vicrodh e6c058c2f2 feat(qt): immersive shader scenes — RHI items, scene menu, GL link pairing ...

Port the immersive GPU scenes: Plasma, Tunnel, Aurora, Ambient, Spectral
Ribbon and Line Bed as QQuickRhiItems/ShaderEffects under a pulse-driven
ShaderSceneLayer, plus the Qt-only Tunnel Flow (Tauri Canvas2D port) fed
by the Viz16 stream. Scene rows live in the header view menu (no Off row);
g cycles the ring. A fresh immersive open defaults to Split > Lyrics
(owner ruling).

OpenGL link fix (owner smoke: Tunnel black with "uniform _22 declared as
type buf and type buf"): every ShaderEffect fragment with its own uniform
layout now ships a paired vertex stage declaring the identical block —
the shared spectrum.vert only ever linked under Vulkan.

RHI hardening: render pass descriptors on the ping-pong targets (the
Tunnel Flow segfault / Plasma dead window), mirrorVertically tied to the
backend (!== OpenGL), ribbon sub-uploads carry setSourceSize.

km

2026-08-16 08:22:57 -06:00

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