Directional Scattering OSL Shader

[翻译] : 我编写了一个方向性散射着色器（OSL），它能够根据模型的几何形状来散射图像。在着色工具包中，这是一个相当有用的工具，但需要一些设置。这个示例的输入是一个简单的曲率映射。这个工作流程应该适用于所有支持OSL的光线追踪器。

I wrote a directional scattering shader (OSL) that is able to scatter images relative to the geometry of the model. It_s a pretty neat tool in a shading toolkit, but there_s a little setup involved. The input for this example was a simple curvature map.

This workflow should work for all raytracers that support OSL.
http://zenopelgrims.com/directional-image-scattering/