Adding \ to an otherwise working \`EffectComposer\` chain fills large parts of the frame with black. The black regions are not static, they move and change shape as the camera orbits Removing \`\` makes them disappea…
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## [Tips on how to debug / avoid React-Three-Fiber race condition](https://discourse.threejs.org/t/tips-on-how-to-debug-avoid-react-three-fiber-race-condition/91170)
Hey all, I have recently tried to use react-three-fiber and I really enjoy the productivity and simplicity for structuring code. However I ran into a racy bug and I was wondering if anyone had any tips on how to try to d…
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## [reverseDepthBuffer works instead of reversedDepthBuffer](https://discourse.threejs.org/t/reversedepthbuffer-works-instead-of-reverseddepthbuffer/90954)
Docs tell that we should use .reversedDepthBuffer But it doesnt work actually. While the old reverseDepthBuffer flag works instead. Nobody else noticed this? Create overlapping geometry like planes or anything else. S…
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## [CSM bugs with very large objects](https://discourse.threejs.org/t/csm-bugs-with-very-large-objects/88192)
I have a very weird bug with the CSM shadows (using r181) regarding very large objects (building-sized) that seem to go out of the shadows’ FOV, or upon inspecting with CSMHelper, seem to break when crossing a cascade. I…
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## [WebVR unable to start more than once per session](https://discourse.threejs.org/t/webvr-unable-to-start-more-than-once-per-session/86279)
I have an issue with Threejs not loading correctly after the first time I enter and exit vr. Here’s my setup Windows 11; Chrome 139.0.7258.128 Steam VR with PlayStation VR2 App open PSVR2 with PC adapter Threejs Drag…
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## [Exception thrown in StructuredUniform.setValue()](https://discourse.threejs.org/t/exception-thrown-in-structureduniform-setvalue/51269)
I’ve been struggling for the last 6 months or so with a number of lighting bugs. The most serious of these is an exception thrown in StructuredUniform.setValue() with the following stack trace: at StructuredUniform.setV…
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## [Can't Import NodeMaterials R169; Error: Cannot read properties of null (reading 'assign')](https://discourse.threejs.org/t/cant-import-nodematerials-r169-error-cannot-read-properties-of-null-reading-assign/73054)
I have two very basic Node projects. Project A imports and call a simple function from project B. and renders it with WebGPURenderer. //Project B import \* as THREE from 'three/tsl'; export const createPlane = () =\> { …
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## [Three.js – JavaScript 3D Library](https://discourse.threejs.org/t/three-js-javascript-3d-library/74709)
There is a bug on threejs official documentation Something popup like box is overlapping the content.
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## [Bug in shader with Webgl in Three.js on Mac](https://discourse.threejs.org/t/bug-in-shader-with-webgl-in-three-js-on-mac/75461)
Hi! This is a bugreport in the Freeciv 3D version which uses a custom Webgl shader to render the terrain. Some users on Mac are reporting a bug that the terrain shader-material is always black, when the shader for the …
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## [Rendering Bug with Metal (iOs, macOS)](https://discourse.threejs.org/t/rendering-bug-with-metal-ios-macos/29812)
Hello, https://imgur.com/a/vPtIMMi We’ve found this bug when installing iOS 15 beta. It ruins all rendering when post processing is enabled or when transmission is enabled on a model. I assume it appears in other situa…
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## [Transmission material and a reflector cannot be active at the same time](https://discourse.threejs.org/t/transmission-material-and-a-reflector-cannot-be-active-at-the-same-time/66890)
I have a transmission material and a reflector in a scene. When the reflector is active, the refraction of the transmission material disappears. You can see this here if you tilt the model backwards: https://www.body3d…
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## [Transform Controls mouse controls offset when render on useFrame](https://discourse.threejs.org/t/transform-controls-mouse-controls-offset-when-render-on-useframe/66800)
TransformControls on my scene normally works but after I render camera on useFrame hook, TransformControls gizmos become offsetted as you can see in the video. All mouse clicks are offseted. useFrame(({camera, …
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## [VideoTexture stuttered when it played on the android device](https://discourse.threejs.org/t/videotexture-stuttered-when-it-played-on-the-android-device/66448)
VideoTexture stuttered when it played on the android device but the sound of video palyed normally. some android device played with dark screen, no picture. I tested it in the browser that came with wechat, also defaul…
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## [Bug: Chrome Distorts Text When Adding New Elements](https://discourse.threejs.org/t/bug-chrome-distorts-text-when-adding-new-elements/65883)
I’ve encountered a really strange bug, which occurs (at least) in the latest version of Chrome (125.0.6422.77 (Official Build) (x86\_64)). We’ve tested it on multiple computers, and the issue appears on some, but not on o…
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## [I am removing some specific meshes from the model](https://discourse.threejs.org/t/i-am-removing-some-specific-meshes-from-the-model/59650)
I am removing some specific meshes from the model, but it gives error :- Am doing this this.bike.traverse((child) =\> { if (child instanceof THREE.Mesh) { if (child.name === "polySurface1") { child.material.…
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## [Bad performance with prime-run and electron](https://discourse.threejs.org/t/bad-performance-with-prime-run-and-electron/59006)
I’ve created issue on github.com but mrdoob sent me here. Bad performance with prime-run and electron · Issue #27339 · mrdoob/three.js · GitHub Here’s the issue, see no reason to duplicate everything here
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## [New Webxr AR bug camera rotate 90 deg after few seconds of augmented reality](https://discourse.threejs.org/t/new-webxr-ar-bug-camera-rotate-90-deg-after-few-seconds-of-augmented-reality/55291)
Last week my webXr augmebted reality seems have bug not related to my code: After few seconds in AR mode, the camera seems turn left of 90°. Tested on Android, Chrome and different smartphone. Any suggestion to fix it…
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## [GLTFloader works in Chrome but not in Meta Quest 2 Browser](https://discourse.threejs.org/t/gltfloader-works-in-chrome-but-not-in-meta-quest-2-browser/55803)
I recreated the problem in a sample web app here: https://fornaeffe.github.io/vr-playground/ source code here: If I upload a .glb model with \ tag and GLTF loader, it works as expected on Chrome on …
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## [Error in Chrome after updating Oculus: "Unrecognized feature requested: hand-tracking"](https://discourse.threejs.org/t/error-in-chrome-after-updating-oculus-unrecognized-feature-requested-hand-tracking/49410)
I updated Oculus after putting it off for a few months. Now Chrome will not enter VR given a basic ThreeJS WebXR project. I can verify that WebXR works on other sites (not my own, not ThreeJS) as well as XR apps on the d…
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## [Webgl\_read\_float\_buffer example didn't work on Android](https://discourse.threejs.org/t/webgl-read-float-buffer-example-didnt-work-on-android/392)
webgl\_read\_float\_buffer example didn't work on Android using Mozilla.
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## [Staircase artifacts on Macos with standard material and Effectcomposer](https://discourse.threejs.org/t/staircase-artifacts-on-macos-with-standard-material-and-effectcomposer/44539)
I have a render-problem on Apple devices, which i managed to get down to the following minimal example (included OrbitControls just to allow for a better perception of the issue): import { BoxGeometry, DirectionalLi…
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## [Safari bug on VideoTexture repeat](https://discourse.threejs.org/t/safari-bug-on-videotexture-repeat/41091)
Debugging a website I am building and encountered an issue where VideoTexture was appearing to be clamped rather than wrapping on iOS and Mac Safari. On testing standalone, I found that setting needsUpdate = true on anim…
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## [scene.toJSON() producing undefined value somewhere in the object](https://discourse.threejs.org/t/scene-tojson-producing-undefined-value-somewhere-in-the-object/41331)
scene.toJSON is producing an object which apparently contains an undefined value. I am working with automerge to handle real-time versioning in my scene, and automerge does not accept undefined values (null is ok) so it …
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## [THREE.Points() jumping/flickering when used with big X,Y coordinates and OrbitControls](https://discourse.threejs.org/t/three-points-jumping-flickering-when-used-with-big-x-y-coordinates-and-orbitcontrols/38090)
Here is a fiddle with the problem: Rotate the scene and you will see the Point jumping around (while the axisHelper stays at its position, as it should). I noticed that if I use small numbers for X,Y (e.g. 0, 0) I do …
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## [Bug with CSS3DObject and mix-blend-mode CSS](https://discourse.threejs.org/t/bug-with-css3dobject-and-mix-blend-mode-css/36431)
as you can see if we set a mix-blend value most of them make the video pixelated like so:
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## [Bugs in multiple scenes documentation](https://discourse.threejs.org/t/bugs-in-multiple-scenes-documentation/36289)
Hey guys I found a few mistakes in the “Multiple scenes” documentation page at https://threejs.org/manual/?q=multi#en/multiple-scenes grammatical mistake. Needs to be “then” instead of “them”. the renditions shows err…
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## [Opacity bug in materials documentation](https://discourse.threejs.org/t/opacity-bug-in-materials-documentation/35251)
In any of the material docs (example: three.js docs) when you check “transparent” and move the “opacity” slider, nothing changes. I have this issue in all browsers on MacOS. It only starts working when moving the “alph…
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## [BUG: Import statements in example/jsm examples are broken](https://discourse.threejs.org/t/bug-import-statements-in-example-jsm-examples-are-broken/34871)
There is a wired bug where if you use the example/jsm modules as a standalone with/without three.module.js it shows this error: TypeError: Failed to resolve module specifier "three". Relative references must start with …
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## [Video Texture RepeatWrapping bug on ios and safari](https://discourse.threejs.org/t/video-texture-repeatwrapping-bug-on-ios-and-safari/33337)
I create a video texture for wall object. The wall object is wide, so i need repeat the video texture. The code like this const createVideoMesh = ( obj: Object3D\, video: HTMLVideoElement ): Mesh =\> …
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## [Terrible bugs in apk after update threejs (from 129 to 133.1)](https://discourse.threejs.org/t/terrible-bugs-in-apk-after-update-threejs-from-129-to-133-1/30572)
Yesterday I updated to the latest version of threejs. The first thing I noticed is that my model which uses “skinni mesh” and toonMaterial (pst: model loaded wiht MMDLoader) looked different (less cartoonish) and this wa…
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