this post was submitted on 07 Mar 2024
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[–] pennomi 35 points 9 months ago

With the merge request that landed this Vulkan ray-tracing support for Lavapipe, Konstantin Seurer shared the screenshot below and wrote "Don't ask about performance"

So… how’s the perf— gets shot

[–] [email protected] 20 points 9 months ago (1 children)

Gushing frames at 1fps! Kidding aside this is pretty awesome though

[–] [email protected] 4 points 9 months ago

It's actually 0.6 FPS or 1.6 SPF (Seconds per frame)

[–] QuandaleDingle 16 points 9 months ago (2 children)

Hmm, seems interesting. What's the reason for computing the raytracing with the CPU?

[–] [email protected] 31 points 9 months ago (1 children)

I can see a few reasons:

  • automated tests on single frames
  • batch renders on a server (e.g. for stills or cutscenes)
  • comparisons across GPU archs - it could essentially be the "standard" for how a scene should be rendered

And of course, maybe some CPU manufacturer will build in an accelerator so lower end GPUs (say, APUs) could have reasonable raytracing in otherwise GPU limited games (i don't know enough about modern game pipelines to know if that's a possibility).

Or the final reason, which may be the most important of all: why not?

[–] [email protected] 19 points 9 months ago

I'll add one to this - optimization. A lot of clever optimization techniques tend to come out of projects like this - necessity is the mother of invention.

[–] [email protected] 10 points 9 months ago* (last edited 9 months ago)

If the CPUs get strong enough, they could run old raytracing games at some point … especially on hardware platforms that don’t have ray tracing GPUs available for them.

[–] [email protected] 10 points 9 months ago (1 children)

I would like to see the benchmark results from this running on a high end system like a dual CPU EPYC 9754.

[–] Unyieldingly 5 points 9 months ago

I want to see a Ryzen 7 7800X3D vs Ryzen 7 7800X vs Intel Core i9-14900K.

[–] [email protected] 6 points 9 months ago (1 children)

Can it run Crysis Remastered?

[–] Unyieldingly 2 points 9 months ago

It does run i think it was OG Crysis at a almost playable frame rate.