# \#partial-system **URL:** https://forum.babylonjs.com/tag/partial-system/117.md [Latest](https://forum.babylonjs.com/latest.md) · [Categories](https://forum.babylonjs.com/categories.md) · [Tags](https://forum.babylonjs.com/tags.md) --- ## [ParticleSystem (NPE) AlignAngle block lags 1 frame behind](https://forum.babylonjs.com/t/particlesystem-npe-alignangle-block-lags-1-frame-behind/60709)
**Author:** [@Joe\_Kerr](https://forum.babylonjs.com/u/Joe_Kerr)\ **Replies:** 2\ **Last updated:** [September 29, 2025, 4:43pm UTC](https://forum.babylonjs.com/t/particlesystem-npe-alignangle-block-lags-1-frame-behind/60709 "2025-09-29T16:43:09Z")
Hi everyone, Please see here: Babylon.js Node Particle Editor If you eyeball the center of the prview screen, you will notice that particles spawn with, I guess, the default rotation, and only after 1 frame or so they … --- ## [Case in the SPS document, image resource failure](https://forum.babylonjs.com/t/case-in-the-sps-document-image-resource-failure/52870)
**Author:** [@brightMoon](https://forum.babylonjs.com/u/brightMoon)\ **Replies:** 1\ **Last updated:** [August 19, 2024, 12:16pm UTC](https://forum.babylonjs.com/t/case-in-the-sps-document-image-resource-failure/52870 "2024-08-19T12:16:59Z")
Image resource failure: http://upload.wikimedia.org/wikipedia/en/8/86/Einstein\_tongue.jpg https://doc.babylonjs.com/features/featuresDeepDive/particles/solid\_particle\_system/manage\_sps\_particles --- ## [Particles on white background](https://forum.babylonjs.com/t/particles-on-white-background/50489)
**Author:** [@DavidP](https://forum.babylonjs.com/u/DavidP)\ **Replies:** 2\ **Last updated:** [May 13, 2024, 7:19am UTC](https://forum.babylonjs.com/t/particles-on-white-background/50489 "2024-05-13T07:19:56Z")
Hello, How can I display particles on white background? In this PG, I am attempting to produce red dots particles on white Thank you David --- ## [particularSystem's worldOffset bug](https://forum.babylonjs.com/t/particularsystems-worldoffset-bug/48204)
**Author:** [@AutoBikeMan](https://forum.babylonjs.com/u/AutoBikeMan)\ **Replies:** 1\ **Last updated:** [February 22, 2024, 9:55am UTC](https://forum.babylonjs.com/t/particularsystems-worldoffset-bug/48204 "2024-02-22T09:55:22Z")
After changing the ‘worldOffset’ property of the particle system and saving it as a .babylon file, the particle positions remain unchanged when loading the file again next time --- ## [Emitter rotation (Particles)](https://forum.babylonjs.com/t/emitter-rotation-particles/41819)
**Author:** [@Nawar](https://forum.babylonjs.com/u/Nawar)\ **Replies:** 8\ **Last updated:** [June 23, 2023, 6:40pm UTC](https://forum.babylonjs.com/t/emitter-rotation-particles/41819 "2023-06-23T18:40:14Z")
Hi all! In this example, I’m trying to rotate the particles along the y-axis along with the sphere. But nothing comes of it. How to do it correctly? --- ## [Custom ShaderMaterial for GPUParticleSystem?](https://forum.babylonjs.com/t/custom-shadermaterial-for-gpuparticlesystem/36362)
**Author:** [@Bemuse](https://forum.babylonjs.com/u/Bemuse)\ **Replies:** 15\ **Last updated:** [December 15, 2022, 4:23am UTC](https://forum.babylonjs.com/t/custom-shadermaterial-for-gpuparticlesystem/36362 "2022-12-15T04:23:50Z")
I figure out GPUParticleSystem has ‘VertexShaderName’ property. So i was about to replace that to my shader. But i don’t know how to pass custom uniforms and add attributes to it. Is my idea impossible? Thank you. --- ## [Particle system with mouseover interaction](https://forum.babylonjs.com/t/particle-system-with-mouseover-interaction/34695)
**Author:** [@Seri](https://forum.babylonjs.com/u/Seri)\ **Replies:** 2\ **Last updated:** [November 8, 2022, 1:51pm UTC](https://forum.babylonjs.com/t/particle-system-with-mouseover-interaction/34695 "2022-11-08T13:51:01Z")
Hello, I would like to create a particle system that reacts to mouse movement similar to the demo on this site: Interactive Particles | Codrops (made with three.js) with babylon. The demo I linked uses an image that ha… --- ## [SPS vs instancing](https://forum.babylonjs.com/t/sps-vs-instancing/34250)
**Author:** [@Gerhard\_Meyer](https://forum.babylonjs.com/u/Gerhard_Meyer)\ **Replies:** 5\ **Last updated:** [September 27, 2022, 10:43am UTC](https://forum.babylonjs.com/t/sps-vs-instancing/34250 "2022-09-27T10:43:41Z")
Hi, I am creating a scene where I have repetitive quads scaling over the x-axis. I am trying to use the best performant way of rendering these and tried both instancing and solid particle system. I am making the meshes… --- ## [New method to remove gradient](https://forum.babylonjs.com/t/new-method-to-remove-gradient/33971)
**Author:** [@brightMoon](https://forum.babylonjs.com/u/brightMoon)\ **Replies:** 4\ **Last updated:** [September 17, 2022, 9:27am UTC](https://forum.babylonjs.com/t/new-method-to-remove-gradient/33971 "2022-09-17T09:27:53Z")
If the Gradient value is randomly generated, it cannot be deleted by removeGradient under the condition of infinite non recurring decimals. It is recommended to add subscript deletion items. --- ## [How to setup a mesh restrcition for solid particle emission](https://forum.babylonjs.com/t/how-to-setup-a-mesh-restrcition-for-solid-particle-emission/31946)
**Author:** [@Harvey\_Li](https://forum.babylonjs.com/u/Harvey_Li)\ **Replies:** 5\ **Last updated:** [July 9, 2022, 8:49am UTC](https://forum.babylonjs.com/t/how-to-setup-a-mesh-restrcition-for-solid-particle-emission/31946 "2022-07-09T08:49:28Z")
Hello！ I’m working on a particle animation effect so that particles will emerge within a mesh. Attached below is a work in progress. playground here. It’s almost done, it can emerge as a box mesh, but not more complex o… --- ## [Slowly showing a low lying fog by animating position of emitter](https://forum.babylonjs.com/t/slowly-showing-a-low-lying-fog-by-animating-position-of-emitter/28662)
**Author:** [@ajp](https://forum.babylonjs.com/u/ajp)\ **Replies:** 3\ **Last updated:** [March 23, 2022, 9:32pm UTC](https://forum.babylonjs.com/t/slowly-showing-a-low-lying-fog-by-animating-position-of-emitter/28662 "2022-03-23T21:32:51Z")
Based of this awesome answer I am trying to get a low lying fog to smoothly move up above the ground. I can’t yet get it to move with the emitter and I suspect it’s a complex intersection of settings like emitBox, minLi…