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DarkBASIC Professional Discussion / DBP Platform Timer = 1ms, can this be changed?

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BatVink
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Posted: 21st Jun 2011 18:23
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I have been running some tests, trying to make my game more energy efficient for netbooks. The big stumbling block seems to be the takeover of the Platform Timer.

By default it is set to 15.6 by Windows. Some apps set it to 10 (e.g Chrome). I need to unset this if possible during idle times (Menu screen).

I've tried IanM's NICE SLEEP, and although this gives time back to the OS, it doesn't change the Platform Timer.

Can this be achieved? Even if by a DLL call, if all else fails?

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IanM
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Posted: 21st Jun 2011 19:03
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Take a look at SET TIMER RESOLUTION.

Get the latest Matrix1Utility plug-ins (20-APR-2011)
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Booma
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Posted: 21st Jun 2011 20:20 Edited at: 21st Jun 2011 20:49
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You can use this functions from ntdll.dll

NtSetTimerResolution http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/Time/NtSetTimerResolution.html
NtQueryTimerResolution http://undocumented.ntinternals.net/UserMode/Undocumented%20Functions/Time/NtQueryTimerResolution.html

or functions from Winmm.dll

timeGetDevCaps() to get resolution
timeBeginPeriod() to set resolution

P.S.

IanM in his plugin use timeGetDevCaps() timeBeginPeriod() and TimeEndPeriod()
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BatVink
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Posted: 22nd Jun 2011 01:57
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I will try the SET TIMER RESOLUTION at the next opportunity, thanks Ian.

Booma, I will bear your information in mind as a backup, thanks.

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WLGfx
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Posted: 22nd Jun 2011 03:18
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Sorry but Hmmm noted... Very handy to know... (thinking about interrupt timers)

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