[Bug 86469] Unreal Engine demo doesn't run

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86469

--- Comment #2 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Kenneth Graunke from comment #1)
> This should actually be pretty easy to fix.  Sandybridge has more than 16
> MRFs, so we could just adjust the spilling code to use the higher numbered
> ones which aren't used for anything else.
> 
> The check also seems a bit heavy handed...it may not actually conflict...

I've checked that Effects works on SNB by simply setting spill_base_mrf 15 (as
14 is used). I did not find documentation that would indicate more than 16 MRFs
available though. Docs indicate there are 16 from which 1 .. 15 can be used.

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