Wow, it's not often we as developers get to attribute an unexplained performance improvement to silicon. I'm happy to say I guessed wrong here.
Did this start specifically with Haswell and is it likely this will persist in future gen hardware - more specifically, what's the proper test by the driver for availability of this feature in hardware? Finally, were any other silicon improvements revealed besides what Chai-I was able to expose? Mark On Fri, Sep 20, 2013 at 12:51 PM, Kenneth Graunke <kenn...@whitecape.org>wrote: > On 09/20/2013 08:30 AM, Ian Romanick wrote: > > On 09/20/2013 09:50 AM, Paul Berry wrote: > [snip] > >> Since the SAMPLER_MODE setting allows us to trade off quality vs > >> performance, we're also interested to know whether a value less than > >> 0x1f is sufficient to produce the performance improvement in Xonotic--it > >> would be nice if we could find a "sweet spot" for this setting that > >> produces the performance improvement we need without sacrificing too > >> much quality. > > > > How about if we just give a driconf option to adjust it. Then gamers > > can make their own choice. For applications where it know it makes a > > big difference, we can provide a default non-0 value in the system > driconf. > > Because you can't (yet) program registers from userspace unless you're > root. > > I would like to use the same default value as Windows. I'm fine with > making it tunable beyond that. > > --Ken > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev >
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