A debug tool useful to see what's wrong with your geometry.
Parameters
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Blending Mode: How this vertex referential gets blended
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Renderer Depth Settings: Depth-buffer related settings
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Referential of the vertex referential
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Use cross normal of the vertex referential
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Length of the vertex referential
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Tangent of the vertex referential
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Normal of the vertex referential
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Bi-tangent of the vertex referential