[cairo] Re: Using ADD operator to prevent seams

[Solerman Kaplon]

Owen Taylor escreveu:

> Here's a fully automatic, though perhaps computationally infeasible
> algorithm. :-)
>
> The basic idea is to split the image into non-overlapping components,
> draw each individually and then ADD them together.

Much like BSP algoritms for 3D that are used for solving overlapping 
geometry with alpha and occlusion culling. For 3D, very expensive 
computation with plenty of corner cases, undoable in realtime. Expect 
some overhead for 2D, but need some benchmarking to see how much, since 
you don't have perspective, maybe not much.

Solerman