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/*
* Copyright (c) 2003 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;
import java.util.*;
import javax.media.opengl.*;
import com.sun.opengl.impl.*;
public class MacOSXOnscreenGLContext extends MacOSXGLContext {
protected MacOSXOnscreenGLDrawable drawable;
public MacOSXOnscreenGLContext(MacOSXOnscreenGLDrawable drawable,
GLContext shareWith) {
super(drawable, shareWith);
this.drawable = drawable;
}
protected int makeCurrentImpl() throws GLException {
try {
int lockRes = drawable.lockSurface();
if (lockRes == MacOSXOnscreenGLDrawable.LOCK_SURFACE_NOT_READY) {
return CONTEXT_NOT_CURRENT;
}
if (lockRes == MacOSXOnscreenGLDrawable.LOCK_SURFACE_CHANGED) {
super.destroy();
}
int ret = super.makeCurrentImpl();
if ((ret == CONTEXT_CURRENT) ||
(ret == CONTEXT_CURRENT_NEW)) {
// Assume the canvas might have been resized or moved and tell the OpenGL
// context to update itself. This used to be done only upon receiving a
// reshape event but that doesn't appear to be sufficient. An experiment
// was also done to add a HierarchyBoundsListener to the GLCanvas and
// do this updating only upon reshape of this component or reshape or movement
// of an ancestor, but this also wasn't sufficient and left garbage on the
// screen in some situations.
CGL.updateContext(nsContext, drawable.getView());
} else {
// View might not have been ready
drawable.unlockSurface();
}
return ret;
} catch (RuntimeException e) {
try {
drawable.unlockSurface();
} catch (Exception e2) {
// do nothing if unlockSurface throws
}
throw(e);
}
}
protected void releaseImpl() throws GLException {
try {
super.releaseImpl();
} finally {
drawable.unlockSurface();
}
}
public void swapBuffers() throws GLException {
if (!CGL.flushBuffer(nsContext, drawable.getView())) {
throw new GLException("Error swapping buffers");
}
}
}
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