> I think Java3D uses
> register combiners for the texture combine modes at least for the dot3 I
> would assume. (or multipass if they're not available? I think someone from
> SUN should drop a comment here?).
Java3D/OGL uses the GL_EXT_texture_env_combine extension
to implement the texture combine modes. If this extension
is not supported by the underlying opengl library, then combine mode
will not be available for the Canvas3D. There is a canvas
property textureEnvCombineAvailable that can be inquired to
check if texture combine mode is available to the canvas or
not. For DOT3, we did use the register combiner extension.
Again, if this opengl extension is not supported, DOT3 will not be
supported for the canvas. The canvas property for DOT3 is
textureCombineDot3Available.
-Charmaine
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