On 12/16/2011 07:59 AM, Tiago Vignatti wrote:
From: Tiago Vignatti<tiago.vigna...@intel.com>
I set nearest-neighbor filtering on cairo which gives a better effect when resizing. Images now are scaled-up correctly without ugly black background.
Any chance you could report this to Cairo in some more forceful way? I don't know if the people working on Wayland might have some more sway but this is getting increasingly frustrating.
Basically Cairo's EXTEND_NONE does not do what anybody wants, which is further annoying because it is the default. You can get what you want while preserving the antialiasing by setting EXTEND_PAD and first setting the Cairo mask to a parallelogram which is the transformed bounds of the source image.
It would be nice however if the Cairo developers woke up and realized that this behavior is what everybody wants and changed EXTEND_NONE to do this automatically. They are refusing because this is not what XRender does and because they are extremely paranoid about back-compatibility (despite the fact that this only makes a difference if the scale is more than one, and Cairo currently has crap filtering for that so no real programs are using it).
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