vray grass

If you are using v-ray and don't use the VRayDisplacmentMod, then you should switch to mental ray! I use both, but v-ray is very powerful at performing geometric displacement, and is superb at creating organic objects; even grass looks good with displacement. Mental ray is good at displacing small polygons of geometry, where V-ray is good at displacing detail over large polygons. For this reason v-ray 1.50 sp1 is much more successful at creating grass for very large sites; a big plus!

The shader is simply just a VRayMat, with a grass map in the diffuse slot. Then I applied the VRayDisplacementMod modifier to the object. I instanced the image map from the shader into the displacement modifier.




VRayDisplacementMod settings:
• For something like grass it’s very important to use 2D mapping rather 3D mapping.
• I instanced the image map from the shader into the Texmap.
• I changed the amount to 4” to have taller grass blades.
• I increased the resolution to 2048 for better quality.

information courtesy http://3dsmaxrendering.blogspot.com

Mental ray shader resource

MR Materials! is a free Mental Ray materials and shader repository. Created by Russell Thomas, Founder/CEO of 3DAllusions LLC with the help of Jeff Patton, as a resource for CG artist using applications with integrated mental ray or standalone version. Special thanks to Jared Martin and Harry Bardak for MatLab translataions into Maya and XSI.


Material Iconmental ray! has been used for years by high-end production software for the game and motion picture industry. For years it has been the default render engine for Softimage XSI and in relatively recent years an integrated option in Autodesk products 3DS Max/Viz and Maya. With the aid of the CG community it is hoped that a large repository of Mental Ray materials and shaders will be accumulated.

Visit http://www.mrmaterials.com/ for a collection of mental ray shaders

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