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Type: Posts; User: Blakeasd

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  1. Replies
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    It's starting to make more sense. I understand...

    It's starting to make more sense. I understand the concept (I think) , but in terms of application I don't understand how I would implement it. I still don't see how the window's new coordinates...
  2. Replies
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    1,241

    If I subtract (1,1) from everything I draw, what...

    If I subtract (1,1) from everything I draw, what if I had something at (-1, -1)? Then wouldn't this become (-2, -2)? I though that the coordinate system ranges from -1 to 1 so that something at (-2,...
  3. Replies
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    1,241

    I am trying to make a very simple side-scrolling...

    I am trying to make a very simple side-scrolling game; I want to fill the background with a textured shape. The rectangle is made and the texture is applied, but my problem is with positioning. When...
  4. Replies
    6
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    1,241

    Make Square Fill Entire Window

    Hello,

    How do I determine what transforms I need to make a square fill an entire window in modern OpenGL? Say for example I have an 800 x 600 window and the coordinates with the vertices of two...
  5. I see.. that makes sense. Thanks for your...

    I see.. that makes sense. Thanks for your assistance!
  6. Thanks for the link, that's one that I haven't...

    Thanks for the link, that's one that I haven't seen before. Even after reading through it, I still don't understand the purpose of the Vertex Array Object. If all that needs to be done is generate a...
  7. glDrawElementArrays and Vertex Array Objects

    Hello. (This question pertains to the OpenGL 3.2 Core Context.)


    I am having some confusion about how Vertex Array Objects work with glDrawElements. The OpenGL docs say that the indices are...
  8. Replies
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    1,993

    This worked, I must have made a mistake while...

    This worked, I must have made a mistake while following the tutorial. Thanks!
  9. Replies
    6
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    1,993

    I just now got OpenGL profiler downloaded and...

    I just now got OpenGL profiler downloaded and here is the detail on my invalid enum:



    glGetString(GL_EXTENSIONS); returns: 0x00000000
    Error: GL_INVALID_ENUM
    Context: 0x7f981c828800...
  10. Replies
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    1,993

    Ok, I'm not using the APPLE() calls anymore. I am...

    Ok, I'm not using the APPLE() calls anymore. I am getting OpenGL Error 1280 when I put this code above glGenVertexArrays():




    GLenum err;
    while ((err = glGetError()) != GL_NO_ERROR)...
  11. Replies
    6
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    1,993

    Black Screen -- Should Be a trianlge

    Hello,

    I am using OpenGL 3.2, OS X 10.8, and Xcode 4.6. I am using glfw for my window management. I am trying to draw a simple triangle using this tutorial:
    open.gl

    However, I don't get a...
  12. It worked! Thanks so much for the help GClements...

    It worked! Thanks so much for the help GClements and Alfonse! I obtained the length of the C string (not the pointer this time) like this:
    GLint arraySize = (GLint)size;

    and passed it in as a...
  13. I've checked to see if my C string is my file......

    I've checked to see if my C string is my file... and it is. What I mean as Objective-C being my language is that I've been programming with Objective-C for years, while I've only been using C++...
  14. There's still something wrong with my code, but I...

    There's still something wrong with my code, but I don't see anything wrong. I am compiling a fragment shader underneath the vertex shader. Sometimes the vertex shader doesn't compile, sometimes the...
  15. Thanks for the reply, but now I have a different...

    Thanks for the reply, but now I have a different problem. Sometimes the shader will compile, but other times it won't compile and I'll get seemingly random shader compilation errors.

    Here my new...
  16. Thanks for the response. Here is my code to load...

    Thanks for the response. Here is my code to load and compile the shaders:



    std::ifstream vertexShaderFile;
    std::string tempString;
    std::string vertexShaderString;

    ...
  17. Shader Compile Error: ERROR: 0:1: '' : syntax error #version

    Hello,

    I am trying to compile a very simple vertex shader and I got this error, however I don't see anything wrong in my vertex shader. This is the error that I get:


    ERROR: 0:1: '' : syntax...
  18. Replies
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    1,548

    Thanks! Though my context was set up correctly,...

    Thanks! Though my context was set up correctly, you led me to think something context-wise was wrong; you were right. Apparently on OS X any OpenGL calls pertaining to setting up OpenGL must go in...
  19. Replies
    2
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    1,548

    glGenBuffers returns 0

    Hello,

    I am working on OS X Mountain Lion and Xcode 4.6. I am using the Cocoa APIs to create my windows and handle events. I can't seem to get a vertex buffer generated for some reason. I use...
  20. I fixed the curly brace mismatch, but it still...

    I fixed the curly brace mismatch, but it still doesn't have a complete rotation. It rotates to the left, very slightly, and stops. Any Ideas?
  21. OpenGL Programming Guide (7th Edition) Example Not Working

    Hello,

    I am following the OpenGL Programming Guide (7th Edition) and I can't get an example to work. In the example a square should rotate after a left mouse button click. I did not copy in...
  22. Replies
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    1,686

    Re: GLUT Window Starts out Minimized

    Thanks! It's fixed.
  23. Replies
    2
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    1,686

    GLUT Window Starts out Minimized

    Whenever I run my GLUT OpenGL program the window starts off minimized in the dock. How can I stop this from happening? Thanks!
    Here is my code:


    #include <iostream>
    #include <OpenGL/OpenGL.h>...
  24. Replies
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    2,555

    Re: Drawing Lines in OpenGL (Mac OS X)

    It works now, thanks everyone!
  25. Replies
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    2,555

    Re: Drawing Lines in OpenGL (Mac OS X)

    I added it right after

    glViewport(0, 0, rectView.size.width, rectView.size.height);

    in the reshape method, but the lines still don't appear.
    Any Ideas?
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