1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Copy/blit pixel rect between surfaces
36 #include "pipe/p_context.h"
37 #include "pipe/p_debug.h"
38 #include "pipe/p_defines.h"
39 #include "pipe/p_inlines.h"
40 #include "pipe/p_shader_tokens.h"
42 #include "util/u_blit.h"
43 #include "util/u_draw_quad.h"
44 #include "util/u_math.h"
45 #include "util/u_memory.h"
46 #include "util/u_simple_shaders.h"
48 #include "cso_cache/cso_context.h"
53 struct pipe_context
*pipe
;
54 struct cso_context
*cso
;
56 struct pipe_blend_state blend
;
57 struct pipe_depth_stencil_alpha_state depthstencil
;
58 struct pipe_rasterizer_state rasterizer
;
59 struct pipe_sampler_state sampler
;
60 struct pipe_viewport_state viewport
;
62 struct pipe_shader_state vert_shader
;
63 struct pipe_shader_state frag_shader
;
67 struct pipe_buffer
*vbuf
; /**< quad vertices */
70 float vertices
[4][2][4]; /**< vertex/texcoords for quad */
75 * Create state object for blit.
76 * Intended to be created once and re-used for many blit() calls.
79 util_create_blit(struct pipe_context
*pipe
, struct cso_context
*cso
)
81 struct blit_state
*ctx
;
84 ctx
= CALLOC_STRUCT(blit_state
);
91 /* disabled blending/masking */
92 memset(&ctx
->blend
, 0, sizeof(ctx
->blend
));
93 ctx
->blend
.rgb_src_factor
= PIPE_BLENDFACTOR_ONE
;
94 ctx
->blend
.alpha_src_factor
= PIPE_BLENDFACTOR_ONE
;
95 ctx
->blend
.rgb_dst_factor
= PIPE_BLENDFACTOR_ZERO
;
96 ctx
->blend
.alpha_dst_factor
= PIPE_BLENDFACTOR_ZERO
;
97 ctx
->blend
.colormask
= PIPE_MASK_RGBA
;
99 /* no-op depth/stencil/alpha */
100 memset(&ctx
->depthstencil
, 0, sizeof(ctx
->depthstencil
));
103 memset(&ctx
->rasterizer
, 0, sizeof(ctx
->rasterizer
));
104 ctx
->rasterizer
.front_winding
= PIPE_WINDING_CW
;
105 ctx
->rasterizer
.cull_mode
= PIPE_WINDING_NONE
;
106 ctx
->rasterizer
.bypass_clipping
= 1;
107 /*ctx->rasterizer.bypass_vs = 1;*/
108 ctx
->rasterizer
.gl_rasterization_rules
= 1;
111 memset(&ctx
->sampler
, 0, sizeof(ctx
->sampler
));
112 ctx
->sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
113 ctx
->sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
114 ctx
->sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
115 ctx
->sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
116 ctx
->sampler
.min_img_filter
= 0; /* set later */
117 ctx
->sampler
.mag_img_filter
= 0; /* set later */
118 ctx
->sampler
.normalized_coords
= 1;
120 /* viewport (identity, we setup vertices in wincoords) */
121 ctx
->viewport
.scale
[0] = 1.0;
122 ctx
->viewport
.scale
[1] = 1.0;
123 ctx
->viewport
.scale
[2] = 1.0;
124 ctx
->viewport
.scale
[3] = 1.0;
125 ctx
->viewport
.translate
[0] = 0.0;
126 ctx
->viewport
.translate
[1] = 0.0;
127 ctx
->viewport
.translate
[2] = 0.0;
128 ctx
->viewport
.translate
[3] = 0.0;
132 const uint semantic_names
[] = { TGSI_SEMANTIC_POSITION
,
133 TGSI_SEMANTIC_GENERIC
};
134 const uint semantic_indexes
[] = { 0, 0 };
135 ctx
->vs
= util_make_vertex_passthrough_shader(pipe
, 2, semantic_names
,
140 /* fragment shader */
141 ctx
->fs
= util_make_fragment_tex_shader(pipe
, &ctx
->frag_shader
);
144 /* init vertex data that doesn't change */
145 for (i
= 0; i
< 4; i
++) {
146 ctx
->vertices
[i
][0][3] = 1.0f
; /* w */
147 ctx
->vertices
[i
][1][2] = 0.0f
; /* r */
148 ctx
->vertices
[i
][1][3] = 1.0f
; /* q */
156 * Destroy a blit context
159 util_destroy_blit(struct blit_state
*ctx
)
161 struct pipe_context
*pipe
= ctx
->pipe
;
163 pipe
->delete_vs_state(pipe
, ctx
->vs
);
164 pipe
->delete_fs_state(pipe
, ctx
->fs
);
166 FREE((void*) ctx
->vert_shader
.tokens
);
167 FREE((void*) ctx
->frag_shader
.tokens
);
169 pipe_buffer_reference(pipe
->screen
, &ctx
->vbuf
, NULL
);
175 static unsigned get_next_slot( struct blit_state
*ctx
)
177 const unsigned max_slots
= 4096 / sizeof ctx
->vertices
;
179 if (ctx
->vbuf_slot
>= max_slots
)
180 util_blit_flush( ctx
);
183 ctx
->vbuf
= pipe_buffer_create(ctx
->pipe
->screen
,
185 PIPE_BUFFER_USAGE_VERTEX
,
186 max_slots
* sizeof ctx
->vertices
);
189 return ctx
->vbuf_slot
++ * sizeof ctx
->vertices
;
195 * Setup vertex data for the textured quad we'll draw.
199 setup_vertex_data(struct blit_state
*ctx
,
200 float x0
, float y0
, float x1
, float y1
, float z
)
205 ctx
->vertices
[0][0][0] = x0
;
206 ctx
->vertices
[0][0][1] = y0
;
207 ctx
->vertices
[0][0][2] = z
;
208 ctx
->vertices
[0][1][0] = 0.0f
; /*s*/
209 ctx
->vertices
[0][1][1] = 0.0f
; /*t*/
211 ctx
->vertices
[1][0][0] = x1
;
212 ctx
->vertices
[1][0][1] = y0
;
213 ctx
->vertices
[1][0][2] = z
;
214 ctx
->vertices
[1][1][0] = 1.0f
; /*s*/
215 ctx
->vertices
[1][1][1] = 0.0f
; /*t*/
217 ctx
->vertices
[2][0][0] = x1
;
218 ctx
->vertices
[2][0][1] = y1
;
219 ctx
->vertices
[2][0][2] = z
;
220 ctx
->vertices
[2][1][0] = 1.0f
;
221 ctx
->vertices
[2][1][1] = 1.0f
;
223 ctx
->vertices
[3][0][0] = x0
;
224 ctx
->vertices
[3][0][1] = y1
;
225 ctx
->vertices
[3][0][2] = z
;
226 ctx
->vertices
[3][1][0] = 0.0f
;
227 ctx
->vertices
[3][1][1] = 1.0f
;
229 offset
= get_next_slot( ctx
);
231 buf
= pipe_buffer_map(ctx
->pipe
->screen
, ctx
->vbuf
,
232 PIPE_BUFFER_USAGE_CPU_WRITE
);
234 memcpy((char *)buf
+ offset
, ctx
->vertices
, sizeof(ctx
->vertices
));
236 pipe_buffer_unmap(ctx
->pipe
->screen
, ctx
->vbuf
);
243 * Setup vertex data for the textured quad we'll draw.
247 setup_vertex_data_tex(struct blit_state
*ctx
,
248 float x0
, float y0
, float x1
, float y1
,
249 float s0
, float t0
, float s1
, float t1
,
255 ctx
->vertices
[0][0][0] = x0
;
256 ctx
->vertices
[0][0][1] = y0
;
257 ctx
->vertices
[0][0][2] = z
;
258 ctx
->vertices
[0][1][0] = s0
; /*s*/
259 ctx
->vertices
[0][1][1] = t0
; /*t*/
261 ctx
->vertices
[1][0][0] = x1
;
262 ctx
->vertices
[1][0][1] = y0
;
263 ctx
->vertices
[1][0][2] = z
;
264 ctx
->vertices
[1][1][0] = s1
; /*s*/
265 ctx
->vertices
[1][1][1] = t0
; /*t*/
267 ctx
->vertices
[2][0][0] = x1
;
268 ctx
->vertices
[2][0][1] = y1
;
269 ctx
->vertices
[2][0][2] = z
;
270 ctx
->vertices
[2][1][0] = s1
;
271 ctx
->vertices
[2][1][1] = t1
;
273 ctx
->vertices
[3][0][0] = x0
;
274 ctx
->vertices
[3][0][1] = y1
;
275 ctx
->vertices
[3][0][2] = z
;
276 ctx
->vertices
[3][1][0] = s0
;
277 ctx
->vertices
[3][1][1] = t1
;
279 offset
= get_next_slot( ctx
);
281 buf
= pipe_buffer_map(ctx
->pipe
->screen
, ctx
->vbuf
,
282 PIPE_BUFFER_USAGE_CPU_WRITE
);
284 memcpy((char *)buf
+ offset
, ctx
->vertices
, sizeof(ctx
->vertices
));
286 pipe_buffer_unmap(ctx
->pipe
->screen
, ctx
->vbuf
);
291 * Copy pixel block from src surface to dst surface.
292 * Overlapping regions are acceptable.
293 * XXX need some control over blitting Z and/or stencil.
296 util_blit_pixels(struct blit_state
*ctx
,
297 struct pipe_surface
*src
,
298 int srcX0
, int srcY0
,
299 int srcX1
, int srcY1
,
300 struct pipe_surface
*dst
,
301 int dstX0
, int dstY0
,
302 int dstX1
, int dstY1
,
303 float z
, uint filter
)
305 struct pipe_context
*pipe
= ctx
->pipe
;
306 struct pipe_screen
*screen
= pipe
->screen
;
307 struct pipe_texture texTemp
, *tex
;
308 struct pipe_surface
*texSurf
;
309 struct pipe_framebuffer_state fb
;
310 const int srcW
= abs(srcX1
- srcX0
);
311 const int srcH
= abs(srcY1
- srcY0
);
312 const int srcLeft
= MIN2(srcX0
, srcX1
);
313 const int srcTop
= MIN2(srcY0
, srcY1
);
316 assert(filter
== PIPE_TEX_MIPFILTER_NEAREST
||
317 filter
== PIPE_TEX_MIPFILTER_LINEAR
);
319 if (srcLeft
!= srcX0
) {
320 /* left-right flip */
326 if (srcTop
!= srcY0
) {
333 assert(screen
->is_format_supported(screen
, src
->format
, PIPE_TEXTURE_2D
,
334 PIPE_TEXTURE_USAGE_SAMPLER
, 0));
335 assert(screen
->is_format_supported(screen
, dst
->format
, PIPE_TEXTURE_2D
,
336 PIPE_TEXTURE_USAGE_SAMPLER
, 0));
338 if(dst
->format
== src
->format
&& (dstX1
- dstX0
) == srcW
&& (dstY1
- dstY0
) == srcH
) {
339 /* FIXME: this will most surely fail for overlapping rectangles */
340 pipe
->surface_copy(pipe
, FALSE
,
341 dst
, dstX0
, dstY0
, /* dest */
342 src
, srcX0
, srcY0
, /* src */
343 srcW
, srcH
); /* size */
347 assert(screen
->is_format_supported(screen
, dst
->format
, PIPE_TEXTURE_2D
,
348 PIPE_TEXTURE_USAGE_RENDER_TARGET
, 0));
351 * XXX for now we're always creating a temporary texture.
352 * Strictly speaking that's not always needed.
355 /* create temp texture */
356 memset(&texTemp
, 0, sizeof(texTemp
));
357 texTemp
.target
= PIPE_TEXTURE_2D
;
358 texTemp
.format
= src
->format
;
359 texTemp
.last_level
= 0;
360 texTemp
.width
[0] = srcW
;
361 texTemp
.height
[0] = srcH
;
362 texTemp
.depth
[0] = 1;
363 texTemp
.compressed
= 0;
364 pf_get_block(src
->format
, &texTemp
.block
);
366 tex
= screen
->texture_create(screen
, &texTemp
);
370 texSurf
= screen
->get_tex_surface(screen
, tex
, 0, 0, 0,
371 PIPE_BUFFER_USAGE_GPU_WRITE
);
373 /* load temp texture */
374 pipe
->surface_copy(pipe
, FALSE
,
375 texSurf
, 0, 0, /* dest */
376 src
, srcLeft
, srcTop
, /* src */
377 srcW
, srcH
); /* size */
379 /* free the surface, update the texture if necessary.
381 screen
->tex_surface_release(screen
, &texSurf
);
383 /* save state (restored below) */
384 cso_save_blend(ctx
->cso
);
385 cso_save_depth_stencil_alpha(ctx
->cso
);
386 cso_save_rasterizer(ctx
->cso
);
387 cso_save_samplers(ctx
->cso
);
388 cso_save_sampler_textures(ctx
->cso
);
389 cso_save_framebuffer(ctx
->cso
);
390 cso_save_fragment_shader(ctx
->cso
);
391 cso_save_vertex_shader(ctx
->cso
);
392 cso_save_viewport(ctx
->cso
);
394 /* set misc state we care about */
395 cso_set_blend(ctx
->cso
, &ctx
->blend
);
396 cso_set_depth_stencil_alpha(ctx
->cso
, &ctx
->depthstencil
);
397 cso_set_rasterizer(ctx
->cso
, &ctx
->rasterizer
);
398 cso_set_viewport(ctx
->cso
, &ctx
->viewport
);
401 ctx
->sampler
.min_img_filter
= filter
;
402 ctx
->sampler
.mag_img_filter
= filter
;
403 cso_single_sampler(ctx
->cso
, 0, &ctx
->sampler
);
404 cso_single_sampler_done(ctx
->cso
);
407 cso_set_sampler_textures(ctx
->cso
, 1, &tex
);
410 cso_set_fragment_shader_handle(ctx
->cso
, ctx
->fs
);
411 cso_set_vertex_shader_handle(ctx
->cso
, ctx
->vs
);
414 memset(&fb
, 0, sizeof(fb
));
415 fb
.width
= dst
->width
;
416 fb
.height
= dst
->height
;
419 cso_set_framebuffer(ctx
->cso
, &fb
);
422 offset
= setup_vertex_data(ctx
,
423 (float) dstX0
, (float) dstY0
,
424 (float) dstX1
, (float) dstY1
, z
);
426 util_draw_vertex_buffer(ctx
->pipe
, ctx
->vbuf
, offset
,
427 PIPE_PRIM_TRIANGLE_FAN
,
429 2); /* attribs/vert */
431 /* restore state we changed */
432 cso_restore_blend(ctx
->cso
);
433 cso_restore_depth_stencil_alpha(ctx
->cso
);
434 cso_restore_rasterizer(ctx
->cso
);
435 cso_restore_samplers(ctx
->cso
);
436 cso_restore_sampler_textures(ctx
->cso
);
437 cso_restore_framebuffer(ctx
->cso
);
438 cso_restore_fragment_shader(ctx
->cso
);
439 cso_restore_vertex_shader(ctx
->cso
);
440 cso_restore_viewport(ctx
->cso
);
442 screen
->texture_release(screen
, &tex
);
446 /* Release vertex buffer at end of frame to avoid synchronous
449 void util_blit_flush( struct blit_state
*ctx
)
451 pipe_buffer_reference(ctx
->pipe
->screen
, &ctx
->vbuf
, NULL
);
458 * Copy pixel block from src texture to dst surface.
459 * Overlapping regions are acceptable.
461 * XXX Should support selection of level.
462 * XXX need some control over blitting Z and/or stencil.
465 util_blit_pixels_tex(struct blit_state
*ctx
,
466 struct pipe_texture
*tex
,
467 int srcX0
, int srcY0
,
468 int srcX1
, int srcY1
,
469 struct pipe_surface
*dst
,
470 int dstX0
, int dstY0
,
471 int dstX1
, int dstY1
,
472 float z
, uint filter
)
474 struct pipe_context
*pipe
= ctx
->pipe
;
475 struct pipe_screen
*screen
= pipe
->screen
;
476 struct pipe_framebuffer_state fb
;
477 float s0
, t0
, s1
, t1
;
480 assert(filter
== PIPE_TEX_MIPFILTER_NEAREST
||
481 filter
== PIPE_TEX_MIPFILTER_LINEAR
);
483 assert(tex
->width
[0] != 0);
484 assert(tex
->height
[0] != 0);
486 s0
= srcX0
/ (float)tex
->width
[0];
487 s1
= srcX1
/ (float)tex
->width
[0];
488 t0
= srcY0
/ (float)tex
->height
[0];
489 t1
= srcY1
/ (float)tex
->height
[0];
491 assert(screen
->is_format_supported(screen
, dst
->format
, PIPE_TEXTURE_2D
,
492 PIPE_TEXTURE_USAGE_RENDER_TARGET
, 0));
494 /* save state (restored below) */
495 cso_save_blend(ctx
->cso
);
496 cso_save_depth_stencil_alpha(ctx
->cso
);
497 cso_save_rasterizer(ctx
->cso
);
498 cso_save_samplers(ctx
->cso
);
499 cso_save_sampler_textures(ctx
->cso
);
500 cso_save_framebuffer(ctx
->cso
);
501 cso_save_fragment_shader(ctx
->cso
);
502 cso_save_vertex_shader(ctx
->cso
);
503 cso_save_viewport(ctx
->cso
);
505 /* set misc state we care about */
506 cso_set_blend(ctx
->cso
, &ctx
->blend
);
507 cso_set_depth_stencil_alpha(ctx
->cso
, &ctx
->depthstencil
);
508 cso_set_rasterizer(ctx
->cso
, &ctx
->rasterizer
);
509 cso_set_viewport(ctx
->cso
, &ctx
->viewport
);
512 ctx
->sampler
.min_img_filter
= filter
;
513 ctx
->sampler
.mag_img_filter
= filter
;
514 cso_single_sampler(ctx
->cso
, 0, &ctx
->sampler
);
515 cso_single_sampler_done(ctx
->cso
);
518 cso_set_sampler_textures(ctx
->cso
, 1, &tex
);
521 cso_set_fragment_shader_handle(ctx
->cso
, ctx
->fs
);
522 cso_set_vertex_shader_handle(ctx
->cso
, ctx
->vs
);
525 memset(&fb
, 0, sizeof(fb
));
526 fb
.width
= dst
->width
;
527 fb
.height
= dst
->height
;
530 cso_set_framebuffer(ctx
->cso
, &fb
);
533 offset
= setup_vertex_data_tex(ctx
,
534 (float) dstX0
, (float) dstY0
,
535 (float) dstX1
, (float) dstY1
,
539 util_draw_vertex_buffer(ctx
->pipe
,
541 PIPE_PRIM_TRIANGLE_FAN
,
543 2); /* attribs/vert */
545 /* restore state we changed */
546 cso_restore_blend(ctx
->cso
);
547 cso_restore_depth_stencil_alpha(ctx
->cso
);
548 cso_restore_rasterizer(ctx
->cso
);
549 cso_restore_samplers(ctx
->cso
);
550 cso_restore_sampler_textures(ctx
->cso
);
551 cso_restore_framebuffer(ctx
->cso
);
552 cso_restore_fragment_shader(ctx
->cso
);
553 cso_restore_vertex_shader(ctx
->cso
);
554 cso_restore_viewport(ctx
->cso
);