I'm new to programming graphics on the Raspberry pi. I've been trying to deconstruct the
samples provided in /opt/vc/src/hello_pi/ directory, I'm using a Rasp Pi 3 model B and I was
wondering why when I run some of the samples that after using them (triangle2 for instance)
they will lose functionality (e.g. no longer respond to mouse input) or freeze altogether.
Is there some state stored that's not loading properly on subsequent runs?
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