3D Basic Nodes treat their inputs as height maps from which they internally construct a three-dimensional surface. This surface is then used for a variety of 3D operations, such as illuminating it with a light source, or casting shadows.
In the example at the left a Point Light node is illuminating a height map to make it appear three-dimensional.
Node
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Description
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Caustics
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Calculates where light concentrates after it passes through a refractive surface.
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Full Light
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Shades a three-dimensional surface using full environmental lighting.
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Point Light
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Shades a surface as if it were illuminated by a point light.
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Reflect
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Reflects a base image against a perfectly reflective three-dimensional surface.
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Refract
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Refracts a base image through a refractive surface.
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Shadow
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Calculates the shadows that an irregular surface would cast on itself if it were illuminated by a point light.
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Stereogram
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Creates a stereogram illusion where a 3D surface is encoded within a repeating pattern.
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Transmit
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Projects an image through a refractive surface.
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