1uniform half2 a; 2uniform half4 b; 3void main() { 4 sk_FragColor.x = half(packHalf2x16(a)); 5 sk_FragColor.x = half(packUnorm2x16(a)); 6 sk_FragColor.x = half(packSnorm2x16(a)); 7 sk_FragColor.x = half(packUnorm4x8(b)); 8 sk_FragColor.x = half(packSnorm4x8(b)); 9} 10