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/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions 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.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.opengl;
import java.util.List;
import com.jogamp.nativewindow.CapabilitiesChooser;
import com.jogamp.nativewindow.CapabilitiesImmutable;
import com.jogamp.nativewindow.GraphicsConfigurationFactory;
import com.jogamp.nativewindow.NativeWindowException;
import com.jogamp.opengl.DefaultGLCapabilitiesChooser;
public abstract class GLGraphicsConfigurationFactory extends GraphicsConfigurationFactory {
protected static int chooseCapabilities(CapabilitiesChooser chooser, final CapabilitiesImmutable capsRequested,
final List<? extends CapabilitiesImmutable> availableCaps, final int recommendedIndex) {
if (null == capsRequested) {
throw new NativeWindowException("Null requested capabilities");
}
if ( 0 == availableCaps.size() ) {
if (DEBUG) {
System.err.println("Empty available capabilities");
}
return -1; // none available
}
if(null == chooser && 0 <= recommendedIndex && capsRequested.isBackgroundOpaque()) {
if (DEBUG) {
System.err.println("chooseCapabilities: Using recommendedIndex (opaque): idx " + recommendedIndex);
}
return recommendedIndex;
}
int chosenIndex = recommendedIndex;
if (null == chooser) {
chooser = new DefaultGLCapabilitiesChooser();
}
try {
chosenIndex = chooser.chooseCapabilities(capsRequested, availableCaps, recommendedIndex);
if(0 <= chosenIndex) {
if (DEBUG) {
System.err.println("chooseCapabilities: Chosen idx " + chosenIndex);
}
return chosenIndex;
}
} catch (final NativeWindowException e) {
if (DEBUG) {
e.printStackTrace();
}
}
// keep on going ..
// seek first available one ..
for (chosenIndex = 0; chosenIndex < availableCaps.size() && availableCaps.get(chosenIndex) == null; chosenIndex++) {
// nop
}
if (chosenIndex == availableCaps.size()) {
// give up ..
if (DEBUG) {
System.err.println("chooseCapabilities: Failed .. nothing available, bail out");
}
return -1;
}
if (DEBUG) {
System.err.println("chooseCapabilities: Fall back to 1st available idx " + chosenIndex);
}
return chosenIndex;
}
}
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