Fixes a bug with the visualizer where there would be empty rows shown,
e.g. threads without any profiling regions. This was especially
noticable when going from a high thread count sample (MultiThread) to a
low thread count sample, where most of the visualizer would be empty
lines. This adds a data culling step to remove the threads without any
remaining execution data + an early out so that all threads shown
onscreen must have some regions recorded.
Signed-off-by: Jacob Hilliard <jhlliar@amazon.com>
Jacob Hilliard
016cfef6ca