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8267116: Lanai: Incorrect AlphaComposite for VolatileImage graphics
Reviewed-by: serb, aghaisas
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Alexey Ushakov authored and aghaisas committed May 18, 2021
1 parent cd1c17c commit 3e97b07a68cd3f9da78cbf98b574977185bc34e2
@@ -152,7 +152,8 @@ - (NSPointerArray * ) getSubStates:(NSString *)vertexShaderId fragmentShader:(NS
if ((composite != nil && FLT_LT([composite getExtraAlpha], 1.0f))) {
subIndex |= 1 << 6;
}
int index = compositeRule*64 + subIndex;

int index = compositeRule*128 + subIndex;

NSPointerArray * subStates = [self getSubStates:vertexShaderId fragmentShader:fragmentShaderId];

@@ -0,0 +1,74 @@
/*
* 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);
}
}

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