RFR: 8255724: [XRender] the BlitRotateClippedArea test fails on Linux in the XR pipeline

[Prasanta Sadhukhan]

On Tue, 19 Oct 2021 09:56:07 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

> This test was added under https://bugs.openjdk.java.net/browse/JDK-8255722 to verify rotated blit operation. But it started failing XRender pipeline because of pixel color mismatch. Looks like we have minor difference in pixel color because of arithmetic precision differences in transformations.
> 
> This test fails every-time in XRender without tolerance and passes with +/-1 in Color values in CI systems. Updated test to use +/-1 tolerance as mentioned in JBS. Added this little tolerance in Color will not change functionality that we are verifying in this test.

Marked as reviewed by psadhukhan (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/6002