Commit 1393bf9e0c98be3474d7270fcaa5c514c0ce2609
2020-02-28T22:03:27
Vulkan: Timestamp internal RenderPasses in perf tests. This change book-ends RenderPasses in the Vulkan back-end with timestamp queries. This allows us to write out a trace of GPU/CPU that we can inspect in Chrome. To enable the GPU trace you can define ANGLE_ENABLE_VULKAN_GPU_TRACE_EVENTS in ContextVk.cpp and run the angle_perftests suite with --enable-trace. Note that we ran into some issues with the implementation not returning monotonic timestamps. This may be a driver bug but bears more investigation. Bug: angleproject:4433 Change-Id: I0e6a364367f15183068e55686549cb418aa94c2a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2081380 Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>