This is some great research!
By any chance, would you have insights into how to block-wait for OpenGL (1, it's for current PDL::Graphics::TriD) events? Currently it constantly polls since it's using GLUT's glutMainLoopEvent. My googling didn't reveal a better way that was somewhat compatible with that. Yes, it should get moved off OpenGL 1, but there are other priorities first such as the imminent OpenCV interface, and loop-fusion.
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