sp_flush.c revision 53e94bd4adb218c5974c522389c3bcf40f3fa7e8 
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 "draw/draw_context.h"
35#include "sp_flush.h"
36#include "sp_context.h"
37#include "sp_state.h"
38#include "sp_tile_cache.h"
39#include "sp_tex_tile_cache.h"
40
41
42void
43softpipe_flush( struct pipe_context *pipe,
44		unsigned flags,
45                struct pipe_fence_handle **fence )
46{
47   struct softpipe_context *softpipe = softpipe_context(pipe);
48   uint i;
49
50   draw_flush(softpipe->draw);
51
52   if (flags & PIPE_FLUSH_TEXTURE_CACHE) {
53      for (i = 0; i < softpipe->num_sampler_views; i++) {
54         sp_flush_tex_tile_cache(softpipe->tex_cache[i]);
55      }
56      for (i = 0; i < softpipe->num_vertex_sampler_views; i++) {
57         sp_flush_tex_tile_cache(softpipe->vertex_tex_cache[i]);
58      }
59   }
60
61   if (flags & PIPE_FLUSH_SWAPBUFFERS) {
62      /* If this is a swapbuffers, just flush color buffers.
63       *
64       * The zbuffer changes are not discarded, but held in the cache
65       * in the hope that a later clear will wipe them out.
66       */
67      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
68         if (softpipe->cbuf_cache[i])
69            sp_flush_tile_cache(softpipe->cbuf_cache[i]);
70
71      /* Need this call for hardware buffers before swapbuffers.
72       *
73       * there should probably be another/different flush-type function
74       * that's called before swapbuffers because we don't always want
75       * to unmap surfaces when flushing.
76       */
77      softpipe_unmap_transfers(softpipe);
78   }
79   else if (flags & PIPE_FLUSH_RENDER_CACHE) {
80      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
81         if (softpipe->cbuf_cache[i])
82            sp_flush_tile_cache(softpipe->cbuf_cache[i]);
83
84      if (softpipe->zsbuf_cache)
85         sp_flush_tile_cache(softpipe->zsbuf_cache);
86
87      softpipe->dirty_render_cache = FALSE;
88   }
89
90   /* Enable to dump BMPs of the color/depth buffers each frame */
91#if 0
92   if(flags & PIPE_FLUSH_FRAME) {
93      static unsigned frame_no = 1;
94      static char filename[256];
95      util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
96      debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.cbufs[0]);
97      util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
98      debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.zsbuf);
99      ++frame_no;
100   }
101#endif
102
103   if (fence)
104      *fence = NULL;
105}
106
107
108/**
109 * Flush context if necessary.
110 *
111 * Returns FALSE if it would have block, but do_not_block was set, TRUE
112 * otherwise.
113 *
114 * TODO: move this logic to an auxiliary library?
115 */
116boolean
117softpipe_flush_resource(struct pipe_context *pipe,
118                        struct pipe_resource *texture,
119                        unsigned face,
120                        unsigned level,
121                        unsigned flush_flags,
122                        boolean read_only,
123                        boolean cpu_access,
124                        boolean do_not_block)
125{
126   unsigned referenced;
127
128   referenced = pipe->is_resource_referenced(pipe, texture, face, level);
129
130   if ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
131       ((referenced & PIPE_REFERENCED_FOR_READ) && !read_only)) {
132
133      /*
134       * TODO: The semantics of these flush flags are too obtuse. They should
135       * disappear and the pipe driver should just ensure that all visible
136       * side-effects happen when they need to happen.
137       */
138      if (referenced & PIPE_REFERENCED_FOR_WRITE)
139         flush_flags |= PIPE_FLUSH_RENDER_CACHE;
140
141      if (referenced & PIPE_REFERENCED_FOR_READ)
142         flush_flags |= PIPE_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         pipe->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, 0);
162            pipe->screen->fence_reference(pipe->screen, &fence, NULL);
163         }
164      } else {
165         /*
166          * Just flush.
167          */
168
169         pipe->flush(pipe, flush_flags, NULL);
170      }
171   }
172
173   return TRUE;
174}
175