--- Comment #7 from Roland Scheidegger <sroland@...> 2008-07-02 05:42:42 PST ---
(In reply to comment #6)
> (In reply to comment #5)
> > > I915 adds some extra instructions to do fog, then turn off FogOption, which
> > > causes the FOGC attribute of the span isn't set on mesa_7_0_branch. This patch
> > > fixes this issue, but I am not sure whether it breaks other driver. Could you
> > > take a look?
> > I don't think this is entirely correct. A (user supplied) fragment program
> > could use FOGC for something else than fog.
> This patch just initializes the FOGC attribute of the span if FOGC is used as
> an input. If a fragment used FOGC for something, it still need to initialize
> this attribute, right?
You're right I didn't look closely enough. May cause (little) unnecessary work
to be done but if fog is applied or not is not determined by this, so should
probably be ok.
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