1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Texture Image-related functions.
34 #include "main/imports.h"
35 #include "main/context.h"
36 #include "main/texstore.h"
37 #include "main/texformat.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 "st_context.h"
45 #include "st_format.h"
49 pipe_format_rgbazs_t info
,
54 if (pf_swizzle_x(info
) == comp
) {
55 size
= pf_size_x(info
);
57 else if (pf_swizzle_y(info
) == comp
) {
58 size
= pf_size_y(info
);
60 else if (pf_swizzle_z(info
) == comp
) {
61 size
= pf_size_z(info
);
63 else if (pf_swizzle_w(info
) == comp
) {
64 size
= pf_size_w(info
);
69 return size
<< (pf_exp8(info
) * 3);
74 pipe_format_rgbazs_t info
)
76 GLuint size
= format_bits( info
, PIPE_FORMAT_COMP_R
);
78 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_G
) );
79 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_B
) );
80 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_A
) );
81 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_Z
) );
82 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_S
) );
88 pipe_format_rgbazs_t info
)
91 format_bits( info
, PIPE_FORMAT_COMP_R
) +
92 format_bits( info
, PIPE_FORMAT_COMP_G
) +
93 format_bits( info
, PIPE_FORMAT_COMP_B
) +
94 format_bits( info
, PIPE_FORMAT_COMP_A
) +
95 format_bits( info
, PIPE_FORMAT_COMP_Z
) +
96 format_bits( info
, PIPE_FORMAT_COMP_S
);
103 st_get_format_info(enum pipe_format format
, struct pipe_format_info
*pinfo
)
105 if (pf_layout(format
) == PIPE_FORMAT_LAYOUT_RGBAZS
) {
106 pipe_format_rgbazs_t info
;
114 pf_sprint_name( fmtname
, format
);
122 if (format
== PIPE_FORMAT_A1R5G5B5_UNORM
|| format
== PIPE_FORMAT_R5G6B5_UNORM
) {
123 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
128 size
= format_max_bits( info
);
130 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
131 pinfo
->datatype
= GL_UNSIGNED_BYTE
;
133 pinfo
->datatype
= GL_BYTE
;
135 else if (size
== 16) {
136 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
137 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
139 pinfo
->datatype
= GL_SHORT
;
142 assert( size
<= 32 );
143 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
144 pinfo
->datatype
= GL_UNSIGNED_INT
;
146 pinfo
->datatype
= GL_INT
;
151 pinfo
->red_bits
= format_bits( info
, PIPE_FORMAT_COMP_R
);
152 pinfo
->green_bits
= format_bits( info
, PIPE_FORMAT_COMP_G
);
153 pinfo
->blue_bits
= format_bits( info
, PIPE_FORMAT_COMP_B
);
154 pinfo
->alpha_bits
= format_bits( info
, PIPE_FORMAT_COMP_A
);
155 pinfo
->depth_bits
= format_bits( info
, PIPE_FORMAT_COMP_Z
);
156 pinfo
->stencil_bits
= format_bits( info
, PIPE_FORMAT_COMP_S
);
157 pinfo
->luminance_bits
= 0;
158 pinfo
->intensity_bits
= 0;
161 pinfo
->size
= format_size( info
) / 8;
163 /* Luminance & Intensity bits */
164 if( pf_swizzle_x(info
) == PIPE_FORMAT_COMP_R
&&
165 pf_swizzle_y(info
) == PIPE_FORMAT_COMP_R
&&
166 pf_swizzle_z(info
) == PIPE_FORMAT_COMP_R
) {
167 if( pf_swizzle_w(info
) == PIPE_FORMAT_COMP_R
) {
168 pinfo
->intensity_bits
= pinfo
->red_bits
;
171 pinfo
->luminance_bits
= pinfo
->red_bits
;
177 if (pinfo
->depth_bits
) {
178 if (pinfo
->stencil_bits
) {
179 pinfo
->base_format
= GL_DEPTH_STENCIL_EXT
;
182 pinfo
->base_format
= GL_DEPTH_COMPONENT
;
185 else if (pinfo
->stencil_bits
) {
186 pinfo
->base_format
= GL_STENCIL_INDEX
;
189 pinfo
->base_format
= GL_RGBA
;
192 else if (pf_layout(format
) == PIPE_FORMAT_LAYOUT_YCBCR
) {
193 pinfo
->base_format
= GL_YCBCR_MESA
;
194 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
195 pinfo
->size
= 2; /* two bytes per "texel" */
198 /* compressed format? */
204 "ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n",
210 pinfo
->stencil_bits
);
213 pinfo
->format
= format
;
220 * Return bytes per pixel for the given format.
223 st_sizeof_format(enum pipe_format format
)
225 struct pipe_format_info info
;
226 if (!st_get_format_info( format
, &info
)) {
235 * Return bytes per pixel for the given format.
238 st_format_datatype(enum pipe_format format
)
240 struct pipe_format_info info
;
241 if (!st_get_format_info( format
, &info
)) {
245 return info
.datatype
;
250 st_mesa_format_to_pipe_format(GLuint mesaFormat
)
252 switch (mesaFormat
) {
254 case MESA_FORMAT_ARGB8888_REV
:
255 case MESA_FORMAT_ARGB8888
:
256 return PIPE_FORMAT_A8R8G8B8_UNORM
;
257 case MESA_FORMAT_ARGB1555
:
258 return PIPE_FORMAT_A1R5G5B5_UNORM
;
259 case MESA_FORMAT_ARGB4444
:
260 return PIPE_FORMAT_A4R4G4B4_UNORM
;
261 case MESA_FORMAT_RGB565
:
262 return PIPE_FORMAT_R5G6B5_UNORM
;
263 case MESA_FORMAT_AL88
:
264 return PIPE_FORMAT_U_A8_L8
;
266 return PIPE_FORMAT_U_A8
;
268 return PIPE_FORMAT_U_L8
;
270 return PIPE_FORMAT_U_I8
;
271 case MESA_FORMAT_Z16
:
272 return PIPE_FORMAT_Z16_UNORM
;
273 case MESA_FORMAT_Z32
:
274 return PIPE_FORMAT_Z32_UNORM
;
275 case MESA_FORMAT_Z24_S8
:
276 return PIPE_FORMAT_Z24S8_UNORM
;
277 case MESA_FORMAT_YCBCR
:
278 return PIPE_FORMAT_YCBCR
;
279 case MESA_FORMAT_RGB_DXT1
:
280 return PIPE_FORMAT_DXT1_RGB
;
281 case MESA_FORMAT_RGBA_DXT1
:
282 return PIPE_FORMAT_DXT1_RGBA
;
283 case MESA_FORMAT_RGBA_DXT3
:
284 return PIPE_FORMAT_DXT3_RGBA
;
285 case MESA_FORMAT_RGBA_DXT5
:
286 return PIPE_FORMAT_DXT5_RGBA
;
294 * Find an RGBA format supported by the context/winsys.
297 default_rgba_format(struct pipe_screen
*screen
, uint type
)
299 static const enum pipe_format colorFormats
[] = {
300 PIPE_FORMAT_A8R8G8B8_UNORM
,
301 PIPE_FORMAT_B8G8R8A8_UNORM
,
302 PIPE_FORMAT_R8G8B8A8_UNORM
,
303 PIPE_FORMAT_R5G6B5_UNORM
306 for (i
= 0; i
< Elements(colorFormats
); i
++) {
307 if (screen
->is_format_supported( screen
, colorFormats
[i
], type
)) {
308 return colorFormats
[i
];
311 return PIPE_FORMAT_NONE
;
316 * Search list of formats for first RGBA format with >8 bits/channel.
319 default_deep_rgba_format(struct pipe_screen
*screen
, uint type
)
321 if (screen
->is_format_supported(screen
, PIPE_FORMAT_R16G16B16A16_SNORM
, type
)) {
322 return PIPE_FORMAT_R16G16B16A16_SNORM
;
324 return PIPE_FORMAT_NONE
;
329 * Find an Z format supported by the context/winsys.
332 default_depth_format(struct pipe_screen
*screen
, uint type
)
334 static const enum pipe_format zFormats
[] = {
335 PIPE_FORMAT_Z16_UNORM
,
336 PIPE_FORMAT_Z32_UNORM
,
337 PIPE_FORMAT_S8Z24_UNORM
,
338 PIPE_FORMAT_Z24S8_UNORM
341 for (i
= 0; i
< Elements(zFormats
); i
++) {
342 if (screen
->is_format_supported( screen
, zFormats
[i
], type
)) {
346 return PIPE_FORMAT_NONE
;
351 * Given an OpenGL internalFormat value for a texture or surface, return
352 * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
354 static enum pipe_format
355 choose_format(struct pipe_context
*pipe
, GLint internalFormat
, uint surfType
)
357 struct pipe_screen
*screen
= pipe
->screen
;
359 assert(surfType
== PIPE_SURFACE
||
360 surfType
== PIPE_TEXTURE
);
362 switch (internalFormat
) {
365 case GL_COMPRESSED_RGBA
:
368 case GL_COMPRESSED_RGB
:
372 return default_rgba_format( screen
, surfType
);
374 return default_deep_rgba_format( screen
, surfType
);
378 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A4R4G4B4_UNORM
, surfType
))
379 return PIPE_FORMAT_A4R4G4B4_UNORM
;
380 return default_rgba_format( screen
, surfType
);
383 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, surfType
))
384 return PIPE_FORMAT_A1R5G5B5_UNORM
;
385 return default_rgba_format( screen
, surfType
);
391 return default_rgba_format( screen
, surfType
);
396 if (screen
->is_format_supported( screen
, PIPE_FORMAT_A1R5G5B5_UNORM
, surfType
))
397 return PIPE_FORMAT_A1R5G5B5_UNORM
;
398 if (screen
->is_format_supported( screen
, PIPE_FORMAT_R5G6B5_UNORM
, surfType
))
399 return PIPE_FORMAT_R5G6B5_UNORM
;
400 return default_rgba_format( screen
, surfType
);
407 case GL_COMPRESSED_ALPHA
:
408 if (screen
->is_format_supported( screen
, PIPE_FORMAT_U_A8
, surfType
))
409 return PIPE_FORMAT_U_A8
;
410 return default_rgba_format( screen
, surfType
);
418 case GL_COMPRESSED_LUMINANCE
:
419 if (screen
->is_format_supported( screen
, PIPE_FORMAT_U_L8
, surfType
))
420 return PIPE_FORMAT_U_L8
;
421 return default_rgba_format( screen
, surfType
);
424 case GL_LUMINANCE_ALPHA
:
425 case GL_LUMINANCE4_ALPHA4
:
426 case GL_LUMINANCE6_ALPHA2
:
427 case GL_LUMINANCE8_ALPHA8
:
428 case GL_LUMINANCE12_ALPHA4
:
429 case GL_LUMINANCE12_ALPHA12
:
430 case GL_LUMINANCE16_ALPHA16
:
431 case GL_COMPRESSED_LUMINANCE_ALPHA
:
432 if (screen
->is_format_supported( screen
, PIPE_FORMAT_U_A8_L8
, surfType
))
433 return PIPE_FORMAT_U_A8_L8
;
434 return default_rgba_format( screen
, surfType
);
441 case GL_COMPRESSED_INTENSITY
:
442 if (screen
->is_format_supported( screen
, PIPE_FORMAT_U_I8
, surfType
))
443 return PIPE_FORMAT_U_I8
;
444 return default_rgba_format( screen
, surfType
);
447 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR
,
449 return PIPE_FORMAT_YCBCR
;
451 if (screen
->is_format_supported(screen
, PIPE_FORMAT_YCBCR_REV
,
453 return PIPE_FORMAT_YCBCR_REV
;
455 return PIPE_FORMAT_NONE
;
459 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
460 return PIPE_FORMAT_DXT1_RGB
;
462 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
463 return PIPE_FORMAT_DXT1_RGBA
;
467 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
468 return PIPE_FORMAT_DXT3_RGBA
;
470 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
471 return PIPE_FORMAT_DXT5_RGBA
;
474 case GL_COMPRESSED_RGB_FXT1_3DFX
:
475 return PIPE_FORMAT_RGB_FXT1
;
476 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
477 return PIPE_FORMAT_RGB_FXT1
;
480 case GL_DEPTH_COMPONENT16
:
481 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z16_UNORM
, surfType
))
482 return PIPE_FORMAT_Z16_UNORM
;
484 case GL_DEPTH_COMPONENT24
:
485 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, surfType
))
486 return PIPE_FORMAT_S8Z24_UNORM
;
487 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, surfType
))
488 return PIPE_FORMAT_Z24S8_UNORM
;
490 case GL_DEPTH_COMPONENT32
:
491 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z32_UNORM
, surfType
))
492 return PIPE_FORMAT_Z32_UNORM
;
494 case GL_DEPTH_COMPONENT
:
495 return default_depth_format( screen
, surfType
);
497 case GL_STENCIL_INDEX
:
498 case GL_STENCIL_INDEX1_EXT
:
499 case GL_STENCIL_INDEX4_EXT
:
500 case GL_STENCIL_INDEX8_EXT
:
501 case GL_STENCIL_INDEX16_EXT
:
502 if (screen
->is_format_supported( screen
, PIPE_FORMAT_U_S8
, surfType
))
503 return PIPE_FORMAT_U_S8
;
504 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, surfType
))
505 return PIPE_FORMAT_S8Z24_UNORM
;
506 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, surfType
))
507 return PIPE_FORMAT_Z24S8_UNORM
;
508 return PIPE_FORMAT_NONE
;
510 case GL_DEPTH_STENCIL_EXT
:
511 case GL_DEPTH24_STENCIL8_EXT
:
512 if (screen
->is_format_supported( screen
, PIPE_FORMAT_S8Z24_UNORM
, surfType
))
513 return PIPE_FORMAT_S8Z24_UNORM
;
514 if (screen
->is_format_supported( screen
, PIPE_FORMAT_Z24S8_UNORM
, surfType
))
515 return PIPE_FORMAT_Z24S8_UNORM
;
516 return PIPE_FORMAT_NONE
;
519 return PIPE_FORMAT_NONE
;
525 * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
528 st_choose_renderbuffer_format(struct pipe_context
*pipe
, GLint internalFormat
)
530 return choose_format(pipe
, internalFormat
, PIPE_SURFACE
);
534 static const struct gl_texture_format
*
535 translate_gallium_format_to_mesa_format(enum pipe_format format
)
538 case PIPE_FORMAT_A8R8G8B8_UNORM
:
539 return &_mesa_texformat_argb8888
;
540 case PIPE_FORMAT_A1R5G5B5_UNORM
:
541 return &_mesa_texformat_argb1555
;
542 case PIPE_FORMAT_A4R4G4B4_UNORM
:
543 return &_mesa_texformat_argb4444
;
544 case PIPE_FORMAT_R5G6B5_UNORM
:
545 return &_mesa_texformat_rgb565
;
546 case PIPE_FORMAT_U_A8_L8
:
547 return &_mesa_texformat_al88
;
548 case PIPE_FORMAT_U_A8
:
549 return &_mesa_texformat_a8
;
550 case PIPE_FORMAT_U_L8
:
551 return &_mesa_texformat_l8
;
552 case PIPE_FORMAT_U_I8
:
553 return &_mesa_texformat_i8
;
554 case PIPE_FORMAT_Z16_UNORM
:
555 return &_mesa_texformat_z16
;
556 case PIPE_FORMAT_Z32_UNORM
:
557 return &_mesa_texformat_z32
;
558 case PIPE_FORMAT_S8Z24_UNORM
:
559 /* XXX fallthrough OK? */
560 case PIPE_FORMAT_Z24S8_UNORM
:
561 return &_mesa_texformat_z24_s8
;
562 case PIPE_FORMAT_YCBCR
:
563 return &_mesa_texformat_ycbcr
;
564 case PIPE_FORMAT_YCBCR_REV
:
565 return &_mesa_texformat_ycbcr_rev
;
566 case PIPE_FORMAT_DXT1_RGB
:
567 return &_mesa_texformat_rgb_dxt1
;
568 case PIPE_FORMAT_DXT1_RGBA
:
569 return &_mesa_texformat_rgba_dxt1
;
570 case PIPE_FORMAT_DXT3_RGBA
:
571 return &_mesa_texformat_rgba_dxt3
;
572 case PIPE_FORMAT_DXT5_RGBA
:
573 return &_mesa_texformat_rgba_dxt5
;
574 /* XXX add additional cases */
583 * Called via ctx->Driver.chooseTextureFormat().
585 const struct gl_texture_format
*
586 st_ChooseTextureFormat(GLcontext
*ctx
, GLint internalFormat
,
587 GLenum format
, GLenum type
)
589 enum pipe_format pFormat
;
594 pFormat
= choose_format(ctx
->st
->pipe
, internalFormat
, PIPE_TEXTURE
);
595 if (pFormat
== PIPE_FORMAT_NONE
)
598 return translate_gallium_format_to_mesa_format(pFormat
);