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When encapsulateInstanceGroups is turned on, the Instancer evaluates the transform of the prototype root at times according to the transform segments for the instancer itself, rather than the transform segments of the prototype root.
Steps to reproduce
Render the script below and observe linear motion blur in the output.
Turn off Instancer.encapsulateInstanceGroups and re-render. Observe curved motion blur.
Turn Instancer.encapsulateInstanceGroups back on, and enable the Group node. Re-render, and observe curved motion blur. This demonstrates the problem applies only to the transform samples for the root of the prototype.
Version: Gaffer 1.3.10.0
Description
When
encapsulateInstanceGroups
is turned on, the Instancer evaluates the transform of the prototype root at times according to the transform segments for the instancer itself, rather than the transform segments of the prototype root.Steps to reproduce
Instancer.encapsulateInstanceGroups
and re-render. Observe curved motion blur.Instancer.encapsulateInstanceGroups
back on, and enable the Group node. Re-render, and observe curved motion blur. This demonstrates the problem applies only to the transform samples for the root of the prototype.Example script
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