1/1/2026 at 11:21:21 PM
Isn't that just Half-Lambert that Valve came up with for Half-Life?"To soften the diffuse contribution from local lights, the dot product from the Lambertian model is scaled by ½, add ½ and squared. The result is that this dot product, which normally lies in the range of -1 to +1, is instead in the range of 0 to 1 and has a more pleasing falloff. "
by skocznymroczny
1/2/2026 at 1:36:39 AM
It is. Takes me back to asking valve about this for my bachelor thesis 15 years ago and getting a personal reply from Gabe Newell who CC’d the developer who came up with the formula, him being all giggly whether I also want to know about skeletal animation that he came up with or the lip sync stuff. Fun guysby eska
