On Tuesday, 21 July 2015 at 14:51:47 UTC, John Colvin wrote: > Isn't glu considered legacy these days? I think it's entirely > OpenGL 2.x. For the maths stuff see > http://code.dlang.org/packages/gl3n Yep. It still uses immediate mode, GL matrix functions, and all sorts of other stuff removed in OpenGL 3.1+ core.