[Sir_Skurpsalot]

Does anyone have a method (doable in GIMP) for preparing a texture to be used as a terrain detail texture? Trying to find a method for consistently and
accurately centering an image's color levels around 128 that I can repeat for each of my textures. Thanks for reading.

[fLUnKnhaXYU]

I dont really , just wondering if using color/colorBalance and saving the preset could be useful .

[Sir_Skurpsalot]

Going to Color --> Levels and moving the middle triangle slider in input levels to the tallest part of the graph and clicking ok, and repeating 2 more times, then changing the output levels to min 108 max 148 seems to work pretty well.

[Duion]

Simple method, just desaturate, having color levels around 128 helps, but you can change the intensity inside the engine as well.

Complicated method is understanding how the blend algorithm works and then try and error.

What I do now is, I do not even desaturate fully, but leave some color in the detail texture, because sometimes having everything grey around 128 color level makes the texture look bad and unrealistic.

You have to understand that each texture layers color intensity gets added to the others, so you have to use your instincts to make the textures roughly neutral.