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6996867: Garbage rendering of LCD text with SRC composite mode

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Reviewed-by: igor, jgodinez
This commit is contained in:
Phil Race 2010-12-22 13:49:23 -08:00
parent decbe031fc
commit 01d8aee41b
2 changed files with 94 additions and 1 deletions
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2
jdk/src/share/classes/sun/java2d/SurfaceData.java
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@ -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;

93
jdk/test/java/awt/Graphics2D/DrawString/LCDTextSrcEa.java Normal file
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@ -0,0 +1,93 @@
/*
* 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");
}
}
}