[Bug 109216] 4-27% performance drop in Vulkan benchmarks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109216

--- Comment #2 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Lionel Landwerlin from comment #1)
> Ian: I wonder if that could be a result of this series :
> https://gitlab.freedesktop.org/mesa/mesa/merge_requests/9

This series doesn't seem Vulkan specific.

There was no drop in GL or GLES version of Aztec Ruins, only in Vulkan version
of AztecRuins (*).  And no drop in other GL benchmarks, so I think the
regression is Vulkan specific.

(*) While Vulkan version runs windowed (because GfxBench doesn't seem to
support fullscreen for Vulkan), and GL & GLES versions are fullscreen, I don't
think that test being windowed is relevant because:
- the other regressing Vulkan tests are fullscreen
- AztecRuins has low FPS

Were you able to reproduce e.g. Deferred Multisampling Vulkan demo drop?

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