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1

[Max] I need help! / if you use OCIO, then when you open the scene, the render colors change randomly

« on: 2024-01-15, 18:43:54 »

Below are 2 pictures, this is the same scene, all textures use the Corona bitmap shader, the color profile is set to ACEScg, I render, save the picture, restart 3D Max, load the scene again, render and the picture has different colors, there are always options 2, either more saturated colors, or more calm ones, as if there are 2 profiles in the scene and 3D Max randomly chooses which one to use every time the scene is loaded - this is a big problem
how to work in a scene where you don’t know what colors you will have the next time you load 3D Max

2

[Max] I need help! / I switch to OCIO and the speed drops 4 times

« on: 2024-01-15, 16:14:35 »

Hi all.
I'm trying to study OCIO in 3d max 2024.2 and Corona 11 - since I've been waiting for this for a very long time, but after I switch the mode from Gamma Workflow to OCIO, the rendering speed drops 4 times
Gamma - 00:49
ACEScg - 02:41
Rec709-sRGB - 02:30
I don't change anything in the scene, only the color manager parameter, why is this happening?
Changing the color space should not affect the rendering speed, it is the same rendering but in a different color/light range
Can anyone explain why this happens?
and what is the correct way to use OCIO + Corona in 3D Max?

I also noticed that the rendering result may change, I switch to OCIO, do a test render, set up tone mapping in VFB using Linear to Cineon Log.LUT, for example, save the scene, open it in another 3dmax on my PC, start rendering and the pictures are different
2 3Dmax rendered the same scene, but the pictures turned out different
I restarted the scene on the first 3D max and then the picture also changed, it became similar to the second 3D max
It turns out that I saw the wrong picture in the first 3D Max, VBF showed me the wrong picture, and to fix it, I had to restart 3D Max

it seems that OCIO support in Corona 11 is not fully implemented and is very crude, which is very disappointing

3

Gallery / «USPENSKY LESA 23 WINTER»

« on: 2023-12-20, 12:07:04 »

Soft: 3DS MAX / CoronaRender / ForestPack / RailClone /

Contacts:
Skype: Hunter-3D
Mail: info@ybochkaryov.com
Telegram: https://t.me/Yuriy_Bochkaryov
Home: https://ybochkaryov.com
Behance: https://www.behance.net/Bochkaryov
Insta: https://www.instagram.com/yuriy_bochkaryov/
Facebook: https://www.facebook.com/CGYuriyB/

4

Gallery / «Hect»

« on: 2022-09-14, 10:40:22 »

«Hect»
Location: Belgium
Year: 2017
𝗖𝗚 𝗔𝗿𝘁𝗶𝘀𝘁: Yuriy Bochkaryov
𝗦𝗼𝗳𝘁: 3DS MAX / CoronaRender / ForestPack / RailClone /

https://ybochkaryov.com/gallery
https://www.behance.net/Bochkaryov
https://www.facebook.com/CGYuriyB/
https://www.instagram.com/yuriy_bochkaryov/
https://www.artstation.com/yuriy_bochkaryov

5

Gallery / Fachwerk X100

« on: 2022-04-18, 19:30:31 »

Year: 2021
Soft: 3DS MAX / CoronaRender / ForestPack / RailClone /

Contacts:
Skype: Hunter-3D
Mail: info@ybochkaryov.com
Telegram: https://t.me/Yuriy_Bochkaryov
Home: https://ybochkaryov.com
Behance: https://www.behance.net/Bochkaryov
Insta: https://www.instagram.com/yuriy_bochkaryov/
Facebook: https://www.facebook.com/CGYuriyB/

6

Gallery / Bozart 24

« on: 2021-10-28, 16:18:34 »

Location: RUSSIA / MOSCOW
Year: 2020
𝗖𝗚 𝗔𝗿𝘁𝗶𝘀𝘁: Yuriy Bochkaryov
𝗦𝗼𝗳𝘁: 3DS MAX / CoronaRender / ForestPack / RailClone /
𝗖𝗢𝗡𝗧𝗔𝗖𝗧𝗦:
Skype: Hunter-3D
Telegram: https://t.me/Yuriy_Bochkaryov
Mail: info@ybochkaryov.com
Home: https://ybochkaryov.com
Behance: https://www.behance.net/Bochkaryov
Facebook: https://www.facebook.com/CGYuriyB/
Insta: https://www.instagram.com/yuriy_bochkaryov/

7

Gallery / «ONE 140»

« on: 2021-10-14, 11:21:46 »

«ONE 140»
Location: RUSSIA / MOSCOW
Year: 2021
Behance: https://www.behance.net/Bochkaryov
Facebook: https://www.facebook.com/CGYuriyB/
Insta: https://www.instagram.com/yuriy_bochkaryov/

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Gallery / «𝗨𝗦𝗣𝗘𝗡𝗦𝗞𝗬 𝗟𝗘𝗦𝗔 𝟮𝟯»

« on: 2021-02-08, 18:42:46 »

«𝗨𝗦𝗣𝗘𝗡𝗦𝗞𝗬 𝗟𝗘𝗦𝗔 𝟮𝟯»
Location: RUSSIA / MOSCOW
Year: 2020
𝗖𝗚 𝗔𝗿𝘁𝗶𝘀𝘁: Yuriy Bochkaryov
𝗦𝗼𝗳𝘁: 3DS MAX / CoronaRender / ForestPack / RailClone /
𝗖𝗢𝗡𝗧𝗔𝗖𝗧𝗦:
Skype: Hunter-3D
Mail: info@ybochkaryov.com
Home: https://ybochkaryov.com
Insta: https://www.instagram.com/yuriy_bochkaryov/
Behance: https://www.behance.net/Bochkaryov

9

[Max] Resolved Feature Requests / Excluding Objects for Caustic Calculations in corona light / sun / HDRI

« on: 2021-02-08, 13:26:10 »

We have the option to exclude objects when illuminated by corona light or the sun, then the light will ignore those excluded objects. I think we need the same function for calculating the caustic.
Corona light, sun or HDRI can illuminate absolutely the entire scene, but we will turn on caustics only on those objects - where we need it, this will save time, direct the CPU power only to the object where we really need caustics!
Now if I need caustics, then I have to wait until it is counted in the whole scene, on all objects where there are reflections and refractions, but now we are using the PBR model of shaders, which means there are more or less reflections, but on all objects in the scene that makes rendering caustics very difficult for any CPU.
I think it is not correct to count caustics throughout the scene, if, for example, I only need it from glass in a window or in water in a pool. Therefore, we need a function to exclude an object for rendering caustics from any light source - corona light / sun / HDRI
This will allow us to make our pictures even more beautiful and realistic in the future. Now we can render only glass teapots with caustics in an empty scene, in real projects this is not possible, or we must consider caustics as a separate layer hiding all elements from the scene and then apply the result in Photoshop - this is not convenient and incorrect.

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