[Mesa-dev] [PATCH 1/3] i965: tackle the occlusion query pipe control mess

Eric Anholt eric at anholt.net
Mon Jul 2 17:48:39 PDT 2012

Daniel Vetter <daniel.vetter at ffwll.ch> writes:

> - Separate out the depth stall from the depth count write, workarounds
>   say that a depth stall needs to be preceeded with a non-zero
>   post-sync op.
> - Implement the cs stall workaround like the kernel does.

It looks like these are actually not required for ivb, according to the
current bspec.  Also, holy crap we should refactor that to a helper
function.  But the actual change in bits being set looks like a correct
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