Qt Canvas 3D Logging

Qt Canvas 3D makes use of Qt's categorized logging. The following categories are supported:

qt.canvas3d.info.debugLogs on high level information about the OpenGL driver.
qt.canvas3d.rendering.debugLogs all the method calls in Qt Canvas 3D.
qt.canvas3d.rendering.warningLogs all warnings on from Qt Canvas 3D internal verifications that happen before a OpenGL method call is made to the actual graphics driver.
qt.canvas3d.glerrors.debugLogs all the OpenGL driver level errors. This entails calling glGetError() after each OpenGL driver call and this will cause a negative performance hit. Please use only when necessary to find root causes of rendering errors.

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