1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 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.
25 *
26 **************************************************************************/
27
28 /* Author:
29 * Keith Whitwell <keith@tungstengraphics.com>
30 */
31
32
33 #include "pipe/p_defines.h"
34 #include "pipe/p_screen.h"
35 #include "util/u_string.h"
36 #include "draw/draw_context.h"
37 #include "lp_flush.h"
38 #include "lp_context.h"
39 #include "lp_setup.h"
40
41
42 /**
43 * \param fence if non-null, returns pointer to a fence which can be waited on
44 */
45 void
llvmpipe_flush(struct pipe_context * pipe,struct pipe_fence_handle ** fence,const char * reason)46 llvmpipe_flush( struct pipe_context *pipe,
47 struct pipe_fence_handle **fence,
48 const char *reason)
49 {
50 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
51
52 draw_flush(llvmpipe->draw);
53
54 /* ask the setup module to flush */
55 lp_setup_flush(llvmpipe->setup, fence, reason);
56
57 /* Enable to dump BMPs of the color/depth buffers each frame */
58 if (0) {
59 static unsigned frame_no = 1;
60 char filename[256];
61 unsigned i;
62
63 for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
64 util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
65 debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
66 }
67
68 if (0) {
69 util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
70 debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
71 }
72
73 ++frame_no;
74 }
75 }
76
77 void
llvmpipe_finish(struct pipe_context * pipe,const char * reason)78 llvmpipe_finish( struct pipe_context *pipe,
79 const char *reason )
80 {
81 struct pipe_fence_handle *fence = NULL;
82 llvmpipe_flush(pipe, &fence, reason);
83 if (fence) {
84 pipe->screen->fence_finish(pipe->screen, fence, PIPE_TIMEOUT_INFINITE);
85 pipe->screen->fence_reference(pipe->screen, &fence, NULL);
86 }
87 }
88
89 /**
90 * Flush context if necessary.
91 *
92 * Returns FALSE if it would have block, but do_not_block was set, TRUE
93 * otherwise.
94 *
95 * TODO: move this logic to an auxiliary library?
96 */
97 boolean
llvmpipe_flush_resource(struct pipe_context * pipe,struct pipe_resource * resource,unsigned level,int layer,boolean read_only,boolean cpu_access,boolean do_not_block,const char * reason)98 llvmpipe_flush_resource(struct pipe_context *pipe,
99 struct pipe_resource *resource,
100 unsigned level,
101 int layer,
102 boolean read_only,
103 boolean cpu_access,
104 boolean do_not_block,
105 const char *reason)
106 {
107 unsigned referenced;
108
109 referenced = llvmpipe_is_resource_referenced(pipe, resource, level, layer);
110
111 if ((referenced & LP_REFERENCED_FOR_WRITE) ||
112 ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
113
114 if (cpu_access) {
115 /*
116 * Flush and wait.
117 */
118 if (do_not_block)
119 return FALSE;
120
121 llvmpipe_finish(pipe, reason);
122 } else {
123 /*
124 * Just flush.
125 */
126
127 llvmpipe_flush(pipe, NULL, reason);
128 }
129 }
130
131 return TRUE;
132 }
133