Nukepedia

oficial paper : http://goo.gl/SF0HA 2Plugins CloudLight> Create a 3D geometry cloud based in a point pass, to allow lighting and rendering with built-in lights and scanline. Also could use luma information on 2D footage as depth map information. CloudPhong > Same as Phong but picks the vertex color attribute to calculate the current surface color.

Updated: 16 February 2012

Author: hassanvfx

Compatible Nuke versions: 6.0 or later

Compatibility: Linux 32, Mac 32

Description Licence Download

This weekend i put my hands on the Nuke Development Kit. I remember that i few time ago some friend show me an amazing video form vfx guide showing a mate from image engine , that was using a plugin developed around 'district 9' to allow point-cloud 3D relighting on nuke.

http://media.fxguide.com/fxguidetv/fxguidetv-ep071.mov

I did a quick research and i found around some techniques using GL_POINTS to create the cloud points, but unable to render on scanline for the same reason.
As far as i can notice, scanline render works as a surface shader, and is unable to handle hardware like attributes like GL_POINTS .
So im not sure about how the guys of image engine did it, but i came with the idea of instancing little 3D pixels, or cubes instead of points.
It works very well, but quickly turns a bit hard to handle on non high-end computers. So i did some optimizations, like avoid handling non-alpha pixels, and allowing user to select wich faces of the pixel-cube ( aka:cloudlet ) want to have visible.

With this approach is posible to use standar lights and render through scanline.

Also plugin allow using 2D footage and using average luma as a depth map.

Watch the videos !
vfxtalk > http://www.vfxtalk.com/threads/34996-CloudLigth-3D-Surface-Relighting-Nuke-Plugin.-%28-open-source-%29.
repo > https://github.com/randominteractive/cloudlight
video > http://www.youtube.com/watch?v=LJ39zm1Ehzo
video > http://www.youtube.com/watch?v=eWULiz9u5lg
paper > Tecnical paper cloudLight
OSX build > OSX VERSION + EXAMPLES

Open Source
http://goo.gl/MAeiy

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