GPGPU/FBO/gpuComputationRenderer output for Dat.gui?

Years ago I remember seeing someone that was using dat.gui to output GPGPU/framebuffer passes (noise, images etc) presumably via a little canvas or image injection however i cant find anything online anymore where someone has done this.

before i spend a bit of time rolling my own, has anyone seen an example of this lately or even done it?
thanks very much