The theme's chrome is worked out once, not per grapheme; still post passes let the GUI rest; a perf gate

somtrmsz's contrast floors made ChromeTheme.fromTheme run its focus-tint
and separator searches (pow calls each), and Output's RowDecoration.styleAt
called it for every grapheme of every highlighted row: the 50k-line file's
render went from 0.11 ms to 13 ms. Pardes.bodyChrome now keeps the theme's
chrome, worked out again only when the theme differs; recolorSyntax asks
for it once a decorated row, and a plain row (nearly every row of a file)
never asks. ReleaseFast, medium fixture, median us, before -> after (main):
render 13150 -> 76 (111), key-down 14658 -> 79 (110), wheel 13589 -> 76
(109), open 14891 -> 2095 (2055), edit-char 16703 -> 3006 (1251; the rest of
that gap is editing and tree-sitter, not this).

Post.animating asked for frames whenever the window had focus and any pass
was ready, so a still pass kept the GUI drawing at the display's rate
(Bloom: 49% of a core idle, in a hidden test window). A pass now says
whether it moves on its own: the CRT (its hum and dither) and a Shadertoy
file whose source reads iTime, iFrame or iDate (shader_build.readsTime; the
flag rides the wire's post message); Bloom, Vignette and Grain are still.
Bloom idle: 49% -> 1.2%, as with no pass.

zig build perf-gate: the 50k-line file's gestures, each's fastest sample
within 3x of the recorded baseline's (test/perf-baseline-<platform>-
<optimize>.json, recorded from this build), run with every unit-test. On
the regressed code it fails at 180x for render.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/perf-baseline-gui-Debug.json b/test/perf-baseline-gui-Debug.json
new file mode 100644
index 00000000..fd64ebf9
--- /dev/null
+++ b/test/perf-baseline-gui-Debug.json
@@ -0,0 +1 @@
+{"harness":"67f85bf9692f1778","build":{"compiler":"0.16.0","target":"x86_64-linux.5.10...6.19-gnu.2.38","cpu":"x86_64","driver_optimize":"ReleaseFast","core_optimize":"Debug","c_optimize":"ReleaseFast","terminal_optimize":"ReleaseSafe","platform":"gui","grammars":"full","mupdf":true,"jpx":true,"tracy":false,"quic":false,"theme_animation":true,"terminal_simd":true,"prebuilt_shaders":false},"cols":120,"rows":40,"reps":10,"only":"medium","fixtures":[{"name":"small","lines":1000,"cols":60,"bytes":62694},{"name":"medium","lines":50000,"cols":60,"bytes":3201944},{"name":"large","lines":300000,"cols":60,"bytes":19464444},{"name":"longline","lines":400,"cols":8000,"bytes":3200400},{"name":"esp32p4","lines":12,"cols":240,"bytes":2892}],"cells":[{"op":"open","fixture":"medium","min_us":1768,"med_us":2025,"p90_us":2122,"max_us":2125},{"op":"render","fixture":"medium","min_us":72,"med_us":75,"p90_us":76,"max_us":83},{"op":"key-down","fixture":"medium","min_us":73,"med_us":76,"p90_us":80,"max_us":84},{"op":"key-right","fixture":"medium","min_us":74,"med_us":77,"p90_us":81,"max_us":84},{"op":"page-down","fixture":"medium","min_us":73,"med_us":74,"p90_us":77,"max_us":79},{"op":"wheel","fixture":"medium","min_us":71,"med_us":75,"p90_us":81,"max_us":81},{"op":"edit-char","fixture":"medium","min_us":2413,"med_us":2674,"p90_us":2943,"max_us":3111}]}