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Hi,
found yet another bug in matte objects. Seems for every one fixed, two new ones are spawned :/
Basically, if object material has between 0.9 and 1 glossiness, it reflects VrayLight source. Since VrayLights by default are not matte illuminators, and V-Ray does not even have concept of matte illuminators, then all the lights added in the scene are meant to represent light sources that were already there at the time of capturing plate/hdri. So if you already have a highlight on your plate, and add light source matching the one captured, you don't want to double the highlight already there.
The scene is here:MatteShadow_ReflectedLight.zip
Since the issue only appears with very high glossiness value, I am suspicious it has something to do with V-Ray separating reflection of light sources to specular reflection and secondary reflection.
found yet another bug in matte objects. Seems for every one fixed, two new ones are spawned :/
Basically, if object material has between 0.9 and 1 glossiness, it reflects VrayLight source. Since VrayLights by default are not matte illuminators, and V-Ray does not even have concept of matte illuminators, then all the lights added in the scene are meant to represent light sources that were already there at the time of capturing plate/hdri. So if you already have a highlight on your plate, and add light source matching the one captured, you don't want to double the highlight already there.
The scene is here:MatteShadow_ReflectedLight.zip
Since the issue only appears with very high glossiness value, I am suspicious it has something to do with V-Ray separating reflection of light sources to specular reflection and secondary reflection.
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