Anders Langlands
Anders Langlands
For the spec you could say something like "exitant radiance in an RGB renderer should be computed as `emission_luminance * emission_color` to make it really explicit. I have a slightly...
I’ve been using “RGB luminance” as a shorthand but I’ve not found a term I like either. On Fri, 23 Feb 2024 at 11:25, Thomas Mansencal ***@***.***> wrote: > Can...
In the UsdLux proposal I linked above I give a brief overview of that in the "Quantities and Units" section. @portsmouth you could crib that if you like? The other...
what's the "model color space"?
I feel like you're overcomplicating this. Why not just define it in terms of a multiplication of the rendering colour space white?
> so the same model parameters would lead (technically) to different physical emission in different renderers. I guess you assume this isn't an issue in practice? There is no "physical...
> In this interpretation, the emission_color components don't have units of luminance then, they are basically scale factors. Presumably we should require they live in [0, 1] Yes, they're scale...
OK I think we're saying the same thing here ultimately. The discussion of SPDs above was confusing. Utlimately, as we said above, the process needs to be: ``` L =...
You're defining `emission_luminance` to be in nits, right? Therefore the implementation is responsible for ensuring correct normalization (if it's a spectral renderer)
Yes, I think saying emission_luminance is in nits is enough, and more to the point is simple enough to avoid confusion. Anyone who's just using an RGB renderer doesn't need...