Procedural Primitives & Filter

[Ruchit]

Hi, In Vray is there anything like Procedural Primitives(DSO) & RiFilter like in renderman?

Want to filter out maya particles with custom primitives at rendertime.

[ivaylo.ivanov]

You can check VRaySphereFade:
http://docs.chaosgroup.com/display/V...VRaySphereFade

It supports only spheres, but the source is in the SDK, so you can extend it if you need.

[Ruchit]

I searched lot but didn't found anything like Ripoints & Rivolumes in renderman.
How to replace particles ?

[vlado]

Can you explain in a bit more detail what you want to get as an end result? I've never used renderman (quite on purpose), and I've no idea what are rifilters, ripoints nor rivolumes.

Best regards,
Vlado

[Ruchit]

Trying to increase particle count at render time using this technique
DataExpansion

[vlado]

Ok, I see. You can do this with a scene modifier plugin that takes a particle system as an argument, reads the particles and generates another particle system at render time. I can provide you with some sample code.

Best regards,
Vlado

[bigbossfr]

I am interested also...

[Joelaff]

Would the Krakatoa PRT Cloner doe what you want?

[vlado]

Probably, but you'd have to cache the particles again if you want to render with V-Ray afterwards. If you already have a few million particles and each of them is replicated 100 times, it might be a bit on the heavy side

Best regards,
Vlado

[Joelaff]

Well, most things involving Krakatoa are kind of "heavy"

I guess VRayInstancer needs to be able to read particles directly from PRT Loaders (with PRT Cloners)

[Ruchit]

@vlado
Sample Code plz