+ bpy.types.Material.shader = bpy.props.StringProperty(name="Custom shader", description="Name of a custom shader to use for rendering")
+ bpy.types.Material.shadow_shader = bpy.props.StringProperty(name="Custom shadow shader", description="Name of a custom shader to use for shadow pass")
+ bpy.types.Material.receive_shadows = bpy.props.BoolProperty(name="Receive shadows", description="Receive shadows from a shadow map", default=True)
+ bpy.types.Material.image_based_lighting = bpy.props.BoolProperty(name="Image based lighting", description="Use an environment map for ambient lighting", default=False)