Add semantic attribute to the 3D Gaussians ?

[nhghieu22-pixel]

Hi @aras-p and everybody,
I am currently work on a project that will apply semantic segmentation onto 3D Gaussians while training; and as the result, each Gaussian will have its own semantic_id to indicate which class it's in, this can be used to modify the scene semantically or render depth map.

I completed the training, I will append another attribute named semantic_id to the back of each point in the point cloud PLY file; but I met bugs when naively integrating my updated PLY file into this repo just by simply changing 2 utils files used to read the PLY file to accept 1 more element:

{repo}/package/Editor/Utils/GaussianFileReader.cs
{repo}/package/Editor/Utils/PLYFileReader.cs

Looks like I need to fix some more deep down related to Shaders, but I have no idea at this time. I am in urgent need to have solution to this, so if you know or have tried please reply me.

Thanks.

Best regards,
GH