[SDL] Equivalent of SDL_BlitSurface in OpenGL?
stephena at roadrunner.nf.net
Mon Nov 3 07:10:01 PST 2003
I was planning to have 2 textures in my application; one for the main
display and one for the font data. But I found that since the texture
itself is big enough to hold both (because of power or 2 requirements),
then I can use the one main texture.
My question is, what is the equivalent OpenGL command (when working with
textures) for the following SDL code?
SDL_Rect srcrect, dstrect;
// rects are filled with correct coordinates
SDL_BlitSurface(texture_surface, &srcrect, texture_surface, &dstrect);
I assume that it will use glCopyTexSubImage2D(). Also, when I overlay the
font subtexture, I'd like to to take into account the alpha-levels
defined in the font subtexture.
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