This site shows my latest renderman related work.
This Shader was written as part of my Major Animation Project that I had to take during my MSc Computer Animation at the University of Bournemouth in 2005. My main aim was to learn the Renderman Shading Language and create a photorealistic tree bark shader.
For a complete documentation see this Technical Report. In order to create tree bark you need to download the displacement shader Bark2.sl or the texture file shader Bark_Texture.sl as well as the surface shader Bark_Colour.sl . In order to compile the shaders you need these header files. The surface shader generates its color value depending on the displacement shader. Unfortunatly this value needs to be in a range of 0 - 1. I created this script normalrange.pl that will calculate the min and max value of any specified value in the displacement shader which can be passed to the displacement shader to normalise the hight of the created displacement.
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Base Voronoi |
fBm on the edges |
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Voronoi fractal |
Turbulence |
Click for a small turntable I am working on a lighter render!
The rest is just some sample images rendered with the Bark2.sl displacement shader and the Bark_Colour.sl
