docs: document Intel, R300 env vars

diff --git a/docs/envvars.html b/docs/envvars.html
index b2c0e01ee321cb7b5c66fd09a9a41d172f8711eb..bb1c914cc73e2be6e2999a9676ccd9c7774e4a1a 100644 (file)
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -51,5 +51,24 @@ See the <A HREF="xlibdriver.html">Xlib software driver page</A> for details.
 </ul>
 
 
+<p>
+These environment variables are for the Intel i945/i965 drivers:
+</p>
+<ul>
+<li>INTEL_STRICT_CONFORMANCE - if set to 1, enable sw fallbacks to improve
+    OpenGL conformance.  If set to 2, always use software rendering.
+<li>INTEL_NO_BLIT - if set, disable hardware-accelerated glBitmap,
+    glCopyPixels, glDrawPixels.
+</ul>
+
+
+<p>
+These environment variables are for the Radeon R300 driver:
+</p>
+<ul>
+<li>R300_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
+</ul>
+
+
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