/*
* Copyright (c) 2013, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package sun.java2d.opengl;
import java.awt.Color;
import java.awt.Transparency;
import sun.java2d.SurfaceData;
import sun.java2d.SurfaceDataProxy;
import sun.java2d.loops.SurfaceType;
import sun.java2d.loops.CompositeType;
/**
* The proxy class contains the logic for when to replace a
* SurfaceData with a cached OGL Texture and the code to create
* the accelerated surfaces.
*/
public class OGLSurfaceDataProxy extends SurfaceDataProxy {
public static SurfaceDataProxy createProxy(SurfaceData srcData,
OGLGraphicsConfig dstConfig)
{
if (srcData instanceof OGLSurfaceData) {
// srcData must be a VolatileImage which either matches
// our pixel format or not - either way we do not cache it...
return UNCACHED;
}
return new OGLSurfaceDataProxy(dstConfig, srcData.getTransparency());
}
OGLGraphicsConfig oglgc;
int transparency;
public OGLSurfaceDataProxy(OGLGraphicsConfig oglgc, int transparency) {
this.oglgc = oglgc;
this.transparency = transparency;
}
@Override
public SurfaceData validateSurfaceData(SurfaceData srcData,
SurfaceData cachedData,
int w, int h)
{
if (cachedData == null) {
cachedData = oglgc.createManagedSurface(w, h, transparency);
}
return cachedData;
}
@Override
public boolean isSupportedOperation(SurfaceData srcData,
int txtype,
CompositeType comp,
Color bgColor)
{
return comp.isDerivedFrom(CompositeType.AnyAlpha) &&
(bgColor == null || transparency == Transparency.OPAQUE);
}
}