# Changing opacity of 3d tileset in 2d mode

**URL:** <https://community.cesium.com/t/changing-opacity-of-3d-tileset-in-2d-mode/42704>\
**Category:** CesiumJS\
**Created:** [August 13, 2025, 8:41am UTC](https://community.cesium.com/t/changing-opacity-of-3d-tileset-in-2d-mode/42704 "2025-08-13T08:41:40Z")\
**Posts on this page:** 1\
**Showing post:** 3

<div class="post-metadata">

**Author:** ![mzschwartz5](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/mzschwartz5/32/30089_2.png) [@mzschwartz5](https://community.cesium.com/u/mzschwartz5)\
**Post date:** [August 14, 2025, 3:48pm UTC](https://community.cesium.com/t/changing-opacity-of-3d-tileset-in-2d-mode/42704/3 "2025-08-14T15:48:05Z")

</div>

Hi @Xingjizh1007 ,

Interesting… lots going on here. One thing I notice off the bat is:

```javascript
          translucencyMode: CustomShaderTranslucencyMode.OPAQUE,

```

Which is weird, because your opacity seems to “work” anyway. In fact, making this value `TRANSLUCENT` seems to really make the visualization worse, for some reason. _However_, in 2D mode, setting this to `OPAQUE` seems to prevent the point cloud from rendering at all.

[Sandcastle demo I did my testing in](https://sandcastle.cesium.com/#c=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).

Moreover, there is definitely weird interaction between translucency and eye dome lighting. I found [this existing issue about it](https://github.com/CesiumGS/cesium/issues/8550). And there’s a [similar forum post as well](https://community.cesium.com/t/point-cloud-translucency-and-eye-dome-lighting/38369).

Unfortunately, the best thing I can suggest right now is to plus-one that issue so it gets more attention, and, as always, you can consider [contributing](http://github.com/CesiumGS/cesium/blob/main/Documentation/Contributors/README.md) to Cesium yourself. We appreciate any and all contributions!

Best,  
Matt

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