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ive got a scene with lots of plastic bubbles (thin shells) with coloured lights inside (in this case lightmtl with direct illumination enabled, but the same applies to vraylights)
some of the bubbles are totally clear (i.e. no glossy refraction)
some have a slight blur to the refraction.
the lights behave totally differently depending on if there is glossiness in the refraction or not.
with glossiness at 1, cranking the brightness of the light brings it towards white, as you would expect.
with anything other than glossiness 1 (even 0.99) the light stays totally clamped, no matter how much the multiplier is cranked. this not only looks totally unrealistic, but leads to a very odd difference visually between the various bubbles. client does not like it.
why on earth is there this difference?
glossiness1:
glossiness 0.99:
some of the bubbles are totally clear (i.e. no glossy refraction)
some have a slight blur to the refraction.
the lights behave totally differently depending on if there is glossiness in the refraction or not.
with glossiness at 1, cranking the brightness of the light brings it towards white, as you would expect.
with anything other than glossiness 1 (even 0.99) the light stays totally clamped, no matter how much the multiplier is cranked. this not only looks totally unrealistic, but leads to a very odd difference visually between the various bubbles. client does not like it.
why on earth is there this difference?
glossiness1:
glossiness 0.99:
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