[Pixman] About 2.5D effect

唐博 hitiger.2008 at yahoo.com.cn
Tue Oct 11 19:22:45 PDT 2011

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.
Who can tell me , thanks very much.
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