Re: Double precision question ...

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From: Angus Dorbie (dorbie++at++sgi.com)
Date: 06/07/2000 17:47:02

No, this won't work.

The matrix math in the pipe is single precision.

You should check the archives for the many times this has come up
before.
There are detailed explanations of how to accomodate large databases.

Cheers,Angus.

Jean-Sebastien Dion wrote:
>
> I need the extra precision provided by the double float type when I use
> gluLookAt() and glTranslated(), so that the ModelView matrix is updated
> with all available precision.
>
> However, can I assume the operations on the ModelView matrix will always be
> done in double precision (as requested) or some OpenGL drivers can be
> stubborn and do all calculations in float.
>
> Thanks.
>
> J.-S.
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