[Pixman] About 2.5D effect

Søren Sandmann sandmann at cs.au.dk
Wed Oct 12 01:56:27 PDT 2011

唐博 <hitiger.2008 at yahoo.com.cn> writes:

> How can pixman achieve 2.5D effect, it's affine matirx is 3*3. If add
> Z axis coordinate, I found that it should apply 4*4 matrix.

You may be interested in this branch:


which contains two demo programs, one that can compute a projective
transformation that transforms one quadrilateral into another, and one
that displays a checkerboard under a projective transformation.

Note that the support for projective matrices in pixman has not been
used all that much until now, so it isn't very optimized.


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