vicrodh
e6c058c2f2
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
42 lines
1.6 KiB
C++
42 lines
1.6 KiB
C++
// Spectral Ribbon (immersive shader scene, mode 4) — the QQuickRhiItem
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// behind the GPU spectrogram. Block A3 of the 2026-08-15
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// immersive-completion contract (spec 01 §2.4). Third hand-written C++
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// item after LineBedItem/PlasmaItem (cxx/linebed_item.h carries the
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// why-C++ rationale; this scene additionally needs a PERSISTENT texture
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// written in sub-rects, which a ShaderEffect cannot express).
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//
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// QML properties are MEMBER-only (no NOTIFY): the QML wrapper
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// (RibbonScene.qml) writes them on the pulse edge and calls update()
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// itself — the same cadence contract as LineBedItem/PlasmaItem.
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//
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// `frame` is ONE QByteArray per viz tick, self-describing:
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// bytes 0..4 column (u32 LE) — playback-time column, 0..2047
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// byte 4 reset flag (0/1) — full spectrogram clear (track
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// change / seek), applied BEFORE the row write
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// bytes 5..517 the 512-band row (u8 per band, dB-scaled host-side)
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// (the pack's batching pattern: ONE property = ONE notify per tick).
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//
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// Registered as QML type `RibbonItem` in `com.blitzfc.qbz` 1.0 (see the
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// .cpp).
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#pragma once
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#include <QtCore/QByteArray>
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#include <QtGui/QVector4D>
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#include <QtQuick/QQuickRhiItem>
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class RibbonItem : public QQuickRhiItem
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{
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Q_OBJECT
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Q_PROPERTY(QByteArray frame MEMBER m_frame)
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Q_PROPERTY(QVector4D energyHi MEMBER m_energyHi)
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public:
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explicit RibbonItem(QQuickItem *parent = nullptr) : QQuickRhiItem(parent) {}
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QQuickRhiItemRenderer *createRenderer() override;
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QByteArray m_frame;
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QVector4D m_energyHi{ 0.0f, 0.0f, 0.0f, 0.0f };
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};
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