RFR: JDK-8272392 Lanai: SwingSet2. Black background on expanding tree node

[Alexey Ushakov]

On Sun, 10 Oct 2021 18:26:13 GMT, Alexey Ushakov <avu at openjdk.org> wrote:

> Handled SRC composite mode in MTLBlitLoops_IsoBlit

I thought about the test in the context of this particular bug - where we face garbage in VRAM and decided that the test would be not reliable. However, probably it's possible to invent some other scenario with IsoBlit to check this particular change. I'll try to make a test.

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PR: https://git.openjdk.java.net/jdk/pull/5882