Here's a simple version of something i made way back in the day in Unreal - Up Vector snow. This works similarly to the RGB masking from the last shader, except you don't have to paint a mask. Instead, the shader creates a mask based on the world normals, applying snow to all faces facing upwards. I also included a vertex color mask to paint out areas. This will allow you to prevent snow from showing up in places that don't make sense, like underneath an overhang or inside a building. Finally it includes a layer of ice that is independently tweakable and paintable.
This makes it almost as robust as my old shader. I decided to not include stuff like wind direction and heat sources, as it requires a bit of scripting and the visual effects are somewhat minute. Still, if you've been following along so far i'm pretty sure you could figure it out.
This makes it almost as robust as my old shader. I decided to not include stuff like wind direction and heat sources, as it requires a bit of scripting and the visual effects are somewhat minute. Still, if you've been following along so far i'm pretty sure you could figure it out.
Maya CGFX File:
| phongnormaldirectionalmask.cgfx |
Unity SHADER File:
| phongnormaldirectionalmask.shader |
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