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• Rendering Techniques > 3dsmax Vray Dirtmap Tutorial (Posted By: mayafishing)
• :: Post Date: 2007-05-23 11:28:19 [Post Comment] [Post Articles]

• 3dsmax Vray Dirtmap Tutorial Software: Autodesk 3dsmax Author: Niem Akhtar Contact: info@niemakhtar.co.uk URL:http://www.niemakhtar.co.uk/ Introduction This tutorial will be focusing on the dirtmap material which is included in vray version 1.5. I always like to use this material in my renders to add a little more realism. You need a basic knowledge of 3ds Max and vray to complete the tutorial. Setting up the shader Download the support files from Here Load the scene file and create a new Vray matarial. Assign the material to the building walls (i have grouped the walls of the front building so the windows are seperate). [Click Here for Larger Image] Add the VrayDirt shader to the diffuse slot. [Click Here for Larger Image] The default options are displayed for the dirt material. Map a bitmap file texture to the radius slot and link the supplied dirt.jpeg file (set its U and V tiling to 2). Map a bitmap file texture to the unoccluded slot and link the supplied diffuse.jpeg file (set its U and V tiling to 2). Test rendering the scene Render the scene to get a quick preview You should get an image like the one above, notice there is very little dirt. Increase the radius to 2m and render again. Increasing the radius will make the building more dirty Final rendering Set the render setting as follows to produce a better quality image Image width/height: 800 x 600 Image sampler: adaptive QMC Antialiasing filer: Mitchell-Netravali Adaptive amount: 1 Noise threshold: 0.005 Min samples: 8 Global subdivs: 2 The final image [Click Here for Larger Image] Conclusion Final note You can plug in falloffs and shaders into the unnoccluded/occluded color slot to build more complex shaders. For more information about the vraydirt material you can visit the online documentation. http://www.spot3d.com/vray/help/150R1/vraydirt_params.htm http://www.spot3d.com/vray/help/150R1/examples_vraydirt.htm I also used the following tutorial to help me setup the vray camera and sun. http://www.vrayelite.com/camsky.php About the author I graduated in 2005 after completed a degree in computer animation and special effects and am currently working as a freelance 3d artist/visualiser. Some of my latest images can be viewed on my cg portfolio. Download Download Scene File[624KB]

• Comments: (Currently there are 1 comments.)
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• • [Anonymous]dollah_3d ( 2009-02-20 16:09:39 ) [Post Comments]

  • this is good stuff

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