How to create custom made Procedural Textures ?

Any link please ?

http://www.infinity-universe.com/Infinity/index.php?option=com_content&task=blogcategory&id=22&Itemid=49

http://http.developer.nvidia.com/GPUGems/gpugems_ch05.html

and finally, http://google.com

No need to look beyond this forum. Sounds like you need OSL.
http://blenderartists.org/forum/forumdisplay.php?55-OSL-Tests-and-Support