HUD Guns

[graphitemaster]

After experimenting with various ways of representing HUD guns, the easiest way is to use the following pipeline setup

        p.setRotation(m::quat());
        p.setRotate({0, -99.0f, 0});
        p.setPosition({0, 0, 0});
        p.setWorldPosition({0.4f, -0.4f, 0.4f});

This seems to be sufficient for most, if not all HUD weapons.

We need to figure out how to render them without them causing SSAO to break.

[graphitemaster]

We're using stencil to fix the SSAO issues. This is closed as it's been determined how this is to be done and the method of which we're doing it currently works.