婺源网站建设,免费推广app工作好做吗,物业管理系统er图,四川省建设学习网环境#xff1a; cocos creator 2.4.3 华为meta 50
背景#xff1a; 小游戏 需要在update 里取帧率 发现跟时间对不上 游戏设置60帧 手机上显示 90帧 cc.game.setFrameRate(30) 显示 30帧 cc.game.setFrameRate(60) 显示 90帧
结论#xff1a; 对于老版本的cocos creator …环境 cocos creator 2.4.3 华为meta 50
背景 小游戏 需要在update 里取帧率 发现跟时间对不上 游戏设置60帧 手机上显示 90帧 cc.game.setFrameRate(30) 显示 30帧 cc.game.setFrameRate(60) 显示 90帧
结论 对于老版本的cocos creator 如果有依赖帧率的逻辑 需要自行注意逻辑正确性 cc.game.getFrameRate() 取出来的帧率 有可能 并不是当前真实帧率 只是逻辑帧率
源码分析 cocos2dxRenderer.java Overridepublic void onDrawFrame(final GL10 gl) {if (mNeedToPause)return;if (mNeedShowFPS) {///IDEA: show FPS in Android Text control rather than outputing log.mFrameCount;long nowFpsTime System.nanoTime();long fpsTimeInterval nowFpsTime - mOldNanoTime;if (fpsTimeInterval 1000000000L) {double frameRate 1000000000.0 * mFrameCount / fpsTimeInterval;Cocos2dxHelper.OnGameInfoUpdatedListener listener Cocos2dxHelper.getOnGameInfoUpdatedListener();if (listener ! null) {listener.onFPSUpdated((float) frameRate);}mFrameCount 0;mOldNanoTime System.nanoTime();}/}/** No need to use algorithm in default(60 FPS) situation,* since onDrawFrame() was called by system 60 times per second by default.*/if (sAnimationInterval INTERVAL_60_FPS) {Cocos2dxRenderer.nativeRender();} else {final long now System.nanoTime();final long interval now - this.mLastTickInNanoSeconds;if (interval Cocos2dxRenderer.sAnimationInterval) {try {Thread.sleep((Cocos2dxRenderer.sAnimationInterval - interval) / Cocos2dxRenderer.NANOSECONDSPERMICROSECOND);} catch (final Exception e) {}}/** Render time MUST be counted in, or the FPS will slower than appointed.*/this.mLastTickInNanoSeconds System.nanoTime();Cocos2dxRenderer.nativeRender();}}分析上述代码
if (sAnimationInterval INTERVAL_60_FPS) {Cocos2dxRenderer.nativeRender();
}说明 60帧的设置 。没有处理刷新帧率 走的系统是高刷 所以会导致 dt 并不是 60帧的dt
