title: perspective correction, texture interpolation opengl
body: <p>1)  In opengl, in texture mapping, when you specify texture coordinates for two different vertices,for a point in between are texture coordinates interpolated, or/and are the rgb values at the specified texture coordinates interpolated?</p>
  
  <p>2) Also, could someone post/link to a full example (with actual coordinates) of texture coordinate interpolation with perspective correction- with world vertices associated with texture coordinates, transformed to clip coordinates, and then interpolated to find other texture coordinates? </p>