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
|
/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
* Copyright (c) 2010 JogAmp Community. 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 jogamp.opengl.windows.wgl;
import javax.media.nativewindow.AbstractGraphicsScreen;
import javax.media.nativewindow.DefaultGraphicsScreen;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.NativeWindowFactory;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLContext;
import javax.media.opengl.GLDrawableFactory;
import javax.media.opengl.GLException;
import javax.media.opengl.GLProfile;
import com.jogamp.nativewindow.WrappedSurface;
import jogamp.nativewindow.windows.GDI;
import jogamp.opengl.GLContextShareSet;
public class WindowsExternalWGLContext extends WindowsWGLContext {
private GLContext lastContext;
private WindowsExternalWGLContext(Drawable drawable, long ctx, WindowsWGLGraphicsConfiguration cfg) {
super(drawable, null);
this.contextHandle = ctx;
if (DEBUG) {
System.err.println(getThreadName() + ": Created external OpenGL context " + toHexString(ctx) + " for " + this);
}
GLContextShareSet.contextCreated(this);
setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT); // use GL_VERSION
getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
}
protected static WindowsExternalWGLContext create(GLDrawableFactory factory, GLProfile glp) {
if(DEBUG) {
System.err.println("WindowsExternalWGLContext 0: werr: " + GDI.GetLastError());
}
final long ctx = WGL.wglGetCurrentContext();
if (0 == ctx) {
throw new GLException("Error: attempted to make an external GLContext without a context current, werr " + GDI.GetLastError());
}
final long hdc = WGL.wglGetCurrentDC();
if (0 == hdc) {
throw new GLException("Error: attempted to make an external GLDrawable without a drawable current, werr " + GDI.GetLastError());
}
AbstractGraphicsScreen aScreen = DefaultGraphicsScreen.createDefault(NativeWindowFactory.TYPE_WINDOWS);
WindowsWGLGraphicsConfiguration cfg;
final int pfdID = WGLUtil.GetPixelFormat(hdc);
if (0 == pfdID) {
// This could have happened if the HDC was released right after the GL ctx made current (SWT),
// WinXP-32bit will not be able to use this HDC afterwards.
// Workaround: Use a fake default configuration
final int werr = GDI.GetLastError();
cfg = WindowsWGLGraphicsConfigurationFactory.createDefaultGraphicsConfiguration(new GLCapabilities(GLProfile.getDefault()), aScreen);
cfg.markExternal();
if(DEBUG) {
System.err.println("WindowsExternalWGLContext invalid hdc/pfd werr "+werr+", using default cfg: " + cfg);
}
} else {
cfg = WindowsWGLGraphicsConfiguration.createFromExternal(factory, hdc, pfdID, glp, aScreen, true);
if(DEBUG) {
System.err.println("WindowsExternalWGLContext valid hdc/pfd, retrieved cfg: " + cfg);
}
}
return new WindowsExternalWGLContext(new Drawable(factory, new WrappedSurface(cfg, hdc, 64, 64, null)), ctx, cfg);
}
@Override
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();
}
@Override
public void release() throws GLException {
super.release();
setCurrent(lastContext);
lastContext = null;
}
@Override
protected void makeCurrentImpl() throws GLException {
}
@Override
protected void releaseImpl() throws GLException {
}
@Override
protected void destroyImpl() throws GLException {
}
// Need to provide the display connection to extension querying APIs
static class Drawable extends WindowsWGLDrawable {
Drawable(GLDrawableFactory factory, NativeSurface comp) {
super(factory, comp, true);
}
@Override
public GLContext createContext(GLContext shareWith) {
throw new GLException("Should not call this");
}
@Override
public int getWidth() {
throw new GLException("Should not call this");
}
@Override
public int getHeight() {
throw new GLException("Should not call this");
}
public void setSize(int width, int height) {
throw new GLException("Should not call this");
}
}
}
|
