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anim8ruk
02-05-2006, 07:39 PM
Hi all... I'm new to rendering and i'm trying to create a clay effect when rendering. There are lots of people on here who render stuff out looking like this. I was wondering if anyone can explain how it's done or where i can find tutorials on this. I've heard people mention ambient occlusion and GI Joe..... is this anything i need to create this?? Please help.

CaptainObvious
02-06-2006, 07:13 AM
This is for 3dsm, but it does cover some basics for ambient occlusion.
http://www.christopher-thomas.net/pages/free_tutorials/tut_ambient_occlusion_shader/ct_tut_mentalray_ambientocclusion_shader.htm

Some more ambient occlusion basics.
http://www.neilblevins.com/cg_education/ambient_occlusion/ambient_occlusion.htm

This is for Lightwave, but it still covers the basics of using a backdrop and global illumination to light your scene.
http://www.newtek.com/products/lightwave/tutorials/rendering/globalillumination_skydome/globalillumination_skydome.html

cpan
02-06-2006, 08:02 AM
the key elements are FG (or ambient occlusion) and a white environment.

1. Render Settings window > Image Based Lighting section > click on the Create IBL button. Now set the IBL mode to texture and set the texture color to white (you can set the V - from HSV - to higher than 1 values to get whiter results).
2. Render Settings window > enable Final Gather, enable the Final Gather View (Pixel Size) and set the FG min/max to 2-20. Also increase the FG Filter to 2 and choose an appropriate FG rays number. Oh and to get better images, enable Secondary Diffuse Bounces, then set the FG Depth/Reflect/Refract to 3/3/0 (this means 3 secondary bounces) and also set the Shadow Trace Detph to 4 (it's under the Raytrace section)
3. Render Settings window > disable default light
4. select you geometry, then right click in the viewport > Assign Materials > New material > DGS material. In the DGS Attribute Editor set the Diffuse to almost white, and the Glossy and Specular to black (V 0)


render

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