docs: document GALLIUM_HUD_DUMP_DIR envvar
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
diff --git a/docs/envvars.html b/docs/envvars.html
index 5dd7bab..9eee8db 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -219,6 +219,8 @@
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.
