Thu Jan 17, 2019 11:50 pm
Looks very useful at a quick glance. Some personal favourites below.
Choice of inputs includes cameras and Spout (I'm feeding it from Magic's Spout 2).
The output window can also be used to monitor Input, individual rendering passes and Alpha.
Can import from GLSLSandbox and (supposedly) Shadertoy, although I just get an error message when attempting the latter.