How does armour applying to elemental damage actually work?

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GatoPreto1718#7829 wrote:

Also, it's only for physical dmg, for elemental dmg there are the resistance.

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DEvil27#6183 wrote:

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GatoPreto1718#7829 wrote:

Also, it's only for physical dmg, for elemental dmg there are the resistance.

Obviously, I'm talking about Heatproofing (on skill tree) and some new soul cores added with patch 0.2.1 that make amour to apply to elemental dmg.

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DEvil27#6183 wrote:

I know that, according to the official wiki, armour is applied before damage reduction from elemental resistance, but how is it actually calculated?

For example, let's suppose a hit deals 1,000 raw damage, and armour provides 10% damage reduction on a character with 75% resistance.

I can see two possible ways to interpret this:

a) Damage reduction from armour and resistance are additive:
Total reduction = 10% + 75% = 85%
Net damage taken = 150

b) Damage reductions apply sequentially:
Damage after armour = 1,000 × (1 - 0.1) = 900
Net damage taken = 900 × (1 - 0.75) = 225
Total reduction = 77.5%

Which system is actually used in the game? Or is it something else I haven’t considered?

Also, if system A is used, is it limited by the maximum resistance (default = 75%) or capped maximum resistance (90%)?

A response from GGG staff would be greatly appreciated to clarify this, as it significantly affects armour’s effectiveness when applied to elemental damage.

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Mark_GGG wrote:

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DEvil27#6183 wrote:

b) Damage reductions apply sequentially:
Damage after armour = 1,000 × (1 - 0.1) = 900
Net damage taken = 900 × (1 - 0.75) = 225
Total reduction = 77.5%

This is correct. Armour is fully applied to damage, mitigating some of the value, before resistances apply.