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Patterned textures are complex textures made up of multiple textures. The component textures may be plain textures or may be made up of patterned textures. A plain texture has just one pigment, normal and finish statement. Even a pigment with a pigment map is still one pigment and thus considered a plain texture as are normals with normal map statements.
Patterned textures use either a texture_map statement to specify a blend or pattern of textures or they use block textures such as checker with a texture list or a bitmap similar to an image map called a material map specified with a material_map statement.
The syntax is...
texture { [PATTERNED_TEXTURE_ID] [TRANSFORMATIONS...] } |
texture { PATTERN_TYPE [TEXTURE_PATTERN_MODIFIERS...] } |
texture { tiles TEXTURE tile2 TEXTURE [TRANSFORMATIONS...] } |
texture {
material_map{
}
}
texture_map{ TEXTURE_MAP_BODY }
There are restrictions on using patterned textures. A patterned texture may not be used as a default texture (see section "The #default Directive"). A patterned texture cannot be used as a layer in a layered texture however you may use layered textures as any of the textures contained within a patterned texture.
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