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 5dd7bab2c664698e3c3050ea184cc8f07a2cddd2..9eee8db2ebe2a53c8c57b80cadfdf4b9ab675f82 100644 (file)
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -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.