i965: Add norbc debug option
This INTEL_DEBUG option disables lossless compression (also known
as render buffer compression).
v2: (Matt) Use likely(!lossless_compression_disabled) instead of
!likely(lossless_compression_disabled)
(Grazvydas) Update docs/envvars.html
Cc: "12.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
diff --git a/docs/envvars.html b/docs/envvars.html
index 253aaf2..ed957bd 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -166,6 +166,7 @@
<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>