From markenji - fix depth value calculation for ray picking - https://github.com/Markenij/scenejs/commit/03010fcd59edf09b019da8336c91c116f923f202
From markenji - fix depth value calculation for ray picking - https://github.com/Markenij/scenejs/commit/03010fcd59edf09b019da8336c91c116f923f202

dayo7116/scenejs,tsherif/scenejs,dayo7116/scenejs,tsherif/scenejs