RadeonSI OoO Rasterization Lands In Mesa 17.3 For RX Vega & VI GPUs

[phoronix]

Phoronix: RadeonSI OoO Rasterization Lands In Mesa 17.3 For RX Vega & VI GPUs

The RadeonSI out-of-order rasterization support for RX Vega "GFX9" and Volcanic Islands GPUs has now landed in Mesa 17.3-devel Git...

http://www.phoronix.com/scan.php?page=news_item&px=RadeonSI-OoO-Lands

[lockheed02]

OwO


(sorry, couldn't resist)

Lockheed

[oleyska]

is there any profiling work going on in mesa for per game defaults per gpu arch ?

[randomsalad]

is there any profiling work going on in mesa for per game defaults per gpu arch ?

https://www.phoronix.com/scan.php?page=news_item&px=Mesa-GL-Thread-September

If they're doing work for glthreading, they'll probably look into seeing how this feature affects the same list of games that have already been profiled. Though it'll probably take some time to go through all games and make sure it doesn't cause any weird rendering glitches.

[schmidtbag]

I figure this would have a much bigger performance improvement in Crossfire (in the event it ever becomes implemented).

[marek]

These drirc options (also environment variables) can, in my opinion, be enabled for most games to get even more performance benefit:
- radeonsi_assume_no_z_fights
- radeonsi_commutative_blend_add

They are not enabled by default because we need strict conformance, but strict conformance is usually not necessary for gaming.

[Kendji]

Could someone explaine in lamens terms what rasterization is?

[nuetzel]

These drirc options (also environment variables) can, in my opinion, be enabled for most games to get even more performance benefit:
- radeonsi_assume_no_z_fights
- radeonsi_commutative_blend_add

They are not enabled by default because we need strict conformance, but strict conformance is usually not necessary for gaming.

Hello Marek and Nicolai ( ;-) ),
I've forgotten to mail (with my tb), that I've enabled both options (in /etc/environment) _daily_ scince first day of testing.
NO artifacts noticed so far...

[nuetzel]

Could someone explaine in lamens terms what rasterization is?

Nicolai sent _nice_ blog, about:

http://nhaehnle.blogspot.de/2017/09/radeonsi-out-of-order-rasterization-on.html

[tomtomme]

These drirc options (also environment variables) can, in my opinion, be enabled for most games to get even more performance benefit:
- radeonsi_assume_no_z_fights
- radeonsi_commutative_blend_add

They are not enabled by default because we need strict conformance, but strict conformance is usually not necessary for gaming.

could those options then be enabled automatically when we fire up steam? Is this possible?