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AppGameKit Classic Chat / Why only 30 FPS?

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MikeHart
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Posted: 21st Dec 2016 19:18
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In a test game, I get around 100 FPS when VSync is off. When I turn it on, I get only 30 FPS.
My monitors refresh rate is 60 or 70 I think. So I should get 60 or 70, but not 30.
I know that OpenGL halfs the framerate when it can't reach the max refresh rate when you do a vsync.

Do you know why it would go down that bad?
Running Windows 7 Home, 64 bit, 8 GB ram, Athlon II X2 255, ATI Radeon HD 4200. Using AGK2 Tier 1.
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damothegreat
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Posted: 21st Dec 2016 21:54
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graphics card capabilities??
Using Tier 1 AppGameKit V2
Started coding with AMOS
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nz0
AGK Developer
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Posted: 21st Dec 2016 23:27
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Make sure you don't have an override set up in your graphics driver software. I left something set in my Nvidia control panel once and spent ages on a similar problem.

There's also the chance that your original 100 fps isn't calculated correctly.
Some monitors / drivers also refresh differently at different resolutions.

Finally, try deprecating some routines until the frame rate lifts / vsync works.
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damothegreat
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Posted: 21st Dec 2016 23:31
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I.E

In a main synch loop - calling a

CreateSprite
CloneSprite

or
too many embedded loops before the Sync() will siginificantly drop FPS

In your main loop, always try and make your code one frame at a time

Unsure how - we can teach you

Damo
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blink0k
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Posted: 21st Dec 2016 23:34
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maybe try setsyncrate()
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Kevin Picone
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Posted: 21st Dec 2016 23:39
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you might also have an extra sync hidden away in your main loop.

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damothegreat
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Posted: 22nd Dec 2016 00:21
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e.g

whats wrong with this



Try and fix it

Damo
Using Tier 1 AppGameKit V2
Started coding with AMOS
Anything is possible if put mind to it
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MikeHart
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Posted: 22nd Dec 2016 06:27 Edited at: 22nd Dec 2016 06:30
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I am talking about a bare bones project with no content at all.
The one that is created when you open a new project.

And I see this behaviour when I switch vsync on and off.

EDIT: I found the error. SetSyncRate is in there. Doooh.
Running Windows 7 Home, 64 bit, 8 GB ram, Athlon II X2 255, ATI Radeon HD 4200. Using AGK2 Tier 1.
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CumQuaT
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Posted: 22nd Dec 2016 13:19
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Occam's razor strikes again!
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