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 <keithw@vmware.com>
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 * \param fence if non-null, returns pointer to a fence which can be waited on
47 */
48 void
llvmpipe_flush(struct pipe_context * pipe,struct pipe_fence_handle ** fence,const char * reason)49 llvmpipe_flush( struct pipe_context *pipe,
50 struct pipe_fence_handle **fence,
51 const char *reason)
52 {
53 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
54 struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
55 draw_flush(llvmpipe->draw);
56
57 /* ask the setup module to flush */
58 lp_setup_flush(llvmpipe->setup, reason);
59
60 mtx_lock(&screen->rast_mutex);
61 lp_rast_fence(screen->rast, (struct lp_fence **)fence);
62 mtx_unlock(&screen->rast_mutex);
63 if (fence && (!*fence))
64 *fence = (struct pipe_fence_handle *)lp_fence_create(0);
65
66 /* Enable to dump BMPs of the color/depth buffers each frame */
67 if (0) {
68 static unsigned frame_no = 1;
69 char filename[256];
70 unsigned i;
71
72 for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
73 snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
74 debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
75 }
76
77 if (0) {
78 snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
79 debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
80 }
81
82 ++frame_no;
83 }
84 }
85
86 void
llvmpipe_finish(struct pipe_context * pipe,const char * reason)87 llvmpipe_finish( struct pipe_context *pipe,
88 const char *reason )
89 {
90 struct pipe_fence_handle *fence = NULL;
91 llvmpipe_flush(pipe, &fence, reason);
92 if (fence) {
93 pipe->screen->fence_finish(pipe->screen, NULL, fence,
94 PIPE_TIMEOUT_INFINITE);
95 pipe->screen->fence_reference(pipe->screen, &fence, NULL);
96 }
97 }
98
99 /**
100 * Flush context if necessary.
101 *
102 * Returns FALSE if it would have block, but do_not_block was set, TRUE
103 * otherwise.
104 *
105 * TODO: move this logic to an auxiliary library?
106 */
107 boolean
llvmpipe_flush_resource(struct pipe_context * pipe,struct pipe_resource * resource,unsigned level,boolean read_only,boolean cpu_access,boolean do_not_block,const char * reason)108 llvmpipe_flush_resource(struct pipe_context *pipe,
109 struct pipe_resource *resource,
110 unsigned level,
111 boolean read_only,
112 boolean cpu_access,
113 boolean do_not_block,
114 const char *reason)
115 {
116 unsigned referenced = 0;
117 struct llvmpipe_screen *lp_screen = llvmpipe_screen(pipe->screen);
118 mtx_lock(&lp_screen->ctx_mutex);
119 list_for_each_entry(struct llvmpipe_context, ctx, &lp_screen->ctx_list, list)
120 referenced |= llvmpipe_is_resource_referenced((struct pipe_context *)ctx, resource, level);
121 mtx_unlock(&lp_screen->ctx_mutex);
122 if ((referenced & LP_REFERENCED_FOR_WRITE) ||
123 ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
124
125 if (cpu_access)
126 if (do_not_block)
127 return FALSE;
128 /*
129 * Flush and wait.
130 * Finish so VS can use FS results.
131 */
132 llvmpipe_finish(pipe, reason);
133 }
134
135 return TRUE;
136 }
137