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8297681: Unnecessary color conversion during 4BYTE_ABGR_PRE to INT_AR…
…GB_PRE blit Reviewed-by: prr
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/* | ||
* Copyright Amazon.com Inc. 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. | ||
*/ | ||
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import java.awt.AlphaComposite; | ||
import java.awt.Graphics2D; | ||
import java.awt.image.BufferedImage; | ||
import java.util.Arrays; | ||
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import static java.awt.image.BufferedImage.TYPE_3BYTE_BGR; | ||
import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR; | ||
import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR_PRE; | ||
import static java.awt.image.BufferedImage.TYPE_INT_ARGB; | ||
import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE; | ||
import static java.awt.image.BufferedImage.TYPE_INT_BGR; | ||
import static java.awt.image.BufferedImage.TYPE_INT_RGB; | ||
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/** | ||
* @test | ||
* @bug 8297681 | ||
* @summary The blit TYPE_4BYTE_ABGR_PRE to TYPE_INT_ARGB_PRE should be "direct" | ||
*/ | ||
public final class SkipConversionIfPossible { | ||
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private static final int SIZE = 256; | ||
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public static void main(String[] args) { | ||
// Initial bug was in the TYPE_4BYTE_ABGR_PRE to TYPE_INT_ARGB_PRE blit. | ||
// But I checked other blits just in case. | ||
test(new int[]{TYPE_INT_ARGB_PRE, TYPE_4BYTE_ABGR_PRE}); | ||
test(new int[]{TYPE_INT_RGB, TYPE_INT_BGR, TYPE_3BYTE_BGR}); | ||
test(new int[]{TYPE_INT_ARGB, TYPE_4BYTE_ABGR}); | ||
} | ||
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private static void test(int[] types) { | ||
for (int src : types) { | ||
for (int dst : types) { | ||
render(src, dst); | ||
} | ||
} | ||
} | ||
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private static void render(int src, int dst) { | ||
BufferedImage from = new BufferedImage(SIZE, SIZE, src); | ||
for (int a = 0; a < SIZE; ++a) { | ||
for (int c = 0; c < SIZE; ++c) { | ||
// The data is intentionally broken for the argb_pre format, but | ||
// it should be stored as is in dst if no conversion was done. | ||
from.getRaster().setPixel(c, a, new int[]{c, c << 24, -c, a}); | ||
} | ||
} | ||
BufferedImage to = new BufferedImage(SIZE, SIZE, dst); | ||
Graphics2D g = to.createGraphics(); | ||
g.setComposite(AlphaComposite.Src); | ||
g.drawImage(from, 0, 0, null); | ||
g.dispose(); | ||
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for (int a = 0; a < SIZE; ++a) { | ||
for (int c = 0; c < SIZE; ++c) { | ||
int[] pixel1 = from.getRaster().getPixel(c, a, (int[]) null); | ||
int[] pixel2 = to.getRaster().getPixel(c, a, (int[]) null); | ||
if (!Arrays.equals(pixel1, pixel2)) { | ||
System.err.println(Arrays.toString(pixel1)); | ||
System.err.println(Arrays.toString(pixel2)); | ||
throw new RuntimeException(); | ||
} | ||
} | ||
} | ||
} | ||
} |
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Review
Issues
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/backport jdk17u-dev
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@mrserb the backport was successfully created on the branch mrserb-backport-8ffed34e in my personal fork of openjdk/jdk17u-dev. To create a pull request with this backport targeting openjdk/jdk17u-dev:master, just click the following link:
➡️ Create pull request
The title of the pull request is automatically filled in correctly and below you find a suggestion for the pull request body:
If you need to update the source branch of the pull then run the following commands in a local clone of your personal fork of openjdk/jdk17u-dev:
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/backport jdk11u-dev
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@mrserb the backport was successfully created on the branch mrserb-backport-8ffed34e in my personal fork of openjdk/jdk11u-dev. To create a pull request with this backport targeting openjdk/jdk11u-dev:master, just click the following link:
➡️ Create pull request
The title of the pull request is automatically filled in correctly and below you find a suggestion for the pull request body:
If you need to update the source branch of the pull then run the following commands in a local clone of your personal fork of openjdk/jdk11u-dev: