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docs: document useful radeonsi env variables 

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15559>
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Pierre-Eric Pelloux-Prayer 2022-03-24 17:16:49 +01:00 committed by Marge Bot
parent 9c2605ae42
commit 47152875c7
1 changed files with 12 additions and 1 deletions
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docs/envvars.rst
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@ -763,13 +763,24 @@ RADV driver environment variables
radeonsi driver environment variables
-------------------------------------
:envvar:`radeonsi_no_infinite_interp`
Kill PS with infinite interp coeff (might fix hangs)
:envvar:`radeonsi_clamp_div_by_zero`
Clamp div by zero (x / 0 becomes FLT_MAX instead of NaN) (might fix rendering corruptions)
:envvar:`radeonsi_zerovram`
Clear all allocated memory to 0 before usage (might fix rendering corruptions)
:envvar:`AMD_DEBUG`
a comma-separated list of named flags, which do various things:
``nodcc``
Disable DCC.
``nodccclear``
Disable DCC fast clear.
Disable DCC fast clear
``nodisplaydcc``
disable Delta Color Compression (DCC) on displayable images
``nodccmsaa``
Disable DCC for MSAA
``nodpbb``