Re: RGBA question

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Dave Akers (dla)
Thu, 6 Jan 2000 15:38:01 -0800

That's correct.. If the disk data format is LUMINANCE (or INTENSITY), the
data can be replicated to LUMINANCE_ALPHA or RGBA external formats..
whereas if the disk data format is RGBA, the external format must be RGBA
as well..

Dave

On Wed, 5 Jan 2000, Mark Davey wrote:

> Hi
>
> It is true that disk data with format LUMINANCE and type UNSIGNED_BYTE
> may be stored externally with RGBA or LUMINANCE_ALPHA format and type
> UNSIGNED_BYTE.
>
> Is there any circumstance in which a disk format of RGBA could be stored
> as anything other than RGBA externally?
>
> Mark....
>
> --
> From: Mark Davey
> Dept. of Medical Physics, UCL.
>
> TEL: +44 (0)171 915 1673.
> FAX: +44 (0)171 837 9279.
>
> Institute of Laryngology and Otology,
> 330 Gray's Inn Road,
> London.
> WC1X 8GE.
>
>
>

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