In UE3 Post process volumes used to have a blend speed value (not sure if it was actually called blend speed) that you could adjust to affect the time it takes to blend in or out when you exit the volume. UE4 PP doesn’t seem to have this feature that I can find anywhere. Am I missing something or is this actually a missing feature?
you’re after blend radius
Oh ok so the size of the radius determines how long it takes to fade? Thanks!
Any idea why my Post Process volume isn’t working when I PIE but it works just flying around in the editor? I’ve got an unbound PP in the scene too so I set the volume based one to an order of 3 and the unbound to 1 but it still won’t activate in game.
My future self found my way back here as of UE 5.7, and this is still frustrating as hell compared to UE 3.
The blend radius does not change the time it takes for the blend to happen. It simply increases the distance at which the blend begins. This is not the same thing. If I’m moving into a darker room for example, I don’t want the darkening to happen before I enter the room. UE 3/UDK used to have the ability to adjust the blend time and UE 4 & 5 no longer support this which honestly sucks.
You can’t even adjust the blend weight of the PP volume with a timeline because it acts as a boolean. Anything less than a blend weight of 1 is off even after adjusting the priority of the PP Volume. It does work for Post Process Materials if you code the material properly, but I’m not using a PPM. I just want to control the exposure of my scene.
I hate sounding like an old man complaining about how things were better in the past, but in this case it’s true. Give us back Post Process blend speed control Epic!
*Update: https://www.youtube.com/watch?v=YwsgrY_pkNk
In a very convoluted manner you can adjust the values in realtime, so rather than worrying about the blend weight which is broken, you can just use a timeline to adjust any values you like directly.
It’s not easy, but at least it’s possible.
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