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Thread: Drawing bitmaps

  1. #1
    Guest

    Drawing bitmaps

    The following code should draw a bitmap of a letter 'A' but it does not work. What is wrong with this code?

    GLubyte A[1][13] = { {0x00, 0x00, 0xc3, 0xc3, 0xc3, 0xc3, 0xff, 0xc3, 0xc3, 0xc3, 0x66, 0x3c, 0x18}};

    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

    glClearColor(0, 0, 0, 0);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glRasterPos2i(20, 60);
    glColor3f(1, 1, 1);
    glBitmap(8, 13, 0.0, 0.0, 0.0, 0.0, A[0]);

  2. #2
    Senior Member OpenGL Pro
    Join Date
    Oct 2000
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    Fargo, ND
    Posts
    1,753

    Re: Drawing bitmaps

    Not knowing what your projection matrix is like, I'd have to guess that you are setting the raster position outside of the window. The raster position is not based on window coordinates but on the coordinates of the scene.
    Deiussum
    Software Engineer and OpenGL enthusiast

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