How Expose Weakness truly works?

[fateriddle]

I'm talking about rogue's talent Lethality/Expose Weakness:

... plus (4 + [4]20cTStD:Cun ) (effective) bonus weapon damage and 10–25cTL:50 additional weapon resistance penetration for each probing strike that hit.

What "weapon resistance penetration" stands for?
1. Does it reduce resistance of all element?
2. Does proc damage count as "weapon damage" for the purpose of "weapon resistance penetration" ?

Hope someone who can read the code clarifies it.

btw, how do I enter test mode? So maybe I can test it out.

[Micbran]

"weapon resistance penetration"

don't feel like looking at the code, but probably res pen that only applies to weapon attacks

proc damage most likely does not, but once again, didnt check

[minmay]

The accuracy gets added as effective accuracy, not raw accuracy.
The weapon damage is like it's added to the "Damage" number on your character sheet.
The damage penetration gets added to your penetration during damage projection for melee and archery attacks. So if you have 25% all penetration and 50% fire penetration, you have a total of 62.5% fire penetration, and then if you have 20% penetration from Expose Weakness your final fire penetration is 82.5%.

Yes, these are all flagrant scaling violations.

[fateriddle]

The accuracy gets added as effective accuracy, not raw accuracy.
The weapon damage is like it's added to the "Damage" number on your character sheet.
The damage penetration gets added to your penetration during damage projection for melee and archery attacks. So if you have 25% all penetration and 50% fire penetration, you have a total of 62.5% fire penetration, and then if you have 20% penetration from Expose Weakness your final fire penetration is 82.5%.

Yes, these are all flagrant scaling violations.

Thanks, I read the code the other day, and sort of figured out when I see `state.isArcher & state.isMelee`. So proc damage won't share the penetration, but it works on every type as long as it comes from weapon. Btw, I just found out that resist lower cap at -100%, so more penetration the better, nothing come to waste.

[PseudoLoneWolf]

Btw, I just found out that resist lower cap at -100%, so more penetration the better, nothing come to waste.

Resist penetration and resistance lowering are two different things. You can LOWER something's resist to negative values, which confers a weakness to that element, but you can't pierce 10% fire resist with 25% fire penetration and get an effective -15% fire res. If I remember correctly, in fact, penetration is based on their resistance, so in this example you'd only actually pierce 25% of 10%, leaving your enemy with an effective 7.5% fire resistance.