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Doubles or Floats?

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So, is one or the other faster as far as OpenGL goes? It seems like most samples and documentation use floats. For some reason, I want to use doubles.. but I don''t want to introduce an obscure perf problem that would be a pain in the ass to go back and change. -Brannon

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Guest Anonymous Poster
Depends on your architecture.

If you switch the FPU to 32bit mode and use floats, performance will always be better. And OpenGL uses floats internally, so I think it''s a good idea to stay with floats for the graphics engine.

Things might be different with a physics engine though, doubles may come in handy for the extended precision.

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