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Thomas Dinges 0639ba8ea5 Cycles / Shader graph: Fallback to Sharp closures for very small roughness.
We fallback to Sharp closures for Glossy, Glass and Refraction nodes now, in case the Roughness input is disconnected and 0 (< 1e-4f to be exact).
This way we gain a few percentages of performance, in case the user did not manually set the closure type to "Sharp" in the UI.

Sharp will probably be removed from the UI as a followup, not needed anymore with this internal optimization.

Original idea by Lukas Stockner(Differential Revision: https://developer.blender.org/D1439), code implementation by myself.
2015-11-18 18:47:56 +01:00
2015-11-18 10:52:00 +11:00
2013-12-24 22:57:27 +06:00
2014-08-08 06:00:49 +10:00
2010-10-13 14:44:22 +00:00
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