What cconfiguration is required for nuke camera projections. ?

[bhavikvfx]

Wanted some help on nuke camera projection.
What basic configuration is required to use camera projection in nuke ?
I have found that while using projection nuke gets slower.
Help ...!!

[radders]

Of course it's going to get slower, you're doing a 3D operation. It's much more processor hungry that a 2D transform. You can always render out that part of your script once you're happy with it and read it back in.

[bhavikvfx]

Thanks for the guidance.
So what kind of system requirement needs to there to run smoothly
As lot of movies are done on basis of projections.
How to make the work faster ?

[radders]

I don't really know. I just get given a machine to work on. At my previous place most compositors had 8 core machines with 16GB RAM. I managed to get one of the new HP machines with 12 cores and 24GB RAM but I was working with massive pieces of geometry. in stereo and it was still slow. Some of the paint and roto guys, who did lots of projection had 4 core machines and just had to deal with it.

You can have simple projections, just on a card, with a small image, which are fast, or you can load up huge models and project 17k matte paintings and it will be slower. Just get the best machine you can afford.

[radders]

I should point out that there are plenty of ways to optimize your script, like using the vector blur node after your scanline render to do your motion blur instead of doing it with the multisamples setting in the scanline render node.

[bhavikvfx]

But I have noticed machine gets slower also while projections.
Don't know why
Is there in specific preference settings for 3d projection, geos, etc. ?