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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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6
terminal.c
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@ -1082,7 +1082,11 @@ reload_fonts(struct terminal *term, bool resize_grid)
* an a2r10g0b10 type of surface, since we need more than 2
* bits for alpha.
*/
#if defined(HAVE_PIXMAN_RGBA_16)
options->color_glyphs.format = PIXMAN_a16b16g16r16;
#else
options->color_glyphs.format = PIXMAN_rgba_float;
#endif
}
struct fcft_font *fonts[4];
@ -1259,7 +1263,7 @@ term_init(const struct config *conf, struct fdm *fdm, struct reaper *reaper,
const enum shm_bit_depth desired_bit_depth =
conf->tweak.surface_bit_depth == SHM_BITS_AUTO
? wayl_do_linear_blending(wayl, conf) ? SHM_BITS_10 : SHM_BITS_8
? wayl_do_linear_blending(wayl, conf) ? SHM_BITS_16 : SHM_BITS_8
: conf->tweak.surface_bit_depth;
const struct color_theme *theme = NULL;