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Mapping

Channel

Select the simulation channel that you want the shader to use as input.

Smoothing

Blur the field before using it as shader input.

Mapping

This function curve (f-curve) allows you to map the input values to an intensity curve before they are used to determine the smoke's color and opacity. A linear 0 to 1 gradient will leave the values unchanged.

To edit the Mapping, click on the curve to open the f-curve editor. See the section on using the f-curve editor for details.

Separate Opacity

These parameters let you use a separate input channel for smoke opacity. If you use it, the first channel, smoothing and mapping parameters will only control the smoke color.