Re: [PyOpenGL-Users] Ingame Overlays

[Maciej K. <ma...@dg...>]

On Thu, Jun 22, 2006 at 04:43:28PM +0100, Rowan wrote:
> Just to make sure you understood my intentions and I don't go off
> chasing rainbows, I want to use this HUD ontop of any game, not one
> release by me. e.g. Battlefield 2 or World or Warcraft, or whatever.
> With that inmind does your suggestions still hold true.

Ahhh, that is a very different ball of yarn.  I don't think that's possible
with PyOpenGL.  In fact I don't think you can do it with OpenGL at all... this
seems more like a lower-level, platform/windowing system specific thing.   If
you're looking at Windows in particular, then maybe, mayyyybe, DirectX allows
an external program (i.e., your program) to "break into" the graphical context
of another (i.e., the game).  More likely is that you need to do some Windows
higher-magic through some other API (e.g., your app would read the game's
window, to see what was rendered, modify it, and then write it back into the
game window).  

To sum up: what you propose is very non-trivial to do, is very
platform-specific, and would need a fair bit of intimate knowledge of the OS
API.  

Considering your situation, I think the best bet for you is to Google
around and try to find a project that has attempted to do something similar.
This will be Windows-specific stuff, and will likely have very little to do
with OpenGL or DirectX (but it may involve one of the other Direct* thingies
under Windows; I know very little about them).

-- 
Maciej Kalisiak       mac "at" dgp.toronto.edu       www.dgp.toronto.edu/~mac