GLB Model with Tangent Data Loses Tangents After Conversion in Playcanvas Editor

Help & Support
1

Hi all, I’m having an issue: my GLB model (pre-configured with tangent data) loses tangents after using the Playcanvas Editor’s conversion.

2

@slimbuck - do you know what happens here?

@gameatp - typically, the engine does not use imported tangent vertex data, but computes tangent space in shaders as needed.

There are some possible compatibility issues with this in some cases (see GitHub · Where software is built), but it has not been addressed yet unfortunately.

3

Yeah, it’s been a while but I believe we ignore mesh tangents. I think the engine still has a render path to use tangents, but it likely doesn’t work.

@gameatp do you have a particular need for custom tangents?

4

ok, thinks