image: Add a convenience function for creating an image from another's data

The GL backend would like to extract a rectangle from another surface
and convert it to a different pixel format. The
_cairo_image_surface_create_from_image() does that by returning a new
image that has the contents of the specified rectangle in the source

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

0 files changed, 0 insertions, 0 deletions