sp_flush.c revision bfe88e69988b3d3bdff0b9f6051d0428e1315653 
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
42
43void
44softpipe_flush( struct pipe_context *pipe,
45		unsigned flags,
46                struct pipe_fence_handle **fence )
47{
48   struct softpipe_context *softpipe = softpipe_context(pipe);
49   uint i;
50
51   draw_flush(softpipe->draw);
52
53   if (flags & PIPE_FLUSH_TEXTURE_CACHE) {
54      for (i = 0; i < softpipe->num_fragment_sampler_views; i++) {
55         sp_flush_tex_tile_cache(softpipe->fragment_tex_cache[i]);
56      }
57      for (i = 0; i < softpipe->num_vertex_sampler_views; i++) {
58         sp_flush_tex_tile_cache(softpipe->vertex_tex_cache[i]);
59      }
60      for (i = 0; i < softpipe->num_geometry_sampler_views; i++) {
61         sp_flush_tex_tile_cache(softpipe->geometry_tex_cache[i]);
62      }
63   }
64
65   if (flags & PIPE_FLUSH_SWAPBUFFERS) {
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      /* Need this call for hardware buffers before swapbuffers.
76       *
77       * there should probably be another/different flush-type function
78       * that's called before swapbuffers because we don't always want
79       * to unmap surfaces when flushing.
80       */
81      softpipe_unmap_transfers(softpipe);
82   }
83   else if (flags & PIPE_FLUSH_RENDER_CACHE) {
84      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
85         if (softpipe->cbuf_cache[i])
86            sp_flush_tile_cache(softpipe->cbuf_cache[i]);
87
88      if (softpipe->zsbuf_cache)
89         sp_flush_tile_cache(softpipe->zsbuf_cache);
90
91      softpipe->dirty_render_cache = FALSE;
92   }
93
94   /* Enable to dump BMPs of the color/depth buffers each frame */
95#if 0
96   if(flags & PIPE_FLUSH_FRAME) {
97      static unsigned frame_no = 1;
98      static char filename[256];
99      util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
100      debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.cbufs[0]);
101      util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
102      debug_dump_surface_bmp(softpipe, filename, softpipe->framebuffer.zsbuf);
103      ++frame_no;
104   }
105#endif
106
107   if (fence)
108      *fence = NULL;
109}
110
111
112/**
113 * Flush context if necessary.
114 *
115 * Returns FALSE if it would have block, but do_not_block was set, TRUE
116 * otherwise.
117 *
118 * TODO: move this logic to an auxiliary library?
119 */
120boolean
121softpipe_flush_resource(struct pipe_context *pipe,
122                        struct pipe_resource *texture,
123                        unsigned level,
124                        int layer,
125                        unsigned flush_flags,
126                        boolean read_only,
127                        boolean cpu_access,
128                        boolean do_not_block)
129{
130   unsigned referenced;
131
132   referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);
133
134   if ((referenced & SP_REFERENCED_FOR_WRITE) ||
135       ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {
136
137      /*
138       * TODO: The semantics of these flush flags are too obtuse. They should
139       * disappear and the pipe driver should just ensure that all visible
140       * side-effects happen when they need to happen.
141       */
142      if (referenced & SP_REFERENCED_FOR_WRITE)
143         flush_flags |= PIPE_FLUSH_RENDER_CACHE;
144
145      if (referenced & SP_REFERENCED_FOR_READ)
146         flush_flags |= PIPE_FLUSH_TEXTURE_CACHE;
147
148      if (cpu_access) {
149         /*
150          * Flush and wait.
151          */
152
153         struct pipe_fence_handle *fence = NULL;
154
155         if (do_not_block)
156            return FALSE;
157
158         pipe->flush(pipe, flush_flags, &fence);
159
160         if (fence) {
161            /*
162             * This is for illustrative purposes only, as softpipe does not
163             * have fences.
164             */
165            pipe->screen->fence_finish(pipe->screen, fence,
166                                       PIPE_TIMEOUT_INFINITE);
167            pipe->screen->fence_reference(pipe->screen, &fence, NULL);
168         }
169      } else {
170         /*
171          * Just flush.
172          */
173
174         pipe->flush(pipe, flush_flags, NULL);
175      }
176   }
177
178   return TRUE;
179}
180