[Bug 99507] Corrupted frame contents with Vulkan version of DOTA2, Talos Principle and Sascha Willems' demos when they're run Vsynched in fullscreen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99507

--- Comment #20 from Jason Ekstrand <jason at jlekstrand.net> ---
The problem here is that we aren't properly allowing the kernel to disable
caching on scanout buffers.  At first, it was only really noticeable on BDW
because there we weren't disabling eDRAM which is a very large cache and so the
amount of data missing was substantial.  You could still notice on SKL+ but it
was much more minor.  With modifiers, however, the result is now massive
corruption.  I've got a patch for the bug which no one has felt like reviewing.

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