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docs: document GALLIUM_HUD_DUMP_DIR envvar 

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
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Edmondo Tommasina 2016-12-21 22:58:14 +01:00 committed by Marek Olšák
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docs/envvars.html
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@ -219,6 +219,8 @@ Mesa EGL supports different sets of environment variables. See the
disable for unencumbered viewing the rest of the time. For example, set
GALLIUM_HUD_VISIBLE to false and GALLIUM_HUD_TOGGLE_SIGNAL to 10 (SIGUSR1).
Use kill -10 <pid> to toggle the hud as desired.
<li>GALLIUM_HUD_DUMP_DIR - specifies a directory for writing the displayed
hud values into files.
<li>GALLIUM_DRIVER - useful in combination with LIBGL_ALWAYS_SOFTWARE=1 for
choosing one of the software renderers "softpipe", "llvmpipe" or "swr".
<li>GALLIUM_LOG_FILE - specifies a file for logging all errors, warnings, etc.