ɐ sˈɜːfɪs stˈaɪl ɪz dᵻfˈaɪnd baɪ ˌʌp tə fˈoːɹ lˈeɪɚz ʌv ʃˈeɪdɚz, wˌɪtʃ pɹədˈuːs kˈʌlɚ, ɹᵻflˈɛkʃənz, tɹænspˈæɹənsi, ænd bˈʌmp ɪfˈɛkts.
A surface style is defined by up to four layers of shaders, which produce color, reflections, transparency, and bump effects.