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/*
* Copyright 2004-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package sun.java2d.opengl;
import java.awt.BufferCapabilities;
import static java.awt.BufferCapabilities.FlipContents.*;
import java.awt.Component;
import java.awt.GraphicsConfiguration;
import java.awt.Transparency;
import java.awt.image.ColorModel;
import sun.awt.image.SunVolatileImage;
import sun.awt.image.VolatileSurfaceManager;
import sun.awt.windows.WComponentPeer;
import sun.java2d.SurfaceData;
import static sun.java2d.opengl.OGLContext.OGLContextCaps.*;
import static sun.java2d.pipe.hw.AccelSurface.*;
import sun.java2d.pipe.hw.ExtendedBufferCapabilities;
import static sun.java2d.pipe.hw.ExtendedBufferCapabilities.VSyncType.*;
public class WGLVolatileSurfaceManager
extends VolatileSurfaceManager
{
private boolean accelerationEnabled;
public WGLVolatileSurfaceManager(SunVolatileImage vImg, Object context) {
super(vImg, context);
/*
* We will attempt to accelerate this image only under the
* following conditions:
* - the image is opaque OR
* - the image is translucent AND
* - the GraphicsConfig supports the FBO extension OR
* - the GraphicsConfig has a stored alpha channel
*/
int transparency = vImg.getTransparency();
WGLGraphicsConfig gc = (WGLGraphicsConfig)vImg.getGraphicsConfig();
accelerationEnabled =
(transparency == Transparency.OPAQUE) ||
((transparency == Transparency.TRANSLUCENT) &&
(gc.isCapPresent(CAPS_EXT_FBOBJECT) ||
gc.isCapPresent(CAPS_STORED_ALPHA)));
}
protected boolean isAccelerationEnabled() {
return accelerationEnabled;
}
/**
* Create a pbuffer-based SurfaceData object (or init the backbuffer
* of an existing window if this is a double buffered GraphicsConfig).
*/
protected SurfaceData initAcceleratedSurface() {
SurfaceData sData;
Component comp = vImg.getComponent();
WComponentPeer peer =
(comp != null) ? (WComponentPeer)comp.getPeer() : null;
try {
boolean createVSynced = false;
boolean forceback = false;
if (context instanceof Boolean) {
forceback = ((Boolean)context).booleanValue();
if (forceback) {
BufferCapabilities caps = peer.getBackBufferCaps();
if (caps instanceof ExtendedBufferCapabilities) {
ExtendedBufferCapabilities ebc =
(ExtendedBufferCapabilities)caps;
if (ebc.getVSync() == VSYNC_ON &&
ebc.getFlipContents() == COPIED)
{
createVSynced = true;
forceback = false;
}
}
}
}
if (forceback) {
// peer must be non-null in this case
sData = WGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
} else {
WGLGraphicsConfig gc =
(WGLGraphicsConfig)vImg.getGraphicsConfig();
ColorModel cm = gc.getColorModel(vImg.getTransparency());
int type = vImg.getForcedAccelSurfaceType();
// if acceleration type is forced (type != UNDEFINED) then
// use the forced type, otherwise choose one based on caps
if (type == OGLSurfaceData.UNDEFINED) {
type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
}
if (createVSynced) {
sData = WGLSurfaceData.createData(peer, vImg, type);
} else {
sData = WGLSurfaceData.createData(gc,
vImg.getWidth(),
vImg.getHeight(),
cm, vImg, type);
}
}
} catch (NullPointerException ex) {
sData = null;
} catch (OutOfMemoryError er) {
sData = null;
}
return sData;
}
@Override
protected boolean isConfigValid(GraphicsConfiguration gc) {
return ((gc == null) || (gc == vImg.getGraphicsConfig()));
}
@Override
public void initContents() {
if (vImg.getForcedAccelSurfaceType() != OGLSurfaceData.TEXTURE) {
super.initContents();
}
}
}
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