Some time ago OCC (>= 7.5) has introduced the ability to import and export STEP format keeping transparency properties.
KiCAD has already moved to OCC >=v7.5 both in stable release and in the nightly one.
The same for FreeCAD that has included this option since the now stable 0.20 release.
Then the STEP 3d format could include transparency property when importing and exporting 3D models.
So, ATM the only issue in dropping the wrl models for KiCAD and keeping the ability to make realistic rendering, would be the missing option to assign materials to STEP models.
But that missing option could be workaround using a color table, which would assign a specific color to a specific material table of properties.
That is in fact already adopted when generating âwrlâ models from âstepâ models in the 3D KiCAD generating scripts libraries.
The material properties are already coded using these documents
produced by @kammutierspule when we standardized wrl model generation.
That approach was already used by sparkfun for rendering pcb 3d models.
In this way KiCAD could drop the need to have a double 3D library which is in fact a library duplicating the model information only to add realistic rendering.
Could it be an option for the next stable release?