76 lines
2.8 KiB
Java
76 lines
2.8 KiB
Java
/*
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* Copyright (c) 2007, 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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/*
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* @test
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* @key headful
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* @bug 6764257 8198613
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* @summary Tests that the alpha in opaque images doesn't affect result of alpha
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* compositing
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* @author Dmitri.Trembovetski@sun.com: area=Graphics
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* @run main/othervm OpaqueImageToSurfaceBlitTest
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* @run main/othervm -Dsun.java2d.noddraw=true OpaqueImageToSurfaceBlitTest
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*/
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import java.awt.AlphaComposite;
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import java.awt.Graphics2D;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsDevice;
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import java.awt.GraphicsEnvironment;
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import java.awt.image.BufferedImage;
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import java.awt.image.DataBufferInt;
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import java.awt.image.VolatileImage;
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public class OpaqueImageToSurfaceBlitTest {
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public static void main(String[] args) {
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GraphicsEnvironment ge =
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GraphicsEnvironment.getLocalGraphicsEnvironment();
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GraphicsDevice gd = ge.getDefaultScreenDevice();
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GraphicsConfiguration gc = gd.getDefaultConfiguration();
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VolatileImage vi = gc.createCompatibleVolatileImage(16, 16);
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vi.validate(gc);
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BufferedImage bi =
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new BufferedImage(2, 2, BufferedImage.TYPE_INT_RGB);
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int data[] = ((DataBufferInt)bi.getRaster().getDataBuffer()).getData();
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data[0] = 0x0000007f;
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data[1] = 0x0000007f;
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data[2] = 0xff00007f;
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data[3] = 0xff00007f;
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Graphics2D g = vi.createGraphics();
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g.setComposite(AlphaComposite.SrcOver.derive(0.999f));
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g.drawImage(bi, 0, 0, null);
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bi = vi.getSnapshot();
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if (bi.getRGB(0, 0) != bi.getRGB(1, 1)) {
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throw new RuntimeException("Test FAILED: color at 0x0 ="+
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Integer.toHexString(bi.getRGB(0, 0))+" differs from 1x1 ="+
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Integer.toHexString(bi.getRGB(1,1)));
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}
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System.out.println("Test PASSED.");
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}
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}
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