Mipmapping in OpenGL

I'm having a lot of trouble getting mipmaps to work. I'm using OpenGL 1.1, and I don't have glu, so I'm using the following texture initiation code: ``` glGenTextures(1,&texname); glBindTexture(GL_TEXTURE_2D,texname); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST_MIPMAP_NEAREST); w=width;h=height; for(int i=0;i<mipmaps;i++,w/=2,h/=2) glTexImage2D(GL_TEXTURE_2D,i,GL_RGBA8,w,h,0,GL_RGBA,GL_UNSIGNED_BYTE,tex[i]); ``` Variables: ``` // data types: unsigned long int *tex[20]; int mipmaps, width, height, w, h; GLuint texname; ``` `tex` is an array that holds the list of the texture mipmap pixel arrays. The mipmaps are processed correctly (I tested them individually). `mipmaps` is the number of mipmaps that reduce down the original image to a 1x1 pixel texture (the original texture is 256x256 - so at this point in the code it's 8). `width` and `height` are the dimensions of the original texture (256x256). The result is that it doesn't even use a texture. Everything just appears flat grays (gray due to the lighting). Is there something I'm forgetting? I've checked this reference, and I can't find any conflicts. Other details: In total, I'm enabling GL_DEPTH_TEST, GL_TEXTURE_2D, GL_LIGHTING, GL_CULL_FACE, GL_FOG (and GL_LIGHT0, GL_LIGHT1 which probably don't make a difference). Also, I am using Mesa 3D's implementation of OpenGL (Mesa version 4.0 which translates to OpenGL version 1.3) if that might have anything to do with it. EDIT: The issue is, the texture works fine (not using mipmaps) the moment I change GL_NEAREST_MIPMAP_NEAREST to GL_NEAREST. So, I can't see how it could be any other code - at least I can't think of anything else it might be.