1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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.
25 *
26 **************************************************************************/
27
28 /* Author:
29 * Keith Whitwell <[email protected]>
30 */
31
32
33 #include "pipe/p_defines.h"
34 #include "pipe/p_screen.h"
35 #include "util/u_debug_image.h"
36 #include "util/u_string.h"
37 #include "draw/draw_context.h"
38 #include "lp_flush.h"
39 #include "lp_context.h"
40 #include "lp_setup.h"
41 #include "lp_fence.h"
42 #include "lp_screen.h"
43 #include "lp_rast.h"
44
45
46 /**
47 * \param fence if non-null, returns pointer to a fence which can be waited on
48 */
49 void
llvmpipe_flush(struct pipe_context * pipe,struct pipe_fence_handle ** fence,const char * reason)50 llvmpipe_flush(struct pipe_context *pipe,
51 struct pipe_fence_handle **fence,
52 const char *reason)
53 {
54 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
55 struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
56
57 draw_flush(llvmpipe->draw);
58
59 /* ask the setup module to flush */
60 lp_setup_flush(llvmpipe->setup, reason);
61
62 mtx_lock(&screen->rast_mutex);
63 lp_rast_fence(screen->rast, (struct lp_fence **)fence);
64 mtx_unlock(&screen->rast_mutex);
65
66 if (fence && (!*fence))
67 *fence = (struct pipe_fence_handle *)lp_fence_create(0);
68
69 llvmpipe_clear_sample_functions_cache(llvmpipe, fence);
70
71 /* Enable to dump BMPs of the color/depth buffers each frame */
72 if (0) {
73 static unsigned frame_no = 1;
74 char filename[256];
75 unsigned i;
76
77 for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
78 snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
79 debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
80 }
81
82 if (0) {
83 snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
84 debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
85 }
86
87 ++frame_no;
88 }
89 }
90
91
92 void
llvmpipe_finish(struct pipe_context * pipe,const char * reason)93 llvmpipe_finish(struct pipe_context *pipe,
94 const char *reason)
95 {
96 struct pipe_fence_handle *fence = NULL;
97 llvmpipe_flush(pipe, &fence, reason);
98 if (fence) {
99 pipe->screen->fence_finish(pipe->screen, NULL, fence,
100 OS_TIMEOUT_INFINITE);
101 pipe->screen->fence_reference(pipe->screen, &fence, NULL);
102 }
103 }
104
105
106 /**
107 * Flush context if necessary.
108 *
109 * Returns FALSE if it would have block, but do_not_block was set, TRUE
110 * otherwise.
111 *
112 * TODO: move this logic to an auxiliary library?
113 */
114 bool
llvmpipe_flush_resource(struct pipe_context * pipe,struct pipe_resource * resource,unsigned level,bool read_only,bool cpu_access,bool do_not_block,const char * reason)115 llvmpipe_flush_resource(struct pipe_context *pipe,
116 struct pipe_resource *resource,
117 unsigned level,
118 bool read_only,
119 bool cpu_access,
120 bool do_not_block,
121 const char *reason)
122 {
123 unsigned referenced = 0;
124 struct llvmpipe_screen *lp_screen = llvmpipe_screen(pipe->screen);
125
126 mtx_lock(&lp_screen->ctx_mutex);
127 list_for_each_entry(struct llvmpipe_context, ctx, &lp_screen->ctx_list, list) {
128 referenced |=
129 llvmpipe_is_resource_referenced((struct pipe_context *)ctx,
130 resource, level);
131 }
132 mtx_unlock(&lp_screen->ctx_mutex);
133
134 if ((referenced & LP_REFERENCED_FOR_WRITE) ||
135 ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
136
137 if (cpu_access)
138 if (do_not_block)
139 return false;
140
141 /*
142 * Flush and wait.
143 * Finish so VS can use FS results.
144 */
145 llvmpipe_finish(pipe, reason);
146 }
147
148 return true;
149 }
150