Singleton Materials

In the following example from the wiki page;

singleton Material("sunburst.skin.custom")
{
mapTo = "sunburst.skin.custom";
colorPaletteMap[2] = "vehicles/sunburst/sunburst_skin_custom_palette_uv1.dds";
overlayMap[2] = "vehicles/sunburst/sunburst_skin_custom.dds";
diffuseMap[2] = "vehicles/sunburst/sunburst_c.dds";
specularMap[2] = "vehicles/sunburst/sunburst_s.dds";
normalMap[2] = "vehicles/sunburst/sunburst_n.dds";
diffuseMap[1] = "vehicles/sunburst/sunburst_d.dds";
specularMap[1] = "vehicles/sunburst/sunburst_s.dds";
normalMap[1] = "vehicles/sunburst/sunburst_n.dds";
diffuseMap[0] = "vehicles/common/null.dds";
specularMap[0] = "vehicles/common/null.dds";
normalMap[0] = "vehicles/sunburst/sunburst_n.dds";
specularPower[0] = "128";
pixelSpecular[0] = "1";
specularPower[1] = "32";
pixelSpecular[1] = "1";
specularPower[2] = "128";
pixelSpecular[2] = "1";
diffuseColor[0] = "1 1 1 1";
diffuseColor[1] = "1 1 1 1";
diffuseColor[2] = "1 1 1 1";
useAnisotropic[0] = "1";
useAnisotropic[1] = "1";
useAnisotropic[2] = "1";
castShadows = "1";
translucent = "1";
translucentBlendOp = "None";
alphaTest = "0";
alphaRef = "0";
dynamicCubemap = true;
instanceDiffuse[2] = true;
materialTag0 = "beamng"; materialTag1 = "vehicle";
};

The normalMap is repeated multiple times, as are others.
normalMap[2] = "vehicles/sunburst/sunburst_n.dds";
normalMap[1] = "vehicles/sunburst/sunburst_n.dds";
normalMap[0] = "vehicles/sunburst/sunburst_n.dds";

What is this effect on materials?

 

Thanks for the reply. I removed the duplicates and found no difference.

 

is it the same for the specular maps?