Manual Sub-Layer Drawing

You also have the ability to manually draw Sub-Layers on the terrain. You can then add, multiply, or subtract all your masks using the manually drawn values.

To draw them, select the Sub-Layer you want to draw in the Landscape's Paint tab and assign a Non-Weight Blended Layer Info to it.

Be sure to set it as "Non Weight-Blended" !

Once done, you'll be able to manually paint the Sub-Layer on your Biome using Unreal's paint layer landscape features.

Demonstration

These illustrations are in LOOKDEV View.

The Sub-Layer 1 in Red is under the Sub-Layer 2 in Green.

Even when drawn, Sub-Layers keep their order.

Sub-Layer 1 (red) under the green Sub-Layer 2.

Using the Manual drawing mode settings that are at the top of the Mask Settings, we can change how the masks overlap with the manual drawn section.

Here are the 3 modes of painting in action :

+ (Addition)

* (Multiply)

- (Subtract)

Depending on your needs, manually painting can be a powerful way of using masks only on some parts of the landscape, excluding the mask somewhere, or forcing it on other places.

If you subtract a mask on an entire landscape chunk, then it won't be computed, like this:

Shader Complexity

If you want to paint layers on top of everything else, you'll need to use Correction Layers.

See Biomes Workflow for more information.