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 "draw/draw_context.h"
36 #include "sp_flush.h"
37 #include "sp_context.h"
38 #include "sp_state.h"
39 #include "sp_tile_cache.h"
40 #include "sp_tex_tile_cache.h"
41 #include "util/u_memory.h"
42
43
44 void
softpipe_flush(struct pipe_context * pipe,unsigned flags,struct pipe_fence_handle ** fence)45 softpipe_flush( struct pipe_context *pipe,
46 unsigned flags,
47 struct pipe_fence_handle **fence )
48 {
49 struct softpipe_context *softpipe = softpipe_context(pipe);
50 uint i;
51
52 draw_flush(softpipe->draw);
53
54 if (flags & SP_FLUSH_TEXTURE_CACHE) {
55 unsigned sh;
56
57 for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {
58 for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {
59 sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);
60 }
61 }
62 }
63
64 /* If this is a swapbuffers, just flush color buffers.
65 *
66 * The zbuffer changes are not discarded, but held in the cache
67 * in the hope that a later clear will wipe them out.
68 */
69 for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
70 if (softpipe->cbuf_cache[i])
71 sp_flush_tile_cache(softpipe->cbuf_cache[i]);
72
73 if (softpipe->zsbuf_cache)
74 sp_flush_tile_cache(softpipe->zsbuf_cache);
75
76 softpipe->dirty_render_cache = FALSE;
77
78 /* Need this call for hardware buffers before swapbuffers.
79 *
80 * there should probably be another/different flush-type function
81 * that's called before swapbuffers because we don't always want
82 * to unmap surfaces when flushing.
83 */
84 softpipe_unmap_transfers(softpipe);
85
86 /* Enable to dump BMPs of the color/depth buffers each frame */
87 #if 0
88 if(flags & PIPE_FLUSH_FRAME) {
89 static unsigned frame_no = 1;
90 static char filename[256];
91 util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
92 debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.cbufs[0]);
93 util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
94 debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.zsbuf);
95 ++frame_no;
96 }
97 #endif
98
99 if (fence)
100 *fence = (void*)(intptr_t)1;
101 }
102
103 void
softpipe_flush_wrapped(struct pipe_context * pipe,struct pipe_fence_handle ** fence)104 softpipe_flush_wrapped( struct pipe_context *pipe,
105 struct pipe_fence_handle **fence )
106 {
107 softpipe_flush(pipe, SP_FLUSH_TEXTURE_CACHE, fence);
108 }
109
110
111 /**
112 * Flush context if necessary.
113 *
114 * Returns FALSE if it would have block, but do_not_block was set, TRUE
115 * otherwise.
116 *
117 * TODO: move this logic to an auxiliary library?
118 */
119 boolean
softpipe_flush_resource(struct pipe_context * pipe,struct pipe_resource * texture,unsigned level,int layer,unsigned flush_flags,boolean read_only,boolean cpu_access,boolean do_not_block)120 softpipe_flush_resource(struct pipe_context *pipe,
121 struct pipe_resource *texture,
122 unsigned level,
123 int layer,
124 unsigned flush_flags,
125 boolean read_only,
126 boolean cpu_access,
127 boolean do_not_block)
128 {
129 unsigned referenced;
130
131 referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);
132
133 if ((referenced & SP_REFERENCED_FOR_WRITE) ||
134 ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {
135
136 /*
137 * TODO: The semantics of these flush flags are too obtuse. They should
138 * disappear and the pipe driver should just ensure that all visible
139 * side-effects happen when they need to happen.
140 */
141 if (referenced & SP_REFERENCED_FOR_READ)
142 flush_flags |= SP_FLUSH_TEXTURE_CACHE;
143
144 if (cpu_access) {
145 /*
146 * Flush and wait.
147 */
148
149 struct pipe_fence_handle *fence = NULL;
150
151 if (do_not_block)
152 return FALSE;
153
154 softpipe_flush(pipe, flush_flags, &fence);
155
156 if (fence) {
157 /*
158 * This is for illustrative purposes only, as softpipe does not
159 * have fences.
160 */
161 pipe->screen->fence_finish(pipe->screen, fence,
162 PIPE_TIMEOUT_INFINITE);
163 pipe->screen->fence_reference(pipe->screen, &fence, NULL);
164 }
165 } else {
166 /*
167 * Just flush.
168 */
169
170 softpipe_flush(pipe, flush_flags, NULL);
171 }
172 }
173
174 return TRUE;
175 }
176