Member Narushima Posted October 8, 2017 Member Report Share Posted October 8, 2017 Hi all. I'm wondering if anyone else is experiencing this problem. I've been having it since 4.7. Basically I have a problem with 3d coat refusing to render metal properly, but only in the render room. In the paint room everything looks fine, but when I go into the render room 3d coat decide to give a super dark contrast to even the smallest roughness values. Example, paint room vs render room. I'm running 3d coat in opengl with a Nvidia 1060. 1 Quote Link to comment Share on other sites More sharing options...
Carlosan Posted October 9, 2017 Report Share Posted October 9, 2017 Hi, Have you upgraded to lastest version ? Render room will render what is visible in paint and sculpt room. Do you have visible geometry in sculpt room? Quote Link to comment Share on other sites More sharing options...
Member Narushima Posted October 9, 2017 Author Member Report Share Posted October 9, 2017 (edited) Yes, it's the latest version (4.8.03), but I've had this problem for a white (since I bought the 1060 and installed the 382 nvidia drivers). I have no visible sculpt layers. In fact, I've deleted all the sculpt object and still didn't see any change. So I've done some testing and it only happens when I have shadows enabled. But without shadows the render looks flat. Also, if I set roughness to bellow 70 the problem kind of goes away but then the metal doesn't look metal-ish enough. I've also rendered the model in Unity game engine and it looks pretty much how it does in the paint room. Btw this happens on all my models that use metal smart materials. Edited October 9, 2017 by Narushima 1 Quote Link to comment Share on other sites More sharing options...
Carlosan Posted October 9, 2017 Report Share Posted October 9, 2017 I have reported this issue to developers. please keep in touch with support@3dcoat.com Thx Quote Link to comment Share on other sites More sharing options...
Andrew Shpagin Posted October 9, 2017 Report Share Posted October 9, 2017 Possible reason is lack or resolution of shadowmap. Set 4096 shadowmap size in render settings. Quote Link to comment Share on other sites More sharing options...
Member Narushima Posted October 9, 2017 Author Member Report Share Posted October 9, 2017 Tried it, didn't work. Also installed newest nvidia drivers and tried running it in dx mode, same results. 1 Quote Link to comment Share on other sites More sharing options...
Andrew Shpagin Posted October 9, 2017 Report Share Posted October 9, 2017 At the first glance problem is that shadow can't capture small details (rings) because of map size limits. Try not using directional lights, only ambient one. Try DOF to randomize light a bit. Quote Link to comment Share on other sites More sharing options...
Member Narushima Posted October 9, 2017 Author Member Report Share Posted October 9, 2017 I've tried what you've said, as well as enlarged and shrunk the model and disabled all height map data. I've also made all roughness white and instead transferred all detail to metalness maps, but it didn't change much. 1 Quote Link to comment Share on other sites More sharing options...
Andrew Shpagin Posted October 10, 2017 Report Share Posted October 10, 2017 Maybe something unusual in model structure? For example several very close parallel layers of polygons? You may send me the scene to support to check, I may diagnose immediately. Quote Link to comment Share on other sites More sharing options...
Member Narushima Posted October 11, 2017 Author Member Report Share Posted October 11, 2017 I can't send the scene because it's too big (close to 2GB). But I did a test with a simple cube and the steel material that comes with 3d-coat. Here is the result. First image is from the paint room, second from the render room (with default settings). I've also attached the scene file. Thanks for your help. rendertest.3b 1 Quote Link to comment Share on other sites More sharing options...
Contributor Tony Nemo Posted October 12, 2017 Contributor Report Share Posted October 12, 2017 If you need to get past the size problem, I've used DropBox to make the transfer. Quote Link to comment Share on other sites More sharing options...
carrots Posted October 18, 2017 Report Share Posted October 18, 2017 Narushima, thank you for message. Try to replace these shaders in the folder 3D Coat is installedhttps://drive.google.com/open?id=0B1SDhIuLdbgtMTBobnRvMTc0STQ Quote Link to comment Share on other sites More sharing options...
Member Narushima Posted October 22, 2017 Author Member Report Share Posted October 22, 2017 (edited) On 10/18/2017 at 11:14 AM, carrots said: Narushima, thank you for message. Try to replace these shaders in the folder 3D Coat is installedhttps://drive.google.com/open?id=0B1SDhIuLdbgtMTBobnRvMTc0STQ This got rid of the dark and white spots but it made the metal very shiny. It looks more like silver than steel now. Edited October 22, 2017 by Narushima Quote Link to comment Share on other sites More sharing options...
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