1layout(set=0) uniform float4x4 colorXform;
2layout(binding=0) uniform sampler2D s;
3
4void main() {
5    float4 tmpColor;
6    sk_FragColor =
7            half4(1.0) *
8            (tmpColor = sample(s, float2(1)),
9             half4(colorXform != float4x4(1.0)
10                           ? float4(clamp((float4x4(colorXform) * float4(tmpColor.xyz, 1.0)).xyz,
11                                          0.0, tmpColor.w),
12                                    tmpColor.w)
13                           : tmpColor));
14}
15