geneome » Occlusion http://www.geneome.com Just a guy, drifting. Sat, 28 Aug 2010 21:34:09 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Image Planes Part 2 (An Occlusion Plane) http://www.geneome.com/2008/10/12/image-planes-part-2-an-occlusion-plane/?utm_source=rss&utm_medium=rss&utm_campaign=image-planes-part-2-an-occlusion-plane http://www.geneome.com/2008/10/12/image-planes-part-2-an-occlusion-plane/#comments Mon, 13 Oct 2008 02:39:44 +0000 Eugene http://www.geneome.net/?p=471 ]]> Okay, so I went a bit off the track on this one. It’s loosely an image plane video and more of a “how to do an occlusion pass inside a shader then put it in a plane” video. So I’m not sure if I should keep it under the “image plane” heading or create some new one. Either way, this topic was a weird one I was wrestling so I did a lot of forum searches and made lots of mistakes (basically writing my VEX poorly). So I thought I would at least show my results so people could see what I found. What’s made this more interesting is looking into the different occlusion functions and trying to figure out why they differ and what they really give you.

Edit: In this video I use a subtract node to subtract the occlusion output from a constant float (1). Houdini user Jason M. pointed out that I could have used the compliment VOP instead which does the same thing in one node rather than the two I used. So remember that the compliment VOP is around!

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