On Mon, 25 Apr 2011 15:12:20 -0700, Jesse Barnes jbarnes@virtuousgeek.org wrote:
Overlays are a bit like half-CRTCs. They have a location and fb, but don't drive outputs directly. Add support for handling them to the core KMS code.
Are overlays/underlays not associated with a specific CRTC? To my mind, overlays are another scanout buffer associated with a specific CRTC, so you'd create a scanout buffer and attach that to a specific scanout slot in a crtc, with the 'default' slot being the usual graphics plane.