| /* |
| * 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. |
| * |
| * 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.Color; |
| import java.awt.Graphics; |
| import java.awt.GraphicsConfiguration; |
| import java.awt.GraphicsEnvironment; |
| import java.awt.Transparency; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.VolatileImage; |
| |
| /** |
| * @test |
| * @bug 7181438 |
| * @summary Verifies that we get correct alpha, when we draw opaque |
| * BufferedImage to non opaque VolatileImage via intermediate opaque texture. |
| * @author Sergey Bylokhov |
| * @run main/othervm -Dsun.java2d.accthreshold=0 bug7181438 |
| */ |
| public final class bug7181438 { |
| |
| private static final int SIZE = 500; |
| |
| public static void main(final String[] args) { |
| |
| final BufferedImage bi = createBufferedImage(); |
| final VolatileImage vi = createVolatileImage(); |
| final Graphics s2dVi = vi.getGraphics(); |
| |
| //sw->texture->surface blit |
| s2dVi.drawImage(bi, 0, 0, null); |
| |
| final BufferedImage results = vi.getSnapshot(); |
| for (int i = 0; i < SIZE; ++i) { |
| for (int j = 0; j < SIZE; ++j) { |
| //Image should be opaque: (black color and alpha = 255) |
| if (results.getRGB(i, j) != 0xFF000000) { |
| throw new RuntimeException("Failed: Wrong alpha"); |
| } |
| } |
| } |
| System.out.println("Passed"); |
| } |
| |
| |
| private static VolatileImage createVolatileImage() { |
| final GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); |
| final GraphicsConfiguration gc = ge.getDefaultScreenDevice().getDefaultConfiguration(); |
| return gc.createCompatibleVolatileImage(SIZE, SIZE, |
| Transparency.TRANSLUCENT); |
| } |
| |
| private static BufferedImage createBufferedImage() { |
| final BufferedImage bi = new BufferedImage(SIZE, SIZE, |
| BufferedImage.TYPE_INT_RGB); |
| final Graphics bg = bi.getGraphics(); |
| //Black color and alpha = 0 |
| bg.setColor(new Color(0, 0, 0, 0)); |
| bg.fillRect(0, 0, SIZE, SIZE); |
| bg.dispose(); |
| return bi; |
| } |
| } |