utDataAssign

float[] buf = [ 1.1, 2.2, 3.3, 4.4, 5.5, 6.6 ];

utDataAssign( ElemInfo( DataType.FLOAT, 3 ), cast(void*)buf.ptr, vec3(8,9,10) );

assert( eq( buf, [8,9,10,4.4,5.5,6.6] ) );