Max Frame Rate 64 FPS

Troubleshooting General Help
1

Hello there,

with a very simple scene i can't get higher frame rates than 64. Im using StandardGame and setting the frame rate like this:



standardGame.getSettings().setFramerate(getFrameRate());

standardGame.getSettings().setHeight(getWindowHeight());

standardGame.getSettings().setWidth(getWindowWidth());

standardGame.start();



Some time ago I had frame rates (on the same machine) of about 400 with a comparable scene. Does anybody know if the preferred way to control the frame rate has changed recently? Or what would be the best starting point for finding a problem like this? (I even have exactly 64 fps in an empty scene!).



I removed all game states except for DebugGameState and still only have 64 FPS.



Any idea would be great,

marcus

2

Standard game has control over what is the desired framerate… And you are setting it with standardGame.getSettings().setFramerate(getFrameRate()); So the question would be, what happens if you instead do something like:


standardGame.getSettings().setFramerate(400);

3

My guess: vsync is on :slight_smile:

4

Yes, VSync is enabled by default in StandardGame. :slight_smile:



You can disable it by:


game.getSettings().setVSync(false);



...or something like that.

Make sure to do it before you start() StandardGame.
5

OK, I have now set:



// in constructor:

private final GameStateManager gameStateManager = GameStateManager.create();



// to start game:

standardGame.getSettings().setFramerate(200);//getFrameRate());

standardGame.getSettings().setHeight(getWindowHeight());

standardGame.getSettings().setWidth(getWindowWidth());

standardGame.getSettings().setVerticalSync(false);

       

standardGame.start();



// then:

simpleSetupState =  new DebugGameState();

gameStateManager.attachChild(simpleSetupState);

simpleSetupState.setActive(true);



All other states removed. Still only ~60 FPS

Debug game state says: Nothing to display (or so). But frame rate is still as before.


6

Unfortnatly using VSYNC with OpenGL on Ati cards is still evil (at least as long as jME does not hack around this)



eg. http://www.gamedev.net/community/forums/topic.asp?topic_id=445562&whichpage=1&#2950139

7

On that video chipset - yeah it might influence it that much.  I would not expect too much from that setup.

8

You are right duenuz, but 60 FPS is definitely to slow for rendering nothing - even on the intel chip…

By the way:  :frowning:

Now the frame rate has dropped again to about 60. Looks like this happens kind of randomly…

I checked that standardGame.getSettings.getVerticalSync() returns false.



Any other ideas? Some tests have frame rates of 600 FPS and more !