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- {"ast":null,"code":"import { Vector3, Quaternion, Matrix, TmpVectors } from \"@babylonjs/core/Maths/math.vector.js\";\nimport { GLTFLoader, ArrayItem } from \"../glTFLoader.js\";\nimport \"@babylonjs/core/Meshes/thinInstanceMesh.js\";\nconst NAME = \"EXT_mesh_gpu_instancing\";\n/**\n * [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Vendor/EXT_mesh_gpu_instancing/README.md)\n * [Playground Sample](https://playground.babylonjs.com/#QFIGLW#9)\n */\n// eslint-disable-next-line @typescript-eslint/naming-convention\nexport class EXT_mesh_gpu_instancing {\n /**\n * @internal\n */\n constructor(loader) {\n /**\n * The name of this extension.\n */\n this.name = NAME;\n this._loader = loader;\n this.enabled = this._loader.isExtensionUsed(NAME);\n }\n /** @internal */\n dispose() {\n this._loader = null;\n }\n /**\n * @internal\n */\n loadNodeAsync(context, node, assign) {\n return GLTFLoader.LoadExtensionAsync(context, node, this.name, (extensionContext, extension) => {\n this._loader._disableInstancedMesh++;\n const promise = this._loader.loadNodeAsync(`/nodes/${node.index}`, node, assign);\n this._loader._disableInstancedMesh--;\n if (!node._primitiveBabylonMeshes) {\n return promise;\n }\n const promises = new Array();\n let instanceCount = 0;\n const loadAttribute = attribute => {\n if (extension.attributes[attribute] == undefined) {\n promises.push(Promise.resolve(null));\n return;\n }\n const accessor = ArrayItem.Get(`${extensionContext}/attributes/${attribute}`, this._loader.gltf.accessors, extension.attributes[attribute]);\n promises.push(this._loader._loadFloatAccessorAsync(`/accessors/${accessor.bufferView}`, accessor));\n if (instanceCount === 0) {\n instanceCount = accessor.count;\n } else if (instanceCount !== accessor.count) {\n throw new Error(`${extensionContext}/attributes: Instance buffer accessors do not have the same count.`);\n }\n };\n loadAttribute(\"TRANSLATION\");\n loadAttribute(\"ROTATION\");\n loadAttribute(\"SCALE\");\n return promise.then(babylonTransformNode => {\n return Promise.all(promises).then(([translationBuffer, rotationBuffer, scaleBuffer]) => {\n const matrices = new Float32Array(instanceCount * 16);\n TmpVectors.Vector3[0].copyFromFloats(0, 0, 0); // translation\n TmpVectors.Quaternion[0].copyFromFloats(0, 0, 0, 1); // rotation\n TmpVectors.Vector3[1].copyFromFloats(1, 1, 1); // scale\n for (let i = 0; i < instanceCount; ++i) {\n translationBuffer && Vector3.FromArrayToRef(translationBuffer, i * 3, TmpVectors.Vector3[0]);\n rotationBuffer && Quaternion.FromArrayToRef(rotationBuffer, i * 4, TmpVectors.Quaternion[0]);\n scaleBuffer && Vector3.FromArrayToRef(scaleBuffer, i * 3, TmpVectors.Vector3[1]);\n Matrix.ComposeToRef(TmpVectors.Vector3[1], TmpVectors.Quaternion[0], TmpVectors.Vector3[0], TmpVectors.Matrix[0]);\n TmpVectors.Matrix[0].copyToArray(matrices, i * 16);\n }\n for (const babylonMesh of node._primitiveBabylonMeshes) {\n babylonMesh.thinInstanceSetBuffer(\"matrix\", matrices, 16, true);\n }\n return babylonTransformNode;\n });\n });\n });\n }\n}\nGLTFLoader.RegisterExtension(NAME, loader => new EXT_mesh_gpu_instancing(loader));","map":{"version":3,"names":["Vector3","Quaternion","Matrix","TmpVectors","GLTFLoader","ArrayItem","NAME","EXT_mesh_gpu_instancing","constructor","loader","name","_loader","enabled","isExtensionUsed","dispose","loadNodeAsync","context","node","assign","LoadExtensionAsync","extensionContext","extension","_disableInstancedMesh","promise","index","_primitiveBabylonMeshes","promises","Array","instanceCount","loadAttribute","attribute","attributes","undefined","push","Promise","resolve","accessor","Get","gltf","accessors","_loadFloatAccessorAsync","bufferView","count","Error","then","babylonTransformNode","all","translationBuffer","rotationBuffer","scaleBuffer","matrices","Float32Array","copyFromFloats","i","FromArrayToRef","ComposeToRef","copyToArray","babylonMesh","thinInstanceSetBuffer","RegisterExtension"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/loaders/glTF/2.0/Extensions/EXT_mesh_gpu_instancing.js"],"sourcesContent":["import { Vector3, Quaternion, Matrix, TmpVectors } from \"@babylonjs/core/Maths/math.vector.js\";\nimport { GLTFLoader, ArrayItem } from \"../glTFLoader.js\";\nimport \"@babylonjs/core/Meshes/thinInstanceMesh.js\";\nconst NAME = \"EXT_mesh_gpu_instancing\";\n/**\n * [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Vendor/EXT_mesh_gpu_instancing/README.md)\n * [Playground Sample](https://playground.babylonjs.com/#QFIGLW#9)\n */\n// eslint-disable-next-line @typescript-eslint/naming-convention\nexport class EXT_mesh_gpu_instancing {\n /**\n * @internal\n */\n constructor(loader) {\n /**\n * The name of this extension.\n */\n this.name = NAME;\n this._loader = loader;\n this.enabled = this._loader.isExtensionUsed(NAME);\n }\n /** @internal */\n dispose() {\n this._loader = null;\n }\n /**\n * @internal\n */\n loadNodeAsync(context, node, assign) {\n return GLTFLoader.LoadExtensionAsync(context, node, this.name, (extensionContext, extension) => {\n this._loader._disableInstancedMesh++;\n const promise = this._loader.loadNodeAsync(`/nodes/${node.index}`, node, assign);\n this._loader._disableInstancedMesh--;\n if (!node._primitiveBabylonMeshes) {\n return promise;\n }\n const promises = new Array();\n let instanceCount = 0;\n const loadAttribute = (attribute) => {\n if (extension.attributes[attribute] == undefined) {\n promises.push(Promise.resolve(null));\n return;\n }\n const accessor = ArrayItem.Get(`${extensionContext}/attributes/${attribute}`, this._loader.gltf.accessors, extension.attributes[attribute]);\n promises.push(this._loader._loadFloatAccessorAsync(`/accessors/${accessor.bufferView}`, accessor));\n if (instanceCount === 0) {\n instanceCount = accessor.count;\n }\n else if (instanceCount !== accessor.count) {\n throw new Error(`${extensionContext}/attributes: Instance buffer accessors do not have the same count.`);\n }\n };\n loadAttribute(\"TRANSLATION\");\n loadAttribute(\"ROTATION\");\n loadAttribute(\"SCALE\");\n return promise.then((babylonTransformNode) => {\n return Promise.all(promises).then(([translationBuffer, rotationBuffer, scaleBuffer]) => {\n const matrices = new Float32Array(instanceCount * 16);\n TmpVectors.Vector3[0].copyFromFloats(0, 0, 0); // translation\n TmpVectors.Quaternion[0].copyFromFloats(0, 0, 0, 1); // rotation\n TmpVectors.Vector3[1].copyFromFloats(1, 1, 1); // scale\n for (let i = 0; i < instanceCount; ++i) {\n translationBuffer && Vector3.FromArrayToRef(translationBuffer, i * 3, TmpVectors.Vector3[0]);\n rotationBuffer && Quaternion.FromArrayToRef(rotationBuffer, i * 4, TmpVectors.Quaternion[0]);\n scaleBuffer && Vector3.FromArrayToRef(scaleBuffer, i * 3, TmpVectors.Vector3[1]);\n Matrix.ComposeToRef(TmpVectors.Vector3[1], TmpVectors.Quaternion[0], TmpVectors.Vector3[0], TmpVectors.Matrix[0]);\n TmpVectors.Matrix[0].copyToArray(matrices, i * 16);\n }\n for (const babylonMesh of node._primitiveBabylonMeshes) {\n babylonMesh.thinInstanceSetBuffer(\"matrix\", matrices, 16, true);\n }\n return babylonTransformNode;\n });\n });\n });\n }\n}\nGLTFLoader.RegisterExtension(NAME, (loader) => new EXT_mesh_gpu_instancing(loader));\n"],"mappings":"AAAA,SAASA,OAAO,EAAEC,UAAU,EAAEC,MAAM,EAAEC,UAAU,QAAQ,sCAAsC;AAC9F,SAASC,UAAU,EAAEC,SAAS,QAAQ,kBAAkB;AACxD,OAAO,4CAA4C;AACnD,MAAMC,IAAI,GAAG,yBAAyB;AACtC;AACA;AACA;AACA;AACA;AACA,OAAO,MAAMC,uBAAuB,CAAC;EACjC;AACJ;AACA;EACIC,WAAWA,CAACC,MAAM,EAAE;IAChB;AACR;AACA;IACQ,IAAI,CAACC,IAAI,GAAGJ,IAAI;IAChB,IAAI,CAACK,OAAO,GAAGF,MAAM;IACrB,IAAI,CAACG,OAAO,GAAG,IAAI,CAACD,OAAO,CAACE,eAAe,CAACP,IAAI,CAAC;EACrD;EACA;EACAQ,OAAOA,CAAA,EAAG;IACN,IAAI,CAACH,OAAO,GAAG,IAAI;EACvB;EACA;AACJ;AACA;EACII,aAAaA,CAACC,OAAO,EAAEC,IAAI,EAAEC,MAAM,EAAE;IACjC,OAAOd,UAAU,CAACe,kBAAkB,CAACH,OAAO,EAAEC,IAAI,EAAE,IAAI,CAACP,IAAI,EAAE,CAACU,gBAAgB,EAAEC,SAAS,KAAK;MAC5F,IAAI,CAACV,OAAO,CAACW,qBAAqB,EAAE;MACpC,MAAMC,OAAO,GAAG,IAAI,CAACZ,OAAO,CAACI,aAAa,CAAC,UAAUE,IAAI,CAACO,KAAK,EAAE,EAAEP,IAAI,EAAEC,MAAM,CAAC;MAChF,IAAI,CAACP,OAAO,CAACW,qBAAqB,EAAE;MACpC,IAAI,CAACL,IAAI,CAACQ,uBAAuB,EAAE;QAC/B,OAAOF,OAAO;MAClB;MACA,MAAMG,QAAQ,GAAG,IAAIC,KAAK,CAAC,CAAC;MAC5B,IAAIC,aAAa,GAAG,CAAC;MACrB,MAAMC,aAAa,GAAIC,SAAS,IAAK;QACjC,IAAIT,SAAS,CAACU,UAAU,CAACD,SAAS,CAAC,IAAIE,SAAS,EAAE;UAC9CN,QAAQ,CAACO,IAAI,CAACC,OAAO,CAACC,OAAO,CAAC,IAAI,CAAC,CAAC;UACpC;QACJ;QACA,MAAMC,QAAQ,GAAG/B,SAAS,CAACgC,GAAG,CAAC,GAAGjB,gBAAgB,eAAeU,SAAS,EAAE,EAAE,IAAI,CAACnB,OAAO,CAAC2B,IAAI,CAACC,SAAS,EAAElB,SAAS,CAACU,UAAU,CAACD,SAAS,CAAC,CAAC;QAC3IJ,QAAQ,CAACO,IAAI,CAAC,IAAI,CAACtB,OAAO,CAAC6B,uBAAuB,CAAC,cAAcJ,QAAQ,CAACK,UAAU,EAAE,EAAEL,QAAQ,CAAC,CAAC;QAClG,IAAIR,aAAa,KAAK,CAAC,EAAE;UACrBA,aAAa,GAAGQ,QAAQ,CAACM,KAAK;QAClC,CAAC,MACI,IAAId,aAAa,KAAKQ,QAAQ,CAACM,KAAK,EAAE;UACvC,MAAM,IAAIC,KAAK,CAAC,GAAGvB,gBAAgB,oEAAoE,CAAC;QAC5G;MACJ,CAAC;MACDS,aAAa,CAAC,aAAa,CAAC;MAC5BA,aAAa,CAAC,UAAU,CAAC;MACzBA,aAAa,CAAC,OAAO,CAAC;MACtB,OAAON,OAAO,CAACqB,IAAI,CAAEC,oBAAoB,IAAK;QAC1C,OAAOX,OAAO,CAACY,GAAG,CAACpB,QAAQ,CAAC,CAACkB,IAAI,CAAC,CAAC,CAACG,iBAAiB,EAAEC,cAAc,EAAEC,WAAW,CAAC,KAAK;UACpF,MAAMC,QAAQ,GAAG,IAAIC,YAAY,CAACvB,aAAa,GAAG,EAAE,CAAC;UACrDzB,UAAU,CAACH,OAAO,CAAC,CAAC,CAAC,CAACoD,cAAc,CAAC,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;UAC/CjD,UAAU,CAACF,UAAU,CAAC,CAAC,CAAC,CAACmD,cAAc,CAAC,CAAC,EAAE,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;UACrDjD,UAAU,CAACH,OAAO,CAAC,CAAC,CAAC,CAACoD,cAAc,CAAC,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;UAC/C,KAAK,IAAIC,CAAC,GAAG,CAAC,EAAEA,CAAC,GAAGzB,aAAa,EAAE,EAAEyB,CAAC,EAAE;YACpCN,iBAAiB,IAAI/C,OAAO,CAACsD,cAAc,CAACP,iBAAiB,EAAEM,CAAC,GAAG,CAAC,EAAElD,UAAU,CAACH,OAAO,CAAC,CAAC,CAAC,CAAC;YAC5FgD,cAAc,IAAI/C,UAAU,CAACqD,cAAc,CAACN,cAAc,EAAEK,CAAC,GAAG,CAAC,EAAElD,UAAU,CAACF,UAAU,CAAC,CAAC,CAAC,CAAC;YAC5FgD,WAAW,IAAIjD,OAAO,CAACsD,cAAc,CAACL,WAAW,EAAEI,CAAC,GAAG,CAAC,EAAElD,UAAU,CAACH,OAAO,CAAC,CAAC,CAAC,CAAC;YAChFE,MAAM,CAACqD,YAAY,CAACpD,UAAU,CAACH,OAAO,CAAC,CAAC,CAAC,EAAEG,UAAU,CAACF,UAAU,CAAC,CAAC,CAAC,EAAEE,UAAU,CAACH,OAAO,CAAC,CAAC,CAAC,EAAEG,UAAU,CAACD,MAAM,CAAC,CAAC,CAAC,CAAC;YACjHC,UAAU,CAACD,MAAM,CAAC,CAAC,CAAC,CAACsD,WAAW,CAACN,QAAQ,EAAEG,CAAC,GAAG,EAAE,CAAC;UACtD;UACA,KAAK,MAAMI,WAAW,IAAIxC,IAAI,CAACQ,uBAAuB,EAAE;YACpDgC,WAAW,CAACC,qBAAqB,CAAC,QAAQ,EAAER,QAAQ,EAAE,EAAE,EAAE,IAAI,CAAC;UACnE;UACA,OAAOL,oBAAoB;QAC/B,CAAC,CAAC;MACN,CAAC,CAAC;IACN,CAAC,CAAC;EACN;AACJ;AACAzC,UAAU,CAACuD,iBAAiB,CAACrD,IAAI,EAAGG,MAAM,IAAK,IAAIF,uBAAuB,CAACE,MAAM,CAAC,CAAC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}
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