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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.opengl.*;
import com.sun.opengl.impl.*;
import com.sun.opengl.impl.x11.*;
import java.nio.LongBuffer;
public class X11ExternalGLXDrawable extends X11GLXDrawable {
private int fbConfigID;
private int renderType;
private long readDrawable;
private X11ExternalGLXDrawable(GLDrawableFactory factory, NativeWindow component) {
super(factory, component, true, null, null);
readDrawable = GLX.glXGetCurrentReadDrawable();
// Need GLXFBConfig ID in order to properly create new contexts
// on this drawable
long display = getNativeWindow().getDisplayHandle();
long context = GLX.glXGetCurrentContext();
int[] val = new int[1];
GLX.glXQueryContext(display, context, GLX.GLX_FBCONFIG_ID, val, 0);
fbConfigID = val[0];
renderType = GLX.GLX_RGBA_TYPE;
GLX.glXQueryContext(display, context, GLX.GLX_RENDER_TYPE, val, 0);
if ((val[0] & GLX.GLX_RGBA_BIT) == 0) {
if (DEBUG) {
System.err.println("X11ExternalGLXDrawable: WARNING: forcing GLX_RGBA_TYPE for newly created contexts");
}
}
}
protected static X11ExternalGLXDrawable create(GLDrawableFactory factory) {
factory.lockToolkit();
try {
long display = GLX.glXGetCurrentDisplay();
long drawable = GLX.glXGetCurrentDrawable();
if (drawable == 0) {
throw new GLException("Error: attempted to make an external GLDrawable without a drawable/context current");
}
long context = GLX.glXGetCurrentContext();
int[] val = new int[1];
GLX.glXQueryContext(display, context, GLX.GLX_SCREEN, val, 0);
int screen = val[0];
NullWindow nw = new NullWindow();
nw.setSurfaceHandle(drawable);
nw.setScreenIndex(screen);
return new X11ExternalGLXDrawable(factory, nw);
} finally {
factory.unlockToolkit();
}
}
public GLContext createContext(GLContext shareWith) {
return new Context(this, shareWith);
}
public void setSize(int newWidth, int newHeight) {
throw new GLException("Should not call this");
}
public int getWidth() {
throw new GLException("Should not call this");
}
public int getHeight() {
throw new GLException("Should not call this");
}
class Context extends X11GLXContext {
Context(X11GLXDrawable drawable, GLContext shareWith) {
super(drawable, shareWith);
}
protected int makeCurrentImpl() throws GLException {
if (drawable.getNativeWindow().getSurfaceHandle() == 0) {
// parent drawable not properly initialized
// FIXME: signal error?
if (DEBUG) {
System.err.println("parent drawable not properly initialized");
}
return CONTEXT_NOT_CURRENT;
}
// Note that we have to completely override makeCurrentImpl
// because the underlying makeCurrent call differs from the norm
getFactory().lockToolkit();
try {
boolean created = false;
if (context == 0) {
create();
if (DEBUG) {
System.err.println(getThreadName() + ": !!! Created GL context for " + getClass().getName());
}
created = true;
}
if (!GLX.glXMakeContextCurrent(drawable.getNativeWindow().getDisplayHandle(),
drawable.getNativeWindow().getSurfaceHandle(),
readDrawable,
context)) {
throw new GLException("Error making context current");
} else {
if (DEBUG && VERBOSE) {
System.err.println(getThreadName() + ": glXMakeCurrent(display " + toHexString(drawable.getNativeWindow().getDisplayHandle()) +
", drawable " + toHexString(drawable.getNativeWindow().getSurfaceHandle()) +
", context " + toHexString(context) + ") succeeded");
}
}
if (created) {
resetGLFunctionAvailability();
return CONTEXT_CURRENT_NEW;
}
return CONTEXT_CURRENT;
} finally {
getFactory().unlockToolkit();
}
}
protected void releaseImpl() throws GLException {
getFactory().lockToolkit();
try {
if (!GLX.glXMakeContextCurrent(drawable.getNativeWindow().getDisplayHandle(), 0, 0, 0)) {
throw new GLException("Error freeing OpenGL context");
}
} finally {
getFactory().unlockToolkit();
}
}
protected void create() {
long display = getNativeWindow().getDisplayHandle();
int screen = getNativeWindow().getScreenIndex();
// We already have the GLXFBConfig ID for the context. All we
// need to do is use it to choose the GLXFBConfig and then
// create a context with it.
int[] iattributes = new int[] {
GLX.GLX_FBCONFIG_ID,
fbConfigID,
0,
0
};
float[] fattributes = new float[0];
int[] nelementsTmp = new int[1];
LongBuffer fbConfigs = GLX.glXChooseFBConfig(display, screen, iattributes, 0, nelementsTmp, 0);
int nelements = nelementsTmp[0];
if (nelements <= 0) {
throw new GLException("context creation error: couldn't find a suitable frame buffer configuration");
}
if (nelements != 1) {
throw new GLException("context creation error: shouldn't get more than one GLXFBConfig");
}
// Note that we currently don't allow selection of anything but
// the first GLXFBConfig in the returned list (there should be only one)
long fbConfig = fbConfigs.get(0);
// Create a gl context for the drawable
X11GLXContext other = (X11GLXContext) GLContextShareSet.getShareContext(this);
long share = 0;
if (other != null) {
share = other.getContext();
if (share == 0) {
throw new GLException("GLContextShareSet returned an invalid OpenGL context");
}
}
// FIXME: how to determine "direct" bit?
context = GLX.glXCreateNewContext(display, fbConfig, renderType, share, true);
if (context == 0) {
String detail = " display=" + toHexString(display) +
" fbconfig=" + fbConfig +
" fbconfigID=" + toHexString(fbConfigID) +
" renderType=" + toHexString(renderType) +
" share=" + toHexString(share);
throw new GLException("context creation error: glXCreateNewContext() failed: " + detail);
}
GLContextShareSet.contextCreated(this);
if (DEBUG) {
System.err.println("Created context " + toHexString(context) +
" for GLXDrawable " + toHexString(drawable.getNativeWindow().getSurfaceHandle()));
}
}
}
}
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