sp_flush.c revision 0a14e9f09fc1cf9d5c277bb239f349203d3bed79 
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
44void
45softpipe_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      for (i = 0; i < softpipe->num_fragment_sampler_views; i++) {
56         sp_flush_tex_tile_cache(softpipe->tex_cache[PIPE_SHADER_FRAGMENT][i]);
57      }
58      for (i = 0; i < softpipe->num_vertex_sampler_views; i++) {
59         sp_flush_tex_tile_cache(softpipe->tex_cache[PIPE_SHADER_VERTEX][i]);
60      }
61      for (i = 0; i < softpipe->num_geometry_sampler_views; i++) {
62         sp_flush_tex_tile_cache(softpipe->tex_cache[PIPE_SHADER_GEOMETRY][i]);
63      }
64   }
65
66   /* If this is a swapbuffers, just flush color buffers.
67    *
68    * The zbuffer changes are not discarded, but held in the cache
69    * in the hope that a later clear will wipe them out.
70    */
71   for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
72      if (softpipe->cbuf_cache[i])
73         sp_flush_tile_cache(softpipe->cbuf_cache[i]);
74
75   if (softpipe->zsbuf_cache)
76      sp_flush_tile_cache(softpipe->zsbuf_cache);
77
78   softpipe->dirty_render_cache = FALSE;
79
80   /* Need this call for hardware buffers before swapbuffers.
81    *
82    * there should probably be another/different flush-type function
83    * that's called before swapbuffers because we don't always want
84    * to unmap surfaces when flushing.
85    */
86   softpipe_unmap_transfers(softpipe);
87
88   /* Enable to dump BMPs of the color/depth buffers each frame */
89#if 0
90   if(flags & PIPE_FLUSH_FRAME) {
91      static unsigned frame_no = 1;
92      static char filename[256];
93      util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
94      debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.cbufs[0]);
95      util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
96      debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.zsbuf);
97      ++frame_no;
98   }
99#endif
100
101   if (fence)
102      *fence = (void*)(intptr_t)1;
103}
104
105void
106softpipe_flush_wrapped( struct pipe_context *pipe,
107                        struct pipe_fence_handle **fence )
108{
109   softpipe_flush(pipe, SP_FLUSH_TEXTURE_CACHE, fence);
110}
111
112
113/**
114 * Flush context if necessary.
115 *
116 * Returns FALSE if it would have block, but do_not_block was set, TRUE
117 * otherwise.
118 *
119 * TODO: move this logic to an auxiliary library?
120 */
121boolean
122softpipe_flush_resource(struct pipe_context *pipe,
123                        struct pipe_resource *texture,
124                        unsigned level,
125                        int layer,
126                        unsigned flush_flags,
127                        boolean read_only,
128                        boolean cpu_access,
129                        boolean do_not_block)
130{
131   unsigned referenced;
132
133   referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);
134
135   if ((referenced & SP_REFERENCED_FOR_WRITE) ||
136       ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {
137
138      /*
139       * TODO: The semantics of these flush flags are too obtuse. They should
140       * disappear and the pipe driver should just ensure that all visible
141       * side-effects happen when they need to happen.
142       */
143      if (referenced & SP_REFERENCED_FOR_READ)
144         flush_flags |= SP_FLUSH_TEXTURE_CACHE;
145
146      if (cpu_access) {
147         /*
148          * Flush and wait.
149          */
150
151         struct pipe_fence_handle *fence = NULL;
152
153         if (do_not_block)
154            return FALSE;
155
156         softpipe_flush(pipe, flush_flags, &fence);
157
158         if (fence) {
159            /*
160             * This is for illustrative purposes only, as softpipe does not
161             * have fences.
162             */
163            pipe->screen->fence_finish(pipe->screen, fence,
164                                       PIPE_TIMEOUT_INFINITE);
165            pipe->screen->fence_reference(pipe->screen, &fence, NULL);
166         }
167      } else {
168         /*
169          * Just flush.
170          */
171
172         softpipe_flush(pipe, flush_flags, NULL);
173      }
174   }
175
176   return TRUE;
177}
178