SKIP: FAILED fn modf_a54eca() { var arg_1 : vec2; var res : vec2 = modf(vec2(), &(arg_1)); } struct tint_symbol { [[builtin(position)]] value : vec4; }; [[stage(vertex)]] fn vertex_main() -> tint_symbol { modf_a54eca(); let tint_symbol_1 : tint_symbol = tint_symbol(vec4()); return tint_symbol_1; } [[stage(fragment)]] fn fragment_main() { modf_a54eca(); } [[stage(compute)]] fn compute_main() { modf_a54eca(); } Failed to generate: error: Unknown import method: modf