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

Motion-blur support when using map sequences / animated textures

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"at least until devs could figure proper changing topology MB support" 
One can only dream.....
How many years have passed ¿


--- Quote from: romullus on 2024-04-26, 14:42:10 ---An idea - what if the devs would add "advanced motion blur hack" checkbox somewhere in the UI, that would automatically do what Marcin described here, i.e. split the selected time range in multiple sub-frames, render them out in sequence, then merge them all and output result to VFB. I think that would be simple enough to implement solution that would be very useful for so many users, at least until devs could figure proper changing topology MB support.

--- End quote ---
This is not about changing topology (I don't think we'll ever see that btw...), it's about animated textures, which would be useful on its own.

But I fully support the 'under-the-hood' automated hack. It would make things way easier for all things that don't support motion blur. Quite a good suggestion, actually! Doing it manually is a no go for animations (imagine the amount of work needed), so anything that allows for this to be automated would be very welcome.


--- Quote from: maru on 2024-04-26, 11:30:48 ---This was requested in the past and I am afraid there are some technical reasons why this cannot be done. I will double check that and will report it as a feature request if it's not there yet.
There is however a workaround that you can use to get "true" motion blur whatever you are rendering:
- Render a sequence
- Save each frame as a CXR file
- Use a low pass limit (e.g. 2 passes - if we render 100 frames with 2 passes the quality will be like rendering a single frame for 200 passes)
- Once the rendering is completed, open the Corona Image Editor, click the "Merge" button and pick your rendered frames
This should result in correctly blending all frames just as if it was single frame rendered for x number of passes. The result should look exactly like a photo with long exposure. The advantage here is that you can still control exposure and other post/tone mapping params.
The disadvantage is that you cannot control the shutter curve.

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Thanks for your reply!
Although this is one of the stupidest things I've ever done, but yes, it works) unfortunately this method does not allow you to interactively see a preview of what will happen with different shutter speeds, which slightly destroys the continuity of the creative process and is not suitable for not such long shutter speeds, like shooting a mountain river at 1/10 s

Well, let's hope for the best, considering that you guys have already implemented the main layer of features that Corona required, I will accept if the only change in the 13th version of Corona will be just expanded support for motion blur for different use cases :D

(Report ID=CMAX-981)
(Report ID=CMAX-982)


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