func VertexAttribPointer(index uint32, size int32, xtype uint32, normalized bool, stride int32, pointer unsafe.Pointer) {
	C.glowVertexAttribPointer(gpVertexAttribPointer, (C.GLuint)(index), (C.GLint)(size), (C.GLenum)(xtype), (C.GLboolean)(boolToInt(normalized)), (C.GLsizei)(stride), pointer)
}
func VertexAttribPointer(index uint32, size int32, xtype uint32, normalized bool, stride int32, pointer unsafe.Pointer) {
	C.glowVertexAttribPointer(gpVertexAttribPointer, (C.GLuint)(index), (C.GLint)(size), (C.GLenum)(xtype), (C.GLboolean)(boolToInt(normalized)), (C.GLsizei)(stride), pointer)
}
// define an array of generic vertex attribute data