Reaction Diffusion Dual Mode (Composition by gtoledo3)

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Awhile back, I posted a reaction diffusion kernel that was in a Cinder library example, setup in QC to have the feedback loops that need to happen to make it work properly.

Since then, I put together this composition that reconciles the two different kernels that were in separate compositions in that thread, and done a few other tweaks so that there are multiple rendering modes that are a bit different.

I've placed each kernel in a separate RII/Feedback loop so that past frames generated by one kernel don't feed to the other kernel if one switches kernels during runtime. It doesn't look bad to do that, but it didn't seem right, hence the different macro's for each chain.

I've had report of it not working correctly (eg., at all) on some newer macs, but I've personally seen it working on the latest macbook 17" and a rocked out new iMac.