On Sun, 22 Nov 2020 07:36:12 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:

> These tests draw some specific pattern to the VolatileImage and to the 
> BufferedImage, and then compare pixels.
> 
> The test uses the getSnapshot() method to get the pixels from VolatileImage, 
> and this method produces some interpolation "artifacts" if the fractional 
> scale is used in the system(like 125%).
> 
> The solution is to use some predefined scale to pass the tests, to reproduce 
> initial bug scale=1 is enough.
> One test fails because of the bug in the XRender pipeline.

I have a drive-by question: why do some tests run with 
`-Dsun.java2d.uiScale=3`, and some are not?

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PR: https://git.openjdk.java.net/jdk/pull/1372

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