Chaos Corona for Cinema 4D > [C4D] Bug Reporting

Displacement problem

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maru:

--- Quote from: Martin Janousek on 2022-05-18, 20:49:28 ---In the last project we had to turn off the displacement of the bricks completely.. Crops for comparison. We've had displacement 1px settings.

--- End quote ---

This looks like an incorrect texture used for displacement and too strong value. In this case, I suspect that bump would actually be a better choice than displacement.

But anyway, if anyone is having some problems with displacement (like the triangular artifacts in the 1st post here or anything else) please feel free to contact us with your files (preferably simplified) here: https://support.chaos.com/hc/en-us/requests/new

Thank you!

frv:
Displacement is a problem in Corona render. I have images with gravel for pavement and you always see fine straight lines every where. I also see it in images posted in the galleries. In Corona render its best to stay away from displacement for architectural work. But without displacement the photoreal image quality suffers a lot.

But displacement for masonry, gravel etc works better at very high resolution rendered images with pixel settings at 1. I am not sure if you can set a finer pixel setting like 0.5. But no matter what you do you get all sorts of artefacts that I think where no problem a while back. The displacement textures for masonry are usually rather bad as well. I think things look better if you have high res displacements maps as well with not all that harsh gradients between what needs to be displaced and what not.

I attached an example of the struggle. This was rendered at high res but the masonry still has artefacts. The same displacement texture and model in Lumion is completely hassle free.

The pavement btw is by the Corona material library and show less artefacts.

dj_buckley:
Glad I'm not alone on this.  I'm now at a point where I avoid displacement where possible because it's so unpredictable and prone to an array of artifacts

frv:
Indeed it is a problem but good displacement maps are as well. It will take a lot of experimenting to find out where the problem is exactly. Thing is that other renderengines suffer much less and Lumion has no problem at all.
I will also take a look at Redshift, maybe its better for displacements. A lot of asset developers have started to provide for Redshift ready stuff as well.

If displacement keeps being a major issue I probably have to move on. Can't spend half of a job on getting displacement on track.

maru:
It seems that there is some real issue here, so please contact us with your files (preferably simplified) here: https://support.chaos.com/hc/en-us/requests/new
It is possible to attach files in the contact form itself, but you can also skip this step and we will ask you for your files later with a special upload link.

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