Chaos Corona for 3ds Max > [Max] Feature Requests

Region improvements

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RecentSpacesSam:

--- Quote ---3ds Max is great at hiding useful features. :D
--- End quote ---

I literally had the discussion last night where we both said "Hey did you know max can do X!?". Every day's a school day.

So after a bit more discussion internally we concluded that it's not necessarily making the render faster, but making the "noise threshold" calculation far more accurate. It seems that having a large amount of "black space" in the VFB really throws the % off - I guess it's calculating an average?

As for not clearing the VFB, unfortunately that assumes we're starting with a previous render and not opening the file just to make the change :')

maru:

--- Quote from: RecentSpacesSam on 2022-11-17, 09:43:23 ---As for not clearing the VFB, unfortunately that assumes we're starting with a previous render and not opening the file just to make the change :')

--- End quote ---

Can you explain what you mean here?
If you use the "Clear VFB" option, this will reset the whole content of the VFB to black when you start rendering. If you disable it, it will show whatever was rendered previously.

Do you mean that you would like to load an existing CXR image into the VFB without starting the actual rendering, and then draw some regions to update some areas?

aaouviz:
I think he means that sometimes they're opening the file specifically to re-render the small portion. So the VFB is blank by default as nothing has been rendered yet.

RecentSpacesSam:

--- Quote from: aaouviz on 2022-11-17, 10:39:16 ---I think he means that sometimes they're opening the file specifically to re-render the small portion. So the VFB is blank by default as nothing has been rendered yet.

--- End quote ---

Yes, this. Occasionally a Client may send an updated map for fabric/rug/finish that they wish to use and that may be the only thing that needs rendering.
Open scene, change material, render object only. My original point was that it seems the noise calculation is thrown off by black pixels/empty space in the VFB but rendering a crop makes it more time consuming to comp (manual alignment instead of dropping a full image in place using the alpha)


--- Quote from: maru on 2022-11-17, 09:48:29 ---
Can you explain what you mean here?
If you use the "Clear VFB" option, this will reset the whole content of the VFB to black when you start rendering. If you disable it, it will show whatever was rendered previously.

Do you mean that you would like to load an existing CXR image into the VFB without starting the actual rendering, and then draw some regions to update some areas?

--- End quote ---

Loading a CXR (or other) into the frame buffer would also be really helpful for the purpose of region-ing the object you want prior to starting the render :)

Ink Visual:
Hey,
Agree with RecentSpacesSam on this,
We also noticed that rendering an object with "render selected" option actually takes longer than running whole image again and limiting area to a region of interest.
Not sure if this is a bug or technical limitation.
(we're using Corona 8.2 atm but the behaviour described above is there for quite a couple versions back for sure)

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