unable to unroll loop 报错

unable to unroll loop, loop does not appear to terminate in a timely manner (1024 iterations)

原本代码

for (int i = 0; i < _Loops; i++)

这里的_Loops是运行时,有程序传入的参数,在编译时报错

改写为字面值的最大值

for (int i = 0; i < 50; i++)

{

    ... ...

    if (i >= _Loops)

        break;

}

这个报错是 DirectX shader compiler 报的错