code: func Uniform3f(location int32, v0 float32, v1 float32, v2 float32) {
  	syscall.Syscall6(gpUniform3f, 4, uintptr(location), uintptr(math.Float32bits(v0)), uintptr(math.Float32bits(v1)), uintptr(math.Float32bits(v2)), 0, 0)
  }
docs: // Specify the value of a uniform variable for the current program object