Andy Ritger wrote:
The other concern (how to make sure direct rendering has completed by the time the drawable is used as a source in a composite operation) conceptually would be solved as you describe, but I expect the implementation would be buried deeper
I guess I don't see what the problem is. The graphics device processes commands as a FIFO. Groups of direct rendering commands are surrounded by a lock. If the compositor uses the same lock, synchronization and proper ordering are guaranteed.
Determining if direct rendering has damaged a region is another kettle of fish, though...
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