Rendering Grass Terrains in Real-Time with Dynamic Lighting

Vegetation | Wednesday 8 October 2008 10:51 pm

 A very advanced method to do grass rendering with dynamic lightning. There are shadows cast from each grass straw and you can paint a density map to select where you want grass and how much. The grass is obviously also animated in a very realistic way. The following is how they describe the technique briefly.

“We use a combination of geometry and lit volume slices, composed of Bidirectional Texture Functions (BTFs). BTFs, generated using a fast pre-computation step, provide an accurate, per pixel lighting of the grass.”

Real-time rendering of grass

Link to more images and the paper:
http://www.kevinboulanger.net/grass.html

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