/*
* Copyright (c) 2012, 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.
*
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*/
/*
* @test
* @bug 7188093 8000176
* @summary Tests each of the 3 possible methods for rendering an upscaled
* image via rendering hints for default, xrender and opengl pipelines.
*
* @author Vadim.Pakhnushev@oracle.com
* @run main/othervm -Dsun.java2d.xrender=false InterpolationQualityTest
* @run main/othervm -Dsun.java2d.xrender=True InterpolationQualityTest
* @run main/othervm -Dsun.java2d.opengl=True InterpolationQualityTest
* @run main/othervm -Dsun.java2d.d3d=false InterpolationQualityTest
* @run main/othervm -Dsun.java2d.d3d=True InterpolationQualityTest
*/
import java.awt.*;
import java.awt.image.*;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class InterpolationQualityTest {
private static final int testSize = 4, scaleFactor = 20, tolerance = 3;
private static final int sw = testSize * scaleFactor;
private static final int sh = testSize * scaleFactor;
private Image testImage;
private VolatileImage vImg;
public InterpolationQualityTest() {
testImage = createTestImage();
}
private Image createTestImage() {
BufferedImage bi = new BufferedImage(testSize, testSize, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = bi.createGraphics();
g.setColor(Color.BLACK);
g.fillRect(0, 0, testSize, testSize);
for (int i = 0; i < testSize; i++) {
bi.setRGB(i, i, Color.WHITE.getRGB());
}
return bi;
}
private BufferedImage createReferenceImage(Object hint) {
BufferedImage bi = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = bi.createGraphics();
drawImage(g2d, hint);
return bi;
}
private void drawImage(Graphics2D g2d, Object hint) {
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, hint);
g2d.drawImage(testImage, 0, 0, sw, sh, null);
}
private GraphicsConfiguration getDefaultGC() {
return GraphicsEnvironment.getLocalGraphicsEnvironment().
getDefaultScreenDevice().getDefaultConfiguration();
}
private void createVImg() {
vImg = getDefaultGC().createCompatibleVolatileImage(sw, sh);
}
private void renderOffscreen(Object hint) {
Graphics2D g = vImg.createGraphics();
drawImage(g, hint);
g.dispose();
}
private BufferedImage renderImage(Object hint) {
BufferedImage snapshot;
createVImg();
renderOffscreen(hint);
do {
int status = vImg.validate(getDefaultGC());
if (status != VolatileImage.IMAGE_OK) {
if (status == VolatileImage.IMAGE_INCOMPATIBLE) {
createVImg();
}
renderOffscreen(hint);
}
snapshot = vImg.getSnapshot();
} while (vImg.contentsLost());
vImg.flush();
return snapshot;
}
private boolean compareComponent(int comp1, int comp2) {
return Math.abs(comp1 - comp2) <= tolerance;
}
private boolean compareRGB(int rgb1, int rgb2) {
Color col1 = new Color(rgb1);
Color col2 = new Color(rgb2);
return compareComponent(col1.getRed(), col2.getRed()) &&
compareComponent(col1.getBlue(), col2.getBlue()) &&
compareComponent(col1.getGreen(), col2.getGreen()) &&
compareComponent(col1.getAlpha(), col2.getAlpha());
}
private boolean compareImages(BufferedImage img, BufferedImage ref, String imgName) {
for (int y = 0; y < ref.getHeight(); y++) {
for (int x = 0; x < ref.getWidth(); x++) {
if (!compareRGB(ref.getRGB(x, y), img.getRGB(x, y))) {
System.out.println(imgName + ".getRGB(" + x + ", " + y + ") = "
+ new Color(img.getRGB(x, y)) + " != "
+ new Color(ref.getRGB(x, y)));
return false;
}
}
}
return true;
}
private boolean test(Object hint) {
BufferedImage refImage = createReferenceImage(hint);
BufferedImage resImage = renderImage(hint);
boolean passed = compareImages(resImage, refImage, "resImage");
System.out.println(getHintName(hint) + (passed ? " passed." : " failed."));
if (!passed) {
dumpImage(refImage, "out_" + getHintName(hint) + "_ref.png");
dumpImage(resImage, "out_" + getHintName(hint) + ".png");
}
return passed;
}
public void test() {
boolean passed = true;
passed &= test(RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
passed &= test(RenderingHints.VALUE_INTERPOLATION_BILINEAR);
passed &= test(RenderingHints.VALUE_INTERPOLATION_BICUBIC);
if (passed) {
System.out.println("Test PASSED.");
} else {
throw new RuntimeException("Test FAILED.");
}
}
private String getHintName(Object hint) {
if (hint == RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR) {
return "nearest";
}
else if (hint == RenderingHints.VALUE_INTERPOLATION_BILINEAR) {
return "bilinear";
}
else if (hint == RenderingHints.VALUE_INTERPOLATION_BICUBIC) {
return "bicubic";
}
else {
return "null";
}
}
private void dumpImage(BufferedImage bi, String name) {
try {
ImageIO.write(bi, "PNG", new File(name));
} catch (IOException ex) {
}
}
public static void main(String[] argv) {
InterpolationQualityTest test = new InterpolationQualityTest();
test.test();
}
}