1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright © 2016 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdbool.h>
#include "context.h"
#include "debug_output.h"
#include "get.h"
#include "mtypes.h"
#include "macros.h"
#include "main/dispatch.h" /* for _gloffset_COUNT */
static void GLAPIENTRY
_context_lost_GetSynciv(GLsync sync, GLenum pname, GLsizei bufSize,
GLsizei *length, GLint *values)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx)
_mesa_error(ctx, GL_CONTEXT_LOST, "GetSynciv(invalid call)");
if (pname == GL_SYNC_STATUS && bufSize >= 1)
*values = GL_SIGNALED;
}
static void GLAPIENTRY
_context_lost_GetQueryObjectuiv(GLuint id, GLenum pname, GLuint *params)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx)
_mesa_error(ctx, GL_CONTEXT_LOST, "GetQueryObjectuiv(context lost)");
if (pname == GL_QUERY_RESULT_AVAILABLE)
*params = GL_TRUE;
}
static int
context_lost_nop_handler(void)
{
GET_CURRENT_CONTEXT(ctx);
if (ctx)
_mesa_error(ctx, GL_CONTEXT_LOST, "context lost");
return 0;
}
void
_mesa_set_context_lost_dispatch(struct gl_context *ctx)
{
if (ctx->ContextLost == NULL) {
int numEntries = MAX2(_glapi_get_dispatch_table_size(), _gloffset_COUNT);
ctx->ContextLost = malloc(numEntries * sizeof(_glapi_proc));
if (!ctx->ContextLost)
return;
_glapi_proc *entry = (_glapi_proc *) ctx->ContextLost;
unsigned i;
for (i = 0; i < numEntries; i++)
entry[i] = (_glapi_proc) context_lost_nop_handler;
/* The ARB_robustness specification says:
*
* "* GetError and GetGraphicsResetStatus behave normally following a
* graphics reset, so that the application can determine a reset
* has occurred, and when it is safe to destroy and recreate the
* context.
*
* * Any commands which might cause a polling application to block
* indefinitely will generate a CONTEXT_LOST error, but will also
* return a value indicating completion to the application. Such
* commands include:
*
* + GetSynciv with <pname> SYNC_STATUS ignores the other
* parameters and returns SIGNALED in <values>.
*
* + GetQueryObjectuiv with <pname> QUERY_RESULT_AVAILABLE
* ignores the other parameters and returns TRUE in <params>."
*/
SET_GetError(ctx->ContextLost, _mesa_GetError);
SET_GetGraphicsResetStatusARB(ctx->ContextLost, _mesa_GetGraphicsResetStatusARB);
SET_GetSynciv(ctx->ContextLost, _context_lost_GetSynciv);
SET_GetQueryObjectuiv(ctx->ContextLost, _context_lost_GetQueryObjectuiv);
}
ctx->CurrentServerDispatch = ctx->ContextLost;
_glapi_set_dispatch(ctx->CurrentServerDispatch);
}
/**
* Returns an error code specified by GL_ARB_robustness, or GL_NO_ERROR.
* \return current context status
*/
GLenum GLAPIENTRY
_mesa_GetGraphicsResetStatusARB( void )
{
GET_CURRENT_CONTEXT(ctx);
GLenum status = GL_NO_ERROR;
/* The ARB_robustness specification says:
*
* "If the reset notification behavior is NO_RESET_NOTIFICATION_ARB,
* then the implementation will never deliver notification of reset
* events, and GetGraphicsResetStatusARB will always return NO_ERROR."
*/
if (ctx->Const.ResetStrategy == GL_NO_RESET_NOTIFICATION_ARB) {
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx,
"glGetGraphicsResetStatusARB always returns GL_NO_ERROR "
"because reset notifictation was not requested at context "
"creation.\n");
return GL_NO_ERROR;
}
if (ctx->Driver.GetGraphicsResetStatus) {
/* Query the reset status of this context from the driver core.
*/
status = ctx->Driver.GetGraphicsResetStatus(ctx);
simple_mtx_lock(&ctx->Shared->Mutex);
/* If this context has not been affected by a GPU reset, check to see if
* some other context in the share group has been affected by a reset.
* If another context saw a reset but this context did not, assume that
* this context was not guilty.
*/
if (status != GL_NO_ERROR) {
ctx->Shared->ShareGroupReset = true;
ctx->Shared->DisjointOperation = true;
} else if (ctx->Shared->ShareGroupReset && !ctx->ShareGroupReset) {
status = GL_INNOCENT_CONTEXT_RESET_ARB;
}
ctx->ShareGroupReset = ctx->Shared->ShareGroupReset;
simple_mtx_unlock(&ctx->Shared->Mutex);
}
if (status != GL_NO_ERROR)
_mesa_set_context_lost_dispatch(ctx);
if (!ctx->Driver.GetGraphicsResetStatus && (MESA_VERBOSE & VERBOSE_API))
_mesa_debug(ctx,
"glGetGraphicsResetStatusARB always returns GL_NO_ERROR "
"because the driver doesn't track reset status.\n");
return status;
}
|
