[osg-users] Adding an alpha channel to a texture?

[Himar Carmona]

Hi,

 i think you are asking for the *texture blending* functions. In OSG look at
BlendFunc, BlendEquation and BlendColor. Sure there is a combination of the
blending factors to achieve the effect you want. See osgblendequation. You
can also program a shader of course. Another trick could be applying by
default a transparent texture (at a scene node that is parent of your
geometry) when you don't have any and apply the texture to your geometry
with Override on.

Hope this helps.
Himar.
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