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Thread: glTexSubImage2D

  1. #1
    Junior Member Newbie
    Join Date
    May 2001
    Posts
    14

    glTexSubImage2D

    I'm not to familiar w/ this function.
    I was wondering if anyone could give me a hand.
    Im using the TK libs. here is sudo code for what i have so far. i want to take one of
    these textures and cut it up and store it as
    smaller textures.

    TK_RGBImageRec *images[2];
    images[0] = tkRGBImageLoad("BIGMAP.sgi"); glPixelStorei();
    glTexImage2D();
    glGenTextures(2, &texture[0]);glBindTexture(GL_TEXTURE_2D, texture[x]);
    glTexImage2D();
    glTexParameteri();
    Then when i go to bind the texture i just use:
    glBindTexture(GL_TEXTURE_2D, TMap[0]);
    before i start drawing.

    The problem is my computer doens't like to
    do loadimages more than 8 times or so.
    So breaking up lareger images into smaller
    textures would be ideal.

  2. #2
    Member Contributor
    Join Date
    May 2001
    Location
    Cheltenham,Gloucestershire,England
    Posts
    59

    Re: glTexSubImage2D

    Hello there,

    glTexSubImage2d(..) is used to modify
    a given rectangle of texels in the currently
    bound texture.

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