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 "util/u_debug_image.h"
36#include "util/u_string.h"
37#include "draw/draw_context.h"
38#include "lp_flush.h"
39#include "lp_context.h"
40#include "lp_setup.h"
41
42
43/**
44 * \param fence  if non-null, returns pointer to a fence which can be waited on
45 */
46void
47llvmpipe_flush( struct pipe_context *pipe,
48                struct pipe_fence_handle **fence,
49                const char *reason)
50{
51   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
52
53   draw_flush(llvmpipe->draw);
54
55   /* ask the setup module to flush */
56   lp_setup_flush(llvmpipe->setup, fence, reason);
57
58   /* Enable to dump BMPs of the color/depth buffers each frame */
59   if (0) {
60      static unsigned frame_no = 1;
61      char filename[256];
62      unsigned i;
63
64      for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
65         util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
66         debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
67      }
68
69      if (0) {
70         util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
71         debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
72      }
73
74      ++frame_no;
75   }
76}
77
78void
79llvmpipe_finish( struct pipe_context *pipe,
80                 const char *reason )
81{
82   struct pipe_fence_handle *fence = NULL;
83   llvmpipe_flush(pipe, &fence, reason);
84   if (fence) {
85      pipe->screen->fence_finish(pipe->screen, NULL, fence,
86                                 PIPE_TIMEOUT_INFINITE);
87      pipe->screen->fence_reference(pipe->screen, &fence, NULL);
88   }
89}
90
91/**
92 * Flush context if necessary.
93 *
94 * Returns FALSE if it would have block, but do_not_block was set, TRUE
95 * otherwise.
96 *
97 * TODO: move this logic to an auxiliary library?
98 */
99boolean
100llvmpipe_flush_resource(struct pipe_context *pipe,
101                        struct pipe_resource *resource,
102                        unsigned level,
103                        boolean read_only,
104                        boolean cpu_access,
105                        boolean do_not_block,
106                        const char *reason)
107{
108   unsigned referenced;
109
110   referenced = llvmpipe_is_resource_referenced(pipe, resource, level);
111
112   if ((referenced & LP_REFERENCED_FOR_WRITE) ||
113       ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
114
115      if (cpu_access) {
116         /*
117          * Flush and wait.
118          */
119         if (do_not_block)
120            return FALSE;
121
122         llvmpipe_finish(pipe, reason);
123      } else {
124         /*
125          * Just flush.
126          */
127
128         llvmpipe_flush(pipe, NULL, reason);
129      }
130   }
131
132   return TRUE;
133}
134