SKIP: FAILED enable chromium_experimental_dp4a; fn dot4I8Packed_881e62() { var arg_0 = 1u; var arg_1 = 1u; var res : i32 = dot4I8Packed(arg_0, arg_1); } @vertex fn vertex_main() -> @builtin(position) vec4 { dot4I8Packed_881e62(); return vec4(); } @fragment fn fragment_main() { dot4I8Packed_881e62(); } @compute @workgroup_size(1) fn compute_main() { dot4I8Packed_881e62(); } Failed to generate: builtins/gen/var/dot4I8Packed/881e62.wgsl:24:8 error: MSL backend does not support extension 'chromium_experimental_dp4a' enable chromium_experimental_dp4a; ^^^^^^^^^^^^^^^^^^^^^^^^^^