Lukas Tönne
e390e9e571
The sunbeams node was clamping the range of influence to start at 1 pixel distance from the source. This was a poor fix for artifacts caused by an off set in buffer coordinates. Since the u coordinate starts at ceil(umax) the v coordinate also has to use ceil. This also fixes some discontinuities that became visible when the source point is close to a sharp line in the input image.