Clipgen and alpha channel in clip textures

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From: Simon C Mills (simon++at++wgs.estec.esa.nl)
Date: 12/13/2001 01:44:00

Hi Performers,

this is not strictly a Performer question but I wouldn't know where else
to ask.

I'm using Clipgen (version 1.1) to generate clip textures to be used in
a performer application. I wanted to use an alpha channel in my clip
texture just like in a normal texture. However, it appears clipgen masks
the RGB values in the produced clip texture tiles with the alpha channel
ie. where alpha is 0, RGB values are set to 0,0,0 and are not left at
their original values as I want. I tried on the Inset tab to set Alpha
Mask to Feather Edge with 0 pixels and also to give an Alpha Mask image
that was pure white. Neither of these helped. How can I tell clipgen not
to do this?

Regards, Simon
_______________________________________________________________________

Simon Mills
Modelling & Simulation Section (TOS-EMM) Tel: +31 (0)71 565 3725
European Space Agency (ESA/ESTEC) Fax: +31 (0)71 565 5420
Postbus 299, 2200AG Noordwijk e-mail: Simon.Mills++at++esa.int
The Netherlands http://www.estec.esa.nl/wmwww/EMM
_______________________________________________________________________

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