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Thread: FPS drop by close look at Texture ???

  1. #1
    Senior Member Regular Contributor uwi2k2's Avatar
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    FPS drop by close look at Texture ???

    Hi all,

    i am encountering a strange problem in may game.
    Its about jumping from plate to plate...
    so if i stand o a plate looking at the rest of the world fps is fine:


    So if i now just move the mouse to look at the floor of the plate i am standing on, it drops dramaticly:


    of course here is no big change in the game logic happening.... its just looking down by mousemovement...

    if i do a high jump and look at the world from above rate is as well a bit smaller:


    can anyone help me or give me a hint what is happening here ?

    the textures a *.raw files 256x256 and are repeatet some times on the object.

    thanx a lot
    uwi2k2
    uwi2k2 - OpenGL Trainer: www.opengl-trainer.com
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  2. #2
    Member Contributor
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    Re: FPS drop by close look at Texture ???

    Overdraw? Might help if you draw the platforms first and then the pink-gray background box (what hardware is this on?).

  3. #3
    Super Moderator OpenGL Lord
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    Re: FPS drop by close look at Texture ???

    Do you use mipmaping ?
    Otherwise, when looking textured objects from far away will be very costly (cost is roughly equal to distance multiplied by number of visible pixels).

  4. #4
    Senior Member Regular Contributor uwi2k2's Avatar
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    Re: FPS drop by close look at Texture ???

    hi thanx for the answers.

    1. yess i use mipmaps
    2. its a Compaq 6710b laptop 4 years old. GPU supports opengl 1.8

    but i saw now that the framedropping somehow goes together with the screen resolution aspect ratio. in some ratios this does not happen ....

    any idea ?

    uwi
    uwi2k2 - OpenGL Trainer: www.opengl-trainer.com
    ---------------------------------------------------------
    The OpenGL and VULKAN Podcast ( OpenGL2GO ) : OpenGL & Vulkan Podcast
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