VB hardware will OR the eye "offset" with the param_base instead of adding it to compute the h-bias offset, which results in incorrect behavior if the param_base isn't word-aligned. See http://perfectkiosk.net/stsvb.html#vip_worlds_h_bias
Another selfish fix for Elevated Speed, which exploits this flaw to reduce writes to VRAM
skyfloogle
commented
3 months ago
VB hardware will OR the eye "offset" with the param_base instead of adding it to compute the h-bias offset, which results in incorrect behavior if the param_base isn't word-aligned. See http://perfectkiosk.net/stsvb.html#vip_worlds_h_bias
Another selfish fix for Elevated Speed, which exploits this flaw to reduce writes to VRAM
This commit is an alternative to https://github.com/skyfloogle/red-viper/pull/43