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Terrain texture painting opacity should be additive #11367

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@MrBrax

What can't you do?

2026-07-01.19.17.12.mp4

Opacity should just be strength, no? If I keep painting, it should continue until it's fully saturated, even with opacity at 0.1. It's how you do smooth blending. Right now it's really weird that it's like a max() or something, since it doesn't remove the texture if you put the opacity to 0.1 but it will only paint more if it's higher.

There's also the strange bug of switching texture to the other blend wanting to make tiny adjustments with a 0.1 opacity, but instead it just completely wipes the other texture out.

How would you like it to work?

It should just be additive and continue painting. It's how other software works with a strength/opacity slider.

What have you tried?

I don't understand this system

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