# Issue with a spotlight **URL:** \ **Category:** Questions\ **Created:** [April 11, 2023, 3:26pm UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797 "2023-04-11T15:26:43Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![bvaisman](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bvaisman/32/20835_2.png) [@bvaisman](https://forum.babylonjs.com/u/bvaisman)\ **Post date:** [April 11, 2023, 3:26pm UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/1 "2023-04-11T15:26:43Z")
Hi everybody, I have 2 issues with my spotlight 1 - Why is the light so shiny on the ground and so dull on the table ? 2 - Why can’t I see the shadows of the table on the ground ? Here’s the PG : > **[Babylon.js Playground](https://playground.babylonjs.com/#LHA8BA%232)** > > Babylon.js playground is a live editor for Babylon.js WebGL 3D scenes If anybody could help… Thanks in advance, Boris ---
**Author:** ![srzerbetto](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/srzerbetto/32/20941_2.png) [@srzerbetto](https://forum.babylonjs.com/u/srzerbetto)\ **Post date:** [April 11, 2023, 4:55pm UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/2 "2023-04-11T16:55:42Z")
Hey @bvaisman , how are you doing? For the shadows on the ground. The correct way to add you object to the ShadowGenerator would be to use the [addShadowCaster](https://doc.babylonjs.com/playground?type=code&q=addShadowCaster) helper function. Your bias values also seemed to be wrong (I’m not sure why), but removing it seems to make the scene look right. [Babylon.js Playground (babylonjs.com)](https://playground.babylonjs.com/#LHA8BA#3) ---
**Author:** ![Dok11](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/dok11/32/25754_2.png) [@Dok11](https://forum.babylonjs.com/u/Dok11)\ **Post date:** [April 11, 2023, 4:56pm UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/3 "2023-04-11T16:56:13Z")
1. You have a point light under the table 2. Add all meshes to generator: ```auto data.meshes.forEach(x => { shadowGenerator.getShadowMap().renderList.push(x); }); ``` And tune bias ![image](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/5/4/540a12e0f174c448822eca75f9a9ad7a8d9fa2a8.jpeg) ---
**Author:** ![bvaisman](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bvaisman/32/20835_2.png) [@bvaisman](https://forum.babylonjs.com/u/bvaisman)\ **Post date:** [April 12, 2023, 7:41am UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/4 "2023-04-12T07:41:58Z")
Ok @srzerbetto , you’ve found the solution, thanks very much . But i don’t understand why _the shadowGenerator.addShadowCaster(mesh, true)_ function works and the _shadowGenerator.getShadowMap().renderList.push(mesh)_ does not. When can we use the first and the second ? ---
**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:** [April 12, 2023, 9:12am UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/5 "2023-04-12T09:12:55Z")
It’s the same thing, but make sure that `shadowGenerator.getShadowMap().renderList` is not `null` (initialize it with an empty array). ---
**Author:** ![bvaisman](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bvaisman/32/20835_2.png) [@bvaisman](https://forum.babylonjs.com/u/bvaisman)\ **Post date:** [April 12, 2023, 9:19am UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/6 "2023-04-12T09:19:45Z")
No, i’m sorry @Evgeni_Popov but it does not work, even if I initialise my array. My PG with _shadowGenerator.getShadowMap().renderList.push(mesh)_ > **[Babylon.js Playground](https://playground.babylonjs.com/#LHA8BA%235)** > > Babylon.js playground is a live editor for Babylon.js WebGL 3D scenes My PG with _shadowGenerator.addShadowCaster(mesh, true)_ > **[Babylon.js Playground](https://playground.babylonjs.com/#LHA8BA%236)** > > Babylon.js playground is a live editor for Babylon.js WebGL 3D scenes Anyway, the solution has been found but maybe it’s a bug with the spotlights. I always use the first syntax which works with directional lights and i thought it worked the same way with spotlights. ---
**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:** [April 12, 2023, 9:44am UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/7 "2023-04-12T09:44:43Z")
The difference is that you pass `true` to `addShadowCaster`, which will also add all descendants of the mesh to the array, whereas `push(mesh)` only adds `mesh` to the array. An equivalent of `addShadowCaster(mesg, true)` would be something like `shadowGenerator.getShadowMap().renderList.push(mesh, ...mesh.getChildMeshes(false))`. ---
**Author:** ![bvaisman](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/bvaisman/32/20835_2.png) [@bvaisman](https://forum.babylonjs.com/u/bvaisman)\ **Post date:** [April 12, 2023, 11:54am UTC](https://forum.babylonjs.com/t/issue-with-a-spotlight/39797/8 "2023-04-12T11:54:21Z")
Ok, you’re right, that was not exactly the same code…