gc funcs and ops at screen level

[Keith Packard]

Dave Airlie <airlied at gmail.com> writes:

> It seems wierd that we have the GC carrying around a pointer to each
> of these, when I don't see any evidence we can't just stash one set of
> ops/funcs per screen.
>
> Did we every, do we currently to anyone knowledge modify gc ops or
> funcs at anything less than a screen level?

yes, we used to do this all the time in ValdiateGC where each GC was
'optimized' to point at funcs that were tuned for the current GC
state. I eliminated that in fb, and most drivers seem to have followed
suit in the years since.

I intended that these should eventually live in the screen pointer;
please go for it!

-- 
keith.packard at intel.com
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