OpaqueImageToSurfaceBlitTest.java revision 14851:980da45565c8 
1/*
2 * Copyright (c) 2007, 2016, 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 6764257
28 * @summary Tests that the alpha in opaque images doesn't affect result of alpha
29 * compositing
30 * @author Dmitri.Trembovetski@sun.com: area=Graphics
31 * @run main/othervm OpaqueImageToSurfaceBlitTest
32 * @run main/othervm -Dsun.java2d.noddraw=true OpaqueImageToSurfaceBlitTest
33 * @run main/othervm -Dsun.java2d.opengl=True OpaqueImageToSurfaceBlitTest
34 */
35
36import java.awt.AlphaComposite;
37import java.awt.Graphics2D;
38import java.awt.GraphicsConfiguration;
39import java.awt.GraphicsDevice;
40import java.awt.GraphicsEnvironment;
41import java.awt.image.BufferedImage;
42import java.awt.image.DataBufferInt;
43import java.awt.image.VolatileImage;
44
45public class OpaqueImageToSurfaceBlitTest {
46
47    public static void main(String[] args) {
48
49        GraphicsEnvironment ge =
50            GraphicsEnvironment.getLocalGraphicsEnvironment();
51        GraphicsDevice gd = ge.getDefaultScreenDevice();
52        GraphicsConfiguration gc = gd.getDefaultConfiguration();
53        VolatileImage vi = gc.createCompatibleVolatileImage(16, 16);
54        vi.validate(gc);
55
56        BufferedImage bi =
57            new BufferedImage(2, 2, BufferedImage.TYPE_INT_RGB);
58        int data[] = ((DataBufferInt)bi.getRaster().getDataBuffer()).getData();
59        data[0] = 0x0000007f;
60        data[1] = 0x0000007f;
61        data[2] = 0xff00007f;
62        data[3] = 0xff00007f;
63        Graphics2D g = vi.createGraphics();
64        g.setComposite(AlphaComposite.SrcOver.derive(0.999f));
65        g.drawImage(bi, 0, 0, null);
66
67        bi = vi.getSnapshot();
68        if (bi.getRGB(0, 0) != bi.getRGB(1, 1)) {
69            throw new RuntimeException("Test FAILED: color at 0x0 ="+
70                Integer.toHexString(bi.getRGB(0, 0))+" differs from 1x1 ="+
71                Integer.toHexString(bi.getRGB(1,1)));
72        }
73
74        System.out.println("Test PASSED.");
75    }
76}
77