SKIP: FAILED fn modf_4fe3d9() { var arg_1 : vec3; var res : vec3 = modf(vec3(), &(arg_1)); } struct tint_symbol { [[builtin(position)]] value : vec4; }; [[stage(vertex)]] fn vertex_main() -> tint_symbol { modf_4fe3d9(); let tint_symbol_1 : tint_symbol = tint_symbol(vec4()); return tint_symbol_1; } [[stage(fragment)]] fn fragment_main() { modf_4fe3d9(); } [[stage(compute)]] fn compute_main() { modf_4fe3d9(); } Failed to generate: error: Unknown import method: modf