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For the first time, a renderer provides only one sampling control for all the lighting components: specular, diffuse and light. By adjusting only one "Shading Samples" value, the artist can reduce noise without having to fiddle around with per-material or per-component sampling. 3Delight uses space space varying heuristics to select the best best element to sample (specular, diffuse, light) by respecting to total allotted rays budget.