6996867: Garbage rendering of LCD text with SRC composite mode

Reviewed-by: igor, jgodinez

src/share/classes/sun/java2d/SurfaceData.java

@@ -644,7 +644,7 @@ public abstract class SurfaceData
                     sg2d.drawpipe = converter;
                     sg2d.fillpipe = converter;
                     sg2d.shapepipe = converter;
-                    if (sg2d.paintState > sg2d.PAINT_OPAQUECOLOR ||
+                    if (sg2d.paintState > sg2d.PAINT_ALPHACOLOR ||
                         sg2d.compositeState > sg2d.COMP_ISCOPY)
                     {
                         sg2d.textpipe = colorText;

test/java/awt/Graphics2D/DrawString/LCDTextSrcEa.java

+/*
+ * Copyright (c) 2010, 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.
+ */
+
+/**
+ * @test
+ * @bug 6996867
+ * @summary Render as LCD Text in SrcEa composite mode.
+ */
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.image.*;
+
+public class LCDTextSrcEa extends Component {
+
+    static int SZ=150;
+    BufferedImage target =
+        new BufferedImage(SZ, SZ, BufferedImage.TYPE_INT_RGB);
+
+    public static void main(String args[]) {
+        Frame f = new Frame("LCD Text SrcEa Test");
+        f.addWindowListener(new WindowAdapter() {
+            @Override
+            public void windowClosing(WindowEvent e) {
+                System.exit(0);
+            }
+        });
+        LCDTextSrcEa td = new LCDTextSrcEa();
+        f.add("Center", td);
+        f.pack();
+        f.setVisible(true);
+    }
+
+    public Dimension getPreferredSize() {
+        return new Dimension(SZ,SZ);
+    }
+
+    public void paint(Graphics gx) {
+
+        Graphics2D g2d = (Graphics2D) target.getGraphics();
+        g2d.setColor(Color.white);
+        g2d.fillRect(0, 0, getWidth(), getHeight());
+
+        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 0.01f));
+        g2d.setRenderingHint(
+                RenderingHints.KEY_TEXT_ANTIALIASING,
+                RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR);
+        g2d.setRenderingHint(
+               RenderingHints.KEY_ANTIALIASING,
+               RenderingHints.VALUE_ANTIALIAS_ON);
+
+        g2d.setColor(Color.black);
+        g2d.drawString("Some sample text.", 10, 20);
+        gx.drawImage(target, 0, 0, null);
+        boolean nongrey = false;
+        //Test BI: should be some non-greyscale color
+        for (int px=0;px<SZ;px++) {
+            for (int py=0;py<SZ;py++) {
+                int rgb = target.getRGB(px, py);
+                int r = (rgb & 0xff0000) >> 16;
+                int g = (rgb & 0x00ff00) >> 8;
+                int b = (rgb & 0x0000ff);
+                if (r != g || r !=b || g != b) {
+                     nongrey=true;
+                     break;
+                }
+            }
+        }
+        if (!nongrey) {
+            throw new RuntimeException("No LCD text found");
+        }
+    }
+}