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 /*
29  * Authors:
30  *   Keith Whitwell <keithw@vmware.com>
31  *   Brian Paul
32  */
33
34#include "main/glheader.h"
35#include "main/macros.h"
36#include "main/context.h"
37#include "st_context.h"
38#include "st_cb_bitmap.h"
39#include "st_cb_flush.h"
40#include "st_cb_clear.h"
41#include "st_cb_fbo.h"
42#include "st_context.h"
43#include "st_manager.h"
44#include "pipe/p_context.h"
45#include "pipe/p_defines.h"
46#include "pipe/p_screen.h"
47#include "util/u_gen_mipmap.h"
48
49
50void
51st_flush(struct st_context *st,
52         struct pipe_fence_handle **fence,
53         unsigned flags)
54{
55   st_flush_bitmap_cache(st);
56
57   /* We want to call this function periodically.
58    * Typically, it has nothing to do so it shouldn't be expensive.
59    */
60   st_context_free_zombie_objects(st);
61
62   st->pipe->flush(st->pipe, fence, flags);
63}
64
65
66/**
67 * Flush, and wait for completion.
68 */
69void
70st_finish(struct st_context *st)
71{
72   struct pipe_fence_handle *fence = NULL;
73
74   st_flush(st, &fence, PIPE_FLUSH_ASYNC | PIPE_FLUSH_HINT_FINISH);
75
76   if (fence) {
77      st->pipe->screen->fence_finish(st->pipe->screen, NULL, fence,
78                                     PIPE_TIMEOUT_INFINITE);
79      st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
80   }
81
82   st_manager_flush_swapbuffers();
83}
84
85
86
87/**
88 * Called via ctx->Driver.Flush()
89 */
90static void
91st_glFlush(struct gl_context *ctx)
92{
93   struct st_context *st = st_context(ctx);
94
95   /* Don't call st_finish() here.  It is not the state tracker's
96    * responsibilty to inject sleeps in the hope of avoiding buffer
97    * synchronization issues.  Calling finish() here will just hide
98    * problems that need to be fixed elsewhere.
99    */
100   st_flush(st, NULL, 0);
101
102   st_manager_flush_frontbuffer(st);
103}
104
105
106/**
107 * Called via ctx->Driver.Finish()
108 */
109static void
110st_glFinish(struct gl_context *ctx)
111{
112   struct st_context *st = st_context(ctx);
113
114   st_finish(st);
115
116   st_manager_flush_frontbuffer(st);
117}
118
119
120static GLenum
121gl_reset_status_from_pipe_reset_status(enum pipe_reset_status status)
122{
123   switch (status) {
124   case PIPE_NO_RESET:
125      return GL_NO_ERROR;
126   case PIPE_GUILTY_CONTEXT_RESET:
127      return GL_GUILTY_CONTEXT_RESET_ARB;
128   case PIPE_INNOCENT_CONTEXT_RESET:
129      return GL_INNOCENT_CONTEXT_RESET_ARB;
130   case PIPE_UNKNOWN_CONTEXT_RESET:
131      return GL_UNKNOWN_CONTEXT_RESET_ARB;
132   default:
133      assert(0);
134      return GL_NO_ERROR;
135   }
136}
137
138
139/**
140 * Query information about GPU resets observed by this context
141 *
142 * Called via \c dd_function_table::GetGraphicsResetStatus.
143 */
144static GLenum
145st_get_graphics_reset_status(struct gl_context *ctx)
146{
147   struct st_context *st = st_context(ctx);
148   enum pipe_reset_status status;
149
150   if (st->reset_status != PIPE_NO_RESET) {
151      status = st->reset_status;
152      st->reset_status = PIPE_NO_RESET;
153   } else {
154      status = st->pipe->get_device_reset_status(st->pipe);
155   }
156
157   return gl_reset_status_from_pipe_reset_status(status);
158}
159
160
161static void
162st_device_reset_callback(void *data, enum pipe_reset_status status)
163{
164   struct st_context *st = data;
165
166   assert(status != PIPE_NO_RESET);
167
168   st->reset_status = status;
169   _mesa_set_context_lost_dispatch(st->ctx);
170}
171
172
173void
174st_install_device_reset_callback(struct st_context *st)
175{
176   if (st->pipe->set_device_reset_callback) {
177      struct pipe_device_reset_callback cb;
178      cb.reset = st_device_reset_callback;
179      cb.data = st;
180      st->pipe->set_device_reset_callback(st->pipe, &cb);
181   }
182}
183
184
185void
186st_init_flush_functions(struct pipe_screen *screen,
187                        struct dd_function_table *functions)
188{
189   functions->Flush = st_glFlush;
190   functions->Finish = st_glFinish;
191
192   if (screen->get_param(screen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY))
193      functions->GetGraphicsResetStatus = st_get_graphics_reset_status;
194}
195