**System Information**
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.19
**Blender Version**
Broken: version: 2.79b, 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: `rBf1aa4d18d49d`
Worked: Unknown
**Short description of error**
With unified strength unchecked, fill strength can be set to a from 0-1 (white to black for example)0.0 - 1.0 and object is filled in correctly.
With unified strength checked, the fill strength result is always the value that was used at the time of ticking the unified strength when the option was uncheckboxed. For example when the value was on 11.0 when the checkbox is ticked the strength is always 1.0 no matter what strength you choose.
**Exact steps for others to reproduce the error**
1 Open blend file
2 Select default cube
3 Go to texture paint tab
4 Add a texture to the texture slot with the top menu in the viewport (I used base color)
5 Use fill tool and leave unified strength unchecked
6 Set the color on black (0,0,0)
7 Set brush strength on 1
8 Fill; cube is now black# Open blend file
9 Ctrl-z # With the Cube selected go to `Texture Paint` mode
10 Set brush strength on .1 (or any value that is not 1 # Add a base color texture to the texture slot (from the top menu)
11 Fill; cube is now 0.1 value# Use the `Fill Tool` and leave `Unified Strength` unchecked (button next to `Strength`)
12 Ctrl-z # Set the color to black (0.0, 0.0, 0.0) and the brush strength on 1.0
13 Now check unified strength # Fill; cube is now black
14 Fill; cube is now 0.1 value# Ctrl-z
15 Ctrl-z
16 Set brush s # Now check `Unified Strength on 1 or anything but previous` and set the brush strength to 0.0
17 Fill; cube is again 0.1 value instead of black
It# Fill; cube is always the color the strength has when step 13 is donestill black
(no file attached, it is happening in startup file and any other file I checked)It is always the strength has when step 5 is done
Happens also in 2.79b and on my Mac