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I just use freeglut to open a window and throw opengl into it, in a more or less portable way. The "gui" and "font" parts of freeglut are not really very usefu

I just use freeglut to open a window and throw opengl into it, in a more or less portable way. The "gui" and "font" parts of freeglut are not really very useful (and they are missing in glfw anyway). Thus, unicode and high-dpi issues should be of no concern: as long as you can draw to your window and receive user input, what else do you need? What do you mean exactly by high-dpi "support"?

eropple 8y ago
You have to explicitly opt into a Retina display context on MacOS in order to get a window into which you can render at high DPI (2x the physical dimensions). You cannot mimic this with transform matrices; the render target will be rasterized at low-DPI and interpolated. So, yes, high-DPI issues very much exist, and GLFW does the right thing.