material track000 { technique { pass { ambient 0.2 0.2 0.2 1 diffuse 0.7 0.7 0.7 1 texture_unit { texture Asphalt1.tga } } } } material track001 { technique { pass { ambient 0.2 0.2 0.2 1 diffuse 0.7 0.7 0.7 1 texture_unit { texture GrassAndDirt.tga } } } }