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General => Image Sharing => Topic started by: luc BIANCO on December 30, 2021, 03:22:26 AM

Title: canyon trip
Post by: luc BIANCO on December 30, 2021, 03:22:26 AM
Hi

An image a bit particular in its conception, since the canyon is calculated as spherical in Terragen (image of 10000x5000 pixels) then exported in Blender in which I added the tie interceptor and the global post processing


Title: Re: canyon trip
Post by: Hannes on December 30, 2021, 03:33:39 AM
Cool! Very informative!
Title: Re: canyon trip
Post by: Dune on December 30, 2021, 03:46:30 AM
Nice breakdown, and a cool canyon. At front right I believe to see an area that is folded inside out. That's often the problem with lateral displacements and warps.
Title: Re: canyon trip
Post by: luc BIANCO on December 30, 2021, 04:31:29 AM
You are right, with a path tracer rendering you can see the details inside this folding.
Title: Re: canyon trip
Post by: Dune on December 30, 2021, 07:35:57 AM
This doesn't seem very worrysome, but some folds don't render well, and get very dark.
Title: Re: canyon trip
Post by: luc BIANCO on December 30, 2021, 08:42:29 AM
Quote from: Dune on December 30, 2021, 07:35:57 AMThis doesn't seem very worrysome, but some folds don't render well, and get very dark.
I've had this type of problem before, especially with the path tracer, and I solved it by switching everything to raytracing (Raytrace Everything checkbox) and increasing the Ray Detail Multiplier level from 0.25 to 1
Title: Re: canyon trip
Post by: Dune on December 30, 2021, 12:16:21 PM
Good to know, thanks Luc!
Title: Re: canyon trip
Post by: aknight0 on December 30, 2021, 12:42:15 PM
Very nice, thanks for sharing!  

What do you use for the pass with the small holes?  I always have trouble getting small sparse holes without making the edges too hard, but yours look very natural.
Title: Re: canyon trip
Post by: luc BIANCO on December 30, 2021, 01:42:33 PM
Quote from: aknight0 on December 30, 2021, 12:42:15 PMVery nice, thanks for sharing! 

What do you use for the pass with the small holes?  I always have trouble getting small sparse holes without making the edges too hard, but yours look very natural.
First you need to recompute the normals (by using a Tex Coords from XYZ node following by a Compute Normals node) then you can use a fractal with a small negative displacement and a high noise variation
Title: Re: canyon trip
Post by: WAS on December 30, 2021, 02:17:45 PM
I shared a rock setup that uses a similar approach. the HR-B conglomerate: https://planetside.co.uk/forums/index.php/topic,26592.0.html

This is a scene I would really love a animation of. Flying through the Canyon like I always imagined from earlier Star Wars games.
Title: Re: canyon trip
Post by: Dune on December 31, 2021, 02:53:25 AM
I do think (on second viewing) that the voronoi cracks could be warped a bit more and broken up more, and perhaps add another size.