The previous overlay technique may show more accurate colors than the current gamma technique.
The downside is that it is not working when opening Mission Control or while Spaces are switched.
Using the overlay should now be an advanced / experimental option which can be toggled in the advanced settings tab.
To do:
when the option is active, create an Overlay(Window) with the screen size instead of a 1x1 pixel
set the metal clear color to an all white pixel using the brightness value from the settings not to the maximum EDR value
set the metal layer compositing filter to 'multiply' when the option is active
The previous overlay technique may show more accurate colors than the current gamma technique. The downside is that it is not working when opening Mission Control or while Spaces are switched.
Using the overlay should now be an advanced / experimental option which can be toggled in the advanced settings tab.
To do:
Many of these changes are related to #48.