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particle shader building

Hello there.

I am new to houdini and have zero shader building experience. I am trying to build a shader that gives the look of ash on particles. I have a battle field scene with smoke and the likes flowing across it.

So the particles needs to have random noise on it. This noise needs to effect the alpha as well. Then needs to fade off as it reaches the edge of the sphere relative to the camera.


Cheers :)

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