[cairo] Translate the content of a painted surface

[Benjamin Otte]

On Thu, 2010-06-10 at 15:31 +0200, Mike Massonnet wrote:
> As the old surface
> is reused on a new one shifted to the left, it is getting more and
> more blurred as it is paint.
> 
I suppose you are not translating the surface to the left by an integer
amount which causes Cairo to apply a bilinear filter, which when applied
multiple times causes a blur.

Benjamin