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Diffstat (limited to 'docs/shading.html')
| -rw-r--r-- | docs/shading.html | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/docs/shading.html b/docs/shading.html index 77c86be3aa..bd02335a80 100644 --- a/docs/shading.html +++ b/docs/shading.html @@ -39,7 +39,8 @@ 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 +50,12 @@ 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 |