Native bindings to the ARB_half_float_vertex extension.

This extension extends the usage of the half-precision (16-bit) floating-point quantities introduced in ARB_half_float_pixel for usage in specifying vertex array data.

This extension allows applications to use half-precision floating point data when specifying vertices. This can allow applications to reduce their memory footprint, as well as the memory bandwidth required for vertex data.

This extension extends the existing vertex array commands to accept the new data type.

Promoted to core in OpenGL 3.0.