This change removes the need to return pidx from raymarch().
This is desired because:
Neural fields & interpolation logic is simplified everywhere, no need to reshape / expand anymore
Some raymarchers will not return pidx (i.e. upcoming DDA)
No NeF / grid relies on it for now anyway
Fix SDF pipeline
This change removes the need to return pidx from raymarch(). This is desired because: Neural fields & interpolation logic is simplified everywhere, no need to reshape / expand anymore Some raymarchers will not return pidx (i.e. upcoming DDA) No NeF / grid relies on it for now anyway
Signed-off-by: operel operel@nvidia.com