I tried my fix on latest ubuntu14.04 and it seems to work for me, the
checkbox and button gets painted without any trails and without any
exception.
Also, regarding Clemens suggestion that "Transparency.OPAQUE is also
passed to the super constructor of XRWindowSurfaceData" it is observed
that the "transparancy" parameter is not used in the super constructor
so it shouldn't have any effect on this particular bug, maybe we can
remove the parameter from the super constructor for its lack of use.
Regards
Prasanta
On 2/10/2015 3:34 AM, Phil Race wrote:
I tried this on Ubuntu (13.04) with the test case in the bug (BTW
there should be a regression test
along with this fix) and I get a nasty exception (as below) and the
checkbox and button don't get painted.
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:196)
at sun.java2d.SunGraphics2D.copyImage(SunGraphics2D.java:3232)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3396)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3345)
at
java.awt.Component$BltBufferStrategy.showSubRegion(Component.java:4472)
at
java.awt.Component$BltSubRegionBufferStrategy.show(Component.java:4597)
at
javax.swing.BufferStrategyPaintManager.flushAccumulatedRegion(BufferStrategyPaintManager.java:371)
at
javax.swing.BufferStrategyPaintManager.endPaint(BufferStrategyPaintManager.java:333)
at javax.swing.RepaintManager.endPaint(RepaintManager.java:1387)
at javax.swing.JComponent.paint(JComponent.java:1041)
at
java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
at
sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:79)
at
sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:116)
at java.awt.Container.paint(Container.java:1997)
at java.awt.Window.paint(Window.java:3929)
at javax.swing.RepaintManager$4.run(RepaintManager.java:851)
at javax.swing.RepaintManager$4.run(RepaintManager.java:823)
at java.security.AccessController.doPrivileged(Native Method)
at
java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at
javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:823)
at
javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:798)
at
javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:747)
at javax.swing.RepaintManager.access$1300(RepaintManager.java:65)
at
javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1751)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:759)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:712)
at java.awt.EventQueue$3.run(EventQueue.java:706)
at java.security.AccessController.doPrivileged(Native Method)
at
java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:729)
at
java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:190)
at
java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:115)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:104)
at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:100)
at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:92)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:81)
-phil.
On 02/05/2015 03:31 AM, prasanta sadhukhan wrote:
Hi,
Please review a fix for this issue:
8039345 Strange behaviour of per-pixel translucency on linux
Bug description: https://bugs.openjdk.java.net/browse/JDK-8039345
webrev: http://cr.openjdk.java.net/~serb/prasanta/8039345/webrev.00/
Note: A wrong (PictStandardRGB24) picture format was used for
xrendering even for surface having alpha support thereby neglecting
the alpha transparency. It should be using PictStandardARGB32 or
TRANSLUCENT picture format for correct alpha support in xrendered
surface.
Regards
Prasanta
