Samstag, 31. Dezember 2011

Creating Grass with Mograph and Vray

Here is the development of the grass patch (seen from a rather great distance) inside Vray. The rendering times had to stay below 5-7 minutes per frame, using GI.

(click on image to see the WIP animation)

Here are some remarks:
  • Visibility tag for distribution of the grass to set to boxes. I needed a LARGE number of instances for this sphere (approx 15000)
  • General orientation of the grass should be upwards - I used a target effector but weighted it lower than 100% to get direction - as last effector in the list.
  • 2-sided materials in Vray made the render considerably slower (factor approx 2-3) and at this distance translucence doesnt matter much.
  • Other cloners to redistribute variations and single plants.
Next step would be SurfaceSPREAD plugin, but I didn't have it at this time.

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