<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [i915] Feature request: Add support for fencing for PRIME setups" href="https://bugs.freedesktop.org/show_bug.cgi?id=95472#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [i915] Feature request: Add support for fencing for PRIME setups" href="https://bugs.freedesktop.org/show_bug.cgi?id=95472">bug 95472</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>9Halfway there: commit ad778f8967ea2f0bfda02701f918bcfcd495b721 Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Date: Thu Aug 4 16:32:42 2016 +0100 drm/i915: Export our request as a dma-buf fence on the reservation object If the GEM objects being rendered with in this request have been exported via dma-buf to a third party, hook ourselves into the dma-buf reservation object so that the third party can serialise with our rendering via the dma-buf fences. Testcase: igt/prime_busy Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>> Reviewed-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>> Link: <a href="http://patchwork.freedesktop.org/patch/msgid/1470324762-2545-26-git-send-email-chris@chris-wilson.co.uk">http://patchwork.freedesktop.org/patch/msgid/1470324762-2545-26-git-send-email-chris@chris-wilson.co.uk</a> Exporting rendering from i915.ko to others (nouveau, radeon/amdgpu) should work. Import rendering from others to flip should work (reverse prime + tearfree etc). Last remaining (missing) trick is importing rendering from others into our rendering for updates (windowed swapbuffers, should affect all render offload to a dgpu iirc).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>