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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/java/awt/image/VolatileImage/AlphaCompositeTest.java Normal file
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/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2021, JetBrains s.r.o.. 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.
*/
/**
* @test
* @key headful
* @bug 8267116
* @summary AlphaComposite for VolatileImage graphics
* @author Alexey Ushakov
* @run main AlphaCompositeTest
*/
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.VolatileImage;
import java.io.File;
import java.io.IOException;
public class AlphaCompositeTest {
public static void main(String[] args) throws IOException {
GraphicsConfiguration gc = GraphicsEnvironment.getLocalGraphicsEnvironment()
.getDefaultScreenDevice().getDefaultConfiguration();
VolatileImage vi = gc.createCompatibleVolatileImage(100, 100, Transparency.TRANSLUCENT);
BufferedImage gold = gc.createCompatibleImage(100, 100, Transparency.TRANSLUCENT);
render(gold.createGraphics());
BufferedImage snapshot = null;
Graphics2D g2 = vi.createGraphics();
do {
render(g2);
snapshot = vi.getSnapshot();
} while (vi.contentsLost());
for (int x = 0; x < gold.getWidth(); ++x) {
for (int y = 0; y < gold.getHeight(); ++y) {
if (gold.getRGB(x, y) != snapshot.getRGB(x, y)) {
ImageIO.write(gold, "png", new File("gold.png"));
ImageIO.write(snapshot, "png", new File("bi.png"));
throw new RuntimeException("Test failed.");
}
}
}
}
private static void render(Graphics2D g2) {
g2.setColor(Color.BLUE);
g2.fillRect(0, 0, 100, 100);
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 0.5f));
g2.setColor(Color.RED);
g2.fillRect(10, 10, 80, 80);
}
}