[SDL] Re: gl blitting and alpha blending

[Andreas Schiffler]

Michael Vance wrote:

> On Tue, Dec 19, 2000 at 05:51:11PM -0800, Andreas Schiffler wrote:
>
> > SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, rgb_size[3] );
>
> Alpha frame buffer is very very different from using alpha
> blending. Read your Red Book for more info.
>

I realize that ... the point is though, I can't seem to get an
alpha-channel through the

...
video_flags = SDL_OPENGLBLIT;
SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, rgb_size[3] );
SDL_SetVideoMode( w, h, bpp, video_flags )
...

call sequence (regardless if I need it for alpha blending/blitting or
not).

>
> And please don't post mixed text/html email.
>

Sorry about that ... its a netcape default. (and a habit of mine).

Cheers
Andreas

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