Author Topic: Can Filmic highlights on the VFB be used to help with AA?  (Read 2173 times)

2017-02-14, 20:18:45

SharpEars

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Is the "Filmic Highlights" setting applied pre-AA or post-AA? I just discovered that this setting does a very good job of reducing blown-out highlights (e.g., speculars). The big question is whether or not this setting can help with anti-aliasing high contrast transitions between dark and bright pixels in a manner similar to clamping. I ask because "Filmic Highlights" only affects the brightest parts of the scene (in the same way that Whites can be selectively toned down in Photoshop, without affecting darker pixels). Clamping, on the other hand, seems to indirectly affect all pixels in the scene, by reducing reflections and GI from very bright light sources. I much prefer Filmic Highlights to Clamping, in general.
« Last Edit: 2017-02-14, 20:22:10 by SharpEars »

2017-02-16, 13:30:48
Reply #1

maru

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Filmic highlights is a post-rendering effect - it can be easily enabled or disabled.
It works similar to highlight compression. "Darkens" only the brightest areas. So yes, it can be used to solve problems with jagged edges.
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2017-02-16, 16:31:30
Reply #2

SharpEars

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Filmic highlights is a post-rendering effect - it can be easily enabled or disabled.
It works similar to highlight compression. "Darkens" only the brightest areas. So yes, it can be used to solve problems with jagged edges.

If it's post-rendering it doesn't help much with AA, because the AA algorithm can't use the darkened whites in it's "smoothing" calculations. It just reduces the noticability of the jaggedness by reducing contrast.