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 "st_context.h"
46 #include "st_format.h"
50 pipe_format_rgbazs_t info
,
53 return pf_get_component_bits( (enum pipe_format
) info
, comp
);
58 pipe_format_rgbazs_t info
)
60 GLuint size
= format_bits( info
, PIPE_FORMAT_COMP_R
);
62 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_G
) );
63 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_B
) );
64 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_A
) );
65 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_Z
) );
66 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_S
) );
72 pipe_format_rgbazs_t info
)
75 format_bits( info
, PIPE_FORMAT_COMP_R
) +
76 format_bits( info
, PIPE_FORMAT_COMP_G
) +
77 format_bits( info
, PIPE_FORMAT_COMP_B
) +
78 format_bits( info
, PIPE_FORMAT_COMP_A
) +
79 format_bits( info
, PIPE_FORMAT_COMP_Z
) +
80 format_bits( info
, PIPE_FORMAT_COMP_S
);
87 st_get_format_info(enum pipe_format format
, struct pipe_format_info
*pinfo
)
89 if (pf_layout(format
) == PIPE_FORMAT_LAYOUT_RGBAZS
) {
90 pipe_format_rgbazs_t info
;
95 printf("%s\n", pf_name( format
) );
99 if (format
== PIPE_FORMAT_A1R5G5B5_UNORM
|| format
== PIPE_FORMAT_R5G6B5_UNORM
) {
100 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
102 else if (format
== PIPE_FORMAT_S8Z24_UNORM
) {
103 pinfo
->datatype
= GL_UNSIGNED_INT_24_8
;
106 const GLuint size
= format_max_bits( info
);
108 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
109 pinfo
->datatype
= GL_UNSIGNED_BYTE
;
111 pinfo
->datatype
= GL_BYTE
;
113 else if (size
== 16) {
114 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
115 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
117 pinfo
->datatype
= GL_SHORT
;
120 assert( size
<= 32 );
121 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
122 pinfo
->datatype
= GL_UNSIGNED_INT
;
124 pinfo
->datatype
= GL_INT
;
129 pinfo
->red_bits
= format_bits( info
, PIPE_FORMAT_COMP_R
);
130 pinfo
->green_bits
= format_bits( info
, PIPE_FORMAT_COMP_G
);
131 pinfo
->blue_bits
= format_bits( info
, PIPE_FORMAT_COMP_B
);
132 pinfo
->alpha_bits
= format_bits( info
, PIPE_FORMAT_COMP_A
);
133 pinfo
->depth_bits
= format_bits( info
, PIPE_FORMAT_COMP_Z
);
134 pinfo
->stencil_bits
= format_bits( info
, PIPE_FORMAT_COMP_S
);
135 pinfo
->luminance_bits
= 0;
136 pinfo
->intensity_bits
= 0;
139 pinfo
->size
= format_size( info
) / 8;
141 /* Luminance & Intensity bits */
142 if( pf_swizzle_x(info
) == PIPE_FORMAT_COMP_R
&&
143 pf_swizzle_y(info
) == PIPE_FORMAT_COMP_R
&&
144 pf_swizzle_z(info
) == PIPE_FORMAT_COMP_R
) {
145 if( pf_swizzle_w(info
) == PIPE_FORMAT_COMP_R
) {
146 pinfo
->intensity_bits
= pinfo
->red_bits
;
149 pinfo
->luminance_bits
= pinfo
->red_bits
;
154 pinfo
->mesa_format
= st_pipe_format_to_mesa_format(format
);
156 else if (pf_layout(format
) == PIPE_FORMAT_LAYOUT_YCBCR
) {
157 pinfo
->mesa_format
= MESA_FORMAT_YCBCR
;
158 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
159 pinfo
->size
= 2; /* two bytes per "texel" */
162 /* compressed format? */
168 "ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n",
174 pinfo
->stencil_bits
);
177 pinfo
->format
= format
;
184 * Return bytes per pixel for the given format.
187 st_sizeof_format(enum pipe_format format
)
189 struct pipe_format_info info
;
190 if (!st_get_format_info( format
, &info
)) {
199 * Return bytes per pixel for the given format.
202 st_format_datatype(enum pipe_format format
)
204 struct pipe_format_info info
;
205 if (!st_get_format_info( format
, &info
)) {
209 return info
.datatype
;
214 st_mesa_format_to_pipe_format(gl_format mesaFormat
)
216 switch (mesaFormat
) {
218 case MESA_FORMAT_ARGB8888_REV
:
219 case MESA_FORMAT_ARGB8888
:
220 return PIPE_FORMAT_A8R8G8B8_UNORM
;
221 case MESA_FORMAT_XRGB8888
:
222 return PIPE_FORMAT_X8R8G8B8_UNORM
;
223 case MESA_FORMAT_ARGB1555
:
224 return PIPE_FORMAT_A1R5G5B5_UNORM
;
225 case MESA_FORMAT_ARGB4444
:
226 return PIPE_FORMAT_A4R4G4B4_UNORM
;
227 case MESA_FORMAT_RGB565
:
228 return PIPE_FORMAT_R5G6B5_UNORM
;
229 case MESA_FORMAT_AL88
:
230 return PIPE_FORMAT_A8L8_UNORM
;
232 return PIPE_FORMAT_A8_UNORM
;
234 return PIPE_FORMAT_L8_UNORM
;
236 return PIPE_FORMAT_I8_UNORM
;
237 case MESA_FORMAT_Z16
:
238 return PIPE_FORMAT_Z16_UNORM
;
239 case MESA_FORMAT_Z32
:
240 return PIPE_FORMAT_Z32_UNORM
;
241 case MESA_FORMAT_Z24_S8
:
242 return PIPE_FORMAT_Z24S8_UNORM
;
243 case MESA_FORMAT_S8_Z24
:
244 return PIPE_FORMAT_S8Z24_UNORM
;
245 case MESA_FORMAT_YCBCR
:
246 return PIPE_FORMAT_YCBCR
;
247 #if FEATURE_texture_s3tc
248 case MESA_FORMAT_RGB_DXT1
:
249 return PIPE_FORMAT_DXT1_RGB
;
250 case MESA_FORMAT_RGBA_DXT1
:
251 return PIPE_FORMAT_DXT1_RGBA
;
252 case MESA_FORMAT_RGBA_DXT3
:
253 return PIPE_FORMAT_DXT3_RGBA
;
254 case MESA_FORMAT_RGBA_DXT5
:
255 return PIPE_FORMAT_DXT5_RGBA
;
256 #if FEATURE_EXT_texture_sRGB
257 case MESA_FORMAT_SRGB_DXT1
:
258 return PIPE_FORMAT_DXT1_SRGB
;
259 case MESA_FORMAT_SRGBA_DXT1
:
260 return PIPE_FORMAT_DXT1_SRGBA
;
261 case MESA_FORMAT_SRGBA_DXT3
:
262 return PIPE_FORMAT_DXT3_SRGBA
;
263 case MESA_FORMAT_SRGBA_DXT5
:
264 return PIPE_FORMAT_DXT5_SRGBA
;
267 #if FEATURE_EXT_texture_sRGB
268 case MESA_FORMAT_SLA8
:
269 return PIPE_FORMAT_A8L8_SRGB
;
270 case MESA_FORMAT_SL8
:
271 return PIPE_FORMAT_L8_SRGB
;
272 case MESA_FORMAT_SRGB8
:
273 return PIPE_FORMAT_R8G8B8_SRGB
;
274 case MESA_FORMAT_SRGBA8
:
275 return PIPE_FORMAT_R8G8B8A8_SRGB
;
276 case MESA_FORMAT_SARGB8
:
277 return PIPE_FORMAT_A8R8G8B8_SRGB
;
287 st_pipe_format_to_mesa_format(enum pipe_format pipeFormat
)
289 switch (pipeFormat
) {
290 case PIPE_FORMAT_A8R8G8B8_UNORM
:
291 return MESA_FORMAT_ARGB8888
;
292 case PIPE_FORMAT_X8R8G8B8_UNORM
:
293 return MESA_FORMAT_XRGB8888
;
294 case PIPE_FORMAT_A1R5G5B5_UNORM
:
295 return MESA_FORMAT_ARGB1555
;
296 case PIPE_FORMAT_A4R4G4B4_UNORM
:
297 return MESA_FORMAT_ARGB4444
;
298 case PIPE_FORMAT_R5G6B5_UNORM
:
299 return MESA_FORMAT_RGB565
;
300 case PIPE_FORMAT_A8L8_UNORM
:
301 return MESA_FORMAT_AL88
;
302 case PIPE_FORMAT_A8_UNORM
:
303 return MESA_FORMAT_A8
;
304 case PIPE_FORMAT_L8_UNORM
:
305 return MESA_FORMAT_L8
;
306 case PIPE_FORMAT_I8_UNORM
:
307 return MESA_FORMAT_I8
;
308 case PIPE_FORMAT_Z16_UNORM
:
309 return MESA_FORMAT_Z16
;
310 case PIPE_FORMAT_Z32_UNORM
:
311 return MESA_FORMAT_Z32
;
312 case PIPE_FORMAT_Z24X8_UNORM
:
313 return MESA_FORMAT_Z24_X8
;
314 case PIPE_FORMAT_Z24S8_UNORM
:
315 return MESA_FORMAT_Z24_S8
;
316 case PIPE_FORMAT_X8Z24_UNORM
:
317 return MESA_FORMAT_X8_Z24
;
318 case PIPE_FORMAT_S8Z24_UNORM
:
319 return MESA_FORMAT_S8_Z24
;
320 case PIPE_FORMAT_S8_UNORM
:
321 return MESA_FORMAT_S8
;
323 case PIPE_FORMAT_YCBCR
:
324 return MESA_FORMAT_YCBCR
;
325 case PIPE_FORMAT_R16G16B16A16_SNORM
:
326 return MESA_FORMAT_SIGNED_RGBA_16
;
328 #if FEATURE_texture_s3tc
329 case PIPE_FORMAT_DXT1_RGB
:
330 return MESA_FORMAT_RGB_DXT1
;
331 case PIPE_FORMAT_DXT1_RGBA
:
332 return MESA_FORMAT_RGBA_DXT1
;
333 case PIPE_FORMAT_DXT3_RGBA
:
334 return MESA_FORMAT_RGBA_DXT3
;
335 case PIPE_FORMAT_DXT5_RGBA
:
336 return MESA_FORMAT_RGBA_DXT5
;
337 #if FEATURE_EXT_texture_sRGB
338 case PIPE_FORMAT_DXT1_SRGB
:
339 return MESA_FORMAT_SRGB_DXT1
;
340 case PIPE_FORMAT_DXT1_SRGBA
:
341 return MESA_FORMAT_SRGBA_DXT1
;
342 case PIPE_FORMAT_DXT3_SRGBA
:
343 return MESA_FORMAT_SRGBA_DXT3
;
344 case PIPE_FORMAT_DXT5_SRGBA
:
345 return MESA_FORMAT_SRGBA_DXT5
;
348 #if FEATURE_EXT_texture_sRGB
349 case PIPE_FORMAT_A8L8_SRGB
:
350 return MESA_FORMAT_SLA8
;
351 case PIPE_FORMAT_L8_SRGB
:
352 return MESA_FORMAT_SL8
;
353 case PIPE_FORMAT_R8G8B8_SRGB
:
354 return MESA_FORMAT_SRGB8
;
355 case PIPE_FORMAT_R8G8B8A8_SRGB
:
356 return MESA_FORMAT_SRGBA8
;
357 case PIPE_FORMAT_A8R8G8B8_SRGB
:
358 return MESA_FORMAT_SARGB8
;
368 * Find an RGBA format supported by the context/winsys.
370 static enum pipe_format
371 default_rgba_format(struct pipe_screen
*screen
,
372 enum pipe_texture_target target
,
376 static const enum pipe_format colorFormats
[] = {
377 PIPE_FORMAT_A8R8G8B8_UNORM
,
378 PIPE_FORMAT_B8G8R8A8_UNORM
,
379 PIPE_FORMAT_R8G8B8A8_UNORM
,
380 PIPE_FORMAT_R5G6B5_UNORM
383 for (i
= 0; i
< Elements(colorFormats
); i
++) {
384 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
385 return colorFormats
[i
];
388 return PIPE_FORMAT_NONE
;
392 * Find an sRGBA format supported by the context/winsys.
394 static enum pipe_format
395 default_srgba_format(struct pipe_screen
*screen
,
396 enum pipe_texture_target target
,
400 static const enum pipe_format colorFormats
[] = {
401 PIPE_FORMAT_A8R8G8B8_SRGB
,
402 PIPE_FORMAT_B8G8R8A8_SRGB
,
403 PIPE_FORMAT_R8G8B8A8_SRGB
,
406 for (i
= 0; i
< Elements(colorFormats
); i
++) {
407 if (screen
->is_format_supported( screen
, colorFormats
[i
], target
, tex_usage
, geom_flags
)) {
408 return colorFormats
[i
];
411 return PIPE_FORMAT_NONE
;
415 * Search list of formats for first RGBA format with >8 bits/channel.
417 static enum pipe_format
418 default_deep_rgba_format(struct pipe_screen
*screen
,
419 enum pipe_texture_target target
,
423 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, target
, tex_usage
, geom_flags
)) {
424 return PIPE_FORMAT_R16G16B16A16_SNORM
;
426 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
427 return default_rgba_format(screen
, target
, tex_usage
, geom_flags
);
429 return PIPE_FORMAT_NONE
;
434 * Find an Z format supported by the context/winsys.
436 static enum pipe_format
437 default_depth_format(struct pipe_screen
*screen
,
438 enum pipe_texture_target target
,
442 static const enum pipe_format zFormats
[] = {
443 PIPE_FORMAT_Z16_UNORM
,
444 PIPE_FORMAT_Z32_UNORM
,
445 PIPE_FORMAT_S8Z24_UNORM
,
446 PIPE_FORMAT_Z24S8_UNORM
449 for (i
= 0; i
< Elements(zFormats
); i
++) {
450 if (screen
->is_format_supported( screen
, zFormats
[i
], target
, tex_usage
, geom_flags
)) {
454 return PIPE_FORMAT_NONE
;
459 * Given an OpenGL internalFormat value for a texture or surface, return
460 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
461 * \param target one of PIPE_TEXTURE_x
462 * \param tex_usage either PIPE_TEXTURE_USAGE_RENDER_TARGET
463 * or PIPE_TEXTURE_USAGE_SAMPLER
466 st_choose_format(struct pipe_screen
*screen
, GLenum internalFormat
,
467 enum pipe_texture_target target
, unsigned tex_usage
)
469 unsigned geom_flags
= 0;
471 switch (internalFormat
) {
474 case GL_COMPRESSED_RGBA
:
477 case GL_COMPRESSED_RGB
:
481 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
483 if (tex_usage
& PIPE_TEXTURE_USAGE_RENDER_TARGET
)
484 return default_deep_rgba_format( screen
, target
, tex_usage
, geom_flags
);
486 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
490 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A4R4G4B4_UNORM
, target
, tex_usage
, geom_flags
))
491 return PIPE_FORMAT_A4R4G4B4_UNORM
;
492 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
495 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
496 return PIPE_FORMAT_A1R5G5B5_UNORM
;
497 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
503 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
508 if (screen
->is_format_supported( screen
, PIPE_FORMAT_R5G6B5_UNORM
, target
, tex_usage
, geom_flags
))
509 return PIPE_FORMAT_R5G6B5_UNORM
;
510 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, target
, tex_usage
, geom_flags
))
511 return PIPE_FORMAT_A1R5G5B5_UNORM
;
512 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
519 case GL_COMPRESSED_ALPHA
:
520 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8_UNORM
, target
, tex_usage
, geom_flags
))
521 return PIPE_FORMAT_A8_UNORM
;
522 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
530 case GL_COMPRESSED_LUMINANCE
:
531 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_UNORM
, target
, tex_usage
, geom_flags
))
532 return PIPE_FORMAT_L8_UNORM
;
533 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
536 case GL_LUMINANCE_ALPHA
:
537 case GL_LUMINANCE4_ALPHA4
:
538 case GL_LUMINANCE6_ALPHA2
:
539 case GL_LUMINANCE8_ALPHA8
:
540 case GL_LUMINANCE12_ALPHA4
:
541 case GL_LUMINANCE12_ALPHA12
:
542 case GL_LUMINANCE16_ALPHA16
:
543 case GL_COMPRESSED_LUMINANCE_ALPHA
:
544 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_UNORM
, target
, tex_usage
, geom_flags
))
545 return PIPE_FORMAT_A8L8_UNORM
;
546 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
553 case GL_COMPRESSED_INTENSITY
:
554 if (screen
->is_format_supported( screen
, PIPE_FORMAT_I8_UNORM
, target
, tex_usage
, geom_flags
))
555 return PIPE_FORMAT_I8_UNORM
;
556 return default_rgba_format( screen
, target
, tex_usage
, geom_flags
);
559 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
560 target
, tex_usage
, geom_flags
)) {
561 return PIPE_FORMAT_YCBCR
;
563 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
564 target
, tex_usage
, geom_flags
)) {
565 return PIPE_FORMAT_YCBCR_REV
;
567 return PIPE_FORMAT_NONE
;
571 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
572 return PIPE_FORMAT_DXT1_RGB
;
574 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
575 return PIPE_FORMAT_DXT1_RGBA
;
579 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
580 return PIPE_FORMAT_DXT3_RGBA
;
582 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
583 return PIPE_FORMAT_DXT5_RGBA
;
586 case GL_COMPRESSED_RGB_FXT1_3DFX
:
587 return PIPE_FORMAT_RGB_FXT1
;
588 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
589 return PIPE_FORMAT_RGB_FXT1
;
592 case GL_DEPTH_COMPONENT16
:
593 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, target
, tex_usage
, geom_flags
))
594 return PIPE_FORMAT_Z16_UNORM
;
596 case GL_DEPTH_COMPONENT24
:
597 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
598 return PIPE_FORMAT_S8Z24_UNORM
;
599 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
600 return PIPE_FORMAT_Z24S8_UNORM
;
602 case GL_DEPTH_COMPONENT32
:
603 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, target
, tex_usage
, geom_flags
))
604 return PIPE_FORMAT_Z32_UNORM
;
606 case GL_DEPTH_COMPONENT
:
607 return default_depth_format( screen
, target
, tex_usage
, geom_flags
);
609 case GL_STENCIL_INDEX
:
610 case GL_STENCIL_INDEX1_EXT
:
611 case GL_STENCIL_INDEX4_EXT
:
612 case GL_STENCIL_INDEX8_EXT
:
613 case GL_STENCIL_INDEX16_EXT
:
614 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8_UNORM
, target
, tex_usage
, geom_flags
))
615 return PIPE_FORMAT_S8_UNORM
;
616 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
617 return PIPE_FORMAT_S8Z24_UNORM
;
618 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
619 return PIPE_FORMAT_Z24S8_UNORM
;
620 return PIPE_FORMAT_NONE
;
622 case GL_DEPTH_STENCIL_EXT
:
623 case GL_DEPTH24_STENCIL8_EXT
:
624 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, target
, tex_usage
, geom_flags
))
625 return PIPE_FORMAT_S8Z24_UNORM
;
626 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, target
, tex_usage
, geom_flags
))
627 return PIPE_FORMAT_Z24S8_UNORM
;
628 return PIPE_FORMAT_NONE
;
632 case GL_COMPRESSED_SRGB_EXT
:
633 case GL_COMPRESSED_SRGB_ALPHA_EXT
:
634 case GL_SRGB_ALPHA_EXT
:
635 case GL_SRGB8_ALPHA8_EXT
:
636 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
637 case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT
:
638 return PIPE_FORMAT_DXT1_SRGB
;
639 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
:
640 return PIPE_FORMAT_DXT1_SRGBA
;
641 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
:
642 return PIPE_FORMAT_DXT3_SRGBA
;
643 case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
:
644 return PIPE_FORMAT_DXT5_SRGBA
;
646 case GL_SLUMINANCE_ALPHA_EXT
:
647 case GL_SLUMINANCE8_ALPHA8_EXT
:
648 case GL_COMPRESSED_SLUMINANCE_EXT
:
649 case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT
:
650 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A8L8_SRGB
, target
, tex_usage
, geom_flags
))
651 return PIPE_FORMAT_A8L8_SRGB
;
652 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
654 case GL_SLUMINANCE_EXT
:
655 case GL_SLUMINANCE8_EXT
:
656 if (screen
->is_format_supported( screen
, PIPE_FORMAT_L8_SRGB
, target
, tex_usage
, geom_flags
))
657 return PIPE_FORMAT_L8_SRGB
;
658 return default_srgba_format( screen
, target
, tex_usage
, geom_flags
);
661 return PIPE_FORMAT_NONE
;
667 is_depth_or_stencil_format(GLenum internalFormat
)
669 switch (internalFormat
) {
670 case GL_DEPTH_COMPONENT
:
671 case GL_DEPTH_COMPONENT16
:
672 case GL_DEPTH_COMPONENT24
:
673 case GL_DEPTH_COMPONENT32
:
674 case GL_STENCIL_INDEX
:
675 case GL_STENCIL_INDEX1_EXT
:
676 case GL_STENCIL_INDEX4_EXT
:
677 case GL_STENCIL_INDEX8_EXT
:
678 case GL_STENCIL_INDEX16_EXT
:
679 case GL_DEPTH_STENCIL_EXT
:
680 case GL_DEPTH24_STENCIL8_EXT
:
688 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
691 st_choose_renderbuffer_format(struct pipe_screen
*screen
,
692 GLenum internalFormat
)
695 if (is_depth_or_stencil_format(internalFormat
))
696 usage
= PIPE_TEXTURE_USAGE_DEPTH_STENCIL
;
698 usage
= PIPE_TEXTURE_USAGE_RENDER_TARGET
;
699 return st_choose_format(screen
, internalFormat
, PIPE_TEXTURE_2D
, usage
);
704 translate_gallium_format_to_mesa_format(enum pipe_format format
)
707 case PIPE_FORMAT_A8R8G8B8_UNORM
:
708 return MESA_FORMAT_ARGB8888
;
709 case PIPE_FORMAT_X8R8G8B8_UNORM
:
710 return MESA_FORMAT_XRGB8888
;
711 case PIPE_FORMAT_A1R5G5B5_UNORM
:
712 return MESA_FORMAT_ARGB1555
;
713 case PIPE_FORMAT_A4R4G4B4_UNORM
:
714 return MESA_FORMAT_ARGB4444
;
715 case PIPE_FORMAT_R5G6B5_UNORM
:
716 return MESA_FORMAT_RGB565
;
717 case PIPE_FORMAT_A8L8_UNORM
:
718 return MESA_FORMAT_AL88
;
719 case PIPE_FORMAT_A8_UNORM
:
720 return MESA_FORMAT_A8
;
721 case PIPE_FORMAT_L8_UNORM
:
722 return MESA_FORMAT_L8
;
723 case PIPE_FORMAT_I8_UNORM
:
724 return MESA_FORMAT_I8
;
725 case PIPE_FORMAT_Z16_UNORM
:
726 return MESA_FORMAT_Z16
;
727 case PIPE_FORMAT_Z32_UNORM
:
728 return MESA_FORMAT_Z32
;
729 case PIPE_FORMAT_Z24S8_UNORM
:
730 return MESA_FORMAT_Z24_S8
;
731 case PIPE_FORMAT_X8Z24_UNORM
:
732 return MESA_FORMAT_X8_Z24
;
733 case PIPE_FORMAT_S8Z24_UNORM
:
734 return MESA_FORMAT_S8_Z24
;
735 case PIPE_FORMAT_YCBCR
:
736 return MESA_FORMAT_YCBCR
;
737 case PIPE_FORMAT_YCBCR_REV
:
738 return MESA_FORMAT_YCBCR_REV
;
739 #if FEATURE_texture_s3tc
740 case PIPE_FORMAT_DXT1_RGB
:
741 return MESA_FORMAT_RGB_DXT1
;
742 case PIPE_FORMAT_DXT1_RGBA
:
743 return MESA_FORMAT_RGBA_DXT1
;
744 case PIPE_FORMAT_DXT3_RGBA
:
745 return MESA_FORMAT_RGBA_DXT3
;
746 case PIPE_FORMAT_DXT5_RGBA
:
747 return MESA_FORMAT_RGBA_DXT5
;
748 #if FEATURE_EXT_texture_sRGB
749 case PIPE_FORMAT_DXT1_SRGB
:
750 return MESA_FORMAT_SRGB_DXT1
;
751 case PIPE_FORMAT_DXT1_SRGBA
:
752 return MESA_FORMAT_SRGBA_DXT1
;
753 case PIPE_FORMAT_DXT3_SRGBA
:
754 return MESA_FORMAT_SRGBA_DXT3
;
755 case PIPE_FORMAT_DXT5_SRGBA
:
756 return MESA_FORMAT_SRGBA_DXT5
;
759 #if FEATURE_EXT_texture_sRGB
760 case PIPE_FORMAT_A8L8_SRGB
:
761 return MESA_FORMAT_SLA8
;
762 case PIPE_FORMAT_L8_SRGB
:
763 return MESA_FORMAT_SL8
;
764 case PIPE_FORMAT_R8G8B8_SRGB
:
765 return MESA_FORMAT_SRGB8
;
766 case PIPE_FORMAT_R8G8B8A8_SRGB
:
767 return MESA_FORMAT_SRGBA8
;
768 case PIPE_FORMAT_A8R8G8B8_SRGB
:
769 return MESA_FORMAT_SARGB8
;
771 /* XXX add additional cases */
774 return MESA_FORMAT_NONE
;
780 * Called via ctx->Driver.chooseTextureFormat().
783 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
784 GLenum format
, GLenum type
)
786 enum pipe_format pFormat
;
791 pFormat
= st_choose_format(ctx
->st
->pipe
->screen
, internalFormat
,
792 PIPE_TEXTURE_2D
, PIPE_TEXTURE_USAGE_SAMPLER
);
793 if (pFormat
== PIPE_FORMAT_NONE
)
794 return MESA_FORMAT_NONE
;
796 return translate_gallium_format_to_mesa_format(pFormat
);
801 * Test if a gallium format is equivalent to a GL format/type.
804 st_equal_formats(enum pipe_format pFormat
, GLenum format
, GLenum type
)
807 case PIPE_FORMAT_R8G8B8A8_UNORM
:
808 return format
== GL_RGBA
&& type
== GL_UNSIGNED_BYTE
;
809 case PIPE_FORMAT_B8G8R8A8_UNORM
:
810 return format
== GL_BGRA
&& type
== GL_UNSIGNED_BYTE
;
811 case PIPE_FORMAT_R5G6B5_UNORM
:
812 return format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
;
813 /* XXX more combos... */