1 /**************************************************************************
3 * Copyright 2009 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 **************************************************************************/
29 #include "util/u_memory.h"
30 #include "util/u_math.h"
31 #include "util/u_rect.h"
32 #include "util/u_surface.h"
33 #include "util/u_pack_color.h"
34 #include "util/u_string.h"
35 #include "util/u_thread.h"
36 #include "util/u_memset.h"
37 #include "util/os_time.h"
39 #include "lp_scene_queue.h"
40 #include "lp_context.h"
46 #include "lp_rast_priv.h"
47 #include "gallivm/lp_bld_format.h"
48 #include "gallivm/lp_bld_debug.h"
50 #include "lp_tex_sample.h"
55 const struct lp_rast_state
*jit_state
= NULL
;
56 const struct lp_rasterizer_task
*jit_task
= NULL
;
59 const float lp_sample_pos_4x
[4][2] = { { 0.375, 0.125 },
65 * Begin rasterizing a scene.
66 * Called once per scene by one thread.
69 lp_rast_begin( struct lp_rasterizer
*rast
,
70 struct lp_scene
*scene
)
72 rast
->curr_scene
= scene
;
74 LP_DBG(DEBUG_RAST
, "%s\n", __FUNCTION__
);
76 lp_scene_begin_rasterization( scene
);
77 lp_scene_bin_iter_begin( scene
);
82 lp_rast_end( struct lp_rasterizer
*rast
)
84 lp_scene_end_rasterization( rast
->curr_scene
);
86 rast
->curr_scene
= NULL
;
91 * Beginning rasterization of a tile.
92 * \param x window X position of the tile, in pixels
93 * \param y window Y position of the tile, in pixels
96 lp_rast_tile_begin(struct lp_rasterizer_task
*task
,
97 const struct cmd_bin
*bin
,
101 struct lp_scene
*scene
= task
->scene
;
103 LP_DBG(DEBUG_RAST
, "%s %d,%d\n", __FUNCTION__
, x
, y
);
106 task
->x
= x
* TILE_SIZE
;
107 task
->y
= y
* TILE_SIZE
;
108 task
->width
= TILE_SIZE
+ x
* TILE_SIZE
> task
->scene
->fb
.width
?
109 task
->scene
->fb
.width
- x
* TILE_SIZE
: TILE_SIZE
;
110 task
->height
= TILE_SIZE
+ y
* TILE_SIZE
> task
->scene
->fb
.height
?
111 task
->scene
->fb
.height
- y
* TILE_SIZE
: TILE_SIZE
;
113 task
->thread_data
.vis_counter
= 0;
114 task
->thread_data
.ps_invocations
= 0;
116 for (i
= 0; i
< task
->scene
->fb
.nr_cbufs
; i
++) {
117 if (task
->scene
->fb
.cbufs
[i
]) {
118 task
->color_tiles
[i
] = scene
->cbufs
[i
].map
+
119 scene
->cbufs
[i
].stride
* task
->y
+
120 scene
->cbufs
[i
].format_bytes
* task
->x
;
123 if (task
->scene
->fb
.zsbuf
) {
124 task
->depth_tile
= scene
->zsbuf
.map
+
125 scene
->zsbuf
.stride
* task
->y
+
126 scene
->zsbuf
.format_bytes
* task
->x
;
132 * Clear the rasterizer's current color tile.
133 * This is a bin command called during bin processing.
134 * Clear commands always clear all bound layers.
137 lp_rast_clear_color(struct lp_rasterizer_task
*task
,
138 const union lp_rast_cmd_arg arg
)
140 const struct lp_scene
*scene
= task
->scene
;
141 unsigned cbuf
= arg
.clear_rb
->cbuf
;
143 enum pipe_format format
;
145 /* we never bin clear commands for non-existing buffers */
146 assert(cbuf
< scene
->fb
.nr_cbufs
);
147 assert(scene
->fb
.cbufs
[cbuf
]);
149 format
= scene
->fb
.cbufs
[cbuf
]->format
;
150 uc
= arg
.clear_rb
->color_val
;
153 * this is pretty rough since we have target format (bunch of bytes...) here.
154 * dump it as raw 4 dwords.
156 LP_DBG(DEBUG_RAST
, "%s clear value (target format %d) raw 0x%x,0x%x,0x%x,0x%x\n",
157 __FUNCTION__
, format
, uc
.ui
[0], uc
.ui
[1], uc
.ui
[2], uc
.ui
[3]);
160 util_fill_box(scene
->cbufs
[cbuf
].map
,
162 scene
->cbufs
[cbuf
].stride
,
163 scene
->cbufs
[cbuf
].layer_stride
,
169 scene
->fb_max_layer
+ 1,
172 /* this will increase for each rb which probably doesn't mean much */
173 LP_COUNT(nr_color_tile_clear
);
178 * Clear the rasterizer's current z/stencil tile.
179 * This is a bin command called during bin processing.
180 * Clear commands always clear all bound layers.
183 lp_rast_clear_zstencil(struct lp_rasterizer_task
*task
,
184 const union lp_rast_cmd_arg arg
)
186 const struct lp_scene
*scene
= task
->scene
;
187 uint64_t clear_value64
= arg
.clear_zstencil
.value
;
188 uint64_t clear_mask64
= arg
.clear_zstencil
.mask
;
189 uint32_t clear_value
= (uint32_t) clear_value64
;
190 uint32_t clear_mask
= (uint32_t) clear_mask64
;
191 const unsigned height
= task
->height
;
192 const unsigned width
= task
->width
;
193 const unsigned dst_stride
= scene
->zsbuf
.stride
;
198 LP_DBG(DEBUG_RAST
, "%s: value=0x%08x, mask=0x%08x\n",
199 __FUNCTION__
, clear_value
, clear_mask
);
202 * Clear the area of the depth/depth buffer matching this tile.
205 if (scene
->fb
.zsbuf
) {
207 uint8_t *dst_layer
= task
->depth_tile
;
208 block_size
= util_format_get_blocksize(scene
->fb
.zsbuf
->format
);
210 clear_value
&= clear_mask
;
212 for (layer
= 0; layer
<= scene
->fb_max_layer
; layer
++) {
215 switch (block_size
) {
217 assert(clear_mask
== 0xff);
218 for (i
= 0; i
< height
; i
++) {
219 uint8_t *row
= (uint8_t *)dst
;
220 memset(row
, (uint8_t) clear_value
, width
);
225 if (clear_mask
== 0xffff) {
226 for (i
= 0; i
< height
; i
++) {
227 uint16_t *row
= (uint16_t *)dst
;
228 for (j
= 0; j
< width
; j
++)
229 *row
++ = (uint16_t) clear_value
;
234 for (i
= 0; i
< height
; i
++) {
235 uint16_t *row
= (uint16_t *)dst
;
236 for (j
= 0; j
< width
; j
++) {
237 uint16_t tmp
= ~clear_mask
& *row
;
238 *row
++ = clear_value
| tmp
;
245 if (clear_mask
== 0xffffffff) {
246 for (i
= 0; i
< height
; i
++) {
247 util_memset32(dst
, clear_value
, width
);
252 for (i
= 0; i
< height
; i
++) {
253 uint32_t *row
= (uint32_t *)dst
;
254 for (j
= 0; j
< width
; j
++) {
255 uint32_t tmp
= ~clear_mask
& *row
;
256 *row
++ = clear_value
| tmp
;
263 clear_value64
&= clear_mask64
;
264 if (clear_mask64
== 0xffffffffffULL
) {
265 for (i
= 0; i
< height
; i
++) {
266 uint64_t *row
= (uint64_t *)dst
;
267 for (j
= 0; j
< width
; j
++)
268 *row
++ = clear_value64
;
273 for (i
= 0; i
< height
; i
++) {
274 uint64_t *row
= (uint64_t *)dst
;
275 for (j
= 0; j
< width
; j
++) {
276 uint64_t tmp
= ~clear_mask64
& *row
;
277 *row
++ = clear_value64
| tmp
;
288 dst_layer
+= scene
->zsbuf
.layer_stride
;
296 * Run the shader on all blocks in a tile. This is used when a tile is
297 * completely contained inside a triangle.
298 * This is a bin command called during bin processing.
301 lp_rast_shade_tile(struct lp_rasterizer_task
*task
,
302 const union lp_rast_cmd_arg arg
)
304 const struct lp_scene
*scene
= task
->scene
;
305 const struct lp_rast_shader_inputs
*inputs
= arg
.shade_tile
;
306 const struct lp_rast_state
*state
;
307 struct lp_fragment_shader_variant
*variant
;
308 const unsigned tile_x
= task
->x
, tile_y
= task
->y
;
311 if (inputs
->disable
) {
312 /* This command was partially binned and has been disabled */
316 LP_DBG(DEBUG_RAST
, "%s\n", __FUNCTION__
);
323 variant
= state
->variant
;
325 /* render the whole 64x64 tile in 4x4 chunks */
326 for (y
= 0; y
< task
->height
; y
+= 4){
327 for (x
= 0; x
< task
->width
; x
+= 4) {
328 uint8_t *color
[PIPE_MAX_COLOR_BUFS
];
329 unsigned stride
[PIPE_MAX_COLOR_BUFS
];
330 unsigned sample_stride
[PIPE_MAX_COLOR_BUFS
];
331 uint8_t *depth
= NULL
;
332 unsigned depth_stride
= 0;
333 unsigned depth_sample_stride
= 0;
337 for (i
= 0; i
< scene
->fb
.nr_cbufs
; i
++){
338 if (scene
->fb
.cbufs
[i
]) {
339 stride
[i
] = scene
->cbufs
[i
].stride
;
340 sample_stride
[i
] = scene
->cbufs
[i
].sample_stride
;
341 color
[i
] = lp_rast_get_color_block_pointer(task
, i
, tile_x
+ x
,
342 tile_y
+ y
, inputs
->layer
);
346 sample_stride
[i
] = 0;
352 if (scene
->zsbuf
.map
) {
353 depth
= lp_rast_get_depth_block_pointer(task
, tile_x
+ x
,
354 tile_y
+ y
, inputs
->layer
);
355 depth_stride
= scene
->zsbuf
.stride
;
356 depth_sample_stride
= scene
->zsbuf
.sample_stride
;
359 /* Propagate non-interpolated raster state. */
360 task
->thread_data
.raster_state
.viewport_index
= inputs
->viewport_index
;
362 /* run shader on 4x4 block */
363 BEGIN_JIT_CALL(state
, task
);
364 variant
->jit_function
[RAST_WHOLE
]( &state
->jit_context
,
365 tile_x
+ x
, tile_y
+ y
,
377 depth_sample_stride
);
385 * Run the shader on all blocks in a tile. This is used when a tile is
386 * completely contained inside a triangle, and the shader is opaque.
387 * This is a bin command called during bin processing.
390 lp_rast_shade_tile_opaque(struct lp_rasterizer_task
*task
,
391 const union lp_rast_cmd_arg arg
)
393 LP_DBG(DEBUG_RAST
, "%s\n", __FUNCTION__
);
400 lp_rast_shade_tile(task
, arg
);
405 * Compute shading for a 4x4 block of pixels inside a triangle.
406 * This is a bin command called during bin processing.
407 * \param x X position of quad in window coords
408 * \param y Y position of quad in window coords
411 lp_rast_shade_quads_mask(struct lp_rasterizer_task
*task
,
412 const struct lp_rast_shader_inputs
*inputs
,
413 unsigned x
, unsigned y
,
416 const struct lp_rast_state
*state
= task
->state
;
417 struct lp_fragment_shader_variant
*variant
= state
->variant
;
418 const struct lp_scene
*scene
= task
->scene
;
419 uint8_t *color
[PIPE_MAX_COLOR_BUFS
];
420 unsigned stride
[PIPE_MAX_COLOR_BUFS
];
421 unsigned sample_stride
[PIPE_MAX_COLOR_BUFS
];
422 uint8_t *depth
= NULL
;
423 unsigned depth_stride
= 0;
424 unsigned depth_sample_stride
= 0;
430 assert(x
< scene
->tiles_x
* TILE_SIZE
);
431 assert(y
< scene
->tiles_y
* TILE_SIZE
);
432 assert(x
% TILE_VECTOR_WIDTH
== 0);
433 assert(y
% TILE_VECTOR_HEIGHT
== 0);
435 assert((x
% 4) == 0);
436 assert((y
% 4) == 0);
439 for (i
= 0; i
< scene
->fb
.nr_cbufs
; i
++) {
440 if (scene
->fb
.cbufs
[i
]) {
441 stride
[i
] = scene
->cbufs
[i
].stride
;
442 sample_stride
[i
] = scene
->cbufs
[i
].sample_stride
;
443 color
[i
] = lp_rast_get_color_block_pointer(task
, i
, x
, y
,
448 sample_stride
[i
] = 0;
454 if (scene
->zsbuf
.map
) {
455 depth_stride
= scene
->zsbuf
.stride
;
456 depth_sample_stride
= scene
->zsbuf
.sample_stride
;
457 depth
= lp_rast_get_depth_block_pointer(task
, x
, y
, inputs
->layer
);
460 assert(lp_check_alignment(state
->jit_context
.u8_blend_color
, 16));
463 * The rasterizer may produce fragments outside our
464 * allocated 4x4 blocks hence need to filter them out here.
466 if ((x
% TILE_SIZE
) < task
->width
&& (y
% TILE_SIZE
) < task
->height
) {
467 /* Propagate non-interpolated raster state. */
468 task
->thread_data
.raster_state
.viewport_index
= inputs
->viewport_index
;
470 /* run shader on 4x4 block */
471 BEGIN_JIT_CALL(state
, task
);
472 variant
->jit_function
[RAST_EDGE_TEST
](&state
->jit_context
,
485 depth_sample_stride
);
493 * Begin a new occlusion query.
494 * This is a bin command put in all bins.
498 lp_rast_begin_query(struct lp_rasterizer_task
*task
,
499 const union lp_rast_cmd_arg arg
)
501 struct llvmpipe_query
*pq
= arg
.query_obj
;
504 case PIPE_QUERY_OCCLUSION_COUNTER
:
505 case PIPE_QUERY_OCCLUSION_PREDICATE
:
506 case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE
:
507 pq
->start
[task
->thread_index
] = task
->thread_data
.vis_counter
;
509 case PIPE_QUERY_PIPELINE_STATISTICS
:
510 pq
->start
[task
->thread_index
] = task
->thread_data
.ps_invocations
;
520 * End the current occlusion query.
521 * This is a bin command put in all bins.
525 lp_rast_end_query(struct lp_rasterizer_task
*task
,
526 const union lp_rast_cmd_arg arg
)
528 struct llvmpipe_query
*pq
= arg
.query_obj
;
531 case PIPE_QUERY_OCCLUSION_COUNTER
:
532 case PIPE_QUERY_OCCLUSION_PREDICATE
:
533 case PIPE_QUERY_OCCLUSION_PREDICATE_CONSERVATIVE
:
534 pq
->end
[task
->thread_index
] +=
535 task
->thread_data
.vis_counter
- pq
->start
[task
->thread_index
];
536 pq
->start
[task
->thread_index
] = 0;
538 case PIPE_QUERY_TIMESTAMP
:
539 pq
->end
[task
->thread_index
] = os_time_get_nano();
541 case PIPE_QUERY_PIPELINE_STATISTICS
:
542 pq
->end
[task
->thread_index
] +=
543 task
->thread_data
.ps_invocations
- pq
->start
[task
->thread_index
];
544 pq
->start
[task
->thread_index
] = 0;
554 lp_rast_set_state(struct lp_rasterizer_task
*task
,
555 const union lp_rast_cmd_arg arg
)
557 task
->state
= arg
.state
;
563 * Called when we're done writing to a color tile.
566 lp_rast_tile_end(struct lp_rasterizer_task
*task
)
570 for (i
= 0; i
< task
->scene
->num_active_queries
; ++i
) {
571 lp_rast_end_query(task
, lp_rast_arg_query(task
->scene
->active_queries
[i
]));
575 memset(task
->color_tiles
, 0, sizeof(task
->color_tiles
));
576 task
->depth_tile
= NULL
;
581 static lp_rast_cmd_func dispatch
[LP_RAST_OP_MAX
] =
584 lp_rast_clear_zstencil
,
593 lp_rast_triangle_3_4
,
594 lp_rast_triangle_3_16
,
595 lp_rast_triangle_4_16
,
597 lp_rast_shade_tile_opaque
,
601 lp_rast_triangle_32_1
,
602 lp_rast_triangle_32_2
,
603 lp_rast_triangle_32_3
,
604 lp_rast_triangle_32_4
,
605 lp_rast_triangle_32_5
,
606 lp_rast_triangle_32_6
,
607 lp_rast_triangle_32_7
,
608 lp_rast_triangle_32_8
,
609 lp_rast_triangle_32_3_4
,
610 lp_rast_triangle_32_3_16
,
611 lp_rast_triangle_32_4_16
616 do_rasterize_bin(struct lp_rasterizer_task
*task
,
617 const struct cmd_bin
*bin
,
620 const struct cmd_block
*block
;
624 lp_debug_bin(bin
, x
, y
);
626 for (block
= bin
->head
; block
; block
= block
->next
) {
627 for (k
= 0; k
< block
->count
; k
++) {
628 dispatch
[block
->cmd
[k
]]( task
, block
->arg
[k
] );
636 * Rasterize commands for a single bin.
637 * \param x, y position of the bin's tile in the framebuffer
638 * Must be called between lp_rast_begin() and lp_rast_end().
642 rasterize_bin(struct lp_rasterizer_task
*task
,
643 const struct cmd_bin
*bin
, int x
, int y
)
645 lp_rast_tile_begin( task
, bin
, x
, y
);
647 do_rasterize_bin(task
, bin
, x
, y
);
649 lp_rast_tile_end(task
);
654 if (bin
->head
->count
== 1) {
655 if (bin
->head
->cmd
[0] == LP_RAST_OP_SHADE_TILE_OPAQUE
)
656 LP_COUNT(nr_pure_shade_opaque_64
);
657 else if (bin
->head
->cmd
[0] == LP_RAST_OP_SHADE_TILE
)
658 LP_COUNT(nr_pure_shade_64
);
664 /* An empty bin is one that just loads the contents of the tile and
665 * stores them again unchanged. This typically happens when bins have
666 * been flushed for some reason in the middle of a frame, or when
667 * incremental updates are being made to a render target.
669 * Try to avoid doing pointless work in this case.
672 is_empty_bin( const struct cmd_bin
*bin
)
674 return bin
->head
== NULL
;
679 * Rasterize/execute all bins within a scene.
683 rasterize_scene(struct lp_rasterizer_task
*task
,
684 struct lp_scene
*scene
)
688 /* Clear the cache tags. This should not always be necessary but
690 #if LP_USE_TEXTURE_CACHE
691 memset(task
->thread_data
.cache
->cache_tags
, 0,
692 sizeof(task
->thread_data
.cache
->cache_tags
));
693 #if LP_BUILD_FORMAT_CACHE_DEBUG
694 task
->thread_data
.cache
->cache_access_total
= 0;
695 task
->thread_data
.cache
->cache_access_miss
= 0;
699 if (!task
->rast
->no_rast
) {
700 /* loop over scene bins, rasterize each */
706 while ((bin
= lp_scene_bin_iter_next(scene
, &i
, &j
))) {
707 if (!is_empty_bin( bin
))
708 rasterize_bin(task
, bin
, i
, j
);
714 #if LP_BUILD_FORMAT_CACHE_DEBUG
716 uint64_t total
, miss
;
717 total
= task
->thread_data
.cache
->cache_access_total
;
718 miss
= task
->thread_data
.cache
->cache_access_miss
;
720 debug_printf("thread %d cache access %llu miss %llu hit rate %f\n",
721 task
->thread_index
, (long long unsigned)total
,
722 (long long unsigned)miss
,
723 (float)(total
- miss
)/(float)total
);
729 lp_fence_signal(scene
->fence
);
737 * Called by setup module when it has something for us to render.
740 lp_rast_queue_scene( struct lp_rasterizer
*rast
,
741 struct lp_scene
*scene
)
743 LP_DBG(DEBUG_SETUP
, "%s\n", __FUNCTION__
);
745 if (rast
->num_threads
== 0) {
747 unsigned fpstate
= util_fpstate_get();
749 /* Make sure that denorms are treated like zeros. This is
750 * the behavior required by D3D10. OpenGL doesn't care.
752 util_fpstate_set_denorms_to_zero(fpstate
);
754 lp_rast_begin( rast
, scene
);
756 rasterize_scene( &rast
->tasks
[0], scene
);
760 util_fpstate_set(fpstate
);
762 rast
->curr_scene
= NULL
;
765 /* threaded rendering! */
768 lp_scene_enqueue( rast
->full_scenes
, scene
);
770 /* signal the threads that there's work to do */
771 for (i
= 0; i
< rast
->num_threads
; i
++) {
772 pipe_semaphore_signal(&rast
->tasks
[i
].work_ready
);
776 LP_DBG(DEBUG_SETUP
, "%s done \n", __FUNCTION__
);
781 lp_rast_finish( struct lp_rasterizer
*rast
)
783 if (rast
->num_threads
== 0) {
789 /* wait for work to complete */
790 for (i
= 0; i
< rast
->num_threads
; i
++) {
791 pipe_semaphore_wait(&rast
->tasks
[i
].work_done
);
798 * This is the thread's main entrypoint.
799 * It's a simple loop:
802 * 3. signal that we're done
805 thread_function(void *init_data
)
807 struct lp_rasterizer_task
*task
= (struct lp_rasterizer_task
*) init_data
;
808 struct lp_rasterizer
*rast
= task
->rast
;
809 boolean debug
= false;
810 char thread_name
[16];
813 snprintf(thread_name
, sizeof thread_name
, "llvmpipe-%u", task
->thread_index
);
814 u_thread_setname(thread_name
);
816 /* Make sure that denorms are treated like zeros. This is
817 * the behavior required by D3D10. OpenGL doesn't care.
819 fpstate
= util_fpstate_get();
820 util_fpstate_set_denorms_to_zero(fpstate
);
825 debug_printf("thread %d waiting for work\n", task
->thread_index
);
826 pipe_semaphore_wait(&task
->work_ready
);
831 if (task
->thread_index
== 0) {
833 * - get next scene to rasterize
834 * - map the framebuffer surfaces
837 lp_scene_dequeue( rast
->full_scenes
, TRUE
) );
840 /* Wait for all threads to get here so that threads[1+] don't
841 * get a null rast->curr_scene pointer.
843 util_barrier_wait( &rast
->barrier
);
847 debug_printf("thread %d doing work\n", task
->thread_index
);
849 rasterize_scene(task
,
852 /* wait for all threads to finish with this scene */
853 util_barrier_wait( &rast
->barrier
);
855 /* XXX: shouldn't be necessary:
857 if (task
->thread_index
== 0) {
861 /* signal done with work */
863 debug_printf("thread %d done working\n", task
->thread_index
);
865 pipe_semaphore_signal(&task
->work_done
);
869 pipe_semaphore_signal(&task
->work_done
);
877 * Initialize semaphores and spawn the threads.
880 create_rast_threads(struct lp_rasterizer
*rast
)
884 /* NOTE: if num_threads is zero, we won't use any threads */
885 for (i
= 0; i
< rast
->num_threads
; i
++) {
886 pipe_semaphore_init(&rast
->tasks
[i
].work_ready
, 0);
887 pipe_semaphore_init(&rast
->tasks
[i
].work_done
, 0);
888 rast
->threads
[i
] = u_thread_create(thread_function
,
889 (void *) &rast
->tasks
[i
]);
890 if (!rast
->threads
[i
]) {
891 rast
->num_threads
= i
; /* previous thread is max */
900 * Create new lp_rasterizer. If num_threads is zero, don't create any
901 * new threads, do rendering synchronously.
902 * \param num_threads number of rasterizer threads to create
904 struct lp_rasterizer
*
905 lp_rast_create( unsigned num_threads
)
907 struct lp_rasterizer
*rast
;
910 rast
= CALLOC_STRUCT(lp_rasterizer
);
915 rast
->full_scenes
= lp_scene_queue_create();
916 if (!rast
->full_scenes
) {
920 for (i
= 0; i
< MAX2(1, num_threads
); i
++) {
921 struct lp_rasterizer_task
*task
= &rast
->tasks
[i
];
923 task
->thread_index
= i
;
924 task
->thread_data
.cache
= align_malloc(sizeof(struct lp_build_format_cache
),
926 if (!task
->thread_data
.cache
) {
927 goto no_thread_data_cache
;
931 rast
->num_threads
= num_threads
;
933 rast
->no_rast
= debug_get_bool_option("LP_NO_RAST", FALSE
);
935 create_rast_threads(rast
);
937 /* for synchronizing rasterization threads */
938 if (rast
->num_threads
> 0) {
939 util_barrier_init( &rast
->barrier
, rast
->num_threads
);
942 memset(lp_dummy_tile
, 0, sizeof lp_dummy_tile
);
946 no_thread_data_cache
:
947 for (i
= 0; i
< MAX2(1, rast
->num_threads
); i
++) {
948 if (rast
->tasks
[i
].thread_data
.cache
) {
949 align_free(rast
->tasks
[i
].thread_data
.cache
);
953 lp_scene_queue_destroy(rast
->full_scenes
);
963 void lp_rast_destroy( struct lp_rasterizer
*rast
)
967 /* Set exit_flag and signal each thread's work_ready semaphore.
968 * Each thread will be woken up, notice that the exit_flag is set and
969 * break out of its main loop. The thread will then exit.
971 rast
->exit_flag
= TRUE
;
972 for (i
= 0; i
< rast
->num_threads
; i
++) {
973 pipe_semaphore_signal(&rast
->tasks
[i
].work_ready
);
976 /* Wait for threads to terminate before cleaning up per-thread data.
977 * We don't actually call pipe_thread_wait to avoid dead lock on Windows
978 * per https://bugs.freedesktop.org/show_bug.cgi?id=76252 */
979 for (i
= 0; i
< rast
->num_threads
; i
++) {
981 pipe_semaphore_wait(&rast
->tasks
[i
].work_done
);
983 thrd_join(rast
->threads
[i
], NULL
);
987 /* Clean up per-thread data */
988 for (i
= 0; i
< rast
->num_threads
; i
++) {
989 pipe_semaphore_destroy(&rast
->tasks
[i
].work_ready
);
990 pipe_semaphore_destroy(&rast
->tasks
[i
].work_done
);
992 for (i
= 0; i
< MAX2(1, rast
->num_threads
); i
++) {
993 align_free(rast
->tasks
[i
].thread_data
.cache
);
996 /* for synchronizing rasterization threads */
997 if (rast
->num_threads
> 0) {
998 util_barrier_destroy( &rast
->barrier
);
1001 lp_scene_queue_destroy(rast
->full_scenes
);