sksl/shared/ArrayUnsizedParam.sksl

struct S {
    float y;
};

// Unsized array parameters only work with readonly buffers.
layout(set = 0, binding = 0) readonly buffer testStorageBuffer {
    float[] testArr;
};
layout(set = 0, binding = 1) readonly buffer testStorageBufferStruct {
    S[] testArrStruct;
};

noinline float unsizedInParameterA(float x[]) { return x[0]; }
noinline float unsizedInParameterB(S x[]) { return x[0].y; }
noinline float unsizedInParameterC(float[] x) { return x[0]; }
noinline float unsizedInParameterD(S[] x) { return x[0].y; }
noinline float unsizedInParameterE(float[]) { return 0.0; }
noinline float unsizedInParameterF(S[]) { return 0.0; }

noinline half4 getColor(float[] arr) {
    return half4(arr[0], arr[1], arr[2], arr[3]);
}

noinline half4 getColor_helper(float[] arr) {
    return getColor(arr);
}

void main() {
    sk_FragColor = getColor_helper(testArr);

    unsizedInParameterA(testArr);
    unsizedInParameterB(testArrStruct);
    unsizedInParameterC(testArr);
    unsizedInParameterD(testArrStruct);
    unsizedInParameterE(testArr);
    unsizedInParameterF(testArrStruct);
}