1uniform half4 colorGreen, colorRed;
2
3void main() {
4    if (colorGreen.g == 1) {
5        sk_FragColor = colorGreen;
6    } else if (colorRed.r == 1) {
7        if (colorRed.g == 0) {
8            sk_FragColor = colorGreen;
9        } else {
10            sk_FragColor = colorRed;
11        }
12    } else {
13        sk_FragColor = colorRed;
14    }
15}
16