Exporting obj with normalmap creates opacity map in the mtl file instead #36432

New Issue

Reiner Prokein · 2013-08-10T12:53:31+02:00

Reiner Prokein commented

2013-08-10 12:53:31 +02:00

%%%--- Operating System, Graphics card ---

Win7 64 Bit. Nvidia 460 GTX

- Blender version with error, and version that worked ---

r58611

- Short description of error ---

Exporting obj with normalmap creates a opacity map in the mtl file instead

- Steps for others to reproduce the error (preferably based on attached .blend file) ---

Import the obj file called demon. Export it as Obj. Open the mtl file of both files. The first file will have this for the demonmeshmat:

map_Kd demon_tex.png
map_Bump demon_NM.png

The by blender exported material looks a bit different though. No more bump anymore. But an entry for an opacity map. That`s the map_d entry. And the normalmap is now defined as map_Disp. Which is not part of the official obj file specification from what i know. What is map_Disp good for? Displacement?

map_Kd demon_tex.png
map_Disp demon_NM.png
map_d demon_tex.png

Attached the whole dataset. The zifpile contains the original obj file, the written obj file, and the blender scene.

%%%

%%%--- Operating System, Graphics card --- Win7 64 Bit. Nvidia 460 GTX - Blender version with error, and version that worked --- r58611 - Short description of error --- Exporting obj with normalmap creates a opacity map in the mtl file instead - Steps for others to reproduce the error (preferably based on attached .blend file) --- Import the obj file called demon. Export it as Obj. Open the mtl file of both files. The first file will have this for the demonmeshmat: map_Kd demon_tex.png map_Bump demon_NM.png The by blender exported material looks a bit different though. No more bump anymore. But an entry for an opacity map. That`s the map_d entry. And the normalmap is now defined as map_Disp. Which is not part of the official obj file specification from what i know. What is map_Disp good for? Displacement? map_Kd demon_tex.png map_Disp demon_NM.png map_d demon_tex.png Attached the whole dataset. The zifpile contains the original obj file, the written obj file, and the blender scene. %%%

Reiner Prokein commented

2013-08-10 12:53:31 +02:00

Changed status to: 'Open'

Campbell Barton commented

2013-08-21 10:21:44 +02:00

%%%Good find, fixed r4691. of our extensions repo.%%%

Campbell Barton commented

2013-08-21 10:21:44 +02:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2013-08-21 10:21:44 +02:00

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Exporting obj with normalmap creates opacity map in the mtl file instead #36432