mapi/vgapi: Add SConscript for Windows build.

[mesa.git] / docs / shading.html

diff --git a/docs/shading.html b/docs/shading.html
index 77c86be3aa63e2e55109757d41b5550410b90885..750884cf36c448c8acfb7fd98edb0d0d70bfa5e7 100644 (file)
--- a/docs/shading.html
+++ b/docs/shading.html
@@ -14,10 +14,6 @@ This page describes the features and status of Mesa's support for the
 OpenGL Shading Language</a>.
 </p>
 
-<p>
-Last updated on 15 December 2008.
-</p>
-
 <p>
 Contents
 </p>
@@ -39,7 +35,8 @@ Contents
 
 <p>
 The <b>MESA_GLSL</b> environment variable can be set to a comma-separated
-list of keywords to control some aspects of the GLSL compiler:
+list of keywords to control some aspects of the GLSL compiler and shader
+execution.  These are generally used for debugging.
 </p>
 <ul>
 <li>dump - print GLSL shader code to stdout at link time
@@ -49,6 +46,12 @@ list of keywords to control some aspects of the GLSL compiler:
 <li>nopt - disable compiler optimizations
 <li>opt - force compiler optimizations
 <li>uniform - print message to stdout when glUniform is called
+<li>nopvert - force vertex shaders to be a simple shader that just transforms
+    the vertex position with ftransform() and passes through the color and
+    texcoord[0] attributes.
+<li>nopfrag - force fragment shader to be a simple shader that passes
+    through the color attribute.
+<li>useprog - log glUseProgram calls to stderr
 </ul>
 <p>
 Example:  export MESA_GLSL=dump,nopt