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[qbproger]

I'm not sure exactly what they're called (maybe color models?), but collada supports different shading/lighting/color models than are supported in Xith3D.  If these map to what I'm asking for, I'm not sure how they would map.

In ColoringAttributes I see these:

Code:

static ColoringAttributes.ShadeModel FASTEST
static ColoringAttributes.ShadeModel NICEST
static ColoringAttributes.ShadeModel SHADE_FLAT
static ColoringAttributes.ShadeModel SHADE_GOURAUD

I don't know if these map to what I'm looking for or not.

I'm looking for:

• constant
• lambert
• phong
• blinn

[Marvin Fröhlich]

I don't know constant, lambert and blinn. But Phong is very well known. I guess, the other ones are similar. Phong is only supported through user-defined shaders. OpenGL doesn't support that natively. The same will be true for lambert and blinn. Maybe constant is an alias for flat shading. Possibly one of the other two remaining ones is an alias for gouraud.

FLAT means, that the color is constant over the whole primitive. GOURAUD means, that the color is linearly interpolated between the vertices over the primitive's surface.

FASTEST and NICEST are simply aliases for FLAT and GOURAUD.

Does that help?

Marvin

[qbproger]

Ok, a collada file let's you specify any of the shading types from the list I specified.  I was just curious how to render them.  Since they all contain emission, diffuse, specular, etc... in any combination, I guess I can just set what is passed in on the material that's all that's supported.

[Marvin Fröhlich]

Ok, a collada file let's you specify any of the shading types from the list I specified.  I was just curious how to render them.  Since they all contain emission, diffuse, specular, etc... in any combination, I guess I can just set what is passed in on the material that's all that's supported.

Yes. If I was assuming right, and the 'constant' keyword maps to OpenGL's flat shading, I would simply use GOURAUD for all the other ones and when Xith has an integrated phong shader one day, we can change the mapping.

Marvin