2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2006 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.
27 * Image convolution functions.
29 * Notes: filter kernel elements are indexed by <n> and <m> as in
35 #include "bufferobj.h"
46 * Given an internalFormat token passed to glConvolutionFilter
47 * or glSeparableFilter, return the corresponding base format.
48 * Return -1 if invalid token.
51 base_filter_format( GLenum format
)
66 case GL_LUMINANCE_ALPHA
:
67 case GL_LUMINANCE4_ALPHA4
:
68 case GL_LUMINANCE6_ALPHA2
:
69 case GL_LUMINANCE8_ALPHA8
:
70 case GL_LUMINANCE12_ALPHA4
:
71 case GL_LUMINANCE12_ALPHA12
:
72 case GL_LUMINANCE16_ALPHA16
:
73 return GL_LUMINANCE_ALPHA
;
100 return -1; /* error */
106 _mesa_ConvolutionFilter1D(GLenum target
, GLenum internalFormat
, GLsizei width
, GLenum format
, GLenum type
, const GLvoid
*image
)
109 GET_CURRENT_CONTEXT(ctx
);
110 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
112 if (target
!= GL_CONVOLUTION_1D
) {
113 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionFilter1D(target)");
117 baseFormat
= base_filter_format(internalFormat
);
118 if (baseFormat
< 0 || baseFormat
== GL_COLOR_INDEX
) {
119 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionFilter1D(internalFormat)");
123 if (width
< 0 || width
> MAX_CONVOLUTION_WIDTH
) {
124 _mesa_error(ctx
, GL_INVALID_VALUE
, "glConvolutionFilter1D(width)");
128 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
129 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glConvolutionFilter1D(format or type)");
133 if (format
== GL_COLOR_INDEX
||
134 format
== GL_STENCIL_INDEX
||
135 format
== GL_DEPTH_COMPONENT
||
136 format
== GL_INTENSITY
||
138 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionFilter1D(format or type)");
142 ctx
->Convolution1D
.Format
= format
;
143 ctx
->Convolution1D
.InternalFormat
= internalFormat
;
144 ctx
->Convolution1D
.Width
= width
;
145 ctx
->Convolution1D
.Height
= 1;
147 image
= _mesa_map_validate_pbo_source(ctx
,
148 1, &ctx
->Unpack
, width
, 1, 1,
150 "glConvolutionFilter1D");
154 _mesa_unpack_color_span_float(ctx
, width
, GL_RGBA
,
155 ctx
->Convolution1D
.Filter
,
156 format
, type
, image
, &ctx
->Unpack
,
157 0); /* transferOps */
159 _mesa_unmap_pbo_source(ctx
, &ctx
->Unpack
);
161 _mesa_scale_and_bias_rgba(width
,
162 (GLfloat (*)[4]) ctx
->Convolution1D
.Filter
,
163 ctx
->Pixel
.ConvolutionFilterScale
[0][0],
164 ctx
->Pixel
.ConvolutionFilterScale
[0][1],
165 ctx
->Pixel
.ConvolutionFilterScale
[0][2],
166 ctx
->Pixel
.ConvolutionFilterScale
[0][3],
167 ctx
->Pixel
.ConvolutionFilterBias
[0][0],
168 ctx
->Pixel
.ConvolutionFilterBias
[0][1],
169 ctx
->Pixel
.ConvolutionFilterBias
[0][2],
170 ctx
->Pixel
.ConvolutionFilterBias
[0][3]);
172 ctx
->NewState
|= _NEW_PIXEL
;
177 _mesa_ConvolutionFilter2D(GLenum target
, GLenum internalFormat
, GLsizei width
, GLsizei height
, GLenum format
, GLenum type
, const GLvoid
*image
)
181 GET_CURRENT_CONTEXT(ctx
);
182 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
184 if (target
!= GL_CONVOLUTION_2D
) {
185 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionFilter2D(target)");
189 baseFormat
= base_filter_format(internalFormat
);
190 if (baseFormat
< 0 || baseFormat
== GL_COLOR_INDEX
) {
191 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionFilter2D(internalFormat)");
195 if (width
< 0 || width
> MAX_CONVOLUTION_WIDTH
) {
196 _mesa_error(ctx
, GL_INVALID_VALUE
, "glConvolutionFilter2D(width)");
199 if (height
< 0 || height
> MAX_CONVOLUTION_HEIGHT
) {
200 _mesa_error(ctx
, GL_INVALID_VALUE
, "glConvolutionFilter2D(height)");
204 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
205 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glConvolutionFilter2D(format or type)");
208 if (format
== GL_COLOR_INDEX
||
209 format
== GL_STENCIL_INDEX
||
210 format
== GL_DEPTH_COMPONENT
||
211 format
== GL_INTENSITY
||
213 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionFilter2D(format or type)");
217 /* this should have been caught earlier */
218 assert(_mesa_components_in_format(format
));
220 ctx
->Convolution2D
.Format
= format
;
221 ctx
->Convolution2D
.InternalFormat
= internalFormat
;
222 ctx
->Convolution2D
.Width
= width
;
223 ctx
->Convolution2D
.Height
= height
;
225 image
= _mesa_map_validate_pbo_source(ctx
,
226 2, &ctx
->Unpack
, width
, height
, 1,
228 "glConvolutionFilter2D");
232 /* Unpack filter image. We always store filters in RGBA format. */
233 for (i
= 0; i
< height
; i
++) {
234 const GLvoid
*src
= _mesa_image_address2d(&ctx
->Unpack
, image
, width
,
235 height
, format
, type
, i
, 0);
236 GLfloat
*dst
= ctx
->Convolution2D
.Filter
+ i
* width
* 4;
237 _mesa_unpack_color_span_float(ctx
, width
, GL_RGBA
, dst
,
238 format
, type
, src
, &ctx
->Unpack
,
239 0); /* transferOps */
242 _mesa_unmap_pbo_source(ctx
, &ctx
->Unpack
);
244 _mesa_scale_and_bias_rgba(width
* height
,
245 (GLfloat (*)[4]) ctx
->Convolution2D
.Filter
,
246 ctx
->Pixel
.ConvolutionFilterScale
[1][0],
247 ctx
->Pixel
.ConvolutionFilterScale
[1][1],
248 ctx
->Pixel
.ConvolutionFilterScale
[1][2],
249 ctx
->Pixel
.ConvolutionFilterScale
[1][3],
250 ctx
->Pixel
.ConvolutionFilterBias
[1][0],
251 ctx
->Pixel
.ConvolutionFilterBias
[1][1],
252 ctx
->Pixel
.ConvolutionFilterBias
[1][2],
253 ctx
->Pixel
.ConvolutionFilterBias
[1][3]);
255 ctx
->NewState
|= _NEW_PIXEL
;
260 _mesa_ConvolutionParameterf(GLenum target
, GLenum pname
, GLfloat param
)
262 GET_CURRENT_CONTEXT(ctx
);
264 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
267 case GL_CONVOLUTION_1D
:
270 case GL_CONVOLUTION_2D
:
273 case GL_SEPARABLE_2D
:
277 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameterf(target)");
282 case GL_CONVOLUTION_BORDER_MODE
:
283 if (param
== (GLfloat
) GL_REDUCE
||
284 param
== (GLfloat
) GL_CONSTANT_BORDER
||
285 param
== (GLfloat
) GL_REPLICATE_BORDER
) {
286 ctx
->Pixel
.ConvolutionBorderMode
[c
] = (GLenum
) param
;
289 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameterf(params)");
294 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameterf(pname)");
298 ctx
->NewState
|= _NEW_PIXEL
;
303 _mesa_ConvolutionParameterfv(GLenum target
, GLenum pname
, const GLfloat
*params
)
305 GET_CURRENT_CONTEXT(ctx
);
307 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
310 case GL_CONVOLUTION_1D
:
313 case GL_CONVOLUTION_2D
:
316 case GL_SEPARABLE_2D
:
320 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameterfv(target)");
325 case GL_CONVOLUTION_BORDER_COLOR
:
326 COPY_4V(ctx
->Pixel
.ConvolutionBorderColor
[c
], params
);
328 case GL_CONVOLUTION_BORDER_MODE
:
329 if (params
[0] == (GLfloat
) GL_REDUCE
||
330 params
[0] == (GLfloat
) GL_CONSTANT_BORDER
||
331 params
[0] == (GLfloat
) GL_REPLICATE_BORDER
) {
332 ctx
->Pixel
.ConvolutionBorderMode
[c
] = (GLenum
) params
[0];
335 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameterfv(params)");
339 case GL_CONVOLUTION_FILTER_SCALE
:
340 COPY_4V(ctx
->Pixel
.ConvolutionFilterScale
[c
], params
);
342 case GL_CONVOLUTION_FILTER_BIAS
:
343 COPY_4V(ctx
->Pixel
.ConvolutionFilterBias
[c
], params
);
346 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameterfv(pname)");
350 ctx
->NewState
|= _NEW_PIXEL
;
355 _mesa_ConvolutionParameteri(GLenum target
, GLenum pname
, GLint param
)
357 GET_CURRENT_CONTEXT(ctx
);
359 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
362 case GL_CONVOLUTION_1D
:
365 case GL_CONVOLUTION_2D
:
368 case GL_SEPARABLE_2D
:
372 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameteri(target)");
377 case GL_CONVOLUTION_BORDER_MODE
:
378 if (param
== (GLint
) GL_REDUCE
||
379 param
== (GLint
) GL_CONSTANT_BORDER
||
380 param
== (GLint
) GL_REPLICATE_BORDER
) {
381 ctx
->Pixel
.ConvolutionBorderMode
[c
] = (GLenum
) param
;
384 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameteri(params)");
389 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameteri(pname)");
393 ctx
->NewState
|= _NEW_PIXEL
;
398 _mesa_ConvolutionParameteriv(GLenum target
, GLenum pname
, const GLint
*params
)
400 GET_CURRENT_CONTEXT(ctx
);
402 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
405 case GL_CONVOLUTION_1D
:
408 case GL_CONVOLUTION_2D
:
411 case GL_SEPARABLE_2D
:
415 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameteriv(target)");
420 case GL_CONVOLUTION_BORDER_COLOR
:
421 ctx
->Pixel
.ConvolutionBorderColor
[c
][0] = INT_TO_FLOAT(params
[0]);
422 ctx
->Pixel
.ConvolutionBorderColor
[c
][1] = INT_TO_FLOAT(params
[1]);
423 ctx
->Pixel
.ConvolutionBorderColor
[c
][2] = INT_TO_FLOAT(params
[2]);
424 ctx
->Pixel
.ConvolutionBorderColor
[c
][3] = INT_TO_FLOAT(params
[3]);
426 case GL_CONVOLUTION_BORDER_MODE
:
427 if (params
[0] == (GLint
) GL_REDUCE
||
428 params
[0] == (GLint
) GL_CONSTANT_BORDER
||
429 params
[0] == (GLint
) GL_REPLICATE_BORDER
) {
430 ctx
->Pixel
.ConvolutionBorderMode
[c
] = (GLenum
) params
[0];
433 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameteriv(params)");
437 case GL_CONVOLUTION_FILTER_SCALE
:
438 /* COPY_4V(ctx->Pixel.ConvolutionFilterScale[c], params); */
439 /* need cast to prevent compiler warnings */
440 ctx
->Pixel
.ConvolutionFilterScale
[c
][0] = (GLfloat
) params
[0];
441 ctx
->Pixel
.ConvolutionFilterScale
[c
][1] = (GLfloat
) params
[1];
442 ctx
->Pixel
.ConvolutionFilterScale
[c
][2] = (GLfloat
) params
[2];
443 ctx
->Pixel
.ConvolutionFilterScale
[c
][3] = (GLfloat
) params
[3];
445 case GL_CONVOLUTION_FILTER_BIAS
:
446 /* COPY_4V(ctx->Pixel.ConvolutionFilterBias[c], params); */
447 /* need cast to prevent compiler warnings */
448 ctx
->Pixel
.ConvolutionFilterBias
[c
][0] = (GLfloat
) params
[0];
449 ctx
->Pixel
.ConvolutionFilterBias
[c
][1] = (GLfloat
) params
[1];
450 ctx
->Pixel
.ConvolutionFilterBias
[c
][2] = (GLfloat
) params
[2];
451 ctx
->Pixel
.ConvolutionFilterBias
[c
][3] = (GLfloat
) params
[3];
454 _mesa_error(ctx
, GL_INVALID_ENUM
, "glConvolutionParameteriv(pname)");
458 ctx
->NewState
|= _NEW_PIXEL
;
463 _mesa_CopyConvolutionFilter1D(GLenum target
, GLenum internalFormat
, GLint x
, GLint y
, GLsizei width
)
466 GET_CURRENT_CONTEXT(ctx
);
467 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
469 if (target
!= GL_CONVOLUTION_1D
) {
470 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyConvolutionFilter1D(target)");
474 baseFormat
= base_filter_format(internalFormat
);
475 if (baseFormat
< 0 || baseFormat
== GL_COLOR_INDEX
) {
476 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyConvolutionFilter1D(internalFormat)");
480 if (width
< 0 || width
> MAX_CONVOLUTION_WIDTH
) {
481 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCopyConvolutionFilter1D(width)");
485 ctx
->Driver
.CopyConvolutionFilter1D( ctx
, target
,
486 internalFormat
, x
, y
, width
);
491 _mesa_CopyConvolutionFilter2D(GLenum target
, GLenum internalFormat
, GLint x
, GLint y
, GLsizei width
, GLsizei height
)
494 GET_CURRENT_CONTEXT(ctx
);
495 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
497 if (target
!= GL_CONVOLUTION_2D
) {
498 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyConvolutionFilter2D(target)");
502 baseFormat
= base_filter_format(internalFormat
);
503 if (baseFormat
< 0 || baseFormat
== GL_COLOR_INDEX
) {
504 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCopyConvolutionFilter2D(internalFormat)");
508 if (width
< 0 || width
> MAX_CONVOLUTION_WIDTH
) {
509 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCopyConvolutionFilter2D(width)");
512 if (height
< 0 || height
> MAX_CONVOLUTION_HEIGHT
) {
513 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCopyConvolutionFilter2D(height)");
517 ctx
->Driver
.CopyConvolutionFilter2D( ctx
, target
, internalFormat
, x
, y
,
523 _mesa_GetConvolutionFilter(GLenum target
, GLenum format
, GLenum type
,
526 struct gl_convolution_attrib
*filter
;
528 GET_CURRENT_CONTEXT(ctx
);
529 ASSERT_OUTSIDE_BEGIN_END(ctx
);
532 _mesa_update_state(ctx
);
535 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
536 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetConvolutionFilter(format or type)");
540 if (format
== GL_COLOR_INDEX
||
541 format
== GL_STENCIL_INDEX
||
542 format
== GL_DEPTH_COMPONENT
||
543 format
== GL_INTENSITY
||
545 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionFilter(format or type)");
550 case GL_CONVOLUTION_1D
:
551 filter
= &(ctx
->Convolution1D
);
553 case GL_CONVOLUTION_2D
:
554 filter
= &(ctx
->Convolution2D
);
557 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionFilter(target)");
561 image
= _mesa_map_validate_pbo_dest(ctx
, 2, &ctx
->Pack
,
562 filter
->Width
, filter
->Height
, 1,
564 "glGetConvolutionFilter");
568 for (row
= 0; row
< filter
->Height
; row
++) {
569 GLvoid
*dst
= _mesa_image_address2d(&ctx
->Pack
, image
, filter
->Width
,
570 filter
->Height
, format
, type
,
572 GLfloat (*src
)[4] = (GLfloat (*)[4]) (filter
->Filter
+ row
* filter
->Width
* 4);
573 _mesa_pack_rgba_span_float(ctx
, filter
->Width
, src
,
574 format
, type
, dst
, &ctx
->Pack
, 0x0);
577 _mesa_unmap_pbo_dest(ctx
, &ctx
->Pack
);
582 _mesa_GetConvolutionParameterfv(GLenum target
, GLenum pname
, GLfloat
*params
)
584 GET_CURRENT_CONTEXT(ctx
);
585 const struct gl_convolution_attrib
*conv
;
587 ASSERT_OUTSIDE_BEGIN_END(ctx
);
590 case GL_CONVOLUTION_1D
:
592 conv
= &ctx
->Convolution1D
;
594 case GL_CONVOLUTION_2D
:
596 conv
= &ctx
->Convolution2D
;
598 case GL_SEPARABLE_2D
:
600 conv
= &ctx
->Separable2D
;
603 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionParameterfv(target)");
608 case GL_CONVOLUTION_BORDER_COLOR
:
609 COPY_4V(params
, ctx
->Pixel
.ConvolutionBorderColor
[c
]);
611 case GL_CONVOLUTION_BORDER_MODE
:
612 *params
= (GLfloat
) ctx
->Pixel
.ConvolutionBorderMode
[c
];
614 case GL_CONVOLUTION_FILTER_SCALE
:
615 COPY_4V(params
, ctx
->Pixel
.ConvolutionFilterScale
[c
]);
617 case GL_CONVOLUTION_FILTER_BIAS
:
618 COPY_4V(params
, ctx
->Pixel
.ConvolutionFilterBias
[c
]);
620 case GL_CONVOLUTION_FORMAT
:
621 *params
= (GLfloat
) conv
->Format
;
623 case GL_CONVOLUTION_WIDTH
:
624 *params
= (GLfloat
) conv
->Width
;
626 case GL_CONVOLUTION_HEIGHT
:
627 *params
= (GLfloat
) conv
->Height
;
629 case GL_MAX_CONVOLUTION_WIDTH
:
630 *params
= (GLfloat
) ctx
->Const
.MaxConvolutionWidth
;
632 case GL_MAX_CONVOLUTION_HEIGHT
:
633 *params
= (GLfloat
) ctx
->Const
.MaxConvolutionHeight
;
636 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionParameterfv(pname)");
643 _mesa_GetConvolutionParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
645 GET_CURRENT_CONTEXT(ctx
);
646 const struct gl_convolution_attrib
*conv
;
648 ASSERT_OUTSIDE_BEGIN_END(ctx
);
651 case GL_CONVOLUTION_1D
:
653 conv
= &ctx
->Convolution1D
;
655 case GL_CONVOLUTION_2D
:
657 conv
= &ctx
->Convolution2D
;
659 case GL_SEPARABLE_2D
:
661 conv
= &ctx
->Separable2D
;
664 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionParameteriv(target)");
669 case GL_CONVOLUTION_BORDER_COLOR
:
670 params
[0] = FLOAT_TO_INT(ctx
->Pixel
.ConvolutionBorderColor
[c
][0]);
671 params
[1] = FLOAT_TO_INT(ctx
->Pixel
.ConvolutionBorderColor
[c
][1]);
672 params
[2] = FLOAT_TO_INT(ctx
->Pixel
.ConvolutionBorderColor
[c
][2]);
673 params
[3] = FLOAT_TO_INT(ctx
->Pixel
.ConvolutionBorderColor
[c
][3]);
675 case GL_CONVOLUTION_BORDER_MODE
:
676 *params
= (GLint
) ctx
->Pixel
.ConvolutionBorderMode
[c
];
678 case GL_CONVOLUTION_FILTER_SCALE
:
679 params
[0] = (GLint
) ctx
->Pixel
.ConvolutionFilterScale
[c
][0];
680 params
[1] = (GLint
) ctx
->Pixel
.ConvolutionFilterScale
[c
][1];
681 params
[2] = (GLint
) ctx
->Pixel
.ConvolutionFilterScale
[c
][2];
682 params
[3] = (GLint
) ctx
->Pixel
.ConvolutionFilterScale
[c
][3];
684 case GL_CONVOLUTION_FILTER_BIAS
:
685 params
[0] = (GLint
) ctx
->Pixel
.ConvolutionFilterBias
[c
][0];
686 params
[1] = (GLint
) ctx
->Pixel
.ConvolutionFilterBias
[c
][1];
687 params
[2] = (GLint
) ctx
->Pixel
.ConvolutionFilterBias
[c
][2];
688 params
[3] = (GLint
) ctx
->Pixel
.ConvolutionFilterBias
[c
][3];
690 case GL_CONVOLUTION_FORMAT
:
691 *params
= (GLint
) conv
->Format
;
693 case GL_CONVOLUTION_WIDTH
:
694 *params
= (GLint
) conv
->Width
;
696 case GL_CONVOLUTION_HEIGHT
:
697 *params
= (GLint
) conv
->Height
;
699 case GL_MAX_CONVOLUTION_WIDTH
:
700 *params
= (GLint
) ctx
->Const
.MaxConvolutionWidth
;
702 case GL_MAX_CONVOLUTION_HEIGHT
:
703 *params
= (GLint
) ctx
->Const
.MaxConvolutionHeight
;
706 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionParameteriv(pname)");
713 _mesa_GetSeparableFilter(GLenum target
, GLenum format
, GLenum type
,
714 GLvoid
*row
, GLvoid
*column
, GLvoid
*span
)
716 const GLint colStart
= MAX_CONVOLUTION_WIDTH
* 4;
717 struct gl_convolution_attrib
*filter
;
718 GET_CURRENT_CONTEXT(ctx
);
719 ASSERT_OUTSIDE_BEGIN_END(ctx
);
722 _mesa_update_state(ctx
);
725 if (target
!= GL_SEPARABLE_2D
) {
726 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetSeparableFilter(target)");
730 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
731 _mesa_error(ctx
, GL_INVALID_OPERATION
,
732 "glGetConvolutionFilter(format or type)");
736 if (format
== GL_COLOR_INDEX
||
737 format
== GL_STENCIL_INDEX
||
738 format
== GL_DEPTH_COMPONENT
||
739 format
== GL_INTENSITY
||
741 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetConvolutionFilter(format or type)");
745 filter
= &ctx
->Separable2D
;
748 row
= _mesa_map_validate_pbo_dest(ctx
, 1, &ctx
->Pack
,
751 "glGetConvolutionFilter");
753 GLvoid
*dst
= _mesa_image_address1d(&ctx
->Pack
, row
, filter
->Width
,
755 _mesa_pack_rgba_span_float(ctx
, filter
->Width
,
756 (GLfloat (*)[4]) filter
->Filter
,
757 format
, type
, dst
, &ctx
->Pack
, 0x0);
758 _mesa_unmap_pbo_dest(ctx
, &ctx
->Pack
);
761 /* get column filter */
762 column
= _mesa_map_validate_pbo_dest(ctx
, 1, &ctx
->Pack
,
763 filter
->Height
, 1, 1,
764 format
, type
, column
,
765 "glGetConvolutionFilter");
767 GLvoid
*dst
= _mesa_image_address1d(&ctx
->Pack
, column
, filter
->Height
,
769 GLfloat (*src
)[4] = (GLfloat (*)[4]) (filter
->Filter
+ colStart
);
770 _mesa_pack_rgba_span_float(ctx
, filter
->Height
, src
,
771 format
, type
, dst
, &ctx
->Pack
, 0x0);
772 _mesa_unmap_pbo_dest(ctx
, &ctx
->Pack
);
775 (void) span
; /* unused at this time */
780 _mesa_SeparableFilter2D(GLenum target
, GLenum internalFormat
, GLsizei width
, GLsizei height
, GLenum format
, GLenum type
, const GLvoid
*row
, const GLvoid
*column
)
782 const GLint colStart
= MAX_CONVOLUTION_WIDTH
* 4;
784 GET_CURRENT_CONTEXT(ctx
);
785 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
787 if (target
!= GL_SEPARABLE_2D
) {
788 _mesa_error(ctx
, GL_INVALID_ENUM
, "glSeparableFilter2D(target)");
792 baseFormat
= base_filter_format(internalFormat
);
793 if (baseFormat
< 0 || baseFormat
== GL_COLOR_INDEX
) {
794 _mesa_error(ctx
, GL_INVALID_ENUM
, "glSeparableFilter2D(internalFormat)");
798 if (width
< 0 || width
> MAX_CONVOLUTION_WIDTH
) {
799 _mesa_error(ctx
, GL_INVALID_VALUE
, "glSeparableFilter2D(width)");
802 if (height
< 0 || height
> MAX_CONVOLUTION_HEIGHT
) {
803 _mesa_error(ctx
, GL_INVALID_VALUE
, "glSeparableFilter2D(height)");
807 if (!_mesa_is_legal_format_and_type(ctx
, format
, type
)) {
808 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glSeparableFilter2D(format or type)");
812 if (format
== GL_COLOR_INDEX
||
813 format
== GL_STENCIL_INDEX
||
814 format
== GL_DEPTH_COMPONENT
||
815 format
== GL_INTENSITY
||
817 _mesa_error(ctx
, GL_INVALID_ENUM
, "glSeparableFilter2D(format or type)");
821 ctx
->Separable2D
.Format
= format
;
822 ctx
->Separable2D
.InternalFormat
= internalFormat
;
823 ctx
->Separable2D
.Width
= width
;
824 ctx
->Separable2D
.Height
= height
;
826 /* unpack row filter */
827 row
= _mesa_map_validate_pbo_source(ctx
, 1, &ctx
->Unpack
,
830 "glSeparableFilter2D");
832 _mesa_unpack_color_span_float(ctx
, width
, GL_RGBA
,
833 ctx
->Separable2D
.Filter
,
834 format
, type
, row
, &ctx
->Unpack
,
835 0x0); /* transferOps */
836 _mesa_scale_and_bias_rgba(width
,
837 (GLfloat (*)[4]) ctx
->Separable2D
.Filter
,
838 ctx
->Pixel
.ConvolutionFilterScale
[2][0],
839 ctx
->Pixel
.ConvolutionFilterScale
[2][1],
840 ctx
->Pixel
.ConvolutionFilterScale
[2][2],
841 ctx
->Pixel
.ConvolutionFilterScale
[2][3],
842 ctx
->Pixel
.ConvolutionFilterBias
[2][0],
843 ctx
->Pixel
.ConvolutionFilterBias
[2][1],
844 ctx
->Pixel
.ConvolutionFilterBias
[2][2],
845 ctx
->Pixel
.ConvolutionFilterBias
[2][3]);
846 _mesa_unmap_pbo_source(ctx
, &ctx
->Unpack
);
849 /* unpack column filter */
850 column
= _mesa_map_validate_pbo_source(ctx
, 1, &ctx
->Unpack
,
852 format
, type
, column
,
853 "glSeparableFilter2D");
855 _mesa_unpack_color_span_float(ctx
, height
, GL_RGBA
,
856 &ctx
->Separable2D
.Filter
[colStart
],
857 format
, type
, column
, &ctx
->Unpack
,
858 0); /* transferOps */
860 _mesa_scale_and_bias_rgba(height
,
861 (GLfloat (*)[4]) (ctx
->Separable2D
.Filter
+ colStart
),
862 ctx
->Pixel
.ConvolutionFilterScale
[2][0],
863 ctx
->Pixel
.ConvolutionFilterScale
[2][1],
864 ctx
->Pixel
.ConvolutionFilterScale
[2][2],
865 ctx
->Pixel
.ConvolutionFilterScale
[2][3],
866 ctx
->Pixel
.ConvolutionFilterBias
[2][0],
867 ctx
->Pixel
.ConvolutionFilterBias
[2][1],
868 ctx
->Pixel
.ConvolutionFilterBias
[2][2],
869 ctx
->Pixel
.ConvolutionFilterBias
[2][3]);
870 _mesa_unmap_pbo_source(ctx
, &ctx
->Unpack
);
873 if (_mesa_is_bufferobj(ctx
->Unpack
.BufferObj
)) {
874 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
875 ctx
->Unpack
.BufferObj
);
878 ctx
->NewState
|= _NEW_PIXEL
;
882 /**********************************************************************/
883 /*** image convolution functions ***/
884 /**********************************************************************/
887 convolve_1d_reduce(GLint srcWidth
, const GLfloat src
[][4],
888 GLint filterWidth
, const GLfloat filter
[][4],
894 if (filterWidth
>= 1)
895 dstWidth
= srcWidth
- (filterWidth
- 1);
900 return; /* null result */
902 for (i
= 0; i
< dstWidth
; i
++) {
907 for (n
= 0; n
< filterWidth
; n
++) {
908 sumR
+= src
[i
+ n
][RCOMP
] * filter
[n
][RCOMP
];
909 sumG
+= src
[i
+ n
][GCOMP
] * filter
[n
][GCOMP
];
910 sumB
+= src
[i
+ n
][BCOMP
] * filter
[n
][BCOMP
];
911 sumA
+= src
[i
+ n
][ACOMP
] * filter
[n
][ACOMP
];
913 dest
[i
][RCOMP
] = sumR
;
914 dest
[i
][GCOMP
] = sumG
;
915 dest
[i
][BCOMP
] = sumB
;
916 dest
[i
][ACOMP
] = sumA
;
922 convolve_1d_constant(GLint srcWidth
, const GLfloat src
[][4],
923 GLint filterWidth
, const GLfloat filter
[][4],
925 const GLfloat borderColor
[4])
927 const GLint halfFilterWidth
= filterWidth
/ 2;
930 for (i
= 0; i
< srcWidth
; i
++) {
935 for (n
= 0; n
< filterWidth
; n
++) {
936 if (i
+ n
< halfFilterWidth
|| i
+ n
- halfFilterWidth
>= srcWidth
) {
937 sumR
+= borderColor
[RCOMP
] * filter
[n
][RCOMP
];
938 sumG
+= borderColor
[GCOMP
] * filter
[n
][GCOMP
];
939 sumB
+= borderColor
[BCOMP
] * filter
[n
][BCOMP
];
940 sumA
+= borderColor
[ACOMP
] * filter
[n
][ACOMP
];
943 sumR
+= src
[i
+ n
- halfFilterWidth
][RCOMP
] * filter
[n
][RCOMP
];
944 sumG
+= src
[i
+ n
- halfFilterWidth
][GCOMP
] * filter
[n
][GCOMP
];
945 sumB
+= src
[i
+ n
- halfFilterWidth
][BCOMP
] * filter
[n
][BCOMP
];
946 sumA
+= src
[i
+ n
- halfFilterWidth
][ACOMP
] * filter
[n
][ACOMP
];
949 dest
[i
][RCOMP
] = sumR
;
950 dest
[i
][GCOMP
] = sumG
;
951 dest
[i
][BCOMP
] = sumB
;
952 dest
[i
][ACOMP
] = sumA
;
958 convolve_1d_replicate(GLint srcWidth
, const GLfloat src
[][4],
959 GLint filterWidth
, const GLfloat filter
[][4],
962 const GLint halfFilterWidth
= filterWidth
/ 2;
965 for (i
= 0; i
< srcWidth
; i
++) {
970 for (n
= 0; n
< filterWidth
; n
++) {
971 if (i
+ n
< halfFilterWidth
) {
972 sumR
+= src
[0][RCOMP
] * filter
[n
][RCOMP
];
973 sumG
+= src
[0][GCOMP
] * filter
[n
][GCOMP
];
974 sumB
+= src
[0][BCOMP
] * filter
[n
][BCOMP
];
975 sumA
+= src
[0][ACOMP
] * filter
[n
][ACOMP
];
977 else if (i
+ n
- halfFilterWidth
>= srcWidth
) {
978 sumR
+= src
[srcWidth
- 1][RCOMP
] * filter
[n
][RCOMP
];
979 sumG
+= src
[srcWidth
- 1][GCOMP
] * filter
[n
][GCOMP
];
980 sumB
+= src
[srcWidth
- 1][BCOMP
] * filter
[n
][BCOMP
];
981 sumA
+= src
[srcWidth
- 1][ACOMP
] * filter
[n
][ACOMP
];
984 sumR
+= src
[i
+ n
- halfFilterWidth
][RCOMP
] * filter
[n
][RCOMP
];
985 sumG
+= src
[i
+ n
- halfFilterWidth
][GCOMP
] * filter
[n
][GCOMP
];
986 sumB
+= src
[i
+ n
- halfFilterWidth
][BCOMP
] * filter
[n
][BCOMP
];
987 sumA
+= src
[i
+ n
- halfFilterWidth
][ACOMP
] * filter
[n
][ACOMP
];
990 dest
[i
][RCOMP
] = sumR
;
991 dest
[i
][GCOMP
] = sumG
;
992 dest
[i
][BCOMP
] = sumB
;
993 dest
[i
][ACOMP
] = sumA
;
999 convolve_2d_reduce(GLint srcWidth
, GLint srcHeight
,
1000 const GLfloat src
[][4],
1001 GLint filterWidth
, GLint filterHeight
,
1002 const GLfloat filter
[][4],
1005 GLint dstWidth
, dstHeight
;
1008 if (filterWidth
>= 1)
1009 dstWidth
= srcWidth
- (filterWidth
- 1);
1011 dstWidth
= srcWidth
;
1013 if (filterHeight
>= 1)
1014 dstHeight
= srcHeight
- (filterHeight
- 1);
1016 dstHeight
= srcHeight
;
1018 if (dstWidth
<= 0 || dstHeight
<= 0)
1021 for (j
= 0; j
< dstHeight
; j
++) {
1022 for (i
= 0; i
< dstWidth
; i
++) {
1027 for (m
= 0; m
< filterHeight
; m
++) {
1028 for (n
= 0; n
< filterWidth
; n
++) {
1029 const GLint k
= (j
+ m
) * srcWidth
+ i
+ n
;
1030 const GLint f
= m
* filterWidth
+ n
;
1031 sumR
+= src
[k
][RCOMP
] * filter
[f
][RCOMP
];
1032 sumG
+= src
[k
][GCOMP
] * filter
[f
][GCOMP
];
1033 sumB
+= src
[k
][BCOMP
] * filter
[f
][BCOMP
];
1034 sumA
+= src
[k
][ACOMP
] * filter
[f
][ACOMP
];
1037 dest
[j
* dstWidth
+ i
][RCOMP
] = sumR
;
1038 dest
[j
* dstWidth
+ i
][GCOMP
] = sumG
;
1039 dest
[j
* dstWidth
+ i
][BCOMP
] = sumB
;
1040 dest
[j
* dstWidth
+ i
][ACOMP
] = sumA
;
1047 convolve_2d_constant(GLint srcWidth
, GLint srcHeight
,
1048 const GLfloat src
[][4],
1049 GLint filterWidth
, GLint filterHeight
,
1050 const GLfloat filter
[][4],
1052 const GLfloat borderColor
[4])
1054 const GLint halfFilterWidth
= filterWidth
/ 2;
1055 const GLint halfFilterHeight
= filterHeight
/ 2;
1058 for (j
= 0; j
< srcHeight
; j
++) {
1059 for (i
= 0; i
< srcWidth
; i
++) {
1064 for (m
= 0; m
< filterHeight
; m
++) {
1065 for (n
= 0; n
< filterWidth
; n
++) {
1066 const GLint f
= m
* filterWidth
+ n
;
1067 const GLint is
= i
+ n
- halfFilterWidth
;
1068 const GLint js
= j
+ m
- halfFilterHeight
;
1069 if (is
< 0 || is
>= srcWidth
||
1070 js
< 0 || js
>= srcHeight
) {
1071 sumR
+= borderColor
[RCOMP
] * filter
[f
][RCOMP
];
1072 sumG
+= borderColor
[GCOMP
] * filter
[f
][GCOMP
];
1073 sumB
+= borderColor
[BCOMP
] * filter
[f
][BCOMP
];
1074 sumA
+= borderColor
[ACOMP
] * filter
[f
][ACOMP
];
1077 const GLint k
= js
* srcWidth
+ is
;
1078 sumR
+= src
[k
][RCOMP
] * filter
[f
][RCOMP
];
1079 sumG
+= src
[k
][GCOMP
] * filter
[f
][GCOMP
];
1080 sumB
+= src
[k
][BCOMP
] * filter
[f
][BCOMP
];
1081 sumA
+= src
[k
][ACOMP
] * filter
[f
][ACOMP
];
1085 dest
[j
* srcWidth
+ i
][RCOMP
] = sumR
;
1086 dest
[j
* srcWidth
+ i
][GCOMP
] = sumG
;
1087 dest
[j
* srcWidth
+ i
][BCOMP
] = sumB
;
1088 dest
[j
* srcWidth
+ i
][ACOMP
] = sumA
;
1095 convolve_2d_replicate(GLint srcWidth
, GLint srcHeight
,
1096 const GLfloat src
[][4],
1097 GLint filterWidth
, GLint filterHeight
,
1098 const GLfloat filter
[][4],
1101 const GLint halfFilterWidth
= filterWidth
/ 2;
1102 const GLint halfFilterHeight
= filterHeight
/ 2;
1105 for (j
= 0; j
< srcHeight
; j
++) {
1106 for (i
= 0; i
< srcWidth
; i
++) {
1111 for (m
= 0; m
< filterHeight
; m
++) {
1112 for (n
= 0; n
< filterWidth
; n
++) {
1113 const GLint f
= m
* filterWidth
+ n
;
1114 GLint is
= i
+ n
- halfFilterWidth
;
1115 GLint js
= j
+ m
- halfFilterHeight
;
1119 else if (is
>= srcWidth
)
1123 else if (js
>= srcHeight
)
1125 k
= js
* srcWidth
+ is
;
1126 sumR
+= src
[k
][RCOMP
] * filter
[f
][RCOMP
];
1127 sumG
+= src
[k
][GCOMP
] * filter
[f
][GCOMP
];
1128 sumB
+= src
[k
][BCOMP
] * filter
[f
][BCOMP
];
1129 sumA
+= src
[k
][ACOMP
] * filter
[f
][ACOMP
];
1132 dest
[j
* srcWidth
+ i
][RCOMP
] = sumR
;
1133 dest
[j
* srcWidth
+ i
][GCOMP
] = sumG
;
1134 dest
[j
* srcWidth
+ i
][BCOMP
] = sumB
;
1135 dest
[j
* srcWidth
+ i
][ACOMP
] = sumA
;
1142 convolve_sep_reduce(GLint srcWidth
, GLint srcHeight
,
1143 const GLfloat src
[][4],
1144 GLint filterWidth
, GLint filterHeight
,
1145 const GLfloat rowFilt
[][4],
1146 const GLfloat colFilt
[][4],
1149 GLint dstWidth
, dstHeight
;
1152 if (filterWidth
>= 1)
1153 dstWidth
= srcWidth
- (filterWidth
- 1);
1155 dstWidth
= srcWidth
;
1157 if (filterHeight
>= 1)
1158 dstHeight
= srcHeight
- (filterHeight
- 1);
1160 dstHeight
= srcHeight
;
1162 if (dstWidth
<= 0 || dstHeight
<= 0)
1165 for (j
= 0; j
< dstHeight
; j
++) {
1166 for (i
= 0; i
< dstWidth
; i
++) {
1171 for (m
= 0; m
< filterHeight
; m
++) {
1172 for (n
= 0; n
< filterWidth
; n
++) {
1173 GLint k
= (j
+ m
) * srcWidth
+ i
+ n
;
1174 sumR
+= src
[k
][RCOMP
] * rowFilt
[n
][RCOMP
] * colFilt
[m
][RCOMP
];
1175 sumG
+= src
[k
][GCOMP
] * rowFilt
[n
][GCOMP
] * colFilt
[m
][GCOMP
];
1176 sumB
+= src
[k
][BCOMP
] * rowFilt
[n
][BCOMP
] * colFilt
[m
][BCOMP
];
1177 sumA
+= src
[k
][ACOMP
] * rowFilt
[n
][ACOMP
] * colFilt
[m
][ACOMP
];
1180 dest
[j
* dstWidth
+ i
][RCOMP
] = sumR
;
1181 dest
[j
* dstWidth
+ i
][GCOMP
] = sumG
;
1182 dest
[j
* dstWidth
+ i
][BCOMP
] = sumB
;
1183 dest
[j
* dstWidth
+ i
][ACOMP
] = sumA
;
1190 convolve_sep_constant(GLint srcWidth
, GLint srcHeight
,
1191 const GLfloat src
[][4],
1192 GLint filterWidth
, GLint filterHeight
,
1193 const GLfloat rowFilt
[][4],
1194 const GLfloat colFilt
[][4],
1196 const GLfloat borderColor
[4])
1198 const GLint halfFilterWidth
= filterWidth
/ 2;
1199 const GLint halfFilterHeight
= filterHeight
/ 2;
1202 for (j
= 0; j
< srcHeight
; j
++) {
1203 for (i
= 0; i
< srcWidth
; i
++) {
1208 for (m
= 0; m
< filterHeight
; m
++) {
1209 for (n
= 0; n
< filterWidth
; n
++) {
1210 const GLint is
= i
+ n
- halfFilterWidth
;
1211 const GLint js
= j
+ m
- halfFilterHeight
;
1212 if (is
< 0 || is
>= srcWidth
||
1213 js
< 0 || js
>= srcHeight
) {
1214 sumR
+= borderColor
[RCOMP
] * rowFilt
[n
][RCOMP
] * colFilt
[m
][RCOMP
];
1215 sumG
+= borderColor
[GCOMP
] * rowFilt
[n
][GCOMP
] * colFilt
[m
][GCOMP
];
1216 sumB
+= borderColor
[BCOMP
] * rowFilt
[n
][BCOMP
] * colFilt
[m
][BCOMP
];
1217 sumA
+= borderColor
[ACOMP
] * rowFilt
[n
][ACOMP
] * colFilt
[m
][ACOMP
];
1220 GLint k
= js
* srcWidth
+ is
;
1221 sumR
+= src
[k
][RCOMP
] * rowFilt
[n
][RCOMP
] * colFilt
[m
][RCOMP
];
1222 sumG
+= src
[k
][GCOMP
] * rowFilt
[n
][GCOMP
] * colFilt
[m
][GCOMP
];
1223 sumB
+= src
[k
][BCOMP
] * rowFilt
[n
][BCOMP
] * colFilt
[m
][BCOMP
];
1224 sumA
+= src
[k
][ACOMP
] * rowFilt
[n
][ACOMP
] * colFilt
[m
][ACOMP
];
1229 dest
[j
* srcWidth
+ i
][RCOMP
] = sumR
;
1230 dest
[j
* srcWidth
+ i
][GCOMP
] = sumG
;
1231 dest
[j
* srcWidth
+ i
][BCOMP
] = sumB
;
1232 dest
[j
* srcWidth
+ i
][ACOMP
] = sumA
;
1239 convolve_sep_replicate(GLint srcWidth
, GLint srcHeight
,
1240 const GLfloat src
[][4],
1241 GLint filterWidth
, GLint filterHeight
,
1242 const GLfloat rowFilt
[][4],
1243 const GLfloat colFilt
[][4],
1246 const GLint halfFilterWidth
= filterWidth
/ 2;
1247 const GLint halfFilterHeight
= filterHeight
/ 2;
1250 for (j
= 0; j
< srcHeight
; j
++) {
1251 for (i
= 0; i
< srcWidth
; i
++) {
1256 for (m
= 0; m
< filterHeight
; m
++) {
1257 for (n
= 0; n
< filterWidth
; n
++) {
1258 GLint is
= i
+ n
- halfFilterWidth
;
1259 GLint js
= j
+ m
- halfFilterHeight
;
1263 else if (is
>= srcWidth
)
1267 else if (js
>= srcHeight
)
1269 k
= js
* srcWidth
+ is
;
1270 sumR
+= src
[k
][RCOMP
] * rowFilt
[n
][RCOMP
] * colFilt
[m
][RCOMP
];
1271 sumG
+= src
[k
][GCOMP
] * rowFilt
[n
][GCOMP
] * colFilt
[m
][GCOMP
];
1272 sumB
+= src
[k
][BCOMP
] * rowFilt
[n
][BCOMP
] * colFilt
[m
][BCOMP
];
1273 sumA
+= src
[k
][ACOMP
] * rowFilt
[n
][ACOMP
] * colFilt
[m
][ACOMP
];
1276 dest
[j
* srcWidth
+ i
][RCOMP
] = sumR
;
1277 dest
[j
* srcWidth
+ i
][GCOMP
] = sumG
;
1278 dest
[j
* srcWidth
+ i
][BCOMP
] = sumB
;
1279 dest
[j
* srcWidth
+ i
][ACOMP
] = sumA
;
1287 _mesa_convolve_1d_image(const GLcontext
*ctx
, GLsizei
*width
,
1288 const GLfloat
*srcImage
, GLfloat
*dstImage
)
1290 switch (ctx
->Pixel
.ConvolutionBorderMode
[0]) {
1292 convolve_1d_reduce(*width
, (const GLfloat (*)[4]) srcImage
,
1293 ctx
->Convolution1D
.Width
,
1294 (const GLfloat (*)[4]) ctx
->Convolution1D
.Filter
,
1295 (GLfloat (*)[4]) dstImage
);
1296 *width
= *width
- (MAX2(ctx
->Convolution1D
.Width
, 1) - 1);
1298 case GL_CONSTANT_BORDER
:
1299 convolve_1d_constant(*width
, (const GLfloat (*)[4]) srcImage
,
1300 ctx
->Convolution1D
.Width
,
1301 (const GLfloat (*)[4]) ctx
->Convolution1D
.Filter
,
1302 (GLfloat (*)[4]) dstImage
,
1303 ctx
->Pixel
.ConvolutionBorderColor
[0]);
1305 case GL_REPLICATE_BORDER
:
1306 convolve_1d_replicate(*width
, (const GLfloat (*)[4]) srcImage
,
1307 ctx
->Convolution1D
.Width
,
1308 (const GLfloat (*)[4]) ctx
->Convolution1D
.Filter
,
1309 (GLfloat (*)[4]) dstImage
);
1318 _mesa_convolve_2d_image(const GLcontext
*ctx
, GLsizei
*width
, GLsizei
*height
,
1319 const GLfloat
*srcImage
, GLfloat
*dstImage
)
1321 switch (ctx
->Pixel
.ConvolutionBorderMode
[1]) {
1323 convolve_2d_reduce(*width
, *height
,
1324 (const GLfloat (*)[4]) srcImage
,
1325 ctx
->Convolution2D
.Width
,
1326 ctx
->Convolution2D
.Height
,
1327 (const GLfloat (*)[4]) ctx
->Convolution2D
.Filter
,
1328 (GLfloat (*)[4]) dstImage
);
1329 *width
= *width
- (MAX2(ctx
->Convolution2D
.Width
, 1) - 1);
1330 *height
= *height
- (MAX2(ctx
->Convolution2D
.Height
, 1) - 1);
1332 case GL_CONSTANT_BORDER
:
1333 convolve_2d_constant(*width
, *height
,
1334 (const GLfloat (*)[4]) srcImage
,
1335 ctx
->Convolution2D
.Width
,
1336 ctx
->Convolution2D
.Height
,
1337 (const GLfloat (*)[4]) ctx
->Convolution2D
.Filter
,
1338 (GLfloat (*)[4]) dstImage
,
1339 ctx
->Pixel
.ConvolutionBorderColor
[1]);
1341 case GL_REPLICATE_BORDER
:
1342 convolve_2d_replicate(*width
, *height
,
1343 (const GLfloat (*)[4]) srcImage
,
1344 ctx
->Convolution2D
.Width
,
1345 ctx
->Convolution2D
.Height
,
1346 (const GLfloat (*)[4])ctx
->Convolution2D
.Filter
,
1347 (GLfloat (*)[4]) dstImage
);
1356 _mesa_convolve_sep_image(const GLcontext
*ctx
,
1357 GLsizei
*width
, GLsizei
*height
,
1358 const GLfloat
*srcImage
, GLfloat
*dstImage
)
1360 const GLfloat
*rowFilter
= ctx
->Separable2D
.Filter
;
1361 const GLfloat
*colFilter
= rowFilter
+ 4 * MAX_CONVOLUTION_WIDTH
;
1363 switch (ctx
->Pixel
.ConvolutionBorderMode
[2]) {
1365 convolve_sep_reduce(*width
, *height
,
1366 (const GLfloat (*)[4]) srcImage
,
1367 ctx
->Separable2D
.Width
,
1368 ctx
->Separable2D
.Height
,
1369 (const GLfloat (*)[4]) rowFilter
,
1370 (const GLfloat (*)[4]) colFilter
,
1371 (GLfloat (*)[4]) dstImage
);
1372 *width
= *width
- (MAX2(ctx
->Separable2D
.Width
, 1) - 1);
1373 *height
= *height
- (MAX2(ctx
->Separable2D
.Height
, 1) - 1);
1375 case GL_CONSTANT_BORDER
:
1376 convolve_sep_constant(*width
, *height
,
1377 (const GLfloat (*)[4]) srcImage
,
1378 ctx
->Separable2D
.Width
,
1379 ctx
->Separable2D
.Height
,
1380 (const GLfloat (*)[4]) rowFilter
,
1381 (const GLfloat (*)[4]) colFilter
,
1382 (GLfloat (*)[4]) dstImage
,
1383 ctx
->Pixel
.ConvolutionBorderColor
[2]);
1385 case GL_REPLICATE_BORDER
:
1386 convolve_sep_replicate(*width
, *height
,
1387 (const GLfloat (*)[4]) srcImage
,
1388 ctx
->Separable2D
.Width
,
1389 ctx
->Separable2D
.Height
,
1390 (const GLfloat (*)[4]) rowFilter
,
1391 (const GLfloat (*)[4]) colFilter
,
1392 (GLfloat (*)[4]) dstImage
);
1402 * This function computes an image's size after convolution.
1403 * If the convolution border mode is GL_REDUCE, the post-convolution
1404 * image will be smaller than the original.
1407 _mesa_adjust_image_for_convolution(const GLcontext
*ctx
, GLuint dimensions
,
1408 GLsizei
*width
, GLsizei
*height
)
1410 if (ctx
->Pixel
.Convolution1DEnabled
1412 && ctx
->Pixel
.ConvolutionBorderMode
[0] == GL_REDUCE
) {
1413 *width
= *width
- (MAX2(ctx
->Convolution1D
.Width
, 1) - 1);
1415 else if (ctx
->Pixel
.Convolution2DEnabled
1417 && ctx
->Pixel
.ConvolutionBorderMode
[1] == GL_REDUCE
) {
1418 *width
= *width
- (MAX2(ctx
->Convolution2D
.Width
, 1) - 1);
1419 *height
= *height
- (MAX2(ctx
->Convolution2D
.Height
, 1) - 1);
1421 else if (ctx
->Pixel
.Separable2DEnabled
1423 && ctx
->Pixel
.ConvolutionBorderMode
[2] == GL_REDUCE
) {
1424 *width
= *width
- (MAX2(ctx
->Separable2D
.Width
, 1) - 1);
1425 *height
= *height
- (MAX2(ctx
->Separable2D
.Height
, 1) - 1);