Shadows in realistic views 2021

[j.wrightPYNCR]

Hi all, 

I have been looking at an issue we have had in our office the past couple of projects we have been working on. 

The first issue is the shadows on elevations and the crop view in Realistic View. For whatever reason when I have a small building (I threw this together for demonstration purposes so I fully understand architecturally its awful), see screenshot below: 

The shadows on the gable look fine, however there also seems to be like a "camera flash" in the top right window on the building on the left??? 

However if I array the project to an extreme case 100 the shadows don't disappear they just fade out to almost nothing. 

However what is more strange is where I crop the view with the 100 arrayed buildings, they come back darker? The shadows seem to be linked to the crop region somehow. 

I also have some screen grabs of a live project where the shadows are just messing up all over the place? 

The below is the realistic view: 

and the below is the consistent colour view.

 Why is the shadow wrapping or avoiding the window edge on the top right? The shadows around the window are random, the gutter shadow is awful. There are a few more below: 

[barthbradley]

Might not even be Revit. Might be your Video Card.  Disable Hardware Acceleration.  

https://help.autodesk.com/view/RVT/2019/ENU/?guid=GUID-0162E4FA-AC42-419F-B11A-7DFC99DFE1CD

[ToanDN]

- 1st issue: If the shadows show properly when the view is cropped then crop the view

- 2nd issue: Try 3d elevation views (front, back, left, right, or orient to a match 2d elevations), and see if the shadows improve

[j.wrightPYNCR]

Hi thanks for the response.

We have tried multiple computers at work, checked the graphics drivers all up to date. I have disabled hardware acceleration and no joy. I tried it on our rendering machine purpose built for lumion, i9 processor 2080super rtx graphics card with 64gb ram and still the same. It's not just the one file, it's a few projects we have, and I have started one from scratch without custom materials or even windows etc and still having this issue with the new real time rendering shadows on elevations. It wasn't broken before so I can't see why the change was implemented or atleast give the option to use rendered real time shadows or not. Otherwise we will be going back to colouring elevations in Photoshop again.

[j.wrightPYNCR]

Hi thanks for the response.

The point of the cropping view was just me testing and blank project. I discovered that there is a link between the crop region size and the shadow quality. The actual projects we have we can crop them any smaller as it would hide half the building and it didn't actually solve the issue on the more complex projects.

It's a good idea on the 3D elevations, I hadn't thought of that, however I still feel like this shouldn't be the solution, I agree that real time rendering shadows was a step forward but for 2D elevations was a mistake in my opinion, atleast have the option to choose between the two. When it's on the shaded view the shadows are perfect, I just want simple basic shadows which we have in pre 2021. 

I will try the 3D view would be interesting to see of it works as a temp solution. 

[barthbradley]

I feel your pain. Real-Time Realistic has been a nightmare for us as well.  It seems worse in 2023.