2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 #include "bufferobj.h"
35 /**********************************************************************/
36 /***** glPixelZoom *****/
37 /**********************************************************************/
42 _mesa_PixelZoom( GLfloat xfactor
, GLfloat yfactor
)
44 GET_CURRENT_CONTEXT(ctx
);
46 if (ctx
->Pixel
.ZoomX
== xfactor
&&
47 ctx
->Pixel
.ZoomY
== yfactor
)
50 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
51 ctx
->Pixel
.ZoomX
= xfactor
;
52 ctx
->Pixel
.ZoomY
= yfactor
;
57 /**********************************************************************/
58 /***** glPixelStore *****/
59 /**********************************************************************/
63 _mesa_PixelStorei( GLenum pname
, GLint param
)
65 /* NOTE: this call can't be compiled into the display list */
66 GET_CURRENT_CONTEXT(ctx
);
67 ASSERT_OUTSIDE_BEGIN_END(ctx
);
70 case GL_PACK_SWAP_BYTES
:
71 if (param
== (GLint
)ctx
->Pack
.SwapBytes
)
73 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
74 ctx
->Pack
.SwapBytes
= param
? GL_TRUE
: GL_FALSE
;
76 case GL_PACK_LSB_FIRST
:
77 if (param
== (GLint
)ctx
->Pack
.LsbFirst
)
79 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
80 ctx
->Pack
.LsbFirst
= param
? GL_TRUE
: GL_FALSE
;
82 case GL_PACK_ROW_LENGTH
:
84 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
87 if (ctx
->Pack
.RowLength
== param
)
89 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
90 ctx
->Pack
.RowLength
= param
;
92 case GL_PACK_IMAGE_HEIGHT
:
94 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
97 if (ctx
->Pack
.ImageHeight
== param
)
99 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
100 ctx
->Pack
.ImageHeight
= param
;
102 case GL_PACK_SKIP_PIXELS
:
104 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
107 if (ctx
->Pack
.SkipPixels
== param
)
109 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
110 ctx
->Pack
.SkipPixels
= param
;
112 case GL_PACK_SKIP_ROWS
:
114 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
117 if (ctx
->Pack
.SkipRows
== param
)
119 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
120 ctx
->Pack
.SkipRows
= param
;
122 case GL_PACK_SKIP_IMAGES
:
124 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
127 if (ctx
->Pack
.SkipImages
== param
)
129 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
130 ctx
->Pack
.SkipImages
= param
;
132 case GL_PACK_ALIGNMENT
:
133 if (param
!=1 && param
!=2 && param
!=4 && param
!=8) {
134 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
137 if (ctx
->Pack
.Alignment
== param
)
139 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
140 ctx
->Pack
.Alignment
= param
;
142 case GL_PACK_INVERT_MESA
:
143 if (!ctx
->Extensions
.MESA_pack_invert
) {
144 _mesa_error( ctx
, GL_INVALID_ENUM
, "glPixelstore(pname)" );
147 if (ctx
->Pack
.Invert
== param
)
149 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
150 ctx
->Pack
.Invert
= param
;
153 case GL_UNPACK_SWAP_BYTES
:
154 if (param
== (GLint
)ctx
->Unpack
.SwapBytes
)
156 if ((GLint
)ctx
->Unpack
.SwapBytes
== param
)
158 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
159 ctx
->Unpack
.SwapBytes
= param
? GL_TRUE
: GL_FALSE
;
161 case GL_UNPACK_LSB_FIRST
:
162 if (param
== (GLint
)ctx
->Unpack
.LsbFirst
)
164 if ((GLint
)ctx
->Unpack
.LsbFirst
== param
)
166 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
167 ctx
->Unpack
.LsbFirst
= param
? GL_TRUE
: GL_FALSE
;
169 case GL_UNPACK_ROW_LENGTH
:
171 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
174 if (ctx
->Unpack
.RowLength
== param
)
176 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
177 ctx
->Unpack
.RowLength
= param
;
179 case GL_UNPACK_IMAGE_HEIGHT
:
181 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
184 if (ctx
->Unpack
.ImageHeight
== param
)
187 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
188 ctx
->Unpack
.ImageHeight
= param
;
190 case GL_UNPACK_SKIP_PIXELS
:
192 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
195 if (ctx
->Unpack
.SkipPixels
== param
)
197 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
198 ctx
->Unpack
.SkipPixels
= param
;
200 case GL_UNPACK_SKIP_ROWS
:
202 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
205 if (ctx
->Unpack
.SkipRows
== param
)
207 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
208 ctx
->Unpack
.SkipRows
= param
;
210 case GL_UNPACK_SKIP_IMAGES
:
212 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore(param)" );
215 if (ctx
->Unpack
.SkipImages
== param
)
217 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
218 ctx
->Unpack
.SkipImages
= param
;
220 case GL_UNPACK_ALIGNMENT
:
221 if (param
!=1 && param
!=2 && param
!=4 && param
!=8) {
222 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelStore" );
225 if (ctx
->Unpack
.Alignment
== param
)
227 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
228 ctx
->Unpack
.Alignment
= param
;
230 case GL_UNPACK_CLIENT_STORAGE_APPLE
:
231 if (param
== (GLint
)ctx
->Unpack
.ClientStorage
)
233 FLUSH_VERTICES(ctx
, _NEW_PACKUNPACK
);
234 ctx
->Unpack
.ClientStorage
= param
? GL_TRUE
: GL_FALSE
;
237 _mesa_error( ctx
, GL_INVALID_ENUM
, "glPixelStore" );
244 _mesa_PixelStoref( GLenum pname
, GLfloat param
)
246 _mesa_PixelStorei( pname
, (GLint
) param
);
251 /**********************************************************************/
252 /***** glPixelMap *****/
253 /**********************************************************************/
257 * Helper routine used by the other _mesa_PixelMap() functions.
260 pixelmap(GLcontext
*ctx
, GLenum map
, GLsizei mapsize
, const GLfloat
*values
)
264 case GL_PIXEL_MAP_S_TO_S
:
265 ctx
->Pixel
.MapStoSsize
= mapsize
;
266 for (i
= 0; i
< mapsize
; i
++) {
267 ctx
->Pixel
.MapStoS
[i
] = IROUND(values
[i
]);
270 case GL_PIXEL_MAP_I_TO_I
:
271 ctx
->Pixel
.MapItoIsize
= mapsize
;
272 for (i
= 0; i
< mapsize
; i
++) {
273 ctx
->Pixel
.MapItoI
[i
] = values
[i
];
276 case GL_PIXEL_MAP_I_TO_R
:
277 ctx
->Pixel
.MapItoRsize
= mapsize
;
278 for (i
= 0; i
< mapsize
; i
++) {
279 GLfloat val
= CLAMP( values
[i
], 0.0F
, 1.0F
);
280 ctx
->Pixel
.MapItoR
[i
] = val
;
281 ctx
->Pixel
.MapItoR8
[i
] = (GLint
) (val
* 255.0F
);
284 case GL_PIXEL_MAP_I_TO_G
:
285 ctx
->Pixel
.MapItoGsize
= mapsize
;
286 for (i
= 0; i
< mapsize
; i
++) {
287 GLfloat val
= CLAMP( values
[i
], 0.0F
, 1.0F
);
288 ctx
->Pixel
.MapItoG
[i
] = val
;
289 ctx
->Pixel
.MapItoG8
[i
] = (GLint
) (val
* 255.0F
);
292 case GL_PIXEL_MAP_I_TO_B
:
293 ctx
->Pixel
.MapItoBsize
= mapsize
;
294 for (i
= 0; i
< mapsize
; i
++) {
295 GLfloat val
= CLAMP( values
[i
], 0.0F
, 1.0F
);
296 ctx
->Pixel
.MapItoB
[i
] = val
;
297 ctx
->Pixel
.MapItoB8
[i
] = (GLint
) (val
* 255.0F
);
300 case GL_PIXEL_MAP_I_TO_A
:
301 ctx
->Pixel
.MapItoAsize
= mapsize
;
302 for (i
= 0; i
< mapsize
; i
++) {
303 GLfloat val
= CLAMP( values
[i
], 0.0F
, 1.0F
);
304 ctx
->Pixel
.MapItoA
[i
] = val
;
305 ctx
->Pixel
.MapItoA8
[i
] = (GLint
) (val
* 255.0F
);
308 case GL_PIXEL_MAP_R_TO_R
:
309 ctx
->Pixel
.MapRtoRsize
= mapsize
;
310 for (i
= 0; i
< mapsize
; i
++) {
311 ctx
->Pixel
.MapRtoR
[i
] = CLAMP( values
[i
], 0.0F
, 1.0F
);
314 case GL_PIXEL_MAP_G_TO_G
:
315 ctx
->Pixel
.MapGtoGsize
= mapsize
;
316 for (i
= 0; i
< mapsize
; i
++) {
317 ctx
->Pixel
.MapGtoG
[i
] = CLAMP( values
[i
], 0.0F
, 1.0F
);
320 case GL_PIXEL_MAP_B_TO_B
:
321 ctx
->Pixel
.MapBtoBsize
= mapsize
;
322 for (i
= 0; i
< mapsize
; i
++) {
323 ctx
->Pixel
.MapBtoB
[i
] = CLAMP( values
[i
], 0.0F
, 1.0F
);
326 case GL_PIXEL_MAP_A_TO_A
:
327 ctx
->Pixel
.MapAtoAsize
= mapsize
;
328 for (i
= 0; i
< mapsize
; i
++) {
329 ctx
->Pixel
.MapAtoA
[i
] = CLAMP( values
[i
], 0.0F
, 1.0F
);
333 _mesa_error( ctx
, GL_INVALID_ENUM
, "glPixelMap(map)" );
339 _mesa_PixelMapfv( GLenum map
, GLsizei mapsize
, const GLfloat
*values
)
341 GET_CURRENT_CONTEXT(ctx
);
342 ASSERT_OUTSIDE_BEGIN_END(ctx
);
344 /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */
345 if (mapsize
< 1 || mapsize
> MAX_PIXEL_MAP_TABLE
) {
346 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelMapfv(mapsize)" );
350 if (map
>= GL_PIXEL_MAP_S_TO_S
&& map
<= GL_PIXEL_MAP_I_TO_A
) {
351 /* test that mapsize is a power of two */
352 if (_mesa_bitcount((GLuint
) mapsize
) != 1) {
353 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelMapfv(mapsize)" );
358 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
360 if (ctx
->Unpack
.BufferObj
->Name
) {
361 /* unpack pixelmap from PBO */
363 /* Note, need to use DefaultPacking and Unpack's buffer object */
364 ctx
->DefaultPacking
.BufferObj
= ctx
->Unpack
.BufferObj
;
365 if (!_mesa_validate_pbo_access(1, &ctx
->DefaultPacking
, mapsize
, 1, 1,
366 GL_INTENSITY
, GL_FLOAT
, values
)) {
367 _mesa_error(ctx
, GL_INVALID_OPERATION
,
368 "glPixelMapfv(invalid PBO access)");
372 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
373 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
375 ctx
->Unpack
.BufferObj
);
377 /* buffer is already mapped - that's an error */
378 _mesa_error(ctx
, GL_INVALID_OPERATION
,
379 "glPixelMapfv(PBO is mapped)");
382 values
= (const GLfloat
*) ADD_POINTERS(buf
, values
);
388 pixelmap(ctx
, map
, mapsize
, values
);
390 if (ctx
->Unpack
.BufferObj
->Name
) {
391 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
392 ctx
->Unpack
.BufferObj
);
399 _mesa_PixelMapuiv(GLenum map
, GLsizei mapsize
, const GLuint
*values
)
401 GLfloat fvalues
[MAX_PIXEL_MAP_TABLE
];
402 GET_CURRENT_CONTEXT(ctx
);
403 ASSERT_OUTSIDE_BEGIN_END(ctx
);
405 if (mapsize
< 1 || mapsize
> MAX_PIXEL_MAP_TABLE
) {
406 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelMapuiv(mapsize)" );
410 if (map
>= GL_PIXEL_MAP_S_TO_S
&& map
<= GL_PIXEL_MAP_I_TO_A
) {
411 /* test that mapsize is a power of two */
412 if (_mesa_bitcount((GLuint
) mapsize
) != 1) {
413 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelMapuiv(mapsize)" );
418 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
420 if (ctx
->Unpack
.BufferObj
->Name
) {
421 /* unpack pixelmap from PBO */
423 /* Note, need to use DefaultPacking and Unpack's buffer object */
424 ctx
->DefaultPacking
.BufferObj
= ctx
->Unpack
.BufferObj
;
425 if (!_mesa_validate_pbo_access(1, &ctx
->DefaultPacking
, mapsize
, 1, 1,
426 GL_INTENSITY
, GL_UNSIGNED_INT
, values
)) {
427 _mesa_error(ctx
, GL_INVALID_OPERATION
,
428 "glPixelMapuiv(invalid PBO access)");
432 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
433 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
435 ctx
->Unpack
.BufferObj
);
437 /* buffer is already mapped - that's an error */
438 _mesa_error(ctx
, GL_INVALID_OPERATION
,
439 "glPixelMapuiv(PBO is mapped)");
442 values
= (const GLuint
*) ADD_POINTERS(buf
, values
);
448 /* convert to floats */
449 if (map
== GL_PIXEL_MAP_I_TO_I
|| map
== GL_PIXEL_MAP_S_TO_S
) {
451 for (i
= 0; i
< mapsize
; i
++) {
452 fvalues
[i
] = (GLfloat
) values
[i
];
457 for (i
= 0; i
< mapsize
; i
++) {
458 fvalues
[i
] = UINT_TO_FLOAT( values
[i
] );
462 if (ctx
->Unpack
.BufferObj
->Name
) {
463 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
464 ctx
->Unpack
.BufferObj
);
467 pixelmap(ctx
, map
, mapsize
, fvalues
);
473 _mesa_PixelMapusv(GLenum map
, GLsizei mapsize
, const GLushort
*values
)
475 GLfloat fvalues
[MAX_PIXEL_MAP_TABLE
];
476 GET_CURRENT_CONTEXT(ctx
);
477 ASSERT_OUTSIDE_BEGIN_END(ctx
);
479 if (mapsize
< 1 || mapsize
> MAX_PIXEL_MAP_TABLE
) {
480 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelMapusv(mapsize)" );
484 if (map
>= GL_PIXEL_MAP_S_TO_S
&& map
<= GL_PIXEL_MAP_I_TO_A
) {
485 /* test that mapsize is a power of two */
486 if (_mesa_bitcount((GLuint
) mapsize
) != 1) {
487 _mesa_error( ctx
, GL_INVALID_VALUE
, "glPixelMapuiv(mapsize)" );
492 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
494 if (ctx
->Unpack
.BufferObj
->Name
) {
495 /* unpack pixelmap from PBO */
497 /* Note, need to use DefaultPacking and Unpack's buffer object */
498 ctx
->DefaultPacking
.BufferObj
= ctx
->Unpack
.BufferObj
;
499 if (!_mesa_validate_pbo_access(1, &ctx
->DefaultPacking
, mapsize
, 1, 1,
500 GL_INTENSITY
, GL_UNSIGNED_SHORT
,
502 _mesa_error(ctx
, GL_INVALID_OPERATION
,
503 "glPixelMapusv(invalid PBO access)");
507 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
508 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
510 ctx
->Unpack
.BufferObj
);
512 /* buffer is already mapped - that's an error */
513 _mesa_error(ctx
, GL_INVALID_OPERATION
,
514 "glPixelMapusv(PBO is mapped)");
517 values
= (const GLushort
*) ADD_POINTERS(buf
, values
);
523 /* convert to floats */
524 if (map
== GL_PIXEL_MAP_I_TO_I
|| map
== GL_PIXEL_MAP_S_TO_S
) {
526 for (i
= 0; i
< mapsize
; i
++) {
527 fvalues
[i
] = (GLfloat
) values
[i
];
532 for (i
= 0; i
< mapsize
; i
++) {
533 fvalues
[i
] = USHORT_TO_FLOAT( values
[i
] );
537 if (ctx
->Unpack
.BufferObj
->Name
) {
538 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
539 ctx
->Unpack
.BufferObj
);
542 pixelmap(ctx
, map
, mapsize
, fvalues
);
547 * Return size of the named map.
550 get_map_size(GLcontext
*ctx
, GLenum map
)
553 case GL_PIXEL_MAP_I_TO_I
:
554 return ctx
->Pixel
.MapItoIsize
;
555 case GL_PIXEL_MAP_S_TO_S
:
556 return ctx
->Pixel
.MapStoSsize
;
557 case GL_PIXEL_MAP_I_TO_R
:
558 return ctx
->Pixel
.MapItoRsize
;
559 case GL_PIXEL_MAP_I_TO_G
:
560 return ctx
->Pixel
.MapItoGsize
;
561 case GL_PIXEL_MAP_I_TO_B
:
562 return ctx
->Pixel
.MapItoBsize
;
563 case GL_PIXEL_MAP_I_TO_A
:
564 return ctx
->Pixel
.MapItoAsize
;
565 case GL_PIXEL_MAP_R_TO_R
:
566 return ctx
->Pixel
.MapRtoRsize
;
567 case GL_PIXEL_MAP_G_TO_G
:
568 return ctx
->Pixel
.MapGtoGsize
;
569 case GL_PIXEL_MAP_B_TO_B
:
570 return ctx
->Pixel
.MapBtoBsize
;
571 case GL_PIXEL_MAP_A_TO_A
:
572 return ctx
->Pixel
.MapAtoAsize
;
580 _mesa_GetPixelMapfv( GLenum map
, GLfloat
*values
)
582 GET_CURRENT_CONTEXT(ctx
);
584 ASSERT_OUTSIDE_BEGIN_END(ctx
);
586 mapsize
= get_map_size(ctx
, map
);
588 if (ctx
->Pack
.BufferObj
->Name
) {
589 /* pack pixelmap into PBO */
591 /* Note, need to use DefaultPacking and Pack's buffer object */
592 ctx
->DefaultPacking
.BufferObj
= ctx
->Pack
.BufferObj
;
593 if (!_mesa_validate_pbo_access(1, &ctx
->DefaultPacking
, mapsize
, 1, 1,
594 GL_INTENSITY
, GL_FLOAT
, values
)) {
595 _mesa_error(ctx
, GL_INVALID_OPERATION
,
596 "glGetPixelMapfv(invalid PBO access)");
600 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
601 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
603 ctx
->Pack
.BufferObj
);
605 /* buffer is already mapped - that's an error */
606 _mesa_error(ctx
, GL_INVALID_OPERATION
,
607 "glGetPixelMapfv(PBO is mapped)");
610 values
= (GLfloat
*) ADD_POINTERS(buf
, values
);
617 case GL_PIXEL_MAP_I_TO_I
:
618 MEMCPY(values
, ctx
->Pixel
.MapItoI
, mapsize
* sizeof(GLfloat
));
620 case GL_PIXEL_MAP_S_TO_S
:
621 for (i
= 0; i
< mapsize
; i
++) {
622 values
[i
] = (GLfloat
) ctx
->Pixel
.MapStoS
[i
];
625 case GL_PIXEL_MAP_I_TO_R
:
626 MEMCPY(values
, ctx
->Pixel
.MapItoR
, mapsize
* sizeof(GLfloat
));
628 case GL_PIXEL_MAP_I_TO_G
:
629 MEMCPY(values
, ctx
->Pixel
.MapItoG
, mapsize
* sizeof(GLfloat
));
631 case GL_PIXEL_MAP_I_TO_B
:
632 MEMCPY(values
, ctx
->Pixel
.MapItoB
, mapsize
* sizeof(GLfloat
));
634 case GL_PIXEL_MAP_I_TO_A
:
635 MEMCPY(values
, ctx
->Pixel
.MapItoA
, mapsize
* sizeof(GLfloat
));
637 case GL_PIXEL_MAP_R_TO_R
:
638 MEMCPY(values
, ctx
->Pixel
.MapRtoR
, mapsize
* sizeof(GLfloat
));
640 case GL_PIXEL_MAP_G_TO_G
:
641 MEMCPY(values
, ctx
->Pixel
.MapGtoG
, mapsize
* sizeof(GLfloat
));
643 case GL_PIXEL_MAP_B_TO_B
:
644 MEMCPY(values
, ctx
->Pixel
.MapBtoB
, mapsize
* sizeof(GLfloat
));
646 case GL_PIXEL_MAP_A_TO_A
:
647 MEMCPY(values
, ctx
->Pixel
.MapAtoA
, mapsize
* sizeof(GLfloat
));
650 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetPixelMapfv" );
653 if (ctx
->Pack
.BufferObj
->Name
) {
654 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
655 ctx
->Pack
.BufferObj
);
661 _mesa_GetPixelMapuiv( GLenum map
, GLuint
*values
)
663 GET_CURRENT_CONTEXT(ctx
);
665 ASSERT_OUTSIDE_BEGIN_END(ctx
);
667 mapsize
= get_map_size(ctx
, map
);
669 if (ctx
->Pack
.BufferObj
->Name
) {
670 /* pack pixelmap into PBO */
672 /* Note, need to use DefaultPacking and Pack's buffer object */
673 ctx
->DefaultPacking
.BufferObj
= ctx
->Pack
.BufferObj
;
674 if (!_mesa_validate_pbo_access(1, &ctx
->DefaultPacking
, mapsize
, 1, 1,
675 GL_INTENSITY
, GL_UNSIGNED_INT
, values
)) {
676 _mesa_error(ctx
, GL_INVALID_OPERATION
,
677 "glGetPixelMapuiv(invalid PBO access)");
681 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
682 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
684 ctx
->Pack
.BufferObj
);
686 /* buffer is already mapped - that's an error */
687 _mesa_error(ctx
, GL_INVALID_OPERATION
,
688 "glGetPixelMapuiv(PBO is mapped)");
691 values
= (GLuint
*) ADD_POINTERS(buf
, values
);
698 case GL_PIXEL_MAP_I_TO_I
:
699 for (i
= 0; i
< mapsize
; i
++) {
700 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapItoI
[i
] );
703 case GL_PIXEL_MAP_S_TO_S
:
704 MEMCPY(values
, ctx
->Pixel
.MapStoS
, mapsize
* sizeof(GLint
));
706 case GL_PIXEL_MAP_I_TO_R
:
707 for (i
= 0; i
< mapsize
; i
++) {
708 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapItoR
[i
] );
711 case GL_PIXEL_MAP_I_TO_G
:
712 for (i
= 0; i
< mapsize
; i
++) {
713 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapItoG
[i
] );
716 case GL_PIXEL_MAP_I_TO_B
:
717 for (i
= 0; i
< mapsize
; i
++) {
718 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapItoB
[i
] );
721 case GL_PIXEL_MAP_I_TO_A
:
722 for (i
= 0; i
< mapsize
; i
++) {
723 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapItoA
[i
] );
726 case GL_PIXEL_MAP_R_TO_R
:
727 for (i
= 0; i
< mapsize
; i
++) {
728 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapRtoR
[i
] );
731 case GL_PIXEL_MAP_G_TO_G
:
732 for (i
= 0; i
< mapsize
; i
++) {
733 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapGtoG
[i
] );
736 case GL_PIXEL_MAP_B_TO_B
:
737 for (i
= 0; i
< mapsize
; i
++) {
738 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapBtoB
[i
] );
741 case GL_PIXEL_MAP_A_TO_A
:
742 for (i
= 0; i
< mapsize
; i
++) {
743 values
[i
] = FLOAT_TO_UINT( ctx
->Pixel
.MapAtoA
[i
] );
747 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetPixelMapfv" );
750 if (ctx
->Pack
.BufferObj
->Name
) {
751 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
752 ctx
->Pack
.BufferObj
);
758 _mesa_GetPixelMapusv( GLenum map
, GLushort
*values
)
760 GET_CURRENT_CONTEXT(ctx
);
762 ASSERT_OUTSIDE_BEGIN_END(ctx
);
764 mapsize
= get_map_size(ctx
, map
);
766 if (ctx
->Pack
.BufferObj
->Name
) {
767 /* pack pixelmap into PBO */
769 /* Note, need to use DefaultPacking and Pack's buffer object */
770 ctx
->DefaultPacking
.BufferObj
= ctx
->Pack
.BufferObj
;
771 if (!_mesa_validate_pbo_access(1, &ctx
->DefaultPacking
, mapsize
, 1, 1,
772 GL_INTENSITY
, GL_UNSIGNED_SHORT
,
774 _mesa_error(ctx
, GL_INVALID_OPERATION
,
775 "glGetPixelMapusv(invalid PBO access)");
779 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
780 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
782 ctx
->Pack
.BufferObj
);
784 /* buffer is already mapped - that's an error */
785 _mesa_error(ctx
, GL_INVALID_OPERATION
,
786 "glGetPixelMapusv(PBO is mapped)");
789 values
= (GLushort
*) ADD_POINTERS(buf
, values
);
796 case GL_PIXEL_MAP_I_TO_I
:
797 for (i
= 0; i
< mapsize
; i
++) {
798 values
[i
] = (GLushort
) CLAMP(ctx
->Pixel
.MapItoI
[i
], 0.0, 65535.0);
801 case GL_PIXEL_MAP_S_TO_S
:
802 for (i
= 0; i
< mapsize
; i
++) {
803 values
[i
] = (GLushort
) CLAMP(ctx
->Pixel
.MapStoS
[i
], 0.0, 65535.0);
806 case GL_PIXEL_MAP_I_TO_R
:
807 for (i
= 0; i
< mapsize
; i
++) {
808 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapItoR
[i
] );
811 case GL_PIXEL_MAP_I_TO_G
:
812 for (i
= 0; i
< mapsize
; i
++) {
813 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapItoG
[i
] );
816 case GL_PIXEL_MAP_I_TO_B
:
817 for (i
= 0; i
< mapsize
; i
++) {
818 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapItoB
[i
] );
821 case GL_PIXEL_MAP_I_TO_A
:
822 for (i
= 0; i
< mapsize
; i
++) {
823 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapItoA
[i
] );
826 case GL_PIXEL_MAP_R_TO_R
:
827 for (i
= 0; i
< mapsize
; i
++) {
828 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapRtoR
[i
] );
831 case GL_PIXEL_MAP_G_TO_G
:
832 for (i
= 0; i
< mapsize
; i
++) {
833 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapGtoG
[i
] );
836 case GL_PIXEL_MAP_B_TO_B
:
837 for (i
= 0; i
< mapsize
; i
++) {
838 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapBtoB
[i
] );
841 case GL_PIXEL_MAP_A_TO_A
:
842 for (i
= 0; i
< mapsize
; i
++) {
843 CLAMPED_FLOAT_TO_USHORT(values
[i
] , ctx
->Pixel
.MapAtoA
[i
] );
847 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetPixelMapfv" );
850 if (ctx
->Pack
.BufferObj
->Name
) {
851 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
852 ctx
->Pack
.BufferObj
);
858 /**********************************************************************/
859 /***** glPixelTransfer *****/
860 /**********************************************************************/
864 * Implements glPixelTransfer[fi] whether called immediately or from a
868 _mesa_PixelTransferf( GLenum pname
, GLfloat param
)
870 GET_CURRENT_CONTEXT(ctx
);
871 ASSERT_OUTSIDE_BEGIN_END(ctx
);
875 if (ctx
->Pixel
.MapColorFlag
== (param
? GL_TRUE
: GL_FALSE
))
877 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
878 ctx
->Pixel
.MapColorFlag
= param
? GL_TRUE
: GL_FALSE
;
881 if (ctx
->Pixel
.MapStencilFlag
== (param
? GL_TRUE
: GL_FALSE
))
883 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
884 ctx
->Pixel
.MapStencilFlag
= param
? GL_TRUE
: GL_FALSE
;
887 if (ctx
->Pixel
.IndexShift
== (GLint
) param
)
889 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
890 ctx
->Pixel
.IndexShift
= (GLint
) param
;
892 case GL_INDEX_OFFSET
:
893 if (ctx
->Pixel
.IndexOffset
== (GLint
) param
)
895 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
896 ctx
->Pixel
.IndexOffset
= (GLint
) param
;
899 if (ctx
->Pixel
.RedScale
== param
)
901 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
902 ctx
->Pixel
.RedScale
= param
;
905 if (ctx
->Pixel
.RedBias
== param
)
907 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
908 ctx
->Pixel
.RedBias
= param
;
911 if (ctx
->Pixel
.GreenScale
== param
)
913 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
914 ctx
->Pixel
.GreenScale
= param
;
917 if (ctx
->Pixel
.GreenBias
== param
)
919 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
920 ctx
->Pixel
.GreenBias
= param
;
923 if (ctx
->Pixel
.BlueScale
== param
)
925 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
926 ctx
->Pixel
.BlueScale
= param
;
929 if (ctx
->Pixel
.BlueBias
== param
)
931 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
932 ctx
->Pixel
.BlueBias
= param
;
935 if (ctx
->Pixel
.AlphaScale
== param
)
937 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
938 ctx
->Pixel
.AlphaScale
= param
;
941 if (ctx
->Pixel
.AlphaBias
== param
)
943 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
944 ctx
->Pixel
.AlphaBias
= param
;
947 if (ctx
->Pixel
.DepthScale
== param
)
949 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
950 ctx
->Pixel
.DepthScale
= param
;
953 if (ctx
->Pixel
.DepthBias
== param
)
955 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
956 ctx
->Pixel
.DepthBias
= param
;
958 case GL_POST_COLOR_MATRIX_RED_SCALE
:
959 if (ctx
->Pixel
.PostColorMatrixScale
[0] == param
)
961 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
962 ctx
->Pixel
.PostColorMatrixScale
[0] = param
;
964 case GL_POST_COLOR_MATRIX_RED_BIAS
:
965 if (ctx
->Pixel
.PostColorMatrixBias
[0] == param
)
967 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
968 ctx
->Pixel
.PostColorMatrixBias
[0] = param
;
970 case GL_POST_COLOR_MATRIX_GREEN_SCALE
:
971 if (ctx
->Pixel
.PostColorMatrixScale
[1] == param
)
973 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
974 ctx
->Pixel
.PostColorMatrixScale
[1] = param
;
976 case GL_POST_COLOR_MATRIX_GREEN_BIAS
:
977 if (ctx
->Pixel
.PostColorMatrixBias
[1] == param
)
979 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
980 ctx
->Pixel
.PostColorMatrixBias
[1] = param
;
982 case GL_POST_COLOR_MATRIX_BLUE_SCALE
:
983 if (ctx
->Pixel
.PostColorMatrixScale
[2] == param
)
985 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
986 ctx
->Pixel
.PostColorMatrixScale
[2] = param
;
988 case GL_POST_COLOR_MATRIX_BLUE_BIAS
:
989 if (ctx
->Pixel
.PostColorMatrixBias
[2] == param
)
991 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
992 ctx
->Pixel
.PostColorMatrixBias
[2] = param
;
994 case GL_POST_COLOR_MATRIX_ALPHA_SCALE
:
995 if (ctx
->Pixel
.PostColorMatrixScale
[3] == param
)
997 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
998 ctx
->Pixel
.PostColorMatrixScale
[3] = param
;
1000 case GL_POST_COLOR_MATRIX_ALPHA_BIAS
:
1001 if (ctx
->Pixel
.PostColorMatrixBias
[3] == param
)
1003 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1004 ctx
->Pixel
.PostColorMatrixBias
[3] = param
;
1006 case GL_POST_CONVOLUTION_RED_SCALE
:
1007 if (ctx
->Pixel
.PostConvolutionScale
[0] == param
)
1009 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1010 ctx
->Pixel
.PostConvolutionScale
[0] = param
;
1012 case GL_POST_CONVOLUTION_RED_BIAS
:
1013 if (ctx
->Pixel
.PostConvolutionBias
[0] == param
)
1015 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1016 ctx
->Pixel
.PostConvolutionBias
[0] = param
;
1018 case GL_POST_CONVOLUTION_GREEN_SCALE
:
1019 if (ctx
->Pixel
.PostConvolutionScale
[1] == param
)
1021 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1022 ctx
->Pixel
.PostConvolutionScale
[1] = param
;
1024 case GL_POST_CONVOLUTION_GREEN_BIAS
:
1025 if (ctx
->Pixel
.PostConvolutionBias
[1] == param
)
1027 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1028 ctx
->Pixel
.PostConvolutionBias
[1] = param
;
1030 case GL_POST_CONVOLUTION_BLUE_SCALE
:
1031 if (ctx
->Pixel
.PostConvolutionScale
[2] == param
)
1033 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1034 ctx
->Pixel
.PostConvolutionScale
[2] = param
;
1036 case GL_POST_CONVOLUTION_BLUE_BIAS
:
1037 if (ctx
->Pixel
.PostConvolutionBias
[2] == param
)
1039 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1040 ctx
->Pixel
.PostConvolutionBias
[2] = param
;
1042 case GL_POST_CONVOLUTION_ALPHA_SCALE
:
1043 if (ctx
->Pixel
.PostConvolutionScale
[3] == param
)
1045 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1046 ctx
->Pixel
.PostConvolutionScale
[3] = param
;
1048 case GL_POST_CONVOLUTION_ALPHA_BIAS
:
1049 if (ctx
->Pixel
.PostConvolutionBias
[3] == param
)
1051 FLUSH_VERTICES(ctx
, _NEW_PIXEL
);
1052 ctx
->Pixel
.PostConvolutionBias
[3] = param
;
1055 _mesa_error( ctx
, GL_INVALID_ENUM
, "glPixelTransfer(pname)" );
1062 _mesa_PixelTransferi( GLenum pname
, GLint param
)
1064 _mesa_PixelTransferf( pname
, (GLfloat
) param
);
1069 /**********************************************************************/
1070 /***** Pixel processing functions ******/
1071 /**********************************************************************/
1074 * Apply scale and bias factors to an array of RGBA pixels.
1077 _mesa_scale_and_bias_rgba(GLuint n
, GLfloat rgba
[][4],
1078 GLfloat rScale
, GLfloat gScale
,
1079 GLfloat bScale
, GLfloat aScale
,
1080 GLfloat rBias
, GLfloat gBias
,
1081 GLfloat bBias
, GLfloat aBias
)
1083 if (rScale
!= 1.0 || rBias
!= 0.0) {
1085 for (i
= 0; i
< n
; i
++) {
1086 rgba
[i
][RCOMP
] = rgba
[i
][RCOMP
] * rScale
+ rBias
;
1089 if (gScale
!= 1.0 || gBias
!= 0.0) {
1091 for (i
= 0; i
< n
; i
++) {
1092 rgba
[i
][GCOMP
] = rgba
[i
][GCOMP
] * gScale
+ gBias
;
1095 if (bScale
!= 1.0 || bBias
!= 0.0) {
1097 for (i
= 0; i
< n
; i
++) {
1098 rgba
[i
][BCOMP
] = rgba
[i
][BCOMP
] * bScale
+ bBias
;
1101 if (aScale
!= 1.0 || aBias
!= 0.0) {
1103 for (i
= 0; i
< n
; i
++) {
1104 rgba
[i
][ACOMP
] = rgba
[i
][ACOMP
] * aScale
+ aBias
;
1111 * Apply pixel mapping to an array of floating point RGBA pixels.
1114 _mesa_map_rgba( const GLcontext
*ctx
, GLuint n
, GLfloat rgba
[][4] )
1116 const GLfloat rscale
= (GLfloat
) (ctx
->Pixel
.MapRtoRsize
- 1);
1117 const GLfloat gscale
= (GLfloat
) (ctx
->Pixel
.MapGtoGsize
- 1);
1118 const GLfloat bscale
= (GLfloat
) (ctx
->Pixel
.MapBtoBsize
- 1);
1119 const GLfloat ascale
= (GLfloat
) (ctx
->Pixel
.MapAtoAsize
- 1);
1120 const GLfloat
*rMap
= ctx
->Pixel
.MapRtoR
;
1121 const GLfloat
*gMap
= ctx
->Pixel
.MapGtoG
;
1122 const GLfloat
*bMap
= ctx
->Pixel
.MapBtoB
;
1123 const GLfloat
*aMap
= ctx
->Pixel
.MapAtoA
;
1126 GLfloat r
= CLAMP(rgba
[i
][RCOMP
], 0.0F
, 1.0F
);
1127 GLfloat g
= CLAMP(rgba
[i
][GCOMP
], 0.0F
, 1.0F
);
1128 GLfloat b
= CLAMP(rgba
[i
][BCOMP
], 0.0F
, 1.0F
);
1129 GLfloat a
= CLAMP(rgba
[i
][ACOMP
], 0.0F
, 1.0F
);
1130 rgba
[i
][RCOMP
] = rMap
[IROUND(r
* rscale
)];
1131 rgba
[i
][GCOMP
] = gMap
[IROUND(g
* gscale
)];
1132 rgba
[i
][BCOMP
] = bMap
[IROUND(b
* bscale
)];
1133 rgba
[i
][ACOMP
] = aMap
[IROUND(a
* ascale
)];
1139 * Apply the color matrix and post color matrix scaling and biasing.
1142 _mesa_transform_rgba(const GLcontext
*ctx
, GLuint n
, GLfloat rgba
[][4])
1144 const GLfloat rs
= ctx
->Pixel
.PostColorMatrixScale
[0];
1145 const GLfloat rb
= ctx
->Pixel
.PostColorMatrixBias
[0];
1146 const GLfloat gs
= ctx
->Pixel
.PostColorMatrixScale
[1];
1147 const GLfloat gb
= ctx
->Pixel
.PostColorMatrixBias
[1];
1148 const GLfloat bs
= ctx
->Pixel
.PostColorMatrixScale
[2];
1149 const GLfloat bb
= ctx
->Pixel
.PostColorMatrixBias
[2];
1150 const GLfloat as
= ctx
->Pixel
.PostColorMatrixScale
[3];
1151 const GLfloat ab
= ctx
->Pixel
.PostColorMatrixBias
[3];
1152 const GLfloat
*m
= ctx
->ColorMatrixStack
.Top
->m
;
1154 for (i
= 0; i
< n
; i
++) {
1155 const GLfloat r
= rgba
[i
][RCOMP
];
1156 const GLfloat g
= rgba
[i
][GCOMP
];
1157 const GLfloat b
= rgba
[i
][BCOMP
];
1158 const GLfloat a
= rgba
[i
][ACOMP
];
1159 rgba
[i
][RCOMP
] = (m
[0] * r
+ m
[4] * g
+ m
[ 8] * b
+ m
[12] * a
) * rs
+ rb
;
1160 rgba
[i
][GCOMP
] = (m
[1] * r
+ m
[5] * g
+ m
[ 9] * b
+ m
[13] * a
) * gs
+ gb
;
1161 rgba
[i
][BCOMP
] = (m
[2] * r
+ m
[6] * g
+ m
[10] * b
+ m
[14] * a
) * bs
+ bb
;
1162 rgba
[i
][ACOMP
] = (m
[3] * r
+ m
[7] * g
+ m
[11] * b
+ m
[15] * a
) * as
+ ab
;
1168 * Apply a color table lookup to an array of floating point RGBA colors.
1171 _mesa_lookup_rgba_float(const struct gl_color_table
*table
,
1172 GLuint n
, GLfloat rgba
[][4])
1174 const GLint max
= table
->Size
- 1;
1175 const GLfloat scale
= (GLfloat
) max
;
1176 const GLfloat
*lut
= table
->TableF
;
1179 if (!table
->TableF
|| table
->Size
== 0)
1182 switch (table
->_BaseFormat
) {
1184 /* replace RGBA with I */
1185 for (i
= 0; i
< n
; i
++) {
1186 GLint j
= IROUND(rgba
[i
][RCOMP
] * scale
);
1187 GLfloat c
= lut
[CLAMP(j
, 0, max
)];
1195 /* replace RGB with L */
1196 for (i
= 0; i
< n
; i
++) {
1197 GLint j
= IROUND(rgba
[i
][RCOMP
] * scale
);
1198 GLfloat c
= lut
[CLAMP(j
, 0, max
)];
1205 /* replace A with A */
1206 for (i
= 0; i
< n
; i
++) {
1207 GLint j
= IROUND(rgba
[i
][ACOMP
] * scale
);
1208 rgba
[i
][ACOMP
] = lut
[CLAMP(j
, 0, max
)];
1211 case GL_LUMINANCE_ALPHA
:
1212 /* replace RGBA with LLLA */
1213 for (i
= 0; i
< n
; i
++) {
1214 GLint jL
= IROUND(rgba
[i
][RCOMP
] * scale
);
1215 GLint jA
= IROUND(rgba
[i
][ACOMP
] * scale
);
1216 GLfloat luminance
, alpha
;
1217 jL
= CLAMP(jL
, 0, max
);
1218 jA
= CLAMP(jA
, 0, max
);
1219 luminance
= lut
[jL
* 2 + 0];
1220 alpha
= lut
[jA
* 2 + 1];
1223 rgba
[i
][BCOMP
] = luminance
;
1224 rgba
[i
][ACOMP
] = alpha
;;
1228 /* replace RGB with RGB */
1229 for (i
= 0; i
< n
; i
++) {
1230 GLint jR
= IROUND(rgba
[i
][RCOMP
] * scale
);
1231 GLint jG
= IROUND(rgba
[i
][GCOMP
] * scale
);
1232 GLint jB
= IROUND(rgba
[i
][BCOMP
] * scale
);
1233 jR
= CLAMP(jR
, 0, max
);
1234 jG
= CLAMP(jG
, 0, max
);
1235 jB
= CLAMP(jB
, 0, max
);
1236 rgba
[i
][RCOMP
] = lut
[jR
* 3 + 0];
1237 rgba
[i
][GCOMP
] = lut
[jG
* 3 + 1];
1238 rgba
[i
][BCOMP
] = lut
[jB
* 3 + 2];
1242 /* replace RGBA with RGBA */
1243 for (i
= 0; i
< n
; i
++) {
1244 GLint jR
= IROUND(rgba
[i
][RCOMP
] * scale
);
1245 GLint jG
= IROUND(rgba
[i
][GCOMP
] * scale
);
1246 GLint jB
= IROUND(rgba
[i
][BCOMP
] * scale
);
1247 GLint jA
= IROUND(rgba
[i
][ACOMP
] * scale
);
1248 jR
= CLAMP(jR
, 0, max
);
1249 jG
= CLAMP(jG
, 0, max
);
1250 jB
= CLAMP(jB
, 0, max
);
1251 jA
= CLAMP(jA
, 0, max
);
1252 rgba
[i
][RCOMP
] = lut
[jR
* 4 + 0];
1253 rgba
[i
][GCOMP
] = lut
[jG
* 4 + 1];
1254 rgba
[i
][BCOMP
] = lut
[jB
* 4 + 2];
1255 rgba
[i
][ACOMP
] = lut
[jA
* 4 + 3];
1259 _mesa_problem(NULL
, "Bad format in _mesa_lookup_rgba_float");
1267 * Apply a color table lookup to an array of ubyte/RGBA colors.
1270 _mesa_lookup_rgba_ubyte(const struct gl_color_table
*table
,
1271 GLuint n
, GLubyte rgba
[][4])
1273 const GLubyte
*lut
= table
->TableUB
;
1274 const GLfloat scale
= (GLfloat
) (table
->Size
- 1) / 255.0;
1277 if (!table
->TableUB
|| table
->Size
== 0)
1280 switch (table
->_BaseFormat
) {
1282 /* replace RGBA with I */
1283 if (table
->Size
== 256) {
1284 for (i
= 0; i
< n
; i
++) {
1285 const GLubyte c
= lut
[rgba
[i
][RCOMP
]];
1293 for (i
= 0; i
< n
; i
++) {
1294 GLint j
= IROUND((GLfloat
) rgba
[i
][RCOMP
] * scale
);
1298 rgba
[i
][ACOMP
] = lut
[j
];
1303 /* replace RGB with L */
1304 if (table
->Size
== 256) {
1305 for (i
= 0; i
< n
; i
++) {
1306 const GLubyte c
= lut
[rgba
[i
][RCOMP
]];
1313 for (i
= 0; i
< n
; i
++) {
1314 GLint j
= IROUND((GLfloat
) rgba
[i
][RCOMP
] * scale
);
1317 rgba
[i
][BCOMP
] = lut
[j
];
1322 /* replace A with A */
1323 if (table
->Size
== 256) {
1324 for (i
= 0; i
< n
; i
++) {
1325 rgba
[i
][ACOMP
] = lut
[rgba
[i
][ACOMP
]];
1329 for (i
= 0; i
< n
; i
++) {
1330 GLint j
= IROUND((GLfloat
) rgba
[i
][ACOMP
] * scale
);
1331 rgba
[i
][ACOMP
] = lut
[j
];
1335 case GL_LUMINANCE_ALPHA
:
1336 /* replace RGBA with LLLA */
1337 if (table
->Size
== 256) {
1338 for (i
= 0; i
< n
; i
++) {
1339 GLubyte l
= lut
[rgba
[i
][RCOMP
] * 2 + 0];
1340 GLubyte a
= lut
[rgba
[i
][ACOMP
] * 2 + 1];;
1348 for (i
= 0; i
< n
; i
++) {
1349 GLint jL
= IROUND((GLfloat
) rgba
[i
][RCOMP
] * scale
);
1350 GLint jA
= IROUND((GLfloat
) rgba
[i
][ACOMP
] * scale
);
1351 GLubyte luminance
= lut
[jL
* 2 + 0];
1352 GLubyte alpha
= lut
[jA
* 2 + 1];
1355 rgba
[i
][BCOMP
] = luminance
;
1356 rgba
[i
][ACOMP
] = alpha
;
1361 if (table
->Size
== 256) {
1362 for (i
= 0; i
< n
; i
++) {
1363 rgba
[i
][RCOMP
] = lut
[rgba
[i
][RCOMP
] * 3 + 0];
1364 rgba
[i
][GCOMP
] = lut
[rgba
[i
][GCOMP
] * 3 + 1];
1365 rgba
[i
][BCOMP
] = lut
[rgba
[i
][BCOMP
] * 3 + 2];
1369 for (i
= 0; i
< n
; i
++) {
1370 GLint jR
= IROUND((GLfloat
) rgba
[i
][RCOMP
] * scale
);
1371 GLint jG
= IROUND((GLfloat
) rgba
[i
][GCOMP
] * scale
);
1372 GLint jB
= IROUND((GLfloat
) rgba
[i
][BCOMP
] * scale
);
1373 rgba
[i
][RCOMP
] = lut
[jR
* 3 + 0];
1374 rgba
[i
][GCOMP
] = lut
[jG
* 3 + 1];
1375 rgba
[i
][BCOMP
] = lut
[jB
* 3 + 2];
1380 if (table
->Size
== 256) {
1381 for (i
= 0; i
< n
; i
++) {
1382 rgba
[i
][RCOMP
] = lut
[rgba
[i
][RCOMP
] * 4 + 0];
1383 rgba
[i
][GCOMP
] = lut
[rgba
[i
][GCOMP
] * 4 + 1];
1384 rgba
[i
][BCOMP
] = lut
[rgba
[i
][BCOMP
] * 4 + 2];
1385 rgba
[i
][ACOMP
] = lut
[rgba
[i
][ACOMP
] * 4 + 3];
1389 for (i
= 0; i
< n
; i
++) {
1390 GLint jR
= IROUND((GLfloat
) rgba
[i
][RCOMP
] * scale
);
1391 GLint jG
= IROUND((GLfloat
) rgba
[i
][GCOMP
] * scale
);
1392 GLint jB
= IROUND((GLfloat
) rgba
[i
][BCOMP
] * scale
);
1393 GLint jA
= IROUND((GLfloat
) rgba
[i
][ACOMP
] * scale
);
1394 CLAMPED_FLOAT_TO_CHAN(rgba
[i
][RCOMP
], lut
[jR
* 4 + 0]);
1395 CLAMPED_FLOAT_TO_CHAN(rgba
[i
][GCOMP
], lut
[jG
* 4 + 1]);
1396 CLAMPED_FLOAT_TO_CHAN(rgba
[i
][BCOMP
], lut
[jB
* 4 + 2]);
1397 CLAMPED_FLOAT_TO_CHAN(rgba
[i
][ACOMP
], lut
[jA
* 4 + 3]);
1402 _mesa_problem(NULL
, "Bad format in _mesa_lookup_rgba_chan");
1410 * Map color indexes to float rgba values.
1413 _mesa_map_ci_to_rgba( const GLcontext
*ctx
, GLuint n
,
1414 const GLuint index
[], GLfloat rgba
[][4] )
1416 GLuint rmask
= ctx
->Pixel
.MapItoRsize
- 1;
1417 GLuint gmask
= ctx
->Pixel
.MapItoGsize
- 1;
1418 GLuint bmask
= ctx
->Pixel
.MapItoBsize
- 1;
1419 GLuint amask
= ctx
->Pixel
.MapItoAsize
- 1;
1420 const GLfloat
*rMap
= ctx
->Pixel
.MapItoR
;
1421 const GLfloat
*gMap
= ctx
->Pixel
.MapItoG
;
1422 const GLfloat
*bMap
= ctx
->Pixel
.MapItoB
;
1423 const GLfloat
*aMap
= ctx
->Pixel
.MapItoA
;
1426 rgba
[i
][RCOMP
] = rMap
[index
[i
] & rmask
];
1427 rgba
[i
][GCOMP
] = gMap
[index
[i
] & gmask
];
1428 rgba
[i
][BCOMP
] = bMap
[index
[i
] & bmask
];
1429 rgba
[i
][ACOMP
] = aMap
[index
[i
] & amask
];
1435 * Map ubyte color indexes to ubyte/RGBA values.
1438 _mesa_map_ci8_to_rgba8(const GLcontext
*ctx
, GLuint n
, const GLubyte index
[],
1441 GLuint rmask
= ctx
->Pixel
.MapItoRsize
- 1;
1442 GLuint gmask
= ctx
->Pixel
.MapItoGsize
- 1;
1443 GLuint bmask
= ctx
->Pixel
.MapItoBsize
- 1;
1444 GLuint amask
= ctx
->Pixel
.MapItoAsize
- 1;
1445 const GLubyte
*rMap
= ctx
->Pixel
.MapItoR8
;
1446 const GLubyte
*gMap
= ctx
->Pixel
.MapItoG8
;
1447 const GLubyte
*bMap
= ctx
->Pixel
.MapItoB8
;
1448 const GLubyte
*aMap
= ctx
->Pixel
.MapItoA8
;
1451 rgba
[i
][RCOMP
] = rMap
[index
[i
] & rmask
];
1452 rgba
[i
][GCOMP
] = gMap
[index
[i
] & gmask
];
1453 rgba
[i
][BCOMP
] = bMap
[index
[i
] & bmask
];
1454 rgba
[i
][ACOMP
] = aMap
[index
[i
] & amask
];
1460 _mesa_scale_and_bias_depth(const GLcontext
*ctx
, GLuint n
,
1461 GLfloat depthValues
[])
1463 const GLfloat scale
= ctx
->Pixel
.DepthScale
;
1464 const GLfloat bias
= ctx
->Pixel
.DepthBias
;
1466 for (i
= 0; i
< n
; i
++) {
1467 GLfloat d
= depthValues
[i
] * scale
+ bias
;
1468 depthValues
[i
] = CLAMP(d
, 0.0F
, 1.0F
);
1474 /**********************************************************************/
1475 /***** State Management *****/
1476 /**********************************************************************/
1479 * Return a bitmask of IMAGE_*_BIT flags which to indicate which
1480 * pixel transfer operations are enabled.
1483 update_image_transfer_state(GLcontext
*ctx
)
1487 if (ctx
->Pixel
.RedScale
!= 1.0F
|| ctx
->Pixel
.RedBias
!= 0.0F
||
1488 ctx
->Pixel
.GreenScale
!= 1.0F
|| ctx
->Pixel
.GreenBias
!= 0.0F
||
1489 ctx
->Pixel
.BlueScale
!= 1.0F
|| ctx
->Pixel
.BlueBias
!= 0.0F
||
1490 ctx
->Pixel
.AlphaScale
!= 1.0F
|| ctx
->Pixel
.AlphaBias
!= 0.0F
)
1491 mask
|= IMAGE_SCALE_BIAS_BIT
;
1493 if (ctx
->Pixel
.IndexShift
|| ctx
->Pixel
.IndexOffset
)
1494 mask
|= IMAGE_SHIFT_OFFSET_BIT
;
1496 if (ctx
->Pixel
.MapColorFlag
)
1497 mask
|= IMAGE_MAP_COLOR_BIT
;
1499 if (ctx
->Pixel
.ColorTableEnabled
)
1500 mask
|= IMAGE_COLOR_TABLE_BIT
;
1502 if (ctx
->Pixel
.Convolution1DEnabled
||
1503 ctx
->Pixel
.Convolution2DEnabled
||
1504 ctx
->Pixel
.Separable2DEnabled
) {
1505 mask
|= IMAGE_CONVOLUTION_BIT
;
1506 if (ctx
->Pixel
.PostConvolutionScale
[0] != 1.0F
||
1507 ctx
->Pixel
.PostConvolutionScale
[1] != 1.0F
||
1508 ctx
->Pixel
.PostConvolutionScale
[2] != 1.0F
||
1509 ctx
->Pixel
.PostConvolutionScale
[3] != 1.0F
||
1510 ctx
->Pixel
.PostConvolutionBias
[0] != 0.0F
||
1511 ctx
->Pixel
.PostConvolutionBias
[1] != 0.0F
||
1512 ctx
->Pixel
.PostConvolutionBias
[2] != 0.0F
||
1513 ctx
->Pixel
.PostConvolutionBias
[3] != 0.0F
) {
1514 mask
|= IMAGE_POST_CONVOLUTION_SCALE_BIAS
;
1518 if (ctx
->Pixel
.PostConvolutionColorTableEnabled
)
1519 mask
|= IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT
;
1521 if (ctx
->ColorMatrixStack
.Top
->type
!= MATRIX_IDENTITY
||
1522 ctx
->Pixel
.PostColorMatrixScale
[0] != 1.0F
||
1523 ctx
->Pixel
.PostColorMatrixBias
[0] != 0.0F
||
1524 ctx
->Pixel
.PostColorMatrixScale
[1] != 1.0F
||
1525 ctx
->Pixel
.PostColorMatrixBias
[1] != 0.0F
||
1526 ctx
->Pixel
.PostColorMatrixScale
[2] != 1.0F
||
1527 ctx
->Pixel
.PostColorMatrixBias
[2] != 0.0F
||
1528 ctx
->Pixel
.PostColorMatrixScale
[3] != 1.0F
||
1529 ctx
->Pixel
.PostColorMatrixBias
[3] != 0.0F
)
1530 mask
|= IMAGE_COLOR_MATRIX_BIT
;
1532 if (ctx
->Pixel
.PostColorMatrixColorTableEnabled
)
1533 mask
|= IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT
;
1535 if (ctx
->Pixel
.HistogramEnabled
)
1536 mask
|= IMAGE_HISTOGRAM_BIT
;
1538 if (ctx
->Pixel
.MinMaxEnabled
)
1539 mask
|= IMAGE_MIN_MAX_BIT
;
1541 ctx
->_ImageTransferState
= mask
;
1545 void _mesa_update_pixel( GLcontext
*ctx
, GLuint new_state
)
1547 if (new_state
& _NEW_COLOR_MATRIX
)
1548 _math_matrix_analyse( ctx
->ColorMatrixStack
.Top
);
1550 /* References ColorMatrix.type (derived above).
1552 if (new_state
& _IMAGE_NEW_TRANSFER_STATE
)
1553 update_image_transfer_state(ctx
);
1557 /**********************************************************************/
1558 /***** Initialization *****/
1559 /**********************************************************************/
1563 * Initialize the context's PIXEL attribute group.
1566 _mesa_init_pixel( GLcontext
*ctx
)
1571 ctx
->Pixel
.RedBias
= 0.0;
1572 ctx
->Pixel
.RedScale
= 1.0;
1573 ctx
->Pixel
.GreenBias
= 0.0;
1574 ctx
->Pixel
.GreenScale
= 1.0;
1575 ctx
->Pixel
.BlueBias
= 0.0;
1576 ctx
->Pixel
.BlueScale
= 1.0;
1577 ctx
->Pixel
.AlphaBias
= 0.0;
1578 ctx
->Pixel
.AlphaScale
= 1.0;
1579 ctx
->Pixel
.DepthBias
= 0.0;
1580 ctx
->Pixel
.DepthScale
= 1.0;
1581 ctx
->Pixel
.IndexOffset
= 0;
1582 ctx
->Pixel
.IndexShift
= 0;
1583 ctx
->Pixel
.ZoomX
= 1.0;
1584 ctx
->Pixel
.ZoomY
= 1.0;
1585 ctx
->Pixel
.MapColorFlag
= GL_FALSE
;
1586 ctx
->Pixel
.MapStencilFlag
= GL_FALSE
;
1587 ctx
->Pixel
.MapStoSsize
= 1;
1588 ctx
->Pixel
.MapItoIsize
= 1;
1589 ctx
->Pixel
.MapItoRsize
= 1;
1590 ctx
->Pixel
.MapItoGsize
= 1;
1591 ctx
->Pixel
.MapItoBsize
= 1;
1592 ctx
->Pixel
.MapItoAsize
= 1;
1593 ctx
->Pixel
.MapRtoRsize
= 1;
1594 ctx
->Pixel
.MapGtoGsize
= 1;
1595 ctx
->Pixel
.MapBtoBsize
= 1;
1596 ctx
->Pixel
.MapAtoAsize
= 1;
1597 ctx
->Pixel
.MapStoS
[0] = 0;
1598 ctx
->Pixel
.MapItoI
[0] = 0.0;
1599 ctx
->Pixel
.MapItoR
[0] = 0.0;
1600 ctx
->Pixel
.MapItoG
[0] = 0.0;
1601 ctx
->Pixel
.MapItoB
[0] = 0.0;
1602 ctx
->Pixel
.MapItoA
[0] = 0.0;
1603 ctx
->Pixel
.MapItoR8
[0] = 0;
1604 ctx
->Pixel
.MapItoG8
[0] = 0;
1605 ctx
->Pixel
.MapItoB8
[0] = 0;
1606 ctx
->Pixel
.MapItoA8
[0] = 0;
1607 ctx
->Pixel
.MapRtoR
[0] = 0.0;
1608 ctx
->Pixel
.MapGtoG
[0] = 0.0;
1609 ctx
->Pixel
.MapBtoB
[0] = 0.0;
1610 ctx
->Pixel
.MapAtoA
[0] = 0.0;
1611 ctx
->Pixel
.HistogramEnabled
= GL_FALSE
;
1612 ctx
->Pixel
.MinMaxEnabled
= GL_FALSE
;
1613 ASSIGN_4V(ctx
->Pixel
.PostColorMatrixScale
, 1.0, 1.0, 1.0, 1.0);
1614 ASSIGN_4V(ctx
->Pixel
.PostColorMatrixBias
, 0.0, 0.0, 0.0, 0.0);
1615 ASSIGN_4V(ctx
->Pixel
.ColorTableScale
, 1.0, 1.0, 1.0, 1.0);
1616 ASSIGN_4V(ctx
->Pixel
.ColorTableBias
, 0.0, 0.0, 0.0, 0.0);
1617 ASSIGN_4V(ctx
->Pixel
.PCCTscale
, 1.0, 1.0, 1.0, 1.0);
1618 ASSIGN_4V(ctx
->Pixel
.PCCTbias
, 0.0, 0.0, 0.0, 0.0);
1619 ASSIGN_4V(ctx
->Pixel
.PCMCTscale
, 1.0, 1.0, 1.0, 1.0);
1620 ASSIGN_4V(ctx
->Pixel
.PCMCTbias
, 0.0, 0.0, 0.0, 0.0);
1621 ctx
->Pixel
.ColorTableEnabled
= GL_FALSE
;
1622 ctx
->Pixel
.PostConvolutionColorTableEnabled
= GL_FALSE
;
1623 ctx
->Pixel
.PostColorMatrixColorTableEnabled
= GL_FALSE
;
1624 ctx
->Pixel
.Convolution1DEnabled
= GL_FALSE
;
1625 ctx
->Pixel
.Convolution2DEnabled
= GL_FALSE
;
1626 ctx
->Pixel
.Separable2DEnabled
= GL_FALSE
;
1627 for (i
= 0; i
< 3; i
++) {
1628 ASSIGN_4V(ctx
->Pixel
.ConvolutionBorderColor
[i
], 0.0, 0.0, 0.0, 0.0);
1629 ctx
->Pixel
.ConvolutionBorderMode
[i
] = GL_REDUCE
;
1630 ASSIGN_4V(ctx
->Pixel
.ConvolutionFilterScale
[i
], 1.0, 1.0, 1.0, 1.0);
1631 ASSIGN_4V(ctx
->Pixel
.ConvolutionFilterBias
[i
], 0.0, 0.0, 0.0, 0.0);
1633 for (i
= 0; i
< MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_WIDTH
* 4; i
++) {
1634 ctx
->Convolution1D
.Filter
[i
] = 0.0;
1635 ctx
->Convolution2D
.Filter
[i
] = 0.0;
1636 ctx
->Separable2D
.Filter
[i
] = 0.0;
1638 ASSIGN_4V(ctx
->Pixel
.PostConvolutionScale
, 1.0, 1.0, 1.0, 1.0);
1639 ASSIGN_4V(ctx
->Pixel
.PostConvolutionBias
, 0.0, 0.0, 0.0, 0.0);
1640 /* GL_SGI_texture_color_table */
1641 ASSIGN_4V(ctx
->Pixel
.TextureColorTableScale
, 1.0, 1.0, 1.0, 1.0);
1642 ASSIGN_4V(ctx
->Pixel
.TextureColorTableBias
, 0.0, 0.0, 0.0, 0.0);
1644 /* Pixel transfer */
1645 ctx
->Pack
.Alignment
= 4;
1646 ctx
->Pack
.RowLength
= 0;
1647 ctx
->Pack
.ImageHeight
= 0;
1648 ctx
->Pack
.SkipPixels
= 0;
1649 ctx
->Pack
.SkipRows
= 0;
1650 ctx
->Pack
.SkipImages
= 0;
1651 ctx
->Pack
.SwapBytes
= GL_FALSE
;
1652 ctx
->Pack
.LsbFirst
= GL_FALSE
;
1653 ctx
->Pack
.ClientStorage
= GL_FALSE
;
1654 ctx
->Pack
.Invert
= GL_FALSE
;
1655 #if FEATURE_EXT_pixel_buffer_object
1656 ctx
->Pack
.BufferObj
= ctx
->Array
.NullBufferObj
;
1658 ctx
->Unpack
.Alignment
= 4;
1659 ctx
->Unpack
.RowLength
= 0;
1660 ctx
->Unpack
.ImageHeight
= 0;
1661 ctx
->Unpack
.SkipPixels
= 0;
1662 ctx
->Unpack
.SkipRows
= 0;
1663 ctx
->Unpack
.SkipImages
= 0;
1664 ctx
->Unpack
.SwapBytes
= GL_FALSE
;
1665 ctx
->Unpack
.LsbFirst
= GL_FALSE
;
1666 ctx
->Unpack
.ClientStorage
= GL_FALSE
;
1667 ctx
->Unpack
.Invert
= GL_FALSE
;
1668 #if FEATURE_EXT_pixel_buffer_object
1669 ctx
->Unpack
.BufferObj
= ctx
->Array
.NullBufferObj
;
1673 * _mesa_unpack_image() returns image data in this format. When we
1674 * execute image commands (glDrawPixels(), glTexImage(), etc) from
1675 * within display lists we have to be sure to set the current
1676 * unpacking parameters to these values!
1678 ctx
->DefaultPacking
.Alignment
= 1;
1679 ctx
->DefaultPacking
.RowLength
= 0;
1680 ctx
->DefaultPacking
.SkipPixels
= 0;
1681 ctx
->DefaultPacking
.SkipRows
= 0;
1682 ctx
->DefaultPacking
.ImageHeight
= 0;
1683 ctx
->DefaultPacking
.SkipImages
= 0;
1684 ctx
->DefaultPacking
.SwapBytes
= GL_FALSE
;
1685 ctx
->DefaultPacking
.LsbFirst
= GL_FALSE
;
1686 ctx
->DefaultPacking
.ClientStorage
= GL_FALSE
;
1687 ctx
->DefaultPacking
.Invert
= GL_FALSE
;
1688 #if FEATURE_EXT_pixel_buffer_object
1689 ctx
->DefaultPacking
.BufferObj
= ctx
->Array
.NullBufferObj
;
1692 if (ctx
->Visual
.doubleBufferMode
) {
1693 ctx
->Pixel
.ReadBuffer
= GL_BACK
;
1696 ctx
->Pixel
.ReadBuffer
= GL_FRONT
;
1700 ctx
->_ImageTransferState
= 0;