Area light example, area quads don't use depth buffer

[haxiomic]

Love the demo btw :)

Just spotted lights don't occlude each other correctly (yellow is the closest in this screenshot)

[mosra]

Hi, thanks! Should be fixed in cbbaa48, the web version is now updated as well (and it turns out to be ~100 kB smaller than before, not sure if due to optimizations in Emscripten or in Magnum itself).

[haxiomic]

Nice one :)