1 /**************************************************************************
3 * Copyright 2009 VMware, Inc. All Rights Reserved.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 **************************************************************************/
27 #include "VG/openvg.h"
29 #include "vg_context.h"
32 #include "shaders_cache.h"
33 #include "st_inlines.h"
35 #include "pipe/p_context.h"
36 #include "pipe/p_state.h"
37 #include "util/u_inlines.h"
38 #include "pipe/p_screen.h"
39 #include "pipe/p_shader_tokens.h"
41 #include "util/u_format.h"
42 #include "util/u_memory.h"
43 #include "util/u_sampler.h"
46 #include "asm_filters.h"
52 struct vg_shader
* (*setup_shader
)(struct vg_context
*, void *);
54 const void *const_buffer
;
55 VGint const_buffer_len
;
56 VGTilingMode tiling_mode
;
57 struct pipe_sampler_view
*extra_texture_view
;
60 static INLINE
struct pipe_resource
*create_texture_1d(struct vg_context
*ctx
,
61 const VGuint
*color_data
,
62 const VGint color_data_len
)
64 struct pipe_context
*pipe
= ctx
->pipe
;
65 struct pipe_screen
*screen
= pipe
->screen
;
66 struct pipe_resource
*tex
= 0;
67 struct pipe_resource templ
;
69 memset(&templ
, 0, sizeof(templ
));
70 templ
.target
= PIPE_TEXTURE_1D
;
71 templ
.format
= PIPE_FORMAT_B8G8R8A8_UNORM
;
73 templ
.width0
= color_data_len
;
76 templ
.bind
= PIPE_BIND_SAMPLER_VIEW
;
78 tex
= screen
->resource_create(screen
, &templ
);
80 { /* upload color_data */
81 struct pipe_transfer
*transfer
=
82 pipe_get_transfer(pipe
, tex
,
84 PIPE_TRANSFER_READ_WRITE
,
85 0, 0, tex
->width0
, tex
->height0
);
86 void *map
= pipe
->transfer_map(pipe
, transfer
);
87 memcpy(map
, color_data
, sizeof(VGint
)*color_data_len
);
88 pipe
->transfer_unmap(pipe
, transfer
);
89 pipe
->transfer_destroy(pipe
, transfer
);
95 static INLINE
struct pipe_sampler_view
*create_texture_1d_view(struct vg_context
*ctx
,
96 const VGuint
*color_data
,
97 const VGint color_data_len
)
99 struct pipe_context
*pipe
= ctx
->pipe
;
100 struct pipe_resource
*texture
;
101 struct pipe_sampler_view view_templ
;
102 struct pipe_sampler_view
*view
;
104 texture
= create_texture_1d(ctx
, color_data
, color_data_len
);
109 u_sampler_view_default_template(&view_templ
, texture
, texture
->format
);
110 view
= pipe
->create_sampler_view(pipe
, texture
, &view_templ
);
111 /* want the texture to go away if the view is freed */
112 pipe_resource_reference(&texture
, NULL
);
117 static INLINE
struct pipe_surface
* setup_framebuffer(struct vg_image
*dst
)
119 struct vg_context
*ctx
= vg_current_context();
120 struct pipe_context
*pipe
= ctx
->pipe
;
121 struct pipe_framebuffer_state fb
;
122 struct pipe_surface
*dst_surf
= pipe
->screen
->get_tex_surface(
123 pipe
->screen
, dst
->sampler_view
->texture
, 0, 0, 0,
124 PIPE_BIND_RENDER_TARGET
);
127 memset(&fb
, 0, sizeof(fb
));
128 fb
.width
= dst
->x
+ dst_surf
->width
;
129 fb
.height
= dst
->y
+ dst_surf
->height
;
131 fb
.cbufs
[0] = dst_surf
;
134 for (i
= 1; i
< PIPE_MAX_COLOR_BUFS
; ++i
)
137 cso_set_framebuffer(ctx
->cso_context
, &fb
);
142 static void setup_viewport(struct vg_image
*dst
)
144 struct vg_context
*ctx
= vg_current_context();
145 vg_set_viewport(ctx
, VEGA_Y0_TOP
);
148 static void setup_blend()
150 struct vg_context
*ctx
= vg_current_context();
151 struct pipe_blend_state blend
;
152 memset(&blend
, 0, sizeof(blend
));
153 blend
.rt
[0].rgb_src_factor
= PIPE_BLENDFACTOR_ONE
;
154 blend
.rt
[0].alpha_src_factor
= PIPE_BLENDFACTOR_ONE
;
155 blend
.rt
[0].rgb_dst_factor
= PIPE_BLENDFACTOR_ZERO
;
156 blend
.rt
[0].alpha_dst_factor
= PIPE_BLENDFACTOR_ZERO
;
157 if (ctx
->state
.vg
.filter_channel_mask
& VG_RED
)
158 blend
.rt
[0].colormask
|= PIPE_MASK_R
;
159 if (ctx
->state
.vg
.filter_channel_mask
& VG_GREEN
)
160 blend
.rt
[0].colormask
|= PIPE_MASK_G
;
161 if (ctx
->state
.vg
.filter_channel_mask
& VG_BLUE
)
162 blend
.rt
[0].colormask
|= PIPE_MASK_B
;
163 if (ctx
->state
.vg
.filter_channel_mask
& VG_ALPHA
)
164 blend
.rt
[0].colormask
|= PIPE_MASK_A
;
165 blend
.rt
[0].blend_enable
= 0;
166 cso_set_blend(ctx
->cso_context
, &blend
);
169 static void setup_constant_buffer(struct vg_context
*ctx
, const void *buffer
,
172 struct pipe_context
*pipe
= ctx
->pipe
;
173 struct pipe_resource
**cbuf
= &ctx
->filter
.buffer
;
175 /* We always need to get a new buffer, to keep the drivers simple and
176 * avoid gratuitous rendering synchronization. */
177 pipe_resource_reference(cbuf
, NULL
);
179 *cbuf
= pipe_buffer_create(pipe
->screen
,
180 PIPE_BIND_CONSTANT_BUFFER
,
184 st_no_flush_pipe_buffer_write(ctx
, *cbuf
,
185 0, param_bytes
, buffer
);
188 ctx
->pipe
->set_constant_buffer(ctx
->pipe
, PIPE_SHADER_FRAGMENT
, 0, *cbuf
);
191 static void setup_samplers(struct vg_context
*ctx
, struct filter_info
*info
)
193 struct pipe_sampler_state
*samplers
[PIPE_MAX_SAMPLERS
];
194 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
195 struct pipe_sampler_state sampler
[3];
196 int num_samplers
= 0;
197 int num_textures
= 0;
203 sampler_views
[0] = NULL
;
204 sampler_views
[1] = NULL
;
205 sampler_views
[2] = NULL
;
206 sampler_views
[3] = NULL
;
208 memset(&sampler
[0], 0, sizeof(struct pipe_sampler_state
));
209 sampler
[0].wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
210 sampler
[0].wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
211 sampler
[0].wrap_r
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
212 sampler
[0].min_img_filter
= PIPE_TEX_MIPFILTER_LINEAR
;
213 sampler
[0].mag_img_filter
= PIPE_TEX_MIPFILTER_LINEAR
;
214 sampler
[0].normalized_coords
= 1;
216 switch(info
->tiling_mode
) {
218 sampler
[0].wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_BORDER
;
219 sampler
[0].wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_BORDER
;
220 memcpy(sampler
[0].border_color
,
221 ctx
->state
.vg
.tile_fill_color
,
222 sizeof(VGfloat
) * 4);
225 sampler
[0].wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
226 sampler
[0].wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
229 sampler
[0].wrap_s
= PIPE_TEX_WRAP_REPEAT
;
230 sampler
[0].wrap_t
= PIPE_TEX_WRAP_REPEAT
;
232 case VG_TILE_REFLECT
:
233 sampler
[0].wrap_s
= PIPE_TEX_WRAP_MIRROR_REPEAT
;
234 sampler
[0].wrap_t
= PIPE_TEX_WRAP_MIRROR_REPEAT
;
237 debug_assert(!"Unknown tiling mode");
240 samplers
[0] = &sampler
[0];
241 sampler_views
[0] = info
->src
->sampler_view
;
245 if (info
->extra_texture_view
) {
246 memcpy(&sampler
[1], &sampler
[0], sizeof(struct pipe_sampler_state
));
247 samplers
[1] = &sampler
[1];
248 sampler_views
[1] = info
->extra_texture_view
;
254 cso_set_samplers(ctx
->cso_context
, num_samplers
, (const struct pipe_sampler_state
**)samplers
);
255 cso_set_fragment_sampler_views(ctx
->cso_context
, num_textures
, sampler_views
);
258 static struct vg_shader
* setup_color_matrix(struct vg_context
*ctx
, void *user_data
)
260 struct vg_shader
*shader
=
261 shader_create_from_text(ctx
->pipe
, color_matrix_asm
, 200,
262 PIPE_SHADER_FRAGMENT
);
263 cso_set_fragment_shader_handle(ctx
->cso_context
, shader
->driver
);
267 static struct vg_shader
* setup_convolution(struct vg_context
*ctx
, void *user_data
)
270 VGint num_consts
= (VGint
)(long)(user_data
);
271 struct vg_shader
*shader
;
273 snprintf(buffer
, 1023, convolution_asm
, num_consts
, num_consts
/ 2 + 1);
275 shader
= shader_create_from_text(ctx
->pipe
, buffer
, 200,
276 PIPE_SHADER_FRAGMENT
);
278 cso_set_fragment_shader_handle(ctx
->cso_context
, shader
->driver
);
282 static struct vg_shader
* setup_lookup(struct vg_context
*ctx
, void *user_data
)
284 struct vg_shader
*shader
=
285 shader_create_from_text(ctx
->pipe
, lookup_asm
,
286 200, PIPE_SHADER_FRAGMENT
);
288 cso_set_fragment_shader_handle(ctx
->cso_context
, shader
->driver
);
293 static struct vg_shader
* setup_lookup_single(struct vg_context
*ctx
, void *user_data
)
296 VGImageChannel channel
= (VGImageChannel
)(user_data
);
297 struct vg_shader
*shader
;
301 snprintf(buffer
, 1023, lookup_single_asm
, "xxxx");
304 snprintf(buffer
, 1023, lookup_single_asm
, "yyyy");
307 snprintf(buffer
, 1023, lookup_single_asm
, "zzzz");
310 snprintf(buffer
, 1023, lookup_single_asm
, "wwww");
313 debug_assert(!"Unknown color channel");
316 shader
= shader_create_from_text(ctx
->pipe
, buffer
, 200,
317 PIPE_SHADER_FRAGMENT
);
319 cso_set_fragment_shader_handle(ctx
->cso_context
, shader
->driver
);
323 static void execute_filter(struct vg_context
*ctx
,
324 struct filter_info
*info
)
326 struct pipe_surface
*dst_surf
;
327 struct vg_shader
*shader
;
329 cso_save_framebuffer(ctx
->cso_context
);
330 cso_save_fragment_shader(ctx
->cso_context
);
331 cso_save_viewport(ctx
->cso_context
);
332 cso_save_blend(ctx
->cso_context
);
333 cso_save_samplers(ctx
->cso_context
);
334 cso_save_fragment_sampler_views(ctx
->cso_context
);
336 dst_surf
= setup_framebuffer(info
->dst
);
337 setup_viewport(info
->dst
);
339 setup_constant_buffer(ctx
, info
->const_buffer
, info
->const_buffer_len
);
340 shader
= info
->setup_shader(ctx
, info
->user_data
);
341 setup_samplers(ctx
, info
);
343 renderer_draw_texture(ctx
->renderer
,
344 info
->src
->sampler_view
->texture
,
345 info
->dst
->x
, info
->dst
->y
,
346 info
->dst
->x
+ info
->dst
->width
,
347 info
->dst
->y
+ info
->dst
->height
,
348 info
->dst
->x
, info
->dst
->y
,
349 info
->dst
->x
+ info
->dst
->width
,
350 info
->dst
->y
+ info
->dst
->height
);
352 cso_restore_framebuffer(ctx
->cso_context
);
353 cso_restore_fragment_shader(ctx
->cso_context
);
354 cso_restore_viewport(ctx
->cso_context
);
355 cso_restore_blend(ctx
->cso_context
);
356 cso_restore_samplers(ctx
->cso_context
);
357 cso_restore_fragment_sampler_views(ctx
->cso_context
);
359 vg_shader_destroy(ctx
, shader
);
361 pipe_surface_reference(&dst_surf
, NULL
);
364 void vgColorMatrix(VGImage dst
, VGImage src
,
365 const VGfloat
* matrix
)
367 struct vg_context
*ctx
= vg_current_context();
368 struct vg_image
*d
, *s
;
369 struct filter_info info
;
371 if (dst
== VG_INVALID_HANDLE
|| src
== VG_INVALID_HANDLE
) {
372 vg_set_error(ctx
, VG_BAD_HANDLE_ERROR
);
375 if (!matrix
|| !is_aligned(matrix
)) {
376 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
380 d
= (struct vg_image
*)dst
;
381 s
= (struct vg_image
*)src
;
383 if (vg_image_overlaps(d
, s
)) {
384 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
390 info
.setup_shader
= &setup_color_matrix
;
391 info
.user_data
= NULL
;
392 info
.const_buffer
= matrix
;
393 info
.const_buffer_len
= 20 * sizeof(VGfloat
);
394 info
.tiling_mode
= VG_TILE_PAD
;
395 info
.extra_texture_view
= NULL
;
396 execute_filter(ctx
, &info
);
399 static VGfloat
texture_offset(VGfloat width
, VGint kernelSize
, VGint current
, VGint shift
)
401 VGfloat diff
= current
- shift
;
406 void vgConvolve(VGImage dst
, VGImage src
,
407 VGint kernelWidth
, VGint kernelHeight
,
408 VGint shiftX
, VGint shiftY
,
409 const VGshort
* kernel
,
412 VGTilingMode tilingMode
)
414 struct vg_context
*ctx
= vg_current_context();
419 struct vg_image
*d
, *s
;
420 VGint kernel_size
= kernelWidth
* kernelHeight
;
421 struct filter_info info
;
422 const VGint max_kernel_size
= vgGeti(VG_MAX_KERNEL_SIZE
);
424 if (dst
== VG_INVALID_HANDLE
|| src
== VG_INVALID_HANDLE
) {
425 vg_set_error(ctx
, VG_BAD_HANDLE_ERROR
);
429 if (kernelWidth
<= 0 || kernelHeight
<= 0 ||
430 kernelWidth
> max_kernel_size
|| kernelHeight
> max_kernel_size
) {
431 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
435 if (!kernel
|| !is_aligned_to(kernel
, 2)) {
436 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
440 if (tilingMode
< VG_TILE_FILL
||
441 tilingMode
> VG_TILE_REFLECT
) {
442 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
446 d
= (struct vg_image
*)dst
;
447 s
= (struct vg_image
*)src
;
449 if (vg_image_overlaps(d
, s
)) {
450 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
454 vg_validate_state(ctx
);
456 buffer_len
= 8 + 2 * 4 * kernel_size
;
457 buffer
= (VGfloat
*)malloc(buffer_len
* sizeof(VGfloat
));
461 buffer
[2] = 2.f
; /*unused*/
462 buffer
[3] = 4.f
; /*unused*/
464 buffer
[4] = kernelWidth
* kernelHeight
;
470 for (j
= 0; j
< kernelHeight
; ++j
) {
471 for (i
= 0; i
< kernelWidth
; ++i
) {
472 VGint index
= j
* kernelWidth
+ i
;
475 x
= texture_offset(s
->width
, kernelWidth
, i
, shiftX
);
476 y
= texture_offset(s
->height
, kernelHeight
, j
, shiftY
);
478 buffer
[idx
+ index
*4 + 0] = x
;
479 buffer
[idx
+ index
*4 + 1] = y
;
480 buffer
[idx
+ index
*4 + 2] = 0.f
;
481 buffer
[idx
+ index
*4 + 3] = 0.f
;
484 idx
+= kernel_size
* 4;
486 for (j
= 0; j
< kernelHeight
; ++j
) {
487 for (i
= 0; i
< kernelWidth
; ++i
) {
488 /* transpose the kernel */
489 VGint index
= j
* kernelWidth
+ i
;
490 VGint kindex
= (kernelWidth
- i
- 1) * kernelHeight
+ (kernelHeight
- j
- 1);
491 buffer
[idx
+ index
*4 + 0] = kernel
[kindex
];
492 buffer
[idx
+ index
*4 + 1] = kernel
[kindex
];
493 buffer
[idx
+ index
*4 + 2] = kernel
[kindex
];
494 buffer
[idx
+ index
*4 + 3] = kernel
[kindex
];
500 info
.setup_shader
= &setup_convolution
;
501 info
.user_data
= (void*)(long)(buffer_len
/4);
502 info
.const_buffer
= buffer
;
503 info
.const_buffer_len
= buffer_len
* sizeof(VGfloat
);
504 info
.tiling_mode
= tilingMode
;
505 info
.extra_texture_view
= NULL
;
506 execute_filter(ctx
, &info
);
511 void vgSeparableConvolve(VGImage dst
, VGImage src
,
514 VGint shiftX
, VGint shiftY
,
515 const VGshort
* kernelX
,
516 const VGshort
* kernelY
,
519 VGTilingMode tilingMode
)
521 struct vg_context
*ctx
= vg_current_context();
524 const VGint max_kernel_size
= vgGeti(VG_MAX_SEPARABLE_KERNEL_SIZE
);
526 if (dst
== VG_INVALID_HANDLE
|| src
== VG_INVALID_HANDLE
) {
527 vg_set_error(ctx
, VG_BAD_HANDLE_ERROR
);
531 if (kernelWidth
<= 0 || kernelHeight
<= 0 ||
532 kernelWidth
> max_kernel_size
|| kernelHeight
> max_kernel_size
) {
533 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
537 if (!kernelX
|| !kernelY
||
538 !is_aligned_to(kernelX
, 2) || !is_aligned_to(kernelY
, 2)) {
539 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
542 if (tilingMode
< VG_TILE_FILL
||
543 tilingMode
> VG_TILE_REFLECT
) {
544 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
547 kernel
= malloc(sizeof(VGshort
)*kernelWidth
*kernelHeight
);
548 for (i
= 0; i
< kernelWidth
; ++i
) {
549 for (j
= 0; j
< kernelHeight
; ++j
) {
550 kernel
[idx
] = kernelX
[i
] * kernelY
[j
];
554 vgConvolve(dst
, src
, kernelWidth
, kernelHeight
, shiftX
, shiftY
,
555 kernel
, scale
, bias
, tilingMode
);
559 static INLINE VGfloat
compute_gaussian_componenet(VGfloat x
, VGfloat y
,
560 VGfloat stdDeviationX
,
561 VGfloat stdDeviationY
)
563 VGfloat mult
= 1 / ( 2 * M_PI
* stdDeviationX
* stdDeviationY
);
564 VGfloat e
= exp( - ( pow(x
, 2)/(2*pow(stdDeviationX
, 2)) +
565 pow(y
, 2)/(2*pow(stdDeviationY
, 2)) ) );
569 static INLINE VGint
compute_kernel_size(VGfloat deviation
)
571 VGint size
= ceil(2.146 * deviation
);
577 static void compute_gaussian_kernel(VGfloat
*kernel
,
578 VGint width
, VGint height
,
579 VGfloat stdDeviationX
,
580 VGfloat stdDeviationY
)
583 VGfloat scale
= 0.0f
;
585 for (j
= 0; j
< height
; ++j
) {
586 for (i
= 0; i
< width
; ++i
) {
587 VGint idx
= (height
- j
-1) * width
+ (width
- i
-1);
588 kernel
[idx
] = compute_gaussian_componenet(i
-(ceil(width
/2))-1,
590 stdDeviationX
, stdDeviationY
);
591 scale
+= kernel
[idx
];
595 for (j
= 0; j
< height
; ++j
) {
596 for (i
= 0; i
< width
; ++i
) {
597 VGint idx
= j
* width
+ i
;
598 kernel
[idx
] /= scale
;
603 void vgGaussianBlur(VGImage dst
, VGImage src
,
604 VGfloat stdDeviationX
,
605 VGfloat stdDeviationY
,
606 VGTilingMode tilingMode
)
608 struct vg_context
*ctx
= vg_current_context();
609 struct vg_image
*d
, *s
;
610 VGfloat
*buffer
, *kernel
;
611 VGint kernel_width
, kernel_height
, kernel_size
;
614 struct filter_info info
;
616 if (dst
== VG_INVALID_HANDLE
|| src
== VG_INVALID_HANDLE
) {
617 vg_set_error(ctx
, VG_BAD_HANDLE_ERROR
);
620 if (stdDeviationX
<= 0 || stdDeviationY
<= 0) {
621 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
625 if (tilingMode
< VG_TILE_FILL
||
626 tilingMode
> VG_TILE_REFLECT
) {
627 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
631 d
= (struct vg_image
*)dst
;
632 s
= (struct vg_image
*)src
;
634 if (vg_image_overlaps(d
, s
)) {
635 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
639 kernel_width
= compute_kernel_size(stdDeviationX
);
640 kernel_height
= compute_kernel_size(stdDeviationY
);
641 kernel_size
= kernel_width
* kernel_height
;
642 kernel
= malloc(sizeof(VGfloat
)*kernel_size
);
643 compute_gaussian_kernel(kernel
, kernel_width
, kernel_height
,
644 stdDeviationX
, stdDeviationY
);
646 buffer_len
= 8 + 2 * 4 * kernel_size
;
647 buffer
= (VGfloat
*)malloc(buffer_len
* sizeof(VGfloat
));
651 buffer
[2] = 2.f
; /*unused*/
652 buffer
[3] = 4.f
; /*unused*/
654 buffer
[4] = kernel_width
* kernel_height
;
655 buffer
[5] = 1.f
;/*scale*/
656 buffer
[6] = 0.f
;/*bias*/
660 for (j
= 0; j
< kernel_height
; ++j
) {
661 for (i
= 0; i
< kernel_width
; ++i
) {
662 VGint index
= j
* kernel_width
+ i
;
665 x
= texture_offset(s
->width
, kernel_width
, i
, kernel_width
/2);
666 y
= texture_offset(s
->height
, kernel_height
, j
, kernel_height
/2);
668 buffer
[idx
+ index
*4 + 0] = x
;
669 buffer
[idx
+ index
*4 + 1] = y
;
670 buffer
[idx
+ index
*4 + 2] = 0.f
;
671 buffer
[idx
+ index
*4 + 3] = 0.f
;
674 idx
+= kernel_size
* 4;
676 for (j
= 0; j
< kernel_height
; ++j
) {
677 for (i
= 0; i
< kernel_width
; ++i
) {
678 /* transpose the kernel */
679 VGint index
= j
* kernel_width
+ i
;
680 VGint kindex
= (kernel_width
- i
- 1) * kernel_height
+ (kernel_height
- j
- 1);
681 buffer
[idx
+ index
*4 + 0] = kernel
[kindex
];
682 buffer
[idx
+ index
*4 + 1] = kernel
[kindex
];
683 buffer
[idx
+ index
*4 + 2] = kernel
[kindex
];
684 buffer
[idx
+ index
*4 + 3] = kernel
[kindex
];
690 info
.setup_shader
= &setup_convolution
;
691 info
.user_data
= (void*)(long)(buffer_len
/4);
692 info
.const_buffer
= buffer
;
693 info
.const_buffer_len
= buffer_len
* sizeof(VGfloat
);
694 info
.tiling_mode
= tilingMode
;
695 info
.extra_texture_view
= NULL
;
696 execute_filter(ctx
, &info
);
702 void vgLookup(VGImage dst
, VGImage src
,
703 const VGubyte
* redLUT
,
704 const VGubyte
* greenLUT
,
705 const VGubyte
* blueLUT
,
706 const VGubyte
* alphaLUT
,
707 VGboolean outputLinear
,
708 VGboolean outputPremultiplied
)
710 struct vg_context
*ctx
= vg_current_context();
711 struct vg_image
*d
, *s
;
712 VGuint color_data
[256];
714 struct pipe_sampler_view
*lut_texture_view
;
716 struct filter_info info
;
718 if (dst
== VG_INVALID_HANDLE
|| src
== VG_INVALID_HANDLE
) {
719 vg_set_error(ctx
, VG_BAD_HANDLE_ERROR
);
723 if (!redLUT
|| !greenLUT
|| !blueLUT
|| !alphaLUT
) {
724 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
728 d
= (struct vg_image
*)dst
;
729 s
= (struct vg_image
*)src
;
731 if (vg_image_overlaps(d
, s
)) {
732 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
736 for (i
= 0; i
< 256; ++i
) {
737 color_data
[i
] = blueLUT
[i
] << 24 | greenLUT
[i
] << 16 |
738 redLUT
[i
] << 8 | alphaLUT
[i
];
740 lut_texture_view
= create_texture_1d_view(ctx
, color_data
, 255);
749 info
.setup_shader
= &setup_lookup
;
750 info
.user_data
= NULL
;
751 info
.const_buffer
= buffer
;
752 info
.const_buffer_len
= 4 * sizeof(VGfloat
);
753 info
.tiling_mode
= VG_TILE_PAD
;
754 info
.extra_texture_view
= lut_texture_view
;
756 execute_filter(ctx
, &info
);
758 pipe_sampler_view_reference(&lut_texture_view
, NULL
);
761 void vgLookupSingle(VGImage dst
, VGImage src
,
762 const VGuint
* lookupTable
,
763 VGImageChannel sourceChannel
,
764 VGboolean outputLinear
,
765 VGboolean outputPremultiplied
)
767 struct vg_context
*ctx
= vg_current_context();
768 struct vg_image
*d
, *s
;
769 struct pipe_sampler_view
*lut_texture_view
;
771 struct filter_info info
;
772 VGuint color_data
[256];
775 if (dst
== VG_INVALID_HANDLE
|| src
== VG_INVALID_HANDLE
) {
776 vg_set_error(ctx
, VG_BAD_HANDLE_ERROR
);
780 if (!lookupTable
|| !is_aligned(lookupTable
)) {
781 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
785 if (sourceChannel
!= VG_RED
&& sourceChannel
!= VG_GREEN
&&
786 sourceChannel
!= VG_BLUE
&& sourceChannel
!= VG_ALPHA
) {
787 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
791 d
= (struct vg_image
*)dst
;
792 s
= (struct vg_image
*)src
;
794 if (vg_image_overlaps(d
, s
)) {
795 vg_set_error(ctx
, VG_ILLEGAL_ARGUMENT_ERROR
);
799 for (i
= 0; i
< 256; ++i
) {
800 VGuint rgba
= lookupTable
[i
];
801 VGubyte blue
, green
, red
, alpha
;
802 red
= (rgba
& 0xff000000)>>24;
803 green
= (rgba
& 0x00ff0000)>>16;
804 blue
= (rgba
& 0x0000ff00)>> 8;
805 alpha
= (rgba
& 0x000000ff)>> 0;
806 color_data
[i
] = blue
<< 24 | green
<< 16 |
809 lut_texture_view
= create_texture_1d_view(ctx
, color_data
, 256);
818 info
.setup_shader
= &setup_lookup_single
;
819 info
.user_data
= (void*)sourceChannel
;
820 info
.const_buffer
= buffer
;
821 info
.const_buffer_len
= 4 * sizeof(VGfloat
);
822 info
.tiling_mode
= VG_TILE_PAD
;
823 info
.extra_texture_view
= lut_texture_view
;
825 execute_filter(ctx
, &info
);
827 pipe_sampler_view_reference(&lut_texture_view
, NULL
);