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
|
/*
* Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.sun.opengl.impl.macosx.cgl;
import javax.media.opengl.*;
import com.sun.opengl.impl.*;
public class MacOSXExternalCGLContext extends MacOSXCGLContext {
private boolean firstMakeCurrent = true;
private boolean created = true;
private GLContext lastContext;
public MacOSXExternalCGLContext() {
super(null, null);
// FIXME: we don't have a "current context" primitive implemented
// yet on OS X. In the current implementation this would need to
// return an NSOpenGLContext*, but "external" toolkits are not
// guaranteed to be using the Cocoa OpenGL API. Additionally, if
// we switched this implementation to use the low-level CGL APIs,
// we would lose the ability to share textures and display lists
// between contexts since you need an NSOpenGLContext, not a
// CGLContextObj, in order to share textures and display lists
// between two NSOpenGLContexts.
//
// The ramifications here are that it is not currently possible to
// share textures and display lists between an OpenGL context
// created by JOGL and one created by a third-party library on OS
// X.
// context = CGL.CGLGetCurrentContext();
GLContextShareSet.contextCreated(this);
resetGLFunctionAvailability();
}
protected boolean create() {
return true;
}
public int makeCurrent() throws GLException {
// Save last context if necessary to allow external GLContexts to
// talk to other GLContexts created by this library
GLContext cur = getCurrent();
if (cur != null && cur != this) {
lastContext = cur;
setCurrent(null);
}
return super.makeCurrent();
}
public void release() throws GLException {
super.release();
setCurrent(lastContext);
lastContext = null;
}
protected int makeCurrentImpl() throws GLException {
if (firstMakeCurrent) {
firstMakeCurrent = false;
return CONTEXT_CURRENT_NEW;
}
return CONTEXT_CURRENT;
}
protected void releaseImpl() throws GLException {
}
protected void destroyImpl() throws GLException {
created = false;
GLContextShareSet.contextDestroyed(this);
}
public boolean isCreated() {
return created;
}
public void setOpenGLMode(int mode) {
if (mode != MacOSXCGLDrawable.NSOPENGL_MODE)
throw new GLException("OpenGL mode switching not supported for external GLContexts");
}
public int getOpenGLMode() {
return MacOSXCGLDrawable.NSOPENGL_MODE;
}
}
|
