code: func VertexArrayVertexBuffer(vaobj uint32, bindingindex uint32, buffer uint32, offset int, stride int32) {
  	syscall.Syscall6(gpVertexArrayVertexBuffer, 5, uintptr(vaobj), uintptr(bindingindex), uintptr(buffer), uintptr(offset), uintptr(stride), 0)
  }
docs: // bind a buffer to a vertex buffer bind point