[Mesa-dev] [Bug 111308] [Regression, NIR, bisected] Black squares in Unigine Heaven via DXVK

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111308

Danylo <danylo.piliaiev at gmail.com> changed:

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                 CC|                            |danylo.piliaiev at gmail.com

--- Comment #3 from Danylo <danylo.piliaiev at gmail.com> ---
Created attachment 144968
  --> https://bugs.freedesktop.org/attachment.cgi?id=144968&action=edit
good_vs_bad_shaders_nir

> does changing 'flt' to '~flt' make any difference?
No

> Do you think you could send me dumps with and without that optimization with the environment variable NIR_PRINT=true?
I've attached the relevant parts of optimizations and the final NIR, the whole
dump is 300 mb so I didn't attach it.

Vulkan renderdoc of frame with issue:
https://mega.nz/#!sR8DGKwD!IHSQv6dWjk-YfyOnWZy36v-STBctmJbqGod19RPVDfg .
Captured on Mesa master and HD 620. It is a capture of dx11 capture because the
app is 32 bit so I was unable to directly capture Vulkan trace of it. Don't
mind green artifacts in trace - they appear only in Vulkan trace.

The corruption starts from the call EID 2821, select "NaN/INF" overlay and look
at the only output of this draw. NaNs would be highlighted as red.

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