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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>glGetGraphicsResetStatus - OpenGL 4 Reference Pages</title>
<link rel="stylesheet" type="text/css" href="opengl-man.css"/>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"/>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
MathML: {
extensions: ["content-mathml.js"]
},
tex2jax: {
inlineMath: [['$','$'], ['\\(','\\)']]
}
});
</script>
<script type="text/javascript" src="https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"/>
</head>
<body>
<header/>
<div class="refentry" id="glGetGraphicsResetStatus">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>glGetGraphicsResetStatus — check if the rendering context has not been lost due to software or hardware issues</p>
</div>
<div class="refsynopsisdiv">
<h2>C Specification</h2>
<div class="funcsynopsis">
<table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
<tr>
<td>
<code class="funcdef">GLenum <strong class="fsfunc">glGetGraphicsResetStatus</strong>(</code>
</td>
<td><var class="pdparam">void</var><code>)</code>;</td>
</tr>
</table>
<div class="funcprototype-spacer"> </div>
</div>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
Certain events can result in a reset of the GL context. Such a reset causes
all context state to be lost and requires the application to recreate all
objects in the affected context.
</p>
<p>
<code class="function">glGetGraphicsResetStatus</code> can return one of the following
constants:
</p>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<code class="constant">GL_NO_ERROR</code>
</span>
</dt>
<dd>
<p>
Indicates that the GL context has not been in a reset state since
the last call.
</p>
</dd>
<dt>
<span class="term">
<code class="constant">GL_GUILTY_CONTEXT_RESET</code>
</span>
</dt>
<dd>
<p>
Indicates that a reset has been detected that is attributable to
the current GL context.
</p>
</dd>
<dt>
<span class="term">
<code class="constant">GL_INNOCENT_CONTEXT_RESET</code>
</span>
</dt>
<dd>
<p>
Indicates a reset has been detected that is not attributable to
the current GL context.
</p>
</dd>
<dt>
<span class="term">
<code class="constant">GL_UNKNOWN_CONTEXT_RESET</code>
</span>
</dt>
<dd>
<p>
Indicates a detected graphics reset whose cause is unknown.
</p>
</dd>
</dl>
</div>
<p>
If a reset status other than <code class="constant">GL_NO_ERROR</code> is returned
and subsequent calls return <code class="constant">GL_NO_ERROR</code>, the context
reset was encountered and completed. If a reset status is repeatedly
returned, the context may be in the process of resetting.
</p>
<p>
Reset notification behavior is determined at context creation time, and
may be queried by calling <code class="function">GetIntegerv</code> with the
symbolic constant <code class="constant">GL_RESET_NOTIFICATION_STRATEGY</code>.
</p>
<p>
If the reset notification behavior is
<code class="constant">GL_NO_RESET_NOTIFICATION</code>, then the
implementation will never deliver notification of reset events,
and <code class="function">glGetGraphicsResetStatus</code> will always
return <code class="constant">GL_NO_ERROR</code>.
</p>
<p>
If the behavior is <code class="constant">GL_LOSE_CONTEXT_ON_RESET</code>, a graphics reset
will result in the loss of all context state, requiring the recreation of all
associated objects. In this case <code class="function">glGetGraphicsResetStatus</code>
may return any of the values described above.
</p>
<p>
If a graphics reset notification occurs in a context, a notification must also occur
in all other contexts which share objects with that context.
</p>
<p>
After a graphics reset has occurred on a context, subsequent GL commands on that
context (or any context which shares with that context) will generate a
<code class="constant">GL_CONTEXT_LOST</code> error. Such commands will not have
side effects (in particular, they will not modify memory passed by pointer
for query results), and will not block indefinitely or cause termination
of the application. There are two important exceptions to this behavior:
</p>
<p>
</p>
<div class="itemizedlist">
<ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<p>
<code class="function">glGetError</code> and <code class="function">glGetGraphicsResetStatus</code>
behave normally following a graphics reset, so that the application can
determine a reset has occurred, and when it is safe to destroy and re-create
the context.
</p>
</li>
<li class="listitem">
<p>
Any commands which might cause a polling application to block indefinitely
will generate a <code class="constant">GL_CONTEXT_LOST</code> error, but will also return
a value indicating completion to the application. Such commands include:
</p>
<div class="itemizedlist">
<ul class="itemizedlist" style="list-style-type: circle; ">
<li class="listitem">
<p>
<code class="function">glGetSynciv</code> with pname <code class="constant">GL_SYNC_STATUS</code>
ignores the other parameters and returns <code class="constant">GL_SIGNALED</code> in
<em class="parameter"><code>values</code></em>.
</p>
</li>
<li class="listitem">
<p>
<code class="function">glGetQueryObjectuiv</code> with pname <code class="constant">GL_QUERY_RESULT_AVAILABLE</code>
ignores the other parameters and returns <code class="constant">TRUE</code> in <em class="parameter"><code>params</code></em>.
</p>
</li>
</ul>
</div>
<p>
</p>
</li>
</ul>
</div>
<p>
</p>
</div>
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
<table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
<colgroup>
<col style="text-align: left; "/>
<col style="text-align: center; " class="firstvers"/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; "/>
<col style="text-align: center; " class="lastvers"/>
</colgroup>
<thead>
<tr>
<th style="text-align: left; border-right: 2px solid ; ">
</th>
<th style="text-align: center; border-bottom: 2px solid ; " colspan="12">
<span class="bold"><strong>OpenGL Version</strong></span>
</th>
</tr>
<tr>
<th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>Function / Feature Name</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>2.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>3.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.0</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.1</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.2</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.3</strong></span>
</th>
<th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.4</strong></span>
</th>
<th style="text-align: center; border-bottom: 2px solid ; ">
<span class="bold"><strong>4.5</strong></span>
</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left; border-right: 2px solid ; ">
<code class="function">glGetGraphicsResetStatus</code>
</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; border-right: 2px solid ; ">-</td>
<td style="text-align: center; ">✔</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="glGetError.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetError</span></span></a>
<a class="citerefentry" href="glGetIntegerv.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetIntegerv</span></span></a>,
<a class="citerefentry" href="glGetQueryObjectuiv.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObjectuiv</span></span></a>
<a class="citerefentry" href="glGetSynciv.xhtml"><span class="citerefentry"><span class="refentrytitle">glGetSynciv</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 2014 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="link" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
</div>
</div>
<footer/>
</body>
</html>
|
