State:New|TargetRelease:No Target|icon_bug|icon_nuke|database:public|Resolution:Fixed|BugID:540172|
Problem summary
ContactSheet adds seams\gaps to borders in the Alpha channel when using "Frames instead of inputs".
Customer reported version
Nuke 14.0v3
Customer reported platform
macOS 13
Steps to reproduce
1) Open Nuke and open attached script or use the following steps.
2) Click Edit > Project Settings... and change the full size format to UHD_4K 3840x2160.
3) Create a Constant node and open the Constant node properties bin, change the channels to RGB and then expand the format drop down menu and click new, under file size enter w 3600 h 3600 with any name and then click OK.
4) Create a ContactSheet node and connect the Constant node to input of the ContactSheet.
5) Open the ContactSheet node properties bin and change the Resolution to 14400x10800, turn on Use frames instead of inputs and change Frame range to 1 to 100.
6) Attach the Viewer to the ContactSheet node and view the Alpha channel.
Expected behaviour
For the Alpha channel to display no seams\gaps.
Actual behaviour
The ContactSheet is adding seams\gaps to its borders in the Alpha channel when the gaps is set to 0.
Workaround
Open the Viewer properties bin and turn on "Use GPU for viewer when possible" and change the dithering algorithm to "low frequency".
Reproduced by support
This bug has been reproduced in:
Nuke 14.0v4 - Windows 10 - macOS 12.6.5 - CentOS 7
Nuke 12.0v1 - Windows 10 - macOS 12.6.5 - CentOS 7
Nuke 9.0v1 - Windows 10
Earliest version tested
Nuke 9.0v1 - This issue appears to be in all tested versions of the product
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