Fade parameter doesn't working correctly with some Paint Tools
Submitted by jose americo gobbo
Created attachment 348726 spreadsheet result with paint tools (paintbrush, pencil, airbrush and smudge).
The paint tools are presenting problems with Fade Options. See attachment 'fade-options-status-and-bugs.ods'. All tests are made with same brush and a default dynamic curve (linear). All are executed on GIMP Git Master 2.9.5 commit 10360c9e Ubuntu Gnome 14.04.2 - GNOME 3.10
- Round dark brush, Flat dark brush;
- Paint dynamic to set the fade with each output.
Main setup on Tool Options
- Size brush fixed in 25px
- Hardness 100
- Force 50
- Jitter 2
- Rate max
- Flow max
Paint tools with problems are the Paintbrush, Pencil, Airbrush and the Smudge. I didn't have time to test all paint tools, but is probable that issues are the same... but in the next days I will verify the paint tools not mentioned yet in this bug report.
In short the main issues are:
Hardness x Fade (all tools): apparently the curve is applied, but with strange artifacts... The process presents delay. See attachment 'hardness-issues_fade.jpg'.
Rate x Fade | Airbrush: apparently the Rate is not working, with a linear paint dynamics doesn't produces any variation. The behavior when you change Fade lenght and/or Repeat type is always the same or seems. Are welcome tips for me test this tool. See attachment 'rate-issues-airbrush_fade.jpg'.
Rate x Fade | Smudge: is 'working incorrectly' only with 'Reverse' option. The linear curve and fade length are not applied. See attachments 'rate-issues-smudge-1_fade.jpg' and 'rate-issues-smudge-2_fade.jpg.
Attachment 348726, "spreadsheet result with paint tools (paintbrush, pencil, airbrush and smudge).":