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magnum-boostrap-qtquick/README.md

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2020-06-23 16:39:30 -06:00
# Magnum + Qt Quick bootstrap
This app demonstrates usage if Magnum rendering engine within a Qt Quick application.
## Common pitfalls
### Header inclusion order
Follow a simple rules: Always include Magnum's headers first. If you're including
your own headers, make sure that this rules is preserved. It's very easy to violate it.
Common symptom is compiler errors about missing declarations for `glFinish`, `glFlush`
and `glGetError`, which some Qt headers (`QOpenGLFunctions`) are unbdefining.
For a bomb-proof solution, make a header file that includes all of your Magnum and Qt
dependencies in correct order.
### CMake AUTOMOC
CMake detects a Qt project and enables `moc` preprocessor automatically for certain
source files. This may not play well with Magnum's headers. If you see `moc` related
build errors in Magnum's headers, improve separation between Magnum and Qt code, ie.
move Magnum code to its own source files.