Light visibility affects glossy rays Tweet

[adriano.ol]

How can we make a light source not visible to render, but still lit the scene (difuse materials) and be reflected without any loss (glossy materials)?

By now, visible parameters in Octane Lights and opacity parameters in emmiters materials lowers reflections in glossy surfaces.

Solutions: Octane needs a Light Path selector for tricks, like Blender Cycles.

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if I understand you correctly, you don't want to have light visible in scene, but have it's all effects visible in reflections/refractions like it's in a scene?

you can't do that...

[adriano.ol]

I can do it in Blender Cycles, and it is very usefull.

[visionmaster2]

in maxwell too !

[UnCommonGrafx]

Seems that would fall outside the realm of a "physically based renderer". You know, No light = no illumination.

[visionmaster2]

yes, its perhaps not physically correct, but it's verry usefull in packaging work to have a strong light behind a bottle by exemple.
other unbiased renderer can do that : hide emitter from camera but keep the refelction in glass.

by the whay is it possible to hide an object in reflection without hiding it from the camera ?