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4760025: sRGB conversions to and from CIE XYZ incorrect

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Reviewed-by: prr, aivanov
This commit is contained in:
Sergey Bylokhov 2024-01-14 23:05:47 +00:00
parent 71d9a83dec
commit bdee968e3e
1 changed files with 50 additions and 0 deletions
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test/jdk/java/awt/color/ICC_ColorSpace/SimpleSRGBToFromCIEXYZ.java Normal file
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/*
* Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
* Copyright (c) 2024, 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.color.ColorSpace;
import java.util.Arrays;
/**
* @test
* @bug 4760025
* @summary Verifies sRGB conversions to and from CIE XYZ
*/
public final class SimpleSRGBToFromCIEXYZ {
public static void main(String[] args) {
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
for (float g : new float[]{1.0f, 0.8f, 0.6f}) {
float[] rgb = {0, g, 0};
float[] xyz = cs.toCIEXYZ(rgb);
float[] inv = cs.fromCIEXYZ(xyz);
if (inv[0] != 0 || Math.abs(inv[1] - g) > 0.0001f || inv[2] != 0) {
System.err.println("Expected color:\t" + Arrays.toString(rgb));
System.err.println("XYZ color:\t\t" + Arrays.toString(xyz));
System.err.println("Actual color:\t" + Arrays.toString(inv));
throw new Error("Wrong color");
}
}
}
}