[SDL] Some SDL/OpenGL Win32 ResizeEvent hack !?

[Kevin Baragona]

On Wed, 2006-06-28 at 10:52 +0200, Johannes Zimmermann wrote:
> There was a major problem for me using SDL+OpenGL on Win2k:
> 
> The std method for resizing a window (re-calling SDL_SetVideoMode()) 
> re-creates the OpenGL context flushing all textures, etc. this way...
> 
> Now I found some work-around, which seems to make the SDL_SetVideoMode() 
> call obsolete & is fine for me:
> 
> Catch the respective SDL_ResizeEvent and write new width & height into 
> SDL_GetVideoSurface()'s result (don't forget to adjust glViewport) - 
> yes, I know: this surface pointer is supposed to be read-only - but hey, 
> it works!
> 
> Is this work-around documented somewhere ?
probably not
>  Does it work for any other 
> Win32 platforms ?
i can't test win32; i modified a NeHe/SDL/Linux demo to do what you said
and it kind of works. it is cut off beyond the original width (possibly
a problem with pitch?) and it looks like the gl viewport is messed up.
But the window resizes with the same context, so I think this is a Sort
of Working(tm) here. I'm running SuSE linux 10.1 with commercial nvidia
drivers.
> 
> Cheers,
> zimerman
> 
> 
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