Frame rates

This is a discussion on Frame rates within the Windows Programming forums, part of the Platform Specific Boards category; With all this talk of OGL and DirectX, does anyone happen to know how fast Windows updates its own display?...

  1. #1
    Registered User johnnie2's Avatar
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    Frame rates

    With all this talk of OGL and DirectX, does anyone happen to know how fast Windows updates its own display?
    "Optimal decisions, once made, do not need to be changed." - Robert Sedgewick, Algorithms in C

  2. #2
    Former Member
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    well, no. Do you?

    I guess that at the same refresh rate of the screen!

    Oskilian

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    Doubtful that it's at the refresh rate -- it obviously can't be MORE than the refresh rate (or if it is, it's a waste of processor power!)

    But I doubt it necessarily updates every refresh.

  4. #4
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    well, maybe it refreshes 29.97 (NTSC), or 25 (PAL) times.

    but considering windows' speed, it wouldn't surprise me that it refreshes at the screen's refresh rate.

    Oskilian

  5. #5
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    Well, one thing to remember is that the screen NEVER refreshes unless some part of the screen has changed. The only "frame rate" is the minimum length of time between when two consecutive changes can take effect.

    The frame rate may well depend, and in fact almost certainly does, on how much of the screen changes. To redraw a tiny rectangle every frame as someone moves the mouse is fast, wheras to redraw the whole screen may take a little longer, so the rate at which it can redraw the whole screen is slower.

  6. #6
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    OK, I didn't knew that, thanks

    Oskilian

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