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/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));
63 format_size(enum pipe_format format
)
66 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 0) +
67 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 1) +
68 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 2) +
69 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_RGB
, 3) +
70 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0) +
71 util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1);
78 st_get_format_info(enum pipe_format format
, struct pipe_format_info
*pinfo
)
80 const struct util_format_description
*desc
;
82 desc
= util_format_description(format
);
85 if (desc
->layout
== UTIL_FORMAT_LAYOUT_ARITH
||
86 desc
->layout
== UTIL_FORMAT_LAYOUT_ARRAY
) {
88 printf("%s\n", pf_name( format
) );
92 if (format
== PIPE_FORMAT_A1R5G5B5_UNORM
|| format
== PIPE_FORMAT_R5G6B5_UNORM
) {
93 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
95 else if (format
== PIPE_FORMAT_S8Z24_UNORM
||
96 format
== PIPE_FORMAT_Z24S8_UNORM
) {
97 pinfo
->datatype
= GL_UNSIGNED_INT_24_8
;
100 const GLuint size
= format_max_bits(format
);
102 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
103 pinfo
->datatype
= GL_UNSIGNED_BYTE
;
105 pinfo
->datatype
= GL_BYTE
;
107 else if (size
== 16) {
108 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_UNSIGNED
)
109 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
111 pinfo
->datatype
= GL_SHORT
;
114 assert( size
<= 32 );
115 if (desc
->channel
[0].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_B8G8R8A8_UNORM
:
289 return MESA_FORMAT_ARGB8888_REV
;
290 case PIPE_FORMAT_B8G8R8X8_UNORM
:
291 return MESA_FORMAT_XRGB8888_REV
;
292 case PIPE_FORMAT_A1R5G5B5_UNORM
:
293 return MESA_FORMAT_ARGB1555
;
294 case PIPE_FORMAT_A4R4G4B4_UNORM
:
295 return MESA_FORMAT_ARGB4444
;
296 case PIPE_FORMAT_R5G6B5_UNORM
:
297 return MESA_FORMAT_RGB565
;
298 case PIPE_FORMAT_A8L8_UNORM
:
299 return MESA_FORMAT_AL88
;
300 case PIPE_FORMAT_A8_UNORM
:
301 return MESA_FORMAT_A8
;
302 case PIPE_FORMAT_L8_UNORM
:
303 return MESA_FORMAT_L8
;
304 case PIPE_FORMAT_I8_UNORM
:
305 return MESA_FORMAT_I8
;
306 case PIPE_FORMAT_Z16_UNORM
:
307 return MESA_FORMAT_Z16
;
308 case PIPE_FORMAT_Z32_UNORM
:
309 return MESA_FORMAT_Z32
;
310 case PIPE_FORMAT_Z24X8_UNORM
:
311 return MESA_FORMAT_Z24_X8
;
312 case PIPE_FORMAT_Z24S8_UNORM
:
313 return MESA_FORMAT_Z24_S8
;
314 case PIPE_FORMAT_X8Z24_UNORM
:
315 return MESA_FORMAT_X8_Z24
;
316 case PIPE_FORMAT_S8Z24_UNORM
:
317 return MESA_FORMAT_S8_Z24
;
318 case PIPE_FORMAT_S8_UNORM
:
319 return MESA_FORMAT_S8
;
321 case PIPE_FORMAT_YCBCR
:
322 return MESA_FORMAT_YCBCR
;
323 case PIPE_FORMAT_R16G16B16A16_SNORM
:
324 return MESA_FORMAT_SIGNED_RGBA_16
;
326 #if FEATURE_texture_s3tc
327 case PIPE_FORMAT_DXT1_RGB
:
328 return MESA_FORMAT_RGB_DXT1
;
329 case PIPE_FORMAT_DXT1_RGBA
:
330 return MESA_FORMAT_RGBA_DXT1
;
331 case PIPE_FORMAT_DXT3_RGBA
:
332 return MESA_FORMAT_RGBA_DXT3
;
333 case PIPE_FORMAT_DXT5_RGBA
:
334 return MESA_FORMAT_RGBA_DXT5
;
335 #if FEATURE_EXT_texture_sRGB
336 case PIPE_FORMAT_DXT1_SRGB
:
337 return MESA_FORMAT_SRGB_DXT1
;
338 case PIPE_FORMAT_DXT1_SRGBA
:
339 return MESA_FORMAT_SRGBA_DXT1
;
340 case PIPE_FORMAT_DXT3_SRGBA
:
341 return MESA_FORMAT_SRGBA_DXT3
;
342 case PIPE_FORMAT_DXT5_SRGBA
:
343 return MESA_FORMAT_SRGBA_DXT5
;
346 #if FEATURE_EXT_texture_sRGB
347 case PIPE_FORMAT_A8L8_SRGB
:
348 return MESA_FORMAT_SLA8
;
349 case PIPE_FORMAT_L8_SRGB
:
350 return MESA_FORMAT_SL8
;
351 case PIPE_FORMAT_R8G8B8_SRGB
:
352 return MESA_FORMAT_SRGB8
;
353 case PIPE_FORMAT_R8G8B8A8_SRGB
:
354 return MESA_FORMAT_SRGBA8
;
355 case PIPE_FORMAT_A8R8G8B8_SRGB
:
356 return MESA_FORMAT_SARGB8
;
366 * Find an RGBA format supported by the context/winsys.
368 static enum pipe_format
369 default_rgba_format(struct pipe_screen
*screen
,
370 enum pipe_texture_target target
,
374 static const enum pipe_format colorFormats
[] = {
375 PIPE_FORMAT_A8R8G8B8_UNORM
,
376 PIPE_FORMAT_B8G8R8A8_UNORM
,
377 PIPE_FORMAT_R8G8B8A8_UNORM
,
378 PIPE_FORMAT_R5G6B5_UNORM
381 for (i
= 0; i
< Elements(colorFormats
); i
++) {
382 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
383 return colorFormats
[i
];
386 return PIPE_FORMAT_NONE
;
390 * Find an RGB format supported by the context/winsys.
392 static enum pipe_format
393 default_rgb_format(struct pipe_screen
*screen
,
394 enum pipe_texture_target target
,
398 static const enum pipe_format colorFormats
[] = {
399 PIPE_FORMAT_X8R8G8B8_UNORM
,
400 PIPE_FORMAT_B8G8R8X8_UNORM
,
401 PIPE_FORMAT_R8G8B8X8_UNORM
,
402 PIPE_FORMAT_A8R8G8B8_UNORM
,
403 PIPE_FORMAT_B8G8R8A8_UNORM
,
404 PIPE_FORMAT_R8G8B8A8_UNORM
,
405 PIPE_FORMAT_R5G6B5_UNORM
408 for (i
= 0; i
< Elements(colorFormats
); i
++) {
409 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
410 return colorFormats
[i
];
413 return PIPE_FORMAT_NONE
;
417 * Find an sRGBA format supported by the context/winsys.
419 static enum pipe_format
420 default_srgba_format(struct pipe_screen
*screen
,
421 enum pipe_texture_target target
,
425 static const enum pipe_format colorFormats
[] = {
426 PIPE_FORMAT_A8R8G8B8_SRGB
,
427 PIPE_FORMAT_B8G8R8A8_SRGB
,
428 PIPE_FORMAT_R8G8B8A8_SRGB
,
431 for (i
= 0; i
< Elements(colorFormats
); i
++) {
432 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
433 return colorFormats
[i
];
436 return PIPE_FORMAT_NONE
;
440 * Search list of formats for first RGBA format with >8 bits/channel.
442 static enum pipe_format
443 default_deep_rgba_format(struct pipe_screen
*screen
,
444 enum pipe_texture_target target
,
448 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, target
, tex_usage
, geom_flags
)) {
449 return PIPE_FORMAT_R16G16B16A16_SNORM
;
451 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
452 return default_rgba_format(screen
, target
, tex_usage
, geom_flags
);
454 return PIPE_FORMAT_NONE
;
459 * Find an Z format supported by the context/winsys.
461 static enum pipe_format
462 default_depth_format(struct pipe_screen
*screen
,
463 enum pipe_texture_target target
,
467 static const enum pipe_format zFormats
[] = {
468 PIPE_FORMAT_Z16_UNORM
,
469 PIPE_FORMAT_Z32_UNORM
,
470 PIPE_FORMAT_S8Z24_UNORM
,
471 PIPE_FORMAT_Z24S8_UNORM
474 for (i
= 0; i
< Elements(zFormats
); i
++) {
475 if (screen
->is_format_supported( screen
, zFormats
[i
], target
, tex_usage
, geom_flags
)) {
479 return PIPE_FORMAT_NONE
;
484 * Given an OpenGL internalFormat value for a texture or surface, return
485 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
486 * \param target one of PIPE_TEXTURE_x
487 * \param tex_usage either PIPE_TEXTURE_USAGE_RENDER_TARGET
488 * or PIPE_TEXTURE_USAGE_SAMPLER
491 st_choose_format(struct pipe_screen
*screen
, GLenum internalFormat
,
492 enum pipe_texture_target target
, unsigned tex_usage
)
494 unsigned geom_flags
= 0;
496 switch (internalFormat
) {
499 case GL_COMPRESSED_RGBA
:
503 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
506 case GL_COMPRESSED_RGB
:
507 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
509 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
510 return default_deep_rgba_format( screen
, target
, tex_usage
, geom_flags
);
512 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
516 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A4R4G4B4_UNORM
, target
, tex_usage
, geom_flags
))
517 return PIPE_FORMAT_A4R4G4B4_UNORM
;
518 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
521 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
522 return PIPE_FORMAT_A1R5G5B5_UNORM
;
523 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
529 return default_rgb_format( screen
, target
, tex_usage
, geom_flags
);
534 if (screen
->is_format_supported( screen
, PIPE_FORMAT_R5G6B5_UNORM
, target
, tex_usage
, geom_flags
))
535 return PIPE_FORMAT_R5G6B5_UNORM
;
536 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
537 return PIPE_FORMAT_A1R5G5B5_UNORM
;
538 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
545 case GL_COMPRESSED_ALPHA
:
546 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8_UNORM
, target
, tex_usage
, geom_flags
))
547 return PIPE_FORMAT_A8_UNORM
;
548 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
556 case GL_COMPRESSED_LUMINANCE
:
557 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_UNORM
, target
, tex_usage
, geom_flags
))
558 return PIPE_FORMAT_L8_UNORM
;
559 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
562 case GL_LUMINANCE_ALPHA
:
563 case GL_LUMINANCE4_ALPHA4
:
564 case GL_LUMINANCE6_ALPHA2
:
565 case GL_LUMINANCE8_ALPHA8
:
566 case GL_LUMINANCE12_ALPHA4
:
567 case GL_LUMINANCE12_ALPHA12
:
568 case GL_LUMINANCE16_ALPHA16
:
569 case GL_COMPRESSED_LUMINANCE_ALPHA
:
570 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_UNORM
, target
, tex_usage
, geom_flags
))
571 return PIPE_FORMAT_A8L8_UNORM
;
572 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
579 case GL_COMPRESSED_INTENSITY
:
580 if (screen
->is_format_supported( screen
, PIPE_FORMAT_I8_UNORM
, target
, tex_usage
, geom_flags
))
581 return PIPE_FORMAT_I8_UNORM
;
582 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
585 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
586 target
, tex_usage
, geom_flags
)) {
587 return PIPE_FORMAT_YCBCR
;
589 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
590 target
, tex_usage
, geom_flags
)) {
591 return PIPE_FORMAT_YCBCR_REV
;
593 return PIPE_FORMAT_NONE
;
597 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
598 return PIPE_FORMAT_DXT1_RGB
;
600 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
601 return PIPE_FORMAT_DXT1_RGBA
;
605 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
606 return PIPE_FORMAT_DXT3_RGBA
;
608 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
609 return PIPE_FORMAT_DXT5_RGBA
;
612 case GL_COMPRESSED_RGB_FXT1_3DFX
:
613 return PIPE_FORMAT_RGB_FXT1
;
614 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
615 return PIPE_FORMAT_RGB_FXT1
;
618 case GL_DEPTH_COMPONENT16
:
619 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, target
, tex_usage
, geom_flags
))
620 return PIPE_FORMAT_Z16_UNORM
;
622 case GL_DEPTH_COMPONENT24
:
623 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
624 return PIPE_FORMAT_S8Z24_UNORM
;
625 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
626 return PIPE_FORMAT_Z24S8_UNORM
;
628 case GL_DEPTH_COMPONENT32
:
629 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, target
, tex_usage
, geom_flags
))
630 return PIPE_FORMAT_Z32_UNORM
;
632 case GL_DEPTH_COMPONENT
:
633 return default_depth_format( screen
, target
, tex_usage
, geom_flags
);
635 case GL_STENCIL_INDEX
:
636 case GL_STENCIL_INDEX1_EXT
:
637 case GL_STENCIL_INDEX4_EXT
:
638 case GL_STENCIL_INDEX8_EXT
:
639 case GL_STENCIL_INDEX16_EXT
:
640 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_UNORM
, target
, tex_usage
, geom_flags
))
641 return PIPE_FORMAT_S8_UNORM
;
642 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
643 return PIPE_FORMAT_S8Z24_UNORM
;
644 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
645 return PIPE_FORMAT_Z24S8_UNORM
;
646 return PIPE_FORMAT_NONE
;
648 case GL_DEPTH_STENCIL_EXT
:
649 case GL_DEPTH24_STENCIL8_EXT
:
650 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
651 return PIPE_FORMAT_S8Z24_UNORM
;
652 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
653 return PIPE_FORMAT_Z24S8_UNORM
;
654 return PIPE_FORMAT_NONE
;
658 case GL_COMPRESSED_SRGB_EXT
:
659 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
660 case GL_SRGB_ALPHA_EXT
:
661 case GL_SRGB8_ALPHA8_EXT
:
662 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
663 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
664 return PIPE_FORMAT_DXT1_SRGB
;
665 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
666 return PIPE_FORMAT_DXT1_SRGBA
;
667 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
668 return PIPE_FORMAT_DXT3_SRGBA
;
669 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
670 return PIPE_FORMAT_DXT5_SRGBA
;
672 case GL_SLUMINANCE_ALPHA_EXT
:
673 case GL_SLUMINANCE8_ALPHA8_EXT
:
674 case GL_COMPRESSED_SLUMINANCE_EXT
:
675 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
676 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_SRGB
, target
, tex_usage
, geom_flags
))
677 return PIPE_FORMAT_A8L8_SRGB
;
678 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
680 case GL_SLUMINANCE_EXT
:
681 case GL_SLUMINANCE8_EXT
:
682 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_SRGB
, target
, tex_usage
, geom_flags
))
683 return PIPE_FORMAT_L8_SRGB
;
684 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
687 return PIPE_FORMAT_NONE
;
693 is_depth_or_stencil_format(GLenum internalFormat
)
695 switch (internalFormat
) {
696 case GL_DEPTH_COMPONENT
:
697 case GL_DEPTH_COMPONENT16
:
698 case GL_DEPTH_COMPONENT24
:
699 case GL_DEPTH_COMPONENT32
:
700 case GL_STENCIL_INDEX
:
701 case GL_STENCIL_INDEX1_EXT
:
702 case GL_STENCIL_INDEX4_EXT
:
703 case GL_STENCIL_INDEX8_EXT
:
704 case GL_STENCIL_INDEX16_EXT
:
705 case GL_DEPTH_STENCIL_EXT
:
706 case GL_DEPTH24_STENCIL8_EXT
:
714 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
717 st_choose_renderbuffer_format(struct pipe_screen
*screen
,
718 GLenum internalFormat
)
721 if (is_depth_or_stencil_format(internalFormat
))
722 usage
= PIPE_TEXTURE_USAGE_DEPTH_STENCIL
;
724 usage
= PIPE_TEXTURE_USAGE_RENDER_TARGET
;
725 return st_choose_format(screen
, internalFormat
, PIPE_TEXTURE_2D
, usage
);
730 translate_gallium_format_to_mesa_format(enum pipe_format format
)
733 case PIPE_FORMAT_A8R8G8B8_UNORM
:
734 return MESA_FORMAT_ARGB8888
;
735 case PIPE_FORMAT_X8R8G8B8_UNORM
:
736 return MESA_FORMAT_XRGB8888
;
737 case PIPE_FORMAT_A1R5G5B5_UNORM
:
738 return MESA_FORMAT_ARGB1555
;
739 case PIPE_FORMAT_A4R4G4B4_UNORM
:
740 return MESA_FORMAT_ARGB4444
;
741 case PIPE_FORMAT_R5G6B5_UNORM
:
742 return MESA_FORMAT_RGB565
;
743 case PIPE_FORMAT_A8L8_UNORM
:
744 return MESA_FORMAT_AL88
;
745 case PIPE_FORMAT_A8_UNORM
:
746 return MESA_FORMAT_A8
;
747 case PIPE_FORMAT_L8_UNORM
:
748 return MESA_FORMAT_L8
;
749 case PIPE_FORMAT_I8_UNORM
:
750 return MESA_FORMAT_I8
;
751 case PIPE_FORMAT_Z16_UNORM
:
752 return MESA_FORMAT_Z16
;
753 case PIPE_FORMAT_Z32_UNORM
:
754 return MESA_FORMAT_Z32
;
755 case PIPE_FORMAT_Z24S8_UNORM
:
756 return MESA_FORMAT_Z24_S8
;
757 case PIPE_FORMAT_X8Z24_UNORM
:
758 return MESA_FORMAT_X8_Z24
;
759 case PIPE_FORMAT_S8Z24_UNORM
:
760 return MESA_FORMAT_S8_Z24
;
761 case PIPE_FORMAT_YCBCR
:
762 return MESA_FORMAT_YCBCR
;
763 case PIPE_FORMAT_YCBCR_REV
:
764 return MESA_FORMAT_YCBCR_REV
;
765 #if FEATURE_texture_s3tc
766 case PIPE_FORMAT_DXT1_RGB
:
767 return MESA_FORMAT_RGB_DXT1
;
768 case PIPE_FORMAT_DXT1_RGBA
:
769 return MESA_FORMAT_RGBA_DXT1
;
770 case PIPE_FORMAT_DXT3_RGBA
:
771 return MESA_FORMAT_RGBA_DXT3
;
772 case PIPE_FORMAT_DXT5_RGBA
:
773 return MESA_FORMAT_RGBA_DXT5
;
774 #if FEATURE_EXT_texture_sRGB
775 case PIPE_FORMAT_DXT1_SRGB
:
776 return MESA_FORMAT_SRGB_DXT1
;
777 case PIPE_FORMAT_DXT1_SRGBA
:
778 return MESA_FORMAT_SRGBA_DXT1
;
779 case PIPE_FORMAT_DXT3_SRGBA
:
780 return MESA_FORMAT_SRGBA_DXT3
;
781 case PIPE_FORMAT_DXT5_SRGBA
:
782 return MESA_FORMAT_SRGBA_DXT5
;
785 #if FEATURE_EXT_texture_sRGB
786 case PIPE_FORMAT_A8L8_SRGB
:
787 return MESA_FORMAT_SLA8
;
788 case PIPE_FORMAT_L8_SRGB
:
789 return MESA_FORMAT_SL8
;
790 case PIPE_FORMAT_R8G8B8_SRGB
:
791 return MESA_FORMAT_SRGB8
;
792 case PIPE_FORMAT_R8G8B8A8_SRGB
:
793 return MESA_FORMAT_SRGBA8
;
794 case PIPE_FORMAT_A8R8G8B8_SRGB
:
795 return MESA_FORMAT_SARGB8
;
797 /* XXX add additional cases */
800 return MESA_FORMAT_NONE
;
806 * Called via ctx->Driver.chooseTextureFormat().
809 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
810 GLenum format
, GLenum type
)
812 enum pipe_format pFormat
;
817 pFormat
= st_choose_format(ctx
->st
->pipe
->screen
, internalFormat
,
818 PIPE_TEXTURE_2D
, PIPE_TEXTURE_USAGE_SAMPLER
);
819 if (pFormat
== PIPE_FORMAT_NONE
)
820 return MESA_FORMAT_NONE
;
822 return translate_gallium_format_to_mesa_format(pFormat
);
827 * Test if a gallium format is equivalent to a GL format/type.
830 st_equal_formats(enum pipe_format pFormat
, GLenum format
, GLenum type
)
833 case PIPE_FORMAT_R8G8B8A8_UNORM
:
834 return format
== GL_RGBA
&& type
== GL_UNSIGNED_BYTE
;
835 case PIPE_FORMAT_B8G8R8A8_UNORM
:
836 return format
== GL_BGRA
&& type
== GL_UNSIGNED_BYTE
;
837 case PIPE_FORMAT_R5G6B5_UNORM
:
838 return format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
;
839 /* XXX more combos... */