Strenghth Maps: Colour or Grayscale? render resource question.
Not getting a response on CGTalk, so I'm hoping someone knows the answer.
I applied an ambience strenth map to a background that was 24 bit, basically I pushed the contrast and got a good effect after I applied it.
My question is this: IF I had made it Grayscale, would it have taken less resources at render time, or does it matter at all?