wine hangs in ddraw/d3dtexture.c (d3dtexture_create)

[Michael Schlüter]

> > I'm now sure that the call to glGenTextures didn't return. I can think
> > of three reasons:
> > 
> > 1. Another wine thread is just doing a call to libGL
> > 2. The libGL of Nvidia has a bug
> > 3. both of the above
>
> If you run with +ddraw,+tid and you get two different numbers before the
> lines, you are hit by a bug that will be a bitch to fix : multithreaded
> Direct3D applications...

yes, that's the case. glGenTextures seems to be the first gl call of the
new thread.

> This is something I have no real clue yet how to fix in the 'general' case
> (I have some ideas for two of the games I have that exhibit the issue).

I did a "bad hack" and replaced glGenTextures with own code (only a
static variable that gets increased after each call). That works fine
for me.

After google-ing a bit I think it is necessary to make a
glXmakeCurrent() call before using a gl-call in a new thread (at least
for the Nvidia GL-driver, DRI should work). Not all GL-calls are
affected but definitely the textures calls.

Bye, Michael