interpret "subpixel none" as CAIRO_ANTIALIAS_GRAY #5239
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See issue swaywm#5228. Currently, WL_OUTPUT_SUBPIXEL_NONE is ignored and CAIRO_ANTIALIAS_SUBPIXEL is still set. This commit checks if subpixel is set to none and if so, calls set_antialias with CAIRO_ANTIALIAS_GRAY. This mirrors the functionality in Mako's [PR261](emersion/mako#261)
Subpixel none doesn't mean no antialias. Subpixel none means that the physical pixels don't have a geometry, ie. antialiasing shouldn't make any assumption about subpixel geometry.
I wonder if Cairo already does that by default? |
emersion
approved these changes
Apr 20, 2020
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Fixes issue #5228. Currently, WL_OUTPUT_SUBPIXEL_NONE is ignored and CAIRO_ANTIALIAS_SUBPIXEL is still set. This commit checks if subpixel is set to none and if so, calls set_antialias with CAIRO_ANTIALIAS_GRAY. This mirrors the functionality in Mako's PR261.
@progandy brought up that we could alternatively "extend it to 'none' = no antialias, 'gray' = grayscale" and/or read from the fontconfig setup.