[Bug 110721] graphics corruption on steam client with mesa 19.1.0 rc3 on polaris

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110721

--- Comment #9 from Pierre-Eric Pelloux-Prayer <pierre-eric at damsy.net> ---
> (In reply to Ropid from comment #6)
> @alvarex:
> 
> Try starting chromium with this command line here, it makes it show
> corruption everywhere for me here:
> 
> chromium --ignore-gpu-blacklist --enable-gpu-rasterization
> --enable-native-gpu-memory-buffers --enable-zero-copy
> --disable-gpu-driver-bug-workarounds
> 

Same here so I did a bisect.
There are 2 problematic commits, making the bisect a bit more complicated.

The first one has already been solved by d6053bf2a170.
The second one is 811fa9a79cf ("mesa: unreference current winsys buffers when
unbinding winsys buffers"). 

Using master + this commit reverted: no more corruption in chromium.

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