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docs/envvars: Document Asahi variables

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18508>
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Alyssa Rosenzweig 2022-09-05 12:20:56 -04:00 • committed by Marge Bot
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docs/envvars.rst
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@ -1140,5 +1140,43 @@ r300 driver environment variables
``notcl`` ``notcl``
Disable hardware accelerated Transform/Clip/Lighting Disable hardware accelerated Transform/Clip/Lighting
Asahi driver environment variables
----------------------------------
:envvar:`ASAHI_MESA_DEBUG`
a comma-separated list of named flags, which do various things:
``trace``
Trace work submitted to the GPU to files, using the agxdecode
infrastructure. This produces a large volume of data, so should be used
with caution. The traces are written to ``agxdecode.dump``,
but this can be overridden using ``AGXDECODE_DUMP_FILE``.
``no16``
Disable 16-bit floating point support. This may workaround application
bugs in certain OpenGL ES applications originally written for desktops. If
such applications are found in the wild, they should be fixed upstream (if
possible) or added in the Mesa-wide driconf (if closed source).
``dirty``
In debug builds only: disable dirty tracking optimizations.
:envvar:`AGX_MESA_DEBUG`
a comma-separated list of named flags, which do various things:
``shaders``
Print shaders being compiled at various stages in the pipeline.
``shaderdb``
Print statistics about compiled shaders.
``verbose``
Disassemble in verbose mode, including additional information that may be
useful for debugging.
``internal``
Include even internal shaders (as produced for clears, blits, and such)
when printing shaders. Without this flag, internal shaders are ignored by
the shaders and shaderdb flags.
``novalidate``
In debug builds only: skip internal intermediate representation validation.
``noopt``
Disable various backend optimizations.
Other Gallium drivers have their own environment variables. These may Other Gallium drivers have their own environment variables. These may
change frequently so the source code should be consulted for details. change frequently so the source code should be consulted for details.