| /* |
| * Copyright (c) 2014, 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.AlphaComposite; |
| import java.awt.Color; |
| import java.awt.Graphics2D; |
| import java.awt.GraphicsConfiguration; |
| import java.awt.GraphicsDevice; |
| import java.awt.GraphicsEnvironment; |
| import java.awt.RenderingHints; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.DataBuffer; |
| import java.awt.image.DataBufferByte; |
| import java.awt.image.DataBufferInt; |
| import java.awt.image.DataBufferShort; |
| import java.awt.image.VolatileImage; |
| |
| import static java.awt.Transparency.TRANSLUCENT; |
| |
| /** |
| * @test |
| * @bug 8062164 |
| * @summary We should get correct alpha, when we draw to/from VolatileImage and |
| * bicubic interpolation is enabled |
| * @author Sergey Bylokhov |
| */ |
| public final class IncorrectAlphaConversionBicubic { |
| |
| private static final Color RGB = new Color(200, 255, 7, 123); |
| private static final int SIZE = 100; |
| |
| public static void main(final String[] args) { |
| final GraphicsEnvironment ge = |
| GraphicsEnvironment.getLocalGraphicsEnvironment(); |
| final GraphicsDevice gd = ge.getDefaultScreenDevice(); |
| final GraphicsConfiguration gc = gd.getDefaultConfiguration(); |
| final VolatileImage vi = |
| gc.createCompatibleVolatileImage(SIZE, SIZE, TRANSLUCENT); |
| final BufferedImage bi = makeUnmanagedBI(gc, TRANSLUCENT); |
| final int expected = bi.getRGB(2, 2); |
| |
| int attempt = 0; |
| BufferedImage snapshot; |
| while (true) { |
| if (++attempt > 10) { |
| throw new RuntimeException("Too many attempts: " + attempt); |
| } |
| vi.validate(gc); |
| final Graphics2D g2d = vi.createGraphics(); |
| g2d.setComposite(AlphaComposite.Src); |
| g2d.scale(2, 2); |
| g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, |
| RenderingHints.VALUE_INTERPOLATION_BICUBIC); |
| g2d.drawImage(bi, 0, 0, null); |
| g2d.dispose(); |
| |
| snapshot = vi.getSnapshot(); |
| if (vi.contentsLost()) { |
| continue; |
| } |
| break; |
| } |
| final int actual = snapshot.getRGB(2, 2); |
| if (actual != expected) { |
| System.err.println("Actual: " + Integer.toHexString(actual)); |
| System.err.println("Expected: " + Integer.toHexString(expected)); |
| throw new RuntimeException("Test failed"); |
| } |
| } |
| |
| private static BufferedImage makeUnmanagedBI(GraphicsConfiguration gc, |
| int type) { |
| BufferedImage img = gc.createCompatibleImage(SIZE, SIZE, type); |
| Graphics2D g2d = img.createGraphics(); |
| g2d.setColor(RGB); |
| g2d.fillRect(0, 0, SIZE, SIZE); |
| g2d.dispose(); |
| final DataBuffer db = img.getRaster().getDataBuffer(); |
| if (db instanceof DataBufferInt) { |
| ((DataBufferInt) db).getData(); |
| } else if (db instanceof DataBufferShort) { |
| ((DataBufferShort) db).getData(); |
| } else if (db instanceof DataBufferByte) { |
| ((DataBufferByte) db).getData(); |
| } else { |
| try { |
| img.setAccelerationPriority(0.0f); |
| } catch (final Throwable ignored) { |
| } |
| } |
| return img; |
| } |
| } |