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#include "lp_fence.h"
42#include "lp_screen.h"
43#include "lp_rast.h"
44
45/**
46 * \param fence  if non-null, returns pointer to a fence which can be waited on
47 */
48void
49llvmpipe_flush( struct pipe_context *pipe,
50                struct pipe_fence_handle **fence,
51                const char *reason)
52{
53   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
54   struct llvmpipe_screen *screen = llvmpipe_screen(pipe->screen);
55   draw_flush(llvmpipe->draw);
56
57   /* ask the setup module to flush */
58   lp_setup_flush(llvmpipe->setup, reason);
59
60   mtx_lock(&screen->rast_mutex);
61   lp_rast_fence(screen->rast, (struct lp_fence **)fence);
62   mtx_unlock(&screen->rast_mutex);
63   if (fence && (!*fence))
64      *fence = (struct pipe_fence_handle *)lp_fence_create(0);
65
66   /* Enable to dump BMPs of the color/depth buffers each frame */
67   if (0) {
68      static unsigned frame_no = 1;
69      char filename[256];
70      unsigned i;
71
72      for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
73         snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
74         debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
75      }
76
77      if (0) {
78         snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
79         debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
80      }
81
82      ++frame_no;
83   }
84}
85
86void
87llvmpipe_finish( struct pipe_context *pipe,
88                 const char *reason )
89{
90   struct pipe_fence_handle *fence = NULL;
91   llvmpipe_flush(pipe, &fence, reason);
92   if (fence) {
93      pipe->screen->fence_finish(pipe->screen, NULL, fence,
94                                 PIPE_TIMEOUT_INFINITE);
95      pipe->screen->fence_reference(pipe->screen, &fence, NULL);
96   }
97}
98
99/**
100 * Flush context if necessary.
101 *
102 * Returns FALSE if it would have block, but do_not_block was set, TRUE
103 * otherwise.
104 *
105 * TODO: move this logic to an auxiliary library?
106 */
107boolean
108llvmpipe_flush_resource(struct pipe_context *pipe,
109                        struct pipe_resource *resource,
110                        unsigned level,
111                        boolean read_only,
112                        boolean cpu_access,
113                        boolean do_not_block,
114                        const char *reason)
115{
116   unsigned referenced = 0;
117   struct llvmpipe_screen *lp_screen = llvmpipe_screen(pipe->screen);
118   mtx_lock(&lp_screen->ctx_mutex);
119   list_for_each_entry(struct llvmpipe_context, ctx, &lp_screen->ctx_list, list)
120      referenced |= llvmpipe_is_resource_referenced((struct pipe_context *)ctx, resource, level);
121   mtx_unlock(&lp_screen->ctx_mutex);
122   if ((referenced & LP_REFERENCED_FOR_WRITE) ||
123       ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
124
125      if (cpu_access)
126	if (do_not_block)
127	  return FALSE;
128      /*
129       * Flush and wait.
130       * Finish so VS can use FS results.
131       */
132      llvmpipe_finish(pipe, reason);
133   }
134
135   return TRUE;
136}
137