news:web.41e42180830ae0179011d8b10@news.povray.org...
> ok, not sure what to put for subject... it's just our home planet... I
think
> I'm getting closer to the final that I want....
>
> btw... I found a whole sleu of science fiction planets, and all of their
> cloud maps are JPEG, and it seems like a lot of work to convert them to
> PNG, invent their alpha clouds and merge them into the cloud image.  Does
> anyone know a work-around that I may use the original JPEG clouds, having
> transparency in the cloudless parts to see the land surface, without
having
> to convert them?
>
Nice!!
 to use jpg clouds with transparency, you could try with image_pattern (code
not tested, I'm running a 10 days render)

   pigment
   {
      image_pattern
      {
            jpeg   "your_image.jpg"
      }
      pigment_map
      {
         [0.0               color rgbt 1  ]
         [1.0               color rgb 1         ]
      }
   }



HTH

regards

Marc

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