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[#32643] Masking painting bug with multi-res

Date:
2012-09-24 12:36		 Priority:
3
State:
Closed
Submitted by:
Campbell Barton (campbellbarton) 		Assigned to:
Nicholas Bishop (nicholasbishop)
Category:
None		 Status:
Fixed / Closed
Relates to:
Duplicates:
Patches:
 
Summary:
Masking painting bug with multi-res
Detailed description
when painting mask on multi-res with higher resolutious there is a strange glitch.

painting one point ends up effecting many others.

See attached blend file, Paint over the 'X'

See the top half of the plane is darker from painting once once the bottom.

Followup

Message
  • Date: 2012-09-24 12:40
  • Sender: Campbell Barton
  • Note, if you delete one level of multi-res, then paint mask (which works fine), then subdivide again - the strange top-half dark area comes back.
  • Date: 2012-09-24 14:08
  • Sender: Nicholas Bishop
  • Couldn't confirm this on latest master, although I did find the mask is drawing way darker than it did in 2.64rc1 (probably due to the diffuse material color change from Sergey?)

    Will investigate this further after work.
  • Date: 2012-09-24 14:21
  • Sender: Sergey Sharybin
  • Nick, yes since diffuse color commit mask became darker. I simply used diffuse_color * (1.0f - mask_value). If you think it's not completely nice, we can scale mask_value to 0.25 .. 1.0 to match both pre-mask diffuse color for non-masked regions and match original mask color for completely masked area before my changes.
  • Date: 2012-09-25 02:41
  • Sender: Nicholas Bishop
  • Sergey: yes, I think it'd be good to scale the color. Otherwise it goes quickly to black and the surface of the mesh becomes impossible to see.

    Campbell: played around with this a bit more, but still couldn't reproduce the bug on the file you provided. Tested latest trunk on Ubuntu 64-bit with Radeon/Gallium. Maybe a driver-specific issue?
  • Date: 2012-09-26 07:40
  • Sender: Campbell Barton
  • tested with Mesa (SWRAST driver), (latest GIT build), and it gives the same problem - see attached screenshot.
  • Date: 2012-09-27 05:09
  • Sender: Nicholas Bishop
  • Was able to reproduce this on a different computer, only with VBO off.

    The really weird thing is that if you mask it and get that dark area up top, then go into edit mode and rotate 45 degrees, then back to sculpt mode, the dark region doesn't rotate with the mesh -- it stays above the X axis creating a jagged region of masked polys.

    Really confused by this, but at least I can reproduce it here now.
  • Date: 2012-09-30 17:08
  • Sender: Sergey Sharybin
  • Reverted buggy commit. Proper fix for diffuse color will go after 2.64 release.
 

Attached Files:

Name Date Download
paint_mask_bug.blend 2012-09-24 12:36 Download
paint_mask_bug.png 2012-09-24 12:36 Download
paint_mask_bug_mesa.png 2012-09-26 07:40 Download

Changes:

Field Old Value Date By
status_idOpen2012-09-30 17:08nazgul
close_dateNone2012-09-30 17:08nazgul
StatusConfirmed2012-09-30 17:08nazgul
StatusInvestigate2012-09-27 05:09nicholasbishop
StatusNew2012-09-26 07:40campbellbarton
File Added22176: paint_mask_bug_mesa.png2012-09-26 07:40campbellbarton
File Added22152: paint_mask_bug.png2012-09-24 12:36campbellbarton
File Added22151: paint_mask_bug.blend2012-09-24 12:36campbellbarton