Derek Foreman 5d7271683b ecore_drm: Change page flipping logic so we can't tear ... Summary: Previously if we ever tried to queue up two page flips in less than a retrace interval (which can easily happen since the evas clock isn't based on vblank) we'd give up on ever using page flips again, and tear on every screen update. This fixes that by using a vblank callback for custom ticks and using page flips whenever possible. If a page flip fails it means a page flip raced with the vblank ticker, so we need to queue up that frame when the current page flip completes. This ensures that while we might drop interim frames, we will never lose the most recent. Now it should only be possible to tear if two ticks fire during the wait for a page flip to complete. This would result in rendering taking place in the front buffer. I don't think this can happen, but an error is logged if it does. Reviewers: zmike, devilhorns Subscribers: cedric, jpeg Differential Revision: https://phab.enlightenment.org/D3594		2016-02-18 15:50:15 -05:00
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Evas_Engine_Drm.h	evas-drm: Cleanup Engine Info structure	2015-04-10 11:09:51 +02:00
evas_engine.c	evas-drm: Cleanup drm engine code	2015-04-10 11:09:51 +02:00
evas_engine.h	evas-drm: Remove useless fields from Outbuf structure	2015-06-02 09:24:22 -04:00
evas_outbuf.c	ecore_drm: Change page flipping logic so we can't tear	2016-02-18 15:50:15 -05:00