Split - Material Editor - Improved Brightness Control Merged

Currently, the way it works is you can really only darken, and if you invert the image you can only brighten. In theory, this seems like it's doing all the right things. However, this is only valued with a bitmap that is in the 50% grey tones. If a map is beyond or below 50% grey the spectrum of values is clamped. The bitmap is probably 80% black and you need to pull it down to 60%. This is not possible without the use of a 3rd party application. Currently, you only have the ability to lower the brightness, increasing the black values. If the bitmap is inverted making it from 80% black now to 20% white there's no way to darken the values as decreasing the brightness makes the bitmap brighter. Two proposals. 1. Increase the spectrum value for the brightness control. Allow users to increase brightness by having the slider in a midpoint with a value of 0. Move the slider in a negative direction darkens, positive direction brightness. Still allow for the invert but don't invert the control. 2. Flip-flop the brightness control for inverted images. Not necessarily referring to the use of curves. The thought is to expand on the functionality within Enscape and minimize the need for 3rd party plugins. See concept mock-up. It's very straightforward and currently, the functionality doesn't exist but the framework is there and needs to be expanded.