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The412Banner 110cfc28f8 feat: FusionHUD replaces the session HUD, with MangoHud's readings (#1743)
The session HUD is FusionHUD (Bannerlator's HUD) with every reading taken from
the same source, and worked out the same way, as the MangoHud build that runs
Steam's performance overlay in a DroidDeck session.

- gamescope patch 0125 (gamescope-3.16.29-p19) shares the frame times that
  mangoapp reads (one per signalled commit of connector 0) in a ring named by
  DROIDDECK_HUD_FRAMES; the app reads it once per display frame and counts the
  compositor's frames when gamescope sends none.
- MangoHud's rules: FPS over periods of at least 500 ms, frame time = 1000/FPS,
  200-frame graph on a fixed 0-50 ms scale; CPU, GPU, temperatures, RAM, swap,
  VRAM and battery from MangoHud's sources. Zones 22/26/28 are typed as GPU and
  DDR sensors, so Steam's overlay CPU temperature no longer includes them.
- Five sizes in a panel shaped like the DroidDeck mark, with a centred header,
  one left edge, neon outline and FPS; Minimal is the default size. Settings on
  a new "Performance HUD" drawer page, with Bannerlator's options.
- The HUD reads sensors and polls frames only while it is drawn (not while
  hidden, in picture-in-picture or behind another app), keeps its place after
  picture-in-picture, and the diagnostics export has its own reader.

Device-tested on the AYANEO Pocket FIT: same readings as Steam's overlay side
by side in Dead Cells; the HUD updates in a game, hides in picture-in-picture
and comes back in place, no crashes.
2026-10-29 01:53:45 +00:00
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