[cairo] Cairo + Pango
keithp at keithp.com
Sat Aug 7 19:49:51 PDT 2004
Around 15 o'clock on Aug 7, Bill Spitzak wrote:
> LCD screens should be treated by Cairo exactly like they have 3x resolution
> in one direction. All transforms, etc, should be done as though this is the
> final output device. The final stage of compositing selects from the r,g,b of
> source and destination images according to x%3. The other trick is that thin
> lines are made 3 pixels wide horizontally, and the font renderer also likes
> to make things 3 pixels thick.
It's harder than that; you have to filter the output to balance color
fringing and resolution. We've demonstrated that you can effectively
sub-pixel position glyphs, but you have to respect the pixel grid when
computing stem widths, and you have to filter the output a bit.
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