Out-of-Order Rasterization On RadeonSI Will Bring Better Performance In Some Games

[phoronix]

Phoronix: Out-of-Order Rasterization On RadeonSI Will Bring Better Performance In Some Games

AMD developer Nicolai Hähnle has published a set of patches today for adding out-of-order rasterization support to the RadeonSI Gallium3D driver. Long story short, this can boost the Linux gaming performance of GCN 1.2+ graphics cards when enabled...

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

[kiffmet]

Nice to see that the opensource drivers are getting more and more optimized. If any of the devs read this, thanks a lot!!!

[Kraut]

I wonder if there will be an OpenGL extension for this like VK_AMD_rasterization_order and how big the improvements can be on older GCN cards.

[nuetzel]

@Michael:
Marek started the work, but I got sigfault/bus error with his patch set.
Was: '[Mesa-dev] [PATCH 1/2] radeonsi: enable out-of-order rasterization when possible on VI and GFX9 dGPUs'
So Nicolai took a stab ;-)

Remember: If you try it, you have to use patch 2-5. Number 1 _is_ allready in.
Cheers (you know what I mean ;-) ),
Dieter

[gurv]

Very nice, glad to see that improvements keep coming to AMD's open source drivers.
Thanks to all involved indeed

[Kemosabe]

Nice in theory but I can't see myself messing around with such options...

[Niarbeht]

I love all the work that goes into the open-source AMD drivers, and how much improvement is seen. Now if only I could get that second card...

[brent]

Nice in theory but I can't see myself messing around with such options...

You don't have to. This patch series enables safe optimizations whenever possible. The additional, unsafe optimizations aren't going to make much of a difference in most situations anyway.

[Shevchen]

Is there a list of all possible options to play with? (Not just those two)

[s_j_newbury]

Is there a list of all possible options to play with? (Not just those two)

driconf exposes the options the driver makes available, it's not a static list. It let's you create profiles per application binary. The only exception are the DEBUG environment overrides.