1layout(webgpu, set=1, texture=2, sampler=3) sampler2D tex; 2 3void main() 4{ 5 half4 a = sample(tex, half2(1)); 6 half4 b = sample(tex, half3(1)); 7 half4 c = sample(tex, half3(1), -0.75); 8 sk_FragColor = a * b * c; 9} 10