Art Professional material has a built-in ambient occlusion that overrides the global ambient occlusion setting in Shaderlight Exporter Options.
| • | On/Off – Enable Ambient Occlusion (AO) |
| • | Number of Samples – The number of AO sample rays spawned from each eye ray to determine the level of surface occlusion at the given point. |
| • | Maximum Distance – The maximum distance at which an occluding surface may be considered. Occlusion sample rays will be killed off once they reach this distance. |
| • | Factor – Controls the intensity of ambient occlusion shadows. A value of 1 makes the maximum shadowing black. A value of 0 will remove all occlusion shadows. This value can be changed interactively as a MELT change |

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