Texture Naming

All texture files must follow the defined naming scheme. Postfixes in the file names indicate the type of data contained within each texture.

File names must follow the name__postfix.tga pattern, where:

name — any appropriate name. Must not contain consecutive double underscores.
postfix — specifies the type of data contained within the texture (refer to the table below).

Warning

Make sure to follow the naming scheme, as it is required to enable texture streaming for the mod. Particularly, mods with the wrong texture naming result in memory leaks on consoles and will not be approved.

Texture formats¶

There are 5 main texture formats:

Diff¶

Diffuse RGB colour. It can optionally have transparency (Transp) or Alpha‑Kill mask (AKill) in the Alpha (A) channel.

	Description
Usage	Bodywork, cabin interior, windows, tyres, wheel rims, and similar materials
Postfix	None

Normalmap¶

Normal data — vectors that determine how light reflects off a surface.

	Description
Usage	Any surface where detail should be present.
Postfix	`_nm`

Specular¶

Specular highlights, metallness, roughness, and ambient occlusion.

	Description
Channels	Metalness(r)+Roughness(g)+AO(b).
Postfix	`_spec`

Height Detailed Mapping¶

Heightmap for detail mapping with two channels: heightmap for height information and detMask for the mask that defines areas where the detailed normal map is visible.

	Description
Usage	Tyre tracks.
Postfix	`__hdetm`

Emissive¶

Light emitting.

	Description
Usage	Headlights, taillights, brake lights, dashboard lights, and other self‑illuminating objects.
Postfix	`___em`

Texture channel layout¶

Texture	Channel	Description
`diff`	RGB	Diffuse color
	A	Transp / Alpha Kill mask / Roughness
`nm`	RGB	Normals
`spec`	R	Metalness
	G	Roughness
	B	Ambient occlusion (AO)
`em`	RGB	Emission
	A	Ambient occlusion (AO)
`hdetm`	R	Heightmap
	G	Detail Texture Mask (DetMask)