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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.x11.glx;
import javax.media.nwi.*;
import javax.media.opengl.*;
import com.sun.opengl.impl.*;
import com.sun.opengl.impl.x11.*;
public class X11OffscreenGLXDrawable extends X11GLXDrawable {
private long pixmap;
private boolean isDoubleBuffered;
protected X11OffscreenGLXDrawable(GLDrawableFactory factory,
NWCapabilities requestedCapabilities,
NWCapabilitiesChooser chooser,
int width,
int height) {
super(factory, new NullWindow(), true, requestedCapabilities, chooser);
((NullWindow) getNativeWindow()).setSize(width, height);
create();
}
public GLContext createContext(GLContext shareWith) {
return new X11OffscreenGLXContext(this, shareWith);
}
private void create() {
NullWindow nw = (NullWindow) getNativeWindow();
long dpy = X11Util.getDisplayConnection();
nw.setDisplayHandle(dpy);
XVisualInfo vis = chooseVisual(false);
int bitsPerPixel = vis.depth();
getFactoryImpl().lockToolkit();
try {
int screen = X11Lib.DefaultScreen(dpy);
nw.setScreenIndex(screen);
pixmap = X11Lib.XCreatePixmap(dpy, (int) X11Lib.RootWindow(dpy, screen),
component.getWidth(), component.getHeight(), bitsPerPixel);
if (pixmap == 0) {
throw new GLException("XCreatePixmap failed");
}
long drawable = GLX.glXCreateGLXPixmap(dpy, vis, pixmap);
if (drawable == 0) {
X11Lib.XFreePixmap(dpy, pixmap);
pixmap = 0;
throw new GLException("glXCreateGLXPixmap failed");
}
nw.setSurfaceHandle(drawable);
isDoubleBuffered = (X11GLXDrawableFactory.glXGetConfig(dpy, vis, GLX.GLX_DOUBLEBUFFER, new int[1], 0) != 0);
if (DEBUG) {
System.err.println("Created pixmap " + toHexString(pixmap) +
", GLXPixmap " + toHexString(drawable) +
", display " + toHexString(dpy));
}
setChosenNWCapabilities(((X11GLXDrawableFactory)getFactory()).xvi2NWCapabilities(dpy, vis));
} finally {
getFactoryImpl().unlockToolkit();
}
}
public void destroy() {
if (pixmap == 0) return;
try {
NativeWindow nw = getNativeWindow();
long display = nw.getDisplayHandle();
long drawable = nw.getSurfaceHandle();
if (DEBUG) {
System.err.println("Destroying pixmap " + toHexString(pixmap) +
", GLXPixmap " + toHexString(drawable) +
", display " + toHexString(display));
}
// Must destroy pixmap and GLXPixmap
getFactoryImpl().lockToolkit();
if (DEBUG) {
long cur = GLX.glXGetCurrentContext();
if (cur != 0) {
System.err.println("WARNING: found context " + toHexString(cur) + " current during pixmap destruction");
}
}
// FIXME: workaround for crashes on NVidia hardware when
// destroying pixmap (no context is current at the point of the
// crash, at least from the point of view of
// glXGetCurrentContext)
GLX.glXMakeCurrent(display, 0, 0);
GLX.glXDestroyGLXPixmap(display, drawable);
X11Lib.XFreePixmap(display, pixmap);
drawable = 0;
pixmap = 0;
display = 0;
setChosenNWCapabilities(null);
} finally {
getFactoryImpl().unlockToolkit();
}
}
public boolean isDoubleBuffered() {
return isDoubleBuffered;
}
}
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