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/*
* Copyright (c) 2008 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.
*/
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 X11Util {
private static final boolean DEBUG = Debug.debug("X11Util");
private X11Util() {}
// ATI's proprietary drivers apparently send GLX tokens even for
// direct contexts, so we need to disable the context optimizations
// in this case
private static boolean isVendorATI;
// Display connection for use by visual selection algorithm and by all offscreen surfaces
private static long staticDisplay=0;
private static boolean xineramaEnabled=false;
private static boolean multisampleAvailable=false;
public static long getDisplayConnection() {
if (staticDisplay == 0) {
NativeWindowFactory.getDefaultFactory().getToolkitLock().lock();
try {
staticDisplay = X11Lib.XOpenDisplay(null);
if (DEBUG && (staticDisplay != 0)) {
long display = staticDisplay;
int screen = X11Lib.DefaultScreen(display);
System.err.println("!!! GLX server vendor : " +
GLX.glXQueryServerString(display, screen, GLX.GLX_VENDOR));
System.err.println("!!! GLX server version: " +
GLX.glXQueryServerString(display, screen, GLX.GLX_VERSION));
System.err.println("!!! GLX client vendor : " +
GLX.glXGetClientString(display, GLX.GLX_VENDOR));
System.err.println("!!! GLX client version: " +
GLX.glXGetClientString(display, GLX.GLX_VERSION));
}
if (staticDisplay != 0) {
String vendor = GLX.glXGetClientString(staticDisplay, GLX.GLX_VENDOR);
if (vendor != null && vendor.startsWith("ATI")) {
isVendorATI = true;
}
xineramaEnabled = X11Lib.XineramaEnabled(staticDisplay);
String exts = GLX.glXGetClientString(staticDisplay, GLX.GLX_EXTENSIONS);
if (exts != null) {
multisampleAvailable = (exts.indexOf("GLX_ARB_multisample") >= 0);
}
}
} finally {
NativeWindowFactory.getDefaultFactory().getToolkitLock().unlock();
}
if (staticDisplay == 0) {
throw new GLException("Unable to open default display, needed for visual selection and offscreen surface handling");
}
}
return staticDisplay;
}
public static boolean isXineramaEnabled() {
if (staticDisplay == 0) {
getDisplayConnection(); // will set xineramaEnabled
}
return xineramaEnabled;
}
public static boolean isMultisampleAvailable() {
if (staticDisplay == 0) {
getDisplayConnection(); // will set multisampleAvailable
}
return multisampleAvailable;
}
/** Workaround for apparent issue with ATI's proprietary drivers
where direct contexts still send GLX tokens for GL calls */
public static boolean isVendorATI() {
return isVendorATI;
}
}
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