On Sat 11 Jun 2016, Jason Ekstrand wrote:
> This fixes 688 Vulkan CTS tests on Haswell.
Whoo! Bugfixes!
The PRM states that, on HSW, you also need to program
SAMPLER_BORDER_COLOR_STATE correctly for integer formats. I suspect that
the CTS tests may be passing by luck.
See this encouraging comment in brw_sampler_state.c:
/* Haswell's integer border color support is completely insane:
* SAMPLER_BORDER_COLOR_STATE is 20 DWords. The first four are
* for float colors. The next 12 DWords are MBZ and only exist to
* pad it out to a 64 byte cacheline boundary. DWords 16-19 then
* contain integer colors; these are only used if SURFACE_STATE
* has the "Integer Surface Format" bit set. Even then, the
* arrangement of the RGBA data devolves into madness.
*/
Anyway, this patch is
Reviewed-by: Chad Versace <chad.vers...@intel.com>
and please add a TODO somewhere for SAMPLER_BORDER_COLOR_STATE.
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