[OpenJDK 2D-Dev] [9]: RFR JDK-8147077, , IllegalArgumentException thrown by api/java_awt/Component/FlipBufferStrategy/indexTGF_General

[prasanta sadhukhan]

Hi All,

Please review a JCK regression fix for JDK-8140530 
<https://bugs.openjdk.java.net/browse/JDK-8140530>

Bug: https://bugs.openjdk.java.net/browse/JDK-8147077
webrev: http://cr.openjdk.java.net/~psadhukhan/8147077/webrev.00/

JDK-8140530 <https://bugs.openjdk.java.net/browse/JDK-8140530> was fixed 
to maintain consistency across platforms
so that VolatileImage of 0 width,height should result in IAE in linux as 
it was already causing IAE in windows.
Also, non-volatile Image via 
GraphicsConfiguration.createCompatibleImage(0,0) or a 
BufferedImage(0,0,imagetype) also was resulting in IAE.

But it was found that api/java_awt/Component/FlipBufferStrategy JCK test 
was causing X11GraphicsConfig.createBackBuffer to create (0,0) volatileimage
resulting in IAE in linux. The same test was passing in windows as it 
was found that D3DGraphicsConfig#createbackBuffer does not create 0 
sized VolatileImage rather
it resize to (1,1) if it finds a 0 sized VolatileImage is requested.
The same fix is applied to X11GraphicsConfig too to make sure back 
buffer is created with at least (1,1) volatileimage.

The issue is marked noreg-jck so no regression test is added.

Regards
Prasanta
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