docs/devinfo: Expound on helpful extension tips

[mesa.git] / docs / envvars.html

diff --git a/docs/envvars.html b/docs/envvars.html
index 4eff7065df090cbe0a6f462d47faf10eb35e8f8b..ed957bd1999a5e027065fcdfaa4683c3800e3274 100644 (file)
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -163,6 +163,10 @@ See the <a href="xlibdriver.html">Xlib software driver page</a> for details.
    <li>blorp - emit messages about the blorp operations (blits &amp; clears)</li>
    <li>nodualobj - suppress generation of dual-object geometry shader code</li>
    <li>optimizer - dump shader assembly to files at each optimization pass and iteration that make progress</li>
+   <li>vec4 - force vec4 mode in vertex shader</li>
+   <li>spill_fs - force spilling of all registers in the scalar backend (useful to debug spilling code)</li>
+   <li>spill_vec4 - force spilling of all registers in the vec4 backend (useful to debug spilling code)</li>
+   <li>norbc - disable single sampled render buffer compression</li>
 </ul>
 </ul>
 
@@ -232,7 +236,7 @@ See src/mesa/state_tracker/st_debug.c for other options.
 <li>LP_PERF - a comma-separated list of options to selectively no-op various
     parts of the driver.  See the source code for details.
 <li>LP_NUM_THREADS - an integer indicating how many threads to use for rendering.
-    Zero turns of threading completely.  The default value is the number of CPU
+    Zero turns off threading completely.  The default value is the number of CPU
     cores present.
 </ul>