Re: [AD] clipping line algorithm

[Bertrand Coconnier <bcoconni@xxxxxxxxxx>]

Le samedi, 4 oct 2003, à 08:00 Europe/Paris, Matthew Smith a écrit :

> > line() is currently not accelerated on any port, except if it is 
> > actually
> > hline() or vline().
> I've used it on the PSX port :o) Will it break anything?
>
> The GTE chip on the PSX is so much faster than the main CPU that I've 
> used
> it for hline and vline too.
>
> What did strike me as 'missing' from the vtable were gouraud_hline and
> [a|p]tex_hline
IMO, we should add the polygon3d() method to the vtable instead of its 
scanline methods counterpart. Most of the 3D accelerated API I know of 
(OpenGL, DirectX, Glide, ...) never refer to scanlines. They can draw a 
whole lit/tex/gouraud polygon with (almost) one call to their API.  
Using a scanline scheme with those APIs would just be a waste of the 
powerhorse of the gfx card as well as a waste of CPU cycles.

Just my opinion however :)

	Bertrand.