Commit 9601a548854dc776da6e7bd94d9b39ff03afc322
2019-11-23T23:44:52
Vulkan: implement external semaphore barriers glWaitSemaphoreEXT and glSignalSemaphoreEXT functions optionally request buffer and image barriers to be performed by the implementation. If any barriers are present, a single global memory barrier is inserted to take care of memory accesses. In both functions, buffer and image memory barriers are used to perform queue ownership transfers to ANGLE's queue (glWaitSemaphoreEXT) or the EXTERNAL queue (glSignalSemaphoreEXT). In glWaitSemaphoreEXT, the given layouts are information regarding how the external entity (the caller) has modified the images' layouts, and is used to update ANGLE's internal state tracking. Bug: angleproject:3289 Bug: 1026673 Change-Id: Ic478a8813df727c89413c8ae2adf42b5c1d06069 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1933016 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Michael Spang <spang@chromium.org>