Author Topic: Glittery paint  (Read 10787 times)

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Offline Pepster3D

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Glittery paint
« on: September 30, 2013, 01:36:50 pm »
Is it possible to make a glitter type material in Keyshot?  This attached one was done in 3DS Max.  Was wondering if there was a certain way to alter the metallic car paint or something to achieve this look?   Basically really big flakes with not much of a clear coat.

Offline DriesV

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Re: Glittery paint
« Reply #1 on: October 04, 2013, 01:00:01 am »
Hi Darlene,

Currently I see no other way than to duplicate your geometry and scale it out by a tiny amount (0.002 or so...).
Then you apply a 'base coat' material to your original geometry. This material is where the glitters are glued/sprayed/... upon. Then -on the scaled geometry- you apply a reflective material and use a closely matching specular and opacity map to control specular amount and 'glitter stencil' respectively.

I attached a sample scene where I applied this method.
Admittedly, the included maps are identical and a bit crude. Ideally the opacity map should be halftone B/W and tiling can be improved...

DOWNLOAD ksp

Dries
« Last Edit: October 04, 2013, 10:19:45 am by DriesV »

Offline DriesV

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Re: Glittery paint
« Reply #2 on: October 04, 2013, 05:35:33 am »
Adding a bump map on the glitter material and enabling bloom is quite effective too.

Dries

Offline DriesV

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Re: Glittery paint
« Reply #3 on: October 04, 2013, 08:11:03 am »
Just put a IES light behind the glitter ball and placed a plane in the background.
Yellow speckles are reflective caustics from the glitter material. ;)

Render straight from KeyShot.
Just showing some possible uses for this material...

Dries
« Last Edit: October 04, 2013, 08:27:43 am by DriesV »

Offline TpwUK

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Re: Glittery paint
« Reply #4 on: October 04, 2013, 01:16:45 pm »
You have way too much spare time on your hands Dries, but I am glad for it :P

Martin

Offline Pepster3D

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Re: Glittery paint
« Reply #5 on: October 14, 2013, 07:47:31 am »
Sorry for the delayed response.  Wow Dries, that looks really cool!  Very interesting the way you set it up.  Thanks so much for sharing!  I've attached a test render I did and the file.  This is what I got from playing around with the metallic car paint shader.  Yours looks cooler!  8)

Offline Pepster3D

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Re: Glittery paint
« Reply #6 on: October 14, 2013, 08:05:12 am »
P.S. Dries-was that specular map done in Photoshop with like a Crystalize filter or something?  It works very well.

Offline DriesV

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Re: Glittery paint
« Reply #7 on: October 14, 2013, 10:19:47 am »
Darlene,

Since that download link in my previous post I optimized my textures a bit. You can download an updated scene here:
https://docs.google.com/file/d/0Bw6BI0tv_sN8R2o0cXkwamJTa3M/edit?usp=sharing
The attached image is a screenshot from that scene.

As for the textures:
I started out by applying a noise filter (uniform, monochromatic) to a white layer. Then indeed I applied a crystallize filter on the noise. ;)
Then I desaturated and inverted the layer. The result should be a single layer with white to grey flakes on a mostly black background.
I used this as the specular map.

For the opacity map I applied a treshold adjustment layer to the specular map and flattened to a single layer.

The bump map was derived from the opacity map. I copied the opacity layer into a layer mask and Ctrl-clicked the mask to define a selection for the flakes that I filled with white on a new layer. I also added a black background layer. Finally I applied a layer effect (internal glow) to the flakes layer to create a falloff for the flake bump slopes.

Dries
« Last Edit: October 14, 2013, 10:24:03 am by DriesV »

Offline Pepster3D

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Re: Glittery paint
« Reply #8 on: October 14, 2013, 10:34:27 am »
Wow, really really nice!!! I bet you render a mean automobile.  ;)

Thank you so much for sharing!  :-*