SKIP: FAILED fn isNormal_b00ab1() { var res : vec2 = isNormal(vec2()); } [[stage(vertex)]] fn vertex_main() { isNormal_b00ab1(); } [[stage(fragment)]] fn fragment_main() { isNormal_b00ab1(); } [[stage(compute)]] fn compute_main() { isNormal_b00ab1(); } Failed to generate: error: is_normal not supported in HLSL backend yet