Integrating OpenGL with Qt Quick 2 applications

on YouTube ↗55m

" summary

Shows three concrete integration paths for Qt 5.4/5.5: hook render-thread signals like QQuickWindow::beforeSynchronizing / beforeRendering / afterRendering to draw underlays/overlays (use direct connections, copy camera state during synchronization, call setPersistentOpenGLContext and resetOpenGLState), implement an in-scene item by subclassing QQuickFramebufferObject::Renderer (synchronize then render on the render thread), or take full control with QQuickRenderControl to reuse an existing GL context and schedule sync/render yourself. Performance target remains 60 FPS.

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" chapters (7)

1. 0:00Introduction to OpenGL Qt Quick
2. 1:06How Qt Quick rendering works
3. 10:18Signals for rendering control
4. 18:46Creating underlays and overlays
5. 23:21Custom OpenGL items in Qt Quick
6. 32:55Taking full rendering control
7. 47:19Q&A session

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