The most likely reason for OpenGL having the origin located at the bottom-left of the screen instead of the top-left is most likely because the earliest Silicon Graphics workstations rasterized geometry from the bottom up, and OpenGL is a direct descendant of IRISGL.https://twitter.com/gwenckatz/status/1171079679463157765 …
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I assumed it had something to do with Y coordinate in math going up For the record, texture Y coordinate is "canonically" bottom-up, but in reality it just has to match the texture (if texture is top-down, then texture Y is top-down too)
I'm not so sure. Remember that we're talking about late 80's workstations, and CRTs scan left-right, top-bottom, and framebuffers tended to be organized in the same way for easier scan-out.