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/*
* Copyright (c) 2014, 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.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.VolatileImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import static java.awt.Transparency.TRANSLUCENT;
import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR;
import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR_PRE;
import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
/**
* @test
* @key headful
* @bug 8017626
* @summary Tests drawing transparent volatile image to transparent BI.
* Results of the blit compatibleImage to transparent BI used for
* comparison.
* @author Sergey Bylokhov
*/
public final class IncorrectAlphaSurface2SW {
private static final int[] SCALES = {1, 2, 4, 8};
private static final int[] SIZES = {1, 2, 3, 127, 128, 254, 255, 256};
private static final int[] dstTypes = {TYPE_INT_ARGB, TYPE_INT_ARGB_PRE,
TYPE_4BYTE_ABGR, TYPE_4BYTE_ABGR_PRE};
private static final int[] srcTypes = {TRANSLUCENT};
public static void main(final String[] args) throws IOException {
GraphicsEnvironment ge = GraphicsEnvironment
.getLocalGraphicsEnvironment();
GraphicsConfiguration gc = ge.getDefaultScreenDevice()
.getDefaultConfiguration();
BufferedImage destVI;
BufferedImage destBI;
BufferedImage sourceBI;
VolatileImage sourceVI;
for (final int s : SIZES) {
for (final int srcType : srcTypes) {
for (final int dstType : dstTypes) {
for (final int scale : SCALES) {
int sw = s * scale;
destVI = new BufferedImage(sw, sw, dstType);
destBI = new BufferedImage(sw, sw, dstType);
sourceBI = gc.createCompatibleImage(sw, sw, srcType);
sourceVI = gc.createCompatibleVolatileImage(s, s, srcType);
// draw to dest BI using compatible image
fill(sourceBI, s);
Graphics2D big = destBI.createGraphics();
big.setComposite(AlphaComposite.Src);
big.drawImage(sourceBI, 0, 0, sw, sw, null);
big.dispose();
// draw to dest BI using compatible image
fill(sourceVI, s);
drawVItoBI(gc, destVI, sourceVI);
validate(destVI, destBI);
sourceVI.flush();
}
}
}
}
System.out.println("Test PASSED");
}
private static void drawVItoBI(GraphicsConfiguration gc,
BufferedImage bi, VolatileImage vi) {
while (true) {
vi.validate(gc);
fill(vi, vi.getHeight());
if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
try {
Thread.sleep(100);
} catch (final InterruptedException ignored) {
}
continue;
}
Graphics2D big = bi.createGraphics();
big.setComposite(AlphaComposite.Src);
big.drawImage(vi, 0, 0, bi.getWidth(), bi.getHeight(), null);
big.dispose();
if (vi.contentsLost()) {
try {
Thread.sleep(100);
} catch (final InterruptedException ignored) {
}
continue;
}
break;
}
}
private static void validate(BufferedImage bi, BufferedImage gold)
throws IOException {
for (int x = 0; x < bi.getWidth(); ++x) {
for (int y = 0; y < bi.getHeight(); ++y) {
if (gold.getRGB(x, y) != bi.getRGB(x, y)) {
System.err.println("Expected color = " + gold.getRGB(x, y));
System.err.println("Actual color = " + bi.getRGB(x, y));
ImageIO.write(gold, "png", new File("gold.png"));
ImageIO.write(bi, "png", new File("bi.png"));
throw new RuntimeException("Test failed.");
}
}
}
}
/**
* Fills the whole image using different alpha for each row.
*
* @param image to fill
*/
private static void fill(final Image image, final int size) {
Graphics2D graphics = (Graphics2D) image.getGraphics();
graphics.setComposite(AlphaComposite.Src);
graphics.setColor(Color.GREEN);
graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
int row = image.getHeight(null) / size;
for (int i = 0; i < size; ++i) {
graphics.setColor(new Color(23, 127, 189, i));
graphics.fillRect(0, i * row, image.getWidth(null), row);
}
graphics.dispose();
}
}
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