Another Batch Of RadeonSI Optimizations Land In Mesa 21.3

[phoronix]

Phoronix: Another Batch Of RadeonSI Optimizations Land In Mesa 21.3

Another batch of minor optimizations were merged to Mesa 21.3 for the RadeonSI Gallium3D driver...

https://www.phoronix.com/scan.php?page=news_item&px=RadeonSI-More-For-Mesa-21.3

[FireBurn]

I thought performance numbers were required for these kind of merges

[tildearrow]

I thought performance numbers were required for these kind of merges

The performance numbers are measured in Watts (lower is better).

[smitty3268]

I thought performance numbers were required for these kind of merges

Intel tends to require that, and it's usually done for core Mesa changes.

This is all in the radeonsi driver code, though, and individual drivers can have any policy they want. AMD just tends to commit things without a ton of documentation.

From the parent merge request:

These are CPU overhead improvements motivated by viewperf/snx.

so I suspect it probably won't show up as much of a difference for games.

[Venemo]

I thought performance numbers were required for these kind of merges

It's good to have performance numbers, but they are not required by mesa. Ultimately the driver maintainers decide what can get merged and what can't.

Some of the work is is about fixes, code cleanups and clarifying various bits of information. Even if you're doing perf work, not every change affects every use case, and not all of them can be easily measured or quantified.

[nranger]

- Eliminating the primitive discard compute shader since it doesn't always work, only relevant for GFX9/Vega and older, and is considered too complicated.

I'm not opposed to changes that disable old broken things. However I really hope Vega continues to get some love. Mesa is getting more RDNA 1/2 patches, but AMD is still actively selling Ryzen 5000 mobile and desktop APUs with Vega compute units.

[pal666]

I thought performance numbers were required for these kind of merges

required by whom? by you? you are not maintainer. maintainer of radeonsi knows what to require from himself

[Venemo]

I'm not opposed to changes that disable old broken things. However I really hope Vega continues to get some love. Mesa is getting more RDNA 1/2 patches, but AMD is still actively selling Ryzen 5000 mobile and desktop APUs with Vega compute units.

The primitive discard CS is probably not something useful to you anyway, unless you were using one of the few workstation apps that benefit from it.

[FireBurn]

required by whom? by you? you are not maintainer. maintainer of radeonsi knows what to require from himself

No not by me, by the project

[pal666]

No not by me, by the project

project consists of people. one of them wrote this code, what makes you think he doesn't know what he is doing?