Likewise, because color indices, edge flags, and weights are always specified with a single value, IndexPointer, and EdgeFlagPointer also have no size argument. The parameter to WeightvARB is the current for the weight array. When blending is enabled, the vertex is transformed by multiple model-view transformations. The affected matrix is determined by the current matrix mode. The rescale factor for each unit is derived from the modelview matrix for that unit.
Normalization is applied to the transformed, blended normal.