Failed assertion Texture View Validation texture usage (0x01) doesnt.How bake texture maps in Blender: UV Unwrap Object. 6.1 FBX to Trainzmesh Conversion Warnings and ErrorsHi Im exporting an object from Blender to an FBX (or GLTF/GLB) file to then. Viewing the texture in the 3D viewport and rendering an object with a texture. These are pretty simple and similar, so we will look at them closer to the end of the article. We call them generated coordinates and object coordinates. For procedural textures in Blender we have two different ways that is common for displaying them on an object.

That tutorial uses a different mesh model.The Blender Environment Textures. An additional video tutorial can be found at Exporting basic Cube from Blender with PBR Materials. Press TAB to enter edit mode, press A to select all, then press U and select Smart UV Project, for low resolution textures, turn up the island. As a result if your model is not unwrapped it can completely scramble the textures.

Import the model into Trainz. Apply a Trainz material including textures. Create a UV map for mapping mesh polygons to a texture. Once your object is exported, add the 3D object to your Spark AR project.

The Shader Editor will show a Principled BSDF Shader node and a Material Output node. The Shader Editor was called the Node Editor in earlier versions of Blender. It is useful to have the 3D Viewer in LookDev mode (aka Material Preview). There are a number of windows visible but the two of most interest are the 3DViewport at the top and the Shader Editor at the bottom.

This will add a texture node. Use Shift A and select Texture->Image Texture. We will add three texture nodes and a vector conversion node for the normal map image. For example, Trainz expects the emissive, roughness, ambient occlusion and metallic values to be embedded in a 'parameter' file. It's worth noting that the Principled BSDF shader already has a number of PBR values but you cannot assume those values will be correctly exported to Trainz.

Connect the texture node Color output to the shader Base Color input. You may need to navigate Blender to your working folder as it doesn't default to your Blender file location. Select the top texture node, click on Open and add the file 'box_albedo.png'. Repeat so you end up with three texture nodes. Select the Image Texture Node and press Shift D and drag the duplicated node below the first texture node.

Change the Color Space to Non Color. The box in the 3D Editor will likely look shiny and will reflect any environment images you may have used. Connect the texture node Color output to the shader Roughness input. Select the middle texture node and load the file 'box_parameter.png'.

The final shader node setup should look similar to the following picture. Change the Normal texture node Color Space to Non Color. It doesn't appear to affect Trainz if that field remains blank. You can, if you wish, choose a UV map on the Normal Map node.

Select File->Export->Export FBX and the FBX export window will be shown. Change to the Default workspace and select the mesh object in the 3D Viewport. We use the roughness input only to provide a link to the parameter image within the material so that Trainz can find it.You should not assume the mesh, as viewed in Blender, will look exactly the same in Trainz. It will be a value derived from the RGB channels (emit, roughness and AO). For our arrangement, the albedo and normal should be correct but the roughness input is not a true roughness value.

Apply Unit and Apply Transform: Leave blank. This automatically changes the Up option to “Z Up” which is correct for Trainz. Forward: select option “Y Forward”. Tick Selected Objects and leave Active Collection blank. Path Mode and Batch Mode. This option allows you to define an export configuration that can be recalled rather than having to set options each time.

The mesh will be exported.+ Click to show or hide comments about the exporter settingsTIP: You can save your preferences for a given situation by clicking on the plus button (+) next to Operator Presets and saving the preset with a name.When you submit your asset, Trainz will convert the FBX file to a Trainzmesh file so the mesh table will need to identify each mesh as such. Click on the Export FBX button at the top right. Enter the target FBX file as “mybox_lod0.fbx”. At the top of the window, make sure the selected target folder is your project export folder. Leave any other options at their default values.

Since the trainzmesh files already exist no FBX conversion is carried out.The material used for this asset was created within Substance Painter which is a powerful PBR material and texture creation tool. If you delete the FBX files, then you will need to commit the asset again. The FBX files will also be present so you may want to delete those if you are ready to upload your asset to the DLS or elsewhere. Assuming the commit is error free, open the asset for edit in explorer and see what Trainz has created.The trainzmesh files should be as described above. The commit process will create suitable files, such as those required for normal maps, but you can provide your own if you have special requirements.Commit the asset by dragging the folder onto CM. See the config.txt in the project folder.You can provide your own texture.txt files (advisable) or let the commit process create them for you.

You can do this per mesh by using the triangulate command (Ctrl T) in mesh edit mode. Make sure you triangulate (convert to three sided polygons) before export. There are also low cost addons that can bake PBR textures to image files for use as described in this tutorial.If you are interest in animation for Blender 2.8, see this page. There are many video tutorials on the Internet that can assist with the preparation of PBR materials.

Apply any scaling before export.It appears that FBX does not support double sided meshes so you will need to create a metadata file as described at FBX file format#Mesh Metadata Files. Unapplied mesh scaling can cause issues including island distortment in the UV editor. Trainz doesn't seem to like more than one UV map. Make sure you only have one UV map per mesh.

See Asset_Validation.Warning: T16080. Errors or warnings starting with VE are generated by Trainz. You cannot have the same material for single sided and double sided meshes.Errors, Warnings and other Issues FBX to Trainzmesh Conversion Warnings and ErrorsErrors and warnings starting with a T, such as T16128, are errors ouput by the ASSIMP converter and are not output by the Trainz FBX importer.

Blender Export Object With Texture