FacingRatio v1.0

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Contributor: lucien Fostier
create facing ratio render from a normal pass.
5.0, 5.1, 5.2, 6.0, 6.1 or later
Linux, Mac, Windows
24 Feb 2011

This gizmo will render a facing ratio pass using a normal pass.It internally uses a dot product between a built-in render of camera normal and your normal pass.

You can tweak the result using a falloff slider and you have option to mess with your incoming normal.

The built-in render of camera normal should dynamically adapt to the resolution of your rendered normal pass.

Please visit my website at http://lucienfostier.com and send me some feedback.

v1.0 subject to and willing for improvements :-)

Please send me some feedback
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# Santiago Svirsky 2012-05-18 14:38
Looks good. How about a Camera input to plug in a custom camera?
# lucien Fostier 2012-08-23 02:53

I think I need to edit my gizmo a bit to provide a custom cam, Ill post an updated version soon.

Thanks for the help
# IDontWant ToRegister 2014-04-03 20:20
If you already have a camera normal pass.. Then the blue (z) channel is the dot product from the camera...

This seems uneeded, Am I missing something here?
# Indrajeet Sisodiya 2018-08-28 17:02
It doesnt seem to be working for me or am i missing something? To test it, i created a sphere, a camera, put the camera at a good distance and connected these to scanline render, set shader to output vector and ticked surface normal and exported to a channel called N. Connected your gizmo and selected channel N and viewed it but I see black in rgba. Tweaking normalize data or falloff doesn't change anything, i see nothing.

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