# Model, material and texture import bug **URL:** \ **Category:** Rendering\ **Tags:** Mobile, unreal-engine, bug-report, Rendering, Lighting, question\ **Created:** [September 8, 2015, 7:41am UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424 "2015-09-08T07:41:37Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![anonymous\_user\_6a49592c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6a49592c](https://forums.unrealengine.com/u/anonymous_user_6a49592c)\ **Post date:** [September 8, 2015, 7:41am UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/1 "2015-09-08T07:41:37Z")
What are the exact settings to display content smoothly on the Retina Screen. We’ve used some guides that are available on the Unreal website to configure textures and materials to be rendered properly on Mobile Devices. Still lots of textures are not displayed correctly. Moreover same materials are illustrated okay on one surface, but not good (not shown) on others. Also there might be some issues when we have lighting reflection or some surface materials interfering with each other. As a result we have quite many illustration bugs. ---
**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\ **Post date:** [September 8, 2015, 1:47pm UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/2 "2015-09-08T13:47:41Z")
Hi Julia, Would you mind posting some screenshots of the issues you’re seeing in the Editor vs what is being rendered on mobile, or any screenshots that you think would be useful? It would be helpful to see what you’re seeing on your end. These may just be setup issues, or it could be a legitimate bug that has already been reported or needs to be. I’m happy to help look into this. I’m sure you’ve already had a look at this, but I wanted to link here in the event you have not. We do have the **[Mobile Game Development](https://docs.unrealengine.com/latest/INT/Platforms/Mobile/)** page in the documentation that has areas broken down for Materials, Lighting, etc that need to be set specifically for Mobile devices to work correctly. Let me know, and I’ll continue to look into this for you. Tim ---
**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\ **Post date:** [September 9, 2015, 6:45pm UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/3 "2015-09-09T18:45:15Z")
Hi Julia, I’ve been given your email. I will take a look at the project and files soon. I’ll let you know what I find or if I have any follow-up questions. Thank you! ---
**Author:** ![anonymous\_user\_6a49592c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6a49592c](https://forums.unrealengine.com/u/anonymous_user_6a49592c)\ **Post date:** [September 10, 2015, 10:26am UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/4 "2015-09-10T10:26:37Z")
Hi Tim, thanks a lot! We all are looking forward to receiving your feedback. ---
**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\ **Post date:** [September 14, 2015, 9:27pm UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/5 "2015-09-14T21:27:15Z")
I’ve take a little bit of time to look into the packaged project on iOS and here’s what I’ve got. 1. The stretching texture on the wall was a bug in 4.8 and is no longer occurring in 4.9. This was originally logged with UE-20174. Alternatively, you can disable in the Project Settings \> Rendering \> ‘Support Forward Rendering with Metal (A7 and up devices)’ and this will resolve this issue, but then the doors will no longer render a material. 2. With the Door material, for the moment you can get around this by setting the material Fully Rough in the details panel for the material attributes, or by disconnecting the roughness wire. I simply put a constant of 0.5 here as a test. I’m not sure what’s going on here with that at the moment. ---
**Author:** ![anonymous\_user\_6a49592c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6a49592c](https://forums.unrealengine.com/u/anonymous_user_6a49592c)\ **Post date:** [October 7, 2015, 12:58pm UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/6 "2015-10-07T12:58:44Z")
Hi Tim. Many thanks for the information you’ve provided. We have analyzed it and came up with a few more question that we hope you’d be able to help with. 1. Lighting issues. I’ve attached some screenshots with our lighting settings & some of our scenery. Could you please consult us how to adjust the settings to get the illustration correctly, because having these settings gives some very strange effect to some objects within lit up area? I mean that they are shining. 2. Could you please provide us once more with full instructions how to adjust the settings for the following parts: ![61690-lighting_issues4.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/f/8/7f8568cb967dbdbfc408d4f1bc85a4c4463a3f03.png) ---
**Author:** ![anonymous\_user\_6a49592c](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6a49592c](https://forums.unrealengine.com/u/anonymous_user_6a49592c)\ **Post date:** [October 7, 2015, 12:59pm UTC](https://forums.unrealengine.com/t/model-material-and-texture-import-bug/331424/7 "2015-10-07T12:59:17Z")
Hi Tim. Many thanks for the information you’ve provided. We have analyzed it and came up with a few more question that we hope you’d be able to help with. 1. Lighting issues. I’ve attached some screenshots with our lighting settings & some of our scenery. Could you please consult us how to adjust the settings to get the illustration correctly, because having these settings gives some very strange effect to some objects within lit up area? I mean that they are shining. 2. Could you please provide us once more with full instructions how to adjust the settings for the following parts: ![61690-lighting_issues4.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/f/8/7f8568cb967dbdbfc408d4f1bc85a4c4463a3f03.png)