your contribution is already very generous, and i hesitate to ask for even more from you
but being the complete shader noob that i am, i feel the need to ask anyways.

would you (please) consider putting up a small demo that uses this method?

i think that between the demo and the explanations found here i may actually be able to
put the pieces together... and there are probably many others like me.

either way, thank you for this help.