//  A matte image texture
//  Requires
//    tx_file_name (a .ppm file name)
//    tx_quick_color
//  Defines
//    tx_texture

#declare tx_texture = 
  texture{
    pigment{
      image_map{ ppm tx_file_name  }
      quick_color rgb tx_quick_color
    }
    finish{ 
      ambient 0.0 
      diffuse 1.0
    }
  }