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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.windows;
import java.awt.Component;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.Rectangle;
import java.io.File;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.Collection;
import java.util.Iterator;
import net.java.games.jogl.*;
import net.java.games.jogl.impl.*;
public class WindowsGLContextFactory extends GLContextFactory {
private static final boolean DEBUG = Debug.debug("WindowsGLContextFactory");
private static final boolean VERBOSE = Debug.verbose();
static {
NativeLibLoader.load();
}
// On Windows we want to be able to use some extension routines like
// wglChoosePixelFormatARB during the creation of the user's first
// GLContext. However, this and other routines' function pointers
// aren't loaded by the driver until the first OpenGL context is
// created. The standard way of working around this chicken-and-egg
// problem is to create a dummy window, show it, send it a paint
// message, create an OpenGL context, fetch the needed function
// pointers, and then destroy the dummy window and context. It turns
// out that ATI cards need the dummy context to be current while
// wglChoosePixelFormatARB is called, so we cache the extension
// strings the dummy context reports as being available.
private static Map/*<GraphicsDevice, GL>*/ dummyContextMap = new HashMap();
private static Map/*<GraphicsDevice, String>*/ dummyExtensionsMap = new HashMap();
private static Set/*<GraphicsDevice >*/ pendingContextSet = new HashSet();
public WindowsGLContextFactory() {
AccessController.doPrivileged( new PrivilegedAction() {
public Object run() {
// Test for whether we should enable the single-threaded
// workaround for ATI cards. It appears that if we make any
// OpenGL context current on more than one thread on ATI cards
// on Windows then we see random failures like the inability
// to create more OpenGL contexts, or having just the next
// OpenGL SetPixelFormat operation fail with a GetNextError()
// code of 0 (but subsequent ones on subsequently-created
// windows succeed). These kinds of failures are obviously due
// to bugs in ATI's OpenGL drivers. Through trial and error it
// was found that specifying
// -DJOGL_SINGLE_THREADED_WORKAROUND=true on the command line
// caused these problems to completely disappear. Therefore at
// least on Windows we try to enable the single-threaded
// workaround before creating any OpenGL contexts. In the
// future, if problems are encountered on other platforms and
// -DJOGL_SINGLE_THREADED_WORKAROUND=true works around them,
// we may want to implement a workaround like this on other
// platforms.
// The algorithm here is to try to find the system directory
// (assuming it is on the same drive as TMPDIR, exposed
// through the system property java.io.tmpdir) and see whether
// a known file in the ATI drivers is present; if it is, we
// enable the single-threaded workaround.
// If any path down this code fails, we simply bail out -- we
// don't go to great lengths to figure out if the ATI drivers
// are present. We could add more checks here in the future if
// these appear to be insufficient.
String tmpDirProp = System.getProperty("java.io.tmpdir");
if (tmpDirProp != null) {
File file = new File(tmpDirProp);
if (file.isAbsolute()) {
File parent = null;
do {
parent = file.getParentFile();
if (parent != null) {
file = parent;
}
} while (parent != null);
// Now the file contains just the drive letter
file = new File(new File(new File(file, "windows"), "system32"), "atioglxx.dll");
if (file.exists()) {
SingleThreadedWorkaround.shouldDoWorkaround();
}
}
}
return( null );
}
});
}
public GraphicsConfiguration chooseGraphicsConfiguration(GLCapabilities capabilities,
GLCapabilitiesChooser chooser,
GraphicsDevice device) {
return null;
}
public GLDrawable getGLDrawable(Object target,
GLCapabilities capabilities,
GLCapabilitiesChooser chooser) {
if (target == null) {
throw new IllegalArgumentException("Null target");
}
if (!(target instanceof Component)) {
throw new IllegalArgumentException("GLDrawables not supported for objects of type " +
target.getClass().getName() + " (only Components are supported in this implementation)");
}
return new WindowsOnscreenGLDrawable((Component) target, capabilities, chooser);
}
public GLDrawableImpl createOffscreenDrawable(GLCapabilities capabilities,
GLCapabilitiesChooser chooser) {
return new WindowsOffscreenGLDrawable(capabilities, chooser);
}
static String wglGetLastError() {
int err = WGL.GetLastError();
String detail = null;
switch (err) {
case WGL.ERROR_INVALID_PIXEL_FORMAT: detail = "ERROR_INVALID_PIXEL_FORMAT"; break;
case WGL.ERROR_NO_SYSTEM_RESOURCES: detail = "ERROR_NO_SYSTEM_RESOURCES"; break;
case WGL.ERROR_INVALID_DATA: detail = "ERROR_INVALID_DATA"; break;
case WGL.ERROR_PROC_NOT_FOUND: detail = "ERROR_PROC_NOT_FOUND"; break;
case WGL.ERROR_INVALID_WINDOW_HANDLE:detail = "ERROR_INVALID_WINDOW_HANDLE"; break;
default: detail = "(Unknown error code " + err + ")"; break;
}
return detail;
}
}
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