title: .obj files in Opengl with Textures
body: <p>so I am trying to load a .obj file into a C program using the OpenGL graphics library.  Everything works fine, until I add textures.  Then the image renders in all black and it is barely visible, and only because there is a white axis in the center of the window that is blocked by the object.  </p>
  
  <p>I've narrowed it down and I think it has to do with the .mtl file.  If I delete it, the object at least renders in white, normals for lighting, and everything work fine.  There are just no textures.  </p>
  
  <p>I have been told to meddle with the .mtl file, double check lighting numbers and such, but I really don't know how to do that or know what reasonable numbers look like.</p>
  
  <p>What exactly is the problem/how do I fix it?<br>
  Thanks!</p>