4760025: sRGB conversions to and from CIE XYZ incorrect

test/jdk/java/awt/color/ICC_ColorSpace/SimpleSRGBToFromCIEXYZ.java

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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.
+ */
+
+import java.awt.color.ColorSpace;
+
+/**
+ * @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" + toString(rgb));
+                System.err.println("XYZ color:\t\t" + toString(xyz));
+                System.err.println("Actual color:\t" + toString(inv));
+                throw new Error("Wrong color");
+            }
+        }
+    }
+
+    private static String toString(float[] color) {
+        StringBuilder buffer = new StringBuilder();
+        for (int i = 0; i < color.length; i++) {
+            if (i > 0) buffer.append(' ');
+            buffer.append(color[i]);
+        }
+        return buffer.toString();
+    }
+}