Provider Object Support For RandR 1.5
The latest work by David Airlie for improving the X.Org infrastructure to handle modern GPU features (e.g. multi-GPUs, Optimus-like capabilities, etc) comes in the form of a proposed RandR protocol update.
Aside from David's DDX driver API re-work and other API/ABI breakage to the xorg-server, David's updating the Resize and Rotate extension to the X.Org Server. He's ultimately hoping to have DRI2 offload slaves and output slaves by this September with X.Org Server 1.13.
His proposed RandR update is to add the concept of "provider objects" to this popular X extension. As said by his mailing list message, "A provider object represents a GPU or virtual device that provides rendering or output services to the X server. This is the first rev of a protocol to enumerate providers devices, set their roles, and provide generic properties based on output properties for them."
This provider object work would form RandR 1.5. Here's some additional details about why you might be interested in provider objects with RandR 1.5:
1.5 Introduction to version 1.5 of the extensionAt this time there's no other planned features to RandR 1.5.
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