On Wednesday, September 6, 2017 2:21:51 AM PDT Chris Wilson wrote: > Quoting Kenneth Graunke (2017-09-06 01:09:33) > > A couple issues remain: the series drops the malloc'd shadow copy of > > the batch for non-LLC systems. I haven't checked how dire this is. > > The last patch also dramatically impacts batch sizes, which we'll need > > to benchmark. However, I thought I'd get the code out there for review > > before finishing that - I don't expect the mechanics to change much. > > It's a slight regression atm (at least looking at piglit/drawoverhead) > all due to that dastardly readback in brw_emit_surface_state(). > > I've been chicken and been switching it with a temporary alloca there. > -Chris
Yeah, it looks to be about -3 to -4% on Synmark's OglBatch[67] as well. I'll try and fix ISL to handle the relocs so we can avoid the readback.
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