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doc: foot.ini: gamma-correct-blending: mention colors being off

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Daniel Eklöf 2025-04-19 09:16:28 +02:00
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@ -220,11 +220,12 @@ empty string to be set, but it must be quoted: *KEY=""*)
than intended when rendered with gamma-correct blending, since the than intended when rendered with gamma-correct blending, since the
font designer set the font weight based on incorrect rendering. font designer set the font weight based on incorrect rendering.
You may also want to enable 10-bit image buffers when Note that some colors (especially dark ones) will look a bit
gamma-correct blending is enabled. Though probably only if you do off. The reason for this is loss of color precision, due to foot
not use a transparent background (with 10-bit buffers, you only using 8-bit surfaces (i.e. each color channel is 8 bits). The
get 2 bits alpha). See *tweak.surface-bit-depth*. amount of errors can be reduced by using 10-bit surfaces; see
*tweak.surface-bit-depth*.
Default: enabled when compositor support is available Default: enabled when compositor support is available
*box-drawings-uses-font-glyphs* *box-drawings-uses-font-glyphs*
@ -1978,13 +1979,13 @@ any of these options.
best option. best option.
When *gamma-correct-blending* is enabled, you may want to enable When *gamma-correct-blending* is enabled, you may want to enable
10-bit surfaces, as that improves the color resolution. Be aware 10-bit surfaces, as that improves color precision. Be aware
however, that in this mode, the alpha channel is only 2 bits however, that in this mode, the alpha channel is only 2 bits
instead of 8 bits. Thus, if you are using a transparent instead of 8 bits. Thus, if you are using a transparent
background, you may want to use the default, *8-bit*, even if you background, you may want to use the default, *8-bit*, even if you
have gamma-correct blending enabled. have gamma-correct blending enabled.
You should also note that 10-bit surface is slower. This will You should also note that 10-bit surface is much slower. This will
increase input latency and decrease rendering throughput. increase input latency and decrease rendering throughput.
Default: _8-bit_ Default: _8-bit_