Beautiful Glitter Simulation…Faster Than Real Time! ✨

[Sharlybg]

Another wonderfull 2 minutes paper release that can push carpaint cloth jewelery and more to the next level :

The paper "Procedural Physically based BRDF for Real-Time Rendering of Glints" is available here:
http://igg.unistra.fr/People/chermain...

Youtube Link

https://youtu.be/x2zDrSgrlYQ

[kintuX]

Yes! An update...

Glitter Simulation, Now Faster Than Ever! @ Two minute papers YT channel

Slope-Space Integrals for Specular Next Event Estimation (paper & resources)

[Sharlybg]

This is very interessting as it can solve the need for a cache to compute SDS caustics.
Also it can speed up interior with lot of reflective surfaces.
And carpaint glittering could be achieveable now.
Hum I like it. Now it depend on how well the paper is wrote and how hard the method is to implement....

[kintuX]

Yup, bye-bye caches & excessive pre-computing.
In come animation w/o glittery flickering.
GGX Integral is provided, but LuxCore is lacking features.
So, it's more of a question when Cycles (and/or others - RPR, redshift, octane...) get this, what's there left for LuXcore?

[Dade]

Actually, LuxCore has GGX in Disney material.

[kintuX]

Actually, LuxCore has GGX in Disney material.

Right, but since even 1. iteration of Principled isn't fully implemented... ... LuxCore future doesn't seem bright

Now it depend on how well the paper is wrote and how hard the method is to implement....

With Wenzel Jakob co-authoring paper, I assume examples were most likely produced using Mitsuba so implementation could be and will probably be studied.

[Dade]

Emm, you should read the paper ... the idea has couple of limits ... really

[Sharlybg]

Emm, you should read the paper ... the idea has couple of limits ... really

That one , do they mean specular to specular path (if that make any sense ) ?

The main limitation of our method is its restriction to
specular chains with a single vertex, hence other strategies remain
necessary to handle specular transport with multiple interactions.
Addressing this significantly more challenging case is an important
topic for future work.

[Dade]

Emm, you should read the paper ... the idea has couple of limits ... really

That one , do they mean specular to specular path (if that make any sense ) ?

The main limitation of our method is its restriction to
specular chains with a single vertex, hence other strategies remain
necessary to handle specular transport with multiple interactions.
Addressing this significantly more challenging case is an important
topic for future work.

Yes, among other things, it is not able to render the caustic of a sphere (2x specular intersections) over a plane