Re: fbsubtexload ?

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Angus Dorbie (dorbie++at++bitch.reading.sgi.com)
Thu, 29 Feb 1996 09:41:03 +0100

So what was the question ? :)

Rgds,
Angus (the other one).

On Feb 29, 9:02am, Angus Henderson wrote:
> Subject: Re: fbsubtexload ?
> I know it's odd a SIlicon Graphics person asking this question on a public
Mail
> list but one of you is bound to know more than I do today...
>
> I use IRIS GL fbsubtexload in my distortion correction Performer 1.2 app.
> I am keen to try it on an infinite reality but I have not yet found a machine
> that responds sensibly to
>
> man glCopyTexImage2DEXT or
> man glCopyTexSubImage2DEXT...
>
> I use fbsubtexload with the "special modifier" flag of 1, which although
poorly
> documented seems to allow transfer of packed 16 bit texels. If anyone can
shed
> light on the OPENGL equivalent that would be nice.
>
> I have been cautiously told to expect around 80 M texels/s for framebuffer to
> texture RAM copies. - thats fbsubtexloads not subtexloads.
>
> distortion correction for twisted minds...
>
> ANgus
>
>-- End of excerpt from Angus Henderson

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