85 lines
3.1 KiB
Java
85 lines
3.1 KiB
Java
/*
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* Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsEnvironment;
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import java.awt.Transparency;
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import java.awt.image.BufferedImage;
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import java.awt.image.VolatileImage;
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/**
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* @test
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* @key headful
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* @bug 7181438 8198613
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* @summary Verifies that we get correct alpha, when we draw opaque
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* BufferedImage to non opaque VolatileImage via intermediate opaque texture.
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* @author Sergey Bylokhov
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* @run main/othervm -Dsun.java2d.accthreshold=0 bug7181438
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*/
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public final class bug7181438 {
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private static final int SIZE = 500;
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public static void main(final String[] args) {
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final BufferedImage bi = createBufferedImage();
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final VolatileImage vi = createVolatileImage();
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final Graphics s2dVi = vi.getGraphics();
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//sw->texture->surface blit
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s2dVi.drawImage(bi, 0, 0, null);
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final BufferedImage results = vi.getSnapshot();
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for (int i = 0; i < SIZE; ++i) {
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for (int j = 0; j < SIZE; ++j) {
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//Image should be opaque: (black color and alpha = 255)
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if (results.getRGB(i, j) != 0xFF000000) {
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throw new RuntimeException("Failed: Wrong alpha");
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}
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}
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}
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System.out.println("Passed");
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}
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private static VolatileImage createVolatileImage() {
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final GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
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final GraphicsConfiguration gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
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return gc.createCompatibleVolatileImage(SIZE, SIZE,
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Transparency.TRANSLUCENT);
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}
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private static BufferedImage createBufferedImage() {
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final BufferedImage bi = new BufferedImage(SIZE, SIZE,
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BufferedImage.TYPE_INT_RGB);
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final Graphics bg = bi.getGraphics();
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//Black color and alpha = 0
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bg.setColor(new Color(0, 0, 0, 0));
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bg.fillRect(0, 0, SIZE, SIZE);
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bg.dispose();
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return bi;
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}
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}
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