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 "util/u_string.h"
36#include "draw/draw_context.h"
37#include "lp_flush.h"
38#include "lp_context.h"
39#include "lp_setup.h"
40
41
42/**
43 * \param fence  if non-null, returns pointer to a fence which can be waited on
44 */
45void
46llvmpipe_flush( struct pipe_context *pipe,
47                struct pipe_fence_handle **fence,
48                const char *reason)
49{
50   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
51
52   draw_flush(llvmpipe->draw);
53
54   /* ask the setup module to flush */
55   lp_setup_flush(llvmpipe->setup, fence, reason);
56
57   /* Enable to dump BMPs of the color/depth buffers each frame */
58   if (0) {
59      static unsigned frame_no = 1;
60      char filename[256];
61      unsigned i;
62
63      for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
64         util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
65         debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
66      }
67
68      if (0) {
69         util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
70         debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
71      }
72
73      ++frame_no;
74   }
75}
76
77void
78llvmpipe_finish( struct pipe_context *pipe,
79                 const char *reason )
80{
81   struct pipe_fence_handle *fence = NULL;
82   llvmpipe_flush(pipe, &fence, reason);
83   if (fence) {
84      pipe->screen->fence_finish(pipe->screen, fence, PIPE_TIMEOUT_INFINITE);
85      pipe->screen->fence_reference(pipe->screen, &fence, NULL);
86   }
87}
88
89/**
90 * Flush context if necessary.
91 *
92 * Returns FALSE if it would have block, but do_not_block was set, TRUE
93 * otherwise.
94 *
95 * TODO: move this logic to an auxiliary library?
96 */
97boolean
98llvmpipe_flush_resource(struct pipe_context *pipe,
99                        struct pipe_resource *resource,
100                        unsigned level,
101                        int layer,
102                        boolean read_only,
103                        boolean cpu_access,
104                        boolean do_not_block,
105                        const char *reason)
106{
107   unsigned referenced;
108
109   referenced = llvmpipe_is_resource_referenced(pipe, resource, level, layer);
110
111   if ((referenced & LP_REFERENCED_FOR_WRITE) ||
112       ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
113
114      if (cpu_access) {
115         /*
116          * Flush and wait.
117          */
118         if (do_not_block)
119            return FALSE;
120
121         llvmpipe_finish(pipe, reason);
122      } else {
123         /*
124          * Just flush.
125          */
126
127         llvmpipe_flush(pipe, NULL, reason);
128      }
129   }
130
131   return TRUE;
132}
133