1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * Copyright (c) 2008 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 * Texture Image-related functions.
35 #include "main/imports.h"
36 #include "main/context.h"
37 #include "main/texstore.h"
38 #include "main/texformat.h"
39 #include "main/enums.h"
40 #include "main/macros.h"
42 #include "pipe/p_context.h"
43 #include "pipe/p_defines.h"
44 #include "pipe/p_screen.h"
45 #include "util/u_format.h"
46 #include "st_context.h"
47 #include "st_format.h"
51 format_max_bits(enum pipe_format format
)
53 GLuint size
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 0);
55 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 1));
56 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 2));
57 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 3));
58 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0));
59 size
= MAX2(size
, util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1));
64 format_size(enum pipe_format format
)
67 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 0) +
68 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 1) +
69 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 2) +
70 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 3) +
71 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0) +
72 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1);
79 st_get_format_info(enum pipe_format format
, struct pipe_format_info
*pinfo
)
81 const struct util_format_description
*desc
;
83 desc
= util_format_description(format
);
86 if (desc
->layout
== UTIL_FORMAT_LAYOUT_ARITH
||
87 desc
->layout
== UTIL_FORMAT_LAYOUT_ARRAY
) {
89 printf("%s\n", pf_name( format
) );
93 if (format
== PIPE_FORMAT_A1R5G5B5_UNORM
|| format
== PIPE_FORMAT_R5G6B5_UNORM
) {
94 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
96 else if (format
== PIPE_FORMAT_S8Z24_UNORM
) {
97 pinfo
->datatype
= GL_UNSIGNED_INT_24_8
;
100 const GLuint size
= format_max_bits(format
);
102 if (desc
->type
== UTIL_FORMAT_TYPE_UNSIGNED
)
103 pinfo
->datatype
= GL_UNSIGNED_BYTE
;
105 pinfo
->datatype
= GL_BYTE
;
107 else if (size
== 16) {
108 if (desc
->type
== UTIL_FORMAT_TYPE_UNSIGNED
)
109 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
111 pinfo
->datatype
= GL_SHORT
;
114 assert( size
<= 32 );
115 if (desc
->type
== UTIL_FORMAT_TYPE_UNSIGNED
)
116 pinfo
->datatype
= GL_UNSIGNED_INT
;
118 pinfo
->datatype
= GL_INT
;
123 pinfo
->red_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 0);
124 pinfo
->green_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 1);
125 pinfo
->blue_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 2);
126 pinfo
->alpha_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 3);
127 pinfo
->depth_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0);
128 pinfo
->stencil_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1);
129 pinfo
->luminance_bits
= 0;
130 pinfo
->intensity_bits
= 0;
133 pinfo
->size
= format_size(format
) / 8;
135 /* Luminance & Intensity bits */
136 if (desc
->swizzle
[0] == UTIL_FORMAT_SWIZZLE_X
&&
137 desc
->swizzle
[1] == UTIL_FORMAT_SWIZZLE_X
&&
138 desc
->swizzle
[2] == UTIL_FORMAT_SWIZZLE_X
) {
139 if (desc
->swizzle
[3] == UTIL_FORMAT_SWIZZLE_X
) {
140 pinfo
->intensity_bits
= pinfo
->red_bits
;
143 pinfo
->luminance_bits
= pinfo
->red_bits
;
148 pinfo
->mesa_format
= st_pipe_format_to_mesa_format(format
);
150 else if (desc
->layout
== UTIL_FORMAT_LAYOUT_YUV
) {
151 pinfo
->mesa_format
= MESA_FORMAT_YCBCR
;
152 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
153 pinfo
->size
= 2; /* two bytes per "texel" */
156 /* compressed format? */
162 "ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n",
168 pinfo
->stencil_bits
);
171 pinfo
->format
= format
;
178 * Return bytes per pixel for the given format.
181 st_sizeof_format(enum pipe_format format
)
183 struct pipe_format_info info
;
184 if (!st_get_format_info( format
, &info
)) {
193 * Return bytes per pixel for the given format.
196 st_format_datatype(enum pipe_format format
)
198 struct pipe_format_info info
;
199 if (!st_get_format_info( format
, &info
)) {
203 return info
.datatype
;
208 st_mesa_format_to_pipe_format(gl_format mesaFormat
)
210 switch (mesaFormat
) {
212 case MESA_FORMAT_ARGB8888_REV
:
213 case MESA_FORMAT_ARGB8888
:
214 return PIPE_FORMAT_A8R8G8B8_UNORM
;
215 case MESA_FORMAT_XRGB8888
:
216 return PIPE_FORMAT_X8R8G8B8_UNORM
;
217 case MESA_FORMAT_ARGB1555
:
218 return PIPE_FORMAT_A1R5G5B5_UNORM
;
219 case MESA_FORMAT_ARGB4444
:
220 return PIPE_FORMAT_A4R4G4B4_UNORM
;
221 case MESA_FORMAT_RGB565
:
222 return PIPE_FORMAT_R5G6B5_UNORM
;
223 case MESA_FORMAT_AL88
:
224 return PIPE_FORMAT_A8L8_UNORM
;
226 return PIPE_FORMAT_A8_UNORM
;
228 return PIPE_FORMAT_L8_UNORM
;
230 return PIPE_FORMAT_I8_UNORM
;
231 case MESA_FORMAT_Z16
:
232 return PIPE_FORMAT_Z16_UNORM
;
233 case MESA_FORMAT_Z32
:
234 return PIPE_FORMAT_Z32_UNORM
;
235 case MESA_FORMAT_Z24_S8
:
236 return PIPE_FORMAT_Z24S8_UNORM
;
237 case MESA_FORMAT_S8_Z24
:
238 return PIPE_FORMAT_S8Z24_UNORM
;
239 case MESA_FORMAT_YCBCR
:
240 return PIPE_FORMAT_YCBCR
;
241 #if FEATURE_texture_s3tc
242 case MESA_FORMAT_RGB_DXT1
:
243 return PIPE_FORMAT_DXT1_RGB
;
244 case MESA_FORMAT_RGBA_DXT1
:
245 return PIPE_FORMAT_DXT1_RGBA
;
246 case MESA_FORMAT_RGBA_DXT3
:
247 return PIPE_FORMAT_DXT3_RGBA
;
248 case MESA_FORMAT_RGBA_DXT5
:
249 return PIPE_FORMAT_DXT5_RGBA
;
250 #if FEATURE_EXT_texture_sRGB
251 case MESA_FORMAT_SRGB_DXT1
:
252 return PIPE_FORMAT_DXT1_SRGB
;
253 case MESA_FORMAT_SRGBA_DXT1
:
254 return PIPE_FORMAT_DXT1_SRGBA
;
255 case MESA_FORMAT_SRGBA_DXT3
:
256 return PIPE_FORMAT_DXT3_SRGBA
;
257 case MESA_FORMAT_SRGBA_DXT5
:
258 return PIPE_FORMAT_DXT5_SRGBA
;
261 #if FEATURE_EXT_texture_sRGB
262 case MESA_FORMAT_SLA8
:
263 return PIPE_FORMAT_A8L8_SRGB
;
264 case MESA_FORMAT_SL8
:
265 return PIPE_FORMAT_L8_SRGB
;
266 case MESA_FORMAT_SRGB8
:
267 return PIPE_FORMAT_R8G8B8_SRGB
;
268 case MESA_FORMAT_SRGBA8
:
269 return PIPE_FORMAT_R8G8B8A8_SRGB
;
270 case MESA_FORMAT_SARGB8
:
271 return PIPE_FORMAT_A8R8G8B8_SRGB
;
281 st_pipe_format_to_mesa_format(enum pipe_format pipeFormat
)
283 switch (pipeFormat
) {
284 case PIPE_FORMAT_A8R8G8B8_UNORM
:
285 return MESA_FORMAT_ARGB8888
;
286 case PIPE_FORMAT_X8R8G8B8_UNORM
:
287 return MESA_FORMAT_XRGB8888
;
288 case PIPE_FORMAT_A1R5G5B5_UNORM
:
289 return MESA_FORMAT_ARGB1555
;
290 case PIPE_FORMAT_A4R4G4B4_UNORM
:
291 return MESA_FORMAT_ARGB4444
;
292 case PIPE_FORMAT_R5G6B5_UNORM
:
293 return MESA_FORMAT_RGB565
;
294 case PIPE_FORMAT_A8L8_UNORM
:
295 return MESA_FORMAT_AL88
;
296 case PIPE_FORMAT_A8_UNORM
:
297 return MESA_FORMAT_A8
;
298 case PIPE_FORMAT_L8_UNORM
:
299 return MESA_FORMAT_L8
;
300 case PIPE_FORMAT_I8_UNORM
:
301 return MESA_FORMAT_I8
;
302 case PIPE_FORMAT_Z16_UNORM
:
303 return MESA_FORMAT_Z16
;
304 case PIPE_FORMAT_Z32_UNORM
:
305 return MESA_FORMAT_Z32
;
306 case PIPE_FORMAT_Z24X8_UNORM
:
307 return MESA_FORMAT_Z24_X8
;
308 case PIPE_FORMAT_Z24S8_UNORM
:
309 return MESA_FORMAT_Z24_S8
;
310 case PIPE_FORMAT_X8Z24_UNORM
:
311 return MESA_FORMAT_X8_Z24
;
312 case PIPE_FORMAT_S8Z24_UNORM
:
313 return MESA_FORMAT_S8_Z24
;
314 case PIPE_FORMAT_S8_UNORM
:
315 return MESA_FORMAT_S8
;
317 case PIPE_FORMAT_YCBCR
:
318 return MESA_FORMAT_YCBCR
;
319 case PIPE_FORMAT_R16G16B16A16_SNORM
:
320 return MESA_FORMAT_SIGNED_RGBA_16
;
322 #if FEATURE_texture_s3tc
323 case PIPE_FORMAT_DXT1_RGB
:
324 return MESA_FORMAT_RGB_DXT1
;
325 case PIPE_FORMAT_DXT1_RGBA
:
326 return MESA_FORMAT_RGBA_DXT1
;
327 case PIPE_FORMAT_DXT3_RGBA
:
328 return MESA_FORMAT_RGBA_DXT3
;
329 case PIPE_FORMAT_DXT5_RGBA
:
330 return MESA_FORMAT_RGBA_DXT5
;
331 #if FEATURE_EXT_texture_sRGB
332 case PIPE_FORMAT_DXT1_SRGB
:
333 return MESA_FORMAT_SRGB_DXT1
;
334 case PIPE_FORMAT_DXT1_SRGBA
:
335 return MESA_FORMAT_SRGBA_DXT1
;
336 case PIPE_FORMAT_DXT3_SRGBA
:
337 return MESA_FORMAT_SRGBA_DXT3
;
338 case PIPE_FORMAT_DXT5_SRGBA
:
339 return MESA_FORMAT_SRGBA_DXT5
;
342 #if FEATURE_EXT_texture_sRGB
343 case PIPE_FORMAT_A8L8_SRGB
:
344 return MESA_FORMAT_SLA8
;
345 case PIPE_FORMAT_L8_SRGB
:
346 return MESA_FORMAT_SL8
;
347 case PIPE_FORMAT_R8G8B8_SRGB
:
348 return MESA_FORMAT_SRGB8
;
349 case PIPE_FORMAT_R8G8B8A8_SRGB
:
350 return MESA_FORMAT_SRGBA8
;
351 case PIPE_FORMAT_A8R8G8B8_SRGB
:
352 return MESA_FORMAT_SARGB8
;
362 * Find an RGBA format supported by the context/winsys.
364 static enum pipe_format
365 default_rgba_format(struct pipe_screen
*screen
,
366 enum pipe_texture_target target
,
370 static const enum pipe_format colorFormats
[] = {
371 PIPE_FORMAT_A8R8G8B8_UNORM
,
372 PIPE_FORMAT_B8G8R8A8_UNORM
,
373 PIPE_FORMAT_R8G8B8A8_UNORM
,
374 PIPE_FORMAT_R5G6B5_UNORM
377 for (i
= 0; i
< Elements(colorFormats
); i
++) {
378 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
379 return colorFormats
[i
];
382 return PIPE_FORMAT_NONE
;
386 * Find an sRGBA format supported by the context/winsys.
388 static enum pipe_format
389 default_srgba_format(struct pipe_screen
*screen
,
390 enum pipe_texture_target target
,
394 static const enum pipe_format colorFormats
[] = {
395 PIPE_FORMAT_A8R8G8B8_SRGB
,
396 PIPE_FORMAT_B8G8R8A8_SRGB
,
397 PIPE_FORMAT_R8G8B8A8_SRGB
,
400 for (i
= 0; i
< Elements(colorFormats
); i
++) {
401 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
402 return colorFormats
[i
];
405 return PIPE_FORMAT_NONE
;
409 * Search list of formats for first RGBA format with >8 bits/channel.
411 static enum pipe_format
412 default_deep_rgba_format(struct pipe_screen
*screen
,
413 enum pipe_texture_target target
,
417 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, target
, tex_usage
, geom_flags
)) {
418 return PIPE_FORMAT_R16G16B16A16_SNORM
;
420 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
421 return default_rgba_format(screen
, target
, tex_usage
, geom_flags
);
423 return PIPE_FORMAT_NONE
;
428 * Find an Z format supported by the context/winsys.
430 static enum pipe_format
431 default_depth_format(struct pipe_screen
*screen
,
432 enum pipe_texture_target target
,
436 static const enum pipe_format zFormats
[] = {
437 PIPE_FORMAT_Z16_UNORM
,
438 PIPE_FORMAT_Z32_UNORM
,
439 PIPE_FORMAT_S8Z24_UNORM
,
440 PIPE_FORMAT_Z24S8_UNORM
443 for (i
= 0; i
< Elements(zFormats
); i
++) {
444 if (screen
->is_format_supported( screen
, zFormats
[i
], target
, tex_usage
, geom_flags
)) {
448 return PIPE_FORMAT_NONE
;
453 * Given an OpenGL internalFormat value for a texture or surface, return
454 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
455 * \param target one of PIPE_TEXTURE_x
456 * \param tex_usage either PIPE_TEXTURE_USAGE_RENDER_TARGET
457 * or PIPE_TEXTURE_USAGE_SAMPLER
460 st_choose_format(struct pipe_screen
*screen
, GLenum internalFormat
,
461 enum pipe_texture_target target
, unsigned tex_usage
)
463 unsigned geom_flags
= 0;
465 switch (internalFormat
) {
468 case GL_COMPRESSED_RGBA
:
471 case GL_COMPRESSED_RGB
:
475 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
477 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
478 return default_deep_rgba_format( screen
, target
, tex_usage
, geom_flags
);
480 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
484 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A4R4G4B4_UNORM
, target
, tex_usage
, geom_flags
))
485 return PIPE_FORMAT_A4R4G4B4_UNORM
;
486 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
489 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
490 return PIPE_FORMAT_A1R5G5B5_UNORM
;
491 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
497 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
502 if (screen
->is_format_supported( screen
, PIPE_FORMAT_R5G6B5_UNORM
, target
, tex_usage
, geom_flags
))
503 return PIPE_FORMAT_R5G6B5_UNORM
;
504 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
505 return PIPE_FORMAT_A1R5G5B5_UNORM
;
506 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
513 case GL_COMPRESSED_ALPHA
:
514 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8_UNORM
, target
, tex_usage
, geom_flags
))
515 return PIPE_FORMAT_A8_UNORM
;
516 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
524 case GL_COMPRESSED_LUMINANCE
:
525 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_UNORM
, target
, tex_usage
, geom_flags
))
526 return PIPE_FORMAT_L8_UNORM
;
527 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
530 case GL_LUMINANCE_ALPHA
:
531 case GL_LUMINANCE4_ALPHA4
:
532 case GL_LUMINANCE6_ALPHA2
:
533 case GL_LUMINANCE8_ALPHA8
:
534 case GL_LUMINANCE12_ALPHA4
:
535 case GL_LUMINANCE12_ALPHA12
:
536 case GL_LUMINANCE16_ALPHA16
:
537 case GL_COMPRESSED_LUMINANCE_ALPHA
:
538 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_UNORM
, target
, tex_usage
, geom_flags
))
539 return PIPE_FORMAT_A8L8_UNORM
;
540 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
547 case GL_COMPRESSED_INTENSITY
:
548 if (screen
->is_format_supported( screen
, PIPE_FORMAT_I8_UNORM
, target
, tex_usage
, geom_flags
))
549 return PIPE_FORMAT_I8_UNORM
;
550 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
553 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
554 target
, tex_usage
, geom_flags
)) {
555 return PIPE_FORMAT_YCBCR
;
557 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
558 target
, tex_usage
, geom_flags
)) {
559 return PIPE_FORMAT_YCBCR_REV
;
561 return PIPE_FORMAT_NONE
;
565 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
566 return PIPE_FORMAT_DXT1_RGB
;
568 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
569 return PIPE_FORMAT_DXT1_RGBA
;
573 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
574 return PIPE_FORMAT_DXT3_RGBA
;
576 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
577 return PIPE_FORMAT_DXT5_RGBA
;
580 case GL_COMPRESSED_RGB_FXT1_3DFX
:
581 return PIPE_FORMAT_RGB_FXT1
;
582 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
583 return PIPE_FORMAT_RGB_FXT1
;
586 case GL_DEPTH_COMPONENT16
:
587 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, target
, tex_usage
, geom_flags
))
588 return PIPE_FORMAT_Z16_UNORM
;
590 case GL_DEPTH_COMPONENT24
:
591 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
592 return PIPE_FORMAT_S8Z24_UNORM
;
593 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
594 return PIPE_FORMAT_Z24S8_UNORM
;
596 case GL_DEPTH_COMPONENT32
:
597 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, target
, tex_usage
, geom_flags
))
598 return PIPE_FORMAT_Z32_UNORM
;
600 case GL_DEPTH_COMPONENT
:
601 return default_depth_format( screen
, target
, tex_usage
, geom_flags
);
603 case GL_STENCIL_INDEX
:
604 case GL_STENCIL_INDEX1_EXT
:
605 case GL_STENCIL_INDEX4_EXT
:
606 case GL_STENCIL_INDEX8_EXT
:
607 case GL_STENCIL_INDEX16_EXT
:
608 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_UNORM
, target
, tex_usage
, geom_flags
))
609 return PIPE_FORMAT_S8_UNORM
;
610 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
611 return PIPE_FORMAT_S8Z24_UNORM
;
612 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
613 return PIPE_FORMAT_Z24S8_UNORM
;
614 return PIPE_FORMAT_NONE
;
616 case GL_DEPTH_STENCIL_EXT
:
617 case GL_DEPTH24_STENCIL8_EXT
:
618 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
619 return PIPE_FORMAT_S8Z24_UNORM
;
620 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
621 return PIPE_FORMAT_Z24S8_UNORM
;
622 return PIPE_FORMAT_NONE
;
626 case GL_COMPRESSED_SRGB_EXT
:
627 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
628 case GL_SRGB_ALPHA_EXT
:
629 case GL_SRGB8_ALPHA8_EXT
:
630 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
631 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
632 return PIPE_FORMAT_DXT1_SRGB
;
633 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
634 return PIPE_FORMAT_DXT1_SRGBA
;
635 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
636 return PIPE_FORMAT_DXT3_SRGBA
;
637 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
638 return PIPE_FORMAT_DXT5_SRGBA
;
640 case GL_SLUMINANCE_ALPHA_EXT
:
641 case GL_SLUMINANCE8_ALPHA8_EXT
:
642 case GL_COMPRESSED_SLUMINANCE_EXT
:
643 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
644 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_SRGB
, target
, tex_usage
, geom_flags
))
645 return PIPE_FORMAT_A8L8_SRGB
;
646 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
648 case GL_SLUMINANCE_EXT
:
649 case GL_SLUMINANCE8_EXT
:
650 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_SRGB
, target
, tex_usage
, geom_flags
))
651 return PIPE_FORMAT_L8_SRGB
;
652 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
655 return PIPE_FORMAT_NONE
;
661 is_depth_or_stencil_format(GLenum internalFormat
)
663 switch (internalFormat
) {
664 case GL_DEPTH_COMPONENT
:
665 case GL_DEPTH_COMPONENT16
:
666 case GL_DEPTH_COMPONENT24
:
667 case GL_DEPTH_COMPONENT32
:
668 case GL_STENCIL_INDEX
:
669 case GL_STENCIL_INDEX1_EXT
:
670 case GL_STENCIL_INDEX4_EXT
:
671 case GL_STENCIL_INDEX8_EXT
:
672 case GL_STENCIL_INDEX16_EXT
:
673 case GL_DEPTH_STENCIL_EXT
:
674 case GL_DEPTH24_STENCIL8_EXT
:
682 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
685 st_choose_renderbuffer_format(struct pipe_screen
*screen
,
686 GLenum internalFormat
)
689 if (is_depth_or_stencil_format(internalFormat
))
690 usage
= PIPE_TEXTURE_USAGE_DEPTH_STENCIL
;
692 usage
= PIPE_TEXTURE_USAGE_RENDER_TARGET
;
693 return st_choose_format(screen
, internalFormat
, PIPE_TEXTURE_2D
, usage
);
698 translate_gallium_format_to_mesa_format(enum pipe_format format
)
701 case PIPE_FORMAT_A8R8G8B8_UNORM
:
702 return MESA_FORMAT_ARGB8888
;
703 case PIPE_FORMAT_X8R8G8B8_UNORM
:
704 return MESA_FORMAT_XRGB8888
;
705 case PIPE_FORMAT_A1R5G5B5_UNORM
:
706 return MESA_FORMAT_ARGB1555
;
707 case PIPE_FORMAT_A4R4G4B4_UNORM
:
708 return MESA_FORMAT_ARGB4444
;
709 case PIPE_FORMAT_R5G6B5_UNORM
:
710 return MESA_FORMAT_RGB565
;
711 case PIPE_FORMAT_A8L8_UNORM
:
712 return MESA_FORMAT_AL88
;
713 case PIPE_FORMAT_A8_UNORM
:
714 return MESA_FORMAT_A8
;
715 case PIPE_FORMAT_L8_UNORM
:
716 return MESA_FORMAT_L8
;
717 case PIPE_FORMAT_I8_UNORM
:
718 return MESA_FORMAT_I8
;
719 case PIPE_FORMAT_Z16_UNORM
:
720 return MESA_FORMAT_Z16
;
721 case PIPE_FORMAT_Z32_UNORM
:
722 return MESA_FORMAT_Z32
;
723 case PIPE_FORMAT_Z24S8_UNORM
:
724 return MESA_FORMAT_Z24_S8
;
725 case PIPE_FORMAT_X8Z24_UNORM
:
726 return MESA_FORMAT_X8_Z24
;
727 case PIPE_FORMAT_S8Z24_UNORM
:
728 return MESA_FORMAT_S8_Z24
;
729 case PIPE_FORMAT_YCBCR
:
730 return MESA_FORMAT_YCBCR
;
731 case PIPE_FORMAT_YCBCR_REV
:
732 return MESA_FORMAT_YCBCR_REV
;
733 #if FEATURE_texture_s3tc
734 case PIPE_FORMAT_DXT1_RGB
:
735 return MESA_FORMAT_RGB_DXT1
;
736 case PIPE_FORMAT_DXT1_RGBA
:
737 return MESA_FORMAT_RGBA_DXT1
;
738 case PIPE_FORMAT_DXT3_RGBA
:
739 return MESA_FORMAT_RGBA_DXT3
;
740 case PIPE_FORMAT_DXT5_RGBA
:
741 return MESA_FORMAT_RGBA_DXT5
;
742 #if FEATURE_EXT_texture_sRGB
743 case PIPE_FORMAT_DXT1_SRGB
:
744 return MESA_FORMAT_SRGB_DXT1
;
745 case PIPE_FORMAT_DXT1_SRGBA
:
746 return MESA_FORMAT_SRGBA_DXT1
;
747 case PIPE_FORMAT_DXT3_SRGBA
:
748 return MESA_FORMAT_SRGBA_DXT3
;
749 case PIPE_FORMAT_DXT5_SRGBA
:
750 return MESA_FORMAT_SRGBA_DXT5
;
753 #if FEATURE_EXT_texture_sRGB
754 case PIPE_FORMAT_A8L8_SRGB
:
755 return MESA_FORMAT_SLA8
;
756 case PIPE_FORMAT_L8_SRGB
:
757 return MESA_FORMAT_SL8
;
758 case PIPE_FORMAT_R8G8B8_SRGB
:
759 return MESA_FORMAT_SRGB8
;
760 case PIPE_FORMAT_R8G8B8A8_SRGB
:
761 return MESA_FORMAT_SRGBA8
;
762 case PIPE_FORMAT_A8R8G8B8_SRGB
:
763 return MESA_FORMAT_SARGB8
;
765 /* XXX add additional cases */
768 return MESA_FORMAT_NONE
;
774 * Called via ctx->Driver.chooseTextureFormat().
777 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
778 GLenum format
, GLenum type
)
780 enum pipe_format pFormat
;
785 pFormat
= st_choose_format(ctx
->st
->pipe
->screen
, internalFormat
,
786 PIPE_TEXTURE_2D
, PIPE_TEXTURE_USAGE_SAMPLER
);
787 if (pFormat
== PIPE_FORMAT_NONE
)
788 return MESA_FORMAT_NONE
;
790 return translate_gallium_format_to_mesa_format(pFormat
);
795 * Test if a gallium format is equivalent to a GL format/type.
798 st_equal_formats(enum pipe_format pFormat
, GLenum format
, GLenum type
)
801 case PIPE_FORMAT_R8G8B8A8_UNORM
:
802 return format
== GL_RGBA
&& type
== GL_UNSIGNED_BYTE
;
803 case PIPE_FORMAT_B8G8R8A8_UNORM
:
804 return format
== GL_BGRA
&& type
== GL_UNSIGNED_BYTE
;
805 case PIPE_FORMAT_R5G6B5_UNORM
:
806 return format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
;
807 /* XXX more combos... */