muon - A subatomic path tracer

[hasty grotto]

https://github.com/voithos/muon

I built this tiny CPU path tracer last year as a way of learning more about PBR and offline rendering. 🙂 It's pretty basic, but does sport a couple of interesting tricks like Russian roulette and MIS.

I've mostly finished working on it, but do intend to go back from time to time and try adding new stuff as inspiration strikes.

Here are a couple of extra renders

And now for (horrible) early renders 🙂

First ray-triangle intersections

Adding ambient color

Adding transforms

Diffuse shading

Specular reflections

Combined

Monte carlo integrator (direct light)

Soft (direct) shadows

Add indirect component (agh, the noise!)

Optimize

GGX materials

MIS

And then a whole scene

Unfortunately, still don't have texture lookup 😅

But that's it for now!

[quick turret]

That looks great!
I hope to get there one day aswell

[hasty grotto]

Thanks! 😄 You can do it!!

[craggy orchid]

hows it subatomic? @hasty grotto

[hasty grotto]

Just metaphorically, unfortunately. I.e. it's a small / toy project

[craggy orchid]

ah

rip

still super cool

[craggy orchid]

Howd you do the colours if you dont have textures?

just average of the texture or smth?

[hasty grotto]

Thanks! Sorry to disappoint, haha

Nah, the colors are just set globally on the material

[craggy orchid]

ah ok

hows the speed?

[hasty grotto]

It's CPU side, so it's not as fast as GPU path tracers, but it does have a basic BVH implementation and supports multi-threaded rendering

[craggy orchid]

how fast?

[hasty grotto]

Depends on the scene and resolution, etc, but about ~45s for a 1080p image at 32spp with a simple scene

[craggy orchid]

what CPU?