# WorldPosition node output broken on mobile **URL:** \ **Category:** Rendering\ **Tags:** mobile-preview, es2, unreal-engine, iOS, world-position, shader, question\ **Created:** [May 13, 2016, 3:11am UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283 "2016-05-13T03:11:24Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Spoondog](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Spoondog](https://forums.unrealengine.com/u/Spoondog)\ **Post date:** [May 13, 2016, 3:11am UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/1 "2016-05-13T03:11:24Z")
The “WorldPosition (Excluding Material Offsets)” node outputs invalid coordinates in both the mobile previewer and on an iOS device. It appears to just output 0.0. Here is a picture of the example setup in 4.12: ![90408-worldcoords_mat.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/9/c/c/9cc7b1535a5edec649aa3906f3f8bc422f51d9c9.png) And here is a [4.12 Example project][2]. To reproduce: 1. Drop the map and material into a blank 4.12 project. 2. Open WorldCoords\_Bug.umap and run it in the mobile previewer or on an iOS device. 3. Note that the texture appears as a flat color. Here is a comparison vs PC: ![90409-worldcoords_shots.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/4/4/e44a945e9dffa260279f0a89419f6c83e3f282cd.png) Note that if you use “WorldPosition (_Including_ Material Offsets)”, it does output coordinates but they still don’t come out as expected on the device, compared to PC ([link][4]). ---
**Author:** ![anonymous\_user\_6e7b421a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e7b421a](https://forums.unrealengine.com/u/anonymous_user_6e7b421a)\ **Post date:** [May 13, 2016, 2:35pm UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/2 "2016-05-13T14:35:29Z")
Hello Spoondog, Thank you for taking the time to write up this verbose bug report. Fortunately, this issue has been caught and reported already as UE-25532. Once a fix has been made, it will be added to the list of known and fixed issues to the next upcoming major engine release or hotfix. Thank you, ---
**Author:** ![Spoondog](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Spoondog](https://forums.unrealengine.com/u/Spoondog)\ **Post date:** [May 13, 2016, 8:08pm UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/3 "2016-05-13T20:08:36Z")
Ok that’s good to know, thanks. I need this feature for mapping custom drawn shadows to the world, and am intending to release on three platforms in about 2 months, so please consider this “community interest +1” 🙂 ---
**Author:** ![byteparrot](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@byteparrot](https://forums.unrealengine.com/u/byteparrot)\ **Post date:** [June 19, 2016, 4:41pm UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/4 "2016-06-19T16:41:46Z")
Hey guys/girls, is there any update on this issue? We are currently working on a multiplatform project where the materials are applied to a random generated terrain using the absolute world position and because we are also using the material offset quite heavilly I need the position excluding the material offset but like Spoondog said the result is just a flat color on iOS. So is there a workaround for getting the world pos excluding offset or do we have to wait until this is fixed? If we have to wait, when can we expect a fix for this? Best regards, Joey ---
**Author:** ![anonymous\_user\_6e7b421a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e7b421a](https://forums.unrealengine.com/u/anonymous_user_6e7b421a)\ **Post date:** [June 21, 2016, 4:10pm UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/5 "2016-06-21T16:10:40Z")
The issue is still unresolved at the moment, but has been marked to be fixed for an upcoming major engine release. This is all the information I have at this moment. ---
**Author:** ![anonymous\_user\_73fc2e7a](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_73fc2e7a](https://forums.unrealengine.com/u/anonymous_user_73fc2e7a)\ **Post date:** [June 28, 2016, 10:13am UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/6 "2016-06-28T10:13:13Z")
I am also experiencing this issue. Thanks for the update! Community interest +1 😉 ---
**Author:** ![anonymous\_user\_ff95e976](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_ff95e976](https://forums.unrealengine.com/u/anonymous_user_ff95e976)\ **Post date:** [October 26, 2017, 12:36pm UTC](https://forums.unrealengine.com/t/worldposition-node-output-broken-on-mobile/357283/7 "2017-10-26T12:36:22Z")
I am also interested in this issue. The world position is also used in the fog of war, which causes problems on the mobile.