As a related issue to texture support, BlenderBIM has now implemented improved support for externally defined materials. You can link in a “material passport”, which defines shaders for multiple rendering engines. This allows you to link in not just textures, but highly complex material shaders for multiple uses, such as traditional visualisation, real time game engine views, and light simulation. Please note that this is purely a link to external shader standards, not the built-in IFC texture support, but it is highly useful nonetheless and therefore may be relevant to this discussion.
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