modesetting: use GBM_BO_USE_FRONT_RENDERING
GBM_BO_USE_FRONT_RENDERING is useful for some drivers (e.g.: radeonsi) because it allows to disable feature not compatible with front buffer rendering.
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GBM_BO_USE_FRONT_RENDERING is useful for some drivers (e.g.: radeonsi) because it allows to disable feature not compatible with front buffer rendering.