Setting Separate properties for each triangle in obj Mesh

[USharma002]

Hi, I am trying to implement radiosity and then render those triangles using the Mitsuba Renderer. Currently I am loading the scene, separating each triangle from obj Mesh and after calculating radiosity, saving each of them into separate obj and then loading into Mitsuba to render using max_depth=1.
But having to save each triangle separately in obj is becoming a major bottleneck, so is there any way to render triangles from a dictionary with array of information or similar idea?

[njroussel]

HI @USharma002

You can define face attributes and then use them as a texture by using the mesh_attribute plugin: https://mitsuba.readthedocs.io/en/stable/src/generated/plugins_textures.html#mesh-attribute-texture-mesh-attribute. You can then query that texture manually or pass it to a BSDF plugin.