[Mesa-dev] [PATCH] i965/gen8+: Skip depth stalls on state change

[Ben Widawsky]

On Wed, Sep 02, 2015 at 01:03:43PM +0100, Chris Wilson wrote:
> On Wed, Aug 26, 2015 at 10:52:58AM -0700, Ben Widawsky wrote:
> > Docs suggest this is no longer required starting with Gen8.
> > 
> > Perf (no regressions in n=20)
> > OglMultithread       0.67%
> > OglTerrainPanInst    0.12%
> > trex                 0.45%
> > warsow               0.64%
> > 
> > I have a couple of spurious failures in piglit on BSW, and SKL. I have no
> > evidence that they are related to this patch.
> > 
> > Cc: Chris Wilson <chris at chris-wilson.co.uk>
> > Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> 
> I could not find any contra-indications that would suggest the workaround
> needed to be preserved for bdw+.
> 
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
> -Chris

Apparently rebase on master and with a kernel update there are actually 3
regressions. Any bright ideas?

piglit.spec.arb_texture_cube_map_array.fbo-generatemipmap-cubemap array s3tc_dxt1.sklm64
piglit.spec.arb_get_texture_sub_image.arb_get_texture_sub_image-getcompressed.sklm64
piglit.spec.ext_texture_compression_s3tc.getteximage-targets cube_array s3tc.sklm64

> 
> -- 
> Chris Wilson, Intel Open Source Technology Centre