SKIP: FAILED fn select_266aff() { var res : vec2 = select(vec2(), vec2(), vec2()); } [[stage(vertex)]] fn vertex_main() { select_266aff(); } [[stage(fragment)]] fn fragment_main() { select_266aff(); } [[stage(compute)]] fn compute_main() { select_266aff(); } Failed to generate: error: select not supported in HLSL backend yet