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ChaosGroup / blender_with_vray_additions

Blender with patches for V-Ray *.vrscene export
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Bloom doesn't respect color mapping settings. #217

Closed michax closed 7 years ago

michax commented 7 years ago

When using color mapping, it looks like it's clamping precision of Bloom effect. In previous versions I was able to get strong bloom even in sun + sky lighting setup. Night it's impossible.

Color mapping settings: Reinhard: Multiplier: 0.1 Burn: 0.1

Same happens with other modes and same ratios.

michax commented 7 years ago

Ok, playing with Burn ratio allowed me to get more pronouced bloom. It seems like issue with Vray itself design for bloom. Some values are effecting bloom correctly (like manual change of exposure/curve), however color mapping seems to clamp the precision of the effect and what we can do with it.

So if I clamp both Multiplier and Burn to 0.1, then no exposure change will bring it on.

Leaving it as reference for others.