High IMPACT and Transparency

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Mark Baranowski (baranowski++at++marklynn.demon.co.uk)
Mon, 11 Mar 1996 17:29:01 GMT

We have just upgraded one of our machines to High Impact graphics and
are experiencing problems with polygons textured with Alpha components
(i.e. IA, RGBA).

The problem is that polygons containing alpha in their texture
disappear when viewed through another polygon with alpha.

We are using Irix 5.3 All Indigo2 IMPACT & Performer 1.2

I know the High Impact (1 TRAM) can only handle 4 bit component
textures. Is this causing the problem, or is it related to using
Performer 1.2 on an IMPACT?

Has anyone experienced a similar problem, or know how to overcome it?

Thanks in advance.

  
Mark Baranowski at work (baranowski++at++marklynn.demon.co.uk)
Pera, VR Division. Melton Mowbray, Leicestershire. UK.
Tel: +44 1664 501501, Fax: +44 1664 501553

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