Question

我正在用SFML / C ++ / Code :: blocks编写一个简单的游戏。我写了一个简单的“ dev-console”，它基本上以转角fps，位置，逻辑/图形循环数等打印出来。一切正常，直到我将其隐藏为止，然后fps从60（最大受阻）下降到大约15。为什么禁用写入功能会导致fps下降太多？（不应该禁用它来加快速度吗？）

声明：

tm = t.asMilliseconds();
    fps += 1000/tm;
    if (console == true)
    {
        consoletxt.setString("Last loop time: " + doubleToString(tm));
        consoletxt.setPosition(0,0);
        window.draw(consoletxt);
        consoletxt.setString("Fps: " + intToString(1000/tm) + " Average fps: " + intToString(fps/logicLoops));
        consoletxt.setPosition(0,15);
        window.draw(consoletxt);
        consoletxt.setString("objects[0].x: " + doubleToString(objects[0].x));
        consoletxt.setPosition(0,30);
        window.draw(consoletxt);
        consoletxt.setString("objects[0].y: " + doubleToString(objects[0].y));
        consoletxt.setPosition(0,45);
        window.draw(consoletxt);
        consoletxt.setString("Angle radians/degrees: " + doubleToString(cam_angle) + " | " + intToString((int)(cam_angle*180/pi)));
        consoletxt.setPosition(0,60);
        window.draw(consoletxt);
        consoletxt.setString("Logical Loops: " + doubleToString(logicLoops) + " Graphics loops: " + doubleToString(graphicsLoops) + " Difference: " + doubleToString(logicLoops - graphicsLoops - 1));
        consoletxt.setPosition(0,75);
        window.draw(consoletxt);
        consoletxt.setString("Variable test: " + doubleToString(cos(cam_angle*180/3.1415)));
        consoletxt.setPosition(0,585);
        //window.draw(consoletxt);
    }

以下代码：切换控制台= false时； fps从60降至15

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