Textures w/ alpha channel

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Amaury Aubel (aubel++at++lig.di.epfl.ch)
Mon, 26 May 1997 17:02:22 -0600

Hi,

I have a pfGeoSet which has a a 4-component texture and a material.
What I want is the texture to show through for the pixels where alpha = 0. And
in this case the material to be displayed.

When I set the texture environment mode to PFTE_MODULATE, the GeoSet is
textured and shaded but does not show through, which is compliant with the man
page.
If I set it to PFTE_DECAL, the GeoSet is textured and does shows through but it
IS NOT shaded. Why?

Is there a way to work around this?

Amaury.

-- 
+----------------------------------------------------------------------+


  Amaury Aubel					aubel++at++lig.di.epfl.ch
  EPFL-LIG, 1015 Lausanne/Switzerland           Fax: +41 21 693 53 28
  Swiss Federal Institute of technology, Computer Graphics Lab


+----------------------------------------------------------------------+


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