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