Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: luthien369 on 2015-06-21, 13:35:25

Title: Glitter shader
Post by: luthien369 on 2015-06-21, 13:35:25

Hello!

I'm trying to create a shader that simulates glitter effects. In mental ray I would use a car paint material, but any idea how to get it in corona?

Some examples of the effect I'd like to get:
(https://s-media-cache-ak0.pinimg.com/736x/a4/b0/9b/a4b09bba21fa587a00aa80084e230ed2.jpg)
(https://lunarhousenails.files.wordpress.com/2013/01/cleat-glitter-gel-nails.jpg?w=642)

Thanks :)

Title: Re: Glitter shader
Post by: Nekrobul on 2015-06-21, 18:23:40

Try to use Spekle map or low scaled contrast smoke in reflection collor

Title: Re: Glitter shader
Post by: maru on 2015-06-22, 16:06:31

Here is my idea that would probably require some refining. ;)

Title: Re: Glitter shader
Post by: Nekrobul on 2015-06-22, 17:01:43

Quote from: maru on 2015-06-22, 16:06:31

Here is my idea that would probably require some refining. ;)

I thik it need bled sort of carpaint material with a glossy reflections on top.

Or it needs a castom specle bitmap (hand made)

My sugestion scene below.

(http://s9.postimg.org/h9swnprof/image.jpg)

2nd Try

(http://s12.postimg.org/41nryf6wd/image.jpg)

Title: Re: Glitter shader
Post by: maru on 2015-06-22, 17:19:40

But it also definitely needs a bump map so that the flakes reflect light in different directions. This gives the "sparkling" effect.

Title: Re: Glitter shader
Post by: maru on 2015-06-22, 17:26:37

(http://cdn.makeagif.com/media/6-22-2015/GwcssO.gif)

Title: Re: Glitter shader
Post by: luthien369 on 2015-06-22, 18:09:20

Thanks to all!
What I'm doing is using the same map (is a custom map, like a speckle) for reflection color and glossiness. The bump advice was perfect, I'm getting closer to what I'm looking for!

Title: Re: Glitter shader
Post by: Nekrobul on 2015-06-22, 18:18:18

Quote from: maru on 2015-06-22, 17:19:40

But it also definitely needs a bump map so that the flakes reflect light in different directions. This gives the "sparkling" effect.

Interesting idea with bump, got to remember that.

Title: Re: Glitter shader
Post by: romullus on 2015-06-22, 20:51:55

Here's my attempt.
For such effects would be nice to have ability to disable bump mapping affects on diffuse shading, like it's possible in Mental Ray.

Title: Re: Glitter shader
Post by: Ondra on 2015-06-22, 20:53:58

Quote from: romullus on 2015-06-22, 20:51:55

Here's my attempt.
For such effects would be nice to have ability to disable bump mapping affects on diffuse shading, like it's possible in Mental Ray.

possible with blend mtl ;)

Title: Re: Glitter shader
Post by: romullus on 2015-06-22, 20:57:06

Very interesting. Will try to figure it myself, but shoud i fail i'll cry for help ;]

Title: Re: Glitter shader
Post by: maru on 2015-06-22, 20:58:42

Quote from: romullus on 2015-06-22, 20:51:55

For such effects would be nice to have ability to disable bump mapping affects on diffuse shading, like it's possible in Mental Ray.

I thought exactly the same when trying it.

Title: Re: Glitter shader
Post by: vangel on 2015-06-27, 01:34:04

A car paint flakes material isquite easy to create: all you need is 1. a material with a noisy normal map for getting this very small planar flakes pointing in all directions, receiving those sparkling highlights plus a second material layer for the clear paint coat over it. Not at work now, so can't provide examples.

Title: Re: Glitter shader
Post by: borisquezadaa on 2015-07-13, 06:11:36

Corona scatter with very small pieces of geometry?. THE REAL DEAL!