Shadow Frustum

[rainrtw]

Okay so I've wandered around google trying to figure out what exactly the Shadow Frustum shader flag is, what it does, and when it should be used in regards to this game and NV. What I learned from hours and hours of doing this is practically nothing at all, so I am asking here. I do not recall ever seeing a really good definition on this subject, but if I've missed something obvious then a link to anything which answers these questions would be welcome as well.

As a general rule I've always just looked for a default item similar to what I've made and copied its flags, but I would really like to understand this one a little better. My in game testing has revealed little to nothing on this as well. I can't notice a difference with or without this flag set, except I think skin shaders require it.

 

1) What is the Shadow Frustum as it pertains to modding FO3 and NV?

 

2) What does it do specifically, in turns of actual effects the player might see/notice?

 

3) Does it effect performance? If so by how much?

 

4) When specifically should it be used in a mesh? Should it only be used on things that define the character's outline/shadow they cast, only on accessories, never, always, etc?

 

Any and all answers to these would be greatly appreciated, not just by myself either as I've seen plenty of people ask about this on various forums.

Thanks in advance to anyone who knows more about this.

[Riven1978]

I myself would like to know how it pertains to FO3 and FNV as i have tried everything i can think of and cannot tell a difference, i have been able to find out only that is has to do with how shadows are cast and seen in game (one forum had a meager sentence on this, so not totally sure about it). yet changing it does nothing that I can see, maybe only effects in ultra-high mode?