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The Incandescence Light allows editing the incandescence attributes of controlled objects in the GafferThree node. It also The difference between a mesh light and an incandescent light is that the later directly controls the incandescence parameter of the materials applied to the controlled objects. One incandescent light can control as many such object/materials as desired. Another noteworthy difference: this light also allows the incandescence to be output in its own Multi-Light layer in DlSettings.
The Incandescence Light in the GafferThree node.
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These parameters act as multipliers of the controlled geometry's incandescence color. The original material's Incandescence Intensity parameter will be ignoredmultiplied by this value.