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config: tweak.surface-bit-depth: add 16f-bit

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This adds support for 16-bit floating point surfaces, using the new
PIXMAN_rgba_float16 image buffer type. This maps to
WL_SHM_ABGR161616F.
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Daniel Eklöf 2025-05-01 09:37:47 +02:00
parent 970e13db8d
commit 81e979b228
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9 changed files with 64 additions and 10 deletions
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doc/foot.ini.5.scd
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@ -2024,7 +2024,7 @@ any of these options.
*surface-bit-depth*
Selects which RGB bit depth to use for image buffers. One of
*auto*, *8-bit*, *10-bit* or *16-bit*.
*auto*, *8-bit*, *10-bit*, *16-bit*, or *16f-bit*.
*auto* chooses bit depth depending on other settings, and
availability.
@ -2036,13 +2036,15 @@ any of these options.
alpha channel. Thus, it provides higher precision color channels,
but a lower precision alpha channel.
*16-bit* 16 bits for each color channel, alpha included. If
available, this is the default when *gamma-correct-blending=yes*.
*16-bit* and *16f-bit* uses 16 bits (with *16f-bit* being floating
point) for each color channel, alpha included. If available, this
is the default when *gamma-correct-blending=yes* (with *16-bit*
being preferred over *16f-bit*).
Note that both *10-bit* and *16-bit* are much slower than *8-bit*;
if you want to use gamma-correct blending, and if you prefer speed
(throughput and input latency) over accurate colors, you can set
*surface-bit-depth=8-bit* explicitly.
Note that both *10-bit*, *16-bit* and *16f-bit* are much slower than
*8-bit*; if you want to use gamma-correct blending, and if you
prefer speed (throughput and input latency) over accurate colors,
you can set *surface-bit-depth=8-bit* explicitly.
Default: _auto_