   Texture Map + Black Wireframe = OH NOES!
  I'm having a problem with texture mapping. I have a wireframe object made of GL_LINES and a GL_QUAD that's either textured or not. When the quad is textured, *everything* else turns into black lines and I haven't changed the color using glColor3f(0.0, 0.0, 0.0) anywhere. Does anybody know how I can apply a texture to a quad and still maintain the other colors?Thanks in advance,Michael   
  UPDATEI figured out what was wrong but I still don't know why this problem crops up. Originally I was using a file for the texture, and when I tried another one it worked fine. Are there any "gotchas" concerning what kind of file to use? I'm using bitmaps for both, and I believe they're both 24-bit.   ;  Do you disable texturing when you don't need it?  If not and you don't change the texture coordinates then each vertex of your wireframe object will use the last texture coordinate.  If that happens to correspond to a texel that is black, then your lines will be black.   ;  Awesome, that worked. Thanks a bunch!   