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Hello, im Houdini user.
Is it technically possible to implement the function as in light sources on the CPU? For example in the houdini. There is a parameter "Attenuation ramp multiplier", a very convenient and cool thing.

It is very useful when you want to change the intensity of the light source at the beginning but leave it original at the end. Without this function, I would not be able to render such a light, in this zone, there would be a very strong light.
https://i.imgur.com/SO4zEXC.jpeg
Mantra Render.

Hello seriawp,

It is currently possible in a plausible way (without breaking the quadratic light decay (inverse square law), either via the distribution input and some procedural Octane "nodes" or via IES lights, to name a couple of solutions.

Last but not least, Light Filters (from the roadmap slides: "Spectron OSL Filters: Light Decay | Blocker") are in the roadmap.
Here is a preview of it from one of the previous Jules's GTC presentation, on YouTube: https://cdn.discordapp.com/attachments/ ... 0_2021.jpg

Other than that, the Mantra reference is naturally achievable with a light at the right scale, intensity and position, as in reality (photography, cinematography).

elsksa wrote: Last but not least, Light Filters (from the roadmap slides: "Spectron OSL Filters: Light Decay | Blocker") are in the roadmap.
Here is a preview of it from one of the previous Jules's GTC presentation, on YouTube: https://cdn.discordapp.com/attachments/ ... 0_2021.jpg

After a few years, convenient controls have not been added