Painted area blinks in Weight Paint mode when the mesh is rigged (Blender 2.8.0 RC 1) #66811
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Reference: blender/blender#66811
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System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.39
Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-11 13:50, hash:
06312c6d2d
Worked: (optional)
Short description of error
blinking_in_weight_paint.mp4
When a mesh has vertex groups and is rigged, I can't paint the vertex group in Weight Paint mode.
While dragging the cursor, the painted area just blinks and has no effect.
Exact steps for others to reproduce the error
Dance_Robot_001.blend
Just paint with any brush (and take no effect)
Added subscriber: @muratagawa
Painted area blinks and cannot paint in Weight Paint mode when the mesh is rigged (Blender 2.8 RC 1)to Painted area blinks and cannot paint in Weight Paint mode when the mesh is rigged (Blender 2.8.0 RC 1)Added subscribers: @Jeroen-Bakker, @lichtwerk
Two issues that I see here:
(1) you have
vertex selection masking for painting
turned ON {F7608477}This will restrict the influence of your strokes to selected vertices, you can either select more vertices [the ones in the leg], or disable this option alltogether.
This one is not a bug.
(2) the flickering in your file is somehow caused by screen space reflections (this file is in
lookdev
viewport shading with weightpaint overlay)This is not happening if screen space reflections are turned OFF.
This is not happening in
solid
viewport shading with weightpaint overlay.If screen space reflections are turned on, pretty much everything (painting strokes, selecting vertex groups or bones, ...) will somehow invalidate the overlay and only orbiting/zooming the viewport will bring it back...
This one is a bug, and I would kindly ask @Jeroen-Bakker? to have a look (feel free to reassign if this is not for you...).
Painted area blinks and cannot paint in Weight Paint mode when the mesh is rigged (Blender 2.8.0 RC 1)to Painted area blinks in Weight Paint mode when the mesh is rigged (Blender 2.8.0 RC 1)Thanks for your advice.
I have forgot "vertex selection masking" was turned on.
FYI, the second problem (flickering) doesn't occur in the former beta version. (I'm using 2.8.74 - (2019-07-05 06:13, hash:
66684bdff3
))I think it is a bug as you suggested.
Issue is introduced by
484794ce67
EEVEE now uses a 'warm-up' sample when SSR is enabled. In the viewport these were 2 samples... I added a patch for review that fixes this.
Added subscriber: @fclem
We have researched in more depth.
TAA will make a copy of the depth buffer from the first sample. This depth buffer is from taken from the actual position of the viewpoint. (other samples shift this for anti aliasing). As SSR will reset the first 2 samples the depth buffer seems to be overwriten. It is unclear if this is related to the incorrect matrix of the viewpoint or that the incorrect buffer is being used for copy-ing. Discussed online that I will assign it to @fclem
This issue was referenced by
687f1df5db
Changed status from 'Open' to: 'Resolved'
Fixed in RC2. Thanks {icon smile-o}