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/*
* Copyright (c) 2006 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.awt.Graphics;
import javax.media.opengl.*;
import com.sun.opengl.impl.*;
/** MacOSXGLContext implementation supporting the Java2D/JOGL bridge
* on Mac OS X. The external GLDrawable mechanism does not work on Mac
* OS X due to how drawables and contexts are operated upon on this
* platform, so it is necessary to supply an alternative means to
* create, make current, and destroy contexts on the Java2D "drawable"
* on the Mac platform.
*/
public class MacOSXJava2DGLContext extends MacOSXGLContext implements Java2DGLContext {
private Graphics graphics;
// FIXME: ignoring context sharing for the time being; will need to
// rethink this in particular if using FBOs to implement the
// Java2D/OpenGL pipeline on Mac OS X
public MacOSXJava2DGLContext(GLContext shareWith) {
super(null, shareWith);
}
public void setGraphics(Graphics g) {
this.graphics = g;
}
protected int makeCurrentImpl() throws GLException {
boolean created = false;
if (nsContext == 0) {
if (!create()) {
return CONTEXT_NOT_CURRENT;
}
if (DEBUG) {
System.err.println("!!! Created GL nsContext for " + getClass().getName());
}
created = true;
}
if (!Java2D.makeOGLContextCurrentOnSurface(graphics, nsContext)) {
throw new GLException("Error making context current");
}
if (created) {
resetGLFunctionAvailability();
return CONTEXT_CURRENT_NEW;
}
return CONTEXT_CURRENT;
}
protected boolean create() {
// Find and configure share context
MacOSXGLContext other = (MacOSXGLContext) GLContextShareSet.getShareContext(this);
long share = 0;
if (other != null) {
// Reconfigure pbuffer-based GLContexts
if (other instanceof MacOSXPbufferGLContext) {
MacOSXPbufferGLContext ctx = (MacOSXPbufferGLContext) other;
ctx.setOpenGLMode(MacOSXGLDrawable.CGL_MODE);
} else {
if (other.getOpenGLMode() != MacOSXGLDrawable.CGL_MODE) {
throw new GLException("Can't share between NSOpenGLContexts and CGLContextObjs");
}
}
share = other.getNSContext();
// Note we don't check for a 0 return value, since switching
// the context's mode causes it to be destroyed and not
// re-initialized until the next makeCurrent
}
if (DEBUG) {
System.err.println("!!! Share context is " + toHexString(share) + " for " + getClass().getName());
}
long ctx = Java2D.createOGLContextOnSurface(graphics, share);
if (ctx == 0) {
return false;
}
// FIXME: think about GLContext sharing
nsContext = ctx;
return true;
}
protected void releaseImpl() throws GLException {
// FIXME: would need another primitive in the Java2D class in
// order to implement this; hopefully should not matter for
// correctness
}
protected void destroyImpl() throws GLException {
if (nsContext != 0) {
Java2D.destroyOGLContext(nsContext);
if (DEBUG) {
System.err.println("!!! Destroyed OpenGL context " + nsContext);
}
nsContext = 0;
// FIXME
// GLContextShareSet.contextDestroyed(this);
}
}
public void setSwapInterval(int interval) {
// Not supported in this context implementation
}
public void setOpenGLMode(int mode) {
if (mode != MacOSXGLDrawable.CGL_MODE)
throw new GLException("OpenGL mode switching not supported for Java2D GLContexts");
}
public int getOpenGLMode() {
return MacOSXGLDrawable.CGL_MODE;
}
}
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