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Kevin Monnier avatar image
Kevin Monnier asked ·

Lightfilter to multiply the intensity/exposure/saturation

Hello everyone,

I used this light filter in the past PxrIntMultLightFilter and I was wondering if Arnold had a similar option? An example where this filter was useful : I have a saturated green light and I would like to desaturate this light only for a character to bring back is local tone or slighly reduce the exposure on an asset.

Do I need to write my own light filter ?

Thanks in advance


lightfilters
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Kevin Monnier avatar image
Kevin Monnier answered ·

thank you for the answer Julius. I will test that.

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Julius Ihle avatar image
Julius Ihle answered ·

Hi,

I only have half the answer, but a similar question in general. You can write this lightilter relatively easily. I attached an example that allows you to multiply the existing light's values with exposure/intensity and color multipliers:

https://www.dropbox.com/s/i44rrdu9g79amtu/jiMultFilter.cpp?dl=0


However one thing I'm wondering as well is whether it is possible to light-link lightfilters in KtoA. I haven't been able to make it work yet. Is this possible or on the roadmap @Mike @Pal ?


Thanks,

Julius

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