I don't (want to) know whether I'm too stupid to understand or it's Visual Studio's fault, but I can't seem to get my effect, which uses two layer parameters, to work.
I always like to blame the compiler first. ;)
Agreed, it's not made terribly obvious throughout the documentation.
During PF_Cmd_RENDER, your input layer is always there; any other layer params need to be checked out.
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