# There is a bug in examples webgpu/compute rain

**URL:** <https://discourse.threejs.org/t/there-is-a-bug-in-examples-webgpu-compute-rain/59168>\
**Category:** Questions\
**Tags:** webgpu\
**Created:** [December 13, 2023, 3:06am UTC](https://discourse.threejs.org/t/there-is-a-bug-in-examples-webgpu-compute-rain/59168 "2023-12-13T03:06:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MrYang614](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/mryang614/32/34021_2.png) [@MrYang614](https://discourse.threejs.org/u/MrYang614)\
**Post date:** [December 13, 2023, 3:06am UTC](https://discourse.threejs.org/t/there-is-a-bug-in-examples-webgpu-compute-rain/59168/1 "2023-12-13T03:06:45Z")

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show wrong(or opposite) position when i am moving the collision box  
[three.js examples (threejs.org)](https://threejs.org/examples/?q=compute#webgpu_compute_particles_rain)

 ![微信图片_20231213110536](https://canada1.discourse-cdn.com/flex035/uploads/threejs/original/3X/3/a/3a34e0a352680ec27fc3be742dcb28b8a32f1b70.jpeg)

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**Author:** ![Mugen87](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/mugen87/32/5645_2.png) [@Mugen87](https://discourse.threejs.org/u/Mugen87)\
**Post date:** [December 13, 2023, 9:43am UTC](https://discourse.threejs.org/t/there-is-a-bug-in-examples-webgpu-compute-rain/59168/2 "2023-12-13T09:43:07Z")

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This has already been fixed on dev:

[https://rawcdn.githack.com/mrdoob/three.js/dev/examples/webgpu\_compute\_particles\_rain.html](https://rawcdn.githack.com/mrdoob/three.js/dev/examples/webgpu_compute_particles_rain.html)

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<div class="post-metadata">

**Author:** ![MrYang614](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/mryang614/32/34021_2.png) [@MrYang614](https://discourse.threejs.org/u/MrYang614)\
**Post date:** [December 13, 2023, 10:06am UTC](https://discourse.threejs.org/t/there-is-a-bug-in-examples-webgpu-compute-rain/59168/3 "2023-12-13T10:06:38Z")

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thanks. i see