Terrain.Layer Shader

Overview

The Terrain.Layer shader is used for all the terrain materials in order to paint terrain texture layers. When creating even the most simple terrain material, you always need a Diffuse map.

Since the terrain is never flat, you can make your terrain more interesting by using a Bumpmap on it.

Shader Params

Shader Param	Description	Shader Gen Option
Blend Factor	Change the visibility of the blended layer. Heightmap required.	Default (but requires OBM or POM)
Blend Falloff	Change the falloff of blending. Heightmap required.	Default (but requires OBM or POM)
Detail bump scale	See Unified Detail Mapping for more information.	Detail Mapping
Detail diffuse scale	See Unified Detail Mapping for more information.	Detail Mapping
Detail gloss scale	See Unified Detail Mapping for more information.	Detail Mapping
DetailTextureStrength	Sets the amount the Diffuse map, which is your Detail Texture is visible over the Layer Texture. The higher the value the more you see only your Diffuse map.	Default
Height bias	See Parallax Occlusion Mapping for more information.	Parallax occlusion mapping
Indirect bounce color	See Illum Shader for more information.	Default
OBM Displacement	See Displacement Maps for more information.	Offset bump mapping
POM Displacement	See Parallax Occlusion Mapping for more information.	Parallax occlusion mapping
Self shadow strength	See Parallax Occlusion Mapping for more information.	Parallax occlusion mapping

Shader Gen Params

Shader Gen Param	Description
Environment map	DEPRECATED (3.6) - See Illum Shader for more information.
Specular mask in Diffuse alpha	DEPRECATED (3.6) - See Illum Shader for more information.
Offset bump mapping	See Displacement Maps for more information.
Gloss map in Specular alpha	DEPRECATED (3.6) - See Illum Shader for more information.
Detail mapping	See Unified Detail Mapping for more information.
Parallax occlusion mapping	See Parallax Occlusion Mapping for more information.

Material Settings

By default the Terrain shader has several parameters, most notably for 3.5+ builds is the option to adjust the blending of different terrain layers instead of relying on basic fading between each other.

In order to utilize this you first need to have a height map plugged in with either OBM or POM enabled (depending on which system spec you are using) because the blending will actually use the height map to determine how the materials blend together.

For example if you have pebbles on one material and dirt as another you will likely want the pebbles to accurately stand out from the dirt.

Make sure diffuse texture is high-passed and material diffuse color is set to 255, 255, 255 white. This is required for proper add-signed blending with terrain base color.

Examples


No POM or OBM

Blending

Documentation