Cracked Mud

[nvseal]

Another canyon render. I think I may try to redo this one with a better sun angle (its kind of hard to get sun done there ).

[child@play]

sweet, great job

[rcallicotte]

Pretty decent.  To be picky, you might need some randomness to the cracks...as far as big and small chunks of dried mud.  I'm only being picky, since it's obvious this is very very good work.  If you can make the chunks of mud more random, then it would look utterly real.

[Tangled-Universe]

Neat image, like the overhangs and tunnel-like appearance
The cracks look very nice, but I do agree with Calico a little.
Good lighting too.

Martin

[Seth]

nice. i like the great distance view.

[PG]

Pretty decent.  To be picky, you might need some randomness to the cracks...as far as big and small chunks of dried mud.  I'm only being picky, since it's obvious this is very very good work.  If you can make the chunks of mud more random, then it would look utterly real.

Yeah I agree there, maybe a second texture that's just a little darker to blend in with this one, this is the voronoi technique right? As far as the variation goes, you could do another voronoi function and blend it with the current one using merge shader.

Edit: oh yeah and a fractal breakup to add some variety to the distribution of variety, if you see what I mean.

[Will]

Great job, I really like the mud.

[Mr_Lamppost]

Remember that you can feed a function or a manipulated power fractal into the scale input of the Voronoi, which could add variety to the size of the chunks while keeping the system of cracks continuous.

Nice displacements, the broken tunnel is excellent.  I am not sure about the mist/haze; shouldn't it be showing beams where the sun is shining through the holes in the roof rather than an even glow?

[nvseal]

Remember that you can feed a function or a manipulated power fractal into the scale input of the Voronoi, which could add variety to the size of the chunks while keeping the system of cracks continuous.

Nice displacements, the broken tunnel is excellent.  I am not sure about the mist/haze; shouldn't it be showing beams where the sun is shining through the holes in the roof rather than an even glow?

Hehe, I tried to get some nice beams yesterday. I actually made some that looked pretty good (in my opinion) but it only works with raytracing -- and I just couldn't stomach the idea of raytracing at the time.  I'm working on some variety right now. I hadn't thought of that though so thanks. I'll go try that.

[PG]

Remember that you can feed a function or a manipulated power fractal into the scale input of the Voronoi, which could add variety to the size of the chunks while keeping the system of cracks continuous.

Functions are really difficult, the tutorials aren't the best at explaining how they can be used. Any chance you could explain some? Obviously in another topic, not here.

[Mr_Lamppost]

Hehe, I tried to get some nice beams yesterday. I actually made some that looked pretty good (in my opinion) but it only works with raytracing -- and I just couldn't stomach the idea of raytracing at the time.  I'm working on some variety right now. I hadn't thought of that though so thanks. I'll go try that.

Go on you know you want to. 

A high quality version of that would be well worth the time.

Functions are really difficult, the tutorials aren't the best at explaining how they can be used. Any chance you could explain some? Obviously in another topic, not here.

I used to think of them as those "Scary blue boxes"; now if you look around you will see that I throw functions at almost everything.

There is a set of four tutorials by David Burnett that got me started:

http://forums.planetside.co.uk/index.php?topic=1166

http://forums.planetside.co.uk/index.php?topic=1167

http://forums.planetside.co.uk/index.php?topic=1168

http://forums.planetside.co.uk/index.php?topic=1169

[Mr_Lamppost]

Oooops! 

Nvseal: Forget the idea of introducing variation by manipulating the scale of the Voronoi.  It works close to the origin but becomes highly distorted mush quite quickly as you move away.

[nvseal]

Version two. I don't really like that variety in the mud yet (mainly because there isn' really very much).

[rcallicotte]

Much better!!  Keep working on this.  It's an excellent image and almost (with some more nvseal tuning) ultimately real looking.

[Cyber-Angel]

Can one of you please enlighten me as to the use of Voronoi noise, when I add a Voronoi node to my network nothing shows up what else do I need to add to make the cells show up?

Regards to you.

Cyber-Angel