FBX import under ue4/ue5 runtime

Original article , Reprint please indicate the source .

In fact, I don't think there is a mature plan for this part in the market ,Epic It's very expensive in the mall , The functions of downloading are also uneven . Many problems

1> Import display Mesh, Vertex of triangle , The problem being solved ：
1.1> Problems encountered ： The model is not unitized , Smaller size , May refer to UE4 Inside the source code resolved 2021-06-18 16:40:09
1.2> Problems encountered ： The model flashes coplanar
1.3> Problems encountered ： Model clipping error (Revit Derived FBX There is a problem ,3DMax It's normal )
have already been solved
1.4> Problems encountered ： Single Mesh There are multiple materials , At present, it turns into ProceduralMeshComponent Of Section Not right
have already been solved
1.5> No complex collisions ： have already been solved

2> Imported materials
2.1> Semi transparent problem ： have already been solved
2.2> Some colors are light have already been solved , Color coefficient 2.2 The next power
2.3> There is no map to prompt
2.4> To add their own set of material library , One is to facilitate the replacement of materials after later import , Second, rules can be added during import , Make it more beautiful after import .

3.1> Optimization in import , Merge into a single by material Section have already been solved , When importing, you can set whether to merge
3.2> Optimization in import , Multithreaded asynchronous read +spawn_and_createsection, And you can see the import progress have already been solved

4> The archive

5> Model list , In fact, this one is still one BIM data

6> Modify the model list , It's similar UE4 Of Transform edit

7> At present, it is converted into UProceduralMeshComponent, There is another one on the market RuntimeMeshComponent,18 This component has been available since , At the beginning, some colleagues tried . It is said that the efficiency should be higher , Not yet tested
have already been solved

No smoothing group information was found in this FBX scene. Please make sure to enable the ‘Export Smoothing Groups’ option in the FBX Exporter plug-in before exporting the file. Even for tools that don’t support smoothing groups, the FBX Exporter will generate appropriate smoothing data at export-time so that correct vertex normals can be inferred while importing.
In this FBX No smoothing group information is found in the scene . Before exporting the file , Please make sure that FBX Enable... In the export plug-in “ Export smoothing group ” Options . Even for tools that do not support smoothing groups ,FBX The exporter will generate appropriate smoothing data when exporting , So that the correct vertex normals can be inferred when importing .

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