ID 466352 - Small artifacts occur when multiple patches have a similar UV layout and using the Clone or Blur tools.

Problem summary

Small artifacts occur when multiple patches have a similar UV layout and using the Clone or Blur tools.

Customer reported version
mari.4.7v1

Customer reported platform
windows10

Steps to reproduce

1) Create a project with a model that has at least 2 patches (UDIMS).

2) Ensure the patches have similar textures in the UV layout, perhaps offset by a few pixels

3) Disable Patch 1002 and click Patch 1001 to focus it.

4) In the Orthographic view, use the Clone or Blur tool on the 1001 UDIM patch.

Expected behavior
The cloned/blurred texture should appear identical and without artifacts.

Actual behavior
Artifacting/corruption is present on the cloned/blurred texture.

Workaround
Using the Clone/Blur tool on the 2nd patch (1002) does not have the issue occur.

Reproduced by Support in:

Mari 4.7v1 - Windows 10

Mari 4.6v1 - Windows 10

Mari 4.5v1 - Windows 10

Mari 4.0v1 - Windows 10

Mari 3.0v1 - Windows 10

Mari 2.6v5 - Windows 10

Earliest version tested
Mari 2.6v5 - This issue appears to be in all versions of the product