1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 7188093 8000176
27 * @summary Tests each of the 3 possible methods for rendering an upscaled
28 * image via rendering hints for default, xrender and opengl pipelines.
29 *
30 * @author Vadim.Pakhnushev@oracle.com
31 * @run main/othervm -Dsun.java2d.xrender=false InterpolationQualityTest
32 * @run main/othervm -Dsun.java2d.xrender=True InterpolationQualityTest
33 * @run main/othervm -Dsun.java2d.opengl=True InterpolationQualityTest
34 * @run main/othervm -Dsun.java2d.d3d=false InterpolationQualityTest
35 * @run main/othervm -Dsun.java2d.d3d=True InterpolationQualityTest
36 */
37
38 import java.awt.*;
39 import java.awt.image.*;
40 import java.io.File;
41 import java.io.IOException;
42 import javax.imageio.ImageIO;
43
44 public class InterpolationQualityTest {
45
46 private static final int testSize = 4, scaleFactor = 20, tolerance = 3;
47 private static final int sw = testSize * scaleFactor;
48 private static final int sh = testSize * scaleFactor;
49
50 private Image testImage;
51 private VolatileImage vImg;
52
53 public InterpolationQualityTest() {
54 testImage = createTestImage();
55 }
56
57 private Image createTestImage() {
58 BufferedImage bi = new BufferedImage(testSize, testSize, BufferedImage.TYPE_INT_ARGB);
59 Graphics2D g = bi.createGraphics();
60 g.setColor(Color.BLACK);
61 g.fillRect(0, 0, testSize, testSize);
62 for (int i = 0; i < testSize; i++) {
63 bi.setRGB(i, i, Color.WHITE.getRGB());
64 }
65 return bi;
66 }
67
68 private BufferedImage createReferenceImage(Object hint) {
69 BufferedImage bi = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_ARGB);
70 Graphics2D g2d = bi.createGraphics();
71 drawImage(g2d, hint);
72 return bi;
73 }
74
75 private void drawImage(Graphics2D g2d, Object hint) {
76 g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, hint);
77 g2d.drawImage(testImage, 0, 0, sw, sh, null);
78 }
79
80 private GraphicsConfiguration getDefaultGC() {
81 return GraphicsEnvironment.getLocalGraphicsEnvironment().
82 getDefaultScreenDevice().getDefaultConfiguration();
83 }
84
85 private void createVImg() {
86 vImg = getDefaultGC().createCompatibleVolatileImage(sw, sh);
87 }
88
89 private void renderOffscreen(Object hint) {
90 Graphics2D g = vImg.createGraphics();
91 drawImage(g, hint);
92 g.dispose();
93 }
94
95 private BufferedImage renderImage(Object hint) {
96 BufferedImage snapshot;
97 createVImg();
98 renderOffscreen(hint);
99
100 do {
101 int status = vImg.validate(getDefaultGC());
102 if (status != VolatileImage.IMAGE_OK) {
103 if (status == VolatileImage.IMAGE_INCOMPATIBLE) {
104 createVImg();
105 }
106 renderOffscreen(hint);
107 }
108 snapshot = vImg.getSnapshot();
109 } while (vImg.contentsLost());
110 vImg.flush();
111 return snapshot;
112 }
113
114 private boolean compareComponent(int comp1, int comp2) {
115 return Math.abs(comp1 - comp2) <= tolerance;
116 }
117
118 private boolean compareRGB(int rgb1, int rgb2) {
119 Color col1 = new Color(rgb1);
120 Color col2 = new Color(rgb2);
121 return compareComponent(col1.getRed(), col2.getRed()) &&
122 compareComponent(col1.getBlue(), col2.getBlue()) &&
123 compareComponent(col1.getGreen(), col2.getGreen()) &&
124 compareComponent(col1.getAlpha(), col2.getAlpha());
125 }
126
127 private boolean compareImages(BufferedImage img, BufferedImage ref, String imgName) {
128 for (int y = 0; y < ref.getHeight(); y++) {
129 for (int x = 0; x < ref.getWidth(); x++) {
130 if (!compareRGB(ref.getRGB(x, y), img.getRGB(x, y))) {
131 System.out.println(imgName + ".getRGB(" + x + ", " + y + ") = "
132 + new Color(img.getRGB(x, y)) + " != "
133 + new Color(ref.getRGB(x, y)));
134 return false;
135 }
136 }
137 }
138 return true;
139 }
140
141 private boolean test(Object hint) {
142 BufferedImage refImage = createReferenceImage(hint);
143 BufferedImage resImage = renderImage(hint);
144
145 boolean passed = compareImages(resImage, refImage, "resImage");
146 System.out.println(getHintName(hint) + (passed ? " passed." : " failed."));
147 if (!passed) {
148 dumpImage(refImage, "out_" + getHintName(hint) + "_ref.png");
149 dumpImage(resImage, "out_" + getHintName(hint) + ".png");
150 }
151 return passed;
152 }
153
154 public void test() {
155 boolean passed = true;
156 passed &= test(RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
157 passed &= test(RenderingHints.VALUE_INTERPOLATION_BILINEAR);
158 passed &= test(RenderingHints.VALUE_INTERPOLATION_BICUBIC);
159 if (passed) {
160 System.out.println("Test PASSED.");
161 } else {
162 throw new RuntimeException("Test FAILED.");
163 }
164 }
165
166 private String getHintName(Object hint) {
167 if (hint == RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR) {
168 return "nearest";
169 }
170 else if (hint == RenderingHints.VALUE_INTERPOLATION_BILINEAR) {
171 return "bilinear";
172 }
173 else if (hint == RenderingHints.VALUE_INTERPOLATION_BICUBIC) {
174 return "bicubic";
175 }
176 else {
177 return "null";
178 }
179 }
180
181 private void dumpImage(BufferedImage bi, String name) {
182 try {
183 ImageIO.write(bi, "PNG", new File(name));
184 } catch (IOException ex) {
185 }
186 }
187
188 public static void main(String[] argv) {
189 InterpolationQualityTest test = new InterpolationQualityTest();
190 test.test();
191 }
192 }