Jagged planet edge

[nem]

Hi All,

I have tried a simple rendering of a planet from a distance, but I get a "low res" jagged edge at the boundary between the planet and space (see attachment). I tried increasing the anti-aliasing, the quality (both on the rendering windows and on the atmosphere settings) and played around with other parameters, but none seems to improve the result.
In any case, I guess it is a quite basic issue, so I'm sure the Terragen experienced of you will most probably recognize immediately what is the problem.

(I tried to search if there was already some similar post, but using the keywords I had in mind I could not find anything. So please pardon if that was an already discussed issue).

Thanks a lot in advance! 

Nem

[chrisS@422]

Hi Nem,

I think the problem may lie in the displacement scale, what settings are you using on the power fractal? maybe a smaller 'Smallest Scale' and a larger 'Lead-in' scale could do the trick.
Alternatively you could create another fractal with smaller displacement on top of the existing ridge's you have.

hope this helps
cheers

C

edit: just read the post properly, Ignore my comment, I need glasses I think...

[RArcher]

Is this image the final saved render, or is it a screen capture of the render window?  If it is just a screencapture the jagged edge should not be there when you open it in photoshop or whatever image editing software you use.

http://forums.planetside.co.uk/index.php?topic=3879.msg40336#msg40336

[cyphyr]

Just an outside guess but is that a screen cap of the rendered output? Sometimes the rendered output is displayed at 80% or 97% or something similar. Under these circumstances the render is fine, just open it up in photoshop or similar and you'll see. Its only the displayed render that suffers. If you did not save the render take a look in your terragen temp folder, it will have been saved there anyway.

Richard

Ryan got there first

[nem]

Just an outside guess but is that a screen cap of the rendered output? Sometimes the rendered output is displayed at 80% or 97% or something similar. Under these circumstances the render is fine, just open it up in photoshop or similar and you'll see. Its only the displayed render that suffers. If you did not save the render take a look in your terragen temp folder, it will have been saved there anyway.

Richard

Ryan got there first

Thanks to all of you for your prompt answers! It seems the keyword I missed to use during the forum search was "blocky" ;-) So, yes, it is a screen capture.
What alerted me was the fact that I got this jagged edge even at 100% zoom, which I considered 1:1 comparable with the original. For that reason I didn't even saved. Now I see that the saved version has not this problem.
Thanks again!
Nem

[freelancah]

If you go to File->explore temporary files, you should be able to find your render there. Even if you did not save manually it automatically saves there, unless you changed the default folder