problem calculating time

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markcw

hi, i tested this out and it looks like some commands, i think the ones related to drawing, eat up a few milliseconds, in particular i found flip was the most noticable, also cls with text occasionally caused a small timing error.

Maybe if you give the timer job to a dll it would allow you to have this accuracy. Here is the code i used.

Open in online IDE

Graphics3D 640,480,0,2

iniTime=MilliSecs()

While Not KeyHit(1)

 tempTime=MilliSecs()-iniTime
 If MilliSecs()>=iniTime+1000 ;1 second test
  If once=0
   once=1
   Latency#=(MilliSecs()-iniTime)/1000.0
   testTime=MilliSecs()-iniTime
   testFloat#=1000/1000.0
  EndIf
 EndIf

 ;If once=1
  Cls
  Text 0,0,"Latency="+Latency+" testFloat="+testFloat
  Text 0,12,"testTime="+testTime+" iniTime="+iniTime+" tempTime="+tempTime
 ;EndIf

 If once=1 Then Flip

Wend