(1.5) New Corona Output parameters defaults should be corrected

[pokoy]

There are some new parameters in the Corona Output Map which will mess up older scenes.

Brightness parameter is at 1 as default, while 0 means no change to the nested map. As a consequence, older scenes will be loaded with 1 which will make the nested maps brighter.
Please set this parameter to 0 as default.

As for Contrast, this one should show 0 for no change rather than 1 and instead of going from 0-1 it should be mapped to -1 to 1. Otherwise users will think 0 means no effect since brightness has no effect at 0. Both parameters should really follow the same logic: 0 for no change, negative and positive values for changing the map's outcome.

[Ondra]

Fixed

[pokoy]

Thanks!