RE: [Algorithms] Perspective Projection and Clipping in Homogeneous Coordinates.

[Stefan B. <ste...@te...>]

> A certain Japanese console has a unusual need for its clipping matrix, it
> needs -|w| < z < +|w| rather then the usual 0 < z < w.
> This means that that any text book clipping matrix, needs modifing for
> S***'s chips.

  Well, actually... 'unusual' in this case means "different from D3D" I
suppose? OpenGL has exactly the same convention and if you think about it it
makes more sense to have the same clip criteria for z as for the other
coordinates. IMHO, of course.

Cheers,
Stef
--
Stefan Boberg, R&D Manager, Team17 Software Ltd.
bo...@te...