blackbody radiation

[MENOZ]

Hello

I'm reading this paper around page 181 http://magnuswrenninge.com/content/pubs/ProductionVolumeRenderingSystems2011.pdf

so, plank() should return the emission of energy (luminosity?)

and stdObserverX,Y,Z() should return the colors

and then I will convert from cie space to rgb and bake into a lut.

for the plank() I found various formulas online and maybe I could implement it.. I gave it just a quick look..

Can anybody tell me how to find the color in CIE coor space? what's hiding in that stdObserver() function?

I never tried those things before..

[Serg]

Hello

I'm reading this paper around page 181 http://magnuswrenninge.com/content/pubs/ProductionVolumeRenderingSystems2011.pdf

so, plank() should return the emission of energy (luminosity?)

and stdObserverX,Y,Z() should return the colors

and then I will convert from cie space to rgb and bake into a lut.

for the plank() I found various formulas online and maybe I could implement it.. I gave it just a quick look..

Can anybody tell me how to find the color in CIE coor space? what's hiding in that stdObserver() function?

I never tried those things before..

I would suggest hacking around the Pyro shader for clues. I keep meaning to try and hack a black body vop out of it but am too busy.

[MENOZ]

I would suggest hacking around the Pyro shader for clues. I keep meaning to try and hack a black body vop out of it but am too busy.

from what I understood the pyro shader use an array variable with all the colors, something like a LUT i'd say

to avoid to recalculate all the part before. exactly how it's described in the paper that i've posted before.

I just wanted to know how to get those values