Perf: time-slice reflection probe capture (~3.5 ms/frame) #124

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opened 2026-09-27 18:33:25 +00:00 by backspace119 · 0 comments

backspace119 commented

2026-09-27 18:33:25 +00:00

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GTX 1080 Ti @ 1918×1008, RenderVKGpuTimers (see #98): probe is 3.4–4.2 ms every frame. At ProbeDetail=2 a full 6-face probe is re-captured every frame. It's the biggest fixed GPU cost on the RTX 5090 as well (1.7 ms of ~7).

Capture one face per frame, round-robin (LL's approach), or spread probes over N frames.
Re-capture sooner only when the probe's contents or the sun change.
Longer term: a single-pass layered 6-face render (see the phase P notes).

Part of #98.

GTX 1080 Ti @ 1918×1008, `RenderVKGpuTimers` (see #98): `probe` is 3.4–4.2 ms every frame. At `ProbeDetail=2` a full 6-face probe is re-captured every frame. It's the biggest fixed GPU cost on the RTX 5090 as well (1.7 ms of ~7). - Capture one face per frame, round-robin (LL's approach), or spread probes over N frames. - Re-capture sooner only when the probe's contents or the sun change. - Longer term: a single-pass layered 6-face render (see the phase P notes). Part of #98.