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"
35 #include "os/os_time.h"
37 #include "lp_scene_queue.h"
38 #include "lp_context.h"
44 #include "lp_rast_priv.h"
45 #include "gallivm/lp_bld_debug.h"
47 #include "lp_tex_sample.h"
52 const struct lp_rast_state
*jit_state
= NULL
;
53 const struct lp_rasterizer_task
*jit_task
= NULL
;
58 * Begin rasterizing a scene.
59 * Called once per scene by one thread.
62 lp_rast_begin( struct lp_rasterizer
*rast
,
63 struct lp_scene
*scene
)
65 rast
->curr_scene
= scene
;
67 LP_DBG(DEBUG_RAST
, "%s\n", __FUNCTION__
);
69 lp_scene_begin_rasterization( scene
);
70 lp_scene_bin_iter_begin( scene
);
75 lp_rast_end( struct lp_rasterizer
*rast
)
77 lp_scene_end_rasterization( rast
->curr_scene
);
79 rast
->curr_scene
= NULL
;
84 * Begining rasterization of a tile.
85 * \param x window X position of the tile, in pixels
86 * \param y window Y position of the tile, in pixels
89 lp_rast_tile_begin(struct lp_rasterizer_task
*task
,
90 const struct cmd_bin
*bin
,
93 LP_DBG(DEBUG_RAST
, "%s %d,%d\n", __FUNCTION__
, x
, y
);
96 task
->x
= x
* TILE_SIZE
;
97 task
->y
= y
* TILE_SIZE
;
98 task
->width
= TILE_SIZE
+ x
* TILE_SIZE
> task
->scene
->fb
.width
?
99 task
->scene
->fb
.width
- x
* TILE_SIZE
: TILE_SIZE
;
100 task
->height
= TILE_SIZE
+ y
* TILE_SIZE
> task
->scene
->fb
.height
?
101 task
->scene
->fb
.height
- y
* TILE_SIZE
: TILE_SIZE
;
103 task
->thread_data
.vis_counter
= 0;
104 task
->ps_invocations
= 0;
106 /* reset pointers to color and depth tile(s) */
107 memset(task
->color_tiles
, 0, sizeof(task
->color_tiles
));
108 task
->depth_tile
= NULL
;
113 * Examine a framebuffer object to determine if any of the colorbuffers
114 * use a pure integer format.
115 * XXX this could be a gallium utility function if useful elsewhere.
118 is_fb_pure_integer(const struct pipe_framebuffer_state
*fb
)
121 for (i
= 0; i
< fb
->nr_cbufs
; i
++) {
123 util_format_is_pure_integer(fb
->cbufs
[i
]->format
)) {
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
;
142 if (scene
->fb
.nr_cbufs
) {
146 if (is_fb_pure_integer(&scene
->fb
)) {
148 * We expect int/uint clear values here, though some APIs
149 * might disagree (but in any case util_pack_color()
150 * couldn't handle it)...
152 LP_DBG(DEBUG_RAST
, "%s pure int 0x%x,0x%x,0x%x,0x%x\n", __FUNCTION__
,
153 arg
.clear_color
.ui
[0],
154 arg
.clear_color
.ui
[1],
155 arg
.clear_color
.ui
[2],
156 arg
.clear_color
.ui
[3]);
158 for (i
= 0; i
< scene
->fb
.nr_cbufs
; i
++) {
159 enum pipe_format format
= scene
->fb
.cbufs
[i
]->format
;
161 if (util_format_is_pure_sint(format
)) {
162 util_format_write_4i(format
, arg
.clear_color
.i
, 0, &uc
, 0, 0, 0, 1, 1);
165 assert(util_format_is_pure_uint(format
));
166 util_format_write_4ui(format
, arg
.clear_color
.ui
, 0, &uc
, 0, 0, 0, 1, 1);
169 util_fill_box(scene
->cbufs
[i
].map
,
171 scene
->cbufs
[i
].stride
,
172 scene
->cbufs
[i
].layer_stride
,
178 scene
->fb_max_layer
+ 1,
183 uint8_t clear_color
[4];
185 for (i
= 0; i
< 4; ++i
) {
186 clear_color
[i
] = float_to_ubyte(arg
.clear_color
.f
[i
]);
189 LP_DBG(DEBUG_RAST
, "%s 0x%x,0x%x,0x%x,0x%x\n", __FUNCTION__
,
195 for (i
= 0; i
< scene
->fb
.nr_cbufs
; i
++) {
196 if (scene
->fb
.cbufs
[i
]) {
197 util_pack_color(arg
.clear_color
.f
,
198 scene
->fb
.cbufs
[i
]->format
, &uc
);
200 util_fill_box(scene
->cbufs
[i
].map
,
201 scene
->fb
.cbufs
[i
]->format
,
202 scene
->cbufs
[i
].stride
,
203 scene
->cbufs
[i
].layer_stride
,
209 scene
->fb_max_layer
+ 1,
216 LP_COUNT(nr_color_tile_clear
);
223 * Clear the rasterizer's current z/stencil tile.
224 * This is a bin command called during bin processing.
225 * Clear commands always clear all bound layers.
228 lp_rast_clear_zstencil(struct lp_rasterizer_task
*task
,
229 const union lp_rast_cmd_arg arg
)
231 const struct lp_scene
*scene
= task
->scene
;
232 uint64_t clear_value64
= arg
.clear_zstencil
.value
;
233 uint64_t clear_mask64
= arg
.clear_zstencil
.mask
;
234 uint32_t clear_value
= (uint32_t) clear_value64
;
235 uint32_t clear_mask
= (uint32_t) clear_mask64
;
236 const unsigned height
= task
->height
;
237 const unsigned width
= task
->width
;
238 const unsigned dst_stride
= scene
->zsbuf
.stride
;
243 LP_DBG(DEBUG_RAST
, "%s: value=0x%08x, mask=0x%08x\n",
244 __FUNCTION__
, clear_value
, clear_mask
);
247 * Clear the area of the depth/depth buffer matching this tile.
250 if (scene
->fb
.zsbuf
) {
252 uint8_t *dst_layer
= lp_rast_get_unswizzled_depth_tile_pointer(task
, LP_TEX_USAGE_READ_WRITE
);
253 block_size
= util_format_get_blocksize(scene
->fb
.zsbuf
->format
);
255 clear_value
&= clear_mask
;
257 for (layer
= 0; layer
<= scene
->fb_max_layer
; layer
++) {
260 switch (block_size
) {
262 assert(clear_mask
== 0xff);
263 memset(dst
, (uint8_t) clear_value
, height
* width
);
266 if (clear_mask
== 0xffff) {
267 for (i
= 0; i
< height
; i
++) {
268 uint16_t *row
= (uint16_t *)dst
;
269 for (j
= 0; j
< width
; j
++)
270 *row
++ = (uint16_t) clear_value
;
275 for (i
= 0; i
< height
; i
++) {
276 uint16_t *row
= (uint16_t *)dst
;
277 for (j
= 0; j
< width
; j
++) {
278 uint16_t tmp
= ~clear_mask
& *row
;
279 *row
++ = clear_value
| tmp
;
286 if (clear_mask
== 0xffffffff) {
287 for (i
= 0; i
< height
; i
++) {
288 uint32_t *row
= (uint32_t *)dst
;
289 for (j
= 0; j
< width
; j
++)
290 *row
++ = clear_value
;
295 for (i
= 0; i
< height
; i
++) {
296 uint32_t *row
= (uint32_t *)dst
;
297 for (j
= 0; j
< width
; j
++) {
298 uint32_t tmp
= ~clear_mask
& *row
;
299 *row
++ = clear_value
| tmp
;
306 clear_value64
&= clear_mask64
;
307 if (clear_mask64
== 0xffffffffffULL
) {
308 for (i
= 0; i
< height
; i
++) {
309 uint64_t *row
= (uint64_t *)dst
;
310 for (j
= 0; j
< width
; j
++)
311 *row
++ = clear_value64
;
316 for (i
= 0; i
< height
; i
++) {
317 uint64_t *row
= (uint64_t *)dst
;
318 for (j
= 0; j
< width
; j
++) {
319 uint64_t tmp
= ~clear_mask64
& *row
;
320 *row
++ = clear_value64
| tmp
;
331 dst_layer
+= scene
->zsbuf
.layer_stride
;
339 * Run the shader on all blocks in a tile. This is used when a tile is
340 * completely contained inside a triangle.
341 * This is a bin command called during bin processing.
344 lp_rast_shade_tile(struct lp_rasterizer_task
*task
,
345 const union lp_rast_cmd_arg arg
)
347 const struct lp_scene
*scene
= task
->scene
;
348 const struct lp_rast_shader_inputs
*inputs
= arg
.shade_tile
;
349 const struct lp_rast_state
*state
;
350 struct lp_fragment_shader_variant
*variant
;
351 const unsigned tile_x
= task
->x
, tile_y
= task
->y
;
354 if (inputs
->disable
) {
355 /* This command was partially binned and has been disabled */
359 LP_DBG(DEBUG_RAST
, "%s\n", __FUNCTION__
);
366 variant
= state
->variant
;
368 /* render the whole 64x64 tile in 4x4 chunks */
369 for (y
= 0; y
< task
->height
; y
+= 4){
370 for (x
= 0; x
< task
->width
; x
+= 4) {
371 uint8_t *color
[PIPE_MAX_COLOR_BUFS
];
372 unsigned stride
[PIPE_MAX_COLOR_BUFS
];
373 uint8_t *depth
= NULL
;
374 unsigned depth_stride
= 0;
378 for (i
= 0; i
< scene
->fb
.nr_cbufs
; i
++){
379 stride
[i
] = scene
->cbufs
[i
].stride
;
380 color
[i
] = lp_rast_get_unswizzled_color_block_pointer(task
, i
, tile_x
+ x
,
381 tile_y
+ y
, inputs
->layer
);
385 if (scene
->zsbuf
.map
) {
386 depth
= lp_rast_get_unswizzled_depth_block_pointer(task
, tile_x
+ x
,
387 tile_y
+ y
, inputs
->layer
);
388 depth_stride
= scene
->zsbuf
.stride
;
391 /* Propagate non-interpolated raster state. */
392 task
->thread_data
.raster_state
.viewport_index
= inputs
->viewport_index
;
394 /* run shader on 4x4 block */
395 BEGIN_JIT_CALL(state
, task
);
396 variant
->jit_function
[RAST_WHOLE
]( &state
->jit_context
,
397 tile_x
+ x
, tile_y
+ y
,
415 * Run the shader on all blocks in a tile. This is used when a tile is
416 * completely contained inside a triangle, and the shader is opaque.
417 * This is a bin command called during bin processing.
420 lp_rast_shade_tile_opaque(struct lp_rasterizer_task
*task
,
421 const union lp_rast_cmd_arg arg
)
423 LP_DBG(DEBUG_RAST
, "%s\n", __FUNCTION__
);
430 lp_rast_shade_tile(task
, arg
);
435 * Compute shading for a 4x4 block of pixels inside a triangle.
436 * This is a bin command called during bin processing.
437 * \param x X position of quad in window coords
438 * \param y Y position of quad in window coords
441 lp_rast_shade_quads_mask(struct lp_rasterizer_task
*task
,
442 const struct lp_rast_shader_inputs
*inputs
,
443 unsigned x
, unsigned y
,
446 const struct lp_rast_state
*state
= task
->state
;
447 struct lp_fragment_shader_variant
*variant
= state
->variant
;
448 const struct lp_scene
*scene
= task
->scene
;
449 uint8_t *color
[PIPE_MAX_COLOR_BUFS
];
450 unsigned stride
[PIPE_MAX_COLOR_BUFS
];
451 uint8_t *depth
= NULL
;
452 unsigned depth_stride
= 0;
458 assert(x
< scene
->tiles_x
* TILE_SIZE
);
459 assert(y
< scene
->tiles_y
* TILE_SIZE
);
460 assert(x
% TILE_VECTOR_WIDTH
== 0);
461 assert(y
% TILE_VECTOR_HEIGHT
== 0);
463 assert((x
% 4) == 0);
464 assert((y
% 4) == 0);
467 for (i
= 0; i
< scene
->fb
.nr_cbufs
; i
++) {
468 if (scene
->fb
.cbufs
[i
]) {
469 stride
[i
] = scene
->cbufs
[i
].stride
;
470 color
[i
] = lp_rast_get_unswizzled_color_block_pointer(task
, i
, x
, y
,
480 if (scene
->zsbuf
.map
) {
481 depth_stride
= scene
->zsbuf
.stride
;
482 depth
= lp_rast_get_unswizzled_depth_block_pointer(task
, x
, y
, inputs
->layer
);
485 assert(lp_check_alignment(state
->jit_context
.u8_blend_color
, 16));
488 * The rasterizer may produce fragments outside our
489 * allocated 4x4 blocks hence need to filter them out here.
491 if ((x
% TILE_SIZE
) < task
->width
&& (y
% TILE_SIZE
) < task
->height
) {
492 /* not very accurate would need a popcount on the mask */
493 /* always count this not worth bothering? */
494 task
->ps_invocations
+= 1 * variant
->ps_inv_multiplier
;
496 /* Propagate non-interpolated raster state. */
497 task
->thread_data
.raster_state
.viewport_index
= inputs
->viewport_index
;
499 /* run shader on 4x4 block */
500 BEGIN_JIT_CALL(state
, task
);
501 variant
->jit_function
[RAST_EDGE_TEST
](&state
->jit_context
,
520 * Begin a new occlusion query.
521 * This is a bin command put in all bins.
525 lp_rast_begin_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 pq
->start
[task
->thread_index
] = task
->thread_data
.vis_counter
;
535 case PIPE_QUERY_PIPELINE_STATISTICS
:
536 pq
->start
[task
->thread_index
] = task
->ps_invocations
;
546 * End the current occlusion query.
547 * This is a bin command put in all bins.
551 lp_rast_end_query(struct lp_rasterizer_task
*task
,
552 const union lp_rast_cmd_arg arg
)
554 struct llvmpipe_query
*pq
= arg
.query_obj
;
557 case PIPE_QUERY_OCCLUSION_COUNTER
:
558 case PIPE_QUERY_OCCLUSION_PREDICATE
:
559 pq
->end
[task
->thread_index
] +=
560 task
->thread_data
.vis_counter
- pq
->start
[task
->thread_index
];
561 pq
->start
[task
->thread_index
] = 0;
563 case PIPE_QUERY_TIMESTAMP
:
564 pq
->end
[task
->thread_index
] = os_time_get_nano();
566 case PIPE_QUERY_PIPELINE_STATISTICS
:
567 pq
->end
[task
->thread_index
] +=
568 task
->ps_invocations
- pq
->start
[task
->thread_index
];
569 pq
->start
[task
->thread_index
] = 0;
579 lp_rast_set_state(struct lp_rasterizer_task
*task
,
580 const union lp_rast_cmd_arg arg
)
582 task
->state
= arg
.state
;
588 * Called when we're done writing to a color tile.
591 lp_rast_tile_end(struct lp_rasterizer_task
*task
)
595 for (i
= 0; i
< task
->scene
->num_active_queries
; ++i
) {
596 lp_rast_end_query(task
, lp_rast_arg_query(task
->scene
->active_queries
[i
]));
600 memset(task
->color_tiles
, 0, sizeof(task
->color_tiles
));
601 task
->depth_tile
= NULL
;
606 static lp_rast_cmd_func dispatch
[LP_RAST_OP_MAX
] =
609 lp_rast_clear_zstencil
,
618 lp_rast_triangle_3_4
,
619 lp_rast_triangle_3_16
,
620 lp_rast_triangle_4_16
,
622 lp_rast_shade_tile_opaque
,
626 lp_rast_triangle_32_1
,
627 lp_rast_triangle_32_2
,
628 lp_rast_triangle_32_3
,
629 lp_rast_triangle_32_4
,
630 lp_rast_triangle_32_5
,
631 lp_rast_triangle_32_6
,
632 lp_rast_triangle_32_7
,
633 lp_rast_triangle_32_8
,
634 lp_rast_triangle_32_3_4
,
635 lp_rast_triangle_32_3_16
,
636 lp_rast_triangle_32_4_16
641 do_rasterize_bin(struct lp_rasterizer_task
*task
,
642 const struct cmd_bin
*bin
,
645 const struct cmd_block
*block
;
649 lp_debug_bin(bin
, x
, y
);
651 for (block
= bin
->head
; block
; block
= block
->next
) {
652 for (k
= 0; k
< block
->count
; k
++) {
653 dispatch
[block
->cmd
[k
]]( task
, block
->arg
[k
] );
661 * Rasterize commands for a single bin.
662 * \param x, y position of the bin's tile in the framebuffer
663 * Must be called between lp_rast_begin() and lp_rast_end().
667 rasterize_bin(struct lp_rasterizer_task
*task
,
668 const struct cmd_bin
*bin
, int x
, int y
)
670 lp_rast_tile_begin( task
, bin
, x
, y
);
672 do_rasterize_bin(task
, bin
, x
, y
);
674 lp_rast_tile_end(task
);
679 if (bin
->head
->count
== 1) {
680 if (bin
->head
->cmd
[0] == LP_RAST_OP_SHADE_TILE_OPAQUE
)
681 LP_COUNT(nr_pure_shade_opaque_64
);
682 else if (bin
->head
->cmd
[0] == LP_RAST_OP_SHADE_TILE
)
683 LP_COUNT(nr_pure_shade_64
);
688 /* An empty bin is one that just loads the contents of the tile and
689 * stores them again unchanged. This typically happens when bins have
690 * been flushed for some reason in the middle of a frame, or when
691 * incremental updates are being made to a render target.
693 * Try to avoid doing pointless work in this case.
696 is_empty_bin( const struct cmd_bin
*bin
)
698 return bin
->head
== NULL
;
703 * Rasterize/execute all bins within a scene.
707 rasterize_scene(struct lp_rasterizer_task
*task
,
708 struct lp_scene
*scene
)
712 if (!task
->rast
->no_rast
&& !scene
->discard
) {
713 /* loop over scene bins, rasterize each */
719 while ((bin
= lp_scene_bin_iter_next(scene
, &i
, &j
))) {
720 if (!is_empty_bin( bin
))
721 rasterize_bin(task
, bin
, i
, j
);
728 lp_fence_signal(scene
->fence
);
736 * Called by setup module when it has something for us to render.
739 lp_rast_queue_scene( struct lp_rasterizer
*rast
,
740 struct lp_scene
*scene
)
742 LP_DBG(DEBUG_SETUP
, "%s\n", __FUNCTION__
);
744 if (rast
->num_threads
== 0) {
746 unsigned fpstate
= util_fpstate_get();
748 /* Make sure that denorms are treated like zeros. This is
749 * the behavior required by D3D10. OpenGL doesn't care.
751 util_fpstate_set_denorms_to_zero(fpstate
);
753 lp_rast_begin( rast
, scene
);
755 rasterize_scene( &rast
->tasks
[0], scene
);
759 util_fpstate_set(fpstate
);
761 rast
->curr_scene
= NULL
;
764 /* threaded rendering! */
767 lp_scene_enqueue( rast
->full_scenes
, scene
);
769 /* signal the threads that there's work to do */
770 for (i
= 0; i
< rast
->num_threads
; i
++) {
771 pipe_semaphore_signal(&rast
->tasks
[i
].work_ready
);
775 LP_DBG(DEBUG_SETUP
, "%s done \n", __FUNCTION__
);
780 lp_rast_finish( struct lp_rasterizer
*rast
)
782 if (rast
->num_threads
== 0) {
788 /* wait for work to complete */
789 for (i
= 0; i
< rast
->num_threads
; i
++) {
790 pipe_semaphore_wait(&rast
->tasks
[i
].work_done
);
797 * This is the thread's main entrypoint.
798 * It's a simple loop:
801 * 3. signal that we're done
803 static PIPE_THREAD_ROUTINE( thread_function
, init_data
)
805 struct lp_rasterizer_task
*task
= (struct lp_rasterizer_task
*) init_data
;
806 struct lp_rasterizer
*rast
= task
->rast
;
807 boolean debug
= false;
808 unsigned fpstate
= util_fpstate_get();
810 /* Make sure that denorms are treated like zeros. This is
811 * the behavior required by D3D10. OpenGL doesn't care.
813 util_fpstate_set_denorms_to_zero(fpstate
);
818 debug_printf("thread %d waiting for work\n", task
->thread_index
);
819 pipe_semaphore_wait(&task
->work_ready
);
824 if (task
->thread_index
== 0) {
826 * - get next scene to rasterize
827 * - map the framebuffer surfaces
830 lp_scene_dequeue( rast
->full_scenes
, TRUE
) );
833 /* Wait for all threads to get here so that threads[1+] don't
834 * get a null rast->curr_scene pointer.
836 pipe_barrier_wait( &rast
->barrier
);
840 debug_printf("thread %d doing work\n", task
->thread_index
);
842 rasterize_scene(task
,
845 /* wait for all threads to finish with this scene */
846 pipe_barrier_wait( &rast
->barrier
);
848 /* XXX: shouldn't be necessary:
850 if (task
->thread_index
== 0) {
854 /* signal done with work */
856 debug_printf("thread %d done working\n", task
->thread_index
);
858 pipe_semaphore_signal(&task
->work_done
);
866 * Initialize semaphores and spawn the threads.
869 create_rast_threads(struct lp_rasterizer
*rast
)
873 /* NOTE: if num_threads is zero, we won't use any threads */
874 for (i
= 0; i
< rast
->num_threads
; i
++) {
875 pipe_semaphore_init(&rast
->tasks
[i
].work_ready
, 0);
876 pipe_semaphore_init(&rast
->tasks
[i
].work_done
, 0);
877 rast
->threads
[i
] = pipe_thread_create(thread_function
,
878 (void *) &rast
->tasks
[i
]);
885 * Create new lp_rasterizer. If num_threads is zero, don't create any
886 * new threads, do rendering synchronously.
887 * \param num_threads number of rasterizer threads to create
889 struct lp_rasterizer
*
890 lp_rast_create( unsigned num_threads
)
892 struct lp_rasterizer
*rast
;
895 rast
= CALLOC_STRUCT(lp_rasterizer
);
900 rast
->full_scenes
= lp_scene_queue_create();
901 if (!rast
->full_scenes
) {
905 for (i
= 0; i
< Elements(rast
->tasks
); i
++) {
906 struct lp_rasterizer_task
*task
= &rast
->tasks
[i
];
908 task
->thread_index
= i
;
911 rast
->num_threads
= num_threads
;
913 rast
->no_rast
= debug_get_bool_option("LP_NO_RAST", FALSE
);
915 create_rast_threads(rast
);
917 /* for synchronizing rasterization threads */
918 pipe_barrier_init( &rast
->barrier
, rast
->num_threads
);
920 memset(lp_dummy_tile
, 0, sizeof lp_dummy_tile
);
933 void lp_rast_destroy( struct lp_rasterizer
*rast
)
937 /* Set exit_flag and signal each thread's work_ready semaphore.
938 * Each thread will be woken up, notice that the exit_flag is set and
939 * break out of its main loop. The thread will then exit.
941 rast
->exit_flag
= TRUE
;
942 for (i
= 0; i
< rast
->num_threads
; i
++) {
943 pipe_semaphore_signal(&rast
->tasks
[i
].work_ready
);
946 /* Wait for threads to terminate before cleaning up per-thread data */
947 for (i
= 0; i
< rast
->num_threads
; i
++) {
948 pipe_thread_wait(rast
->threads
[i
]);
951 /* Clean up per-thread data */
952 for (i
= 0; i
< rast
->num_threads
; i
++) {
953 pipe_semaphore_destroy(&rast
->tasks
[i
].work_ready
);
954 pipe_semaphore_destroy(&rast
->tasks
[i
].work_done
);
957 /* for synchronizing rasterization threads */
958 pipe_barrier_destroy( &rast
->barrier
);
960 lp_scene_queue_destroy(rast
->full_scenes
);