DirectX calls are probably (or might be) still higher level than just graphic primitives. So maybe this approach only works for DirectX based games under certai

DirectX calls are probably (or might be) still higher level than just graphic primitives. So maybe this approach only works for DirectX based games under certain circumstances. When I first read your comment, I was actually thinking about something similar as Sikuli. Sikuli might actually work for some primitive scripting events in games.