   ppm: . 
           .

    :

1.     .
2.  --         .
 --   .
    1-3    "dd"        3-4 .
.    80.
    :
--          "add"  "value"   .

       .

[IMG]
wooden_text.png

[URL]
  
http://crazy-painter.ru/files/forum/attach/wood_texture.png