mesa: new MESA_LOG_FILE env var to log errors, warnings, etc., to a file
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
diff --git a/docs/envvars.html b/docs/envvars.html
index fffb50a..102ea28 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -42,6 +42,8 @@
printed to stderr.<br>
If the value of MESA_DEBUG is 'FP' floating point arithmetic errors will
generate exceptions.
+<li>MESA_LOG_FILE - specifies a file name for logging all errors, warnings,
+etc., rather than stderr
<li>MESA_TEX_PROG - if set, implement conventional texture env modes with
fragment programs (intended for developers only)
<li>MESA_TNL_PROG - if set, implement conventional vertex transformation