document broken inverse trig functions

diff --git a/docs/shading.html b/docs/shading.html
index aa19c88d86d5b55639a0ddd4bed9cc27d71a0584..99342a329f77b438a8c9cb0d5f918730605b7935 100644 (file)
--- a/docs/shading.html
+++ b/docs/shading.html
@@ -45,6 +45,7 @@ in Mesa:
 <li>Linking of multiple shaders is not supported
 <li>gl_ClipVertex
 <li>The derivative functions such as dFdx() are not implemented
+<li>The inverse trig functions asin(), acos(), and atan() are not implemented
 </ul>
 
 <p>