docs: document the LIBGL_DRI3_DISABLE environment variable
Suggested-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Martin Peres <martin.peres@linux.intel.com>
diff --git a/docs/envvars.html b/docs/envvars.html
index 31d14a4..c0d5a51 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -34,6 +34,7 @@
<li>LIBGL_NO_DRAWARRAYS - if set do not use DrawArrays GLX protocol (for debugging)
<li>LIBGL_SHOW_FPS - print framerate to stdout based on the number of glXSwapBuffers
calls per second.
+<li>LIBGL_DRI3_DISABLE - disable DRI3 if set (the value does not matter)
</ul>