[Bug 107510] [GEN8+] up to 10% perf drop on several 3D benchmarks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107510

--- Comment #14 from Eero Tamminen <eero.t.tamminen at intel.com> ---
Because exactly same tests were affected both times this perf regression was
introduced to Mesa, I think it's also the cause for the small regressions in
the listed fragment shader bound tests:
- GpuTest v0.7 Julia FP64
- GfxBench ALU2
- Unigine Heaven
- SynMark PSPom

Not just for the larger regressions in the 2 Tessellation & Geometry shader
tests.


Of these, PSPom regression was fixed between these commits:
18cc65edf8: 2018-10-15 17:56:12 i965: Drop assert about number of uniforms in
ARB handling
322a919a41: 2018-10-16 11:47:55 anv: Implement VK_EXT_pci_bus_info

(My guess is that "nir: Copy propagation between blocks" commit fixed it.)


Timothy's latest patch series:
  https://patchwork.freedesktop.org/series/51642/

Fixes just the larger tessellation & geometry shader regressions, not the
smaller fragment shader ones (expected as latest version disables the
optimization pass for fragment stage).

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-3d-bugs/attachments/20181029/da440e8d/attachment.html>