Hi,
On 06/18/2015 03:17 PM, Emil Velikov wrote:
Strange I was under the impression that there are apps that make use
of GS, albeit not too many.
So far I haven't seen any e.g. Steam game using GS, but Unreal Engine 4
demos:
https://wiki.unrealengine.com/Linux_Demos
use them. Of the 4 demos I checked, all compiled at least one geometry
shader, Vehicle Game demo compiled three.
I didn't check what they use them for, in total they compile hundred(s)
of shaders.
- Eero
On the perf side - I was thinking about the hardware (i.e. regardless
if the driver does extra state-tracking or not) - would there be the
optimisation mentioned, would there be a "stall" in the pipeline, due
to the "new" values being flushed/fetched/etc. Now that I think about
it, only a few of the HW guys may know the answer on this one, so
don't bother with this.
Thanks
Emil
On 16 June 2015 at 20:56, Marek Olšák <mar...@gmail.com> wrote:
There are probably 0 apps using GS, so the answer is 0.
The hardware doesn't ignore anything. It only does what it's told to do.
The radeonsi driver doesn't check if the state change is redundant or not.
Marek
On Tue, Jun 16, 2015 at 10:13 PM, Emil Velikov <emil.l.veli...@gmail.com> wrote:
Hi Marek,
Out of curiosity:
Any rough idea of how much of a perf. improvement this might bring ?
Would the hardware ignore the newly (re)bound const. bufs, when the
values are unchanged ?
Thanks
Emil
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
