Commit b380ed1f9837aba3659a7a5aefd207033cea8cfe
2024-02-14T09:31:26
Vulkan: Add EGL_ANGLE_global_fence_sync Chrome has an implicit assumption that due to context virtualization, signaling a fence in one context results in synchronization with _all_ contexts that have previously made submissions. This is not per EGL spec, but the functionality is easily implementable in the Vulkan backend. In the Vulkan backend, each context is given its own "timeline" of submissions (tracked by serials associated with "indices"). The required functionality is implemented through a new EGL fence sync object whose sole difference is that it synchronizes with all the existing timelines rather than the one of the current context. Bug: b/318721705 Change-Id: I6c45d065e592d0d4ed627ce9695196b1086d5021 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5297396 Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>