On Thu, Dec 11, 2014 at 02:24:53PM +0200, Ville Syrjälä wrote: > On Thu, Dec 11, 2014 at 08:16:59AM +0000, Chris Wilson wrote: > > In the gen7 pipe control there is an extra bit to flush the media > > caches, so let's set it during cache invalidation flushes. > > Bspec is telling me this bit is already present in snb, and calls it > 'Generic Media State Clear'. Older Bspec seems to suggest we should set > it here, and maybe that we should also issue another PIPE_CONTROL with > the bit set after MI_SET_CONTEXT when switching from media to 3D context. > These notes don't seem to be present in the current BSpec, so I'm not > sure what the deal is. In an alternative universe, I do the barrier + context switch first, invalidate later. However, there is also a benefit to doing the invalidate before context switch as bspec talks about not reloading invalidated indirect state. Not sure if that ever applies to us though. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
