sp_flush.c revision 848b8605 
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 "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#include "util/u_string.h"
43
44
45void
46softpipe_flush( struct pipe_context *pipe,
47                unsigned flags,
48                struct pipe_fence_handle **fence )
49{
50   struct softpipe_context *softpipe = softpipe_context(pipe);
51   uint i;
52
53   draw_flush(softpipe->draw);
54
55   if (flags & SP_FLUSH_TEXTURE_CACHE) {
56      unsigned sh;
57
58      for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {
59         for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {
60            sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);
61         }
62      }
63   }
64
65   /* If this is a swapbuffers, just flush color buffers.
66    *
67    * The zbuffer changes are not discarded, but held in the cache
68    * in the hope that a later clear will wipe them out.
69    */
70   for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
71      if (softpipe->cbuf_cache[i])
72         sp_flush_tile_cache(softpipe->cbuf_cache[i]);
73
74   if (softpipe->zsbuf_cache)
75      sp_flush_tile_cache(softpipe->zsbuf_cache);
76
77   softpipe->dirty_render_cache = FALSE;
78
79   /* Enable to dump BMPs of the color/depth buffers each frame */
80#if 0
81   if (flags & PIPE_FLUSH_END_OF_FRAME) {
82      static unsigned frame_no = 1;
83      static char filename[256];
84      util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
85      debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.cbufs[0]);
86      util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
87      debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.zsbuf);
88      ++frame_no;
89   }
90#endif
91
92   if (fence)
93      *fence = (void*)(intptr_t)1;
94}
95
96void
97softpipe_flush_wrapped(struct pipe_context *pipe,
98                       struct pipe_fence_handle **fence,
99                       unsigned flags)
100{
101   softpipe_flush(pipe, SP_FLUSH_TEXTURE_CACHE, fence);
102}
103
104
105/**
106 * Flush context if necessary.
107 *
108 * Returns FALSE if it would have block, but do_not_block was set, TRUE
109 * otherwise.
110 *
111 * TODO: move this logic to an auxiliary library?
112 */
113boolean
114softpipe_flush_resource(struct pipe_context *pipe,
115                        struct pipe_resource *texture,
116                        unsigned level,
117                        int layer,
118                        unsigned flush_flags,
119                        boolean read_only,
120                        boolean cpu_access,
121                        boolean do_not_block)
122{
123   unsigned referenced;
124
125   referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);
126
127   if ((referenced & SP_REFERENCED_FOR_WRITE) ||
128       ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {
129
130      /*
131       * TODO: The semantics of these flush flags are too obtuse. They should
132       * disappear and the pipe driver should just ensure that all visible
133       * side-effects happen when they need to happen.
134       */
135      if (referenced & SP_REFERENCED_FOR_READ)
136         flush_flags |= SP_FLUSH_TEXTURE_CACHE;
137
138      if (cpu_access) {
139         /*
140          * Flush and wait.
141          */
142
143         struct pipe_fence_handle *fence = NULL;
144
145         if (do_not_block)
146            return FALSE;
147
148         softpipe_flush(pipe, flush_flags, &fence);
149
150         if (fence) {
151            /*
152             * This is for illustrative purposes only, as softpipe does not
153             * have fences.
154             */
155            pipe->screen->fence_finish(pipe->screen, fence,
156                                       PIPE_TIMEOUT_INFINITE);
157            pipe->screen->fence_reference(pipe->screen, &fence, NULL);
158         }
159      } else {
160         /*
161          * Just flush.
162          */
163
164         softpipe_flush(pipe, flush_flags, NULL);
165      }
166   }
167
168   return TRUE;
169}
170