F5 and no depth
For some tools, turning off the light with F5 shows a notable difference in responsiveness. Especially the airbrush.
This led me to suggest an idea for an option to turn off the depth while painting. For example press F5 to turn off the lighting effects and then paint with the oil brush or paint tube. Some of the resulting stokes are really nice and it would be great to keep them that way when turning the light back on.
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