kc3-lang/angle

2022-11-10T12:49:03

Support timestamp behind flag enableTimestampQueries All timestamp queries happen in the same disjoint query in one Context11. The whole design is that we start a disjoint query in D3D11 at the first timestamp request and keep it continuously running in current context. Only end it and read it back when the user queries if there is a disjoint. We cache the frequency and assume it doesn't change. For the first timestamp, we create a temporary D3D disjoint query and end it so we have a frequency to convert the ticks to nanoseconds. This task is taken over from https://chromium-review.googlesource.com/c/angle/angle/+/3694732 Bug: angleproject:7367 Change-Id: I747c9b00e10ac58362df66332efd01a24aa395f2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4021139 Commit-Queue: Jiajia Qin <jiajia.qin@intel.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>