resources/sksl/shared/TextureSharpen.sksl

/*#pragma settings Sharpen*/

layout(binding=0) sampler2D s;

void main() {
    float4 a = sample(s, float2(0));
    float4 b = sample(s, float3(0));
    sk_FragColor = half4(half2(a.xy), half2(b.xy));
}