ID 392753 - Artifacting on Deepholdout outputs at geometry edges.

Problem summary

Output from DeepHoldout operations shows aggressive artifacting when generated by scan-line render with multi-sampling or anti-aliasing turned on.

Steps to reproduce

1) Download attached script.

2) Create viewer look at dot labelled "Incorrect with holdout comp" on.

3) Change the deep merges Compute Occluded samples checklist on. You should now be able to see the artifacting.

Expected behaviour
Outputs from DeepHoldout operations should not show any artifacting.

Actual behaviour
Output from DeepHoldout operations shows aggressive artifacting when generated by scan-line render with multi-sampling or anti-aliasing turned on.

Reproduced by support
This issue has been reproduced by the developers.