Is QML compatible with C++ OpenGL can I manipulate it with C++ for off screen rendering
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This is interesting but before I start learning it I would like to know if it is something that would make my project easier to build which requires off screen rendering and physics
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In Qt 5, QML is implemented using OpenGL. Can't get more "compatible" than that ;-) Check out QQuickItem documentation for more info.
In Qt 6 it is different, because implementation is independent of the 3D API (it uses OpenGL, DirectX, Metal etc. depending on platform).
For offscreen rendering, run your app with
offscreenplatform plugin:yourApp.exe -platform=offscreen
