Re: pfLayer & overlapping geometry

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Marcus Barnes (marcus++at++multigen.com)
Thu, 9 Jan 1997 10:25:42 -0800

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On Jan 9, 12:20pm, Peter Schulze wrote:
> Subject: pfLayer & overlapping geometry
> Hi performers,
> I'm using a modell containing a structure of 3 layers.
> This structure shares 1 large geometry and 3 textures (RGB).
> Each layer got a separate value for the transparency-material-component
^^^^^ ^^^^^^^^^^^^
... important clues.

1. pfLayer attempts to impose a well defined draw ordering of its children.
2. Transparent geometry is CULL sorted separately from opaque geometry.

> to support a blending of the different textures.
>
> -->But when I take a side view and there exist some geometry parts
> overlapped by others in the foreground (and both surface normals point
> to the eye) only the texture of the base-layer will be rendered on the
> geometry of the foreground, INSTEAD of the texture of the decal-layer.
>
> Does anybody know what's going wrong ?

pfLayer draw ordering does not work correctly when the pfLayer's decal geometry
has transparency enabled. There is a conflict between the transparency sort
and the pfLayer logic. This is a known Performer bug.

Regards.

--
+ Marcus Barnes, Technical Staff        mailto:marcus++at++multigen.com +
+ Multigen Inc.                         http://www.multigen.com    +
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