Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: lollolo on 2020-06-27, 12:35:13

Title: Baked Displacement
Post by: lollolo on 2020-06-27, 12:35:13

Hi

I struggle with displacement which is baked from high-poly mesh to low-poly.
I get always artifacts along the edges. In this case, I used the C4D tool for baking but I get the same when I use a different software.
C4D nativ render result to compare. I get similar artifacts with C4D when I activate "Round Geometry" in the displacement channel.

Do you have a hint for me what I'm doing wrong?
Thanks and have a nice weekend!

C4D R20
Latest daily

Title: Re: Baked Displacement
Post by: burnin on 2020-06-28, 18:42:57

Would you care posting the scene to investigate?

Title: Re: Baked Displacement
Post by: lollolo on 2020-06-28, 22:54:30

As the original tif file for displacement has around 100mb, I loaded it into Affinity Photo and exported it again as a 16bit tiff. (only 5mb now)
I rendered again with C4D standard renderer and look, something similar to what I get with Corona. Edges clearly visible. See image a
So I exported it again as a 16bit png and the edges disappeared. Note that the png has a linear color profile and the tiff has not. (I don't understand why...) See image b

Image c to compare. Edges are visible in both cases.
Could it also be a color profile issue? If someone has a hint, I would be very glad :)

Title: Re: Baked Displacement
Post by: burnin on 2020-06-29, 18:23:48

I think it's a shading bug on UV island boundaries and developers may want to look into. IIRC, I already observed this strange kind of behavior.

Title: Re: Baked Displacement
Post by: lollolo on 2020-07-07, 09:06:53

Hi, had someone from Corona the time to look into it? Do you have a solution or is it reported as a bug?

Thanks!

Title: Re: Baked Displacement
Post by: lollolo on 2020-07-10, 14:07:05

Hi, still waiting for a statement ;) Can someone from Corona check this issue?

Thanks!

Title: Re: Baked Displacement
Post by: Beanzvision on 2020-07-10, 15:06:29

Hi, I have been looking into this over the past week and still haven't been able to find the reasoning as to why this is happening. I will continue to do so and I'll try and update you as quickly as I can.

Title: Re: Baked Displacement
Post by: lollolo on 2020-08-04, 10:15:54

Quote from: beanzvision on 2020-07-10, 15:06:29

Hi, I have been looking into this over the past week and still haven't been able to find the reasoning as to why this is happening. I will continue to do so and I'll try and update you as quickly as I can.

Hi, were you able to find the reason why this happens?

Thank you and have a good day!