Snow on Rocks Shader/Environment Blending Shader

 

This is actually an environment blending shader that blends any two kinds of environment texture based on world position. The Snow on rocks is just only one of the many effects that this shader is able to create. It can also do sands, rains, moss, dirt, and more. The overall purpose is to mix all these different environments without actually painting on assets one by one.

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Nodes Overview
Z to world space

The camera vector is transformed into world space vector, and by connecting it with the mask, only the z value is controled

Intensity

The blending effect can be controled by the add value (where the bledning is happening)and the contrast level can be controled by power value