DEV.md: lane O switches

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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simplysanatoriandClaude Fable 5.1 committed 2026-10-14 12:49:01 -04:00
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@@ -133,3 +133,11 @@ pose with the median eye-to-head offset and field of view of the first 120 focus
per-refresh eye motion from the runtime cannot reach the images. KARTFRAME_AHEAD_REFRESHES=1|2
(default 2): locate sets one refresh ahead (sets then do not fit a refresh in races: about half late).
Session plan: frame/perf/session-h9/README.md.
## Lane O switches (the hand-over GalaxyFrame's way)
KARTFRAME_XR_FORMAT=rgba|bgra (default rgba: eye swapchains VkFormat 43, the sRGB draw swizzles),
KARTFRAME_XR_USAGE=galaxy|kart (default galaxy: COLOR_ATTACHMENT | SAMPLED), KARTFRAME_END_LOCATE=1|0
(default 1: one more locate for the frame's own time before ending it, race frames), and
KARTFRAME_XR_EXTENSIONS=galaxy (GalaxyFrame's extension list: drops hand steering, other headsets'
profiles and the clock conversion; default stays KartFrame's). Mock: MOCK_XR_TRACE_DETAIL=1.
Comparison and remaining candidates in frame/perf/H9.md.