Recent Posts

1

[Max] I need help! / Re: License Server HELL

« Last post by maru on Today at 15:49:28 »

Please keep in mind that we have dedicated teams of ninjas who can help with licensing/payment/other issues. If it's urgent and/or frustrating, the best way to get help is by contacting us at https://support.chaos.com/hc/en-us/requests/new

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[Max] I need help! / Re: Loading 3DS Max Render Presets deletes all lights in LightMix channels

« Last post by maru on Today at 15:46:08 »

This was reported before and it's a 3ds Max issue, not Corona. If you have some scene objects referenced in your render settings (e.g. LightMix or Render Elements), those references are not saved in 3ds Max Render Presets. You can check that with other renderers. Sorry, but we cannot do anything about it.

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[Max] I need help! / Re: Best way to render same object in 50 different textures?

« Last post by maru on Today at 15:41:41 »

You can animate the radio button in the Corona Select Material or Corona Select Map. (check out the attached video)

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[Max] I need help! / Re: Fireflies!!

« Last post by maru on Today at 15:33:59 »

For how long are you rendering your image? (how many passes)
If you are still getting fireflies after ~50 passes, that could mean that your scene is built with some kind of mistake. It could be a highly reflective surface reflecting some strong light, a light with too high intensity, LightMix, or many other things. You can check some troubleshooting ideas here: https://support.chaos.com/hc/en-us/articles/4528247036305-How-to-get-rid-of-excessive-noise

If you are unable to find the root of the issue by yourself, please send us a support ticket and attach your scene to it (archived with all assets): https://support.chaos.com/hc/en-us/requests/new

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[Max] Resolved Bugs / Re: Low cpu usage (40%)

« Last post by daysleeper1983 on Today at 15:31:22 »

i havent tried with later versions of corona but i think this power throttling thing is a querk about windows rather than corona or any application. because  i have seen a similar fix for some other application on reddit. maybe its because i am using a laptop i dont know.  i dont remember anything like this happening on my desktop workstations.

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[C4D] I need help! / Re: Displacement map rendered jagged

« Last post by Nejc Kilar on Today at 15:18:05 »

The issue is not in the bit depth, the displacement texture attached in the first message has only few shades of grey, increasing bit depth won't help in a slightest. The problem is this texture is pushing Corona displacement too hard. You need to blur it slightly, so displacement would have some room to work nicely. The more variance between neighbouring pixels the texture will have, the more chances for artifacts in displacement will be. You can try to reduce displacement size in render settings to combat that, but it has its limits - eventually increased parsing time and RAM consumption will make this solution impractical.

I would also suggest to consider using Corona pattern instead displacement - i think it would be more preferable solution in your case.

Schooled! Thank you though :)

In retrospect, I should have paid closer attention to the attached displacement map.

@mac_bean please do report back on whether you got it working as intended or not.

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[C4D] I need help! / Re: Corona Shadow Catcher for interior

« Last post by edoardo_explorer on Today at 13:20:33 »

Thank you for all you responses.

Fortunately jojorender gave me the correct name of the process "virtual staging" and I found a useful tutorial on youtube (www.youtube.com/watch?v=YSwU0eF6euM&ab_channel=SoloTraceur).

Apparentely using a Corona light material with the background image applied to a Corona Sky in frontal projection is the solution.
I added a couple of area light to simulate the sun and it's working.
Floor and walls have two SC materials, matte and reflective.

Attached a wip.

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[C4D] I need help! / Re: Corona Shadow Catcher for interior

« Last post by edoardo_explorer on Today at 13:15:27 »

in the old days, Ambient occlusion sufficed, and most of the time still does ;)

Hi burnin,

I'm not sure I understood!
I mean, I can do it in photoshop, with a brush to simulate shadows, but for complex scene I think it's a little tricky.

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[C4D] I need help! / Re: Corona Shadow Catcher for interior

« Last post by edoardo_explorer on Today at 13:14:14 »

Another tip is to use a disc object centered under the chair, but large enough to cover any shadows. Apply the Shadow Catcher material to that abject. In this way, it avoid adding any extra shadows around the room as using the entire floor would do. I have also added an Opacity Map to the SC to further limit and soften the shadows should they creep too far from the disc object.

You can also render so that your chair is output with the shadow all in one file (See attachment. You'll have to download it to see). If you have several shots set up in that same angle, you can just drop that file onto the other images and it will be ready to go. You can slide the chair a bit along the wall after the render. Same process could be added to the wall near the chair so there is a shadow behind the chair. Yes, I realize this isn't a super flexible solution, but easier to deal with one piece.

One limitation is that the shadows that are captured do not show any geometry bumps that may be present in the floor, just smooth shadow which may or may not be a problem.

Hi BigAl3D,
yes use a disc object could be a solution to reduce the visible shadows, but in my case I think that the shadows of wall will be seen anyway.

I was trying to achieve the same result of the car you attached. How did you do it? Is it a set (curved floor+wall) with a Shadow catcher material?
But my doubt was to obtain masked furniture+shadow but with a light coherent with the light of the room.
Maybe a simple area light from the left?

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[C4D] I need help! / Re: Corona Shadow Catcher for interior

« Last post by edoardo_explorer on Today at 13:07:52 »

Not sure what you mean by stopped answering you - was there a ticket number, where you are not receiving any replies? Thanks!

Hi TomG, no he didn't stop answering me.
He was trying different solutions, he came back to me with some alternatives!