Houdini 17.0 Nodes VOP nodes

Pyro Shader Core VOP node

Provides the core functionality needed to build a high-quality volumetric shader.

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This node is the foundation on which the Pyro Shader is built.

Tip

Create a Pyro Shader node and take a look into it’s VOP network to see how the this node can be used to build a full-featured, production-ready shader.

Parameters

Scattering Phase

Controls the direction in which light entering the volume is scattered. At the default of 0, light scatters evenly in all directions (isotropic scattering). Positive values up to 1 scatter more and more in the same direction as the incoming light, Negative values down to -1 scatter backwards.

In reality, this effect depends on type of particles suspended in the volume.

The figure below shows the effect of various values on smoke lit from behind by a green light:

Smoke Brightness

Controls the overall smoke brightness. This is multiplied with the Smoke Color.

The figure below shows the effect of a relative change by various factors:

Smoke Color

Controls the overall smoke color.

Emit Brightness

Scales the emission intensity coming from the emit input.

The figure below shows the effect of a relative change by various factors:

Emit Color

The color of the emissive component.

Shadow Density

Controls the overall density of shadow’s cast by the smoke.

The figure below shows the of effect various values:

Shadow Color

The color of shadows cast by density the volume.

Inputs

density

The smoke density, usually coming from a volume.

emit

The emission intensity, usually coming from a volume.

VOP nodes