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/*
* Copyright (c) 2005 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.macosx.cgl;
import javax.media.nativewindow.AbstractGraphicsScreen;
import javax.media.nativewindow.DefaultGraphicsScreen;
import javax.media.nativewindow.NativeSurface;
import javax.media.nativewindow.NativeWindowFactory;
import javax.media.opengl.GLCapabilitiesImmutable;
import javax.media.opengl.GLContext;
import javax.media.opengl.GLDrawableFactory;
import javax.media.opengl.GLException;
import com.jogamp.nativewindow.WrappedSurface;
import jogamp.opengl.GLContextImpl;
import jogamp.opengl.GLContextShareSet;
import jogamp.opengl.macosx.cgl.MacOSXCGLDrawable.GLBackendType;
public class MacOSXExternalCGLContext extends MacOSXCGLContext {
private GLContext lastContext;
private MacOSXExternalCGLContext(Drawable drawable, boolean isNSContext, long handle) {
super(drawable, null);
setOpenGLMode(isNSContext ? GLBackendType.NSOPENGL : GLBackendType.CGL );
drawable.registerContext(this);
this.contextHandle = handle;
GLContextShareSet.contextCreated(this);
setGLFunctionAvailability(false, 0, 0, CTX_PROFILE_COMPAT);
getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
}
protected static MacOSXExternalCGLContext create(GLDrawableFactory factory) {
long pixelFormat = 0;
long currentDrawable = 0;
long contextHandle = CGL.getCurrentContext(); // Check: MacOSX 10.3 ..
boolean isNSContext = 0 != contextHandle;
if( isNSContext ) {
long ctx = CGL.getCGLContext(contextHandle);
if (ctx == 0) {
throw new GLException("Error: NULL Context (CGL) of Context (NS) 0x" +Long.toHexString(contextHandle));
}
pixelFormat = CGL.CGLGetPixelFormat(ctx);
currentDrawable = CGL.getNSView(contextHandle);
if(DEBUG) {
System.err.println("MacOSXExternalCGLContext Create Context (NS) 0x"+Long.toHexString(contextHandle)+
", Context (CGL) 0x"+Long.toHexString(ctx)+
", pixelFormat 0x"+Long.toHexString(pixelFormat)+
", drawable 0x"+Long.toHexString(currentDrawable));
}
} else {
contextHandle = CGL.CGLGetCurrentContext();
if (contextHandle == 0) {
throw new GLException("Error: current Context (CGL) null, no Context (NS)");
}
pixelFormat = CGL.CGLGetPixelFormat(contextHandle);
if(DEBUG) {
System.err.println("MacOSXExternalCGLContext Create Context (CGL) 0x"+Long.toHexString(contextHandle)+
", pixelFormat 0x"+Long.toHexString(pixelFormat));
}
}
if (0 == pixelFormat) {
throw new GLException("Error: current pixelformat of current Context 0x"+Long.toHexString(contextHandle)+" is null");
}
GLCapabilitiesImmutable caps = MacOSXCGLGraphicsConfiguration.CGLPixelFormat2GLCapabilities(pixelFormat);
if(DEBUG) {
System.err.println("MacOSXExternalCGLContext Create "+caps);
}
AbstractGraphicsScreen aScreen = DefaultGraphicsScreen.createDefault(NativeWindowFactory.TYPE_MACOSX);
MacOSXCGLGraphicsConfiguration cfg = new MacOSXCGLGraphicsConfiguration(aScreen, caps, caps, pixelFormat);
if(0 == currentDrawable) {
// set a fake marker stating a valid drawable
currentDrawable = 1;
}
WrappedSurface ns = new WrappedSurface(cfg, currentDrawable, 64, 64, null);
return new MacOSXExternalCGLContext(new Drawable(factory, ns), isNSContext, contextHandle);
}
@Override
protected boolean createImpl(GLContextImpl shareWith) throws GLException {
return true;
}
@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 MacOSXCGLDrawable {
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");
}
}
}
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