Multi threading off then on
26I'm using Win32 SYNCHRONIZATION_BARRIER objects that block a thread's execution until I need it. So I can spawn some worker threads to divide up the work of finding the first collision time. This gives a substantial performance boost over trying to find the first collision time in a single thread. The worker threads wait at the SYNCHRONIZATION_BARRIER until the main thread is ready for them.
In the video, the first run is a single thread. the update time approaches 80ms. Then I switch to 12 threads and the update time is around 20 ms. Not bad considering there are 360 balls doing a bad n^2 algorithm. I want to eventually do spatial partitioning, like BVH.
I'm also looking for more places I can implement multi threading instead of it only being used to find collision results.
The code is only updating one ball at a time to have perfect accuracy, thats why it gets so slow with only a relatively low amount of balls.
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