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config: tweak.surface-bit-depth: add support for 16-bit surfaces

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This adds supports for 16-bit surfaces, using the new
PIXMAN_a16b16g16r16 buffer format. This maps to
WL_SHM_FORMAT_ABGR16161616 (little-endian).

Use the new 16-bit surfaces by default, when
gamma-correct-blending=yes.
This commit is contained in:
Daniel Eklöf 2025-05-01 09:37:47 +02:00
parent 7354b94f73
commit 970e13db8d
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GPG key ID: 5BBD4992C116573F
10 changed files with 101 additions and 25 deletions
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9
config.c
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@ -2809,12 +2809,19 @@ parse_section_tweak(struct context *ctx)
else if (streq(key, "surface-bit-depth")) {
_Static_assert(sizeof(conf->tweak.surface_bit_depth) == sizeof(int),
"enum is not 32-bit");
"enum is not 32-bit");
#if defined(HAVE_PIXMAN_RGBA_16)
return value_to_enum(
ctx,
(const char *[]){"auto", "8-bit", "10-bit", "16-bit", NULL},
(int *)&conf->tweak.surface_bit_depth);
#else
return value_to_enum(
ctx,
(const char *[]){"auto", "8-bit", "10-bit", NULL},
(int *)&conf->tweak.surface_bit_depth);
#endif
}
else {