Const phong_get_material_pars_fragment
phong_get_material_pars_fragment: "ObjectSpaceRaymarchPhongMaterial getMaterial(vec3 position, vec3 worldPosition, vec3 worldNormal) {return ObjectSpaceRaymarchPhongMaterial(diffuse, emissive, specular, shininess);}" = `ObjectSpaceRaymarchPhongMaterial getMaterial(vec3 position, vec3 worldPosition, vec3 worldNormal) {return ObjectSpaceRaymarchPhongMaterial(diffuse, emissive, specular, shininess);}`