPE_FORMAT_Z32_FLOAT_S8X24_UINT, 0 }
1183 },
1184
1185 /* sRGB formats */
1186 {
1187 { GL_SRGB_EXT, GL_SRGB8_EXT, 0 },
1188 { PIPE_FORMAT_R8G8B8X8_SRGB, PIPE_FORMAT_B8G8R8X8_SRGB,
1189 DEFAULT_SRGBA_FORMATS }
1190 },
1191 {
1192 { GL_SRGB_ALPHA_EXT, GL_SRGB8_ALPHA8_EXT, 0 },
1193 { DEFAULT_SRGBA_FORMATS }
1194 },
1195 {
1196 { GL_COMPRESSED_SRGB_EXT, GL_COMPRESSED_SRGB_S3TC_DXT1_EXT, 0 },
1197 { PIPE_FORMAT_DXT1_SRGB, PIPE_FORMAT_R8G8B8X8_SRGB,
1198 PIPE_FORMAT_B8G8R8X8_SRGB, DEFAULT_SRGBA_FORMATS }
1199 },
1200 {
1201 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT, 0 },
1202 { PIPE_FORMAT_DXT1_SRGBA, 0 }
1203 },
1204 {
1205 { GL_COMPRESSED_SRGB_ALPHA_EXT,
1206 GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT, 0 },
1207 { PIPE_FORMAT_DXT3_SRGBA, DEFAULT_SRGBA_FORMATS }
1208 },
1209 {
1210 { GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT, 0 },
1211 { PIPE_FORMAT_DXT5_SRGBA, 0 }
1212 },
1213 {
1214 { GL_SLUMINANCE_ALPHA_EXT, GL_SLUMINANCE8_ALPHA8_EXT,
1215 GL_COMPRESSED_SLUMINANCE_ALPHA_EXT, 0 },
1216 { PIPE_FORMAT_L8A8_SRGB, DEFAULT_SRGBA_FORMATS }
1217 },
1218 {
1219 { GL_SLUMINANCE_EXT, GL_SLUMINANCE8_EXT, GL_COMPRESSED_SLUMINANCE_EXT,
1220 0 },
1221 { PIPE_FORMAT_L8_SRGB, DEFAULT_SRGBA_FORMATS }
1222 },
1223
1224 /* 16-bit float formats */
1225 {
1226 { GL_RGBA16F_ARB, 0 },
1227 { PIPE_FORMAT_R16G16B16A16_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1228 },
1229 {
1230 { GL_RGB16F_ARB, 0 },
1231 { PIPE_FORMAT_R16G16B16_FLOAT, PIPE_FORMAT_R16G16B16X16_FLOAT,
1232 PIPE_FORMAT_R16G16B16A16_FLOAT,
1233 PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1234 },
1235 {
1236 { GL_LUMINANCE_ALPHA16F_ARB, 0 },
1237 { PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1238 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1239 },
1240 {
1241 { GL_ALPHA16F_ARB, 0 },
1242 { PIPE_FORMAT_A16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1243 PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1244 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1245 },
1246 {
1247 { GL_INTENSITY16F_ARB, 0 },
1248 { PIPE_FORMAT_I16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1249 PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1250 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1251 },
1252 {
1253 { GL_LUMINANCE16F_ARB, 0 },
1254 { PIPE_FORMAT_L16_FLOAT, PIPE_FORMAT_L16A16_FLOAT,
1255 PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1256 PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1257 },
1258 {
1259 { GL_R16F, 0 },
1260 { PIPE_FORMAT_R16_FLOAT, PIPE_FORMAT_R16G16_FLOAT,
1261 PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1262 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1263 },
1264 {
1265 { GL_RG16F, 0 },
1266 { PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT,
1267 PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT, 0 }
1268 },
1269
1270 /* 32-bit float formats */
1271 {
1272 { GL_RGBA32F_ARB, 0 },
1273 { PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1274 },
1275 {
1276 { GL_RGB32F_ARB, 0 },
1277 { PIPE_FORMAT_R32G32B32_FLOAT, PIPE_FORMAT_R32G32B32X32_FLOAT,
1278 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1279 },
1280 {
1281 { GL_LUMINANCE_ALPHA32F_ARB, 0 },
1282 { PIPE_FORMAT_L32A32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1283 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1284 },
1285 {
1286 { GL_ALPHA32F_ARB, 0 },
1287 { PIPE_FORMAT_A32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1288 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_A16_FLOAT,
1289 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1290 },
1291 {
1292 { GL_INTENSITY32F_ARB, 0 },
1293 { PIPE_FORMAT_I32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1294 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_I16_FLOAT,
1295 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1296 },
1297 {
1298 { GL_LUMINANCE32F_ARB, 0 },
1299 { PIPE_FORMAT_L32_FLOAT, PIPE_FORMAT_L32A32_FLOAT,
1300 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_L16_FLOAT,
1301 PIPE_FORMAT_L16A16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1302 },
1303 {
1304 { GL_R32F, 0 },
1305 { PIPE_FORMAT_R32_FLOAT, PIPE_FORMAT_R32G32_FLOAT,
1306 PIPE_FORMAT_R32G32B32A32_FLOAT, PIPE_FORMAT_R16_FLOAT,
1307 PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1308 },
1309 {
1310 { GL_RG32F, 0 },
1311 { PIPE_FORMAT_R32G32_FLOAT, PIPE_FORMAT_R32G32B32A32_FLOAT,
1312 PIPE_FORMAT_R16G16_FLOAT, PIPE_FORMAT_R16G16B16A16_FLOAT, 0 }
1313 },
1314
1315 /* R, RG formats */
1316 {
1317 { GL_RED, GL_R8, 0 },
1318 { PIPE_FORMAT_R8_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1319 },
1320 {
1321 { GL_RG, GL_RG8, 0 },
1322 { PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1323 },
1324 {
1325 { GL_R16, 0 },
1326 { PIPE_FORMAT_R16_UNORM, PIPE_FORMAT_R16G16_UNORM,
1327 DEFAULT_UNORM16_RGBA_FORMATS }
1328 },
1329 {
1330 { GL_RG16, 0 },
1331 { PIPE_FORMAT_R16G16_UNORM, DEFAULT_UNORM16_RGBA_FORMATS }
1332 },
1333
1334 /* compressed R, RG formats */
1335 {
1336 { GL_COMPRESSED_RED, GL_COMPRESSED_RED_RGTC1, 0 },
1337 { PIPE_FORMAT_RGTC1_UNORM, PIPE_FORMAT_R8_UNORM, DEFAULT_RGBA_FORMATS }
1338 },
1339 {
1340 { GL_COMPRESSED_SIGNED_RED_RGTC1, 0 },
1341 { PIPE_FORMAT_RGTC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1342 },
1343 {
1344 { GL_COMPRESSED_RG, GL_COMPRESSED_RG_RGTC2, 0 },
1345 { PIPE_FORMAT_RGTC2_UNORM, PIPE_FORMAT_R8G8_UNORM, DEFAULT_RGBA_FORMATS }
1346 },
1347 {
1348 { GL_COMPRESSED_SIGNED_RG_RGTC2, 0 },
1349 { PIPE_FORMAT_RGTC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1350 },
1351 {
1352 { GL_COMPRESSED_LUMINANCE, GL_COMPRESSED_LUMINANCE_LATC1_EXT, 0 },
1353 { PIPE_FORMAT_LATC1_UNORM, PIPE_FORMAT_L8_UNORM, DEFAULT_RGBA_FORMATS }
1354 },
1355 {
1356 { GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT, 0 },
1357 { PIPE_FORMAT_LATC1_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1358 },
1359 {
1360 { GL_COMPRESSED_LUMINANCE_ALPHA, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT,
1361 GL_COMPRESSED_LUMINANCE_ALPHA_3DC_ATI, 0 },
1362 { PIPE_FORMAT_LATC2_UNORM, PIPE_FORMAT_L8A8_UNORM, DEFAULT_RGBA_FORMATS }
1363 },
1364 {
1365 { GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT, 0 },
1366 { PIPE_FORMAT_LATC2_SNORM, DEFAULT_SNORM8_RGBA_FORMATS }
1367 },
1368
1369 /* ETC1 */
1370 {
1371 { GL_ETC1_RGB8_OES, 0 },
1372 { PIPE_FORMAT_ETC1_RGB8, 0 }
1373 },
1374
1375 /* BPTC */
1376 {
1377 { GL_COMPRESSED_RGBA_BPTC_UNORM, 0 },
1378 { PIPE_FORMAT_BPTC_RGBA_UNORM, 0 },
1379 },
1380 {
1381 { GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM, 0 },
1382 { PIPE_FORMAT_BPTC_SRGBA, 0 },
1383 },
1384 {
1385 { GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT, 0 },
1386 { PIPE_FORMAT_BPTC_RGB_FLOAT, 0 },
1387 },
1388 {
1389 { GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT, 0 },
1390 { PIPE_FORMAT_BPTC_RGB_UFLOAT, 0 },
1391 },
1392
1393 /* signed/unsigned integer formats.
1394 */
1395 {
1396 { GL_RGBA_INTEGER_EXT,
1397 GL_BGRA_INTEGER_EXT,
1398 GL_RGBA8I_EXT, 0 },
1399 { PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1400 },
1401 {
1402 { GL_RGB_INTEGER_EXT,
1403 GL_BGR_INTEGER_EXT,
1404 GL_RGB8I_EXT,
1405 GL_BLUE_INTEGER_EXT, 0 },
1406 { PIPE_FORMAT_R8G8B8_SINT, PIPE_FORMAT_R8G8B8X8_SINT,
1407 PIPE_FORMAT_R8G8B8A8_SINT, 0 }
1408 },
1409 {
1410 { GL_ALPHA_INTEGER_EXT,
1411 GL_ALPHA8I_EXT, 0 },
1412 { PIPE_FORMAT_A8_SINT, 0 }
1413 },
1414 {
1415 { GL_ALPHA16I_EXT, 0 },
1416 { PIPE_FORMAT_A16_SINT, 0 }
1417 },
1418 {
1419 { GL_ALPHA32I_EXT, 0 },
1420 { PIPE_FORMAT_A32_SINT, 0 }
1421 },
1422 {
1423 { GL_ALPHA8UI_EXT, 0 },
1424 { PIPE_FORMAT_A8_UINT, 0 }
1425 },
1426 {
1427 { GL_ALPHA16UI_EXT, 0 },
1428 { PIPE_FORMAT_A16_UINT, 0 }
1429 },
1430 {
1431 { GL_ALPHA32UI_EXT, 0 },
1432 { PIPE_FORMAT_A32_UINT, 0 }
1433 },
1434 {
1435 { GL_INTENSITY8I_EXT, 0 },
1436 { PIPE_FORMAT_I8_SINT, 0 }
1437 },
1438 {
1439 { GL_INTENSITY16I_EXT, 0 },
1440 { PIPE_FORMAT_I16_SINT, 0 }
1441 },
1442 {
1443 { GL_INTENSITY32I_EXT, 0 },
1444 { PIPE_FORMAT_I32_SINT, 0 }
1445 },
1446 {
1447 { GL_INTENSITY8UI_EXT, 0 },
1448 { PIPE_FORMAT_I8_UINT, 0 }
1449 },
1450 {
1451 { GL_INTENSITY16UI_EXT, 0 },
1452 { PIPE_FORMAT_I16_UINT, 0 }
1453 },
1454 {
1455 { GL_INTENSITY32UI_EXT, 0 },
1456 { PIPE_FORMAT_I32_UINT, 0 }
1457 },
1458 {
1459 { GL_LUMINANCE8I_EXT, 0 },
1460 { PIPE_FORMAT_L8_SINT, 0 }
1461 },
1462 {
1463 { GL_LUMINANCE16I_EXT, 0 },
1464 { PIPE_FORMAT_L16_SINT, 0 }
1465 },
1466 {
1467 { GL_LUMINANCE32I_EXT, 0 },
1468 { PIPE_FORMAT_L32_SINT, 0 }
1469 },
1470 {
1471 { GL_LUMINANCE_INTEGER_EXT,
1472 GL_LUMINANCE8UI_EXT, 0 },
1473 { PIPE_FORMAT_L8_UINT, 0 }
1474 },
1475 {
1476 { GL_LUMINANCE16UI_EXT, 0 },
1477 { PIPE_FORMAT_L16_UINT, 0 }
1478 },
1479 {
1480 { GL_LUMINANCE32UI_EXT, 0 },
1481 { PIPE_FORMAT_L32_UINT, 0 }
1482 },
1483 {
1484 { GL_LUMINANCE_ALPHA_INTEGER_EXT,
1485 GL_LUMINANCE_ALPHA8I_EXT, 0 },
1486 { PIPE_FORMAT_L8A8_SINT, 0 }
1487 },
1488 {
1489 { GL_LUMINANCE_ALPHA16I_EXT, 0 },
1490 { PIPE_FORMAT_L16A16_SINT, 0 }
1491 },
1492 {
1493 { GL_LUMINANCE_ALPHA32I_EXT, 0 },
1494 { PIPE_FORMAT_L32A32_SINT, 0 }
1495 },
1496 {
1497 { GL_LUMINANCE_ALPHA8UI_EXT, 0 },
1498 { PIPE_FORMAT_L8A8_UINT, 0 }
1499 },
1500 {
1501 { GL_LUMINANCE_ALPHA16UI_EXT, 0 },
1502 { PIPE_FORMAT_L16A16_UINT, 0 }
1503 },
1504 {
1505 { GL_LUMINANCE_ALPHA32UI_EXT, 0 },
1506 { PIPE_FORMAT_L32A32_UINT, 0 }
1507 },
1508 {
1509 { GL_RGB16I_EXT, 0 },
1510 { PIPE_FORMAT_R16G16B16_SINT, PIPE_FORMAT_R16G16B16X16_SINT,
1511 PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1512 },
1513 {
1514 { GL_RGBA16I_EXT, 0 },
1515 { PIPE_FORMAT_R16G16B16A16_SINT, 0 },
1516 },
1517 {
1518 { GL_RGB32I_EXT, 0 },
1519 { PIPE_FORMAT_R32G32B32_SINT, PIPE_FORMAT_R32G32B32X32_SINT,
1520 PIPE_FORMAT_R32G32B32A32_SINT, 0 },
1521 },
1522 {
1523 { GL_RGBA32I_EXT, 0 },
1524 { PIPE_FORMAT_R32G32B32A32_SINT, 0 }
1525 },
1526 {
1527 { GL_RGBA8UI_EXT, 0 },
1528 { PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1529 },
1530 {
1531 { GL_RGB8UI_EXT, 0 },
1532 { PIPE_FORMAT_R8G8B8_UINT, PIPE_FORMAT_R8G8B8X8_UINT,
1533 PIPE_FORMAT_R8G8B8A8_UINT, 0 }
1534 },
1535 {
1536 { GL_RGB16UI_EXT, 0 },
1537 { PIPE_FORMAT_R16G16B16_UINT, PIPE_FORMAT_R16G16B16X16_UINT,
1538 PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1539 },
1540 {
1541 { GL_RGBA16UI_EXT, 0 },
1542 { PIPE_FORMAT_R16G16B16A16_UINT, 0 }
1543 },
1544 {
1545 { GL_RGB32UI_EXT, 0},
1546 { PIPE_FORMAT_R32G32B32_UINT, PIPE_FORMAT_R32G32B32X32_UINT,
1547 PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1548 },
1549 {
1550 { GL_RGBA32UI_EXT, 0},
1551 { PIPE_FORMAT_R32G32B32A32_UINT, 0 }
1552 },
1553 {
1554 { GL_R8I, GL_RED_INTEGER_EXT, 0},
1555 { PIPE_FORMAT_R8_SINT, 0},
1556 },
1557 {
1558 { GL_R16I, 0},
1559 { PIPE_FORMAT_R16_SINT, 0},
1560 },
1561 {
1562 { GL_R32I, 0},
1563 { PIPE_FORMAT_R32_SINT, 0},
1564 },
1565 {
1566 { GL_R8UI, 0},
1567 { PIPE_FORMAT_R8_UINT, 0},
1568 },
1569 {
1570 { GL_R16UI, 0},
1571 { PIPE_FORMAT_R16_UINT, 0},
1572 },
1573 {
1574 { GL_R32UI, 0},
1575 { PIPE_FORMAT_R32_UINT, 0},
1576 },
1577 {
1578 { GL_RG8I, GL_GREEN_INTEGER_EXT, 0},
1579 { PIPE_FORMAT_R8G8_SINT, 0},
1580 },
1581 {
1582 { GL_RG16I, 0},
1583 { PIPE_FORMAT_R16G16_SINT, 0},
1584 },
1585 {
1586 { GL_RG32I, 0},
1587 { PIPE_FORMAT_R32G32_SINT, 0},
1588 },
1589 {
1590 { GL_RG8UI, 0},
1591 { PIPE_FORMAT_R8G8_UINT, 0},
1592 },
1593 {
1594 { GL_RG16UI, 0},
1595 { PIPE_FORMAT_R16G16_UINT, 0},
1596 },
1597 {
1598 { GL_RG32UI, 0},
1599 { PIPE_FORMAT_R32G32_UINT, 0},
1600 },
1601 /* signed normalized formats */
1602 {
1603 { GL_RED_SNORM, GL_R8_SNORM, 0 },
1604 { PIPE_FORMAT_R8_SNORM, PIPE_FORMAT_R8G8_SNORM,
1605 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1606 },
1607 {
1608 { GL_R16_SNORM, 0 },
1609 { PIPE_FORMAT_R16_SNORM,
1610 PIPE_FORMAT_R16G16_SNORM,
1611 PIPE_FORMAT_R16G16B16A16_SNORM,
1612 PIPE_FORMAT_R8_SNORM,
1613 PIPE_FORMAT_R8G8_SNORM,
1614 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1615 },
1616 {
1617 { GL_RG_SNORM, GL_RG8_SNORM, 0 },
1618 { PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1619 },
1620 {
1621 { GL_RG16_SNORM, 0 },
1622 { PIPE_FORMAT_R16G16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1623 PIPE_FORMAT_R8G8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1624 },
1625 {
1626 { GL_RGB_SNORM, GL_RGB8_SNORM, 0 },
1627 { PIPE_FORMAT_R8G8B8X8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1628 },
1629 {
1630 { GL_RGBA_SNORM, GL_RGBA8_SNORM, 0 },
1631 { PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1632 },
1633 {
1634 { GL_RGB16_SNORM, 0 },
1635 { PIPE_FORMAT_R16G16B16X16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1636 PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1637 },
1638 {
1639 { GL_RGBA16_SNORM, 0 },
1640 { PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1641 },
1642 {
1643 { GL_ALPHA_SNORM, GL_ALPHA8_SNORM, 0 },
1644 { PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1645 },
1646 {
1647 { GL_ALPHA16_SNORM, 0 },
1648 { PIPE_FORMAT_A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1649 PIPE_FORMAT_A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1650 },
1651 {
1652 { GL_LUMINANCE_SNORM, GL_LUMINANCE8_SNORM, 0 },
1653 { PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1654 },
1655 {
1656 { GL_LUMINANCE16_SNORM, 0 },
1657 { PIPE_FORMAT_L16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1658 PIPE_FORMAT_L8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1659 },
1660 {
1661 { GL_LUMINANCE_ALPHA_SNORM, GL_LUMINANCE8_ALPHA8_SNORM, 0 },
1662 { PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1663 },
1664 {
1665 { GL_LUMINANCE16_ALPHA16_SNORM, 0 },
1666 { PIPE_FORMAT_L16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1667 PIPE_FORMAT_L8A8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1668 },
1669 {
1670 { GL_INTENSITY_SNORM, GL_INTENSITY8_SNORM, 0 },
1671 { PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1672 },
1673 {
1674 { GL_INTENSITY16_SNORM, 0 },
1675 { PIPE_FORMAT_I16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM,
1676 PIPE_FORMAT_I8_SNORM, PIPE_FORMAT_R8G8B8A8_SNORM, 0 }
1677 },
1678 {
1679 { GL_RGB9_E5, 0 },
1680 { PIPE_FORMAT_R9G9B9E5_FLOAT, 0 }
1681 },
1682 {
1683 { GL_R11F_G11F_B10F, 0 },
1684 { PIPE_FORMAT_R11G11B10_FLOAT, 0 }
1685 },
1686 {
1687 { GL_RGB10_A2UI, 0 },
1688 { PIPE_FORMAT_R10G10B10A2_UINT, PIPE_FORMAT_B10G10R10A2_UINT, 0 }
1689 },
1690 };
1691
1692
1693 /**
1694 * Return first supported format from the given list.
1695 * \param allow_dxt indicates whether it's OK to return a DXT format.
1696 */
1697 static enum pipe_format
1698 find_supported_format(struct pipe_screen *screen,
1699 const enum pipe_format formats[],
1700 enum pipe_texture_target target,
1701 unsigned sample_count,
1702 unsigned tex_usage,
1703 boolean allow_dxt)
1704 {
1705 uint i;
1706 for (i = 0; formats[i]; i++) {
1707 if (screen->is_format_supported(screen, formats[i], target,
1708 sample_count, tex_usage)) {
1709 if (!allow_dxt && util_format_is_s3tc(formats[i])) {
1710 /* we can't return a dxt format, continue searching */
1711 continue;
1712 }
1713
1714 return formats[i];
1715 }
1716 }
1717 return PIPE_FORMAT_NONE;
1718 }
1719
1720 struct exact_format_mapping
1721 {
1722 GLenum format;
1723 GLenum type;
1724 enum pipe_format pformat;
1725 };
1726
1727 static const struct exact_format_mapping rgba8888_tbl[] =
1728 {
1729 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_ABGR8888_UNORM },
1730 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_ABGR8888_UNORM },
1731 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_RGBA8888_UNORM },
1732 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_RGBA8888_UNORM },
1733 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_ARGB8888_UNORM },
1734 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_BGRA8888_UNORM },
1735 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8A8_UNORM },
1736 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_A8B8G8R8_UNORM },
1737 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8A8_UNORM },
1738 { 0, 0, 0 }
1739 };
1740
1741 static const struct exact_format_mapping rgbx8888_tbl[] =
1742 {
1743 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_XBGR8888_UNORM },
1744 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_XBGR8888_UNORM },
1745 { GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_RGBX8888_UNORM },
1746 { GL_ABGR_EXT, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_RGBX8888_UNORM },
1747 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, PIPE_FORMAT_XRGB8888_UNORM },
1748 { GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, PIPE_FORMAT_BGRX8888_UNORM },
1749 { GL_RGBA, GL_UNSIGNED_BYTE, PIPE_FORMAT_R8G8B8X8_UNORM },
1750 { GL_ABGR_EXT, GL_UNSIGNED_BYTE, PIPE_FORMAT_X8B8G8R8_UNORM },
1751 { GL_BGRA, GL_UNSIGNED_BYTE, PIPE_FORMAT_B8G8R8X8_UNORM },
1752 { 0, 0, 0 }
1753 };
1754
1755 static const struct exact_format_mapping rgba1010102_tbl[] =
1756 {
1757 { GL_BGRA, GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_B10G10R10A2_UNORM },
1758 /* No Mesa formats for these Gallium formats:
1759 { GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, PIPE_FORMAT_R10G10B10A2_UNORM },
1760 { GL_ABGR_EXT, GL_UNSIGNED_INT_10_10_10_2, PIPE_FORMAT_R10G10B10A2_UNORM },
1761 { GL_ABGR_EXT, GL_UNSIGNED_INT, PIPE_FORMAT_R10G10B10A2_UNORM },
1762 */
1763 { 0, 0, 0 }
1764 };
1765
1766 /**
1767 * If there is an exact pipe_format match for {internalFormat, format, type}
1768 * return that, otherwise return PIPE_FORMAT_NONE so we can do fuzzy matching.
1769 */
1770 static enum pipe_format
1771 find_exact_format(GLint internalFormat, GLenum format, GLenum type)
1772 {
1773 uint i;
1774 const struct exact_format_mapping* tbl;
1775
1776 if (format == GL_NONE || type == GL_NONE)
1777 return PIPE_FORMAT_NONE;
1778
1779 switch (internalFormat) {
1780 case 4:
1781 case GL_RGBA:
1782 case GL_RGBA8:
1783 tbl = rgba8888_tbl;
1784 break;
1785 case 3:
1786 case GL_RGB:
1787 case GL_RGB8:
1788 tbl = rgbx8888_tbl;
1789 break;
1790 case GL_RGB10_A2:
1791 tbl = rgba1010102_tbl;
1792 break;
1793 default:
1794 return PIPE_FORMAT_NONE;
1795 }
1796
1797 for (i = 0; tbl[i].format; i++)
1798 if (tbl[i].format == format && tbl[i].type == type)
1799 return tbl[i].pformat;
1800
1801 return PIPE_FORMAT_NONE;
1802 }
1803
1804 /**
1805 * Given an OpenGL internalFormat value for a texture or surface, return
1806 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
1807 * This is called during glTexImage2D, for example.
1808 *
1809 * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
1810 * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
1811 * we want render-to-texture ability.
1812 *
1813 * \param internalFormat the user value passed to glTexImage2D
1814 * \param target one of PIPE_TEXTURE_x
1815 * \param bindings bitmask of PIPE_BIND_x flags.
1816 * \param allow_dxt indicates whether it's OK to return a DXT format. This
1817 * only matters when internalFormat names a generic or
1818 * specific compressed format. And that should only happen
1819 * when we're getting called from gl[Copy]TexImage().
1820 */
1821 enum pipe_format
1822 st_choose_format(struct st_context *st, GLenum internalFormat,
1823 GLenum format, GLenum type,
1824 enum pipe_texture_target target, unsigned sample_count,
1825 unsigned bindings, boolean allow_dxt)
1826 {
1827 struct pipe_screen *screen = st->pipe->screen;
1828 unsigned i;
1829 int j;
1830 enum pipe_format pf;
1831
1832 #ifdef DEBUG
1833 {
1834 static boolean firstCall = TRUE;
1835 if (firstCall) {
1836 test_format_conversion(st);
1837 firstCall = FALSE;
1838 }
1839 }
1840 #else
1841 (void) test_format_conversion;
1842 #endif
1843
1844 /* can't render to compressed formats at this time */
1845 if (_mesa_is_compressed_format(st->ctx, internalFormat)
1846 && (bindings & ~PIPE_BIND_SAMPLER_VIEW)) {
1847 return PIPE_FORMAT_NONE;
1848 }
1849
1850 /* search for exact matches */
1851 pf = find_exact_format(internalFormat, format, type);
1852 if (pf != PIPE_FORMAT_NONE &&
1853 screen->is_format_supported(screen, pf,
1854 target, sample_count, bindings))
1855 return pf;
1856
1857 /* search table for internalFormat */
1858 for (i = 0; i < ARRAY_SIZE(format_map); i++) {
1859 const struct format_mapping *mapping = &format_map[i];
1860 for (j = 0; mapping->glFormats[j]; j++) {
1861 if (mapping->glFormats[j] == internalFormat) {
1862 /* Found the desired internal format. Find first pipe format
1863 * which is supported by the driver.
1864 */
1865 return find_supported_format(screen, mapping->pipeFormats,
1866 target, sample_count, bindings,
1867 allow_dxt);
1868 }
1869 }
1870 }
1871
1872 _mesa_problem(NULL, "unhandled format!\n");
1873 return PIPE_FORMAT_NONE;
1874 }
1875
1876
1877 /**
1878 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
1879 */
1880 enum pipe_format
1881 st_choose_renderbuffer_format(struct st_context *st,
1882 GLenum internalFormat, unsigned sample_count)
1883 {
1884 uint usage;
1885 if (_mesa_is_depth_or_stencil_format(internalFormat))
1886 usage = PIPE_BIND_DEPTH_STENCIL;
1887 else
1888 usage = PIPE_BIND_RENDER_TARGET;
1889 return st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
1890 PIPE_TEXTURE_2D, sample_count, usage, FALSE);
1891 }
1892
1893
1894 /**
1895 * Given an OpenGL user-requested format and type, and swapBytes state,
1896 * return the format which exactly matches those parameters, so that
1897 * a memcpy-based transfer can be done.
1898 *
1899 * If no format is supported, return PIPE_FORMAT_NONE.
1900 */
1901 enum pipe_format
1902 st_choose_matching_format(struct st_context *st, unsigned bind,
1903 GLenum format, GLenum type, GLboolean swapBytes)
1904 {
1905 struct pipe_screen *screen = st->pipe->screen;
1906 mesa_format mesa_format;
1907
1908 for (mesa_format = 1; mesa_format < MESA_FORMAT_COUNT; mesa_format++) {
1909 if (_mesa_get_format_color_encoding(mesa_format) == GL_SRGB) {
1910 continue;
1911 }
1912 if (_mesa_get_format_bits(mesa_format, GL_TEXTURE_INTENSITY_SIZE) > 0) {
1913 /* If `format` is GL_RED/GL_RED_INTEGER, then we might match some
1914 * intensity formats, which we don't want.
1915 */
1916 continue;
1917 }
1918
1919 if (_mesa_format_matches_format_and_type(mesa_format, format, type,
1920 swapBytes, NULL)) {
1921 enum pipe_format format =
1922 st_mesa_format_to_pipe_format(st, mesa_format);
1923
1924 if (format &&
1925 screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0,
1926 bind)) {
1927 return format;
1928 }
1929 /* It's unlikely to find 2 matching Mesa formats. */
1930 break;
1931 }
1932 }
1933 return PIPE_FORMAT_NONE;
1934 }
1935
1936
1937 /**
1938 * Called via ctx->Driver.ChooseTextureFormat().
1939 */
1940 mesa_format
1941 st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
1942 GLint internalFormat,
1943 GLenum format, GLenum type)
1944 {
1945 struct st_context *st = st_context(ctx);
1946 enum pipe_format pFormat;
1947 unsigned bindings;
1948 enum pipe_texture_target pTarget = gl_target_to_pipe(target);
1949
1950 if (target == GL_TEXTURE_1D || target == GL_TEXTURE_1D_ARRAY) {
1951 /* We don't do compression for these texture targets because of
1952 * difficulty with sub-texture updates on non-block boundaries, etc.
1953 * So change the internal format request to an uncompressed format.
1954 */
1955 internalFormat =
1956 _mesa_generic_compressed_format_to_uncompressed_format(internalFormat);
1957 }
1958
1959 /* GL textures may wind up being render targets, but we don't know
1960 * that in advance. Specify potential render target flags now for formats
1961 * that we know should always be renderable.
1962 */
1963 bindings = PIPE_BIND_SAMPLER_VIEW;
1964 if (_mesa_is_depth_or_stencil_format(internalFormat))
1965 bindings |= PIPE_BIND_DEPTH_STENCIL;
1966 else if (internalFormat == 3 || internalFormat == 4 ||
1967 internalFormat == GL_RGB || internalFormat == GL_RGBA ||
1968 internalFormat == GL_RGB8 || internalFormat == GL_RGBA8 ||
1969 internalFormat == GL_BGRA)
1970 bindings |= PIPE_BIND_RENDER_TARGET;
1971
1972 /* GLES allows the driver to choose any format which matches
1973 * the format+type combo, because GLES only supports unsized internal
1974 * formats and expects the driver to choose whatever suits it.
1975 */
1976 if (_mesa_is_gles(ctx)) {
1977 GLenum baseFormat = _mesa_base_tex_format(ctx, internalFormat);
1978 GLenum basePackFormat = _mesa_base_pack_format(format);
1979 GLenum iformat = internalFormat;
1980
1981 /* Treat GL_BGRA as GL_RGBA. */
1982 if (iformat == GL_BGRA)
1983 iformat = GL_RGBA;
1984
1985 /* Check if the internalformat is unsized and compatible
1986 * with the "format".
1987 */
1988 if (iformat == baseFormat && iformat == basePackFormat) {
1989 pFormat = st_choose_matching_format(st, bindings, format, type,
1990 ctx->Unpack.SwapBytes);
1991
1992 if (pFormat != PIPE_FORMAT_NONE)
1993 return st_pipe_format_to_mesa_format(pFormat);
1994
1995 /* try choosing format again, this time without render target bindings */
1996 pFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
1997 format, type,
1998 ctx->Unpack.SwapBytes);
1999 if (pFormat != PIPE_FORMAT_NONE)
2000 return st_pipe_format_to_mesa_format(pFormat);
2001 }
2002 }
2003
2004 pFormat = st_choose_format(st, internalFormat, format, type,
2005 pTarget, 0, bindings, ctx->Mesa_DXTn);
2006
2007 if (pFormat == PIPE_FORMAT_NONE) {
2008 /* try choosing format again, this time without render target bindings */
2009 pFormat = st_choose_format(st, internalFormat, format, type,
2010 pTarget, 0, PIPE_BIND_SAMPLER_VIEW,
2011 ctx->Mesa_DXTn);
2012 }
2013
2014 if (pFormat == PIPE_FORMAT_NONE) {
2015 /* no luck at all */
2016 return MESA_FORMAT_NONE;
2017 }
2018
2019 return st_pipe_format_to_mesa_format(pFormat);
2020 }
2021
2022
2023 /**
2024 * Called via ctx->Driver.ChooseTextureFormat().
2025 */
2026 size_t
2027 st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target,
2028 GLenum internalFormat, int samples[16])
2029 {
2030 struct st_context *st = st_context(ctx);
2031 enum pipe_format format;
2032 unsigned i, bind, num_sample_counts = 0;
2033
2034 (void) target;
2035
2036 if (_mesa_is_depth_or_stencil_format(internalFormat))
2037 bind = PIPE_BIND_DEPTH_STENCIL;
2038 else
2039 bind = PIPE_BIND_RENDER_TARGET;
2040
2041 /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
2042 * formats.
2043 */
2044 if (!ctx->Extensions.EXT_framebuffer_sRGB) {
2045 internalFormat = _mesa_get_linear_internalformat(internalFormat);
2046 }
2047
2048 /* Set sample counts in descending order. */
2049 for (i = 16; i > 1; i--) {
2050 format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
2051 PIPE_TEXTURE_2D, i, bind, FALSE);
2052
2053 if (format != PIPE_FORMAT_NONE) {
2054 samples[num_sample_counts++] = i;
2055 }
2056 }
2057
2058 if (!num_sample_counts) {
2059 samples[num_sample_counts++] = 1;
2060 }
2061
2062 return num_sample_counts;
2063 }
2064
2065
2066 /**
2067 * This is used for translating texture border color and the clear
2068 * color. For example, the clear color is interpreted according to
2069 * the renderbuffer's base format. For example, if clearing a
2070 * GL_LUMINANCE buffer, we'll return colorOut[0] = colorOut[1] =
2071 * colorOut[2] = colorIn[0].
2072 * Similarly for texture border colors.
2073 */
2074 void
2075 st_translate_color(const union gl_color_union *colorIn,
2076 union pipe_color_union *colorOut,
2077 GLenum baseFormat, GLboolean is_integer)
2078 {
2079 if (is_integer) {
2080 const int *in = colorIn->i;
2081 int *out = colorOut->i;
2082
2083 switch (baseFormat) {
2084 case GL_RED:
2085 out[0] = in[0];
2086 out[1] = 0;
2087 out[2] = 0;
2088 out[3] = 1;
2089 break;
2090 case GL_RG:
2091 out[0] = in[0];
2092 out[1] = in[1];
2093 out[2] = 0;
2094 out[3] = 1;
2095 break;
2096 case GL_RGB:
2097 out[0] = in[0];
2098 out[1] = in[1];
2099 out[2] = in[2];
2100 out[3] = 1;
2101 break;
2102 case GL_ALPHA:
2103 out[0] = out[1] = out[2] = 0;
2104 out[3] = in[3];
2105 break;
2106 case GL_LUMINANCE:
2107 out[0] = out[1] = out[2] = in[0];
2108 out[3] = 1;
2109 break;
2110 case GL_LUMINANCE_ALPHA:
2111 out[0] = out[1] = out[2] = in[0];
2112 out[3] = in[3];
2113 break;
2114 case GL_INTENSITY:
2115 out[0] = out[1] = out[2] = out[3] = in[0];
2116 break;
2117 default:
2118 COPY_4V(out, in);
2119 }
2120 }
2121 else {
2122 const float *in = colorIn->f;
2123 float *out = colorOut->f;
2124
2125 switch (baseFormat) {
2126 case GL_RED:
2127 out[0] = in[0];
2128 out[1] = 0.0F;
2129 out[2] = 0.0F;
2130 out[3] = 1.0F;
2131 break;
2132 case GL_RG:
2133 out[0] = in[0];
2134 out[1] = in[1];
2135 out[2] = 0.0F;
2136 out[3] = 1.0F;
2137 break;
2138 case GL_RGB:
2139 out[0] = in[0];
2140 out[1] = in[1];
2141 out[2] = in[2];
2142 out[3] = 1.0F;
2143 break;
2144 case GL_ALPHA:
2145 out[0] = out[1] = out[2] = 0.0F;
2146 out[3] = in[3];
2147 break;
2148 case GL_LUMINANCE:
2149 out[0] = out[1] = out[2] = in[0];
2150 out[3] = 1.0F;
2151 break;
2152 case GL_LUMINANCE_ALPHA:
2153 out[0] = out[1] = out[2] = in[0];
2154 out[3] = in[3];
2155 break;
2156 case GL_INTENSITY:
2157 out[0] = out[1] = out[2] = out[3] = in[0];
2158 break;
2159 default:
2160 COPY_4V(out, in);
2161 }
2162 }
2163 }