Quote - As an example of something you may not be aware of, consider the following x = AGC(Blend(a, b, f)) or

x = Blend(AGC(a), AGC(b), f)

One of these is identical to render GC, the other is not. Under specific circumstances, these two produce the same output, and in other cases produce diffrrent output. Whey they differ, one of them is identical to render gc and the other is not. Can you say which is identical to render GC? Forgive the typos, I am in Edgartown Martha's Vineyard oa sailboat and only have my ipad which is hard to type on.

It looks like the first and second equations will always yield different results base on my simplistic experimentation.  The first equation seems to consistently yield a higher value than the second equation.  If x is the luminance of the object, then the first equation would be identical to render GC since my poser objects tend to look washed out each time I turn on render GC.

In which specific circumstances will the first and second equations yield the same result?