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_debug_image.h"
42#include "util/u_memory.h"
43#include "util/u_string.h"
44
45
46void
47softpipe_flush( struct pipe_context *pipe,
48                unsigned flags,
49                struct pipe_fence_handle **fence )
50{
51   struct softpipe_context *softpipe = softpipe_context(pipe);
52   uint i;
53
54   draw_flush(softpipe->draw);
55
56   if (flags & SP_FLUSH_TEXTURE_CACHE) {
57      unsigned sh;
58
59      for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
60         for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {
61            sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);
62         }
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   /* Enable to dump BMPs of the color/depth buffers each frame */
81#if 0
82   if (flags & PIPE_FLUSH_END_OF_FRAME) {
83      static unsigned frame_no = 1;
84      static char filename[256];
85      snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
86      debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.cbufs[0]);
87      snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
88      debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.zsbuf);
89      ++frame_no;
90   }
91#endif
92
93   if (fence)
94      *fence = (void*)(intptr_t)1;
95}
96
97void
98softpipe_flush_wrapped(struct pipe_context *pipe,
99                       struct pipe_fence_handle **fence,
100                       unsigned flags)
101{
102   softpipe_flush(pipe, SP_FLUSH_TEXTURE_CACHE, fence);
103}
104
105
106/**
107 * Flush context if necessary.
108 *
109 * Returns FALSE if it would have block, but do_not_block was set, TRUE
110 * otherwise.
111 *
112 * TODO: move this logic to an auxiliary library?
113 */
114boolean
115softpipe_flush_resource(struct pipe_context *pipe,
116                        struct pipe_resource *texture,
117                        unsigned level,
118                        int layer,
119                        unsigned flush_flags,
120                        boolean read_only,
121                        boolean cpu_access,
122                        boolean do_not_block)
123{
124   unsigned referenced;
125
126   referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);
127
128   if ((referenced & SP_REFERENCED_FOR_WRITE) ||
129       ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {
130
131      /*
132       * TODO: The semantics of these flush flags are too obtuse. They should
133       * disappear and the pipe driver should just ensure that all visible
134       * side-effects happen when they need to happen.
135       */
136      if (referenced & SP_REFERENCED_FOR_READ)
137         flush_flags |= SP_FLUSH_TEXTURE_CACHE;
138
139      if (cpu_access) {
140         /*
141          * Flush and wait.
142          */
143
144         struct pipe_fence_handle *fence = NULL;
145
146         if (do_not_block)
147            return FALSE;
148
149         softpipe_flush(pipe, flush_flags, &fence);
150
151         if (fence) {
152            /*
153             * This is for illustrative purposes only, as softpipe does not
154             * have fences.
155             */
156            pipe->screen->fence_finish(pipe->screen, NULL, fence,
157                                       PIPE_TIMEOUT_INFINITE);
158            pipe->screen->fence_reference(pipe->screen, &fence, NULL);
159         }
160      } else {
161         /*
162          * Just flush.
163          */
164
165         softpipe_flush(pipe, flush_flags, NULL);
166      }
167   }
168
169   return TRUE;
170}
171
172void softpipe_texture_barrier(struct pipe_context *pipe, unsigned flags)
173{
174   struct softpipe_context *softpipe = softpipe_context(pipe);
175   uint i, sh;
176
177   for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
178      for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {
179         sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);
180      }
181   }
182
183   for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
184      if (softpipe->cbuf_cache[i])
185         sp_flush_tile_cache(softpipe->cbuf_cache[i]);
186
187   if (softpipe->zsbuf_cache)
188      sp_flush_tile_cache(softpipe->zsbuf_cache);
189
190   softpipe->dirty_render_cache = FALSE;
191}
192
193void softpipe_memory_barrier(struct pipe_context *pipe, unsigned flags)
194{
195   if (!(flags & ~PIPE_BARRIER_UPDATE))
196      return;
197
198   softpipe_texture_barrier(pipe, 0);
199}
200