[RESOLVED] Shader: Glitter / Sequin

Corona Corona for 3ds Max Help Required
1

Looking for assistance with a glitter shader. I have seen some of the [previous](https://forum.corona-renderer.com/ Glitter shader ) 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?

2

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

3

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.

82178718_619225445493644_5284750326203678720_n.jpg
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4

Here are some tests

test_1.jpg
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test_2.jpg
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test_3.jpg
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test_4.jpg
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test_5.jpg
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5

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

6

Thank you :smiley:

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

7

Fun fact: when developing a glitter shader, make sure ‘firefly removal’ is turned off :man_facepalming:

8

Yeah that could begin an entire development loop :smiley:

9

more tests…

test_shader_4-32.jpg
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Baroque_v7_alt_2.PNG.jpg
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10

deliverable shader

11

Looks really good!

12

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.