// Runtime Effects are allowed to call functions in sksl_shared.
// At present, the only public exposed functions are `unpremul(half4)` and `unpremul(float4)`.

uniform half4 colorGreen, colorRed;

half4 main(float2 coords) {
    float4 g = unpremul(float4(colorGreen));
    half4  r = unpremul(colorRed);

    return half4(g.rgb, r.a);
}