Agemixer(09:16:14)
"simple" as that in the end. then it is uust about few lookups for that texture and plot
Agemixer(09:15:11)
light data that reflects on that bump. You only need that 4th table of offswt for lookup, and multiplu that brightness info with the current pixel colour you process
Agemixer(09:13:49)
add sinus multiplier (or sinus lookup table or sth) for that angle, it comes out as X and Y points of offset from that point you going to calculate. So the final 4th texture table defines just offsets where to look at the surrounding texture the light
Agemixer(09:09:45)
So the delta is the difference between heights, you can make a 3rd texture of that height delta info, it defines a reflection angle
Agemixer(09:08:05)
So there is basically that 2D texture and another heights info texture, similiar, kind of.