Green screen
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@Unfenswinger
thanks for the link. WIll look into this next week. -
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For Quartz Composer ninjas here's a nice tutorial how to setup GLSL shaders in QC,
[http://destroythingsbeautiful.com/2013/01/10/converting-glsl-shaders-for-use-in-quartz-composer-and-vdmx/](http://destroythingsbeautiful.com/2013/01/10/converting-glsl-shaders-for-use-in-quartz-composer-and-vdmx/)I'm new to the RT performance world so apologies if this is old news.