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-rw-r--r--docs/shading.html1
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/shading.html b/docs/shading.html
index 9e3c7218e31..76f25316f86 100644
--- a/docs/shading.html
+++ b/docs/shading.html
@@ -59,6 +59,7 @@ execution. These are generally used for debugging.
<li><b>nopfrag</b> - force fragment shader to be a simple shader that passes
through the color attribute.
<li><b>useprog</b> - log glUseProgram calls to stderr
+<li><b>errors</b> - GLSL compilation and link errors will be reported to stderr.
</ul>
<p>
Example: export MESA_GLSL=dump,nopt