just for fun i used the watercress function to produce altitude on a procedural terrain and came across the following problem:

you see that the borders of the circles are not smooth but kind of pixelated. increasing the size of the terrain does not help. quality boost increase does not help. and why does this happen with procedural terrain anyway? i thought with beeing procedural it would calculate the smallest details.

the only thing i can think of thinking in 2D would be to (gaussian) blur the image so the borders are not so sharp. i tried the gaussian filter but that did not do anything i expected.

any hints or tips here?

thanks in advance
chris

what resolution was the terrain when you generated it ? try increasing it to 1024 or higher - that might cure it

The resolution in a procedural terrain has effect only on the opengl, it's irrelevant otherwise. So, that's not the solution (and not even necessary).

You have to increase the advanced effects setting in the render settings. Put it at 100% and render. You'll get very good lines.

man you guys are fast!

thanks! fixed :) but still i would be interested in a way to slant or soften the walls. is there a way to blur the edges of the terrain function image?

quality boost on terrain: +4
render settings: user defined with "final" loaded
advanced effects quality: 100% (but did not go into edit and change anything there)

terrain size is 1024x1024

Like I wrote above, do not increase the resolution of procedural terrains. That just wastes memory with no practical result.

What other render settings do you have? Can you post a screenshot?

terrain size is still at 1024x1024

function is

edit object/terrrain is

and render setttings are user settings where i loaded final and changed the advanced effects to 100%

Just remembered: what's your AA settings? Maybe that's too low.

Ah, final! Don't use that. In fact, don't use any preset render settings. They all suck, in one way or another. The AA of final is very low. Increase quality to at least 80% and min/max to at least 8/16. I never use any lower than this.

the default was optimized, 3-9 and 40% ... i upped it to systematic, 5-10 and 100% but that didnt really change anything for the "walls"

Like I wrote, 5-10 is too low. You saw my walls, they look better. My terrain resolution is 256 (the default). My AA settings were optimized, crisp, 8/16, 85%. Advanced effects at 100%.

i tried all kind of settings but it seems to me AA makes no difference at all. it went up to systematic, 16-32 and 100% but still looks the same to me.

are you sure AA is the right thing to tweak for this problem? i would have thought that it has more to do with applying the function values to the terrain object. like at what kind of resolution will it be applied? or something in that direction ...

or could the ple version but different in the way it handles this? i could try this in the office tomorrow maybe.

Maybe we're talking about different things. I thought you wanted to get rid of the jaggies that your walls have. Is this it? Or are you after something else?

yes :) one is the jaggies ... i would like to be able to have the same result like in your render above. (i also tried to raise the boost +4 in the terrain box but it seems +4 is the max)

and another thing i was asking is how to make the walls no that sharp (vertically). i would like to add some blurring in the function editor and dont know how to.

i think i have it!

the culprit was the filterunder neath the altitude production node thingie ... once i change that it went smooth ... but thanks for your patience artur (as usual i learnd a couple of new thing in addition)

so now if anyone has an idea how to apply the blurring of the watercress pattern i would be exstatic :)

Regarding the smoothing of the walls, I don't know. Hopefully, others more knowledgeable in the function editor will step in.

We cross posted and we arrived at the same conclusion at the same time. :-)

yup! thanks for all your help artur and good night for tonight :)

Good night!