![]() Performance-wice, each extra AOV layer adds between 10 and 20 percent of the time it takes to denoise the beauty image, so adding extra layers is relatively inexpensive. Layered AOV denoising can even be used seamlessly with the tiled denoising features that shipped with OptiX 7.1, there is nothing tricky that needs to happen when combining these features. This is especially important when denoising layers that have a lot of black background in them, because this kind of imagery can get badly blurred and look wrong when you denoise each layer separately. The benefit of denoising all the layers together is that the denoiser will filter all the image layers in the exact same way, ensuring that a composited set of layers still looks correct. OptiX 7.2 has added the ability to denoise multiple AOV layers simultaneously along with the color image in a single denoising pass.
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