I think it would be great to have a random value node for RPR. For example to connect with a color ramp to slightly change the look of leaves on a tree with particle system.
Do you mean random as in noise? Or random per object? Or something else?
I'm not quite shure how they solved it in cycles renders' 'object info node'. But i think it gives a value from the position in 3d-space for each object or instance. I think, it's a pretty decent solution. Even though i like your suggestion to make use of noise as well.
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