A while back I had to compile my own version of DOSBox because the official version doesn't call glClear() when swapping buffers. The issue tracker had a multi-

A while back I had to compile my own version of DOSBox because the official version doesn't call glClear() when swapping buffers. The issue tracker had a multi-year-old bug report about it, but the developers insisted that the driver was bad despite the OpenGL specifications stating quite clearly that one cannot assume a buffer hasn't been modified when using SwapBuffers and must clear it. So it really comes as no surprise to me that there are actually many DOSBox forks.