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Here is a breakdown of those differences: Diffuse

Here is a break down the of the alSurface shader in V-Ray so far:Īs the motivation of the alSurface shader was centered around skin, let us examine how it is different from other skin shaders such as aiSkin shader in Arnold, and the VRay Skin Mrtl, which are in fact very similar in their approach. The only parts that are missing are the refraction and translucency, which may be added at some later point. It takes into account diffuse, 2 levels of specular, and sub surface scattering. He has even created a page dedicated to alShaderĪlShaders site > V-Ray’s first implementation of the alSurface shaderīased on a strong demand from a V-Ray user, Luc Begins, on the V-Ray Forum, and the fact that the shader was now open sourced, Vlado decided to implement parts of the alSurface shader, specifically, all the parts needed to reproduce skin. He recently open sourced the shader itself, allowing others to implement it into their own rendering engines. His shaders have always been well respected by the industry, however, one element of the alSurface shader that gets a lot of people’s attention is how good it is at reproducing a skin shader.