Zack
Edited by - zeotron on 8/10/00 1:31:53 AM
Edited by - zeotron on 8/10/00 1:32:35 AM
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Frames Per Second
Author
I was wondering how I can measure frames per second. I have some code to get time and I was wondering how I can use it to measure FPS.
Note: GetTickCount ( ); returns number of milliseconds since computer was started
Here is the code:
// Initializes Tick1, Tick2, and DTick
Tick1 = GetTickCount ( );
Tick2 = GetTickCount ( );
DTick = (float)((Tick2 - Tick1) / 30.0);
In the main loop of my program I have:
// Update time
Tick1 = Tick2;
Tick2 = GetTickCount ( );
DTick = (float)((Tick2 - Tick1) / 30.0);
Any help would be greatly appreciated.
Zack
Edited by - zeotron on 8/10/00 1:31:53 AM
Edited by - zeotron on 8/10/00 1:32:35 AM
Zack
Edited by - zeotron on 8/10/00 1:31:53 AM
Edited by - zeotron on 8/10/00 1:32:35 AM
This is what you do: Save the Tick count before the update and after. Then take their difference and devide it into 1000.
For EX:
This code will give you the actuall FPS currentaly and not the average FPS that saving the frame count and total time elapsed would give you.
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"My sword is like a menacing cloud, but instead of rain, blood will pour in its path." - Sehabeddin, Turkish Military Commander 1438.
For EX:
TicksAtBeginning = GetTickCount();// update the game and draw the new frame...TicksAtEnd = GetTickCount();FPS = 1000 / (TicksAtEnd - TicksAtBeginning); This code will give you the actuall FPS currentaly and not the average FPS that saving the frame count and total time elapsed would give you.
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"My sword is like a menacing cloud, but instead of rain, blood will pour in its path." - Sehabeddin, Turkish Military Commander 1438.
Whats the advantage/difference (if any) of using GetTickCount over timeGetTime() ??
- Keith (new to OpenGL programming)
- Keith (new to OpenGL programming)
Of course you would want to use a bit shift instead of division
Dont want the FPS counter to hurt performance now do we?
Dont want the FPS counter to hurt performance now do we?
Read the boards and this is what I came up with.
queryperformancecounter (if spelled right)
- Fastest and most accurate
TimeGetTime
- Second fastest and accurate
GetTickCount
- not so fast and not so accurate but it works without including the winmm library.
- Keith
queryperformancecounter (if spelled right)
- Fastest and most accurate
TimeGetTime
- Second fastest and accurate
GetTickCount
- not so fast and not so accurate but it works without including the winmm library.
- Keith
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