Eye Adaption

HAWK12HT

Hi all, so looking for the tech name used by Valve long ago during Half Life 2 Launch. The Eye Adaption effect but I am sure they used some fancy word for it and also what is the fancy name of it in UDK. (I know its done in post process UDK but one of those moment when you forget the term in head argh! )

Dvonio

Do you mean HDR?

Hope it helps you!

HAWK12HT

nope that I know.

kaptainkernals

It is HDR:

https://developer.valvesoftware.com/wiki/HDR

https://developer.valvesoftware.com/wiki/Advanced_HDR

Thoss

I think OP was originally talking about exposure control.

Unreal version is this:

https://docs.unrealengine.com/latest/INT/Engine/Rendering/PostProcessEffects/AutomaticExposure/index.html

Edit: The Valve links above don't work for me.

HAWK12HT

O_O ok cool. Thank you everyone. So Valve's is HDR, UE is calling it same Eye Adaptation and Unity called it Contrast Stretch.:)

kaptainkernals

Technically for valve, I believe it's tonemapping that does the eye adaptation, but it falls under HDR's features.

https://developer.valvesoftware.com/wiki/Env_tonemap_controller
which controls brightness (eye adaptation)

HAWK12HT

Thank you @Kaptainkernals