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 format
== PIPE_FORMAT_Z24S8_UNORM
) {
98 pinfo
->datatype
= GL_UNSIGNED_INT_24_8
;
101 const GLuint size
= format_max_bits(format
);
103 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
104 pinfo
->datatype
= GL_UNSIGNED_BYTE
;
106 pinfo
->datatype
= GL_BYTE
;
108 else if (size
== 16) {
109 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
110 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
112 pinfo
->datatype
= GL_SHORT
;
115 assert( size
<= 32 );
116 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
117 pinfo
->datatype
= GL_UNSIGNED_INT
;
119 pinfo
->datatype
= GL_INT
;
124 pinfo
->red_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 0);
125 pinfo
->green_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 1);
126 pinfo
->blue_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 2);
127 pinfo
->alpha_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 3);
128 pinfo
->depth_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0);
129 pinfo
->stencil_bits
= util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1);
130 pinfo
->luminance_bits
= 0;
131 pinfo
->intensity_bits
= 0;
134 pinfo
->size
= format_size(format
) / 8;
136 /* Luminance & Intensity bits */
137 if (desc
->swizzle
[0] == UTIL_FORMAT_SWIZZLE_X
&&
138 desc
->swizzle
[1] == UTIL_FORMAT_SWIZZLE_X
&&
139 desc
->swizzle
[2] == UTIL_FORMAT_SWIZZLE_X
) {
140 if (desc
->swizzle
[3] == UTIL_FORMAT_SWIZZLE_X
) {
141 pinfo
->intensity_bits
= pinfo
->red_bits
;
144 pinfo
->luminance_bits
= pinfo
->red_bits
;
149 pinfo
->mesa_format
= st_pipe_format_to_mesa_format(format
);
151 else if (desc
->layout
== UTIL_FORMAT_LAYOUT_YUV
) {
152 pinfo
->mesa_format
= MESA_FORMAT_YCBCR
;
153 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
154 pinfo
->size
= 2; /* two bytes per "texel" */
157 /* compressed format? */
163 "ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n",
169 pinfo
->stencil_bits
);
172 pinfo
->format
= format
;
179 * Return bytes per pixel for the given format.
182 st_sizeof_format(enum pipe_format format
)
184 struct pipe_format_info info
;
185 if (!st_get_format_info( format
, &info
)) {
194 * Return bytes per pixel for the given format.
197 st_format_datatype(enum pipe_format format
)
199 struct pipe_format_info info
;
200 if (!st_get_format_info( format
, &info
)) {
204 return info
.datatype
;
209 st_mesa_format_to_pipe_format(gl_format mesaFormat
)
211 switch (mesaFormat
) {
213 case MESA_FORMAT_ARGB8888_REV
:
214 case MESA_FORMAT_ARGB8888
:
215 return PIPE_FORMAT_A8R8G8B8_UNORM
;
216 case MESA_FORMAT_XRGB8888
:
217 return PIPE_FORMAT_X8R8G8B8_UNORM
;
218 case MESA_FORMAT_ARGB1555
:
219 return PIPE_FORMAT_A1R5G5B5_UNORM
;
220 case MESA_FORMAT_ARGB4444
:
221 return PIPE_FORMAT_A4R4G4B4_UNORM
;
222 case MESA_FORMAT_RGB565
:
223 return PIPE_FORMAT_R5G6B5_UNORM
;
224 case MESA_FORMAT_AL88
:
225 return PIPE_FORMAT_A8L8_UNORM
;
227 return PIPE_FORMAT_A8_UNORM
;
229 return PIPE_FORMAT_L8_UNORM
;
231 return PIPE_FORMAT_I8_UNORM
;
232 case MESA_FORMAT_Z16
:
233 return PIPE_FORMAT_Z16_UNORM
;
234 case MESA_FORMAT_Z32
:
235 return PIPE_FORMAT_Z32_UNORM
;
236 case MESA_FORMAT_Z24_S8
:
237 return PIPE_FORMAT_Z24S8_UNORM
;
238 case MESA_FORMAT_S8_Z24
:
239 return PIPE_FORMAT_S8Z24_UNORM
;
240 case MESA_FORMAT_YCBCR
:
241 return PIPE_FORMAT_YCBCR
;
242 #if FEATURE_texture_s3tc
243 case MESA_FORMAT_RGB_DXT1
:
244 return PIPE_FORMAT_DXT1_RGB
;
245 case MESA_FORMAT_RGBA_DXT1
:
246 return PIPE_FORMAT_DXT1_RGBA
;
247 case MESA_FORMAT_RGBA_DXT3
:
248 return PIPE_FORMAT_DXT3_RGBA
;
249 case MESA_FORMAT_RGBA_DXT5
:
250 return PIPE_FORMAT_DXT5_RGBA
;
251 #if FEATURE_EXT_texture_sRGB
252 case MESA_FORMAT_SRGB_DXT1
:
253 return PIPE_FORMAT_DXT1_SRGB
;
254 case MESA_FORMAT_SRGBA_DXT1
:
255 return PIPE_FORMAT_DXT1_SRGBA
;
256 case MESA_FORMAT_SRGBA_DXT3
:
257 return PIPE_FORMAT_DXT3_SRGBA
;
258 case MESA_FORMAT_SRGBA_DXT5
:
259 return PIPE_FORMAT_DXT5_SRGBA
;
262 #if FEATURE_EXT_texture_sRGB
263 case MESA_FORMAT_SLA8
:
264 return PIPE_FORMAT_A8L8_SRGB
;
265 case MESA_FORMAT_SL8
:
266 return PIPE_FORMAT_L8_SRGB
;
267 case MESA_FORMAT_SRGB8
:
268 return PIPE_FORMAT_R8G8B8_SRGB
;
269 case MESA_FORMAT_SRGBA8
:
270 return PIPE_FORMAT_R8G8B8A8_SRGB
;
271 case MESA_FORMAT_SARGB8
:
272 return PIPE_FORMAT_A8R8G8B8_SRGB
;
282 st_pipe_format_to_mesa_format(enum pipe_format pipeFormat
)
284 switch (pipeFormat
) {
285 case PIPE_FORMAT_A8R8G8B8_UNORM
:
286 return MESA_FORMAT_ARGB8888
;
287 case PIPE_FORMAT_X8R8G8B8_UNORM
:
288 return MESA_FORMAT_XRGB8888
;
289 case PIPE_FORMAT_B8G8R8A8_UNORM
:
290 return MESA_FORMAT_ARGB8888_REV
;
291 case PIPE_FORMAT_A1R5G5B5_UNORM
:
292 return MESA_FORMAT_ARGB1555
;
293 case PIPE_FORMAT_A4R4G4B4_UNORM
:
294 return MESA_FORMAT_ARGB4444
;
295 case PIPE_FORMAT_R5G6B5_UNORM
:
296 return MESA_FORMAT_RGB565
;
297 case PIPE_FORMAT_A8L8_UNORM
:
298 return MESA_FORMAT_AL88
;
299 case PIPE_FORMAT_A8_UNORM
:
300 return MESA_FORMAT_A8
;
301 case PIPE_FORMAT_L8_UNORM
:
302 return MESA_FORMAT_L8
;
303 case PIPE_FORMAT_I8_UNORM
:
304 return MESA_FORMAT_I8
;
305 case PIPE_FORMAT_Z16_UNORM
:
306 return MESA_FORMAT_Z16
;
307 case PIPE_FORMAT_Z32_UNORM
:
308 return MESA_FORMAT_Z32
;
309 case PIPE_FORMAT_Z24X8_UNORM
:
310 return MESA_FORMAT_Z24_X8
;
311 case PIPE_FORMAT_Z24S8_UNORM
:
312 return MESA_FORMAT_Z24_S8
;
313 case PIPE_FORMAT_X8Z24_UNORM
:
314 return MESA_FORMAT_X8_Z24
;
315 case PIPE_FORMAT_S8Z24_UNORM
:
316 return MESA_FORMAT_S8_Z24
;
317 case PIPE_FORMAT_S8_UNORM
:
318 return MESA_FORMAT_S8
;
320 case PIPE_FORMAT_YCBCR
:
321 return MESA_FORMAT_YCBCR
;
322 case PIPE_FORMAT_R16G16B16A16_SNORM
:
323 return MESA_FORMAT_SIGNED_RGBA_16
;
325 #if FEATURE_texture_s3tc
326 case PIPE_FORMAT_DXT1_RGB
:
327 return MESA_FORMAT_RGB_DXT1
;
328 case PIPE_FORMAT_DXT1_RGBA
:
329 return MESA_FORMAT_RGBA_DXT1
;
330 case PIPE_FORMAT_DXT3_RGBA
:
331 return MESA_FORMAT_RGBA_DXT3
;
332 case PIPE_FORMAT_DXT5_RGBA
:
333 return MESA_FORMAT_RGBA_DXT5
;
334 #if FEATURE_EXT_texture_sRGB
335 case PIPE_FORMAT_DXT1_SRGB
:
336 return MESA_FORMAT_SRGB_DXT1
;
337 case PIPE_FORMAT_DXT1_SRGBA
:
338 return MESA_FORMAT_SRGBA_DXT1
;
339 case PIPE_FORMAT_DXT3_SRGBA
:
340 return MESA_FORMAT_SRGBA_DXT3
;
341 case PIPE_FORMAT_DXT5_SRGBA
:
342 return MESA_FORMAT_SRGBA_DXT5
;
345 #if FEATURE_EXT_texture_sRGB
346 case PIPE_FORMAT_A8L8_SRGB
:
347 return MESA_FORMAT_SLA8
;
348 case PIPE_FORMAT_L8_SRGB
:
349 return MESA_FORMAT_SL8
;
350 case PIPE_FORMAT_R8G8B8_SRGB
:
351 return MESA_FORMAT_SRGB8
;
352 case PIPE_FORMAT_R8G8B8A8_SRGB
:
353 return MESA_FORMAT_SRGBA8
;
354 case PIPE_FORMAT_A8R8G8B8_SRGB
:
355 return MESA_FORMAT_SARGB8
;
365 * Find an RGBA format supported by the context/winsys.
367 static enum pipe_format
368 default_rgba_format(struct pipe_screen
*screen
,
369 enum pipe_texture_target target
,
373 static const enum pipe_format colorFormats
[] = {
374 PIPE_FORMAT_A8R8G8B8_UNORM
,
375 PIPE_FORMAT_B8G8R8A8_UNORM
,
376 PIPE_FORMAT_R8G8B8A8_UNORM
,
377 PIPE_FORMAT_R5G6B5_UNORM
380 for (i
= 0; i
< Elements(colorFormats
); i
++) {
381 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
382 return colorFormats
[i
];
385 return PIPE_FORMAT_NONE
;
389 * Find an RGB format supported by the context/winsys.
391 static enum pipe_format
392 default_rgb_format(struct pipe_screen
*screen
,
393 enum pipe_texture_target target
,
397 static const enum pipe_format colorFormats
[] = {
398 PIPE_FORMAT_X8R8G8B8_UNORM
,
399 PIPE_FORMAT_B8G8R8X8_UNORM
,
400 PIPE_FORMAT_R8G8B8X8_UNORM
,
401 PIPE_FORMAT_A8R8G8B8_UNORM
,
402 PIPE_FORMAT_B8G8R8A8_UNORM
,
403 PIPE_FORMAT_R8G8B8A8_UNORM
,
404 PIPE_FORMAT_R5G6B5_UNORM
407 for (i
= 0; i
< Elements(colorFormats
); i
++) {
408 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
409 return colorFormats
[i
];
412 return PIPE_FORMAT_NONE
;
416 * Find an sRGBA format supported by the context/winsys.
418 static enum pipe_format
419 default_srgba_format(struct pipe_screen
*screen
,
420 enum pipe_texture_target target
,
424 static const enum pipe_format colorFormats
[] = {
425 PIPE_FORMAT_A8R8G8B8_SRGB
,
426 PIPE_FORMAT_B8G8R8A8_SRGB
,
427 PIPE_FORMAT_R8G8B8A8_SRGB
,
430 for (i
= 0; i
< Elements(colorFormats
); i
++) {
431 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
432 return colorFormats
[i
];
435 return PIPE_FORMAT_NONE
;
439 * Search list of formats for first RGBA format with >8 bits/channel.
441 static enum pipe_format
442 default_deep_rgba_format(struct pipe_screen
*screen
,
443 enum pipe_texture_target target
,
447 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, target
, tex_usage
, geom_flags
)) {
448 return PIPE_FORMAT_R16G16B16A16_SNORM
;
450 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
451 return default_rgba_format(screen
, target
, tex_usage
, geom_flags
);
453 return PIPE_FORMAT_NONE
;
458 * Find an Z format supported by the context/winsys.
460 static enum pipe_format
461 default_depth_format(struct pipe_screen
*screen
,
462 enum pipe_texture_target target
,
466 static const enum pipe_format zFormats
[] = {
467 PIPE_FORMAT_Z16_UNORM
,
468 PIPE_FORMAT_Z32_UNORM
,
469 PIPE_FORMAT_S8Z24_UNORM
,
470 PIPE_FORMAT_Z24S8_UNORM
473 for (i
= 0; i
< Elements(zFormats
); i
++) {
474 if (screen
->is_format_supported( screen
, zFormats
[i
], target
, tex_usage
, geom_flags
)) {
478 return PIPE_FORMAT_NONE
;
483 * Given an OpenGL internalFormat value for a texture or surface, return
484 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
485 * \param target one of PIPE_TEXTURE_x
486 * \param tex_usage either PIPE_TEXTURE_USAGE_RENDER_TARGET
487 * or PIPE_TEXTURE_USAGE_SAMPLER
490 st_choose_format(struct pipe_screen
*screen
, GLenum internalFormat
,
491 enum pipe_texture_target target
, unsigned tex_usage
)
493 unsigned geom_flags
= 0;
495 switch (internalFormat
) {
498 case GL_COMPRESSED_RGBA
:
502 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
505 case GL_COMPRESSED_RGB
:
506 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
508 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
509 return default_deep_rgba_format( screen
, target
, tex_usage
, geom_flags
);
511 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
515 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A4R4G4B4_UNORM
, target
, tex_usage
, geom_flags
))
516 return PIPE_FORMAT_A4R4G4B4_UNORM
;
517 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
520 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
521 return PIPE_FORMAT_A1R5G5B5_UNORM
;
522 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
528 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
533 if (screen
->is_format_supported( screen
, PIPE_FORMAT_R5G6B5_UNORM
, target
, tex_usage
, geom_flags
))
534 return PIPE_FORMAT_R5G6B5_UNORM
;
535 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
536 return PIPE_FORMAT_A1R5G5B5_UNORM
;
537 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
544 case GL_COMPRESSED_ALPHA
:
545 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8_UNORM
, target
, tex_usage
, geom_flags
))
546 return PIPE_FORMAT_A8_UNORM
;
547 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
555 case GL_COMPRESSED_LUMINANCE
:
556 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_UNORM
, target
, tex_usage
, geom_flags
))
557 return PIPE_FORMAT_L8_UNORM
;
558 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
561 case GL_LUMINANCE_ALPHA
:
562 case GL_LUMINANCE4_ALPHA4
:
563 case GL_LUMINANCE6_ALPHA2
:
564 case GL_LUMINANCE8_ALPHA8
:
565 case GL_LUMINANCE12_ALPHA4
:
566 case GL_LUMINANCE12_ALPHA12
:
567 case GL_LUMINANCE16_ALPHA16
:
568 case GL_COMPRESSED_LUMINANCE_ALPHA
:
569 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_UNORM
, target
, tex_usage
, geom_flags
))
570 return PIPE_FORMAT_A8L8_UNORM
;
571 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
578 case GL_COMPRESSED_INTENSITY
:
579 if (screen
->is_format_supported( screen
, PIPE_FORMAT_I8_UNORM
, target
, tex_usage
, geom_flags
))
580 return PIPE_FORMAT_I8_UNORM
;
581 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
584 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
585 target
, tex_usage
, geom_flags
)) {
586 return PIPE_FORMAT_YCBCR
;
588 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
589 target
, tex_usage
, geom_flags
)) {
590 return PIPE_FORMAT_YCBCR_REV
;
592 return PIPE_FORMAT_NONE
;
596 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
597 return PIPE_FORMAT_DXT1_RGB
;
599 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
600 return PIPE_FORMAT_DXT1_RGBA
;
604 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
605 return PIPE_FORMAT_DXT3_RGBA
;
607 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
608 return PIPE_FORMAT_DXT5_RGBA
;
611 case GL_COMPRESSED_RGB_FXT1_3DFX
:
612 return PIPE_FORMAT_RGB_FXT1
;
613 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
614 return PIPE_FORMAT_RGB_FXT1
;
617 case GL_DEPTH_COMPONENT16
:
618 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, target
, tex_usage
, geom_flags
))
619 return PIPE_FORMAT_Z16_UNORM
;
621 case GL_DEPTH_COMPONENT24
:
622 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
623 return PIPE_FORMAT_S8Z24_UNORM
;
624 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
625 return PIPE_FORMAT_Z24S8_UNORM
;
627 case GL_DEPTH_COMPONENT32
:
628 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, target
, tex_usage
, geom_flags
))
629 return PIPE_FORMAT_Z32_UNORM
;
631 case GL_DEPTH_COMPONENT
:
632 return default_depth_format( screen
, target
, tex_usage
, geom_flags
);
634 case GL_STENCIL_INDEX
:
635 case GL_STENCIL_INDEX1_EXT
:
636 case GL_STENCIL_INDEX4_EXT
:
637 case GL_STENCIL_INDEX8_EXT
:
638 case GL_STENCIL_INDEX16_EXT
:
639 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_UNORM
, target
, tex_usage
, geom_flags
))
640 return PIPE_FORMAT_S8_UNORM
;
641 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
642 return PIPE_FORMAT_S8Z24_UNORM
;
643 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
644 return PIPE_FORMAT_Z24S8_UNORM
;
645 return PIPE_FORMAT_NONE
;
647 case GL_DEPTH_STENCIL_EXT
:
648 case GL_DEPTH24_STENCIL8_EXT
:
649 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
650 return PIPE_FORMAT_S8Z24_UNORM
;
651 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
652 return PIPE_FORMAT_Z24S8_UNORM
;
653 return PIPE_FORMAT_NONE
;
657 case GL_COMPRESSED_SRGB_EXT
:
658 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
659 case GL_SRGB_ALPHA_EXT
:
660 case GL_SRGB8_ALPHA8_EXT
:
661 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
662 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
663 return PIPE_FORMAT_DXT1_SRGB
;
664 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
665 return PIPE_FORMAT_DXT1_SRGBA
;
666 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
667 return PIPE_FORMAT_DXT3_SRGBA
;
668 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
669 return PIPE_FORMAT_DXT5_SRGBA
;
671 case GL_SLUMINANCE_ALPHA_EXT
:
672 case GL_SLUMINANCE8_ALPHA8_EXT
:
673 case GL_COMPRESSED_SLUMINANCE_EXT
:
674 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
675 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_SRGB
, target
, tex_usage
, geom_flags
))
676 return PIPE_FORMAT_A8L8_SRGB
;
677 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
679 case GL_SLUMINANCE_EXT
:
680 case GL_SLUMINANCE8_EXT
:
681 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_SRGB
, target
, tex_usage
, geom_flags
))
682 return PIPE_FORMAT_L8_SRGB
;
683 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
686 return PIPE_FORMAT_NONE
;
692 is_depth_or_stencil_format(GLenum internalFormat
)
694 switch (internalFormat
) {
695 case GL_DEPTH_COMPONENT
:
696 case GL_DEPTH_COMPONENT16
:
697 case GL_DEPTH_COMPONENT24
:
698 case GL_DEPTH_COMPONENT32
:
699 case GL_STENCIL_INDEX
:
700 case GL_STENCIL_INDEX1_EXT
:
701 case GL_STENCIL_INDEX4_EXT
:
702 case GL_STENCIL_INDEX8_EXT
:
703 case GL_STENCIL_INDEX16_EXT
:
704 case GL_DEPTH_STENCIL_EXT
:
705 case GL_DEPTH24_STENCIL8_EXT
:
713 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
716 st_choose_renderbuffer_format(struct pipe_screen
*screen
,
717 GLenum internalFormat
)
720 if (is_depth_or_stencil_format(internalFormat
))
721 usage
= PIPE_TEXTURE_USAGE_DEPTH_STENCIL
;
723 usage
= PIPE_TEXTURE_USAGE_RENDER_TARGET
;
724 return st_choose_format(screen
, internalFormat
, PIPE_TEXTURE_2D
, usage
);
729 translate_gallium_format_to_mesa_format(enum pipe_format format
)
732 case PIPE_FORMAT_A8R8G8B8_UNORM
:
733 return MESA_FORMAT_ARGB8888
;
734 case PIPE_FORMAT_X8R8G8B8_UNORM
:
735 return MESA_FORMAT_XRGB8888
;
736 case PIPE_FORMAT_A1R5G5B5_UNORM
:
737 return MESA_FORMAT_ARGB1555
;
738 case PIPE_FORMAT_A4R4G4B4_UNORM
:
739 return MESA_FORMAT_ARGB4444
;
740 case PIPE_FORMAT_R5G6B5_UNORM
:
741 return MESA_FORMAT_RGB565
;
742 case PIPE_FORMAT_A8L8_UNORM
:
743 return MESA_FORMAT_AL88
;
744 case PIPE_FORMAT_A8_UNORM
:
745 return MESA_FORMAT_A8
;
746 case PIPE_FORMAT_L8_UNORM
:
747 return MESA_FORMAT_L8
;
748 case PIPE_FORMAT_I8_UNORM
:
749 return MESA_FORMAT_I8
;
750 case PIPE_FORMAT_Z16_UNORM
:
751 return MESA_FORMAT_Z16
;
752 case PIPE_FORMAT_Z32_UNORM
:
753 return MESA_FORMAT_Z32
;
754 case PIPE_FORMAT_Z24S8_UNORM
:
755 return MESA_FORMAT_Z24_S8
;
756 case PIPE_FORMAT_X8Z24_UNORM
:
757 return MESA_FORMAT_X8_Z24
;
758 case PIPE_FORMAT_S8Z24_UNORM
:
759 return MESA_FORMAT_S8_Z24
;
760 case PIPE_FORMAT_YCBCR
:
761 return MESA_FORMAT_YCBCR
;
762 case PIPE_FORMAT_YCBCR_REV
:
763 return MESA_FORMAT_YCBCR_REV
;
764 #if FEATURE_texture_s3tc
765 case PIPE_FORMAT_DXT1_RGB
:
766 return MESA_FORMAT_RGB_DXT1
;
767 case PIPE_FORMAT_DXT1_RGBA
:
768 return MESA_FORMAT_RGBA_DXT1
;
769 case PIPE_FORMAT_DXT3_RGBA
:
770 return MESA_FORMAT_RGBA_DXT3
;
771 case PIPE_FORMAT_DXT5_RGBA
:
772 return MESA_FORMAT_RGBA_DXT5
;
773 #if FEATURE_EXT_texture_sRGB
774 case PIPE_FORMAT_DXT1_SRGB
:
775 return MESA_FORMAT_SRGB_DXT1
;
776 case PIPE_FORMAT_DXT1_SRGBA
:
777 return MESA_FORMAT_SRGBA_DXT1
;
778 case PIPE_FORMAT_DXT3_SRGBA
:
779 return MESA_FORMAT_SRGBA_DXT3
;
780 case PIPE_FORMAT_DXT5_SRGBA
:
781 return MESA_FORMAT_SRGBA_DXT5
;
784 #if FEATURE_EXT_texture_sRGB
785 case PIPE_FORMAT_A8L8_SRGB
:
786 return MESA_FORMAT_SLA8
;
787 case PIPE_FORMAT_L8_SRGB
:
788 return MESA_FORMAT_SL8
;
789 case PIPE_FORMAT_R8G8B8_SRGB
:
790 return MESA_FORMAT_SRGB8
;
791 case PIPE_FORMAT_R8G8B8A8_SRGB
:
792 return MESA_FORMAT_SRGBA8
;
793 case PIPE_FORMAT_A8R8G8B8_SRGB
:
794 return MESA_FORMAT_SARGB8
;
796 /* XXX add additional cases */
799 return MESA_FORMAT_NONE
;
805 * Called via ctx->Driver.chooseTextureFormat().
808 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
809 GLenum format
, GLenum type
)
811 enum pipe_format pFormat
;
816 pFormat
= st_choose_format(ctx
->st
->pipe
->screen
, internalFormat
,
817 PIPE_TEXTURE_2D
, PIPE_TEXTURE_USAGE_SAMPLER
);
818 if (pFormat
== PIPE_FORMAT_NONE
)
819 return MESA_FORMAT_NONE
;
821 return translate_gallium_format_to_mesa_format(pFormat
);
826 * Test if a gallium format is equivalent to a GL format/type.
829 st_equal_formats(enum pipe_format pFormat
, GLenum format
, GLenum type
)
832 case PIPE_FORMAT_R8G8B8A8_UNORM
:
833 return format
== GL_RGBA
&& type
== GL_UNSIGNED_BYTE
;
834 case PIPE_FORMAT_B8G8R8A8_UNORM
:
835 return format
== GL_BGRA
&& type
== GL_UNSIGNED_BYTE
;
836 case PIPE_FORMAT_R5G6B5_UNORM
:
837 return format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
;
838 /* XXX more combos... */