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Use Emissive Volumes as a Light Source — A new option on PxrVolume allows the renderer to sample emissive volumes as light sources. This improves performance for scenes where the volume contributes to lighting, like fire and explosions illuminating their surroundings. The below image shows off versus on with the same settings.
Volume as light off then on
A New Analytic Cylinder Light – A new PxrCylinderLight is included for rendering things like fluorescent tubes and lightsabers.
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