Call m_renderbackend->clearBackBuffer(); every frame to fix the rendering of cegui widgets. Fixes #919
Call m_renderbackend->clearBackBuffer(); every frame to fix the rendering of cegui widgets. Fixes #919

Niektory/fifengine,fifengine/fifengine,fifengine/fifengine,Niektory/fifengine,Niektory/fifengine,fifengine/fifengine