To PBR or not to PBR? - Some issues encountered.

Author	Message
TonyDPrime	TonyDPrime Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: Last Year Posts: 3.4K, Visits: 12.4K	In making characters I found that I kept encountering a darkness/lightness imbalance sometimes between the SKIN_FACE and SKIN_BODY. It turned out that I had an Ambient Occlusion map and bump on the Face but not on the body. Once I put respective maps for AO and Bump on the body, then the imbalance was gone, or at worse, greatly reduced. But before that I kept trying to match the imbalance by darkening the body's brightness a few ticks. BTW - @Colonel Klink, the first pics you have in this thread, especially the 2nd side shot of Roger, the character looks like Jean Luc Piccard! :) Cool characters!

justaviking	justaviking Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: Last Year Posts: 8.2K, Visits: 26.5K	I was reading another thread about materials and PBR-vs-classic rendering, and it reminded my of your post here, struggling with the lightness/darkness of the face. Check out the change in color of the green coat in Wires' post... https://forum.reallusion.com/FindPost342681.aspx . iClone 7... Character Creator... Substance Designer/Painter... Blender... Audacity... Desktop (homebuilt) - Windows 10, Ryzen 9 3900x CPU, GTX 1080 GPU (8GB), 32GB RAM, Asus X570 Pro motherboard, 2TB SSD, terabytes of disk space, dual monitors. Laptop - Windows 10, MSI GS63VR STEALTH-252, 16GB RAM, GTX 1060 (6GB), 256GB SSD and 1TB HDD

paulg625	paulg625 Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: 3 Years Ago Posts: 388, Visits: 1.4K	Remember with PBR it is a different model for lighting and interacting. you need to look at what the metallic and roughness settings (set by default to 50% gray) and the way it reflect is now tied to these settings as well not just the defuse so these will affect the lighting model. So when you convert the model in Iclone all the reflective settings will be the same. you will need to adjust for each item (such as brows) to get the look your wanting. But like Justaviking said once the Model is set it will look right in all lighting conditions.

justaviking	justaviking Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: Last Year Posts: 8.2K, Visits: 26.5K	The character should look the same in other people's iC7 environment, allowing for different environments and lightings of course. I spent a few minutes playing with the "Adjust Color" sliders on an avatar, trying to make him dark-skinned like your character. I discovered that the character I was using had a very light-colored skull. It became very obvious when I made the skin darker, and the top of his head was many shades lighter than the face. The only way to fix that character would be to do a lot of serious repainting in a Photoshop-like application. That's why I got curious what tools you were using. It was really apparent, in hindsight. Looking at the 2D "Base color" texture, you could see how the top of the head was much brighter than the face. I believe this is a case where the "material" wasn't painted correctly. It had "lighting" included in the base color texture. The correct way is to have the base color flat with no lighting information applied to it. Then you rely on the scene to properly light your model. iClone 7... Character Creator... Substance Designer/Painter... Blender... Audacity... Desktop (homebuilt) - Windows 10, Ryzen 9 3900x CPU, GTX 1080 GPU (8GB), 32GB RAM, Asus X570 Pro motherboard, 2TB SSD, terabytes of disk space, dual monitors. Laptop - Windows 10, MSI GS63VR STEALTH-252, 16GB RAM, GTX 1060 (6GB), 256GB SSD and 1TB HDD

Colonel_Klink	Colonel_Klink Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: 2 days ago Posts: 1.1K, Visits: 7.7K	Here's the updated characters after re-skinning in CC2. That is from my iClone 7 settings. The problem will be how they look on other people's iClone 7 75% of original size (was 673x19) - Click to enlarge H75% of original size (was 673x19) - Click to enlarge * * * * * * * * * * * * * * * * * * See all my content in one place 75% of original size (was 673x19) - Click to enlarge Facebook Page: CWK3D Game and Film Content Cancer Survivor - Retired Teacher - Geriatric Icloner still learning Hardware: ZX80; Operating System- ZX80 Basic; CPU - ZX80 @ 3.25 MHz; Memory - 1KB; Hard Drive - N/A; Storage - Cassette; Monitor: Any old CRT TV

Colonel_Klink	Colonel_Klink Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: 2 days ago Posts: 1.1K, Visits: 7.7K	justaviking (9/26/2017) What are you using to adjust the colors? Not that it matters, simply curious. The "Adjust Color" widget in iClone (contrast, hue, contrast), or in CC, or in an external editor such as Photoshop? P.S. Good looking character. I'm adjusting the colors using the PBR sliders. I've decide to experiment on my next character in CC2 then convert it back to CC so that iClone 6 people can use it as well. * * * * * * * * * * * * * * * * * * See all my content in one place 75% of original size (was 673x19) - Click to enlarge Facebook Page: CWK3D Game and Film Content Cancer Survivor - Retired Teacher - Geriatric Icloner still learning Hardware: ZX80; Operating System- ZX80 Basic; CPU - ZX80 @ 3.25 MHz; Memory - 1KB; Hard Drive - N/A; Storage - Cassette; Monitor: Any old CRT TV

justaviking	justaviking Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: Last Year Posts: 8.2K, Visits: 26.5K	What are you using to adjust the colors? Not that it matters, simply curious. The "Adjust Color" widget in iClone (contrast, hue, contrast), or in CC, or in an external editor such as Photoshop? P.S. Good looking character. iClone 7... Character Creator... Substance Designer/Painter... Blender... Audacity... Desktop (homebuilt) - Windows 10, Ryzen 9 3900x CPU, GTX 1080 GPU (8GB), 32GB RAM, Asus X570 Pro motherboard, 2TB SSD, terabytes of disk space, dual monitors. Laptop - Windows 10, MSI GS63VR STEALTH-252, 16GB RAM, GTX 1060 (6GB), 256GB SSD and 1TB HDD

Colonel_Klink	Colonel_Klink Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: 2 days ago Posts: 1.1K, Visits: 7.7K	Closer to what I want to achieve, but what concerns me is how PBR deals with eyebrows and hair... black for some reason turns grey. 75% of original size (was 673x19) - Click to enlarge * * * * * * * * * * * * * * * * * * See all my content in one place 75% of original size (was 673x19) - Click to enlarge Facebook Page: CWK3D Game and Film Content Cancer Survivor - Retired Teacher - Geriatric Icloner still learning Hardware: ZX80; Operating System- ZX80 Basic; CPU - ZX80 @ 3.25 MHz; Memory - 1KB; Hard Drive - N/A; Storage - Cassette; Monitor: Any old CRT TV

Colonel_Klink	Colonel_Klink Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: 2 days ago Posts: 1.1K, Visits: 7.7K	Here's the look I'd like to achieve (Levels done in Photoshop). 75% of original size (was 673x19) - Click to enlarge * * * * * * * * * * * * * * * * * * See all my content in one place 75% of original size (was 673x19) - Click to enlarge Facebook Page: CWK3D Game and Film Content Cancer Survivor - Retired Teacher - Geriatric Icloner still learning Hardware: ZX80; Operating System- ZX80 Basic; CPU - ZX80 @ 3.25 MHz; Memory - 1KB; Hard Drive - N/A; Storage - Cassette; Monitor: Any old CRT TV

Colonel_Klink	Colonel_Klink Posted 8 Years Ago
Distinguished Member Group: Forum Members Last Active: 2 days ago Posts: 1.1K, Visits: 7.7K	Thanks for your replies, Guys. Here is a new render with IBL set to 9 and Roger's skin PBR Roughness settings at Brightness -13 and Contrast at 8. I'm not too concerned with the cloth settings as they are stock cloth with diffuse color changes. However the skin tones are not as vibrant and as dark as in the iClone 6 pic in the original post. Still, it looks okay. My concern is that I'm producing characters for the market place and attempting to eliminate issues before the occur for the end-user. 75% of original size (was 673x19) - Click to enlarge * * * * * * * * * * * * * * * * * * See all my content in one place 75% of original size (was 673x19) - Click to enlarge Facebook Page: CWK3D Game and Film Content Cancer Survivor - Retired Teacher - Geriatric Icloner still learning Hardware: ZX80; Operating System- ZX80 Basic; CPU - ZX80 @ 3.25 MHz; Memory - 1KB; Hard Drive - N/A; Storage - Cassette; Monitor: Any old CRT TV



0 active, 0 guests, 0 members, 0 anonymous.
No members currently viewing this topic!

0 active, 0 guests, 0 members, 0 anonymous.

No members currently viewing this topic!

To PBR or not to PBR? - Some issues encountered.

To PBR or not to PBR? - Some issues encountered.

Reading This Topic