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Make rasterizer screenshot work with gl_context_switch #18850
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May 26, 2020 10:31
cyanglaz
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Follow up on #18601.
The
ScreenshotLayerTreeAsImagewon't work after we applied the context_switch because the gl context is popped after therastercall.It was working before because we never reset the gl context after
rasterTo make it work again, we need to set the gl context before taking the snapshot.
I have added some unit tests for the screenshot methods. However, the tests won't really catch gl bugs like the PR is trying to fix, because the gl is running on the iOS platform, and the tests are running on host.
We might be able to do some integration tests if we set up some old iOS devices that uses GL in the device lab.