[RESOLVED] Shader: Glitter / Sequin

[cjwidd]

Looking for assistance with a glitter shader. I have seen some of the previous attempts on the forum, and I've explored both the Corona and Siger car paint shaders, but I am not arriving at a satisfying result.

I am attempting to replicate the surface of a wall covering that contains a reflective paint layer. The visual result is a shimmer / glitter effect that is attenuated based on the viewing angle / light source.

Do we have stochastic flake or something similar in Corona?

[GeorgeK]

Looking for assistance with a glitter shader. I have seen some of the previous attempts on the forum, and I've explored both the Corona and Siger car paint shaders, but I am not arriving at a satisfying result.

I am attempting to replicate the surface of a wall covering that contains a reflective paint layer. The visual result is a shimmer / glitter effect that is attenuated based on the viewing angle / light source.

Do we have stochastic flake or something similar in Corona?

Do we have a real world reference picture of the material :)?

[cjwidd]

I was afraid I might get asked for that. I have attached a photo for reference, although a video is probably needed to showcase the glitter effect - think of a sequin dress.

[cjwidd]

Here are some tests

[GeorgeK]

oh it's a hard one true, pretty solid job on the samples.

[cjwidd]

Thank you :)

Yes, very challenging - although surprisingly so. I really need some stochastic flake or something like that to great non-directional glimmer.

[cjwidd]

Fun fact: when developing a glitter shader, make sure 'firefly removal' is turned off 🤦‍♂️

[GeorgeK]

Fun fact: when developing a glitter shader, make sure 'firefly removal' is turned off 🤦‍♂️

Yeah that could begin an entire development loop :)

[cjwidd]

more tests...

[cjwidd]

deliverable shader

[romullus]

Looks really good!

[cjwidd]

Thanks Romullus, I really put in some elbow grease with that one. Ended up using Substance Designer to generate some masks, and that really helped elevate the precision of the surface representation.