[QGIS-Developer] QGIS 3D: Move away from Qt 3D?

[David Koňařík]

On 2/14/26 10:57, Vincent Picavet via QGIS-Developer wrote:
> Hello,
> 
> As often in OpenSource projects and engineering teams, I have the 
> impression that we are looking for solutions before having defined the 
> problem.
> 
> 3D engines are as diverse as use cases can be. Without a clear vision of 
> what we would like for 3D in QGIS in terms of features and goals, I do 
> not see the point in assessing technical solutions.
> 
> You cannot compare 3D framework if you do not know if your main goal is 
> photorealistic rendering of objects, or 3D analysis ( or both ).
> 
> I would rather suggest to :
> 
> - ask end-users (and not developers) about what they really need in 3D
> 
> - gather real-world use cases from users
> 
> - get a list of features for 3D in other softwares ( ESRI & others )
> 
> - start establishing a roadmap and vision from these elements
> 
> - THEN and only then, look for technical solutions

Hi,
I've been working under the assumption that our goal would be to 
replicate QGIS' existing 3D functionality, just with a new engine.

It would certainly be nice to have a formulated long-term plan for the 
3D view, but I think that's somewhat orthogonal to the engine change. 
I'm not even sure how such a thing based primarily on user input would 
be created or applied when most work is funded by contracts for 
particular tasks.

David Koňařík