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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 net.java.games.jogl.impl.x11;
import java.awt.Component;
import java.util.*;
import net.java.games.jogl.*;
import net.java.games.jogl.impl.*;
public class X11OnscreenGLContext extends X11GLContext {
// Variables for lockSurface/unlockSurface
private JAWT_DrawingSurface ds;
private JAWT_DrawingSurfaceInfo dsi;
private JAWT_X11DrawingSurfaceInfo x11dsi;
// Variables for pbuffer support
List pbuffersToInstantiate = new ArrayList();
public X11OnscreenGLContext(Component component,
GLCapabilities capabilities,
GLCapabilitiesChooser chooser,
GLContext shareWith) {
super(component, capabilities, chooser, shareWith);
}
protected GL createGL()
{
return new X11GLImpl(this);
}
protected boolean isOffscreen() {
return false;
}
public int getOffscreenContextReadBuffer() {
throw new GLException("Should not call this");
}
public boolean offscreenImageNeedsVerticalFlip() {
throw new GLException("Should not call this");
}
public boolean canCreatePbufferContext() {
// FIXME: should we gate this on GLX 1.3 being available?
return true;
}
public synchronized GLContext createPbufferContext(GLCapabilities capabilities,
int initialWidth,
int initialHeight) {
X11PbufferGLContext ctx = new X11PbufferGLContext(capabilities, initialWidth, initialHeight);
pbuffersToInstantiate.add(ctx);
return ctx;
}
public void bindPbufferToTexture() {
throw new GLException("Should not call this");
}
public void releasePbufferFromTexture() {
throw new GLException("Should not call this");
}
public void setSwapInterval(int interval) {
GL gl = getGL();
if (gl.isExtensionAvailable("GLX_SGI_swap_control")) {
gl.glXSwapIntervalSGI(interval);
}
}
protected synchronized boolean makeCurrent(Runnable initAction) throws GLException {
try {
if (!lockSurface()) {
return false;
}
boolean ret = super.makeCurrent(initAction);
if (ret) {
// Instantiate any pending pbuffers
while (!pbuffersToInstantiate.isEmpty()) {
X11PbufferGLContext ctx =
(X11PbufferGLContext) pbuffersToInstantiate.remove(pbuffersToInstantiate.size() - 1);
ctx.createPbuffer(display, context, getGL());
}
}
return ret;
} catch (RuntimeException e) {
try {
unlockSurface();
} catch (Exception e2) {
// do nothing if unlockSurface throws
}
throw(e);
}
}
protected synchronized void free() throws GLException {
try {
super.free();
} finally {
unlockSurface();
}
}
public synchronized void swapBuffers() throws GLException {
// FIXME: this cast to int would be wrong on 64-bit platforms
// where the argument type to glXMakeCurrent would change (should
// probably make GLXDrawable, and maybe XID, Opaque as long)
GLX.glXSwapBuffers(display, (int) drawable);
}
private boolean lockSurface() throws GLException {
if (drawable != 0) {
throw new GLException("Surface already locked");
}
ds = getJAWT().GetDrawingSurface(component);
if (ds == null) {
// Widget not yet realized
return false;
}
int res = ds.Lock();
if ((res & JAWTFactory.JAWT_LOCK_ERROR) != 0) {
throw new GLException("Unable to lock surface");
}
// See whether the surface changed and if so destroy the old
// OpenGL context so it will be recreated
if ((res & JAWTFactory.JAWT_LOCK_SURFACE_CHANGED) != 0) {
if (context != 0) {
GLX.glXDestroyContext(display, context);
context = 0;
}
}
dsi = ds.GetDrawingSurfaceInfo();
if (dsi == null) {
// Widget not yet realized
ds.Unlock();
getJAWT().FreeDrawingSurface(ds);
ds = null;
return false;
}
x11dsi = (JAWT_X11DrawingSurfaceInfo) dsi.platformInfo();
display = x11dsi.display();
drawable = x11dsi.drawable();
visualID = x11dsi.visualID();
if (display == 0 || drawable == 0) {
// Widget not yet realized
ds.FreeDrawingSurfaceInfo(dsi);
ds.Unlock();
getJAWT().FreeDrawingSurface(ds);
ds = null;
dsi = null;
x11dsi = null;
display = 0;
drawable = 0;
visualID = 0;
return false;
}
mostRecentDisplay = display;
return true;
}
private void unlockSurface() {
if (drawable == 0) {
throw new GLException("Surface already unlocked");
}
ds.FreeDrawingSurfaceInfo(dsi);
ds.Unlock();
getJAWT().FreeDrawingSurface(ds);
ds = null;
dsi = null;
x11dsi = null;
display = 0;
drawable = 0;
visualID = 0;
}
protected void create() {
chooseVisualAndCreateContext(true);
}
}
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