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 "st_context.h"
44 #include "st_format.h"
48 pipe_format_rgbazs_t info
,
53 if (pf_swizzle_x(info
) == comp
) {
54 size
= pf_size_x(info
);
56 else if (pf_swizzle_y(info
) == comp
) {
57 size
= pf_size_y(info
);
59 else if (pf_swizzle_z(info
) == comp
) {
60 size
= pf_size_z(info
);
62 else if (pf_swizzle_w(info
) == comp
) {
63 size
= pf_size_w(info
);
68 return size
<< (pf_exp8(info
) * 3);
73 pipe_format_rgbazs_t info
)
75 GLuint size
= format_bits( info
, PIPE_FORMAT_COMP_R
);
77 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_G
) );
78 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_B
) );
79 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_A
) );
80 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_Z
) );
81 size
= MAX2( size
, format_bits( info
, PIPE_FORMAT_COMP_S
) );
87 pipe_format_rgbazs_t info
)
90 format_bits( info
, PIPE_FORMAT_COMP_R
) +
91 format_bits( info
, PIPE_FORMAT_COMP_G
) +
92 format_bits( info
, PIPE_FORMAT_COMP_B
) +
93 format_bits( info
, PIPE_FORMAT_COMP_A
) +
94 format_bits( info
, PIPE_FORMAT_COMP_Z
) +
95 format_bits( info
, PIPE_FORMAT_COMP_S
);
104 struct pipe_format_info
*pinfo
)
106 if (pf_layout(format
) == PIPE_FORMAT_LAYOUT_RGBAZS
) {
107 pipe_format_rgbazs_t info
;
115 pf_sprint_name( fmtname
, format
);
123 if (format
== PIPE_FORMAT_U_A1_R5_G5_B5
|| format
== PIPE_FORMAT_U_R5_G6_B5
) {
124 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
129 size
= format_max_bits( info
);
131 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
132 pinfo
->datatype
= GL_UNSIGNED_BYTE
;
134 pinfo
->datatype
= GL_BYTE
;
136 else if (size
== 16) {
137 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
138 pinfo
->datatype
= GL_UNSIGNED_SHORT
;
140 pinfo
->datatype
= GL_SHORT
;
143 assert( size
<= 32 );
144 if (pf_type(info
) == PIPE_FORMAT_TYPE_UNORM
)
145 pinfo
->datatype
= GL_UNSIGNED_INT
;
147 pinfo
->datatype
= GL_INT
;
152 pinfo
->red_bits
= format_bits( info
, PIPE_FORMAT_COMP_R
);
153 pinfo
->green_bits
= format_bits( info
, PIPE_FORMAT_COMP_G
);
154 pinfo
->blue_bits
= format_bits( info
, PIPE_FORMAT_COMP_B
);
155 pinfo
->alpha_bits
= format_bits( info
, PIPE_FORMAT_COMP_A
);
156 pinfo
->depth_bits
= format_bits( info
, PIPE_FORMAT_COMP_Z
);
157 pinfo
->stencil_bits
= format_bits( info
, PIPE_FORMAT_COMP_S
);
158 pinfo
->luminance_bits
= 0;
159 pinfo
->intensity_bits
= 0;
162 pinfo
->size
= format_size( info
) / 8;
164 /* Luminance & Intensity bits */
165 if( pf_swizzle_x(info
) == PIPE_FORMAT_COMP_R
&&
166 pf_swizzle_y(info
) == PIPE_FORMAT_COMP_R
&&
167 pf_swizzle_z(info
) == PIPE_FORMAT_COMP_R
) {
168 if( pf_swizzle_w(info
) == PIPE_FORMAT_COMP_R
) {
169 pinfo
->intensity_bits
= pinfo
->red_bits
;
172 pinfo
->luminance_bits
= pinfo
->red_bits
;
178 if (pinfo
->depth_bits
) {
179 if (pinfo
->stencil_bits
) {
180 pinfo
->base_format
= GL_DEPTH_STENCIL_EXT
;
183 pinfo
->base_format
= GL_DEPTH_COMPONENT
;
186 else if (pinfo
->stencil_bits
) {
187 pinfo
->base_format
= GL_STENCIL_INDEX
;
190 pinfo
->base_format
= GL_RGBA
;
194 pipe_format_ycbcr_t info
;
196 assert( pf_layout(format
) == PIPE_FORMAT_LAYOUT_YCBCR
);
206 "ST_FORMAT: R(%u), G(%u), B(%u), A(%u), Z(%u), S(%u)\n",
212 pinfo
->stencil_bits
);
215 pinfo
->format
= format
;
222 * Return bytes per pixel for the given format.
225 st_sizeof_format(GLuint pipeFormat
)
227 struct pipe_format_info info
;
228 if (!st_get_format_info( pipeFormat
, &info
)) {
237 * Return bytes per pixel for the given format.
240 st_format_datatype(GLuint pipeFormat
)
242 struct pipe_format_info info
;
243 if (!st_get_format_info( pipeFormat
, &info
)) {
247 return info
.datatype
;
252 st_mesa_format_to_pipe_format(GLuint mesaFormat
)
254 switch (mesaFormat
) {
256 case MESA_FORMAT_ARGB8888_REV
:
257 case MESA_FORMAT_ARGB8888
:
258 return PIPE_FORMAT_U_A8_R8_G8_B8
;
259 case MESA_FORMAT_ARGB4444
:
260 return PIPE_FORMAT_U_A4_R4_G4_B4
;
261 case MESA_FORMAT_AL88
:
262 return PIPE_FORMAT_U_A8_L8
;
264 return PIPE_FORMAT_U_A8
;
266 return PIPE_FORMAT_U_L8
;
268 return PIPE_FORMAT_U_I8
;
269 case MESA_FORMAT_Z16
:
270 return PIPE_FORMAT_U_Z16
;
278 * Find an RGBA format supported by the context/winsys.
282 struct pipe_context
*pipe
)
284 static const uint colorFormats
[] = {
285 PIPE_FORMAT_U_R8_G8_B8_A8
,
286 PIPE_FORMAT_U_A8_R8_G8_B8
,
287 PIPE_FORMAT_U_B8_G8_R8_A8
,
288 PIPE_FORMAT_U_R5_G6_B5
291 for (i
= 0; i
< Elements(colorFormats
); i
++) {
292 if (pipe
->is_format_supported( pipe
, colorFormats
[i
] )) {
293 return colorFormats
[i
];
296 return PIPE_FORMAT_NONE
;
301 * Search list of formats for first RGBA format with >8 bits/channel.
304 default_deep_rgba_format(
305 struct pipe_context
*pipe
)
307 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_S_R16_G16_B16_A16
)) {
308 return PIPE_FORMAT_S_R16_G16_B16_A16
;
310 return PIPE_FORMAT_NONE
;
315 * Find an Z format supported by the context/winsys.
318 default_depth_format(
319 struct pipe_context
*pipe
)
321 static const uint zFormats
[] = {
328 for (i
= 0; i
< Elements(zFormats
); i
++) {
329 if (pipe
->is_format_supported( pipe
, zFormats
[i
] )) {
333 return PIPE_FORMAT_NONE
;
338 * Choose the PIPE_FORMAT_ to use for storing a texture image based
339 * on the user's internalFormat, format and type parameters.
340 * We query the pipe device for a list of formats which it supports
341 * and choose from them.
342 * If we find a device that needs a more intricate selection mechanism,
343 * this function _could_ get pushed down into the pipe device.
345 * Note: also used for glRenderbufferStorageEXT()
347 * Note: format and type may be GL_NONE (see renderbuffers)
349 * \return PIPE_FORMAT_NONE if error/problem.
352 st_choose_pipe_format(struct pipe_context
*pipe
, GLint internalFormat
,
353 GLenum format
, GLenum type
)
355 switch (internalFormat
) {
358 case GL_COMPRESSED_RGBA
:
359 if (format
== GL_BGRA
) {
360 if (type
== GL_UNSIGNED_BYTE
|| type
== GL_UNSIGNED_INT_8_8_8_8_REV
) {
361 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A8_R8_G8_B8
))
362 return PIPE_FORMAT_U_A8_R8_G8_B8
;
364 else if (type
== GL_UNSIGNED_SHORT_4_4_4_4_REV
) {
365 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A4_R4_G4_B4
))
366 return PIPE_FORMAT_U_A4_R4_G4_B4
;
368 else if (type
== GL_UNSIGNED_SHORT_1_5_5_5_REV
) {
369 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A1_R5_G5_B5
))
370 return PIPE_FORMAT_U_A1_R5_G5_B5
;
373 return default_rgba_format( pipe
);
377 case GL_COMPRESSED_RGB
:
378 if (format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
) {
379 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_R5_G6_B5
))
380 return PIPE_FORMAT_U_R5_G6_B5
;
382 return default_rgba_format( pipe
);
387 return default_rgba_format( pipe
);
389 return default_deep_rgba_format( pipe
);
393 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A4_R4_G4_B4
))
394 return PIPE_FORMAT_U_A4_R4_G4_B4
;
395 return default_rgba_format( pipe
);
398 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A1_R5_G5_B5
))
399 return PIPE_FORMAT_U_A1_R5_G5_B5
;
400 return default_rgba_format( pipe
);
406 return default_rgba_format( pipe
);
411 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A1_R5_G5_B5
))
412 return PIPE_FORMAT_U_A1_R5_G5_B5
;
413 return default_rgba_format( pipe
);
420 case GL_COMPRESSED_ALPHA
:
421 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A8
))
422 return PIPE_FORMAT_U_A8
;
423 return default_rgba_format( pipe
);
431 case GL_COMPRESSED_LUMINANCE
:
432 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A8
))
433 return PIPE_FORMAT_U_A8
;
434 return default_rgba_format( pipe
);
437 case GL_LUMINANCE_ALPHA
:
438 case GL_LUMINANCE4_ALPHA4
:
439 case GL_LUMINANCE6_ALPHA2
:
440 case GL_LUMINANCE8_ALPHA8
:
441 case GL_LUMINANCE12_ALPHA4
:
442 case GL_LUMINANCE12_ALPHA12
:
443 case GL_LUMINANCE16_ALPHA16
:
444 case GL_COMPRESSED_LUMINANCE_ALPHA
:
445 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_A8_L8
))
446 return PIPE_FORMAT_U_A8_L8
;
447 return default_rgba_format( pipe
);
454 case GL_COMPRESSED_INTENSITY
:
455 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_I8
))
456 return PIPE_FORMAT_U_I8
;
457 return default_rgba_format( pipe
);
460 if (type
== GL_UNSIGNED_SHORT_8_8_MESA
|| type
== GL_UNSIGNED_BYTE
) {
461 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_YCBCR
))
462 return PIPE_FORMAT_YCBCR
;
465 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_YCBCR_REV
))
466 return PIPE_FORMAT_YCBCR_REV
;
468 return PIPE_FORMAT_NONE
;
471 case GL_COMPRESSED_RGB_FXT1_3DFX
:
472 return &_mesa_texformat_rgb_fxt1
;
473 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
474 return &_mesa_texformat_rgba_fxt1
;
478 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
479 return &_mesa_texformat_rgb_dxt1
;
481 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
482 return &_mesa_texformat_rgba_dxt1
;
486 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
487 return &_mesa_texformat_rgba_dxt3
;
489 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
490 return &_mesa_texformat_rgba_dxt5
;
493 case GL_DEPTH_COMPONENT16
:
494 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_Z16
))
495 return PIPE_FORMAT_U_Z16
;
497 case GL_DEPTH_COMPONENT24
:
498 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_S8_Z24
))
499 return PIPE_FORMAT_S8_Z24
;
500 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_Z24_S8
))
501 return PIPE_FORMAT_Z24_S8
;
503 case GL_DEPTH_COMPONENT32
:
504 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_Z32
))
505 return PIPE_FORMAT_U_Z32
;
507 case GL_DEPTH_COMPONENT
:
508 return default_depth_format( pipe
);
510 case GL_STENCIL_INDEX
:
511 case GL_STENCIL_INDEX1_EXT
:
512 case GL_STENCIL_INDEX4_EXT
:
513 case GL_STENCIL_INDEX8_EXT
:
514 case GL_STENCIL_INDEX16_EXT
:
515 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_U_S8
))
516 return PIPE_FORMAT_U_S8
;
517 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_S8_Z24
))
518 return PIPE_FORMAT_S8_Z24
;
519 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_Z24_S8
))
520 return PIPE_FORMAT_Z24_S8
;
521 return PIPE_FORMAT_NONE
;
523 case GL_DEPTH_STENCIL_EXT
:
524 case GL_DEPTH24_STENCIL8_EXT
:
525 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_S8_Z24
))
526 return PIPE_FORMAT_S8_Z24
;
527 if (pipe
->is_format_supported( pipe
, PIPE_FORMAT_Z24_S8
))
528 return PIPE_FORMAT_Z24_S8
;
529 return PIPE_FORMAT_NONE
;
532 return PIPE_FORMAT_NONE
;
538 /* It works out that this function is fine for all the supported
539 * hardware. However, there is still a need to map the formats onto
540 * hardware descriptors.
542 /* Note that the i915 can actually support many more formats than
543 * these if we take the step of simply swizzling the colors
544 * immediately after sampling...
546 const struct gl_texture_format
*
547 st_ChooseTextureFormat(GLcontext
* ctx
, GLint internalFormat
,
548 GLenum format
, GLenum type
)
551 struct intel_context
*intel
= intel_context(ctx
);
552 const GLboolean do32bpt
= (intel
->intelScreen
->front
.cpp
== 4);
554 const GLboolean do32bpt
= 1;
559 switch (internalFormat
) {
562 case GL_COMPRESSED_RGBA
:
563 if (format
== GL_BGRA
) {
564 if (type
== GL_UNSIGNED_BYTE
|| type
== GL_UNSIGNED_INT_8_8_8_8_REV
) {
565 return &_mesa_texformat_argb8888
;
567 else if (type
== GL_UNSIGNED_SHORT_4_4_4_4_REV
) {
568 return &_mesa_texformat_argb4444
;
570 else if (type
== GL_UNSIGNED_SHORT_1_5_5_5_REV
) {
571 return &_mesa_texformat_argb1555
;
574 return do32bpt
? &_mesa_texformat_argb8888
: &_mesa_texformat_argb4444
;
578 case GL_COMPRESSED_RGB
:
579 if (format
== GL_RGB
&& type
== GL_UNSIGNED_SHORT_5_6_5
) {
580 return &_mesa_texformat_rgb565
;
582 return do32bpt
? &_mesa_texformat_argb8888
: &_mesa_texformat_rgb565
;
588 return do32bpt
? &_mesa_texformat_argb8888
: &_mesa_texformat_argb4444
;
592 return &_mesa_texformat_argb4444
;
595 return &_mesa_texformat_argb1555
;
601 return &_mesa_texformat_argb8888
;
606 return &_mesa_texformat_rgb565
;
613 case GL_COMPRESSED_ALPHA
:
614 return &_mesa_texformat_a8
;
622 case GL_COMPRESSED_LUMINANCE
:
623 return &_mesa_texformat_l8
;
626 case GL_LUMINANCE_ALPHA
:
627 case GL_LUMINANCE4_ALPHA4
:
628 case GL_LUMINANCE6_ALPHA2
:
629 case GL_LUMINANCE8_ALPHA8
:
630 case GL_LUMINANCE12_ALPHA4
:
631 case GL_LUMINANCE12_ALPHA12
:
632 case GL_LUMINANCE16_ALPHA16
:
633 case GL_COMPRESSED_LUMINANCE_ALPHA
:
634 return &_mesa_texformat_al88
;
641 case GL_COMPRESSED_INTENSITY
:
642 return &_mesa_texformat_i8
;
645 if (type
== GL_UNSIGNED_SHORT_8_8_MESA
|| type
== GL_UNSIGNED_BYTE
)
646 return &_mesa_texformat_ycbcr
;
648 return &_mesa_texformat_ycbcr_rev
;
650 case GL_COMPRESSED_RGB_FXT1_3DFX
:
651 return &_mesa_texformat_rgb_fxt1
;
652 case GL_COMPRESSED_RGBA_FXT1_3DFX
:
653 return &_mesa_texformat_rgba_fxt1
;
657 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT
:
658 return &_mesa_texformat_rgb_dxt1
;
660 case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT
:
661 return &_mesa_texformat_rgba_dxt1
;
665 case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT
:
666 return &_mesa_texformat_rgba_dxt3
;
668 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT
:
669 return &_mesa_texformat_rgba_dxt5
;
671 case GL_DEPTH_COMPONENT
:
672 case GL_DEPTH_COMPONENT16
:
673 case GL_DEPTH_COMPONENT24
:
674 case GL_DEPTH_COMPONENT32
:
675 return &_mesa_texformat_z16
;
677 case GL_DEPTH_STENCIL_EXT
:
678 case GL_DEPTH24_STENCIL8_EXT
:
679 return &_mesa_texformat_z24_s8
;
682 fprintf(stderr
, "unexpected texture format %s in %s\n",
683 _mesa_lookup_enum_by_nr(internalFormat
), __FUNCTION__
);
687 return NULL
; /* never get here */