Commit 85fb3e40 authored by Brian Paul's avatar Brian Paul

docs: document more MESA_GLSL env var options

parent 24e2f614
......@@ -28,6 +28,7 @@ Setting this variable automatically sets the MESA_TEX_PROG variable as well.
<li>MESA_EXTENSION_OVERRIDE - can be used to enable/disable extensions.
A value such as "GL_EXT_foo -GL_EXT_bar" will enable the GL_EXT_foo extension
and disable the GL_EXT_bar extension.
<li>MESA_GLSL - <a href="shading.html#envvars">shading language options</a>
</ul>
<p>
......
......@@ -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 +50,11 @@ 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.
</ul>
<p>
Example: export MESA_GLSL=dump,nopt
......
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