[Intel-gfx] [PATCH 0/3] drm/i915: Reduce fence usage for scanout

Daniel Vetter daniel at ffwll.ch
Tue Jan 28 20:39:29 CET 2014


On Tue, Jan 28, 2014 at 03:51:06PM +0200, Ville Syrjälä wrote:
> On Tue, Jan 28, 2014 at 01:12:44PM +0000, Chris Wilson wrote:
> > On Tue, Jan 28, 2014 at 02:51:53PM +0200, ville.syrjala at linux.intel.com wrote:
> > >   drm/i915: Don't waste fences for scanout when not needed
> > 
> > But it's gen2/3 that is short of fences (and we've a... I feel this is a
> > micro-optimisation, but now that it is done...
> 
> Yeah well, this will only "help" gen4 desktop parts and VLV since
> everything else has FBC AFAIK.

tbh I was afraid a bit that this will reduce testing coverage for that
rather nifty fence accounting bug in ppgtt. But it looks like we'll still
be ok.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch



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