Blenderproc: About the material

[Xiaflowers]

Hello! Can you tell me where is the "bop_tless_vertex_col_material.*" ? And If I want to render the glass material for my own model, where do I import the material from?

Thank you for your project!
I'm looking forward to your reply!

[MartinSmeyer]

Hi,
this is just the material name belonging to the tless objects. It is loaded from the ply vertex colors and meant to be randomized.
For glass set transmission to 1:

        "cf_set_transmission": 1.0

[MartinSmeyer]

Okay so the answer is a bit more complicated. Rendering glass also requires you to reparameterize the renderer to make more light bounces. So in the RgbRenderer config set:

        "max_bounces": 100,
        "transmission_bounces": 100,
        "transparency_bounces": 100,
        "glossy_bounces": 100,
        "volume_bounces": 100,

If you are starting with the BOP examples, also comment out all other material manipulations. e.g. cf_set_specular, cf_set_roughness, cf_set_base_color. Also comment out this line to avoid setting the vertex color:

https://github.com/DLR-RM/BlenderProc/blob/fe5ea258acb9e3ec11e0d4c6f380321e01c4e751/src/utility/loader/BopLoader.py#L312

After these changes you get this:

[Xiaflowers]

oh, thank you very much, your reply is very helpful to me!