http://bugs.freedesktop.org/show_bug.cgi?id=14002
Summary: [i965] GL_COMPARE_R_TO_TEXTURE_ARB is not handled well
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/i965
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: dri-devel@lists.sourceforge.net
System Environment:
--------------------------
--Platform: FC6
--Xf86_video_intel:f089942689df622b1af00569eade4883a84eb7a3
--Mesa:3369cd9a6f943365242d7832e69788d4aede9a8f
--DRM:cd19dcef4f7cc454f68618a0a1e903f159db21ad
--Kernel:2.6.22
Bug detailed description:
--------------------------
this issue doesn't happen in software rendering mode
this issue doesn't happen on i915
GL_COMPARE_R_TO_TEXTURE_ARB is not handled well.
the driver will complains:
"Unknown value in intel_translate_shadow_compare_func: 884e"
and it seems, the code related here is:
src/mesa/drivers/dri/i965/brw_wm_sampler_state.c:324L
if (key->comparemode == GL_COMPARE_R_TO_TEXTURE_ARB) {
/* Shadowing is "enabled" by emitting a particular sampler
* message (sample_c). So need to recompile WM program when
* shadow comparison is enabled on each/any texture unit.
*/
sampler->ss0.shadow_function =
intel_translate_shadow_compare_func(key->comparemode);
}
but intel_translate_shadow_compare_func can't handle this comparemode
Reproduce steps:
----------------
start X
compile and run the attached test case
Current result:
----------------
GL_COMPARE_R_TO_TEXTURE_ARB is not handled well
Expected result:
----------------
GL_COMPARE_R_TO_TEXTURE_ARB should be handled well
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