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Old 10-04-2013, 11:58 AM   #1
tomjelfs
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Tom Jelfs
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Pink and Blue render type???

I've been doing CG as a hobby for about 12 years now but recently watching some vfx breakdowns on Youtube I've noticed a lot of the Pink/Blue render levels. I'm going to guess they must be Normals but they are used a lot in smoke sims etc. Are they a different type of depth compositing?

Can be seen here at 1.1l and 3.25



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Tom
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Old 10-04-2013, 07:47 PM   #2
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Bryan Ray
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Both of those examples are normals passes and are useful for relighting.

Obviously, smoke isn't likely to have a normal, but it's possible you're seeing a utility light pass, or a world position, or motion vectors, or any number of things that didn't immediately occur to me. For instance, I was working on a FumeFX nebula recently for which I cranked the opacity way up and then used an RGB light setup to create some faked normals that I could use to relight in comp. It turned out mostly yellow and green, but if I'd rearranged the lights, it might have been magenta/cyan instead.
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Old 10-04-2013, 08:45 PM   #3
tomjelfs
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Ah ok thanks, so do you purposefully set colours to create this effect or is it simply a type of render pass?

Here's an example of the smoke I mentioned


http://vimeo.com/m/54488977
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Old 10-04-2013, 08:45 PM   #4
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