Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Nate101 on 2019-12-20, 06:50:42
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I have a standard CoronaMTL with reflection level set to 1.0 and the Fresnel IOR set to the default 1.52. I applied it to a sphere and rendered with no lights or reflections in the scene. This is what the CShading_RawComponent--Reflection element looks like.
I'm trying to recreate the RawComponent output above in a separate CTexmap element but can't get a perfect match. When I create a generic fresnel falloff map with 1.52 IOR and plug into CTexmap I get a notably different output in the VFB (see below).
Am I doing something wrong here or are max's built-in fresnel curve and corona's internal fresnel curve different from one another? I dug up this thread from a few years ago that seems to indicate they are indeed different. If so, is there a way to get the Corona curve into a CTexmap element?
https://forum.corona-renderer.com/index.php?topic=8214.0
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interesting looks like a curve difference, what's the end goal?
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interesting looks like a curve difference, what's the end goal?
Ultimately I need to reproduce the Corona falloff in the beauty pass (without using render elements), but for testing purposes I find it easier to just plug into CTexmap. Surprised there isn't a "CoronaFalloff" map in the same way there is a CoronaColor, CoronaBitmap, etc.