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/*
* 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.x11.glx;
import java.nio.IntBuffer;
import com.jogamp.nativewindow.NativeSurface;
import com.jogamp.nativewindow.VisualIDHolder;
import com.jogamp.opengl.GLCapabilities;
import com.jogamp.opengl.GLContext;
import com.jogamp.opengl.GLDrawableFactory;
import com.jogamp.opengl.GLException;
import com.jogamp.opengl.GLProfile;
import jogamp.nativewindow.WrappedSurface;
import jogamp.opengl.GLContextShareSet;
import com.jogamp.common.nio.Buffers;
import com.jogamp.nativewindow.x11.X11GraphicsScreen;
public class X11ExternalGLXContext extends X11GLXContext {
private X11ExternalGLXContext(final Drawable drawable, final long ctx) {
super(drawable, null);
this.contextHandle = ctx;
GLContextShareSet.contextCreated(this);
if( !setGLFunctionAvailability(false, 0, 0, 0, false /* strictMatch */, false /* withinGLVersionsMapping */) ) { // use GL_VERSION
throw new InternalError("setGLFunctionAvailability !strictMatch failed");
}
getGLStateTracker().setEnabled(false); // external context usage can't track state in Java
}
protected static X11ExternalGLXContext create(final GLDrawableFactory factory, final GLProfile glp) {
final long ctx = GLX.glXGetCurrentContext();
if (ctx == 0) {
throw new GLException("Error: current context null");
}
final long display = GLX.glXGetCurrentDisplay();
if (display == 0) {
throw new GLException("Error: current display null");
}
final long drawable = GLX.glXGetCurrentDrawable();
if (drawable == 0) {
throw new GLException("Error: attempted to make an external GLDrawable without a drawable/context current");
}
final IntBuffer val = Buffers.newDirectIntBuffer(1);
int w, h;
GLX.glXQueryDrawable(display, drawable, GLX.GLX_WIDTH, val);
w=val.get(0);
GLX.glXQueryDrawable(display, drawable, GLX.GLX_HEIGHT, val);
h=val.get(0);
GLX.glXQueryContext(display, ctx, GLX.GLX_SCREEN, val);
final X11GraphicsScreen x11Screen = (X11GraphicsScreen) X11GraphicsScreen.createScreenDevice(display, val.get(0), false);
GLX.glXQueryContext(display, ctx, GLX.GLX_FBCONFIG_ID, val);
X11GLXGraphicsConfiguration cfg = null;
// sometimes glXQueryContext on an external context gives us a framebuffer config ID
// of 0, which doesn't work in a subsequent call to glXChooseFBConfig; if this happens,
// create and use a default config (this has been observed when running on CentOS 5.5 inside
// of VMWare Server 2.0 with the Mesa 6.5.1 drivers)
if( VisualIDHolder.VID_UNDEFINED == val.get(0) || !X11GLXGraphicsConfiguration.GLXFBConfigIDValid(display, x11Screen.getIndex(), val.get(0)) ) {
final GLCapabilities glcapsDefault = new GLCapabilities(GLProfile.getDefault());
cfg = X11GLXGraphicsConfigurationFactory.chooseGraphicsConfigurationStatic(glcapsDefault, glcapsDefault, null, x11Screen, VisualIDHolder.VID_UNDEFINED);
if(DEBUG) {
System.err.println("X11ExternalGLXContext invalid FBCONFIG_ID "+val.get(0)+", using default cfg: " + cfg);
}
} else {
cfg = X11GLXGraphicsConfiguration.create(glp, x11Screen, val.get(0));
}
final WrappedSurface ns = new WrappedSurface(cfg, drawable, w, h, true);
return new X11ExternalGLXContext(new Drawable(factory, ns), ctx);
}
@Override
protected boolean createImpl(final long shareWithHandle) throws GLException {
return true;
}
@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 X11GLXDrawable {
Drawable(final GLDrawableFactory factory, final NativeSurface comp) {
super(factory, comp, true);
}
@Override
public GLContext createContext(final GLContext shareWith) {
throw new GLException("Should not call this");
}
@Override
public int getSurfaceWidth() {
throw new GLException("Should not call this");
}
@Override
public int getSurfaceHeight() {
throw new GLException("Should not call this");
}
public void setSize(final int width, final int height) {
throw new GLException("Should not call this");
}
}
}
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