> > 2. Overlay is implemented using textured quads.
>
> Why have you choosen quads instead of rasters ?
I used texture quads on a project I was working on some time ago, although it
was not as feature rich as the one David is talking about.
But why use rasters? I havent worked with them before, so I dont know.
One thing I could do with texture quads in a shape3d, was use a Switch group
for interface components. Also, for example, if I have a bar (progress bar,
energy bar, etc), I can simply scale it, and not to forget you can also
rotate other things. This also includes that if someone wants to play at
higher resolution, I dont have to make graphics for every resolution, I can
simply scale them up with bilinear filtering. Plus I know that a textured
quad is drawn through hardware acceleration.
Like I said I dont know about rasters so I can not say how it compares.
Leyland Needham
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