melonDS: Mario Kart DS in hi-res glory

Some gameplay of a great classic, but with betterer graphics. With OpenGL, we render the 3D scene at 4x the native resolution. Even without fancypants filtering, that ain't too shabby.

Noting that video recording took its toll on overall performance. I normally get a steady 60FPS, even at this resolution.

There are also still some issues here and there, for example with fog and translucent objects (as seen in Rainbow Road). I had to tweak shito to get around a limitation in Intel's OpenGL driver, but that broke fog.