HowTo/Export from Blender using FBX - Revision history

Pcas1986: Update to Blender 3.2 level . Change of test model to one that uses LOD (mesh-table).

2022-06-27T05:59:38Z

Update to Blender 3.2 level . Change of test model to one that uses LOD (mesh-table).

Korvtiger: /* FBX to Trainzmesh Conversion Warnings and Errors */

2022-01-31T20:00:58Z

FBX to Trainzmesh Conversion Warnings and Errors

← Older revision		Revision as of 20:00, 31 January 2022
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	\|-		\|-
	\| style="border:1px solid gray;font-weight:normal;"\|Error, Mesh attached to scene twice; not currently supported		\| style="border:1px solid gray;font-weight:normal;"\|Error, Mesh attached to scene twice; not currently supported
	\| style="border:1px solid gray;font-weight:normal;"\|Caused by having multiple meshes in the FBX that share the same mesh data, which is caused by the duplicate linked operator (copying ~~meshed~~ using Alt-D instead of Shift-D). Make all meshes single user by selecting all meshes, Object>Relations>Make Single User>Object & Data.		\| style="border:1px solid gray;font-weight:normal;"\|Caused by having multiple meshes in the FBX that share the same mesh data, which is caused by the duplicate linked operator (copying objects using Alt-D instead of Shift-D in Blender). Make all meshes single user by selecting all meshes, Object>Relations>Make Single User>Object & Data.
	\|}		\|}



	=Return to Index=		=Return to Index=

Korvtiger at 19:58, 31 January 2022

2022-01-31T19:58:15Z

← Older revision		Revision as of 19:58, 31 January 2022
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	\| style="border:1px solid gray;font-weight:normal;"\|Try triangulating the mesh, or meshes, using Ctrl T (quads to tris). If the error continues, try using the Triangulate modifier. This problem is known to occur when using modifiers that may produce ngons on export.		\| style="border:1px solid gray;font-weight:normal;"\|Try triangulating the mesh, or meshes, using Ctrl T (quads to tris). If the error continues, try using the Triangulate modifier. This problem is known to occur when using modifiers that may produce ngons on export.
	\|-		\|-
	\| style="border:1px solid gray;font-weight:normal;"\|Error, Error, T16128: FindInvalidDataProcess fails on mesh uvcoords: All vectors are identical"		\| style="border:1px solid gray;font-weight:normal;"\|Error, Error, T16128: FindInvalidDataProcess fails on mesh uvcoords: All vectors are identical
	\| style="border:1px solid gray;font-weight:normal;"\|Probably caused by having multiple UV maps for the same mesh. Not sure of the relationship between this error and the "Unable to determine vertex format" error.		\| style="border:1px solid gray;font-weight:normal;"\|Probably caused by having multiple UV maps for the same mesh. Not sure of the relationship between this error and the "Unable to determine vertex format" error.
			\|-
			\| style="border:1px solid gray;font-weight:normal;"\|Error, Mesh attached to scene twice; not currently supported
			\| style="border:1px solid gray;font-weight:normal;"\|Caused by having multiple meshes in the FBX that share the same mesh data, which is caused by the duplicate linked operator (copying meshed using Alt-D instead of Shift-D). Make all meshes single user by selecting all meshes, Object>Relations>Make Single User>Object & Data.
	\|}		\|}

Pcas1986: Update to reflect FBX export configuration in Blender 2.83

2020-07-01T07:04:08Z

Update to reflect FBX export configuration in Blender 2.83

Show changes

Pcas1986: Major rewrite for Blender 2.80

2019-09-01T10:31:18Z

Major rewrite for Blender 2.80

Show changes

Pcas1986: Added some warnings

2019-04-09T22:39:12Z

Added some warnings

← Older revision		Revision as of 22:39, 9 April 2019
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	The trainzmesh files should be as described above. 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. If you delete the FBX files, then you will need to commit the asset again. Since the trainzmesh files already exist no FBX conversion is carried out.		The trainzmesh files should be as described above. 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. If you delete the FBX files, then you will need to commit the asset again. Since the trainzmesh files already exist no FBX conversion is carried out.

			=Errors, Warnings and other Issues=

			==Double Sided Meshes==
			It appears that FBX does not support double sided meshes so you need to create a metadata file as described at [[FBX file format#Mesh Metadata Files]]. Note that this is done per material. i.e. you cannot have the same material for single sided and double sided meshes.

			==FBX to Trainzmesh Conversion Warnings and Errors==
			Errors 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. Errors or warnings starting with VE are generated by Trainz. See [[Asset_Validation]].

			{\| style="border:1px solid gray;border-collapse:collapse;background:white;font-weight:bold; " cellpadding=5px align=left width=70%
			\|- style="font-weight:bold; text-align:center;"
			! width=40% style=" border:1px solid gray;"\|Warning/Error
			! width=60% style=" border:1px solid gray;"\|Help/Explanation
			\|-
			\| style="border:1px solid gray;font-weight:normal;"\|Warning: T16080: ...shading mode not recognised: Phong
			\| style="border:1px solid gray;font-weight:normal;"\| You can ignore this warning.
			\|-
			\| style="border:1px solid gray;font-weight:normal;"\|Warn, T15808: FBX-DOM (TOK_KEY, offset 0xnnnn) source object for connection does not exist
			\| style="border:1px solid gray;font-weight:normal;"\| You can ignore this warning.
			\|-
			\| style="border:1px solid gray;font-weight:normal;"\|Error: Unable to determine vertex format.
			\| style="border:1px solid gray;font-weight:normal;"\|This can be caused by having multiple UV maps for the same mesh. For example, baking a painted mesh to a bake mesh requires two UV maps. Remove old maps before exporting. If you wish to keep those maps, back up the Blender file and then delete the extra maps.
			\|-
			\| style="border:1px solid gray;font-weight:normal;"\|Error, T5268 or T9068, Failed to triangulate polygon (no ear found). Probably not a simple polygon.
			\| style="border:1px solid gray;font-weight:normal;"\|Try triangulating the mesh, or meshes, using Ctrl T (quads to tris). If the error continues, try using the Triangulate modifier. This problem is known to occur when using modifiers that may produce ngons on export.
			\|-
			\| style="border:1px solid gray;font-weight:normal;"\|Error, Error, T16128: FindInvalidDataProcess fails on mesh uvcoords: All vectors are identical"
			\| style="border:1px solid gray;font-weight:normal;"\|Probably caused by having multiple UV maps for the same mesh. Not sure of the relationship between this error and the "Unable to determine vertex format" error.
			\|}

Pcas1986 at 09:12, 9 April 2019

2019-04-09T09:12:05Z

← Older revision		Revision as of 09:12, 9 April 2019
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	=Exporting in Blender 2.80=		=Exporting in Blender 2.80=
	:CAVEAT At the time of writing this tutorial, Blender 2.80 is still a beta version and so this section may require an update.		:CAVEAT At the time of writing this tutorial, Blender 2.80 is still a beta version and so this section may require an update.
	Set up the source files. They can be found here ~~[[File:Mycube 280.zip]]~~		Set up the source files. They can be found here (TBD)
	:* Load the provided Blender sources files into a Trainz asset project folder (directory). The source files include a Blender model file (mycube_280.blend), three images (textures) for the material, the texture description files, and an incomplete config.txt.		:* Load the provided Blender sources files into a Trainz asset project folder (directory). The source files include a Blender model file (mycube_280.blend), three images (textures) for the material, the texture description files, and an incomplete config.txt.
	:* Using a plain ASCII text editor, edit the config.txt and add your own asset kuid.		:* Using a plain ASCII text editor, edit the config.txt and add your own asset kuid.
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	Your material nodes should look like this:		Your material nodes should look like this:
	[[File:B280 material nodes.jpg]]		[[File:B280 material nodes.jpg\|1400px\|left]] {{clear}}

	==Viewing the Model==		==Viewing the Model==
	The Eevee render in Blender does a reasonable render of how the model will look in Trainz (TRS19). Change the main window to 3D Viewport, position the cube view and select the Rendered view option. This icon is identified by the arrow in this image:		The Eevee render in Blender does a reasonable render of how the model will look in Trainz (TRS19). Change the main window to 3D Viewport, position the cube view and select the Rendered view option. This icon is identified by the arrow in this image:
	[[File:B280 Eevee render.jpg]]		[[File:B280 Eevee render.jpg\|1000px\|left]] {{clear}}

	==Exporting to FBX==		==Exporting to FBX==
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	:: Check Selected Objects.		:: Check Selected Objects.
	:: Apply Scalings: Use “FBX All”.		:: Apply Scalings: Use “FBX All”.
	::o Forward: select option “Y Forward”. This automatically changes the Up option to “Z Up” which is correct for Trainz.		:: Forward: select option “Y Forward”. This automatically changes the Up option to “Z Up” which is correct for Trainz.
	:* Check Mesh only since we are not exporting empties or animation.		:* Check Mesh only since we are not exporting empties or animation.
	:* Leave all other options at their default values.		:* Leave all other options at their default values.
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	:* Click on the Export FBX button at the top right. The mesh will be exported.		:* Click on the Export FBX button at the top right. The mesh will be exported.

	[[File:B280 FBX PBRMetal asset FBX export settings.jpg]]		[[File:B280 FBX PBRMetal asset FBX export settings.jpg\|400px\|left]] {{clear}}

	TIP: 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.		TIP: 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.

	==Importing into Trainz==		==Importing into Trainz==

Pcas1986: More updates - not verified

2019-04-09T08:28:02Z

More updates - not verified

@@ Line 100: / Line 100: @@
 Commit the asset by dragging the folder onto CM.  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 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.  If you delete the FBX files, then you will need to commit the asset again.  Since the trainzmesh files already exist no FBX conversion is carried out.
 =Exporting in Blender 2.80=

Pcas1986 at 08:19, 9 April 2019

2019-04-09T08:19:15Z

← Older revision		Revision as of 08:19, 9 April 2019
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	==Loading the Blender Source Model==		==Loading the Blender Source Model==
	:* Start Blender.		:* Start Blender 2.79.
	:* Open the provided Blender source file. The model has one mesh: mycube_lod0 in layer 0.		:* Open the provided Blender source file. The model has one mesh: mycube_lod0 in layer 0.
	:* The model is set up for Blender Render mode.		:* The model is set up for Blender Render mode.

Pcas1986: Major rewrite of this page. More to come.

2019-04-09T07:36:09Z

Major rewrite of this page. More to come.

Show changes