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      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
103void
104softpipe_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 */
119boolean
120softpipe_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