ID 422272 - Artifacts and jagged edges are present when baking painted areas next to hidden faces.

Status Update: This is expected behaviour in Mari and part of how the projection engine works by design. During the Paint>Bake process, a texel belonging to another UV face which is hidden acts as a mask and appears to cause UI artefacts. In the example screenshot, pixel one is white (painted) and pixel two is hidden, so Mari is unable to calculate how to blend finely between the two (paint fall off) and removes this texel from the bake assuming that it is hidden intentionally. The same behaviour can be seen if a face is selected and filled with the colour.

Problem summary
Artifacts and jagged edges are present when baking painted areas next to hidden faces.

Customer reported version
mari.4.5v2

Customer reported platform
rhel7

Steps to reproduce

1) From Mari, create or load a project.

2) Select Face Mode, and choose the Select tool.

3) Click and drag a box on the object to select faces.

4) Right-click the Viewer to open the context menu and select Visibility > Hide Selected .

5) Paint on the object around the hidden edges and bake it, observing the output.

Expected behavior
The edges should appear without artifacting or gaps.

Actual behavior
The edges of the hidden faces appear with artifacting or gaps after baking the paint.

Workaround
There is no available workaround at this time.

Reproduced by Support in

Mari 4.6v1 - Windows 10, CentOS 7
Mari 4.5v1 - Windows 10

Mari 4.2v1 - Windows 10

Mari 4.1v2 - Windows 10

Mari 4.0v4 - Windows 10

Mari 4.0v1 - Windows 10

Mari 3.4v4 - Windows 10

Mari 3.4v1 - Windows 10

Mari 3.3v1 - Windows 10

Mari 3.0v1 - Windows 10

Mari 2.6v5 - Windows 10, CentOS 7

Earliest version tested
Mari2.6v5 - This issue appears to be in all versions of the product