[request] sampler2d parameters for effects

Hey Ashley , It'd be nice to define sampler2d parameters in our effects in addition to the current float/percent parameters. Along with ability to get/set the data of those textures through events, similar to setting a float/percent.

A lot of uses for using sampler2d to store data, and can then create more interesting effects.

Surely it wouldn't be too difficult to add??

Thanks.