For those who just wanna know: cards at the time performed math on brightness values assuming a linear brightness scale when it should be logarithmic.
…ish
The maths was right, except it was all being done on colour values than already had the CRTs response curve baked into them. You may have heard of “gamma correction”. Well, this is when you correct an images colour values for the display you’ll view it on.
Blending before gamma correction and after gamma correction produce very different results. The cards were doing it after. This story is about doing it before.
Paul Debevec had similar observations around the same time. His work at the time was all about HDRI and that was put into Source a few years later.
Figured someone would do it better than me. Thanks for the correction
I do this to my silicon vendor. I apparently made some people’s lives very uncomfortable for a good while this past year after I decompiled some of their binary blobs.
That explains why Doom 3’s shading looked so bad
Mhm yes, is this going to fuck up older games?
That moment when there’s one company with which you’d almost be OK if they turned into a monopoly (still no, though).
Removed by mod
Couldn’t have even changed the obnoxious thread title from when you stole this from reddit?
I just crossposted it from Lemmy and didn’t bother changing the title. I’m not the one who took it from Reddit so calm down.
Okay, I just looked and it was @alessandro@lemmy.ca who originally posted it to Lemmy so they’re probably the one who “stole” the title from Reddit. Be mad at them.
