in ProjectSettings\GraphicsSettings.asset there is field m_ShaderSettings: useScreenSpaceShadows: 1. I don’t know how this field can be edited in editor, but with value 0 shadows in our game seems broken. The problem is something changes this value to 0 in Editor during playing game and this is really annoying. Can anybody answer how this value should be managed?
actually, in 5.3, it toggles _ShadowMapTexture from being in screen space vs. light space.
According to http://forum.unity3d.com/threads/how-to-disable-screen-space-shadows.373100/ , this setting does nothing in Unity < 5.4