1 /*
2 * Copyright (c) 2012, 2020, 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 * @key headful
27 * @bug 7188093 8000176 8198613
28 * @summary Tests each of the 3 possible methods for rendering an upscaled
29 * image via rendering hints for default, xrender and opengl pipelines.
30 *
31 * @author Vadim.Pakhnushev@oracle.com
32 * @run main/othervm -Dsun.java2d.uiScale=1 -Dsun.java2d.xrender=false InterpolationQualityTest
33 * @run main/othervm -Dsun.java2d.uiScale=1 -Dsun.java2d.xrender=True InterpolationQualityTest
34 * @run main/othervm -Dsun.java2d.uiScale=1 -Dsun.java2d.d3d=false InterpolationQualityTest
35 * @run main/othervm -Dsun.java2d.uiScale=1 -Dsun.java2d.d3d=True InterpolationQualityTest
36 * @run main/othervm -Dsun.java2d.uiScale=1 InterpolationQualityTest
37 */
38
39 import java.awt.*;
40 import java.awt.image.*;
41 import java.io.File;
42 import java.io.IOException;
43 import javax.imageio.ImageIO;
44
45 public class InterpolationQualityTest {
46
47 private static final int testSize = 4, scaleFactor = 20, tolerance = 3;
48 private static final int sw = testSize * scaleFactor;
49 private static final int sh = testSize * scaleFactor;
50
51 private Image testImage;
52 private VolatileImage vImg;
53
54 public InterpolationQualityTest() {
55 testImage = createTestImage();
56 }
57
58 private Image createTestImage() {
59 BufferedImage bi = new BufferedImage(testSize, testSize, BufferedImage.TYPE_INT_ARGB);
60 Graphics2D g = bi.createGraphics();
61 g.setColor(Color.BLACK);
62 g.fillRect(0, 0, testSize, testSize);
63 for (int i = 0; i < testSize; i++) {
64 bi.setRGB(i, i, Color.WHITE.getRGB());
65 }
66 return bi;
67 }
68
69 private BufferedImage createReferenceImage(Object hint) {
70 BufferedImage bi = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_ARGB);
71 Graphics2D g2d = bi.createGraphics();
72 drawImage(g2d, hint);
73 return bi;
74 }
75
76 private void drawImage(Graphics2D g2d, Object hint) {
77 g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, hint);
78 g2d.drawImage(testImage, 0, 0, sw, sh, null);
79 }
80
81 private GraphicsConfiguration getDefaultGC() {
82 return GraphicsEnvironment.getLocalGraphicsEnvironment().
83 getDefaultScreenDevice().getDefaultConfiguration();
84 }
85
86 private void createVImg() {
87 vImg = getDefaultGC().createCompatibleVolatileImage(sw, sh);
88 }
89
90 private void renderOffscreen(Object hint) {
91 Graphics2D g = vImg.createGraphics();
92 drawImage(g, hint);
93 g.dispose();
94 }
95
96 private BufferedImage renderImage(Object hint) {
97 BufferedImage snapshot;
98 createVImg();
99 renderOffscreen(hint);
100
101 do {
102 int status = vImg.validate(getDefaultGC());
103 if (status != VolatileImage.IMAGE_OK) {
104 if (status == VolatileImage.IMAGE_INCOMPATIBLE) {
105 createVImg();
106 }
107 renderOffscreen(hint);
108 }
109 snapshot = vImg.getSnapshot();
110 } while (vImg.contentsLost());
111 vImg.flush();
112 return snapshot;
113 }
114
115 private boolean compareComponent(int comp1, int comp2) {
116 return Math.abs(comp1 - comp2) <= tolerance;
117 }
118
119 private boolean compareRGB(int rgb1, int rgb2) {
120 Color col1 = new Color(rgb1);
121 Color col2 = new Color(rgb2);
122 return compareComponent(col1.getRed(), col2.getRed()) &&
123 compareComponent(col1.getBlue(), col2.getBlue()) &&
124 compareComponent(col1.getGreen(), col2.getGreen()) &&
125 compareComponent(col1.getAlpha(), col2.getAlpha());
126 }
127
128 private boolean compareImages(BufferedImage img, BufferedImage ref, String imgName) {
129 for (int y = 0; y < ref.getHeight(); y++) {
130 for (int x = 0; x < ref.getWidth(); x++) {
131 if (!compareRGB(ref.getRGB(x, y), img.getRGB(x, y))) {
132 System.out.println(imgName + ".getRGB(" + x + ", " + y + ") = "
133 + new Color(img.getRGB(x, y)) + " != "
134 + new Color(ref.getRGB(x, y)));
135 return false;
136 }
137 }
138 }
139 return true;
140 }
141
142 private boolean test(Object hint) {
143 BufferedImage refImage = createReferenceImage(hint);
144 BufferedImage resImage = renderImage(hint);
145
146 boolean passed = compareImages(resImage, refImage, "resImage");
147 System.out.println(getHintName(hint) + (passed ? " passed." : " failed."));
148 if (!passed) {
149 dumpImage(refImage, "out_" + getHintName(hint) + "_ref.png");
150 dumpImage(resImage, "out_" + getHintName(hint) + ".png");
151 }
152 return passed;
153 }
154
155 public void test() {
156 boolean passed = true;
157 passed &= test(RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
158 passed &= test(RenderingHints.VALUE_INTERPOLATION_BILINEAR);
159 passed &= test(RenderingHints.VALUE_INTERPOLATION_BICUBIC);
160 if (passed) {
161 System.out.println("Test PASSED.");
162 } else {
163 throw new RuntimeException("Test FAILED.");
164 }
165 }
166
167 private String getHintName(Object hint) {
168 if (hint == RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR) {
169 return "nearest";
170 }
171 else if (hint == RenderingHints.VALUE_INTERPOLATION_BILINEAR) {
172 return "bilinear";
173 }
174 else if (hint == RenderingHints.VALUE_INTERPOLATION_BICUBIC) {
175 return "bicubic";
176 }
177 else {
178 return "null";
179 }
180 }
181
182 private void dumpImage(BufferedImage bi, String name) {
183 try {
184 ImageIO.write(bi, "PNG", new File(name));
185 } catch (IOException ex) {
186 }
187 }
188
189 public static void main(String[] argv) {
190 InterpolationQualityTest test = new InterpolationQualityTest();
191 test.test();
192 }
193 }