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This is so that the GPU will wait for all previous commands to finish (hit bottom of pipe) before taking the enter timestamp and then whatever was recorded within the scope to finish (hit bottom of pipe) before taking the leave timestamp. TOP_OF_PIPE (particularly at the scope exit) was just recording the time of when the recorded work within the VkCtxScope was starting (hit top of the pipe) and not waiting for it to complete.
Tracy Profiler
A real time, nanosecond resolution, remote telemetry frame profiler for games and other applications.
Tracy supports profiling CPU (C, C++11, Lua), GPU (OpenGL, Vulkan), memory, locks, context switches, per-frame screenshots and more.
For usage and build process instructions, consult the user manual at the following address.
Introduction to Tracy Profiler v0.2
New features in Tracy Profiler v0.3
New features in Tracy Profiler v0.4
New features in Tracy Profiler v0.5
New features in Tracy Profiler v0.6
Description
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