[SDL] SDL_thread and OpenGL on OS X

[Steaphan Greene]

On Sat, Apr 28, 2007 at 02:17:44PM +0200, Daniel Bünzli wrote:
> 
> Le 28 avr. 07 à 13:48, Steaphan Greene a écrit :
> 
> > I am quite sure that it IS a requirement in SDL-1.2 that only one 
> > thread ever access the video system.
> 
> Note we are talking about two different things here. When you use 
> OpenGL you are not using SDL's video system anymore.
> 
> Now it still may be that some platforms disallow two threads to enter 
> OpenGL even if they don't do it concurrently. I know at least that 
> it's not the case on osx. But I'am interested in knowing for the other 
> platforms. Can anybody provide more information ?

No, I was referring to the use of OpenGL.  Only the thread which 
initializes SDL can make OpenGL calls.  I ran into this on an project a 
few years ago where I disobeyed this.  If I remember right, it ran fine 
in Linux, but crashed on Windows - until I adjusted the code to only use 
the main thread for opengl access.

-- 
Steaphan Greene <sgreene at cs.binghamton.edu>
Lecturer, Computer Science, Binghamton University
GPG public key: http://www.cs.binghamton.edu/~sgreene/gpg.key.txt
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