Hi all, I'm having some trouble with the following scenario.
I have a CameraOp that uses a custom LensNFunc. In my LensNFunc, I'm only modifying the P() attribute of the passed in VArray. This works fine, except for the fact that it messes up the motion vectors output of the ScanlineRender. Even with a simple "perspective projection" function, I can get the results to match those of a standard camera, except for the motion vectors output. I've tried writing over both the MB and VEL channels of the VArrays passed to my LensNFunction, but the ScanlineRender doesn't seem to care about them. What does ScanlineRender use to compute motion vectors before writing them out? FWIW, if I turn on multi-sampling in the ScanlineRender I do get a correct result, so I assume my the scene is being split correctly, and my LensNFunc is performing the perspective projection for each split, but for some reason the motion vector output is way off. Any help / ideas? Thanks, Ivan
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