Hi,
I have a scene with several particle streams.
Each one is saved in a separate, partitioned .prt sequence, so I have several prt loaders.
Was wondering if there’s a way, using custom data render element for example, to separate the prts after rendering, like with vray multimatte.
Render once, but with each stream separated thanks to the render elements. That’s it. Anyone?
Thanks!
You could add a Magma modifier to each PRT Loader and set a simple ID channel based on the NodeID of the PRT Loader.
Then add a custom Render Element and use that ID to generate a color. Or you could create your own channel and set a color per PRT Loader directly, then just read that channel and output.
Obviously, this will give you a multi-ID mask, but it won’t be able to provide “deep” data because each pixel can be affected by several semi-transparent particles, but just the closest one will prevail.
Alternatively, you could set up N Render Elements and write the mask of a single PRT Loader into each. This will give you separate masks per Loader, but still won’t give you any idea about how they overlap.
Volumetric rendering is really not a good place to generate Render Elements from, but what you asked for is definitely possible.
Cheers Bobo!