- progress.push_task_slice("LOD {}".format(lod_index), i, len(lods))
-
- material_atlas = None
- atlas_flags = [m.render_mode!='EXTERNAL' and m.material_atlas for m in l.data.materials if m]
- if any(atlas_flags):
- mmk = lambda m: m.shader if m.render_mode=='CUSTOM' else ""
- material_atlas_key = mmk(l.data.materials[0])
- key_mismatch = any(mmk(m)!=material_atlas_key for m in l.data.materials)
- if not all(atlas_flags) or key_mismatch:
- raise Exception("Invalid configuration on object {}: Mixed material atlas state")
-
- if material_atlas_key in material_atlases:
- material_atlas = material_atlases[material_atlas_key]
- else:
- material_atlas = create_material_atlas(context, l.data.materials[0])
- material_atlases[material_atlas_key] = material_atlas
-
- tech_name = "{}.tech".format(material_atlas.name)
- if tech_name not in resources:
- material_atlas_export.export_technique_resources(material_atlas, resources)
- resources[tech_name] = material_atlas_export.export_technique(material_atlas, resources)
- elif l.material_slots and l.material_slots[0].material: