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Thanks for stopping by! I'm not very proficient when it comes to handling OBJ files - can you give me a few more directions? Like a working .OBJ and .MTL file, or a comparison of expected and actual results when using the export? Then I can try to fix it. |
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Thanks for your response! I didn't expect it so fast. Format is purely text based. I guess you will have to read materials from radiant, and parse that into .mtl file. Here is a 1 object sample with one material applied .OBJ: [CODE]# Blender v2.83.2 OBJ File: '' # www.blender.org mtllib sample.mtl g stedoorpanel1_d v 1.000000 1.000000 -1.000000 v 1.000000 -1.000000 -1.000000 v 1.000000 1.000000 1.000000 v 1.000000 -1.000000 1.000000 v -1.000000 1.000000 -1.000000 v -1.000000 -1.000000 -1.000000 v -1.000000 1.000000 1.000000 v -1.000000 -1.000000 1.000000 vt 0.625000 0.500000 vt 0.875000 0.500000 vt 0.875000 0.750000 vt 0.625000 0.750000 vt 0.375000 0.750000 vt 0.625000 1.000000 vt 0.375000 1.000000 vt 0.375000 0.000000 vt 0.625000 0.000000 vt 0.625000 0.250000 vt 0.375000 0.250000 vt 0.125000 0.500000 vt 0.375000 0.500000 vt 0.125000 0.750000 vn 0.0000 1.0000 0.0000 vn 0.0000 0.0000 1.0000 vn -1.0000 0.0000 0.0000 vn 0.0000 -1.0000 0.0000 vn 1.0000 0.0000 0.0000 vn 0.0000 0.0000 -1.0000 usemtl Material s off f 1/1/1 5/2/1 7/3/1 3/4/1 f 4/5/2 3/4/2 7/6/2 8/7/2 f 8/8/3 7/9/3 5/10/3 6/11/3 f 6/12/4 2/13/4 4/5/4 8/14/4 f 2/13/5 1/1/5 3/4/5 4/5/5 f 6/11/6 5/10/6 1/1/6 2/13/6 [/CODE] And here is corresponding .MTL file: [CODE] # Blender MTL File: 'None' # Material Count: 1 newmtl Material Ns 323.999994 Ka 1.000000 1.000000 1.000000 Kd 0.800000 0.800000 0.800000 Ks 0.500000 0.500000 0.500000 Ke 0.000000 0.000000 0.000000 Ni 1.450000 d 1.000000 illum 2 map_Kd textures\\base_door\\stedoorpanel1_d.tga map_Kn textures\\base_door\\stedoorpanel1_d map_Ks textures\\base_door\\stedoorpanel1_s.tga [/code] Long story short, map_Kd/Kn/Ks correspond to matching diffuse/normal/specular textures. When this is included, all textures should load automatically. As for inverting UV, that's going to be a lot of numbers I think. I could probably export sample brush from Radiant, fix it in Blender, and then show you final .obj so you can see the differences for yourself. Is there any discord for more real-life communication? |
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Oh I can't edit it now, but obviously instead of "Material", it should actually using corresponding material name. I think in Doom 3 case it's always the color map filename? |
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Thanks for the examples. Anything that I can compare to is helpful. I'm not sure myself right now, but does Doom 3 handle OBJ files? Or are you using some other engine? Don't hold your breath on the fix though, I'm currently tied up in other things, so it might be a while. |
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My final destination is UE4, however once this is implemented, it would literally work with every 3D software like Maya, Blender, Unity, 3DS Max... The current file is fully workable, just requires manual rework of inverting UV and recreating materials. I haven't looked into materials in Radiant, been a while since I really dipped into that, but maybe at the very least it would be possible to put all 'shaders' into a single text file to ease this process? Just text information about material name and textures it's using. Many materials are using filename + suffixes like _d _local _s, but not everything is matching. |
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Possibly related to my experience with the UVs at https://bugs.thedarkmod.com/view.php?id=4099#c7853 |
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The steampowered link you have posted is dead. Do you have a copy of its content? |
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I'm afraid I didn't find anything in the Wayback Machine. But I remember that when I tried loading an OBJ from DR into UVMapper Classic it popped up an offer to fix it automatically, and that was all it took to make it usable in Sculptris's paint mode. Probably the 'message about out of range UV coordinates' mentioned in http://www.render-lab.com/Render-Lab_UV_tut.htm and https://community.foundry.com/discuss/topic/41014/solved-uv-out-of-range-with-uv-mapper?mode=Post&postID=371929 |
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In the current development version. I've adjusted the OBJ exporter to write a MTL file next to it. As soon as I have a pre-release build available, I'll post in the forums (https://forums.thedarkmod.com/index.php?/forum/51-darkradiant-feedback-and-development/), so maybe you might want to set an alert on that subforum to get notified. Thing is, I can not tell at this point if the "map_Kd" paths are meant to be absolute file system paths like C:/temp/texture.png or whether they are meant to be relative to the OBJ file. When importing the OBJ file in Blender, there's the option "Image Search" where Blender tries to locate the mentioned texture files in the folder of the MTL file (including subfolders) - and it's working. Not sure though how Lightwave or others are treating the MTL file. |
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Here's a test model export I created with the current dev build. It contains the models folder as one would expect it in a D3/Q4 mod. |
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I missed the reply. Will try it shortly after new year! |
- Anonymous
