1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * Copyright (c) 2008-2010 VMware, Inc.
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:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
31 * Mesa / Gallium format conversion and format selection code.
35 #include "main/imports.h"
36 #include "main/context.h"
37 #include "main/texstore.h"
38 #include "main/enums.h"
39 #include "main/macros.h"
41 #include "pipe/p_context.h"
42 #include "pipe/p_defines.h"
43 #include "pipe/p_screen.h"
44 #include "util/u_format.h"
45 #include "st_context.h"
46 #include "st_format.h"
50 format_max_bits(enum pipe_format format
)
52 GLuint size
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 0);
54 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 1));
55 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 2));
56 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 3));
57 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0));
58 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1));
64 * Return basic GL datatype for the given gallium format.
67 st_format_datatype(enum pipe_format format
)
69 const struct util_format_description
*desc
;
71 desc
= util_format_description(format
);
74 if (desc
->layout
== UTIL_FORMAT_LAYOUT_PLAIN
) {
75 if (format
== PIPE_FORMAT_B5G5R5A1_UNORM
||
76 format
== PIPE_FORMAT_B5G6R5_UNORM
) {
77 return GL_UNSIGNED_SHORT
;
79 else if (format
== PIPE_FORMAT_Z24_UNORM_S8_USCALED
||
80 format
== PIPE_FORMAT_S8_USCALED_Z24_UNORM
) {
81 return GL_UNSIGNED_INT_24_8
;
84 const GLuint size
= format_max_bits(format
);
86 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
87 return GL_UNSIGNED_BYTE
;
91 else if (size
== 16) {
92 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
93 return GL_UNSIGNED_SHORT
;
99 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
100 return GL_UNSIGNED_INT
;
106 else if (format
== PIPE_FORMAT_UYVY
) {
107 return GL_UNSIGNED_SHORT
;
109 else if (format
== PIPE_FORMAT_YUYV
) {
110 return GL_UNSIGNED_SHORT
;
113 /* compressed format? */
123 * Translate Mesa format to Gallium format.
126 st_mesa_format_to_pipe_format(gl_format mesaFormat
)
128 switch (mesaFormat
) {
129 case MESA_FORMAT_RGBA8888
:
130 return PIPE_FORMAT_A8B8G8R8_UNORM
;
131 case MESA_FORMAT_RGBA8888_REV
:
132 return PIPE_FORMAT_R8G8B8A8_UNORM
;
133 case MESA_FORMAT_ARGB8888
:
134 return PIPE_FORMAT_B8G8R8A8_UNORM
;
135 case MESA_FORMAT_ARGB8888_REV
:
136 return PIPE_FORMAT_A8R8G8B8_UNORM
;
137 case MESA_FORMAT_XRGB8888
:
138 return PIPE_FORMAT_B8G8R8X8_UNORM
;
139 case MESA_FORMAT_XRGB8888_REV
:
140 return PIPE_FORMAT_X8R8G8B8_UNORM
;
141 case MESA_FORMAT_ARGB1555
:
142 return PIPE_FORMAT_B5G5R5A1_UNORM
;
143 case MESA_FORMAT_ARGB4444
:
144 return PIPE_FORMAT_B4G4R4A4_UNORM
;
145 case MESA_FORMAT_RGB565
:
146 return PIPE_FORMAT_B5G6R5_UNORM
;
147 case MESA_FORMAT_AL88
:
148 return PIPE_FORMAT_L8A8_UNORM
;
150 return PIPE_FORMAT_A8_UNORM
;
152 return PIPE_FORMAT_L8_UNORM
;
154 return PIPE_FORMAT_I8_UNORM
;
155 case MESA_FORMAT_Z16
:
156 return PIPE_FORMAT_Z16_UNORM
;
157 case MESA_FORMAT_Z32
:
158 return PIPE_FORMAT_Z32_UNORM
;
159 case MESA_FORMAT_Z24_S8
:
160 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
161 case MESA_FORMAT_S8_Z24
:
162 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
163 case MESA_FORMAT_YCBCR
:
164 return PIPE_FORMAT_UYVY
;
165 #if FEATURE_texture_s3tc
166 case MESA_FORMAT_RGB_DXT1
:
167 return PIPE_FORMAT_DXT1_RGB
;
168 case MESA_FORMAT_RGBA_DXT1
:
169 return PIPE_FORMAT_DXT1_RGBA
;
170 case MESA_FORMAT_RGBA_DXT3
:
171 return PIPE_FORMAT_DXT3_RGBA
;
172 case MESA_FORMAT_RGBA_DXT5
:
173 return PIPE_FORMAT_DXT5_RGBA
;
174 #if FEATURE_EXT_texture_sRGB
175 case MESA_FORMAT_SRGB_DXT1
:
176 return PIPE_FORMAT_DXT1_SRGB
;
177 case MESA_FORMAT_SRGBA_DXT1
:
178 return PIPE_FORMAT_DXT1_SRGBA
;
179 case MESA_FORMAT_SRGBA_DXT3
:
180 return PIPE_FORMAT_DXT3_SRGBA
;
181 case MESA_FORMAT_SRGBA_DXT5
:
182 return PIPE_FORMAT_DXT5_SRGBA
;
185 #if FEATURE_EXT_texture_sRGB
186 case MESA_FORMAT_SLA8
:
187 return PIPE_FORMAT_L8A8_SRGB
;
188 case MESA_FORMAT_SL8
:
189 return PIPE_FORMAT_L8_SRGB
;
190 case MESA_FORMAT_SRGB8
:
191 return PIPE_FORMAT_R8G8B8_SRGB
;
192 case MESA_FORMAT_SRGBA8
:
193 return PIPE_FORMAT_A8B8G8R8_SRGB
;
194 case MESA_FORMAT_SARGB8
:
195 return PIPE_FORMAT_B8G8R8A8_SRGB
;
199 return PIPE_FORMAT_NONE
;
205 * Translate Gallium format to Mesa format.
208 st_pipe_format_to_mesa_format(enum pipe_format format
)
211 case PIPE_FORMAT_A8B8G8R8_UNORM
:
212 return MESA_FORMAT_RGBA8888
;
213 case PIPE_FORMAT_R8G8B8A8_UNORM
:
214 return MESA_FORMAT_RGBA8888_REV
;
215 case PIPE_FORMAT_B8G8R8A8_UNORM
:
216 return MESA_FORMAT_ARGB8888
;
217 case PIPE_FORMAT_A8R8G8B8_UNORM
:
218 return MESA_FORMAT_ARGB8888_REV
;
219 case PIPE_FORMAT_B8G8R8X8_UNORM
:
220 return MESA_FORMAT_XRGB8888
;
221 case PIPE_FORMAT_X8R8G8B8_UNORM
:
222 return MESA_FORMAT_XRGB8888_REV
;
223 case PIPE_FORMAT_B5G5R5A1_UNORM
:
224 return MESA_FORMAT_ARGB1555
;
225 case PIPE_FORMAT_B4G4R4A4_UNORM
:
226 return MESA_FORMAT_ARGB4444
;
227 case PIPE_FORMAT_B5G6R5_UNORM
:
228 return MESA_FORMAT_RGB565
;
229 case PIPE_FORMAT_L8A8_UNORM
:
230 return MESA_FORMAT_AL88
;
231 case PIPE_FORMAT_A8_UNORM
:
232 return MESA_FORMAT_A8
;
233 case PIPE_FORMAT_L8_UNORM
:
234 return MESA_FORMAT_L8
;
235 case PIPE_FORMAT_I8_UNORM
:
236 return MESA_FORMAT_I8
;
237 case PIPE_FORMAT_S8_USCALED
:
238 return MESA_FORMAT_S8
;
240 case PIPE_FORMAT_R16G16B16A16_SNORM
:
241 return MESA_FORMAT_SIGNED_RGBA_16
;
243 case PIPE_FORMAT_Z16_UNORM
:
244 return MESA_FORMAT_Z16
;
245 case PIPE_FORMAT_Z32_UNORM
:
246 return MESA_FORMAT_Z32
;
247 case PIPE_FORMAT_S8_USCALED_Z24_UNORM
:
248 return MESA_FORMAT_Z24_S8
;
249 case PIPE_FORMAT_X8Z24_UNORM
:
250 return MESA_FORMAT_Z24_X8
;
251 case PIPE_FORMAT_Z24X8_UNORM
:
252 return MESA_FORMAT_X8_Z24
;
253 case PIPE_FORMAT_Z24_UNORM_S8_USCALED
:
254 return MESA_FORMAT_S8_Z24
;
256 case PIPE_FORMAT_UYVY
:
257 return MESA_FORMAT_YCBCR
;
258 case PIPE_FORMAT_YUYV
:
259 return MESA_FORMAT_YCBCR_REV
;
261 #if FEATURE_texture_s3tc
262 case PIPE_FORMAT_DXT1_RGB
:
263 return MESA_FORMAT_RGB_DXT1
;
264 case PIPE_FORMAT_DXT1_RGBA
:
265 return MESA_FORMAT_RGBA_DXT1
;
266 case PIPE_FORMAT_DXT3_RGBA
:
267 return MESA_FORMAT_RGBA_DXT3
;
268 case PIPE_FORMAT_DXT5_RGBA
:
269 return MESA_FORMAT_RGBA_DXT5
;
270 #if FEATURE_EXT_texture_sRGB
271 case PIPE_FORMAT_DXT1_SRGB
:
272 return MESA_FORMAT_SRGB_DXT1
;
273 case PIPE_FORMAT_DXT1_SRGBA
:
274 return MESA_FORMAT_SRGBA_DXT1
;
275 case PIPE_FORMAT_DXT3_SRGBA
:
276 return MESA_FORMAT_SRGBA_DXT3
;
277 case PIPE_FORMAT_DXT5_SRGBA
:
278 return MESA_FORMAT_SRGBA_DXT5
;
282 #if FEATURE_EXT_texture_sRGB
283 case PIPE_FORMAT_L8A8_SRGB
:
284 return MESA_FORMAT_SLA8
;
285 case PIPE_FORMAT_L8_SRGB
:
286 return MESA_FORMAT_SL8
;
287 case PIPE_FORMAT_R8G8B8_SRGB
:
288 return MESA_FORMAT_SRGB8
;
289 case PIPE_FORMAT_A8B8G8R8_SRGB
:
290 return MESA_FORMAT_SRGBA8
;
291 case PIPE_FORMAT_B8G8R8A8_SRGB
:
292 return MESA_FORMAT_SARGB8
;
296 return MESA_FORMAT_NONE
;
302 * Find an RGBA format supported by the context/winsys.
304 static enum pipe_format
305 default_rgba_format(struct pipe_screen
*screen
,
306 enum pipe_texture_target target
,
310 static const enum pipe_format colorFormats
[] = {
311 PIPE_FORMAT_B8G8R8A8_UNORM
,
312 PIPE_FORMAT_A8R8G8B8_UNORM
,
313 PIPE_FORMAT_A8B8G8R8_UNORM
,
314 PIPE_FORMAT_B5G6R5_UNORM
317 for (i
= 0; i
< Elements(colorFormats
); i
++) {
318 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
319 return colorFormats
[i
];
322 return PIPE_FORMAT_NONE
;
326 * Find an RGB format supported by the context/winsys.
328 static enum pipe_format
329 default_rgb_format(struct pipe_screen
*screen
,
330 enum pipe_texture_target target
,
334 static const enum pipe_format colorFormats
[] = {
335 PIPE_FORMAT_B8G8R8X8_UNORM
,
336 PIPE_FORMAT_X8R8G8B8_UNORM
,
337 PIPE_FORMAT_X8B8G8R8_UNORM
,
338 PIPE_FORMAT_B8G8R8A8_UNORM
,
339 PIPE_FORMAT_A8R8G8B8_UNORM
,
340 PIPE_FORMAT_A8B8G8R8_UNORM
,
341 PIPE_FORMAT_B5G6R5_UNORM
344 for (i
= 0; i
< Elements(colorFormats
); i
++) {
345 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
346 return colorFormats
[i
];
349 return PIPE_FORMAT_NONE
;
353 * Find an sRGBA format supported by the context/winsys.
355 static enum pipe_format
356 default_srgba_format(struct pipe_screen
*screen
,
357 enum pipe_texture_target target
,
361 static const enum pipe_format colorFormats
[] = {
362 PIPE_FORMAT_B8G8R8A8_SRGB
,
363 PIPE_FORMAT_A8R8G8B8_SRGB
,
364 PIPE_FORMAT_A8B8G8R8_SRGB
,
367 for (i
= 0; i
< Elements(colorFormats
); i
++) {
368 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
369 return colorFormats
[i
];
372 return PIPE_FORMAT_NONE
;
376 * Search list of formats for first RGBA format with >8 bits/channel.
378 static enum pipe_format
379 default_deep_rgba_format(struct pipe_screen
*screen
,
380 enum pipe_texture_target target
,
384 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, target
, tex_usage
, geom_flags
)) {
385 return PIPE_FORMAT_R16G16B16A16_SNORM
;
387 if (tex_usage
& PIPE_BIND_RENDER_TARGET
)
388 return default_rgba_format(screen
, target
, tex_usage
, geom_flags
);
390 return PIPE_FORMAT_NONE
;
395 * Find an Z format supported by the context/winsys.
397 static enum pipe_format
398 default_depth_format(struct pipe_screen
*screen
,
399 enum pipe_texture_target target
,
403 static const enum pipe_format zFormats
[] = {
404 PIPE_FORMAT_Z16_UNORM
,
405 PIPE_FORMAT_Z32_UNORM
,
406 PIPE_FORMAT_Z24_UNORM_S8_USCALED
,
407 PIPE_FORMAT_S8_USCALED_Z24_UNORM
410 for (i
= 0; i
< Elements(zFormats
); i
++) {
411 if (screen
->is_format_supported( screen
, zFormats
[i
], target
, tex_usage
, geom_flags
)) {
415 return PIPE_FORMAT_NONE
;
420 * Given an OpenGL internalFormat value for a texture or surface, return
421 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
422 * \param target one of PIPE_TEXTURE_x
423 * \param tex_usage either PIPE_BIND_RENDER_TARGET
424 * or PIPE_BIND_SAMPLER_VIEW
427 st_choose_format(struct pipe_screen
*screen
, GLenum internalFormat
,
428 enum pipe_texture_target target
, unsigned tex_usage
)
430 unsigned geom_flags
= 0;
432 switch (internalFormat
) {
435 case GL_COMPRESSED_RGBA
:
439 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
442 case GL_COMPRESSED_RGB
:
443 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
445 if (tex_usage
& PIPE_BIND_RENDER_TARGET
)
446 return default_deep_rgba_format( screen
, target
, tex_usage
, geom_flags
);
448 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
452 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B4G4R4A4_UNORM
, target
, tex_usage
, geom_flags
))
453 return PIPE_FORMAT_B4G4R4A4_UNORM
;
454 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
457 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B5G5R5A1_UNORM
, target
, tex_usage
, geom_flags
))
458 return PIPE_FORMAT_B5G5R5A1_UNORM
;
459 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
465 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
470 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B5G6R5_UNORM
, target
, tex_usage
, geom_flags
))
471 return PIPE_FORMAT_B5G6R5_UNORM
;
472 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B5G5R5A1_UNORM
, target
, tex_usage
, geom_flags
))
473 return PIPE_FORMAT_B5G5R5A1_UNORM
;
474 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
481 case GL_COMPRESSED_ALPHA
:
482 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8_UNORM
, target
, tex_usage
, geom_flags
))
483 return PIPE_FORMAT_A8_UNORM
;
484 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
492 case GL_COMPRESSED_LUMINANCE
:
493 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_UNORM
, target
, tex_usage
, geom_flags
))
494 return PIPE_FORMAT_L8_UNORM
;
495 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
498 case GL_LUMINANCE_ALPHA
:
499 case GL_LUMINANCE4_ALPHA4
:
500 case GL_LUMINANCE6_ALPHA2
:
501 case GL_LUMINANCE8_ALPHA8
:
502 case GL_LUMINANCE12_ALPHA4
:
503 case GL_LUMINANCE12_ALPHA12
:
504 case GL_LUMINANCE16_ALPHA16
:
505 case GL_COMPRESSED_LUMINANCE_ALPHA
:
506 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8A8_UNORM
, target
, tex_usage
, geom_flags
))
507 return PIPE_FORMAT_L8A8_UNORM
;
508 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
515 case GL_COMPRESSED_INTENSITY
:
516 if (screen
->is_format_supported( screen
, PIPE_FORMAT_I8_UNORM
, target
, tex_usage
, geom_flags
))
517 return PIPE_FORMAT_I8_UNORM
;
518 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
521 if (screen
->is_format_supported(screen
, PIPE_FORMAT_UYVY
,
522 target
, tex_usage
, geom_flags
)) {
523 return PIPE_FORMAT_UYVY
;
525 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YUYV
,
526 target
, tex_usage
, geom_flags
)) {
527 return PIPE_FORMAT_YUYV
;
529 return PIPE_FORMAT_NONE
;
533 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
534 return PIPE_FORMAT_DXT1_RGB
;
536 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
537 return PIPE_FORMAT_DXT1_RGBA
;
541 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
542 return PIPE_FORMAT_DXT3_RGBA
;
544 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
545 return PIPE_FORMAT_DXT5_RGBA
;
548 case GL_COMPRESSED_RGB_FXT1_3DFX
:
549 return PIPE_FORMAT_RGB_FXT1
;
550 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
551 return PIPE_FORMAT_RGB_FXT1
;
554 case GL_DEPTH_COMPONENT16
:
555 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, target
, tex_usage
, geom_flags
))
556 return PIPE_FORMAT_Z16_UNORM
;
558 case GL_DEPTH_COMPONENT24
:
559 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24_UNORM_S8_USCALED
, target
, tex_usage
, geom_flags
))
560 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
561 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED_Z24_UNORM
, target
, tex_usage
, geom_flags
))
562 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
564 case GL_DEPTH_COMPONENT32
:
565 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, target
, tex_usage
, geom_flags
))
566 return PIPE_FORMAT_Z32_UNORM
;
568 case GL_DEPTH_COMPONENT
:
569 return default_depth_format( screen
, target
, tex_usage
, geom_flags
);
571 case GL_STENCIL_INDEX
:
572 case GL_STENCIL_INDEX1_EXT
:
573 case GL_STENCIL_INDEX4_EXT
:
574 case GL_STENCIL_INDEX8_EXT
:
575 case GL_STENCIL_INDEX16_EXT
:
576 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED
, target
, tex_usage
, geom_flags
))
577 return PIPE_FORMAT_S8_USCALED
;
578 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24_UNORM_S8_USCALED
, target
, tex_usage
, geom_flags
))
579 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
580 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED_Z24_UNORM
, target
, tex_usage
, geom_flags
))
581 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
582 return PIPE_FORMAT_NONE
;
584 case GL_DEPTH_STENCIL_EXT
:
585 case GL_DEPTH24_STENCIL8_EXT
:
586 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24_UNORM_S8_USCALED
, target
, tex_usage
, geom_flags
))
587 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
588 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED_Z24_UNORM
, target
, tex_usage
, geom_flags
))
589 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
590 return PIPE_FORMAT_NONE
;
594 case GL_COMPRESSED_SRGB_EXT
:
595 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
596 case GL_SRGB_ALPHA_EXT
:
597 case GL_SRGB8_ALPHA8_EXT
:
598 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
599 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
600 return PIPE_FORMAT_DXT1_SRGB
;
601 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
602 return PIPE_FORMAT_DXT1_SRGBA
;
603 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
604 return PIPE_FORMAT_DXT3_SRGBA
;
605 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
606 return PIPE_FORMAT_DXT5_SRGBA
;
608 case GL_SLUMINANCE_ALPHA_EXT
:
609 case GL_SLUMINANCE8_ALPHA8_EXT
:
610 case GL_COMPRESSED_SLUMINANCE_EXT
:
611 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
612 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8A8_SRGB
, target
, tex_usage
, geom_flags
))
613 return PIPE_FORMAT_L8A8_SRGB
;
614 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
616 case GL_SLUMINANCE_EXT
:
617 case GL_SLUMINANCE8_EXT
:
618 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_SRGB
, target
, tex_usage
, geom_flags
))
619 return PIPE_FORMAT_L8_SRGB
;
620 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
623 return PIPE_FORMAT_NONE
;
629 is_depth_or_stencil_format(GLenum internalFormat
)
631 switch (internalFormat
) {
632 case GL_DEPTH_COMPONENT
:
633 case GL_DEPTH_COMPONENT16
:
634 case GL_DEPTH_COMPONENT24
:
635 case GL_DEPTH_COMPONENT32
:
636 case GL_STENCIL_INDEX
:
637 case GL_STENCIL_INDEX1_EXT
:
638 case GL_STENCIL_INDEX4_EXT
:
639 case GL_STENCIL_INDEX8_EXT
:
640 case GL_STENCIL_INDEX16_EXT
:
641 case GL_DEPTH_STENCIL_EXT
:
642 case GL_DEPTH24_STENCIL8_EXT
:
650 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
653 st_choose_renderbuffer_format(struct pipe_screen
*screen
,
654 GLenum internalFormat
)
657 if (is_depth_or_stencil_format(internalFormat
))
658 usage
= PIPE_BIND_DEPTH_STENCIL
;
660 usage
= PIPE_BIND_RENDER_TARGET
;
661 return st_choose_format(screen
, internalFormat
, PIPE_TEXTURE_2D
, usage
);
666 * Called via ctx->Driver.chooseTextureFormat().
669 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
670 GLenum format
, GLenum type
)
672 enum pipe_format pFormat
;
677 pFormat
= st_choose_format(ctx
->st
->pipe
->screen
, internalFormat
,
678 PIPE_TEXTURE_2D
, PIPE_BIND_SAMPLER_VIEW
);
679 if (pFormat
== PIPE_FORMAT_NONE
)
680 return MESA_FORMAT_NONE
;
682 return st_pipe_format_to_mesa_format(pFormat
);
687 * Test if a gallium format is equivalent to a GL format/type.
690 st_equal_formats(enum pipe_format pFormat
, GLenum format
, GLenum type
)
693 case PIPE_FORMAT_A8B8G8R8_UNORM
:
694 return format
== GL_RGBA
&& type
== GL_UNSIGNED_BYTE
;
695 case PIPE_FORMAT_A8R8G8B8_UNORM
:
696 return format
== GL_BGRA
&& type
== GL_UNSIGNED_BYTE
;
697 case PIPE_FORMAT_B5G6R5_UNORM
:
698 return format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
;
699 /* XXX more combos... */