# How to set up coordinatesIndex of LightmapTexture in code?

**URL:** <https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198>\
**Category:** Questions\
**Created:** [December 20, 2021, 4:12pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198 "2021-12-20T16:12:43Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![DWork](https://avatars.discourse-cdn.com/v4/letter/d/7993a0/32.png) [@DWork](https://forum.babylonjs.com/u/DWork)\
**Post date:** [December 20, 2021, 4:12pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/1 "2021-12-20T16:12:43Z")

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One lightmaptexture was loaded to pbrmaterial in my code, when i tried to change the corrdinatesIndex, it didn’t work, nothing happend to texture UVs. How to activate this property?

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**Author:** ![Vinc3r](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/vinc3r/32/25340_2.png) [@Vinc3r](https://forum.babylonjs.com/u/Vinc3r)\
**Post date:** [December 20, 2021, 4:19pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/2 "2021-12-20T16:19:59Z")

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We will need more details about your scene to help you, but in the meantime you can check how I did in this scene: [https://playground.babylonjs.com/#ADPQFC#9](https://playground.babylonjs.com/#ADPQFC#9)

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**Author:** ![DWork](https://avatars.discourse-cdn.com/v4/letter/d/7993a0/32.png) [@DWork](https://forum.babylonjs.com/u/DWork)\
**Post date:** [December 20, 2021, 4:33pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/3 "2021-12-20T16:33:42Z")

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Please check my scene: [https://playground.babylonjs.com/#ADPQFC#116](https://playground.babylonjs.com/#ADPQFC#116)

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**Author:** ![Vinc3r](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/vinc3r/32/25340_2.png) [@Vinc3r](https://forum.babylonjs.com/u/Vinc3r)\
**Post date:** [December 20, 2021, 4:47pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/4 "2021-12-20T16:47:02Z")

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Hmm I don’t understand where the issue is 😲  
Here I tried to access coordinatesIndex through materials, and also just switching from 0 to 1 ('cause meshes in this playground only have 2 UV chans) but it doesn’t fix the thing:  
[https://playground.babylonjs.com/#ADPQFC#117](https://playground.babylonjs.com/#ADPQFC#117)

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**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\
**Post date:** [December 20, 2021, 4:53pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/5 "2021-12-20T16:53:46Z")

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The coordinate index is currently not smthg dynamic: [https://playground.babylonjs.com/#ADPQFC#118](https://playground.babylonjs.com/#ADPQFC#118)

let me take a look if it is easy to address but as it changes pretty much never in code I all go for perf first

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**Author:** ![Vinc3r](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/vinc3r/32/25340_2.png) [@Vinc3r](https://forum.babylonjs.com/u/Vinc3r)\
**Post date:** [December 20, 2021, 4:54pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/6 "2021-12-20T16:54:50Z")

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OK, I was just succeeded by… cloning the texture, but not sure if it’s good for VRAM 😅 [https://playground.babylonjs.com/#ADPQFC#119](https://playground.babylonjs.com/#ADPQFC#119)

[edit] fixed using sebavan dirty trick 🙂 [https://playground.babylonjs.com/#ADPQFC#120](https://playground.babylonjs.com/#ADPQFC#120)

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<div class="post-metadata">

**Author:** ![DWork](https://avatars.discourse-cdn.com/v4/letter/d/7993a0/32.png) [@DWork](https://forum.babylonjs.com/u/DWork)\
**Post date:** [December 20, 2021, 4:55pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/7 "2021-12-20T16:55:25Z")

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Thanks sebavan!

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<div class="post-metadata">

**Author:** ![DWork](https://avatars.discourse-cdn.com/v4/letter/d/7993a0/32.png) [@DWork](https://forum.babylonjs.com/u/DWork)\
**Post date:** [December 20, 2021, 4:58pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/8 "2021-12-20T16:58:09Z")

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that’s a good way, just need to dipose the last texture

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<div class="post-metadata">

**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\
**Post date:** [December 20, 2021, 5:04pm UTC](https://forum.babylonjs.com/t/how-to-set-up-coordinatesindex-of-lightmaptexture-in-code/26198/9 "2021-12-20T17:04:11Z")

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nw it will be fixed in the next nightly in about 1 hour