# PBR Material: how to make roughness work as in Blender 2.80?

**URL:** <https://forum.babylonjs.com/t/pbr-material-how-to-make-roughness-work-as-in-blender-2-80/5636>\
**Category:** Questions\
**Created:** [September 13, 2019, 4:17pm UTC](https://forum.babylonjs.com/t/pbr-material-how-to-make-roughness-work-as-in-blender-2-80/5636 "2019-09-13T16:17:02Z")\
**Posts on this page:** 1\
**Page:** 2

<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:** [October 31, 2019, 3:49pm UTC](https://forum.babylonjs.com/t/pbr-material-how-to-make-roughness-work-as-in-blender-2-80/5636/21 "2019-10-31T15:49:12Z")

</div>

We definitely would need a repro to better understand what is happening there 🙂

Could you repro in the playground ?

[Previous page](https://forum.babylonjs.com/t/pbr-material-how-to-make-roughness-work-as-in-blender-2-80/5636.md?page=1)