[OpenJDK 2D-Dev] [9] Review Request: JDK-8158524: Test file added for VolatileImage -vs- BufferedImage output comparison

[Prahalad Kumar Narayanan]

Hello Everyone

First, Thanks to Prasanta for his feedback.
I 've incorporated the feedback in the code and changes are available for review.
      Review Link: http://cr.openjdk.java.net/~pnarayanan/8158524/webrev.01/

Quick summary on changes from previous revision:
      . Wild card imports have been replaced with specific imports
      . @override annotation has been added to the paint() method
      . RuntimeException is thrown instead of Error though both would report regression failure.
      . Image loading has been corrected with proper filePath.
      . With regard to image and licensing issue:
                . I checked the image properties. There is no 'author/copyright' information with this image.
                . The file matches when compared (binary) with the similar .gif image in test/java/awt/print/PrinterJob/

Kindly review the changes at your convenience and share your views.

Thank you
Have a good day

Prahalad N.


-----Original Message-----
From: Prasanta Sadhukhan 
Sent: Thursday, August 11, 2016 1:02 PM
To: Prahalad Kumar Narayanan; 2d-dev at openjdk.java.net
Cc: Philip Race; Sergey Bylokhov
Subject: Re: [OpenJDK 2D-Dev] [9] Review Request: JDK-8158524: Test file added for VolatileImage -vs- BufferedImage output comparison

You need to use @Override annotation for paint() method. Also, you can use specific imports rather than package imports.
Also, I guess it's better to throw RuntimeException than Error for failure, not sure how jtreg will react to it.
Lastly, I am not sure if you can use duke.gif image which maynot be licensed although we have similar duke.gif in java/awt/print/PrinterJob.

Regards
Prasanta
On 8/11/2016 11:30 AM, Prahalad Kumar Narayanan wrote:
> Hello Everyone
>
> Good day to you.
>
> I 'm planning to add a test file into jdk/test/ repository.
> The webrev changes for the test file is presented herewith.
>             Link: 
> http://cr.openjdk.java.net/~pnarayanan/8158524/webrev.00/
>
> Brief on the test & its objectives:
>          . As we know, VolatileImage utilizes accelerated rendering using GPU while BufferedImage utilizes software rendering
>          . The objective of this test-case is to check whether the rendered 2d primitives appear same on VolatileImage and BufferedImage
>          . In rare cases, the rendering on VolatileImage might differ by few pixels from BufferedImage due to D3D/OpenGL driver 's handling of primitives
>                   . Java2D pipelines for D3D/OpenGL APIs use fudge factors to fine tune rendering calls so that output matches with output of BufferedImage.
>                   . Thus the test case will help in checking for consistent rendering across pipelines and also in identifying scenarios where pipelines need to be fine-tuned.
>
> Kindly review the test file and share your views at your convenience
>
> Thank you
> Have a good day
>
> Prahalad N.