How To Use Pen Pressure To Control Absolute Opacity In Gimp

Step by step instructions also in description. By default, when a light brush stroke passes another brush stroke, the opacity of the intersection will be twice the opacity of the individual strokes. This technique ensures that a lighter stroke will never increase the opacity of any previous heavier strokes (the same kind of behaviour that is seen when a single stroke crosses itself). Setting up dynamics 1. Create a new dynamics option 2. Assign pressure to colour in the matrix mapping 3. Adjust the mapping curve for colour to give more control Painting 1. Create a new layer 2. Fill it with the desired colour 3. Create a mask that is entirely black (transparent) 4. Change to the default colours (black foreground, white background) 5. Select the previously created dynamics option 6. Select a ground to background gradient under the brush dynamics options 7. Select "Lighten only" as the painting mode 8. Paint with light strokes to for less opacity, heavy strokes for more