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/*
* Copyright (c) 2013, 2016, 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.
*
* 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.awt.*;
import java.awt.image.*;
import java.util.*;
import javax.swing.*;
/**
* @test
* @key headful
* @bug 8024895
* @summary tests if changing extra alpha values are honored for transformed blits
* @author ceisserer
*/
public class EABlitTest extends Frame {
protected void test() {
BufferedImage srcImg = createSrcImage();
Image dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(20, 50);
//be over-cautious and render twice to avoid BI caching issues
renderToVI(srcImg, dstImg);
renderToVI(srcImg, dstImg);
BufferedImage validationImg = new BufferedImage(20, 50, BufferedImage.TYPE_INT_RGB);
Graphics2D valG = (Graphics2D) validationImg.getGraphics();
valG.drawImage(dstImg, 0, 0, null);
//Loop over all pixel, and count the different pixel values encountered.
TreeSet<Integer> colorCntSet = new TreeSet<>();
for (int x=0; x < validationImg.getWidth(); x++) {
for (int y=0; y < validationImg.getHeight(); y++) {
int rgb = validationImg.getRGB(x, y);
colorCntSet.add(rgb);
}
}
//Check if we encountered 3 different color values in total
if (colorCntSet.size() == 3) {
System.out.println("Passed!");
} else {
throw new RuntimeException("Test FAILED!");
}
}
protected void renderToVI(BufferedImage src, Image dst) {
Graphics2D g = (Graphics2D) dst.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, 50, 50);
g.rotate(0.5f);
g.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
g.setComposite(AlphaComposite.SrcOver.derive(1f));
g.drawImage(src, 10, 10, null);
g.setComposite(AlphaComposite.SrcOver.derive(0.5f));
g.drawImage(src, 20, 20, null);
}
protected BufferedImage createSrcImage() {
BufferedImage bi = new BufferedImage(10, 10, BufferedImage.TYPE_INT_RGB);
Graphics2D g = (Graphics2D) bi.getGraphics();
g.setColor(Color.YELLOW);
g.fillRect(0, 0, 10, 10);
return bi;
}
public static void main(String[] args) {
new EABlitTest().test();
}
}
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