QGCRhiCapture Namespace Reference

Functions
QRhi *	qrhi ()
QRhi *	cachedRhi () noexcept
void	connectWindow (QQuickWindow *window)

Detailed Description

Resolves the live QRhi* driving QGC's main scene graph so platform-specific GPU-handoff code (D3D11 device sharing, Metal device matching) can target the same device QRhi is rendering on.

Qt does not expose a global RHI accessor — QQuickWindow::rhi() is the only public API and requires a window with an initialized scene graph. This helper walks QGCApplication::mainRootWindow() lazily on each call.

Function Documentation

cachedRhi()

QRhi * QGCRhiCapture::cachedRhi ( )

noexcept

Thread-safe snapshot populated from sceneGraphInitialized and cleared on sceneGraphInvalidated. Safe to read from any thread via acquire ordering.

Definition at line 34 of file QGCRhiCapture.cc.

connectWindow()

void QGCRhiCapture::connectWindow

(

QQuickWindow *

window

)

Call once from the GUI thread after the main QQuickWindow is available. Connects sceneGraphInitialized / sceneGraphInvalidated to maintain cachedRhi().

Definition at line 39 of file QGCRhiCapture.cc.

Referenced by VideoManager::init().

qrhi()

QRhi * QGCRhiCapture::qrhi

(

)

Returns the QRhi for QGC's main QQuickWindow once its scene graph is up. Safe to call from the GUI thread or the render thread (QQuickWindow::rhi() is documented safe on both). Returns nullptr if the window doesn't exist yet, isn't initialized, or QGC is running headless.

Definition at line 25 of file QGCRhiCapture.cc.

References QGCApplication::mainRootWindow(), and qgcApp.