VPro provides some very advanced capabilities such as per-pixel lighting, also known as "phong shading", (through the SGIX_fragment_lighting extension) and 48-bit RGBA color.
vˈiː pɹˈoʊ pɹəvˈaɪdz sˌʌm vˈɛɹi ɐdvˈænst kˌeɪpəbˈɪlᵻɾiz sˈʌtʃ ɐz pɜːpˈɪksəl lˈaɪɾɪŋ, ˈɔːlsoʊ nˈoʊn æz "fˈɑːŋ ʃˈeɪdɪŋ", θɹuː ðɪ ˈɛsdʒˈɪks fɹˈæɡmənt lˈaɪɾɪŋ ɛkstˈɛnʃən ænd fˈoːɹɾi ˈeɪtbˈɪt ˌɑːɹdʒˌiːbˌiːˈeɪ kˈʌlɚ.