{"record":{"id":"68a389e8de8139c9","repo":"BabylonJS/Babylon.js","slug":"could-not-load-a-native-texture","errorCode":null,"errorMessage":"Could not load a native texture.","messagePattern":"Could not load a native texture\\.","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"packages/dev/core/src/Engines/thinNativeEngine.pure.ts","lineNumber":2072,"sourceCode":"                    () => {\r\n                        texture.baseWidth = this._engine.getTextureWidth(underlyingResource);\r\n                        texture.baseHeight = this._engine.getTextureHeight(underlyingResource);\r\n                        texture.width = texture.baseWidth;\r\n                        texture.height = texture.baseHeight;\r\n                        texture.isReady = true;\r\n\r\n                        const filter = getNativeSamplingMode(samplingMode);\r\n                        this._setTextureSampling(underlyingResource, filter);\r\n\r\n                        if (scene) {\r\n                            scene.removePendingData(texture);\r\n                        }\r\n\r\n                        texture.onLoadedObservable.notifyObservers(texture);\r\n                        texture.onLoadedObservable.clear();\r\n                    },\r\n                    () => {\r\n                        throw new Error(\"Could not load a native texture.\");\r\n                    }\r\n                );\r\n            };\r\n\r\n            if (fromData && buffer) {\r\n                if (buffer instanceof ArrayBuffer) {\r\n                    onload(new Uint8Array(buffer));\r\n                } else if (ArrayBuffer.isView(buffer)) {\r\n                    onload(buffer);\r\n                } else if (typeof buffer === \"string\") {\r\n                    onload(new Uint8Array(DecodeBase64UrlToBinary(buffer)));\r\n                } else {\r\n                    throw new Error(\"Unsupported buffer type\");\r\n                }\r\n            } else {\r\n                if (isBase64) {\r\n                    onload(new Uint8Array(DecodeBase64UrlToBinary(url)));\r\n                } else {\r","sourceCodeStart":2054,"sourceCodeEnd":2090,"githubUrl":"https://github.com/BabylonJS/Babylon.js/blob/0592b347b8a4ee0236089ea86a749cacfdb266d8/packages/dev/core/src/Engines/thinNativeEngine.pure.ts#L2054-L2090","documentation":"After decoding image data, ThinNativeEngine hands the bytes to the native side and observes completion via a promise/callback pair; the rejection callback throws this error, meaning the native engine failed to upload/decode the texture into a bgfx-backed native texture.","triggerScenarios":"engine.createTexture with fromData+buffer or a URL/binary whose data the native decoder rejects (corrupt file, unsupported encoding, empty buffer), triggering the load failure callback at line 2072.","commonSituations":"A texture URL returns HTML/404 body instead of image bytes; a base64 data string decodes to invalid image data; native image decoding lacks a codec present in the browser build.","solutions":["Verify the URL/buffer actually contains valid image bytes (log buffer length and magic bytes before createTexture).","Convert the asset to a widely supported format (PNG/JPG) and retry.","Ensure the NativeEngine runtime includes the needed image codecs (e.g. basis/astc support) for your target platform."],"exampleFix":"// before\nconst tex = engine.createTexture(resp.url, false, () => {}, () => {}); // url served 404 HTML\n\n// after\nconst res = await fetch(resp.url);\nif (!res.ok || !(await res.arrayBuffer()).byteLength) throw new Error(\"bad texture url\");\nconst tex = engine.createTexture(resp.url, false, () => {}, (msg, ex) => console.error(msg, ex));","handlingStrategy":"try-catch","validationCode":"const res = await fetch(url);\nconst buf = await res.arrayBuffer();\nif (!res.ok || buf.byteLength === 0) throw new Error(`Invalid texture source: ${url}`);","typeGuard":"const looksLikeImage = (buf: ArrayBuffer): boolean => {\n  const b = new Uint8Array(buf, 0, 4);\n  return (b[0] === 0x89 && b[1] === 0x50) || (b[0] === 0xff && b[1] === 0xd8) || (b[0] === 0x47 && b[1] === 0x49);\n};","tryCatchPattern":"engine.createTexture(url, false, false, scene, THREE_CONSTANTS.TRILINEAR, onLoad, (msg, ex) => {\n  console.error(\"Native texture load failed:\", msg, ex);\n  fallbackTexture(url);\n});","preventionTips":["Validate texture URLs return ok responses with image magic bytes.","Always supply onError callbacks to createTexture rather than relying on sync throws.","Test assets on every target native platform since codecs differ."],"tags":["native","texture-loading","asset-load-failure"],"backgroundTag":"texture-load-failed","analyzedSha":"0592b347b8a4ee0236089ea86a749cacfdb266d8","analyzedAt":"2026-08-30T15:11:20.442Z","schemaVersion":2},"datasetVersion":"2026-08-30T18:17:15.746Z"}