1 /**************************************************************************
3 * Copyright 2008 VMware, Inc.
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 VMWARE 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 "util/u_debug.h"
38 #include "pipe/p_defines.h"
39 #include "util/u_inlines.h"
40 #include "pipe/p_shader_tokens.h"
41 #include "pipe/p_state.h"
43 #include "util/u_blit.h"
44 #include "util/u_draw_quad.h"
45 #include "util/u_format.h"
46 #include "util/u_math.h"
47 #include "util/u_memory.h"
48 #include "util/u_sampler.h"
49 #include "util/u_texture.h"
50 #include "util/u_simple_shaders.h"
52 #include "cso_cache/cso_context.h"
57 struct pipe_context
*pipe
;
58 struct cso_context
*cso
;
60 struct pipe_blend_state blend_write_color
;
61 struct pipe_depth_stencil_alpha_state dsa_keep_depthstencil
;
62 struct pipe_rasterizer_state rasterizer
;
63 struct pipe_sampler_state sampler
;
64 struct pipe_viewport_state viewport
;
65 struct pipe_vertex_element velem
[2];
68 void *fs
[PIPE_MAX_TEXTURE_TYPES
][4];
70 struct pipe_resource
*vbuf
; /**< quad vertices */
73 float vertices
[4][2][4]; /**< vertex/texcoords for quad */
78 * Create state object for blit.
79 * Intended to be created once and re-used for many blit() calls.
82 util_create_blit(struct pipe_context
*pipe
, struct cso_context
*cso
)
84 struct blit_state
*ctx
;
87 ctx
= CALLOC_STRUCT(blit_state
);
94 /* disabled blending/masking */
95 ctx
->blend_write_color
.rt
[0].colormask
= PIPE_MASK_RGBA
;
98 ctx
->rasterizer
.cull_face
= PIPE_FACE_NONE
;
99 ctx
->rasterizer
.half_pixel_center
= 1;
100 ctx
->rasterizer
.bottom_edge_rule
= 1;
101 ctx
->rasterizer
.depth_clip_near
= 1;
102 ctx
->rasterizer
.depth_clip_far
= 1;
105 ctx
->sampler
.wrap_s
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
106 ctx
->sampler
.wrap_t
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
107 ctx
->sampler
.wrap_r
= PIPE_TEX_WRAP_CLAMP_TO_EDGE
;
108 ctx
->sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
109 ctx
->sampler
.min_img_filter
= 0; /* set later */
110 ctx
->sampler
.mag_img_filter
= 0; /* set later */
112 /* vertex elements state */
113 for (i
= 0; i
< 2; i
++) {
114 ctx
->velem
[i
].src_offset
= i
* 4 * sizeof(float);
115 ctx
->velem
[i
].instance_divisor
= 0;
116 ctx
->velem
[i
].vertex_buffer_index
= 0;
117 ctx
->velem
[i
].src_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
122 /* init vertex data that doesn't change */
123 for (i
= 0; i
< 4; i
++) {
124 ctx
->vertices
[i
][0][3] = 1.0f
; /* w */
125 ctx
->vertices
[i
][1][3] = 1.0f
; /* q */
133 * Destroy a blit context
136 util_destroy_blit(struct blit_state
*ctx
)
138 struct pipe_context
*pipe
= ctx
->pipe
;
142 pipe
->delete_vs_state(pipe
, ctx
->vs
);
144 for (i
= 0; i
< ARRAY_SIZE(ctx
->fs
); i
++) {
145 for (j
= 0; j
< ARRAY_SIZE(ctx
->fs
[i
]); j
++) {
147 pipe
->delete_fs_state(pipe
, ctx
->fs
[i
][j
]);
151 pipe_resource_reference(&ctx
->vbuf
, NULL
);
158 * Helper function to set the fragment shaders.
161 set_fragment_shader(struct blit_state
*ctx
,
162 enum pipe_format format
,
164 enum pipe_texture_target pipe_tex
)
166 enum tgsi_return_type stype
;
169 if (util_format_is_pure_uint(format
)) {
170 stype
= TGSI_RETURN_TYPE_UINT
;
172 } else if (util_format_is_pure_sint(format
)) {
173 stype
= TGSI_RETURN_TYPE_SINT
;
176 stype
= TGSI_RETURN_TYPE_FLOAT
;
181 assert(stype
== TGSI_RETURN_TYPE_FLOAT
);
183 if (!ctx
->fs
[pipe_tex
][idx
]) {
184 enum tgsi_texture_type tgsi_tex
=
185 util_pipe_tex_to_tgsi_tex(pipe_tex
, 0);
186 ctx
->fs
[pipe_tex
][idx
] =
187 util_make_fragment_tex_shader_xrbias(ctx
->pipe
, tgsi_tex
);
190 else if (!ctx
->fs
[pipe_tex
][idx
]) {
191 enum tgsi_texture_type tgsi_tex
= util_pipe_tex_to_tgsi_tex(pipe_tex
, 0);
193 /* OpenGL does not allow blits from signed to unsigned integer
195 ctx
->fs
[pipe_tex
][idx
] =
196 util_make_fragment_tex_shader_writemask(ctx
->pipe
, tgsi_tex
,
197 TGSI_INTERPOLATE_LINEAR
,
199 stype
, stype
, false, false);
202 cso_set_fragment_shader_handle(ctx
->cso
, ctx
->fs
[pipe_tex
][idx
]);
207 * Helper function to set the vertex shader.
210 set_vertex_shader(struct blit_state
*ctx
)
212 /* vertex shader - still required to provide the linkage between
213 * fragment shader input semantics and vertex_element/buffers.
216 const uint semantic_names
[] = { TGSI_SEMANTIC_POSITION
,
217 TGSI_SEMANTIC_GENERIC
};
218 const uint semantic_indexes
[] = { 0, 0 };
219 ctx
->vs
= util_make_vertex_passthrough_shader(ctx
->pipe
, 2,
221 semantic_indexes
, FALSE
);
224 cso_set_vertex_shader_handle(ctx
->cso
, ctx
->vs
);
229 * Get offset of next free slot in vertex buffer for quad vertices.
232 get_next_slot(struct blit_state
*ctx
)
234 const unsigned max_slots
= 4096 / sizeof ctx
->vertices
;
236 if (ctx
->vbuf_slot
>= max_slots
) {
237 pipe_resource_reference(&ctx
->vbuf
, NULL
);
242 ctx
->vbuf
= pipe_buffer_create(ctx
->pipe
->screen
,
243 PIPE_BIND_VERTEX_BUFFER
,
245 max_slots
* sizeof ctx
->vertices
);
248 return ctx
->vbuf_slot
++ * sizeof ctx
->vertices
;
255 * Setup vertex data for the textured quad we'll draw.
258 * FIXME: We should call util_map_texcoords2d_onto_cubemap
262 setup_vertex_data_tex(struct blit_state
*ctx
,
263 enum pipe_texture_target src_target
,
265 float x0
, float y0
, float x1
, float y1
,
266 float s0
, float t0
, float s1
, float t1
,
271 ctx
->vertices
[0][0][0] = x0
;
272 ctx
->vertices
[0][0][1] = y0
;
273 ctx
->vertices
[0][0][2] = z
;
274 ctx
->vertices
[0][1][0] = s0
; /*s*/
275 ctx
->vertices
[0][1][1] = t0
; /*t*/
276 ctx
->vertices
[0][1][2] = 0; /*r*/
278 ctx
->vertices
[1][0][0] = x1
;
279 ctx
->vertices
[1][0][1] = y0
;
280 ctx
->vertices
[1][0][2] = z
;
281 ctx
->vertices
[1][1][0] = s1
; /*s*/
282 ctx
->vertices
[1][1][1] = t0
; /*t*/
283 ctx
->vertices
[1][1][2] = 0; /*r*/
285 ctx
->vertices
[2][0][0] = x1
;
286 ctx
->vertices
[2][0][1] = y1
;
287 ctx
->vertices
[2][0][2] = z
;
288 ctx
->vertices
[2][1][0] = s1
;
289 ctx
->vertices
[2][1][1] = t1
;
290 ctx
->vertices
[3][1][2] = 0;
292 ctx
->vertices
[3][0][0] = x0
;
293 ctx
->vertices
[3][0][1] = y1
;
294 ctx
->vertices
[3][0][2] = z
;
295 ctx
->vertices
[3][1][0] = s0
;
296 ctx
->vertices
[3][1][1] = t1
;
297 ctx
->vertices
[3][1][2] = 0;
299 if (src_target
== PIPE_TEXTURE_CUBE
||
300 src_target
== PIPE_TEXTURE_CUBE_ARRAY
) {
301 /* Map cubemap texture coordinates inplace. */
302 const unsigned stride
=
303 sizeof ctx
->vertices
[0] / sizeof ctx
->vertices
[0][0][0];
304 util_map_texcoords2d_onto_cubemap(src_face
,
305 &ctx
->vertices
[0][1][0], stride
,
306 &ctx
->vertices
[0][1][0], stride
,
310 offset
= get_next_slot(ctx
);
313 pipe_buffer_write_nooverlap(ctx
->pipe
, ctx
->vbuf
,
314 offset
, sizeof(ctx
->vertices
), ctx
->vertices
);
322 * \return TRUE if two regions overlap, FALSE otherwise
325 regions_overlap(int srcX0
, int srcY0
,
326 int srcX1
, int srcY1
,
327 int dstX0
, int dstY0
,
328 int dstX1
, int dstY1
)
330 if (MAX2(srcX0
, srcX1
) <= MIN2(dstX0
, dstX1
))
331 return FALSE
; /* src completely left of dst */
333 if (MAX2(dstX0
, dstX1
) <= MIN2(srcX0
, srcX1
))
334 return FALSE
; /* dst completely left of src */
336 if (MAX2(srcY0
, srcY1
) <= MIN2(dstY0
, dstY1
))
337 return FALSE
; /* src completely above dst */
339 if (MAX2(dstY0
, dstY1
) <= MIN2(srcY0
, srcY1
))
340 return FALSE
; /* dst completely above src */
342 return TRUE
; /* some overlap */
347 * Can we blit from src format to dest format with a simple copy?
350 formats_compatible(enum pipe_format src_format
,
351 enum pipe_format dst_format
)
353 if (src_format
== dst_format
) {
357 const struct util_format_description
*src_desc
=
358 util_format_description(src_format
);
359 const struct util_format_description
*dst_desc
=
360 util_format_description(dst_format
);
361 return util_is_format_compatible(src_desc
, dst_desc
);
367 * Copy pixel block from src surface to dst surface.
368 * Overlapping regions are acceptable.
369 * Flipping and stretching are supported.
370 * \param filter one of PIPE_TEX_FILTER_NEAREST/LINEAR
371 * \param writemask bitmask of PIPE_MASK_[RGBAZS]. Controls which channels
372 * in the dest surface are sourced from the src surface.
373 * Disabled color channels are sourced from (0,0,0,1).
376 util_blit_pixels(struct blit_state
*ctx
,
377 struct pipe_resource
*src_tex
,
379 int srcX0
, int srcY0
,
380 int srcX1
, int srcY1
,
382 struct pipe_surface
*dst
,
383 int dstX0
, int dstY0
,
384 int dstX1
, int dstY1
,
385 MAYBE_UNUSED
float z
,
386 enum pipe_tex_filter filter
,
389 struct pipe_context
*pipe
= ctx
->pipe
;
390 enum pipe_format src_format
, dst_format
;
391 const int srcW
= abs(srcX1
- srcX0
);
392 const int srcH
= abs(srcY1
- srcY0
);
394 boolean is_stencil
, is_depth
, blit_depth
, blit_stencil
;
395 const struct util_format_description
*src_desc
=
396 util_format_description(src_tex
->format
);
397 struct pipe_blit_info info
;
399 assert(filter
== PIPE_TEX_FILTER_NEAREST
||
400 filter
== PIPE_TEX_FILTER_LINEAR
);
402 assert(src_level
<= src_tex
->last_level
);
404 /* do the regions overlap? */
405 overlap
= src_tex
== dst
->texture
&&
406 dst
->u
.tex
.level
== src_level
&&
407 dst
->u
.tex
.first_layer
== srcZ0
&&
408 regions_overlap(srcX0
, srcY0
, srcX1
, srcY1
,
409 dstX0
, dstY0
, dstX1
, dstY1
);
411 src_format
= util_format_linear(src_tex
->format
);
412 dst_format
= util_format_linear(dst
->texture
->format
);
414 /* See whether we will blit depth or stencil. */
415 is_depth
= util_format_has_depth(src_desc
);
416 is_stencil
= util_format_has_stencil(src_desc
);
418 blit_depth
= is_depth
&& (writemask
& PIPE_MASK_Z
);
419 blit_stencil
= is_stencil
&& (writemask
& PIPE_MASK_S
);
421 if (is_depth
|| is_stencil
) {
422 assert((writemask
& PIPE_MASK_RGBA
) == 0);
423 assert(blit_depth
|| blit_stencil
);
426 assert((writemask
& PIPE_MASK_ZS
) == 0);
428 assert(!blit_stencil
);
432 * XXX: z parameter is deprecated. dst->u.tex.first_layer
433 * specificies the destination layer.
438 * Check for simple case: no format conversion, no flipping, no stretching,
439 * no overlapping, same number of samples.
440 * Filter mode should not matter since there's no stretching.
442 if (formats_compatible(src_format
, dst_format
) &&
443 src_tex
->nr_samples
== dst
->texture
->nr_samples
&&
444 is_stencil
== blit_stencil
&&
445 is_depth
== blit_depth
&&
450 (dstX1
- dstX0
) == (srcX1
- srcX0
) &&
451 (dstY1
- dstY0
) == (srcY1
- srcY0
) &&
453 struct pipe_box src_box
;
457 src_box
.width
= srcW
;
458 src_box
.height
= srcH
;
460 pipe
->resource_copy_region(pipe
,
461 dst
->texture
, dst
->u
.tex
.level
,
462 dstX0
, dstY0
, dst
->u
.tex
.first_layer
,/* dest */
468 memset(&info
, 0, sizeof info
);
469 info
.dst
.resource
= dst
->texture
;
470 info
.dst
.level
= dst
->u
.tex
.level
;
471 info
.dst
.box
.x
= dstX0
;
472 info
.dst
.box
.y
= dstY0
;
473 info
.dst
.box
.z
= dst
->u
.tex
.first_layer
;
474 info
.dst
.box
.width
= dstX1
- dstX0
;
475 info
.dst
.box
.height
= dstY1
- dstY0
;
476 assert(info
.dst
.box
.width
>= 0);
477 assert(info
.dst
.box
.height
>= 0);
478 info
.dst
.box
.depth
= 1;
479 info
.dst
.format
= dst_format
;
480 info
.src
.resource
= src_tex
;
481 info
.src
.level
= src_level
;
482 info
.src
.box
.x
= srcX0
;
483 info
.src
.box
.y
= srcY0
;
484 info
.src
.box
.z
= srcZ0
;
485 info
.src
.box
.width
= srcX1
- srcX0
;
486 info
.src
.box
.height
= srcY1
- srcY0
;
487 info
.src
.box
.depth
= 1;
488 info
.src
.format
= src_format
;
489 info
.mask
= writemask
;
490 info
.filter
= filter
;
491 info
.scissor_enable
= 0;
493 pipe
->blit(pipe
, &info
);
498 * Copy pixel block from src sampler view to dst surface.
500 * The sampler view's first_level field indicates the source
501 * mipmap level to use.
503 * The sampler view's first_layer indicate the layer to use, but for
504 * cube maps it must point to the first face. Face is passed in src_face.
506 * The main advantage over util_blit_pixels is that it allows to specify
507 * swizzles in pipe_sampler_view::swizzle_?.
509 * But there is no control over blitting Z and/or stencil.
512 util_blit_pixels_tex(struct blit_state
*ctx
,
513 struct pipe_sampler_view
*src_sampler_view
,
514 int srcX0
, int srcY0
,
515 int srcX1
, int srcY1
,
517 struct pipe_surface
*dst
,
518 int dstX0
, int dstY0
,
519 int dstX1
, int dstY1
,
520 float z
, enum pipe_tex_filter filter
,
523 boolean normalized
= src_sampler_view
->texture
->target
!= PIPE_TEXTURE_RECT
;
524 struct pipe_framebuffer_state fb
;
525 float s0
, t0
, s1
, t1
;
527 struct pipe_resource
*tex
= src_sampler_view
->texture
;
529 assert(filter
== PIPE_TEX_FILTER_NEAREST
||
530 filter
== PIPE_TEX_FILTER_LINEAR
);
533 assert(tex
->width0
!= 0);
534 assert(tex
->height0
!= 0);
542 /* normalize according to the mipmap level's size */
543 int level
= src_sampler_view
->u
.tex
.first_level
;
544 float w
= (float) u_minify(tex
->width0
, level
);
545 float h
= (float) u_minify(tex
->height0
, level
);
552 assert(ctx
->pipe
->screen
->is_format_supported(ctx
->pipe
->screen
, dst
->format
,
554 dst
->texture
->nr_samples
,
555 dst
->texture
->nr_storage_samples
,
556 PIPE_BIND_RENDER_TARGET
));
558 /* save state (restored below) */
559 cso_save_state(ctx
->cso
, (CSO_BIT_BLEND
|
560 CSO_BIT_DEPTH_STENCIL_ALPHA
|
562 CSO_BIT_SAMPLE_MASK
|
563 CSO_BIT_MIN_SAMPLES
|
564 CSO_BIT_FRAGMENT_SAMPLERS
|
565 CSO_BIT_FRAGMENT_SAMPLER_VIEWS
|
566 CSO_BIT_STREAM_OUTPUTS
|
568 CSO_BIT_FRAMEBUFFER
|
569 CSO_BIT_PAUSE_QUERIES
|
570 CSO_BIT_FRAGMENT_SHADER
|
571 CSO_BIT_VERTEX_SHADER
|
572 CSO_BIT_TESSCTRL_SHADER
|
573 CSO_BIT_TESSEVAL_SHADER
|
574 CSO_BIT_GEOMETRY_SHADER
|
575 CSO_BIT_VERTEX_ELEMENTS
|
576 CSO_BIT_AUX_VERTEX_BUFFER_SLOT
));
578 /* set misc state we care about */
579 cso_set_blend(ctx
->cso
, &ctx
->blend_write_color
);
580 cso_set_depth_stencil_alpha(ctx
->cso
, &ctx
->dsa_keep_depthstencil
);
581 cso_set_sample_mask(ctx
->cso
, ~0);
582 cso_set_min_samples(ctx
->cso
, 1);
583 cso_set_rasterizer(ctx
->cso
, &ctx
->rasterizer
);
584 cso_set_vertex_elements(ctx
->cso
, 2, ctx
->velem
);
585 cso_set_stream_outputs(ctx
->cso
, 0, NULL
, NULL
);
588 ctx
->sampler
.normalized_coords
= normalized
;
589 ctx
->sampler
.min_img_filter
= filter
;
590 ctx
->sampler
.mag_img_filter
= filter
;
592 const struct pipe_sampler_state
*samplers
[] = {&ctx
->sampler
};
593 cso_set_samplers(ctx
->cso
, PIPE_SHADER_FRAGMENT
, 1, samplers
);
597 ctx
->viewport
.scale
[0] = 0.5f
* dst
->width
;
598 ctx
->viewport
.scale
[1] = 0.5f
* dst
->height
;
599 ctx
->viewport
.scale
[2] = 0.5f
;
600 ctx
->viewport
.translate
[0] = 0.5f
* dst
->width
;
601 ctx
->viewport
.translate
[1] = 0.5f
* dst
->height
;
602 ctx
->viewport
.translate
[2] = 0.5f
;
603 cso_set_viewport(ctx
->cso
, &ctx
->viewport
);
606 cso_set_sampler_views(ctx
->cso
, PIPE_SHADER_FRAGMENT
, 1, &src_sampler_view
);
609 set_fragment_shader(ctx
, src_sampler_view
->format
,
611 src_sampler_view
->texture
->target
);
612 set_vertex_shader(ctx
);
613 cso_set_tessctrl_shader_handle(ctx
->cso
, NULL
);
614 cso_set_tesseval_shader_handle(ctx
->cso
, NULL
);
615 cso_set_geometry_shader_handle(ctx
->cso
, NULL
);
618 memset(&fb
, 0, sizeof(fb
));
619 fb
.width
= dst
->width
;
620 fb
.height
= dst
->height
;
623 cso_set_framebuffer(ctx
->cso
, &fb
);
626 offset
= setup_vertex_data_tex(ctx
,
627 src_sampler_view
->texture
->target
,
629 (float) dstX0
/ dst
->width
* 2.0f
- 1.0f
,
630 (float) dstY0
/ dst
->height
* 2.0f
- 1.0f
,
631 (float) dstX1
/ dst
->width
* 2.0f
- 1.0f
,
632 (float) dstY1
/ dst
->height
* 2.0f
- 1.0f
,
636 util_draw_vertex_buffer(ctx
->pipe
, ctx
->cso
, ctx
->vbuf
, 0,
638 PIPE_PRIM_TRIANGLE_FAN
,
640 2); /* attribs/vert */
642 /* restore state we changed */
643 cso_restore_state(ctx
->cso
);