Problem with normal mapping?

Blitz3D Forums/Blitz3D Programming/Problem with normal mapping?

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John Galt
 #1
swift- thanks very much for that detailed response.

I'm intrigued by the idea of using a cubic environment map to set the required vertex colours (tangents). Is a cubic environment map just a cube (6 sided) map? Could you please try to explain this to me one more time as I'm not sure I wholly understand it. Why is a cubic map needed?