FPSAnimator CPU Issues

OpenGL Development JOGL Development
#1

Hello all,

I am making an isometric game to familiarize myself with OpenGL, Java, and data structures. My game is using the FPSAnimator class, and I am drawing some tiles on the screen. When I set the FPS to 50 or below, the program uses between 3 and 10 percent of my CPU power, when I set it to 60 or above it takes 100% CPU. If I set the FPS higher than 60, 80 or 100 for example, the FPS is still 60 (checking in display method). I thought it might be something I did somewhere else in my program, so I tried it with the netbeans opengl pack demos and it does the same thing. Is this a common issue, or could it be my computer somehow? It is not really a problem, it just kinda bugs me because I don’t know why it’s doing this. ???

#2

Try to use only an Animator instead and activate the v-sync, you will get better and more predictible behavior.

#3

Also, if you are displaying on an LCD your fps is limited to the LCD settings…typically 60

#4

very interresting threat and hello to all,

i work with jogl since about april 08 and i also fall over the
strange problem with the framerates and the CPU issues.

My application runs on Mobile Pentium (1,6ghz and shared ATI Graphics) with framerate 20-32
(FPSAnimator set to 60) , on an PC Athlon X2 (2x 2,0Ghz gamer pc) the same .
But both get the Problem of the 100% CPU … after changing the FPSAnimator down to
30 the CPU usages sinks to a normal level(max 15% CPU).

i Work with Netbeans (6.1 and now with 6.5) and there i got the problem that after 5-8minutes
of using my program when i do nothing (no mousemove or something)
the complete hardware freezes for minutes.

did anybody have some help or ideas?

#5

Which ATI graphics card do you have? ATI Xpress 200M? Something like this? Do you have the latest driver for it? I had this bug when I tried to fix some problems in the TextRenderer class, everything got frozen after a minute. As I said, try to use only an instance of the class Animator and activate the v-sync and tell me if it solves your problem. Do you use vertex arrays and/or VBO?

#6

Its the same on PC’S with:

ATI Xpress 200M , Notebook XP
Geforce GO 7300 , Notebook XP
Geforce 8000er series ,PC Vista

(all with latest drivers)

Yes i use vertex arrays and FramebufferObjects.
i do not use any shaders

i will change the fpsanimator to animator later and tell you

much thx