float vs double on graphics hardware

Question

I\'ve been trying to find info on performance of using float vs double on graphics hardware. I\'ve found plenty of info on float vs double on CPUs, but such info is more scarce

Answer 1

Doubles are not supported for rendering until DX11: (ie Shader Model 5)

http://msdn.microsoft.com/en-us/library/ee418354(VS.85).aspx

I suspect OpenGL will be the same.