Hi all,
I am trying to increase the particle density of a real flow sim, I have loaded in the low res version put that in a Frost object and used it as in a PRT VOL. I made sure the Frost is outputting the velocity to mapping channel 2 and in the PRT VOL I added a magma that takes the mapping channel 2 as input and outputs the velocity. When I render a single frame or in iterative mode it seems ok when I try to render a sequence I get the following error. I am not sure what I am missing here, I have been throught the documentation a few times.
First thing that comes to mind - make sure there is no frame where 0 particles are loaded and thus no mesh is created by Frost. In that case, the Frost mesh will be empty and no Mapping 2 channel would be found in the PRT Volume because it will also have 0 particles.
If this is not the cause of your problem, please send a few files and a scene and we will take a look…
That was it, no Frost on frame 0 therefore the problem. Thanks!!