This many points is surely out of scope!

This is about an update to Blender video editing Scopes (waveform, vectorscope, etc.), and a detour into rendering many points on a GPU.
Making scopes more ready for HDR Current Blender Studio production, Singularity, needed improvements to video editing visualizations, particularly in the HDR area. Visualizations that Blender can do are: histogram, waveform, RGB parade, vectorscope, and “show overexposed” (“zebra stripes”) overlay. Some of them were not handling HDR content in a useful way, e.