[OpenJDK 2D-Dev] [9] RFR: JDK-8148127, , IllegalArgumentException thrown by JCK test api/java_awt/Component/FlipBufferStrategy/indexTGF_General in opengl pipeline

[prasanta sadhukhan]

Hi All,

Bug: https://bugs.openjdk.java.net/browse/JDK-8148127
webrev: http://cr.openjdk.java.net/~psadhukhan/8148127/webrev.00/
This is in continuation with JDK-8147077 
<https://bugs.openjdk.java.net/browse/JDK-8147077> issue which regresses 
the JCK test in xrender pipeline in linux

The same issue is seen on *opengl *pipeline in *windows*
whereby api/java_awt/Component/FlipBufferStrategy JCK test
was causing WGLGraphicsConfig.createBackBuffer to create (0,0) 
volatileimage
resulting in IAE in opengl pipeline.
The fix is to ensure createBackBuffer does not create 0 sized 
VolatileImage rather
it resize to (1,1) if it finds a 0 sized VolatileImage is requested.

Issue is not seen in mac opengl pipeline.

Regards
Prasanta