From: Søren Sandmann Pedersen
Previously, this function would do coordinate calculations in such a
way that (x_dst, y_dst) would only affect the alignment of the source
image, but not of the traps, which would always be considered to be in
absolute destination coordinates. This is unlike the
pixm
I forgot to CC pixman@lists.freedesktop.org on the following
patch. The patch is necessary to make trapezoid rendering directly to
X windows work and also makes the pixman_composite_trapezoids() API
more similar to pixman_image_composite(). See this thread:
http://lists.x.org/archives/xorg-dev
