Dear corona team and forum users,
I am not sure if this question was asked before—I made a quick search and didn't find anything. If this question already exist somewhere, please delete this thread.
When I'm using coronaLight material (emit light active, corona default settings) and try to play with directionality, I get noise in my renderings even in simple situations when I'm using simple materials and not high directionality values for light geometry. The noise also persist on simple material preview swatches in material editor.
Please look at attached images:
01-directionality noise.jpg—comparison between material previews with different directionality settings. All samples have intensity 5, but even at 1 we can clearly see “splotchy” noise pattern
02-no directionality.jpg, 02-directionality.jpg—simple example how it looks with and without directionality.
Please, can someone clarify what's going on, and how can we avoid situations where we need to set the directionality for objects with coronaLight materials?
Best regards.