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_Z24_X8
:
164 return PIPE_FORMAT_X8Z24_UNORM
;
165 case MESA_FORMAT_X8_Z24
:
166 return PIPE_FORMAT_Z24X8_UNORM
;
167 case MESA_FORMAT_YCBCR
:
168 return PIPE_FORMAT_UYVY
;
169 #if FEATURE_texture_s3tc
170 case MESA_FORMAT_RGB_DXT1
:
171 return PIPE_FORMAT_DXT1_RGB
;
172 case MESA_FORMAT_RGBA_DXT1
:
173 return PIPE_FORMAT_DXT1_RGBA
;
174 case MESA_FORMAT_RGBA_DXT3
:
175 return PIPE_FORMAT_DXT3_RGBA
;
176 case MESA_FORMAT_RGBA_DXT5
:
177 return PIPE_FORMAT_DXT5_RGBA
;
178 #if FEATURE_EXT_texture_sRGB
179 case MESA_FORMAT_SRGB_DXT1
:
180 return PIPE_FORMAT_DXT1_SRGB
;
181 case MESA_FORMAT_SRGBA_DXT1
:
182 return PIPE_FORMAT_DXT1_SRGBA
;
183 case MESA_FORMAT_SRGBA_DXT3
:
184 return PIPE_FORMAT_DXT3_SRGBA
;
185 case MESA_FORMAT_SRGBA_DXT5
:
186 return PIPE_FORMAT_DXT5_SRGBA
;
189 #if FEATURE_EXT_texture_sRGB
190 case MESA_FORMAT_SLA8
:
191 return PIPE_FORMAT_L8A8_SRGB
;
192 case MESA_FORMAT_SL8
:
193 return PIPE_FORMAT_L8_SRGB
;
194 case MESA_FORMAT_SRGB8
:
195 return PIPE_FORMAT_R8G8B8_SRGB
;
196 case MESA_FORMAT_SRGBA8
:
197 return PIPE_FORMAT_A8B8G8R8_SRGB
;
198 case MESA_FORMAT_SARGB8
:
199 return PIPE_FORMAT_B8G8R8A8_SRGB
;
203 return PIPE_FORMAT_NONE
;
209 * Translate Gallium format to Mesa format.
212 st_pipe_format_to_mesa_format(enum pipe_format format
)
215 case PIPE_FORMAT_A8B8G8R8_UNORM
:
216 return MESA_FORMAT_RGBA8888
;
217 case PIPE_FORMAT_R8G8B8A8_UNORM
:
218 return MESA_FORMAT_RGBA8888_REV
;
219 case PIPE_FORMAT_B8G8R8A8_UNORM
:
220 return MESA_FORMAT_ARGB8888
;
221 case PIPE_FORMAT_A8R8G8B8_UNORM
:
222 return MESA_FORMAT_ARGB8888_REV
;
223 case PIPE_FORMAT_B8G8R8X8_UNORM
:
224 return MESA_FORMAT_XRGB8888
;
225 case PIPE_FORMAT_X8R8G8B8_UNORM
:
226 return MESA_FORMAT_XRGB8888_REV
;
227 case PIPE_FORMAT_B5G5R5A1_UNORM
:
228 return MESA_FORMAT_ARGB1555
;
229 case PIPE_FORMAT_B4G4R4A4_UNORM
:
230 return MESA_FORMAT_ARGB4444
;
231 case PIPE_FORMAT_B5G6R5_UNORM
:
232 return MESA_FORMAT_RGB565
;
233 case PIPE_FORMAT_L8A8_UNORM
:
234 return MESA_FORMAT_AL88
;
235 case PIPE_FORMAT_A8_UNORM
:
236 return MESA_FORMAT_A8
;
237 case PIPE_FORMAT_L8_UNORM
:
238 return MESA_FORMAT_L8
;
239 case PIPE_FORMAT_I8_UNORM
:
240 return MESA_FORMAT_I8
;
241 case PIPE_FORMAT_S8_USCALED
:
242 return MESA_FORMAT_S8
;
244 case PIPE_FORMAT_R16G16B16A16_SNORM
:
245 return MESA_FORMAT_SIGNED_RGBA_16
;
247 case PIPE_FORMAT_Z16_UNORM
:
248 return MESA_FORMAT_Z16
;
249 case PIPE_FORMAT_Z32_UNORM
:
250 return MESA_FORMAT_Z32
;
251 case PIPE_FORMAT_S8_USCALED_Z24_UNORM
:
252 return MESA_FORMAT_Z24_S8
;
253 case PIPE_FORMAT_X8Z24_UNORM
:
254 return MESA_FORMAT_Z24_X8
;
255 case PIPE_FORMAT_Z24X8_UNORM
:
256 return MESA_FORMAT_X8_Z24
;
257 case PIPE_FORMAT_Z24_UNORM_S8_USCALED
:
258 return MESA_FORMAT_S8_Z24
;
260 case PIPE_FORMAT_UYVY
:
261 return MESA_FORMAT_YCBCR
;
262 case PIPE_FORMAT_YUYV
:
263 return MESA_FORMAT_YCBCR_REV
;
265 #if FEATURE_texture_s3tc
266 case PIPE_FORMAT_DXT1_RGB
:
267 return MESA_FORMAT_RGB_DXT1
;
268 case PIPE_FORMAT_DXT1_RGBA
:
269 return MESA_FORMAT_RGBA_DXT1
;
270 case PIPE_FORMAT_DXT3_RGBA
:
271 return MESA_FORMAT_RGBA_DXT3
;
272 case PIPE_FORMAT_DXT5_RGBA
:
273 return MESA_FORMAT_RGBA_DXT5
;
274 #if FEATURE_EXT_texture_sRGB
275 case PIPE_FORMAT_DXT1_SRGB
:
276 return MESA_FORMAT_SRGB_DXT1
;
277 case PIPE_FORMAT_DXT1_SRGBA
:
278 return MESA_FORMAT_SRGBA_DXT1
;
279 case PIPE_FORMAT_DXT3_SRGBA
:
280 return MESA_FORMAT_SRGBA_DXT3
;
281 case PIPE_FORMAT_DXT5_SRGBA
:
282 return MESA_FORMAT_SRGBA_DXT5
;
286 #if FEATURE_EXT_texture_sRGB
287 case PIPE_FORMAT_L8A8_SRGB
:
288 return MESA_FORMAT_SLA8
;
289 case PIPE_FORMAT_L8_SRGB
:
290 return MESA_FORMAT_SL8
;
291 case PIPE_FORMAT_R8G8B8_SRGB
:
292 return MESA_FORMAT_SRGB8
;
293 case PIPE_FORMAT_A8B8G8R8_SRGB
:
294 return MESA_FORMAT_SRGBA8
;
295 case PIPE_FORMAT_B8G8R8A8_SRGB
:
296 return MESA_FORMAT_SARGB8
;
300 return MESA_FORMAT_NONE
;
306 * Find an RGBA format supported by the context/winsys.
308 static enum pipe_format
309 default_rgba_format(struct pipe_screen
*screen
,
310 enum pipe_texture_target target
,
314 static const enum pipe_format colorFormats
[] = {
315 PIPE_FORMAT_B8G8R8A8_UNORM
,
316 PIPE_FORMAT_A8R8G8B8_UNORM
,
317 PIPE_FORMAT_A8B8G8R8_UNORM
,
318 PIPE_FORMAT_B5G6R5_UNORM
321 for (i
= 0; i
< Elements(colorFormats
); i
++) {
322 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
323 return colorFormats
[i
];
326 return PIPE_FORMAT_NONE
;
330 * Find an RGB format supported by the context/winsys.
332 static enum pipe_format
333 default_rgb_format(struct pipe_screen
*screen
,
334 enum pipe_texture_target target
,
338 static const enum pipe_format colorFormats
[] = {
339 PIPE_FORMAT_B8G8R8X8_UNORM
,
340 PIPE_FORMAT_X8R8G8B8_UNORM
,
341 PIPE_FORMAT_X8B8G8R8_UNORM
,
342 PIPE_FORMAT_B8G8R8A8_UNORM
,
343 PIPE_FORMAT_A8R8G8B8_UNORM
,
344 PIPE_FORMAT_A8B8G8R8_UNORM
,
345 PIPE_FORMAT_B5G6R5_UNORM
348 for (i
= 0; i
< Elements(colorFormats
); i
++) {
349 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
350 return colorFormats
[i
];
353 return PIPE_FORMAT_NONE
;
357 * Find an sRGBA format supported by the context/winsys.
359 static enum pipe_format
360 default_srgba_format(struct pipe_screen
*screen
,
361 enum pipe_texture_target target
,
365 static const enum pipe_format colorFormats
[] = {
366 PIPE_FORMAT_B8G8R8A8_SRGB
,
367 PIPE_FORMAT_A8R8G8B8_SRGB
,
368 PIPE_FORMAT_A8B8G8R8_SRGB
,
371 for (i
= 0; i
< Elements(colorFormats
); i
++) {
372 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
373 return colorFormats
[i
];
376 return PIPE_FORMAT_NONE
;
380 * Search list of formats for first RGBA format with >8 bits/channel.
382 static enum pipe_format
383 default_deep_rgba_format(struct pipe_screen
*screen
,
384 enum pipe_texture_target target
,
388 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, target
, tex_usage
, geom_flags
)) {
389 return PIPE_FORMAT_R16G16B16A16_SNORM
;
391 if (tex_usage
& PIPE_BIND_RENDER_TARGET
)
392 return default_rgba_format(screen
, target
, tex_usage
, geom_flags
);
394 return PIPE_FORMAT_NONE
;
399 * Find an Z format supported by the context/winsys.
401 static enum pipe_format
402 default_depth_format(struct pipe_screen
*screen
,
403 enum pipe_texture_target target
,
407 static const enum pipe_format zFormats
[] = {
408 PIPE_FORMAT_Z16_UNORM
,
409 PIPE_FORMAT_Z32_UNORM
,
410 PIPE_FORMAT_Z24_UNORM_S8_USCALED
,
411 PIPE_FORMAT_S8_USCALED_Z24_UNORM
414 for (i
= 0; i
< Elements(zFormats
); i
++) {
415 if (screen
->is_format_supported( screen
, zFormats
[i
], target
, tex_usage
, geom_flags
)) {
419 return PIPE_FORMAT_NONE
;
424 * Given an OpenGL internalFormat value for a texture or surface, return
425 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
426 * \param target one of PIPE_TEXTURE_x
427 * \param tex_usage either PIPE_BIND_RENDER_TARGET
428 * or PIPE_BIND_SAMPLER_VIEW
431 st_choose_format(struct pipe_screen
*screen
, GLenum internalFormat
,
432 enum pipe_texture_target target
, unsigned tex_usage
)
434 unsigned geom_flags
= 0;
436 switch (internalFormat
) {
439 case GL_COMPRESSED_RGBA
:
443 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
446 case GL_COMPRESSED_RGB
:
447 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
449 if (tex_usage
& PIPE_BIND_RENDER_TARGET
)
450 return default_deep_rgba_format( screen
, target
, tex_usage
, geom_flags
);
452 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
456 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B4G4R4A4_UNORM
, target
, tex_usage
, geom_flags
))
457 return PIPE_FORMAT_B4G4R4A4_UNORM
;
458 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
461 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B5G5R5A1_UNORM
, target
, tex_usage
, geom_flags
))
462 return PIPE_FORMAT_B5G5R5A1_UNORM
;
463 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
469 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
474 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B5G6R5_UNORM
, target
, tex_usage
, geom_flags
))
475 return PIPE_FORMAT_B5G6R5_UNORM
;
476 if (screen
->is_format_supported( screen
, PIPE_FORMAT_B5G5R5A1_UNORM
, target
, tex_usage
, geom_flags
))
477 return PIPE_FORMAT_B5G5R5A1_UNORM
;
478 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
485 case GL_COMPRESSED_ALPHA
:
486 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8_UNORM
, target
, tex_usage
, geom_flags
))
487 return PIPE_FORMAT_A8_UNORM
;
488 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
496 case GL_COMPRESSED_LUMINANCE
:
497 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_UNORM
, target
, tex_usage
, geom_flags
))
498 return PIPE_FORMAT_L8_UNORM
;
499 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
502 case GL_LUMINANCE_ALPHA
:
503 case GL_LUMINANCE4_ALPHA4
:
504 case GL_LUMINANCE6_ALPHA2
:
505 case GL_LUMINANCE8_ALPHA8
:
506 case GL_LUMINANCE12_ALPHA4
:
507 case GL_LUMINANCE12_ALPHA12
:
508 case GL_LUMINANCE16_ALPHA16
:
509 case GL_COMPRESSED_LUMINANCE_ALPHA
:
510 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8A8_UNORM
, target
, tex_usage
, geom_flags
))
511 return PIPE_FORMAT_L8A8_UNORM
;
512 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
519 case GL_COMPRESSED_INTENSITY
:
520 if (screen
->is_format_supported( screen
, PIPE_FORMAT_I8_UNORM
, target
, tex_usage
, geom_flags
))
521 return PIPE_FORMAT_I8_UNORM
;
522 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
525 if (screen
->is_format_supported(screen
, PIPE_FORMAT_UYVY
,
526 target
, tex_usage
, geom_flags
)) {
527 return PIPE_FORMAT_UYVY
;
529 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YUYV
,
530 target
, tex_usage
, geom_flags
)) {
531 return PIPE_FORMAT_YUYV
;
533 return PIPE_FORMAT_NONE
;
537 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
538 return PIPE_FORMAT_DXT1_RGB
;
540 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
541 return PIPE_FORMAT_DXT1_RGBA
;
545 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
546 return PIPE_FORMAT_DXT3_RGBA
;
548 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
549 return PIPE_FORMAT_DXT5_RGBA
;
552 case GL_COMPRESSED_RGB_FXT1_3DFX
:
553 return PIPE_FORMAT_RGB_FXT1
;
554 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
555 return PIPE_FORMAT_RGB_FXT1
;
558 case GL_DEPTH_COMPONENT16
:
559 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, target
, tex_usage
, geom_flags
))
560 return PIPE_FORMAT_Z16_UNORM
;
562 case GL_DEPTH_COMPONENT24
:
563 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24_UNORM_S8_USCALED
, target
, tex_usage
, geom_flags
))
564 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
565 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED_Z24_UNORM
, target
, tex_usage
, geom_flags
))
566 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
568 case GL_DEPTH_COMPONENT32
:
569 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, target
, tex_usage
, geom_flags
))
570 return PIPE_FORMAT_Z32_UNORM
;
572 case GL_DEPTH_COMPONENT
:
573 return default_depth_format( screen
, target
, tex_usage
, geom_flags
);
575 case GL_STENCIL_INDEX
:
576 case GL_STENCIL_INDEX1_EXT
:
577 case GL_STENCIL_INDEX4_EXT
:
578 case GL_STENCIL_INDEX8_EXT
:
579 case GL_STENCIL_INDEX16_EXT
:
580 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED
, target
, tex_usage
, geom_flags
))
581 return PIPE_FORMAT_S8_USCALED
;
582 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24_UNORM_S8_USCALED
, target
, tex_usage
, geom_flags
))
583 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
584 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED_Z24_UNORM
, target
, tex_usage
, geom_flags
))
585 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
586 return PIPE_FORMAT_NONE
;
588 case GL_DEPTH_STENCIL_EXT
:
589 case GL_DEPTH24_STENCIL8_EXT
:
590 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24_UNORM_S8_USCALED
, target
, tex_usage
, geom_flags
))
591 return PIPE_FORMAT_Z24_UNORM_S8_USCALED
;
592 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_USCALED_Z24_UNORM
, target
, tex_usage
, geom_flags
))
593 return PIPE_FORMAT_S8_USCALED_Z24_UNORM
;
594 return PIPE_FORMAT_NONE
;
598 case GL_COMPRESSED_SRGB_EXT
:
599 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
600 case GL_SRGB_ALPHA_EXT
:
601 case GL_SRGB8_ALPHA8_EXT
:
602 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
603 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
604 return PIPE_FORMAT_DXT1_SRGB
;
605 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
606 return PIPE_FORMAT_DXT1_SRGBA
;
607 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
608 return PIPE_FORMAT_DXT3_SRGBA
;
609 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
610 return PIPE_FORMAT_DXT5_SRGBA
;
612 case GL_SLUMINANCE_ALPHA_EXT
:
613 case GL_SLUMINANCE8_ALPHA8_EXT
:
614 case GL_COMPRESSED_SLUMINANCE_EXT
:
615 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
616 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8A8_SRGB
, target
, tex_usage
, geom_flags
))
617 return PIPE_FORMAT_L8A8_SRGB
;
618 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
620 case GL_SLUMINANCE_EXT
:
621 case GL_SLUMINANCE8_EXT
:
622 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_SRGB
, target
, tex_usage
, geom_flags
))
623 return PIPE_FORMAT_L8_SRGB
;
624 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
627 return PIPE_FORMAT_NONE
;
633 is_depth_or_stencil_format(GLenum internalFormat
)
635 switch (internalFormat
) {
636 case GL_DEPTH_COMPONENT
:
637 case GL_DEPTH_COMPONENT16
:
638 case GL_DEPTH_COMPONENT24
:
639 case GL_DEPTH_COMPONENT32
:
640 case GL_STENCIL_INDEX
:
641 case GL_STENCIL_INDEX1_EXT
:
642 case GL_STENCIL_INDEX4_EXT
:
643 case GL_STENCIL_INDEX8_EXT
:
644 case GL_STENCIL_INDEX16_EXT
:
645 case GL_DEPTH_STENCIL_EXT
:
646 case GL_DEPTH24_STENCIL8_EXT
:
654 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
657 st_choose_renderbuffer_format(struct pipe_screen
*screen
,
658 GLenum internalFormat
)
661 if (is_depth_or_stencil_format(internalFormat
))
662 usage
= PIPE_BIND_DEPTH_STENCIL
;
664 usage
= PIPE_BIND_RENDER_TARGET
;
665 return st_choose_format(screen
, internalFormat
, PIPE_TEXTURE_2D
, usage
);
670 * Called via ctx->Driver.chooseTextureFormat().
673 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
674 GLenum format
, GLenum type
)
676 enum pipe_format pFormat
;
681 pFormat
= st_choose_format(ctx
->st
->pipe
->screen
, internalFormat
,
682 PIPE_TEXTURE_2D
, PIPE_BIND_SAMPLER_VIEW
);
683 if (pFormat
== PIPE_FORMAT_NONE
)
684 return MESA_FORMAT_NONE
;
686 return st_pipe_format_to_mesa_format(pFormat
);
691 * Test if a gallium format is equivalent to a GL format/type.
694 st_equal_formats(enum pipe_format pFormat
, GLenum format
, GLenum type
)
697 case PIPE_FORMAT_A8B8G8R8_UNORM
:
698 return format
== GL_RGBA
&& type
== GL_UNSIGNED_BYTE
;
699 case PIPE_FORMAT_A8R8G8B8_UNORM
:
700 return format
== GL_BGRA
&& type
== GL_UNSIGNED_BYTE
;
701 case PIPE_FORMAT_B5G6R5_UNORM
:
702 return format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
;
703 /* XXX more combos... */