/*
* Copyright 2007-2008 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 ae.sun.java2d.opengl;
import ae.java.awt.image.AffineTransformOp;
import ae.java.awt.image.BufferedImage;
import ae.java.awt.image.BufferedImageOp;
import ae.java.awt.image.ConvolveOp;
import ae.java.awt.image.LookupOp;
import ae.java.awt.image.RescaleOp;
import ae.sun.java2d.SunGraphics2D;
import ae.sun.java2d.SurfaceData;
import ae.sun.java2d.loops.CompositeType;
import ae.sun.java2d.pipe.BufferedBufImgOps;
import static ae.sun.java2d.opengl.OGLContext.OGLContextCaps.*;
class OGLBufImgOps extends BufferedBufImgOps {
/**
* This method is called from OGLDrawImage.transformImage() only. It
* validates the provided BufferedImageOp to determine whether the op
* is one that can be accelerated by the OGL pipeline. If the operation
* cannot be completed for any reason, this method returns false;
* otherwise, the given BufferedImage is rendered to the destination
* using the provided BufferedImageOp and this method returns true.
*/
static boolean renderImageWithOp(SunGraphics2D sg, BufferedImage img,
BufferedImageOp biop, int x, int y)
{
// Validate the provided BufferedImage (make sure it is one that
// is supported, and that its properties are acceleratable)
if (biop instanceof ConvolveOp) {
if (!isConvolveOpValid((ConvolveOp)biop)) {
return false;
}
} else if (biop instanceof RescaleOp) {
if (!isRescaleOpValid((RescaleOp)biop, img)) {
return false;
}
} else if (biop instanceof LookupOp) {
if (!isLookupOpValid((LookupOp)biop, img)) {
return false;
}
} else {
// No acceleration for other BufferedImageOps (yet)
return false;
}
SurfaceData dstData = sg.surfaceData;
if (!(dstData instanceof OGLSurfaceData) ||
(sg.interpolationType == AffineTransformOp.TYPE_BICUBIC) ||
(sg.compositeState > SunGraphics2D.COMP_ALPHA))
{
return false;
}
SurfaceData srcData =
dstData.getSourceSurfaceData(img, sg.TRANSFORM_ISIDENT,
CompositeType.SrcOver, null);
if (!(srcData instanceof OGLSurfaceData)) {
// REMIND: this hack tries to ensure that we have a cached texture
srcData =
dstData.getSourceSurfaceData(img, sg.TRANSFORM_ISIDENT,
CompositeType.SrcOver, null);
if (!(srcData instanceof OGLSurfaceData)) {
return false;
}
}
// Verify that the source surface is actually a texture and
// that the operation is supported
OGLSurfaceData oglSrc = (OGLSurfaceData)srcData;
OGLGraphicsConfig gc = oglSrc.getOGLGraphicsConfig();
if (oglSrc.getType() != OGLSurfaceData.TEXTURE ||
!gc.isCapPresent(CAPS_EXT_BIOP_SHADER))
{
return false;
}
int sw = img.getWidth();
int sh = img.getHeight();
OGLBlitLoops.IsoBlit(srcData, dstData,
img, biop,
sg.composite, sg.getCompClip(),
sg.transform, sg.interpolationType,
0, 0, sw, sh,
x, y, x+sw, y+sh,
true);
return true;
}
}