Re: [Libvisual-devel] Re: Comments & Suggestions

[Vitaly V. B. <vit...@uk...>]

On Tue, 15 Feb 2005 18:46:02 +0100
Dennis Smit <sy...@yo...> wrote:

> > I blit an RGB VisVideo onto a GL VisVideo?  I guess I was thinking of
> > something more abstract, where the overlay engine would offer a series
> > of fonts, and then the app could call the overlay engine "I want this
> > text to appear using font X/size Z to appear as a right-to-left
> > scrolling bar Y high on the bottom of the screen (or as a static box in
> > the center of the display, etc) using the following foreground/background
> > colors for the text and the (if specified) enclosing rectangle and border." 
I agree, it's definitely must have feature. It's just not implemented yet ;)

> you want everything in ARGB. Regarding GL, how would you like to 
> overlay it? like some glDrawPixels call, or ? (vitaly jump in here!)

> I am not really a big gl hero myself actually, is there a way to savely
> overlay over a GL frame, while a GL scene is rendered ?
Sure. If there's an image, it can be glDrawPixels()'ed. That's the way
lvdisplay handles RGB actors within glx. BTW, this image can be used as
texture for a surface.

Another way is to use GL's functions directly to draw "overlayed"
interface, but it's obviously GL-only.

-- 
Vitaly
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