For r5xx and higher (X1xxx and higher) the driver should default to VideoOverlay and OpenGLOverlay both off, I believe. Since the current drivers commence support with HD2xxx that means they should be off all the time.
OpenGL Overlay is for specific workstation apps which use OpenGL calls to float an overlay in front of a full screen app. VideoOverlay is for pre-5xx cards which had dedicated hardware in the overlay block for scaling and colour space conversion - starting with 5xx we did that in the shaders instead.
OpenGL Overlay is for specific workstation apps which use OpenGL calls to float an overlay in front of a full screen app. VideoOverlay is for pre-5xx cards which had dedicated hardware in the overlay block for scaling and colour space conversion - starting with 5xx we did that in the shaders instead.
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