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sphere illumination or ambient lighting.

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Hello.  So I'm making this game that is set on a planet.  The whole planet is rendered with about half a million faces.  I'm using a directional light; however, there is a specific rim of lighting effect that looks optimal and shows off the contuors of the planet nicely.  If I use an ambient light then the effects of face normals are disregarded.  Does anyone have proposed ideas on how to light a whole sphere uniformly.  Showing off contours and what not?

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If I use an ambient light then the effects of face normals are disregarded.  Does anyone have proposed ideas on how to light a whole sphere uniformly.

Not sure what you are trying to do. Full ambient lighting will assume every face receives all the ambient light, so if your ambient term is 100% then face normals won't matter.

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