SKIP: FAILED fn modf_d1d6f6() { var arg_1 : vec4; var res : vec4 = modf(vec4(), &(arg_1)); } struct tint_symbol { [[builtin(position)]] value : vec4; }; [[stage(vertex)]] fn vertex_main() -> tint_symbol { modf_d1d6f6(); let tint_symbol_1 : tint_symbol = tint_symbol(vec4()); return tint_symbol_1; } [[stage(fragment)]] fn fragment_main() { modf_d1d6f6(); } [[stage(compute), workgroup_size(1)]] fn compute_main() { modf_d1d6f6(); } Failed to generate: error: Unknown import method: modf