# Strange lightmap rendering

**URL:** <https://forum.babylonjs.com/t/strange-lightmap-rendering/14429>\
**Category:** Questions\
**Tags:** lighting, material\
**Created:** [September 25, 2020, 9:43am UTC](https://forum.babylonjs.com/t/strange-lightmap-rendering/14429 "2020-09-25T09:43:24Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![gldio](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/gldio/32/11288_2.png) [@gldio](https://forum.babylonjs.com/u/gldio)\
**Post date:** [September 25, 2020, 9:43am UTC](https://forum.babylonjs.com/t/strange-lightmap-rendering/14429/1 "2020-09-25T09:43:24Z")

</div>

Hi,  
I’m trying to export a unity scene to babylon with unity export toolkit. it does fantastic job but I have very weird lightmap rendering, at least not what i wanted. Do i miss something?  
btw, I have only one ambient light.

```
amLight = scene.getNodeByName("Ambient Light");
amLight.diffuse = amLight.groundColor = new B.Color3(1, 1, 1);

```

 ![unity-vs-babylonjs-lightmap2](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/2X/5/5a845f744e963810dd55ba6357ef3f21f23e30f4.jpeg)

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<div class="post-metadata">

**Author:** ![Evgeni\_Popov](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/evgeni_popov/32/4432_2.png) [@Evgeni\_Popov](https://forum.babylonjs.com/u/Evgeni_Popov)\
**Post date:** [September 25, 2020, 9:45am UTC](https://forum.babylonjs.com/t/strange-lightmap-rendering/14429/2 "2020-09-25T09:45:54Z")

</div>

Welcome aboard!

Pinging @MackeyK24 who is the master of Unity exporter!

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<div class="post-metadata">

**Author:** ![MackeyK24](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/mackeyk24/32/3741_2.png) [@MackeyK24](https://forum.babylonjs.com/u/MackeyK24)\
**Post date:** [September 30, 2020, 6:20pm UTC](https://forum.babylonjs.com/t/strange-lightmap-rendering/14429/3 "2020-09-30T18:20:44Z")

</div>

It the lightmap textures… The new version of the toolkit fixes this issue 🙂  
Will be out soon… When Babylon 4.2 releases

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<div class="post-metadata">

**Author:** ![gldio](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/gldio/32/11288_2.png) [@gldio](https://forum.babylonjs.com/u/gldio)\
**Post date:** [October 8, 2020, 8:08am UTC](https://forum.babylonjs.com/t/strange-lightmap-rendering/14429/4 "2020-10-08T08:08:31Z")

</div>

very good. thanks for the efforts. Btw, i solved it by changing the exposure of the exr file and then exporting to png.