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L{setParent(e){this.parent&&(this.parent.removeChild(this),this.parent=null),e.addChild(this),this.parent=e}updateWorldMatrix(e,n){this.localMatrix=this.source.getMatrix(),n?m._E.multiply(n,this.localMatrix,this.worldMatrix):m._E.copy(this.localMatrix,this.worldMatrix);let t=this.worldMatrix;for(let r of(e.queue.writeBuffer(this.nodeTransformGPUBuffer,0,t.buffer,t.byteOffset,t.byteLength),this.children))r.updateWorldMatrix(e,t)}traverse(e){for(let n of(e(this),this.children))n.traverse(e)}renderDrawables(e,n){if(void 0!==this.drawables)for(let t of this.drawables)this.skin?t.render(e,[...n,this.nodeTransformBindGroup,this.skin.skinBindGroup]):t.render(e,[...n,this.nodeTransformBindGroup]);for(let r of this.children)r.renderDrawables(e,n)}addChild(e){this.children.push(e)}removeChild(e){let n=this.children.indexOf(e);this.children.splice(n,1)}constructor(e,n,t,r,i){this.test=0,this.name=r||"node_".concat(t.position," ").concat(t.rotation," 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t=er[n];t.setParent(e)})});let ec=[];for(let ed of d.scenes){let ef=new P(n,ei,ed),el=ef.nodes;el.forEach(e=>{let n=er[e];n.setParent(ef.root)}),ec.push(ef)}return{meshes:F,nodes:er,scenes:ec,skins:J}};var k="// Whale.glb Vertex attributes\n// Read in VertexInput from attributes\n// f32x3 f32x3 f32x2 u8x4 f32x4\nstruct VertexOutput {\n @builtin(position) Position: vec4,\n @location(0) normal: vec3,\n @location(1) joints: vec4,\n @location(2) weights: vec4,\n}\n\nstruct CameraUniforms {\n proj_matrix: mat4x4f,\n view_matrix: mat4x4f,\n model_matrix: mat4x4f,\n}\n\nstruct GeneralUniforms {\n render_mode: u32,\n skin_mode: u32,\n}\n\nstruct NodeUniforms {\n world_matrix: mat4x4f,\n}\n\n@group(0) @binding(0) var camera_uniforms: CameraUniforms;\n@group(1) @binding(0) var general_uniforms: GeneralUniforms;\n@group(2) @binding(0) var node_uniforms: NodeUniforms;\n@group(3) @binding(0) var joint_matrices: array>;\n@group(3) @binding(1) var inverse_bind_matrices: array>;\n\n@vertex\nfn vertexMain(input: VertexInput) -> VertexOutput {\n var output: VertexOutput;\n // Compute joint_matrices * inverse_bind_matrices\n let joint0 = joint_matrices[input.joints[0]] * inverse_bind_matrices[input.joints[0]];\n let joint1 = joint_matrices[input.joints[1]] * inverse_bind_matrices[input.joints[1]];\n let joint2 = joint_matrices[input.joints[2]] * inverse_bind_matrices[input.joints[2]];\n let joint3 = joint_matrices[input.joints[3]] * inverse_bind_matrices[input.joints[3]];\n // Compute influence of joint based on weight\n let skin_matrix = \n joint0 * input.weights[0] +\n joint1 * input.weights[1] +\n joint2 * input.weights[2] +\n joint3 * input.weights[3];\n // Position of the vertex relative to our world\n let world_position = vec4(input.position.x, input.position.y, input.position.z, 1.0);\n // Vertex position with model rotation, skinning, and the mesh's node transformation applied.\n let skinned_position = camera_uniforms.model_matrix * skin_matrix * 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D="src/sample/skinnedMesh/main.ts";(s=f||(f={}))[s.NORMAL=0]="NORMAL",s[s.JOINTS=1]="JOINTS",s[s.WEIGHTS=2]="WEIGHTS",(o=l||(l={}))[o.ON=0]="ON",o[o.OFF=1]="OFF";let q=e=>{let n=[0,0,0,0],t=m._E.getScaling(e),r=1/t[0],i=1/t[1],a=1/t[2],s=e[0]*r,o=e[1]*i,u=e[2]*a,c=e[4]*r,d=e[5]*i,f=e[6]*a,l=e[8]*r,p=e[9]*i,h=e[10]*a,g=s+d+h,b=0;return g>0?(b=2*Math.sqrt(g+1),n[3]=.25*b,n[0]=(f-p)/b,n[1]=(l-u)/b,n[2]=(o-c)/b):s>d&&s>h?(b=2*Math.sqrt(1+s-d-h),n[3]=(f-p)/b,n[0]=.25*b,n[1]=(o+c)/b,n[2]=(l+u)/b):d>h?(b=2*Math.sqrt(1+d-s-h),n[3]=(l-u)/b,n[0]=(o+c)/b,n[1]=.25*b,n[2]=(f+p)/b):(b=2*Math.sqrt(1+h-s-d),n[3]=(o-c)/b,n[0]=(l+u)/b,n[1]=(f+p)/b,n[2]=.25*b),n},W=async e=>{let{canvas:n,pageState:t,gui:r}=e,i=await navigator.gpu.requestAdapter(),a=await i.requestDevice();if(!t.active)return;let s=n.getContext("webgpu"),o=window.devicePixelRatio||1;n.width=n.clientWidth*o,n.height=n.clientHeight*o;let u=navigator.gpu.getPreferredCanvasFormat();s.configure({device:a,format:u,alphaMode:"premultiplied"});let c={cameraX:0,cameraY:-5.1,cameraZ:-14.6,objectScale:1,angle:.2,speed:50,object:"Whale",renderMode:"NORMAL",skinMode:"ON"};r.add(c,"object",["Whale","Skinned Grid"]).onChange(()=>{"Skinned Grid"===c.object?(c.cameraX=-10,c.cameraY=0,c.objectScale=1.27):"OFF"===c.skinMode?(c.cameraX=0,c.cameraY=0,c.cameraZ=-11):(c.cameraX=0,c.cameraY=-5.1,c.cameraZ=-14.6)}),r.add(c,"renderMode",["NORMAL","JOINTS","WEIGHTS"]).onChange(()=>{a.queue.writeBuffer(b,0,new Uint32Array([f[c.renderMode]]))}),r.add(c,"skinMode",["ON","OFF"]).onChange(()=>{"Whale"===c.object&&("OFF"===c.skinMode?(c.cameraX=0,c.cameraY=0,c.cameraZ=-11):(c.cameraX=0,c.cameraY=-5.1,c.cameraZ=-14.6)),a.queue.writeBuffer(b,4,new Uint32Array([l[c.skinMode]]))});let d=r.addFolder("Animation Settings");d.add(c,"angle",.05,.5).step(.05),d.add(c,"speed",10,100).step(10);let p=a.createTexture({size:[n.width,n.height],format:"depth24plus",usage:GPUTextureUsage.RENDER_ATTACHMENT}),h=a.createBuffer({size:192,usage:GPUBufferUsage.UNIFORM|GPUBufferUsage.COPY_DST}),g=(0,N.a1)([0],[GPUShaderStage.VERTEX],["buffer"],[{type:"uniform"}],[[{buffer:h}]],"Camera",a),b=a.createBuffer({size:2*Uint32Array.BYTES_PER_ELEMENT,usage:GPUBufferUsage.UNIFORM|GPUBufferUsage.COPY_DST}),y=(0,N.a1)([0],[GPUShaderStage.VERTEX|GPUShaderStage.FRAGMENT],["buffer"],[{type:"uniform"}],[[{buffer:b}]],"General",a),v=a.createBindGroupLayout({label:"NodeUniforms.bindGroupLayout",entries:[{binding:0,buffer:{type:"uniform"},visibility:GPUShaderStage.VERTEX}]}),T=await fetch("../assets/gltf/whale.glb").then(e=>e.arrayBuffer()).then(e=>I(e,a));T.meshes[0].buildRenderPipeline(a,k,k,u,p.format,[g.bindGroupLayout,y.bindGroupLayout,v,C.skinBindGroupLayout]);let G=O(a),w={size:320,usage:GPUBufferUsage.STORAGE|GPUBufferUsage.COPY_DST},x=a.createBuffer(w),S=a.createBuffer(w),B=(0,N.a1)([0,1],[GPUShaderStage.VERTEX,GPUShaderStage.VERTEX],["buffer","buffer"],[{type:"read-only-storage"},{type:"read-only-storage"}],[[{buffer:x},{buffer:S}]],"SkinnedGridJointUniforms",a),E=V(a,u,A.Z,A.Z,[g.bindGroupLayout,y.bindGroupLayout,B.bindGroupLayout]),M=n.width/n.height,U=m._E.perspective(2*Math.PI/5,M,.1,100),L=m._E.ortho(-20,20,-10,10,-100,100),P={colorAttachments:[{view:void 0,clearValue:{r:.3,g:.3,b:.3,a:1},loadOp:"clear",storeOp:"store"}],depthStencilAttachment:{view:p.createView(),depthLoadOp:"clear",depthClearValue:1,depthStoreOp:"store"}},j={colorAttachments:[{view:void 0,clearValue:{r:.3,g:.3,b:.3,a:1},loadOp:"clear",storeOp:"store"}]},_=(e,n)=>{let t=m._E.identity();m._E.rotateZ(t,n,e[0]),m._E.translate(e[0],m.R3.create(4,0,0),t),m._E.rotateZ(t,n,e[1]),m._E.translate(e[1],m.R3.create(4,0,0),t),m._E.rotateZ(t,n,e[2])},F=(e=>{let n=[],t=[];for(let r=0;r<5;r++)n.push(m._E.identity()),t.push(m._E.identity());_(t,0);let i=t.map(e=>m._E.inverse(e));return{transforms:n,bindPoses:t,bindPosesInv:i}})(0);for(let D=0;D{for(let t=0;t(0,p.Tl)({name:"Skinned Mesh",description:"A demonstration of basic gltf loading and mesh skinning, ported from https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html. Mesh data, per vertex attributes, and skin inverseBindMatrices are taken from the json parsed from the binary output of the .glb file. Animations are generated progrmatically, with animated joint matrices updated and passed to shaders per frame via uniform buffers.",init:W,gui:!0,sources:[{name:D.substring(23),contents:"import { makeSample, SampleInit } from '../../components/SampleLayout';\nimport { convertGLBToJSONAndBinary, GLTFSkin } from './glbUtils';\nimport gltfWGSL from './gltf.wgsl';\nimport gridWGSL from './grid.wgsl';\nimport { Mat4, mat4, Quat, vec3 } from 'wgpu-matrix';\nimport { createBindGroupCluster } from '../bitonicSort/utils';\nimport {\n createSkinnedGridBuffers,\n createSkinnedGridRenderPipeline,\n} from './gridUtils';\nimport { gridIndices } from './gridData';\n\nconst MAT4X4_BYTES = 64;\n\ninterface BoneObject {\n transforms: Mat4[];\n bindPoses: Mat4[];\n bindPosesInv: Mat4[];\n}\n\nenum RenderMode {\n NORMAL,\n JOINTS,\n WEIGHTS,\n}\n\nenum SkinMode {\n ON,\n OFF,\n}\n\n// Copied from toji/gl-matrix\nconst getRotation = (mat: Mat4): Quat => {\n // Initialize our output quaternion\n const out = [0, 0, 0, 0];\n // Extract the scaling factor from the final matrix transformation\n // to normalize our rotation;\n const scaling = mat4.getScaling(mat);\n const is1 = 1 / scaling[0];\n const is2 = 1 / scaling[1];\n const is3 = 1 / scaling[2];\n\n // Scale the matrix elements by the scaling factors\n const sm11 = mat[0] * is1;\n const sm12 = mat[1] * is2;\n const sm13 = mat[2] * is3;\n const sm21 = mat[4] * is1;\n const sm22 = mat[5] * is2;\n const sm23 = mat[6] * is3;\n const sm31 = mat[8] * is1;\n const sm32 = mat[9] * is2;\n const sm33 = mat[10] * is3;\n\n // The trace of a square matrix is the sum of its diagonal entries\n // While the matrix trace has many interesting mathematical properties,\n // the primary purpose of the trace is to assess the characteristics of the rotation.\n const trace = sm11 + sm22 + sm33;\n let S = 0;\n\n // If all matrix elements contribute equally to the rotation.\n if (trace > 0) {\n S = Math.sqrt(trace + 1.0) * 2;\n out[3] = 0.25 * S;\n out[0] = (sm23 - sm32) / S;\n out[1] = (sm31 - sm13) / S;\n out[2] = (sm12 - sm21) / S;\n // If the rotation is primarily around the x-axis\n } else if (sm11 > sm22 && sm11 > sm33) {\n S = Math.sqrt(1.0 + sm11 - sm22 - sm33) * 2;\n out[3] = (sm23 - sm32) / S;\n out[0] = 0.25 * S;\n out[1] = (sm12 + sm21) / S;\n out[2] = (sm31 + sm13) / S;\n // If rotation is primarily around the y-axis\n } else if (sm22 > sm33) {\n S = Math.sqrt(1.0 + sm22 - sm11 - sm33) * 2;\n out[3] = (sm31 - sm13) / S;\n out[0] = (sm12 + sm21) / S;\n out[1] = 0.25 * S;\n out[2] = (sm23 + sm32) / S;\n // If the rotation is primarily around the z-axis\n } else {\n S = Math.sqrt(1.0 + sm33 - sm11 - sm22) * 2;\n out[3] = (sm12 - sm21) / S;\n out[0] = (sm31 + sm13) / S;\n out[1] = (sm23 + sm32) / S;\n out[2] = 0.25 * S;\n }\n\n return out;\n};\n\nconst init: SampleInit = async ({ canvas, pageState, gui }) => {\n //Normal setup\n const adapter = await navigator.gpu.requestAdapter();\n const device = await adapter.requestDevice();\n\n if (!pageState.active) return;\n const context = canvas.getContext('webgpu') as GPUCanvasContext;\n\n const devicePixelRatio = window.devicePixelRatio || 1;\n canvas.width = canvas.clientWidth * devicePixelRatio;\n canvas.height = canvas.clientHeight * devicePixelRatio;\n const presentationFormat = navigator.gpu.getPreferredCanvasFormat();\n\n context.configure({\n device,\n format: presentationFormat,\n alphaMode: 'premultiplied',\n });\n\n const settings = {\n cameraX: 0,\n cameraY: -5.1,\n cameraZ: -14.6,\n objectScale: 1,\n angle: 0.2,\n speed: 50,\n object: 'Whale',\n renderMode: 'NORMAL',\n skinMode: 'ON',\n };\n\n // Determine whether we want to render our whale or our skinned grid\n gui.add(settings, 'object', ['Whale', 'Skinned Grid']).onChange(() => {\n if (settings.object === 'Skinned Grid') {\n settings.cameraX = -10;\n settings.cameraY = 0;\n settings.objectScale = 1.27;\n } else {\n if (settings.skinMode === 'OFF') {\n settings.cameraX = 0;\n settings.cameraY = 0;\n settings.cameraZ = -11;\n } else {\n settings.cameraX = 0;\n settings.cameraY = -5.1;\n settings.cameraZ = -14.6;\n }\n }\n });\n\n // Output the mesh normals, its joints, or the weights that influence the movement of the joints\n gui\n .add(settings, 'renderMode', ['NORMAL', 'JOINTS', 'WEIGHTS'])\n .onChange(() => {\n device.queue.writeBuffer(\n generalUniformsBuffer,\n 0,\n new Uint32Array([RenderMode[settings.renderMode]])\n );\n });\n // Determine whether the mesh is static or whether skinning is activated\n gui.add(settings, 'skinMode', ['ON', 'OFF']).onChange(() => {\n if (settings.object === 'Whale') {\n if (settings.skinMode === 'OFF') {\n settings.cameraX = 0;\n settings.cameraY = 0;\n settings.cameraZ = -11;\n } else {\n settings.cameraX = 0;\n settings.cameraY = -5.1;\n settings.cameraZ = -14.6;\n }\n }\n device.queue.writeBuffer(\n generalUniformsBuffer,\n 4,\n new Uint32Array([SkinMode[settings.skinMode]])\n );\n });\n const animFolder = gui.addFolder('Animation Settings');\n animFolder.add(settings, 'angle', 0.05, 0.5).step(0.05);\n animFolder.add(settings, 'speed', 10, 100).step(10);\n\n const depthTexture = device.createTexture({\n size: [canvas.width, canvas.height],\n format: 'depth24plus',\n usage: GPUTextureUsage.RENDER_ATTACHMENT,\n });\n\n const cameraBuffer = device.createBuffer({\n size: MAT4X4_BYTES * 3,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n\n const cameraBGCluster = createBindGroupCluster(\n [0],\n [GPUShaderStage.VERTEX],\n ['buffer'],\n [{ type: 'uniform' }],\n [[{ buffer: cameraBuffer }]],\n 'Camera',\n device\n );\n\n const generalUniformsBuffer = device.createBuffer({\n size: Uint32Array.BYTES_PER_ELEMENT * 2,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n\n const generalUniformsBGCLuster = createBindGroupCluster(\n [0],\n [GPUShaderStage.VERTEX | GPUShaderStage.FRAGMENT],\n ['buffer'],\n [{ type: 'uniform' }],\n [[{ buffer: generalUniformsBuffer }]],\n 'General',\n device\n );\n\n // Same bindGroupLayout as in main file.\n const nodeUniformsBindGroupLayout = device.createBindGroupLayout({\n label: 'NodeUniforms.bindGroupLayout',\n entries: [\n {\n binding: 0,\n buffer: {\n type: 'uniform',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n ],\n });\n\n // Fetch whale resources from the glb file\n const whaleScene = await fetch('../assets/gltf/whale.glb')\n .then((res) => res.arrayBuffer())\n .then((buffer) => convertGLBToJSONAndBinary(buffer, device));\n\n // Builds a render pipeline for our whale mesh\n // Since we are building a lightweight gltf parser around a gltf scene with a known\n // quantity of meshes, we only build a renderPipeline for the singular mesh present\n // within our scene. A more robust gltf parser would loop through all the meshes,\n // cache replicated pipelines, and perform other optimizations.\n whaleScene.meshes[0].buildRenderPipeline(\n device,\n gltfWGSL,\n gltfWGSL,\n presentationFormat,\n depthTexture.format,\n [\n cameraBGCluster.bindGroupLayout,\n generalUniformsBGCLuster.bindGroupLayout,\n nodeUniformsBindGroupLayout,\n GLTFSkin.skinBindGroupLayout,\n ]\n );\n\n // Create skinned grid resources\n const skinnedGridVertexBuffers = createSkinnedGridBuffers(device);\n // Buffer for our uniforms, joints, and inverse bind matrices\n const skinnedGridUniformBufferUsage: GPUBufferDescriptor = {\n // 5 4x4 matrices, one for each bone\n size: MAT4X4_BYTES * 5,\n usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST,\n };\n const skinnedGridJointUniformBuffer = device.createBuffer(\n skinnedGridUniformBufferUsage\n );\n const skinnedGridInverseBindUniformBuffer = device.createBuffer(\n skinnedGridUniformBufferUsage\n );\n const skinnedGridBoneBGCluster = createBindGroupCluster(\n [0, 1],\n [GPUShaderStage.VERTEX, GPUShaderStage.VERTEX],\n ['buffer', 'buffer'],\n [{ type: 'read-only-storage' }, { type: 'read-only-storage' }],\n [\n [\n { buffer: skinnedGridJointUniformBuffer },\n { buffer: skinnedGridInverseBindUniformBuffer },\n ],\n ],\n 'SkinnedGridJointUniforms',\n device\n );\n const skinnedGridPipeline = createSkinnedGridRenderPipeline(\n device,\n presentationFormat,\n gridWGSL,\n gridWGSL,\n [\n cameraBGCluster.bindGroupLayout,\n generalUniformsBGCLuster.bindGroupLayout,\n skinnedGridBoneBGCluster.bindGroupLayout,\n ]\n );\n\n // Global Calc\n const aspect = canvas.width / canvas.height;\n const perspectiveProjection = mat4.perspective(\n (2 * Math.PI) / 5,\n aspect,\n 0.1,\n 100.0\n );\n\n const orthographicProjection = mat4.ortho(-20, 20, -10, 10, -100, 100);\n\n function getProjectionMatrix() {\n if (settings.object !== 'Skinned Grid') {\n return perspectiveProjection as Float32Array;\n }\n return orthographicProjection as Float32Array;\n }\n\n function getViewMatrix() {\n const viewMatrix = mat4.identity();\n if (settings.object === 'Skinned Grid') {\n mat4.translate(\n viewMatrix,\n vec3.fromValues(\n settings.cameraX * settings.objectScale,\n settings.cameraY * settings.objectScale,\n settings.cameraZ\n ),\n viewMatrix\n );\n } else {\n mat4.translate(\n viewMatrix,\n vec3.fromValues(settings.cameraX, settings.cameraY, settings.cameraZ),\n viewMatrix\n );\n }\n return viewMatrix as Float32Array;\n }\n\n function getModelMatrix() {\n const modelMatrix = mat4.identity();\n const scaleVector = vec3.fromValues(\n settings.objectScale,\n settings.objectScale,\n settings.objectScale\n );\n mat4.scale(modelMatrix, scaleVector, modelMatrix);\n if (settings.object === 'Whale') {\n mat4.rotateY(modelMatrix, (Date.now() / 1000) * 0.5, modelMatrix);\n }\n return modelMatrix as Float32Array;\n }\n\n // Pass Descriptor for GLTFs\n const gltfRenderPassDescriptor: GPURenderPassDescriptor = {\n colorAttachments: [\n {\n view: undefined, // Assigned later\n\n clearValue: { r: 0.3, g: 0.3, b: 0.3, a: 1.0 },\n loadOp: 'clear',\n storeOp: 'store',\n },\n ],\n depthStencilAttachment: {\n view: depthTexture.createView(),\n depthLoadOp: 'clear',\n depthClearValue: 1.0,\n depthStoreOp: 'store',\n },\n };\n\n // Pass descriptor for grid with no depth testing\n const skinnedGridRenderPassDescriptor: GPURenderPassDescriptor = {\n colorAttachments: [\n {\n view: undefined, // Assigned later\n\n clearValue: { r: 0.3, g: 0.3, b: 0.3, a: 1.0 },\n loadOp: 'clear',\n storeOp: 'store',\n },\n ],\n };\n\n const animSkinnedGrid = (boneTransforms: Mat4[], angle: number) => {\n const m = mat4.identity();\n mat4.rotateZ(m, angle, boneTransforms[0]);\n mat4.translate(boneTransforms[0], vec3.create(4, 0, 0), m);\n mat4.rotateZ(m, angle, boneTransforms[1]);\n mat4.translate(boneTransforms[1], vec3.create(4, 0, 0), m);\n mat4.rotateZ(m, angle, boneTransforms[2]);\n };\n\n // Create a group of bones\n // Each index associates an actual bone to its transforms, bindPoses, uniforms, etc\n const createBoneCollection = (numBones: number): BoneObject => {\n // Initial bone transformation\n const transforms: Mat4[] = [];\n // Bone bind poses, an extra matrix per joint/bone that represents the starting point\n // of the bone before any transformations are applied\n const bindPoses: Mat4[] = [];\n // Create a transform, bind pose, and inverse bind pose for each bone\n for (let i = 0; i < numBones; i++) {\n transforms.push(mat4.identity());\n bindPoses.push(mat4.identity());\n }\n\n // Get initial bind pose positions\n animSkinnedGrid(bindPoses, 0);\n const bindPosesInv = bindPoses.map((bindPose) => {\n return mat4.inverse(bindPose);\n });\n\n return {\n transforms,\n bindPoses,\n bindPosesInv,\n };\n };\n\n // Create bones of the skinned grid and write the inverse bind positions to\n // the skinned grid's inverse bind matrix array\n const gridBoneCollection = createBoneCollection(5);\n for (let i = 0; i < gridBoneCollection.bindPosesInv.length; i++) {\n device.queue.writeBuffer(\n skinnedGridInverseBindUniformBuffer,\n i * 64,\n gridBoneCollection.bindPosesInv[i] as Float32Array\n );\n }\n\n // A map that maps a joint index to the original matrix transformation of a bone\n const origMatrices = new Map();\n const animWhaleSkin = (skin: GLTFSkin, angle: number) => {\n for (let i = 0; i < skin.joints.length; i++) {\n // Index into the current joint\n const joint = skin.joints[i];\n // If our map does\n if (!origMatrices.has(joint)) {\n origMatrices.set(joint, whaleScene.nodes[joint].source.getMatrix());\n }\n // Get the original position, rotation, and scale of the current joint\n const origMatrix = origMatrices.get(joint);\n let m = mat4.create();\n // Depending on which bone we are accessing, apply a specific rotation to the bone's original\n // transformation to animate it\n if (joint === 1 || joint === 0) {\n m = mat4.rotateY(origMatrix, -angle);\n } else if (joint === 3 || joint === 4) {\n m = mat4.rotateX(origMatrix, joint === 3 ? angle : -angle);\n } else {\n m = mat4.rotateZ(origMatrix, angle);\n }\n // Apply the current transformation to the transform values within the relevant nodes\n // (these nodes, of course, each being nodes that represent joints/bones)\n whaleScene.nodes[joint].source.position = mat4.getTranslation(m);\n whaleScene.nodes[joint].source.scale = mat4.getScaling(m);\n whaleScene.nodes[joint].source.rotation = getRotation(m);\n }\n };\n\n function frame() {\n // Sample is no longer the active page.\n if (!pageState.active) return;\n\n // Calculate camera matrices\n const projectionMatrix = getProjectionMatrix();\n const viewMatrix = getViewMatrix();\n const modelMatrix = getModelMatrix();\n\n // Calculate bone transformation\n const t = (Date.now() / 20000) * settings.speed;\n const angle = Math.sin(t) * settings.angle;\n // Compute Transforms when angle is applied\n animSkinnedGrid(gridBoneCollection.transforms, angle);\n\n // Write to mvp to camera buffer\n device.queue.writeBuffer(\n cameraBuffer,\n 0,\n projectionMatrix.buffer,\n projectionMatrix.byteOffset,\n projectionMatrix.byteLength\n );\n\n device.queue.writeBuffer(\n cameraBuffer,\n 64,\n viewMatrix.buffer,\n viewMatrix.byteOffset,\n viewMatrix.byteLength\n );\n\n device.queue.writeBuffer(\n cameraBuffer,\n 128,\n modelMatrix.buffer,\n modelMatrix.byteOffset,\n modelMatrix.byteLength\n );\n\n // Write to skinned grid bone uniform buffer\n for (let i = 0; i < gridBoneCollection.transforms.length; i++) {\n device.queue.writeBuffer(\n skinnedGridJointUniformBuffer,\n i * 64,\n gridBoneCollection.transforms[i] as Float32Array\n );\n }\n\n // Difference between these two render passes is just the presence of depthTexture\n gltfRenderPassDescriptor.colorAttachments[0].view = context\n .getCurrentTexture()\n .createView();\n\n skinnedGridRenderPassDescriptor.colorAttachments[0].view = context\n .getCurrentTexture()\n .createView();\n\n // Update node matrixes\n for (const scene of whaleScene.scenes) {\n scene.root.updateWorldMatrix(device);\n }\n\n // Updates skins (we index into skins in the renderer, which is not the best approach but hey)\n animWhaleSkin(whaleScene.skins[0], Math.sin(t) * settings.angle);\n // Node 6 should be the only node with a drawable mesh so hopefully this works fine\n whaleScene.skins[0].update(device, 6, whaleScene.nodes);\n\n const commandEncoder = device.createCommandEncoder();\n if (settings.object === 'Whale') {\n const passEncoder = commandEncoder.beginRenderPass(\n gltfRenderPassDescriptor\n );\n for (const scene of whaleScene.scenes) {\n scene.root.renderDrawables(passEncoder, [\n cameraBGCluster.bindGroups[0],\n generalUniformsBGCLuster.bindGroups[0],\n ]);\n }\n passEncoder.end();\n } else {\n // Our skinned grid isn't checking for depth, so we pass it\n // a separate render descriptor that does not take in a depth texture\n const passEncoder = commandEncoder.beginRenderPass(\n skinnedGridRenderPassDescriptor\n );\n passEncoder.setPipeline(skinnedGridPipeline);\n passEncoder.setBindGroup(0, cameraBGCluster.bindGroups[0]);\n passEncoder.setBindGroup(1, generalUniformsBGCLuster.bindGroups[0]);\n passEncoder.setBindGroup(2, skinnedGridBoneBGCluster.bindGroups[0]);\n // Pass in vertex and index buffers generated from our static skinned grid\n // data at ./gridData.ts\n passEncoder.setVertexBuffer(0, skinnedGridVertexBuffers.positions);\n passEncoder.setVertexBuffer(1, skinnedGridVertexBuffers.joints);\n passEncoder.setVertexBuffer(2, skinnedGridVertexBuffers.weights);\n passEncoder.setIndexBuffer(skinnedGridVertexBuffers.indices, 'uint16');\n passEncoder.drawIndexed(gridIndices.length, 1);\n passEncoder.end();\n }\n\n device.queue.submit([commandEncoder.finish()]);\n\n requestAnimationFrame(frame);\n }\n requestAnimationFrame(frame);\n};\n\nconst skinnedMesh: () => JSX.Element = () =>\n makeSample({\n name: 'Skinned Mesh',\n description:\n 'A demonstration of basic gltf loading and mesh skinning, ported from https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html. Mesh data, per vertex attributes, and skin inverseBindMatrices are taken from the json parsed from the binary output of the .glb file. Animations are generated progrmatically, with animated joint matrices updated and passed to shaders per frame via uniform buffers.',\n init,\n gui: true,\n sources: [\n {\n name: __filename.substring(__dirname.length + 1),\n contents: __SOURCE__,\n },\n {\n name: './gridData.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./gridData.ts').default,\n },\n {\n name: './gridUtils.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./gridUtils.ts').default,\n },\n {\n name: './grid.wgsl',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./grid.wgsl').default,\n },\n {\n name: './gltf.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./gltf.ts').default,\n },\n {\n name: './glbUtils.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./glbUtils.ts').default,\n },\n {\n name: './gltf.wgsl',\n contents: gltfWGSL,\n },\n ],\n filename: __filename,\n });\n\nexport default skinnedMesh;\n"},{name:"./gridData.ts",contents:t(6270).Z},{name:"./gridUtils.ts",contents:t(9483).Z},{name:"./grid.wgsl",contents:t(2624).Z},{name:"./gltf.ts",contents:t(6370).Z},{name:"./glbUtils.ts",contents:t(7674).Z},{name:"./gltf.wgsl",contents:k}],filename:D});var z=Y},9147:function(e){e.exports={canvasContainer:"SampleLayout_canvasContainer__zRR_l",sourceFileNav:"SampleLayout_sourceFileNav__ml48P",sourceFileScrollContainer:"SampleLayout_sourceFileScrollContainer__LsNEm",sourceFileContainer:"SampleLayout_sourceFileContainer__3s84x"}},7674:function(e,n){"use strict";n.Z="import { Quat } from 'wgpu-matrix/dist/2.x/quat';\nimport { Accessor, BufferView, GlTf, Scene } from './gltf';\nimport { Mat4, Vec3, mat4 } from 'wgpu-matrix';\n\n//NOTE: GLTF code is not generally extensible to all gltf models\n// Modified from Will Usher code found at this link https://www.willusher.io/graphics/2023/05/16/0-to-gltf-first-mesh\n\n// Associates the mode paramete of a gltf primitive object with the primitive's intended render mode\nenum GLTFRenderMode {\n POINTS = 0,\n LINE = 1,\n LINE_LOOP = 2,\n LINE_STRIP = 3,\n TRIANGLES = 4,\n TRIANGLE_STRIP = 5,\n TRIANGLE_FAN = 6,\n}\n\n// Determines how to interpret each element of the structure that is accessed from our accessor\nenum GLTFDataComponentType {\n BYTE = 5120,\n UNSIGNED_BYTE = 5121,\n SHORT = 5122,\n UNSIGNED_SHORT = 5123,\n INT = 5124,\n UNSIGNED_INT = 5125,\n FLOAT = 5126,\n DOUBLE = 5130,\n}\n\n// Determines how to interpret the structure of the values accessed by an accessor\nenum GLTFDataStructureType {\n SCALAR = 0,\n VEC2 = 1,\n VEC3 = 2,\n VEC4 = 3,\n MAT2 = 4,\n MAT3 = 5,\n MAT4 = 6,\n}\n\nexport const alignTo = (val: number, align: number): number => {\n return Math.floor((val + align - 1) / align) * align;\n};\n\nconst parseGltfDataStructureType = (type: string) => {\n switch (type) {\n case 'SCALAR':\n return GLTFDataStructureType.SCALAR;\n case 'VEC2':\n return GLTFDataStructureType.VEC2;\n case 'VEC3':\n return GLTFDataStructureType.VEC3;\n case 'VEC4':\n return GLTFDataStructureType.VEC4;\n case 'MAT2':\n return GLTFDataStructureType.MAT2;\n case 'MAT3':\n return GLTFDataStructureType.MAT3;\n case 'MAT4':\n return GLTFDataStructureType.MAT4;\n default:\n throw Error(`Unhandled glTF Type ${type}`);\n }\n};\n\nconst gltfDataStructureTypeNumComponents = (type: GLTFDataStructureType) => {\n switch (type) {\n case GLTFDataStructureType.SCALAR:\n return 1;\n case GLTFDataStructureType.VEC2:\n return 2;\n case GLTFDataStructureType.VEC3:\n return 3;\n case GLTFDataStructureType.VEC4:\n case GLTFDataStructureType.MAT2:\n return 4;\n case GLTFDataStructureType.MAT3:\n return 9;\n case GLTFDataStructureType.MAT4:\n return 16;\n default:\n throw Error(`Invalid glTF Type ${type}`);\n }\n};\n\n// Note: only returns non-normalized type names,\n// so byte/ubyte = sint8/uint8, not snorm8/unorm8, same for ushort\nconst gltfVertexType = (\n componentType: GLTFDataComponentType,\n type: GLTFDataStructureType\n) => {\n let typeStr = null;\n switch (componentType) {\n case GLTFDataComponentType.BYTE:\n typeStr = 'sint8';\n break;\n case GLTFDataComponentType.UNSIGNED_BYTE:\n typeStr = 'uint8';\n break;\n case GLTFDataComponentType.SHORT:\n typeStr = 'sint16';\n break;\n case GLTFDataComponentType.UNSIGNED_SHORT:\n typeStr = 'uint16';\n break;\n case GLTFDataComponentType.INT:\n typeStr = 'int32';\n break;\n case GLTFDataComponentType.UNSIGNED_INT:\n typeStr = 'uint32';\n break;\n case GLTFDataComponentType.FLOAT:\n typeStr = 'float32';\n break;\n default:\n throw Error(`Unrecognized or unsupported glTF type ${componentType}`);\n }\n\n switch (gltfDataStructureTypeNumComponents(type)) {\n case 1:\n return typeStr;\n case 2:\n return typeStr + 'x2';\n case 3:\n return typeStr + 'x3';\n case 4:\n return typeStr + 'x4';\n // Vertex attributes should never be a matrix type, so we should not hit this\n // unless we're passed an improperly created gltf file\n default:\n throw Error(`Invalid number of components for gltfType: ${type}`);\n }\n};\n\nconst gltfElementSize = (\n componentType: GLTFDataComponentType,\n type: GLTFDataStructureType\n) => {\n let componentSize = 0;\n switch (componentType) {\n case GLTFDataComponentType.BYTE:\n componentSize = 1;\n break;\n case GLTFDataComponentType.UNSIGNED_BYTE:\n componentSize = 1;\n break;\n case GLTFDataComponentType.SHORT:\n componentSize = 2;\n break;\n case GLTFDataComponentType.UNSIGNED_SHORT:\n componentSize = 2;\n break;\n case GLTFDataComponentType.INT:\n componentSize = 4;\n break;\n case GLTFDataComponentType.UNSIGNED_INT:\n componentSize = 4;\n break;\n case GLTFDataComponentType.FLOAT:\n componentSize = 4;\n break;\n case GLTFDataComponentType.DOUBLE:\n componentSize = 8;\n break;\n default:\n throw Error('Unrecognized GLTF Component Type?');\n }\n return gltfDataStructureTypeNumComponents(type) * componentSize;\n};\n\n// Convert differently depending on if the shader is a vertex or compute shader\nconst convertGPUVertexFormatToWGSLFormat = (vertexFormat: GPUVertexFormat) => {\n switch (vertexFormat) {\n case 'float32': {\n return 'f32';\n }\n case 'float32x2': {\n return 'vec2';\n }\n case 'float32x3': {\n return 'vec3';\n }\n case 'float32x4': {\n return 'vec4';\n }\n case 'uint32': {\n return 'u32';\n }\n case 'uint32x2': {\n return 'vec2';\n }\n case 'uint32x3': {\n return 'vec3';\n }\n case 'uint32x4': {\n return 'vec4';\n }\n case 'uint8x2': {\n return 'vec2';\n }\n case 'uint8x4': {\n return 'vec4';\n }\n case 'uint16x4': {\n return 'vec4';\n }\n case 'uint16x2': {\n return 'vec2';\n }\n default: {\n return 'f32';\n }\n }\n};\n\nexport class GLTFBuffer {\n buffer: Uint8Array;\n constructor(buffer: ArrayBuffer, offset: number, size: number) {\n this.buffer = new Uint8Array(buffer, offset, size);\n }\n}\n\nexport class GLTFBufferView {\n byteLength: number;\n byteStride: number;\n view: Uint8Array;\n needsUpload: boolean;\n gpuBuffer: GPUBuffer;\n usage: number;\n constructor(buffer: GLTFBuffer, view: BufferView) {\n this.byteLength = view['byteLength'];\n this.byteStride = 0;\n if (view['byteStride'] !== undefined) {\n this.byteStride = view['byteStride'];\n }\n // Create the buffer view. Note that subarray creates a new typed\n // view over the same array buffer, we do not make a copy here.\n let viewOffset = 0;\n if (view['byteOffset'] !== undefined) {\n viewOffset = view['byteOffset'];\n }\n // NOTE: This creates a uint8array view into the buffer!\n // When we call .buffer on this view, it will give us back the original array buffer\n // Accordingly, when converting our buffer from a uint8array to a float32array representation\n // we need to apply the byte offset of our view when creating our buffer\n // ie new Float32Array(this.view.buffer, this.view.byteOffset, this.view.byteLength)\n this.view = buffer.buffer.subarray(\n viewOffset,\n viewOffset + this.byteLength\n );\n\n this.needsUpload = false;\n this.gpuBuffer = null;\n this.usage = 0;\n }\n\n addUsage(usage: number) {\n this.usage = this.usage | usage;\n }\n\n upload(device: GPUDevice) {\n // Note: must align to 4 byte size when mapped at creation is true\n const buf: GPUBuffer = device.createBuffer({\n size: alignTo(this.view.byteLength, 4),\n usage: this.usage,\n mappedAtCreation: true,\n });\n new Uint8Array(buf.getMappedRange()).set(this.view);\n buf.unmap();\n this.gpuBuffer = buf;\n this.needsUpload = false;\n }\n}\n\nexport class GLTFAccessor {\n count: number;\n componentType: GLTFDataComponentType;\n structureType: GLTFDataStructureType;\n view: GLTFBufferView;\n byteOffset: number;\n constructor(view: GLTFBufferView, accessor: Accessor) {\n this.count = accessor['count'];\n this.componentType = accessor['componentType'];\n this.structureType = parseGltfDataStructureType(accessor['type']);\n this.view = view;\n this.byteOffset = 0;\n if (accessor['byteOffset'] !== undefined) {\n this.byteOffset = accessor['byteOffset'];\n }\n }\n\n get byteStride() {\n const elementSize = gltfElementSize(this.componentType, this.structureType);\n return Math.max(elementSize, this.view.byteStride);\n }\n\n get byteLength() {\n return this.count * this.byteStride;\n }\n\n // Get the vertex attribute type for accessors that are used as vertex attributes\n get vertexType() {\n return gltfVertexType(this.componentType, this.structureType);\n }\n}\n\ninterface AttributeMapInterface {\n [key: string]: GLTFAccessor;\n}\n\nexport class GLTFPrimitive {\n topology: GLTFRenderMode;\n renderPipeline: GPURenderPipeline;\n private attributeMap: AttributeMapInterface;\n private attributes: string[] = [];\n constructor(\n topology: GLTFRenderMode,\n attributeMap: AttributeMapInterface,\n attributes: string[]\n ) {\n this.topology = topology;\n this.renderPipeline = null;\n // Maps attribute names to accessors\n this.attributeMap = attributeMap;\n this.attributes = attributes;\n\n for (const key in this.attributeMap) {\n this.attributeMap[key].view.needsUpload = true;\n if (key === 'INDICES') {\n this.attributeMap['INDICES'].view.addUsage(GPUBufferUsage.INDEX);\n continue;\n }\n this.attributeMap[key].view.addUsage(GPUBufferUsage.VERTEX);\n }\n }\n\n buildRenderPipeline(\n device: GPUDevice,\n vertexShader: string,\n fragmentShader: string,\n colorFormat: GPUTextureFormat,\n depthFormat: GPUTextureFormat,\n bgLayouts: GPUBindGroupLayout[],\n label: string\n ) {\n // For now, just check if the attributeMap contains a given attribute using map.has(), and add it if it does\n // POSITION, NORMAL, TEXCOORD_0, JOINTS_0, WEIGHTS_0 for order\n // Vertex attribute state and shader stage\n let VertexInputShaderString = `struct VertexInput {\\n`;\n const vertexBuffers: GPUVertexBufferLayout[] = this.attributes.map(\n (attr, idx) => {\n const vertexFormat: GPUVertexFormat =\n this.attributeMap[attr].vertexType;\n const attrString = attr.toLowerCase().replace(/_0$/, '');\n VertexInputShaderString += `\\t@location(${idx}) ${attrString}: ${convertGPUVertexFormatToWGSLFormat(\n vertexFormat\n )},\\n`;\n return {\n arrayStride: this.attributeMap[attr].byteStride,\n attributes: [\n {\n format: this.attributeMap[attr].vertexType,\n offset: this.attributeMap[attr].byteOffset,\n shaderLocation: idx,\n },\n ],\n } as GPUVertexBufferLayout;\n }\n );\n VertexInputShaderString += '}';\n\n const vertexState: GPUVertexState = {\n // Shader stage info\n module: device.createShaderModule({\n code: VertexInputShaderString + vertexShader,\n }),\n entryPoint: 'vertexMain',\n buffers: vertexBuffers,\n };\n\n const fragmentState: GPUFragmentState = {\n // Shader info\n module: device.createShaderModule({\n code: VertexInputShaderString + fragmentShader,\n }),\n entryPoint: 'fragmentMain',\n // Output render target info\n targets: [{ format: colorFormat }],\n };\n\n // Our loader only supports triangle lists and strips, so by default we set\n // the primitive topology to triangle list, and check if it's instead a triangle strip\n const primitive: GPUPrimitiveState = { topology: 'triangle-list' };\n if (this.topology == GLTFRenderMode.TRIANGLE_STRIP) {\n primitive.topology = 'triangle-strip';\n primitive.stripIndexFormat = this.attributeMap['INDICES'].vertexType;\n }\n\n const layout: GPUPipelineLayout = device.createPipelineLayout({\n bindGroupLayouts: bgLayouts,\n label: `${label}.pipelineLayout`,\n });\n\n const rpDescript: GPURenderPipelineDescriptor = {\n layout: layout,\n label: `${label}.pipeline`,\n vertex: vertexState,\n fragment: fragmentState,\n primitive: primitive,\n depthStencil: {\n format: depthFormat,\n depthWriteEnabled: true,\n depthCompare: 'less',\n },\n };\n\n this.renderPipeline = device.createRenderPipeline(rpDescript);\n }\n\n render(renderPassEncoder: GPURenderPassEncoder, bindGroups: GPUBindGroup[]) {\n renderPassEncoder.setPipeline(this.renderPipeline);\n bindGroups.forEach((bg, idx) => {\n renderPassEncoder.setBindGroup(idx, bg);\n });\n\n //if skin do something with bone bind group\n this.attributes.map((attr, idx) => {\n renderPassEncoder.setVertexBuffer(\n idx,\n this.attributeMap[attr].view.gpuBuffer,\n this.attributeMap[attr].byteOffset,\n this.attributeMap[attr].byteLength\n );\n });\n\n if (this.attributeMap['INDICES']) {\n renderPassEncoder.setIndexBuffer(\n this.attributeMap['INDICES'].view.gpuBuffer,\n this.attributeMap['INDICES'].vertexType,\n this.attributeMap['INDICES'].byteOffset,\n this.attributeMap['INDICES'].byteLength\n );\n renderPassEncoder.drawIndexed(this.attributeMap['INDICES'].count);\n } else {\n renderPassEncoder.draw(this.attributeMap['POSITION'].count);\n }\n }\n}\n\nexport class GLTFMesh {\n name: string;\n primitives: GLTFPrimitive[];\n constructor(name: string, primitives: GLTFPrimitive[]) {\n this.name = name;\n this.primitives = primitives;\n }\n\n buildRenderPipeline(\n device: GPUDevice,\n vertexShader: string,\n fragmentShader: string,\n colorFormat: GPUTextureFormat,\n depthFormat: GPUTextureFormat,\n bgLayouts: GPUBindGroupLayout[]\n ) {\n // We take a pretty simple approach to start. Just loop through all the primitives and\n // build their respective render pipelines\n for (let i = 0; i < this.primitives.length; ++i) {\n this.primitives[i].buildRenderPipeline(\n device,\n vertexShader,\n fragmentShader,\n colorFormat,\n depthFormat,\n bgLayouts,\n `PrimitivePipeline${i}`\n );\n }\n }\n\n render(renderPassEncoder: GPURenderPassEncoder, bindGroups: GPUBindGroup[]) {\n // We take a pretty simple approach to start. Just loop through all the primitives and\n // call their individual draw methods\n for (let i = 0; i < this.primitives.length; ++i) {\n this.primitives[i].render(renderPassEncoder, bindGroups);\n }\n }\n}\n\nexport const validateGLBHeader = (header: DataView) => {\n if (header.getUint32(0, true) != 0x46546c67) {\n throw Error('Provided file is not a glB file');\n }\n if (header.getUint32(4, true) != 2) {\n throw Error('Provided file is glTF 2.0 file');\n }\n};\n\nexport const validateBinaryHeader = (header: Uint32Array) => {\n if (header[1] != 0x004e4942) {\n throw Error(\n 'Invalid glB: The second chunk of the glB file is not a binary chunk!'\n );\n }\n};\n\ntype TempReturn = {\n meshes: GLTFMesh[];\n nodes: GLTFNode[];\n scenes: GLTFScene[];\n skins: GLTFSkin[];\n};\n\nexport class BaseTransformation {\n position: Vec3;\n rotation: Quat;\n scale: Vec3;\n constructor(\n // Identity translation vec3\n position = [0, 0, 0],\n // Identity quaternion\n rotation = [0, 0, 0, 1],\n // Identity scale vec3\n scale = [1, 1, 1]\n ) {\n this.position = position;\n this.rotation = rotation;\n this.scale = scale;\n }\n getMatrix(): Mat4 {\n // Analagous to let transformationMatrix: mat4x4f = translation * rotation * scale;\n const dst = mat4.identity();\n // Scale the transformation Matrix\n mat4.scale(dst, this.scale, dst);\n // Calculate the rotationMatrix from the quaternion\n const rotationMatrix = mat4.fromQuat(this.rotation);\n // Apply the rotation Matrix to the scaleMatrix (rotMat * scaleMat)\n mat4.multiply(rotationMatrix, dst, dst);\n // Translate the transformationMatrix\n mat4.translate(dst, this.position, dst);\n return dst;\n }\n}\n\nexport class GLTFNode {\n name: string;\n source: BaseTransformation;\n parent: GLTFNode | null;\n children: GLTFNode[];\n // Transforms all node's children in the node's local space, with node itself acting as the origin\n localMatrix: Mat4;\n worldMatrix: Mat4;\n // List of Meshes associated with this node\n drawables: GLTFMesh[];\n test = 0;\n skin?: GLTFSkin;\n private nodeTransformGPUBuffer: GPUBuffer;\n private nodeTransformBindGroup: GPUBindGroup;\n\n constructor(\n device: GPUDevice,\n bgLayout: GPUBindGroupLayout,\n source: BaseTransformation,\n name?: string,\n skin?: GLTFSkin\n ) {\n this.name = name\n ? name\n : `node_${source.position} ${source.rotation} ${source.scale}`;\n this.source = source;\n this.parent = null;\n this.children = [];\n this.localMatrix = mat4.identity();\n this.worldMatrix = mat4.identity();\n this.drawables = [];\n this.nodeTransformGPUBuffer = device.createBuffer({\n size: Float32Array.BYTES_PER_ELEMENT * 16,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n this.nodeTransformBindGroup = device.createBindGroup({\n layout: bgLayout,\n entries: [\n {\n binding: 0,\n resource: {\n buffer: this.nodeTransformGPUBuffer,\n },\n },\n ],\n });\n this.skin = skin;\n }\n\n setParent(parent: GLTFNode) {\n if (this.parent) {\n this.parent.removeChild(this);\n this.parent = null;\n }\n parent.addChild(this);\n this.parent = parent;\n }\n\n updateWorldMatrix(device: GPUDevice, parentWorldMatrix?: Mat4) {\n // Get local transform of this particular node, and if the node has a parent,\n // multiply it against the parent's transform matrix to get transformMatrix relative to world.\n this.localMatrix = this.source.getMatrix();\n if (parentWorldMatrix) {\n mat4.multiply(parentWorldMatrix, this.localMatrix, this.worldMatrix);\n } else {\n mat4.copy(this.localMatrix, this.worldMatrix);\n }\n const worldMatrix = this.worldMatrix as Float32Array;\n device.queue.writeBuffer(\n this.nodeTransformGPUBuffer,\n 0,\n worldMatrix.buffer,\n worldMatrix.byteOffset,\n worldMatrix.byteLength\n );\n for (const child of this.children) {\n child.updateWorldMatrix(device, worldMatrix);\n }\n }\n\n traverse(fn: (n: GLTFNode, ...args) => void) {\n fn(this);\n for (const child of this.children) {\n child.traverse(fn);\n }\n }\n\n renderDrawables(\n passEncoder: GPURenderPassEncoder,\n bindGroups: GPUBindGroup[]\n ) {\n if (this.drawables !== undefined) {\n for (const drawable of this.drawables) {\n if (this.skin) {\n drawable.render(passEncoder, [\n ...bindGroups,\n this.nodeTransformBindGroup,\n this.skin.skinBindGroup,\n ]);\n } else {\n drawable.render(passEncoder, [\n ...bindGroups,\n this.nodeTransformBindGroup,\n ]);\n }\n }\n }\n // Render any of its children\n for (const child of this.children) {\n child.renderDrawables(passEncoder, bindGroups);\n }\n }\n\n private addChild(child: GLTFNode) {\n this.children.push(child);\n }\n\n private removeChild(child: GLTFNode) {\n const ndx = this.children.indexOf(child);\n this.children.splice(ndx, 1);\n }\n}\n\nexport class GLTFScene {\n nodes?: number[];\n name?: any;\n extensions?: any;\n extras?: any;\n [k: string]: any;\n root: GLTFNode;\n\n constructor(\n device: GPUDevice,\n nodeTransformBGL: GPUBindGroupLayout,\n baseScene: Scene\n ) {\n this.nodes = baseScene.nodes;\n this.name = baseScene.name;\n this.root = new GLTFNode(\n device,\n nodeTransformBGL,\n new BaseTransformation(),\n baseScene.name\n );\n }\n}\n\nexport class GLTFSkin {\n // Nodes of the skin's joints\n // [5, 2, 3] means our joint info is at nodes 5, 2, and 3\n joints: number[];\n // Bind Group for this skin's uniform buffer\n skinBindGroup: GPUBindGroup;\n // Static bindGroupLayout shared across all skins\n // In a larger shader with more properties, certain bind groups\n // would likely have to be combined due to device limitations in the number of bind groups\n // allowed within a shader\n // Inverse bind matrices parsed from the accessor\n private inverseBindMatrices: Float32Array;\n private jointMatricesUniformBuffer: GPUBuffer;\n private inverseBindMatricesUniformBuffer: GPUBuffer;\n static skinBindGroupLayout: GPUBindGroupLayout;\n\n static createSharedBindGroupLayout(device: GPUDevice) {\n this.skinBindGroupLayout = device.createBindGroupLayout({\n label: 'StaticGLTFSkin.bindGroupLayout',\n entries: [\n // Holds the initial joint matrices buffer\n {\n binding: 0,\n buffer: {\n type: 'read-only-storage',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n // Holds the inverse bind matrices buffer\n {\n binding: 1,\n buffer: {\n type: 'read-only-storage',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n ],\n });\n }\n\n // For the sake of simplicity and easier debugging, we're going to convert our skin gpu accessor to a\n // float32array, which should be performant enough for this example since there is only one skin (again, this)\n // is not a comprehensive gltf parser\n constructor(\n device: GPUDevice,\n inverseBindMatricesAccessor: GLTFAccessor,\n joints: number[]\n ) {\n if (\n inverseBindMatricesAccessor.componentType !==\n GLTFDataComponentType.FLOAT ||\n inverseBindMatricesAccessor.byteStride !== 64\n ) {\n throw Error(\n `This skin's provided accessor does not access a mat4x4 matrix, or does not access the provided mat4x4 data correctly`\n );\n }\n // NOTE: Come back to this uint8array to float32array conversion in case it is incorrect\n this.inverseBindMatrices = new Float32Array(\n inverseBindMatricesAccessor.view.view.buffer,\n inverseBindMatricesAccessor.view.view.byteOffset,\n inverseBindMatricesAccessor.view.view.byteLength / 4\n );\n this.joints = joints;\n const skinGPUBufferUsage: GPUBufferDescriptor = {\n size: Float32Array.BYTES_PER_ELEMENT * 16 * joints.length,\n usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST,\n };\n this.jointMatricesUniformBuffer = device.createBuffer(skinGPUBufferUsage);\n this.inverseBindMatricesUniformBuffer =\n device.createBuffer(skinGPUBufferUsage);\n device.queue.writeBuffer(\n this.inverseBindMatricesUniformBuffer,\n 0,\n this.inverseBindMatrices\n );\n this.skinBindGroup = device.createBindGroup({\n layout: GLTFSkin.skinBindGroupLayout,\n label: 'StaticGLTFSkin.bindGroup',\n entries: [\n {\n binding: 0,\n resource: {\n buffer: this.jointMatricesUniformBuffer,\n },\n },\n {\n binding: 1,\n resource: {\n buffer: this.inverseBindMatricesUniformBuffer,\n },\n },\n ],\n });\n }\n\n update(device: GPUDevice, currentNodeIndex: number, nodes: GLTFNode[]) {\n const globalWorldInverse = mat4.inverse(\n nodes[currentNodeIndex].worldMatrix\n );\n for (let j = 0; j < this.joints.length; j++) {\n const joint = this.joints[j];\n const dstMatrix: Mat4 = mat4.identity();\n mat4.multiply(globalWorldInverse, nodes[joint].worldMatrix, dstMatrix);\n const toWrite = dstMatrix as Float32Array;\n device.queue.writeBuffer(\n this.jointMatricesUniformBuffer,\n j * 64,\n toWrite.buffer,\n toWrite.byteOffset,\n toWrite.byteLength\n );\n }\n }\n}\n\n// Upload a GLB model, parse its JSON and Binary components, and create the requisite GPU resources\n// to render them. NOTE: Not extensible to all GLTF contexts at this point in time\nexport const convertGLBToJSONAndBinary = async (\n buffer: ArrayBuffer,\n device: GPUDevice\n): Promise => {\n // Binary GLTF layout: https://cdn.willusher.io/webgpu-0-to-gltf/glb-layout.svg\n const jsonHeader = new DataView(buffer, 0, 20);\n validateGLBHeader(jsonHeader);\n\n // Length of the jsonChunk found at jsonHeader[12 - 15]\n const jsonChunkLength = jsonHeader.getUint32(12, true);\n\n // Parse the JSON chunk of the glB file to a JSON object\n const jsonChunk: GlTf = JSON.parse(\n new TextDecoder('utf-8').decode(new Uint8Array(buffer, 20, jsonChunkLength))\n );\n\n console.log(jsonChunk);\n // Binary data located after jsonChunk\n const binaryHeader = new Uint32Array(buffer, 20 + jsonChunkLength, 2);\n validateBinaryHeader(binaryHeader);\n\n const binaryChunk = new GLTFBuffer(\n buffer,\n 28 + jsonChunkLength,\n binaryHeader[0]\n );\n\n //Const populate missing properties of jsonChunk\n for (const accessor of jsonChunk.accessors) {\n accessor.byteOffset = accessor.byteOffset ?? 0;\n accessor.normalized = accessor.normalized ?? false;\n }\n\n for (const bufferView of jsonChunk.bufferViews) {\n bufferView.byteOffset = bufferView.byteOffset ?? 0;\n }\n\n if (jsonChunk.samplers) {\n for (const sampler of jsonChunk.samplers) {\n sampler.wrapS = sampler.wrapS ?? 10497; //GL.REPEAT\n sampler.wrapT = sampler.wrapT ?? 10947; //GL.REPEAT\n }\n }\n\n //Mark each accessor with its intended usage within the vertexShader.\n //Often necessary due to infrequencey with which the BufferView target field is populated.\n for (const mesh of jsonChunk.meshes) {\n for (const primitive of mesh.primitives) {\n if ('indices' in primitive) {\n const accessor = jsonChunk.accessors[primitive.indices];\n jsonChunk.accessors[primitive.indices].bufferViewUsage |=\n GPUBufferUsage.INDEX;\n jsonChunk.bufferViews[accessor.bufferView].usage |=\n GPUBufferUsage.INDEX;\n }\n for (const attribute of Object.values(primitive.attributes)) {\n const accessor = jsonChunk.accessors[attribute];\n jsonChunk.accessors[attribute].bufferViewUsage |= GPUBufferUsage.VERTEX;\n jsonChunk.bufferViews[accessor.bufferView].usage |=\n GPUBufferUsage.VERTEX;\n }\n }\n }\n\n // Create GLTFBufferView objects for all the buffer views in the glTF file\n const bufferViews: GLTFBufferView[] = [];\n for (let i = 0; i < jsonChunk.bufferViews.length; ++i) {\n bufferViews.push(new GLTFBufferView(binaryChunk, jsonChunk.bufferViews[i]));\n }\n\n const accessors: GLTFAccessor[] = [];\n for (let i = 0; i < jsonChunk.accessors.length; ++i) {\n const accessorInfo = jsonChunk.accessors[i];\n const viewID = accessorInfo['bufferView'];\n accessors.push(new GLTFAccessor(bufferViews[viewID], accessorInfo));\n }\n // Load the first mesh\n const meshes: GLTFMesh[] = [];\n for (let i = 0; i < jsonChunk.meshes.length; i++) {\n const mesh = jsonChunk.meshes[i];\n const meshPrimitives: GLTFPrimitive[] = [];\n for (let j = 0; j < mesh.primitives.length; ++j) {\n const prim = mesh.primitives[j];\n let topology = prim['mode'];\n // Default is triangles if mode specified\n if (topology === undefined) {\n topology = GLTFRenderMode.TRIANGLES;\n }\n if (\n topology != GLTFRenderMode.TRIANGLES &&\n topology != GLTFRenderMode.TRIANGLE_STRIP\n ) {\n throw Error(`Unsupported primitive mode ${prim['mode']}`);\n }\n\n const primitiveAttributeMap = {};\n const attributes = [];\n if (jsonChunk['accessors'][prim['indices']] !== undefined) {\n const indices = accessors[prim['indices']];\n primitiveAttributeMap['INDICES'] = indices;\n }\n\n // Loop through all the attributes and store within our attributeMap\n for (const attr in prim['attributes']) {\n const accessor = accessors[prim['attributes'][attr]];\n primitiveAttributeMap[attr] = accessor;\n if (accessor.structureType > 3) {\n throw Error(\n 'Vertex attribute accessor accessed an unsupported data type for vertex attribute'\n );\n }\n attributes.push(attr);\n }\n meshPrimitives.push(\n new GLTFPrimitive(topology, primitiveAttributeMap, attributes)\n );\n }\n meshes.push(new GLTFMesh(mesh.name, meshPrimitives));\n }\n\n const skins: GLTFSkin[] = [];\n for (const skin of jsonChunk.skins) {\n const inverseBindMatrixAccessor = accessors[skin.inverseBindMatrices];\n inverseBindMatrixAccessor.view.addUsage(\n GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST\n );\n inverseBindMatrixAccessor.view.needsUpload = true;\n }\n\n // Upload the buffer views used by mesh\n for (let i = 0; i < bufferViews.length; ++i) {\n if (bufferViews[i].needsUpload) {\n bufferViews[i].upload(device);\n }\n }\n\n GLTFSkin.createSharedBindGroupLayout(device);\n for (const skin of jsonChunk.skins) {\n const inverseBindMatrixAccessor = accessors[skin.inverseBindMatrices];\n const joints = skin.joints;\n skins.push(new GLTFSkin(device, inverseBindMatrixAccessor, joints));\n }\n\n const nodes: GLTFNode[] = [];\n\n // Access each node. If node references a mesh, add mesh to that node\n const nodeUniformsBindGroupLayout = device.createBindGroupLayout({\n label: 'NodeUniforms.bindGroupLayout',\n entries: [\n {\n binding: 0,\n buffer: {\n type: 'uniform',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n ],\n });\n for (const currNode of jsonChunk.nodes) {\n const baseTransformation = new BaseTransformation(\n currNode.translation,\n currNode.rotation,\n currNode.scale\n );\n const nodeToCreate = new GLTFNode(\n device,\n nodeUniformsBindGroupLayout,\n baseTransformation,\n currNode.name,\n skins[currNode.skin]\n );\n const meshToAdd = meshes[currNode.mesh];\n if (meshToAdd) {\n nodeToCreate.drawables.push(meshToAdd);\n }\n nodes.push(nodeToCreate);\n }\n\n // Assign each node its children\n nodes.forEach((node, idx) => {\n const children = jsonChunk.nodes[idx].children;\n if (children) {\n children.forEach((childIdx) => {\n const child = nodes[childIdx];\n child.setParent(node);\n });\n }\n });\n\n const scenes: GLTFScene[] = [];\n\n for (const jsonScene of jsonChunk.scenes) {\n const scene = new GLTFScene(device, nodeUniformsBindGroupLayout, jsonScene);\n const sceneChildren = scene.nodes;\n sceneChildren.forEach((childIdx) => {\n const child = nodes[childIdx];\n child.setParent(scene.root);\n });\n scenes.push(scene);\n }\n return {\n meshes,\n nodes,\n scenes,\n skins,\n };\n};\n"},6370:function(e,n){"use strict";n.Z="import { Mat4 } from 'wgpu-matrix';\nimport { GLTFNode } from './glbUtils';\n\n/* Sourced from https://github.com/bwasty/gltf-loader-ts/blob/master/source/gltf.ts */\n/* License for use can be found here: https://github.com/bwasty/gltf-loader-ts/blob/master/LICENSE */\n/* Comments and types have been excluded from original source for sake of cleanliness and brevity */\nexport type GlTfId = number;\n\nexport interface AccessorSparseIndices {\n bufferView: GlTfId;\n byteOffset?: number;\n componentType: 5121 | 5123 | 5125 | number;\n}\n\nexport interface AccessorSparseValues {\n bufferView: GlTfId;\n byteOffset?: number;\n}\n\nexport interface AccessorSparse {\n count: number;\n indices: AccessorSparseIndices;\n values: AccessorSparseValues;\n}\n\nexport interface Accessor {\n bufferView?: GlTfId;\n bufferViewUsage?: 34962 | 34963 | number;\n byteOffset?: number;\n componentType: 5120 | 5121 | 5122 | 5123 | 5125 | 5126 | number;\n normalized?: boolean;\n count: number;\n type: 'SCALAR' | 'VEC2' | 'VEC3' | 'VEC4' | 'MAT2' | 'MAT3' | 'MAT4' | string;\n max?: number[];\n min?: number[];\n sparse?: AccessorSparse;\n name?: string;\n}\n\nexport interface AnimationChannelTarget {\n node?: GlTfId;\n path: 'translation' | 'rotation' | 'scale' | 'weights' | string;\n}\n\nexport interface AnimationChannel {\n sampler: GlTfId;\n target: AnimationChannelTarget;\n}\n\nexport interface AnimationSampler {\n input: GlTfId;\n interpolation?: 'LINEAR' | 'STEP' | 'CUBICSPLINE' | string;\n output: GlTfId;\n}\n\nexport interface Animation {\n channels: AnimationChannel[];\n samplers: AnimationSampler[];\n name?: string;\n}\n\nexport interface Asset {\n copyright?: string;\n generator?: string;\n version: string;\n minVersion?: string;\n}\n\nexport interface Buffer {\n uri?: string;\n byteLength: number;\n name?: string;\n}\n\nexport interface BufferView {\n buffer: GlTfId;\n byteOffset?: number;\n byteLength: number;\n byteStride?: number;\n target?: 34962 | 34963 | number;\n name?: string;\n usage?: number;\n}\n\nexport interface CameraOrthographic {\n xmag: number;\n ymag: number;\n zfar: number;\n znear: number;\n}\n\nexport interface CameraPerspective {\n aspectRatio?: number;\n yfov: number;\n zfar?: number;\n znear: number;\n}\n\nexport interface Camera {\n orthographic?: CameraOrthographic;\n perspective?: CameraPerspective;\n type: 'perspective' | 'orthographic' | string;\n name?: any;\n}\n\nexport interface Image {\n uri?: string;\n mimeType?: 'image/jpeg' | 'image/png' | string;\n bufferView?: GlTfId;\n name?: string;\n}\n\nexport interface TextureInfo {\n index: GlTfId;\n texCoord?: number;\n}\n\nexport interface MaterialPbrMetallicRoughness {\n baseColorFactor?: number[];\n baseColorTexture?: TextureInfo;\n metallicFactor?: number;\n roughnessFactor?: number;\n metallicRoughnessTexture?: TextureInfo;\n}\nexport interface MaterialNormalTextureInfo {\n index?: any;\n texCoord?: any;\n scale?: number;\n}\nexport interface MaterialOcclusionTextureInfo {\n index?: any;\n texCoord?: any;\n strength?: number;\n}\n\nexport interface Material {\n name?: string;\n pbrMetallicRoughness?: MaterialPbrMetallicRoughness;\n normalTexture?: MaterialNormalTextureInfo;\n occlusionTexture?: MaterialOcclusionTextureInfo;\n emissiveTexture?: TextureInfo;\n emissiveFactor?: number[];\n alphaMode?: 'OPAQUE' | 'MASK' | 'BLEND' | string;\n alphaCutoff?: number;\n doubleSided?: boolean;\n}\n\nexport interface MeshPrimitive {\n attributes: {\n [k: string]: GlTfId;\n };\n indices?: GlTfId;\n material?: GlTfId;\n mode?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | number;\n targets?: {\n [k: string]: GlTfId;\n }[];\n}\n\nexport interface Mesh {\n primitives: MeshPrimitive[];\n weights?: number[];\n name?: string;\n}\n\nexport interface Node {\n camera?: GlTfId;\n children?: GlTfId[];\n skin?: GlTfId;\n matrix?: number[];\n worldTransformationMatrix?: Mat4;\n mesh?: GlTfId;\n rotation?: number[];\n scale?: number[];\n translation?: number[];\n weights?: number[];\n name?: string;\n}\n\nexport interface Sampler {\n magFilter?: 9728 | 9729 | number;\n minFilter?: 9728 | 9729 | 9984 | 9985 | 9986 | 9987 | number;\n wrapS?: 33071 | 33648 | 10497 | number;\n wrapT?: 33071 | 33648 | 10497 | number;\n name?: string;\n}\n\nexport interface Scene {\n nodes?: GlTfId[];\n name?: any;\n root?: GLTFNode;\n}\nexport interface Skin {\n inverseBindMatrices?: GlTfId;\n skeleton?: GlTfId;\n joints: GlTfId[];\n name?: string;\n}\n\nexport interface Texture {\n sampler?: GlTfId;\n source?: GlTfId;\n name?: string;\n}\n\nexport interface GlTf {\n extensionsUsed?: string[];\n extensionsRequired?: string[];\n accessors?: Accessor[];\n animations?: Animation[];\n asset: Asset;\n buffers?: Buffer[];\n bufferViews?: BufferView[];\n cameras?: Camera[];\n images?: Image[];\n materials?: Material[];\n meshes?: Mesh[];\n nodes?: Node[];\n samplers?: Sampler[];\n scene?: GlTfId;\n scenes?: Scene[];\n skins?: Skin[];\n textures?: Texture[];\n}\n"},2624:function(e,n){"use strict";n.Z="struct VertexInput {\n @location(0) vert_pos: vec2,\n @location(1) joints: vec4,\n @location(2) weights: vec4\n}\n\nstruct VertexOutput {\n @builtin(position) Position: vec4,\n @location(0) world_pos: vec3,\n @location(1) joints: vec4,\n @location(2) weights: vec4,\n}\n\nstruct CameraUniforms {\n projMatrix: mat4x4f,\n viewMatrix: mat4x4f,\n modelMatrix: mat4x4f,\n}\n\nstruct GeneralUniforms {\n render_mode: u32,\n skin_mode: u32,\n}\n\n@group(0) @binding(0) var camera_uniforms: CameraUniforms;\n@group(1) @binding(0) var general_uniforms: GeneralUniforms;\n@group(2) @binding(0) var joint_matrices: array>;\n@group(2) @binding(1) var inverse_bind_matrices: array>;\n\n@vertex\nfn vertexMain(input: VertexInput) -> VertexOutput {\n var output: VertexOutput;\n var bones = vec4(0.0, 0.0, 0.0, 0.0);\n let position = vec4(input.vert_pos.x, input.vert_pos.y, 0.0, 1.0);\n // Get relevant 4 bone matrices\n let joint0 = joint_matrices[input.joints[0]] * inverse_bind_matrices[input.joints[0]];\n let joint1 = joint_matrices[input.joints[1]] * inverse_bind_matrices[input.joints[1]];\n let joint2 = joint_matrices[input.joints[2]] * inverse_bind_matrices[input.joints[2]];\n let joint3 = joint_matrices[input.joints[3]] * inverse_bind_matrices[input.joints[3]];\n // Compute influence of joint based on weight\n let skin_matrix = \n joint0 * input.weights[0] +\n joint1 * input.weights[1] +\n joint2 * input.weights[2] +\n joint3 * input.weights[3];\n // Bone transformed mesh\n output.Position = select(\n camera_uniforms.projMatrix * camera_uniforms.viewMatrix * camera_uniforms.modelMatrix * position,\n camera_uniforms.projMatrix * camera_uniforms.viewMatrix * camera_uniforms.modelMatrix * skin_matrix * position,\n general_uniforms.skin_mode == 0\n );\n\n //Get unadjusted world coordinates\n output.world_pos = position.xyz;\n output.joints = vec4(f32(input.joints.x), f32(input.joints.y), f32(input.joints.z), f32(input.joints.w));\n output.weights = input.weights;\n return output;\n}\n\n\n@fragment\nfn fragmentMain(input: VertexOutput) -> @location(0) vec4 {\n switch general_uniforms.render_mode {\n case 1: {\n return input.joints;\n }\n case 2: {\n return input.weights;\n }\n default: {\n return vec4(255.0, 0.0, 1.0, 1.0); \n }\n }\n}"},6270:function(e,n){"use strict";n.Z="/* eslint-disable prettier/prettier */\nexport const gridVertices = new Float32Array([\n // B0\n 0, 1, // 0 \n 0, -1, // 1\n // CONNECTOR\n 2, 1, // 2\n 2, -1, // 3\n // B1\n 4, 1, // 4\n 4, -1, // 5\n // CONNECTOR\n 6, 1, // 6\n 6, -1, // 7\n // B2\n 8, 1, // 8\n 8, -1, // 9,\n // CONNECTOR\n 10, 1, //10\n 10, -1, //11\n // B3\n 12, 1, //12\n 12, -1, //13\n]);\n\n// Representing the indice of four bones that can influence each vertex\nexport const gridJoints = new Uint32Array([\n 0, 0, 0, 0, // Vertex 0 is influenced by bone 0\n 0, 0, 0, 0, // 1\n 0, 1, 0, 0, // 2\n 0, 1, 0, 0, // 3\n 1, 0, 0, 0, // 4\n 1, 0, 0, 0, // 5\n 1, 2, 0, 0, // Vertex 6 is influenced by bone 1 and bone 2\n 1, 2, 0, 0, // 7\n 2, 0, 0, 0, // 8\n 2, 0, 0, 0, // 9\n 1, 2, 3, 0, //10\n 1, 2, 3, 0, //11\n 2, 3, 0, 0, //12\n 2, 3, 0, 0, //13\n])\n\n// The weights applied when ve\nexport const gridWeights = new Float32Array([\n // B0\n 1, 0, 0, 0, // 0\n 1, 0, 0, 0, // 1\n // CONNECTOR\n .5,.5, 0, 0, // 2\n .5,.5, 0, 0, // 3\n // B1\n 1, 0, 0, 0, // 4\n 1, 0, 0, 0, // 5\n // CONNECTOR\n .5,.5, 0, 0, // 6\n .5,.5, 0, 0, // 7\n // B2\n 1, 0, 0, 0, // 8\n 1, 0, 0, 0, // 9\n // CONNECTOR\n .5,.5, 0, 0, // 10\n .5,.5, 0, 0, // 11\n // B3\n 1, 0, 0, 0, // 12\n 1, 0, 0, 0, // 13\n]);\n\n// Using data above...\n// Vertex 0 is influenced by bone 0 with a weight of 1 \n// Vertex 1 is influenced by bone 1 with a weight of 1\n// Vertex 2 is influenced by bone 0 and 1 with a weight of 0.5 each\n// and so on..\n// Although a vertex can hypothetically be influenced by 4 bones,\n// in this example, we stick to each vertex being infleunced by only two\n// although there can be downstream effects of parent bones influencing child bones\n// that influence their own children\n\nexport const gridIndices = new Uint16Array([\n // B0\n 0, 1,\n 0, 2,\n 1, 3,\n // CONNECTOR\n 2, 3, //\n 2, 4,\n 3, 5,\n // B1\n 4, 5,\n 4, 6,\n 5, 7, \n // CONNECTOR\n 6, 7,\n 6, 8,\n 7, 9,\n // B2\n 8, 9,\n 8, 10,\n 9, 11,\n // CONNECTOR\n 10, 11,\n 10, 12,\n 11, 13,\n // B3\n 12, 13,\n]);"},9483:function(e,n){"use strict";n.Z="import { gridVertices, gridIndices, gridJoints, gridWeights } from './gridData';\n\n// Uses constant grid data to create appropriately sized GPU Buffers for our skinned grid\nexport const createSkinnedGridBuffers = (device: GPUDevice) => {\n // Utility function that creates GPUBuffers from data\n const createBuffer = (\n data: Float32Array | Uint32Array,\n type: 'f32' | 'u32'\n ) => {\n const buffer = device.createBuffer({\n size: data.byteLength,\n usage: GPUBufferUsage.VERTEX,\n mappedAtCreation: true,\n });\n if (type === 'f32') {\n new Float32Array(buffer.getMappedRange()).set(data);\n } else {\n new Uint32Array(buffer.getMappedRange()).set(data);\n }\n buffer.unmap();\n return buffer;\n };\n const positionsBuffer = createBuffer(gridVertices, 'f32');\n const jointsBuffer = createBuffer(gridJoints, 'u32');\n const weightsBuffer = createBuffer(gridWeights, 'f32');\n const indicesBuffer = device.createBuffer({\n size: Uint16Array.BYTES_PER_ELEMENT * gridIndices.length,\n usage: GPUBufferUsage.INDEX,\n mappedAtCreation: true,\n });\n new Uint16Array(indicesBuffer.getMappedRange()).set(gridIndices);\n indicesBuffer.unmap();\n\n return {\n positions: positionsBuffer,\n joints: jointsBuffer,\n weights: weightsBuffer,\n indices: indicesBuffer,\n };\n};\n\nexport const createSkinnedGridRenderPipeline = (\n device: GPUDevice,\n presentationFormat: GPUTextureFormat,\n vertexShader: string,\n fragmentShader: string,\n bgLayouts: GPUBindGroupLayout[]\n) => {\n const pipeline = device.createRenderPipeline({\n label: 'SkinnedGridRenderer',\n layout: device.createPipelineLayout({\n label: `SkinnedGridRenderer.pipelineLayout`,\n bindGroupLayouts: bgLayouts,\n }),\n vertex: {\n module: device.createShaderModule({\n label: `SkinnedGridRenderer.vertexShader`,\n code: vertexShader,\n }),\n entryPoint: 'vertexMain',\n buffers: [\n // Vertex Positions (positions)\n {\n arrayStride: Float32Array.BYTES_PER_ELEMENT * 2,\n attributes: [\n {\n format: 'float32x2',\n offset: 0,\n shaderLocation: 0,\n },\n ],\n },\n // Bone Indices (joints)\n {\n arrayStride: Uint32Array.BYTES_PER_ELEMENT * 4,\n attributes: [\n {\n format: 'uint32x4',\n offset: 0,\n shaderLocation: 1,\n },\n ],\n },\n // Bone Weights (weights)\n {\n arrayStride: Float32Array.BYTES_PER_ELEMENT * 4,\n attributes: [\n {\n format: 'float32x4',\n offset: 0,\n shaderLocation: 2,\n },\n ],\n },\n ],\n },\n fragment: {\n module: device.createShaderModule({\n label: `SkinnedGridRenderer.fragmentShader`,\n code: fragmentShader,\n }),\n entryPoint: 'fragmentMain',\n targets: [\n {\n format: presentationFormat,\n },\n ],\n },\n primitive: {\n topology: 'line-list',\n },\n });\n return pipeline;\n};\n"},134:function(e,n){"use strict";n.Z="@group(0) @binding(0) var mySampler : sampler;\n@group(0) @binding(1) var myTexture : texture_2d;\n\nstruct VertexOutput {\n @builtin(position) Position : vec4,\n @location(0) fragUV : vec2,\n}\n\n@vertex\nfn vert_main(@builtin(vertex_index) VertexIndex : u32) -> VertexOutput {\n const pos = array(\n vec2( 1.0, 1.0),\n vec2( 1.0, -1.0),\n vec2(-1.0, -1.0),\n vec2( 1.0, 1.0),\n vec2(-1.0, -1.0),\n vec2(-1.0, 1.0),\n );\n\n const uv = array(\n 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vertexMain(input: VertexInput) -> VertexOutput {\n var output: VertexOutput;\n // Compute joint_matrices * inverse_bind_matrices\n let joint0 = joint_matrices[input.joints[0]] * inverse_bind_matrices[input.joints[0]];\n let joint1 = joint_matrices[input.joints[1]] * inverse_bind_matrices[input.joints[1]];\n let joint2 = joint_matrices[input.joints[2]] * inverse_bind_matrices[input.joints[2]];\n let joint3 = joint_matrices[input.joints[3]] * inverse_bind_matrices[input.joints[3]];\n // Compute influence of joint based on weight\n let skin_matrix = \n joint0 * input.weights[0] +\n joint1 * input.weights[1] +\n joint2 * input.weights[2] +\n joint3 * input.weights[3];\n // Position of the vertex relative to our world\n let world_position = vec4(input.position.x, input.position.y, input.position.z, 1.0);\n // Vertex position with model rotation, skinning, and the mesh's node transformation applied.\n let skinned_position = camera_uniforms.model_matrix * skin_matrix * 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D="src/sample/skinnedMesh/main.ts";(s=f||(f={}))[s.NORMAL=0]="NORMAL",s[s.JOINTS=1]="JOINTS",s[s.WEIGHTS=2]="WEIGHTS",(o=l||(l={}))[o.ON=0]="ON",o[o.OFF=1]="OFF";let q=e=>{let n=[0,0,0,0],t=m._E.getScaling(e),r=1/t[0],i=1/t[1],a=1/t[2],s=e[0]*r,o=e[1]*i,u=e[2]*a,c=e[4]*r,d=e[5]*i,f=e[6]*a,l=e[8]*r,p=e[9]*i,h=e[10]*a,g=s+d+h,b=0;return g>0?(b=2*Math.sqrt(g+1),n[3]=.25*b,n[0]=(f-p)/b,n[1]=(l-u)/b,n[2]=(o-c)/b):s>d&&s>h?(b=2*Math.sqrt(1+s-d-h),n[3]=(f-p)/b,n[0]=.25*b,n[1]=(o+c)/b,n[2]=(l+u)/b):d>h?(b=2*Math.sqrt(1+d-s-h),n[3]=(l-u)/b,n[0]=(o+c)/b,n[1]=.25*b,n[2]=(f+p)/b):(b=2*Math.sqrt(1+h-s-d),n[3]=(o-c)/b,n[0]=(l+u)/b,n[1]=(f+p)/b,n[2]=.25*b),n},W=async e=>{let{canvas:n,pageState:t,gui:r}=e,i=await navigator.gpu.requestAdapter(),a=await i.requestDevice();if(!t.active)return;let s=n.getContext("webgpu"),o=window.devicePixelRatio||1;n.width=n.clientWidth*o,n.height=n.clientHeight*o;let u=navigator.gpu.getPreferredCanvasFormat();s.configure({device:a,format:u,alphaMode:"premultiplied"});let c={cameraX:0,cameraY:-5.1,cameraZ:-14.6,objectScale:1,angle:.2,speed:50,object:"Whale",renderMode:"NORMAL",skinMode:"ON"};r.add(c,"object",["Whale","Skinned Grid"]).onChange(()=>{"Skinned Grid"===c.object?(c.cameraX=-10,c.cameraY=0,c.objectScale=1.27):"OFF"===c.skinMode?(c.cameraX=0,c.cameraY=0,c.cameraZ=-11):(c.cameraX=0,c.cameraY=-5.1,c.cameraZ=-14.6)}),r.add(c,"renderMode",["NORMAL","JOINTS","WEIGHTS"]).onChange(()=>{a.queue.writeBuffer(b,0,new Uint32Array([f[c.renderMode]]))}),r.add(c,"skinMode",["ON","OFF"]).onChange(()=>{"Whale"===c.object&&("OFF"===c.skinMode?(c.cameraX=0,c.cameraY=0,c.cameraZ=-11):(c.cameraX=0,c.cameraY=-5.1,c.cameraZ=-14.6)),a.queue.writeBuffer(b,4,new Uint32Array([l[c.skinMode]]))});let d=r.addFolder("Animation Settings");d.add(c,"angle",.05,.5).step(.05),d.add(c,"speed",10,100).step(10);let p=a.createTexture({size:[n.width,n.height],format:"depth24plus",usage:GPUTextureUsage.RENDER_ATTACHMENT}),h=a.createBuffer({size:192,usage:GPUBufferUsage.UNIFORM|GPUBufferUsage.COPY_DST}),g=(0,N.a1)([0],[GPUShaderStage.VERTEX],["buffer"],[{type:"uniform"}],[[{buffer:h}]],"Camera",a),b=a.createBuffer({size:2*Uint32Array.BYTES_PER_ELEMENT,usage:GPUBufferUsage.UNIFORM|GPUBufferUsage.COPY_DST}),y=(0,N.a1)([0],[GPUShaderStage.VERTEX|GPUShaderStage.FRAGMENT],["buffer"],[{type:"uniform"}],[[{buffer:b}]],"General",a),v=a.createBindGroupLayout({label:"NodeUniforms.bindGroupLayout",entries:[{binding:0,buffer:{type:"uniform"},visibility:GPUShaderStage.VERTEX}]}),T=await fetch("../assets/gltf/whale.glb").then(e=>e.arrayBuffer()).then(e=>I(e,a));T.meshes[0].buildRenderPipeline(a,k,k,u,p.format,[g.bindGroupLayout,y.bindGroupLayout,v,C.skinBindGroupLayout]);let G=O(a),w={size:320,usage:GPUBufferUsage.STORAGE|GPUBufferUsage.COPY_DST},x=a.createBuffer(w),S=a.createBuffer(w),B=(0,N.a1)([0,1],[GPUShaderStage.VERTEX,GPUShaderStage.VERTEX],["buffer","buffer"],[{type:"read-only-storage"},{type:"read-only-storage"}],[[{buffer:x},{buffer:S}]],"SkinnedGridJointUniforms",a),E=V(a,u,A.Z,A.Z,[g.bindGroupLayout,y.bindGroupLayout,B.bindGroupLayout]),M=n.width/n.height,U=m._E.perspective(2*Math.PI/5,M,.1,100),L=m._E.ortho(-20,20,-10,10,-100,100),P={colorAttachments:[{view:void 0,clearValue:{r:.3,g:.3,b:.3,a:1},loadOp:"clear",storeOp:"store"}],depthStencilAttachment:{view:p.createView(),depthLoadOp:"clear",depthClearValue:1,depthStoreOp:"store"}},j={colorAttachments:[{view:void 0,clearValue:{r:.3,g:.3,b:.3,a:1},loadOp:"clear",storeOp:"store"}]},_=(e,n)=>{let t=m._E.identity();m._E.rotateZ(t,n,e[0]),m._E.translate(e[0],m.R3.create(4,0,0),t),m._E.rotateZ(t,n,e[1]),m._E.translate(e[1],m.R3.create(4,0,0),t),m._E.rotateZ(t,n,e[2])},F=(e=>{let n=[],t=[];for(let r=0;r<5;r++)n.push(m._E.identity()),t.push(m._E.identity());_(t,0);let i=t.map(e=>m._E.inverse(e));return{transforms:n,bindPoses:t,bindPosesInv:i}})(0);for(let D=0;D{for(let t=0;t(0,p.Tl)({name:"Skinned Mesh",description:"A demonstration of basic gltf loading and mesh skinning, ported from https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html. Mesh data, per vertex attributes, and skin inverseBindMatrices are taken from the json parsed from the binary output of the .glb file. Animations are generated progrmatically, with animated joint matrices updated and passed to shaders per frame via uniform buffers.",init:W,gui:!0,sources:[{name:D.substring(23),contents:"import { makeSample, SampleInit } from '../../components/SampleLayout';\nimport { convertGLBToJSONAndBinary, GLTFSkin } from './glbUtils';\nimport gltfWGSL from './gltf.wgsl';\nimport gridWGSL from './grid.wgsl';\nimport { Mat4, mat4, Quat, vec3 } from 'wgpu-matrix';\nimport { createBindGroupCluster } from '../bitonicSort/utils';\nimport {\n createSkinnedGridBuffers,\n createSkinnedGridRenderPipeline,\n} from './gridUtils';\nimport { gridIndices } from './gridData';\n\nconst MAT4X4_BYTES = 64;\n\ninterface BoneObject {\n transforms: Mat4[];\n bindPoses: Mat4[];\n bindPosesInv: Mat4[];\n}\n\nenum RenderMode {\n NORMAL,\n JOINTS,\n WEIGHTS,\n}\n\nenum SkinMode {\n ON,\n OFF,\n}\n\n// Copied from toji/gl-matrix\nconst getRotation = (mat: Mat4): Quat => {\n // Initialize our output quaternion\n const out = [0, 0, 0, 0];\n // Extract the scaling factor from the final matrix transformation\n // to normalize our rotation;\n const scaling = mat4.getScaling(mat);\n const is1 = 1 / scaling[0];\n const is2 = 1 / scaling[1];\n const is3 = 1 / scaling[2];\n\n // Scale the matrix elements by the scaling factors\n const sm11 = mat[0] * is1;\n const sm12 = mat[1] * is2;\n const sm13 = mat[2] * is3;\n const sm21 = mat[4] * is1;\n const sm22 = mat[5] * is2;\n const sm23 = mat[6] * is3;\n const sm31 = mat[8] * is1;\n const sm32 = mat[9] * is2;\n const sm33 = mat[10] * is3;\n\n // The trace of a square matrix is the sum of its diagonal entries\n // While the matrix trace has many interesting mathematical properties,\n // the primary purpose of the trace is to assess the characteristics of the rotation.\n const trace = sm11 + sm22 + sm33;\n let S = 0;\n\n // If all matrix elements contribute equally to the rotation.\n if (trace > 0) {\n S = Math.sqrt(trace + 1.0) * 2;\n out[3] = 0.25 * S;\n out[0] = (sm23 - sm32) / S;\n out[1] = (sm31 - sm13) / S;\n out[2] = (sm12 - sm21) / S;\n // If the rotation is primarily around the x-axis\n } else if (sm11 > sm22 && sm11 > sm33) {\n S = Math.sqrt(1.0 + sm11 - sm22 - sm33) * 2;\n out[3] = (sm23 - sm32) / S;\n out[0] = 0.25 * S;\n out[1] = (sm12 + sm21) / S;\n out[2] = (sm31 + sm13) / S;\n // If rotation is primarily around the y-axis\n } else if (sm22 > sm33) {\n S = Math.sqrt(1.0 + sm22 - sm11 - sm33) * 2;\n out[3] = (sm31 - sm13) / S;\n out[0] = (sm12 + sm21) / S;\n out[1] = 0.25 * S;\n out[2] = (sm23 + sm32) / S;\n // If the rotation is primarily around the z-axis\n } else {\n S = Math.sqrt(1.0 + sm33 - sm11 - sm22) * 2;\n out[3] = (sm12 - sm21) / S;\n out[0] = (sm31 + sm13) / S;\n out[1] = (sm23 + sm32) / S;\n out[2] = 0.25 * S;\n }\n\n return out;\n};\n\nconst init: SampleInit = async ({ canvas, pageState, gui }) => {\n //Normal setup\n const adapter = await navigator.gpu.requestAdapter();\n const device = await adapter.requestDevice();\n\n if (!pageState.active) return;\n const context = canvas.getContext('webgpu') as GPUCanvasContext;\n\n const devicePixelRatio = window.devicePixelRatio || 1;\n canvas.width = canvas.clientWidth * devicePixelRatio;\n canvas.height = canvas.clientHeight * devicePixelRatio;\n const presentationFormat = navigator.gpu.getPreferredCanvasFormat();\n\n context.configure({\n device,\n format: presentationFormat,\n alphaMode: 'premultiplied',\n });\n\n const settings = {\n cameraX: 0,\n cameraY: -5.1,\n cameraZ: -14.6,\n objectScale: 1,\n angle: 0.2,\n speed: 50,\n object: 'Whale',\n renderMode: 'NORMAL',\n skinMode: 'ON',\n };\n\n // Determine whether we want to render our whale or our skinned grid\n gui.add(settings, 'object', ['Whale', 'Skinned Grid']).onChange(() => {\n if (settings.object === 'Skinned Grid') {\n settings.cameraX = -10;\n settings.cameraY = 0;\n settings.objectScale = 1.27;\n } else {\n if (settings.skinMode === 'OFF') {\n settings.cameraX = 0;\n settings.cameraY = 0;\n settings.cameraZ = -11;\n } else {\n settings.cameraX = 0;\n settings.cameraY = -5.1;\n settings.cameraZ = -14.6;\n }\n }\n });\n\n // Output the mesh normals, its joints, or the weights that influence the movement of the joints\n gui\n .add(settings, 'renderMode', ['NORMAL', 'JOINTS', 'WEIGHTS'])\n .onChange(() => {\n device.queue.writeBuffer(\n generalUniformsBuffer,\n 0,\n new Uint32Array([RenderMode[settings.renderMode]])\n );\n });\n // Determine whether the mesh is static or whether skinning is activated\n gui.add(settings, 'skinMode', ['ON', 'OFF']).onChange(() => {\n if (settings.object === 'Whale') {\n if (settings.skinMode === 'OFF') {\n settings.cameraX = 0;\n settings.cameraY = 0;\n settings.cameraZ = -11;\n } else {\n settings.cameraX = 0;\n settings.cameraY = -5.1;\n settings.cameraZ = -14.6;\n }\n }\n device.queue.writeBuffer(\n generalUniformsBuffer,\n 4,\n new Uint32Array([SkinMode[settings.skinMode]])\n );\n });\n const animFolder = gui.addFolder('Animation Settings');\n animFolder.add(settings, 'angle', 0.05, 0.5).step(0.05);\n animFolder.add(settings, 'speed', 10, 100).step(10);\n\n const depthTexture = device.createTexture({\n size: [canvas.width, canvas.height],\n format: 'depth24plus',\n usage: GPUTextureUsage.RENDER_ATTACHMENT,\n });\n\n const cameraBuffer = device.createBuffer({\n size: MAT4X4_BYTES * 3,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n\n const cameraBGCluster = createBindGroupCluster(\n [0],\n [GPUShaderStage.VERTEX],\n ['buffer'],\n [{ type: 'uniform' }],\n [[{ buffer: cameraBuffer }]],\n 'Camera',\n device\n );\n\n const generalUniformsBuffer = device.createBuffer({\n size: Uint32Array.BYTES_PER_ELEMENT * 2,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n\n const generalUniformsBGCLuster = createBindGroupCluster(\n [0],\n [GPUShaderStage.VERTEX | GPUShaderStage.FRAGMENT],\n ['buffer'],\n [{ type: 'uniform' }],\n [[{ buffer: generalUniformsBuffer }]],\n 'General',\n device\n );\n\n // Same bindGroupLayout as in main file.\n const nodeUniformsBindGroupLayout = device.createBindGroupLayout({\n label: 'NodeUniforms.bindGroupLayout',\n entries: [\n {\n binding: 0,\n buffer: {\n type: 'uniform',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n ],\n });\n\n // Fetch whale resources from the glb file\n const whaleScene = await fetch('../assets/gltf/whale.glb')\n .then((res) => res.arrayBuffer())\n .then((buffer) => convertGLBToJSONAndBinary(buffer, device));\n\n // Builds a render pipeline for our whale mesh\n // Since we are building a lightweight gltf parser around a gltf scene with a known\n // quantity of meshes, we only build a renderPipeline for the singular mesh present\n // within our scene. A more robust gltf parser would loop through all the meshes,\n // cache replicated pipelines, and perform other optimizations.\n whaleScene.meshes[0].buildRenderPipeline(\n device,\n gltfWGSL,\n gltfWGSL,\n presentationFormat,\n depthTexture.format,\n [\n cameraBGCluster.bindGroupLayout,\n generalUniformsBGCLuster.bindGroupLayout,\n nodeUniformsBindGroupLayout,\n GLTFSkin.skinBindGroupLayout,\n ]\n );\n\n // Create skinned grid resources\n const skinnedGridVertexBuffers = createSkinnedGridBuffers(device);\n // Buffer for our uniforms, joints, and inverse bind matrices\n const skinnedGridUniformBufferUsage: GPUBufferDescriptor = {\n // 5 4x4 matrices, one for each bone\n size: MAT4X4_BYTES * 5,\n usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST,\n };\n const skinnedGridJointUniformBuffer = device.createBuffer(\n skinnedGridUniformBufferUsage\n );\n const skinnedGridInverseBindUniformBuffer = device.createBuffer(\n skinnedGridUniformBufferUsage\n );\n const skinnedGridBoneBGCluster = createBindGroupCluster(\n [0, 1],\n [GPUShaderStage.VERTEX, GPUShaderStage.VERTEX],\n ['buffer', 'buffer'],\n [{ type: 'read-only-storage' }, { type: 'read-only-storage' }],\n [\n [\n { buffer: skinnedGridJointUniformBuffer },\n { buffer: skinnedGridInverseBindUniformBuffer },\n ],\n ],\n 'SkinnedGridJointUniforms',\n device\n );\n const skinnedGridPipeline = createSkinnedGridRenderPipeline(\n device,\n presentationFormat,\n gridWGSL,\n gridWGSL,\n [\n cameraBGCluster.bindGroupLayout,\n generalUniformsBGCLuster.bindGroupLayout,\n skinnedGridBoneBGCluster.bindGroupLayout,\n ]\n );\n\n // Global Calc\n const aspect = canvas.width / canvas.height;\n const perspectiveProjection = mat4.perspective(\n (2 * Math.PI) / 5,\n aspect,\n 0.1,\n 100.0\n );\n\n const orthographicProjection = mat4.ortho(-20, 20, -10, 10, -100, 100);\n\n function getProjectionMatrix() {\n if (settings.object !== 'Skinned Grid') {\n return perspectiveProjection as Float32Array;\n }\n return orthographicProjection as Float32Array;\n }\n\n function getViewMatrix() {\n const viewMatrix = mat4.identity();\n if (settings.object === 'Skinned Grid') {\n mat4.translate(\n viewMatrix,\n vec3.fromValues(\n settings.cameraX * settings.objectScale,\n settings.cameraY * settings.objectScale,\n settings.cameraZ\n ),\n viewMatrix\n );\n } else {\n mat4.translate(\n viewMatrix,\n vec3.fromValues(settings.cameraX, settings.cameraY, settings.cameraZ),\n viewMatrix\n );\n }\n return viewMatrix as Float32Array;\n }\n\n function getModelMatrix() {\n const modelMatrix = mat4.identity();\n const scaleVector = vec3.fromValues(\n settings.objectScale,\n settings.objectScale,\n settings.objectScale\n );\n mat4.scale(modelMatrix, scaleVector, modelMatrix);\n if (settings.object === 'Whale') {\n mat4.rotateY(modelMatrix, (Date.now() / 1000) * 0.5, modelMatrix);\n }\n return modelMatrix as Float32Array;\n }\n\n // Pass Descriptor for GLTFs\n const gltfRenderPassDescriptor: GPURenderPassDescriptor = {\n colorAttachments: [\n {\n view: undefined, // Assigned later\n\n clearValue: { r: 0.3, g: 0.3, b: 0.3, a: 1.0 },\n loadOp: 'clear',\n storeOp: 'store',\n },\n ],\n depthStencilAttachment: {\n view: depthTexture.createView(),\n depthLoadOp: 'clear',\n depthClearValue: 1.0,\n depthStoreOp: 'store',\n },\n };\n\n // Pass descriptor for grid with no depth testing\n const skinnedGridRenderPassDescriptor: GPURenderPassDescriptor = {\n colorAttachments: [\n {\n view: undefined, // Assigned later\n\n clearValue: { r: 0.3, g: 0.3, b: 0.3, a: 1.0 },\n loadOp: 'clear',\n storeOp: 'store',\n },\n ],\n };\n\n const animSkinnedGrid = (boneTransforms: Mat4[], angle: number) => {\n const m = mat4.identity();\n mat4.rotateZ(m, angle, boneTransforms[0]);\n mat4.translate(boneTransforms[0], vec3.create(4, 0, 0), m);\n mat4.rotateZ(m, angle, boneTransforms[1]);\n mat4.translate(boneTransforms[1], vec3.create(4, 0, 0), m);\n mat4.rotateZ(m, angle, boneTransforms[2]);\n };\n\n // Create a group of bones\n // Each index associates an actual bone to its transforms, bindPoses, uniforms, etc\n const createBoneCollection = (numBones: number): BoneObject => {\n // Initial bone transformation\n const transforms: Mat4[] = [];\n // Bone bind poses, an extra matrix per joint/bone that represents the starting point\n // of the bone before any transformations are applied\n const bindPoses: Mat4[] = [];\n // Create a transform, bind pose, and inverse bind pose for each bone\n for (let i = 0; i < numBones; i++) {\n transforms.push(mat4.identity());\n bindPoses.push(mat4.identity());\n }\n\n // Get initial bind pose positions\n animSkinnedGrid(bindPoses, 0);\n const bindPosesInv = bindPoses.map((bindPose) => {\n return mat4.inverse(bindPose);\n });\n\n return {\n transforms,\n bindPoses,\n bindPosesInv,\n };\n };\n\n // Create bones of the skinned grid and write the inverse bind positions to\n // the skinned grid's inverse bind matrix array\n const gridBoneCollection = createBoneCollection(5);\n for (let i = 0; i < gridBoneCollection.bindPosesInv.length; i++) {\n device.queue.writeBuffer(\n skinnedGridInverseBindUniformBuffer,\n i * 64,\n gridBoneCollection.bindPosesInv[i] as Float32Array\n );\n }\n\n // A map that maps a joint index to the original matrix transformation of a bone\n const origMatrices = new Map();\n const animWhaleSkin = (skin: GLTFSkin, angle: number) => {\n for (let i = 0; i < skin.joints.length; i++) {\n // Index into the current joint\n const joint = skin.joints[i];\n // If our map does\n if (!origMatrices.has(joint)) {\n origMatrices.set(joint, whaleScene.nodes[joint].source.getMatrix());\n }\n // Get the original position, rotation, and scale of the current joint\n const origMatrix = origMatrices.get(joint);\n let m = mat4.create();\n // Depending on which bone we are accessing, apply a specific rotation to the bone's original\n // transformation to animate it\n if (joint === 1 || joint === 0) {\n m = mat4.rotateY(origMatrix, -angle);\n } else if (joint === 3 || joint === 4) {\n m = mat4.rotateX(origMatrix, joint === 3 ? angle : -angle);\n } else {\n m = mat4.rotateZ(origMatrix, angle);\n }\n // Apply the current transformation to the transform values within the relevant nodes\n // (these nodes, of course, each being nodes that represent joints/bones)\n whaleScene.nodes[joint].source.position = mat4.getTranslation(m);\n whaleScene.nodes[joint].source.scale = mat4.getScaling(m);\n whaleScene.nodes[joint].source.rotation = getRotation(m);\n }\n };\n\n function frame() {\n // Sample is no longer the active page.\n if (!pageState.active) return;\n\n // Calculate camera matrices\n const projectionMatrix = getProjectionMatrix();\n const viewMatrix = getViewMatrix();\n const modelMatrix = getModelMatrix();\n\n // Calculate bone transformation\n const t = (Date.now() / 20000) * settings.speed;\n const angle = Math.sin(t) * settings.angle;\n // Compute Transforms when angle is applied\n animSkinnedGrid(gridBoneCollection.transforms, angle);\n\n // Write to mvp to camera buffer\n device.queue.writeBuffer(\n cameraBuffer,\n 0,\n projectionMatrix.buffer,\n projectionMatrix.byteOffset,\n projectionMatrix.byteLength\n );\n\n device.queue.writeBuffer(\n cameraBuffer,\n 64,\n viewMatrix.buffer,\n viewMatrix.byteOffset,\n viewMatrix.byteLength\n );\n\n device.queue.writeBuffer(\n cameraBuffer,\n 128,\n modelMatrix.buffer,\n modelMatrix.byteOffset,\n modelMatrix.byteLength\n );\n\n // Write to skinned grid bone uniform buffer\n for (let i = 0; i < gridBoneCollection.transforms.length; i++) {\n device.queue.writeBuffer(\n skinnedGridJointUniformBuffer,\n i * 64,\n gridBoneCollection.transforms[i] as Float32Array\n );\n }\n\n // Difference between these two render passes is just the presence of depthTexture\n gltfRenderPassDescriptor.colorAttachments[0].view = context\n .getCurrentTexture()\n .createView();\n\n skinnedGridRenderPassDescriptor.colorAttachments[0].view = context\n .getCurrentTexture()\n .createView();\n\n // Update node matrixes\n for (const scene of whaleScene.scenes) {\n scene.root.updateWorldMatrix(device);\n }\n\n // Updates skins (we index into skins in the renderer, which is not the best approach but hey)\n animWhaleSkin(whaleScene.skins[0], Math.sin(t) * settings.angle);\n // Node 6 should be the only node with a drawable mesh so hopefully this works fine\n whaleScene.skins[0].update(device, 6, whaleScene.nodes);\n\n const commandEncoder = device.createCommandEncoder();\n if (settings.object === 'Whale') {\n const passEncoder = commandEncoder.beginRenderPass(\n gltfRenderPassDescriptor\n );\n for (const scene of whaleScene.scenes) {\n scene.root.renderDrawables(passEncoder, [\n cameraBGCluster.bindGroups[0],\n generalUniformsBGCLuster.bindGroups[0],\n ]);\n }\n passEncoder.end();\n } else {\n // Our skinned grid isn't checking for depth, so we pass it\n // a separate render descriptor that does not take in a depth texture\n const passEncoder = commandEncoder.beginRenderPass(\n skinnedGridRenderPassDescriptor\n );\n passEncoder.setPipeline(skinnedGridPipeline);\n passEncoder.setBindGroup(0, cameraBGCluster.bindGroups[0]);\n passEncoder.setBindGroup(1, generalUniformsBGCLuster.bindGroups[0]);\n passEncoder.setBindGroup(2, skinnedGridBoneBGCluster.bindGroups[0]);\n // Pass in vertex and index buffers generated from our static skinned grid\n // data at ./gridData.ts\n passEncoder.setVertexBuffer(0, skinnedGridVertexBuffers.positions);\n passEncoder.setVertexBuffer(1, skinnedGridVertexBuffers.joints);\n passEncoder.setVertexBuffer(2, skinnedGridVertexBuffers.weights);\n passEncoder.setIndexBuffer(skinnedGridVertexBuffers.indices, 'uint16');\n passEncoder.drawIndexed(gridIndices.length, 1);\n passEncoder.end();\n }\n\n device.queue.submit([commandEncoder.finish()]);\n\n requestAnimationFrame(frame);\n }\n requestAnimationFrame(frame);\n};\n\nconst skinnedMesh: () => JSX.Element = () =>\n makeSample({\n name: 'Skinned Mesh',\n description:\n 'A demonstration of basic gltf loading and mesh skinning, ported from https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html. Mesh data, per vertex attributes, and skin inverseBindMatrices are taken from the json parsed from the binary output of the .glb file. Animations are generated progrmatically, with animated joint matrices updated and passed to shaders per frame via uniform buffers.',\n init,\n gui: true,\n sources: [\n {\n name: __filename.substring(__dirname.length + 1),\n contents: __SOURCE__,\n },\n {\n name: './gridData.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./gridData.ts').default,\n },\n {\n name: './gridUtils.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./gridUtils.ts').default,\n },\n {\n name: './grid.wgsl',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./grid.wgsl').default,\n },\n {\n name: './gltf.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./gltf.ts').default,\n },\n {\n name: './glbUtils.ts',\n // eslint-disable-next-line @typescript-eslint/no-var-requires\n contents: require('!!raw-loader!./glbUtils.ts').default,\n },\n {\n name: './gltf.wgsl',\n contents: gltfWGSL,\n },\n ],\n filename: __filename,\n });\n\nexport default skinnedMesh;\n"},{name:"./gridData.ts",contents:t(6270).Z},{name:"./gridUtils.ts",contents:t(9483).Z},{name:"./grid.wgsl",contents:t(2624).Z},{name:"./gltf.ts",contents:t(6370).Z},{name:"./glbUtils.ts",contents:t(7674).Z},{name:"./gltf.wgsl",contents:k}],filename:D});var z=Y},9147:function(e){e.exports={canvasContainer:"SampleLayout_canvasContainer__zRR_l",sourceFileNav:"SampleLayout_sourceFileNav__ml48P",sourceFileScrollContainer:"SampleLayout_sourceFileScrollContainer__LsNEm",sourceFileContainer:"SampleLayout_sourceFileContainer__3s84x"}},7674:function(e,n){"use strict";n.Z="import { Quat } from 'wgpu-matrix/dist/2.x/quat';\nimport { Accessor, BufferView, GlTf, Scene } from './gltf';\nimport { Mat4, Vec3, mat4 } from 'wgpu-matrix';\n\n//NOTE: GLTF code is not generally extensible to all gltf models\n// Modified from Will Usher code found at this link https://www.willusher.io/graphics/2023/05/16/0-to-gltf-first-mesh\n\n// Associates the mode paramete of a gltf primitive object with the primitive's intended render mode\nenum GLTFRenderMode {\n POINTS = 0,\n LINE = 1,\n LINE_LOOP = 2,\n LINE_STRIP = 3,\n TRIANGLES = 4,\n TRIANGLE_STRIP = 5,\n TRIANGLE_FAN = 6,\n}\n\n// Determines how to interpret each element of the structure that is accessed from our accessor\nenum GLTFDataComponentType {\n BYTE = 5120,\n UNSIGNED_BYTE = 5121,\n SHORT = 5122,\n UNSIGNED_SHORT = 5123,\n INT = 5124,\n UNSIGNED_INT = 5125,\n FLOAT = 5126,\n DOUBLE = 5130,\n}\n\n// Determines how to interpret the structure of the values accessed by an accessor\nenum GLTFDataStructureType {\n SCALAR = 0,\n VEC2 = 1,\n VEC3 = 2,\n VEC4 = 3,\n MAT2 = 4,\n MAT3 = 5,\n MAT4 = 6,\n}\n\nexport const alignTo = (val: number, align: number): number => {\n return Math.floor((val + align - 1) / align) * align;\n};\n\nconst parseGltfDataStructureType = (type: string) => {\n switch (type) {\n case 'SCALAR':\n return GLTFDataStructureType.SCALAR;\n case 'VEC2':\n return GLTFDataStructureType.VEC2;\n case 'VEC3':\n return GLTFDataStructureType.VEC3;\n case 'VEC4':\n return GLTFDataStructureType.VEC4;\n case 'MAT2':\n return GLTFDataStructureType.MAT2;\n case 'MAT3':\n return GLTFDataStructureType.MAT3;\n case 'MAT4':\n return GLTFDataStructureType.MAT4;\n default:\n throw Error(`Unhandled glTF Type ${type}`);\n }\n};\n\nconst gltfDataStructureTypeNumComponents = (type: GLTFDataStructureType) => {\n switch (type) {\n case GLTFDataStructureType.SCALAR:\n return 1;\n case GLTFDataStructureType.VEC2:\n return 2;\n case GLTFDataStructureType.VEC3:\n return 3;\n case GLTFDataStructureType.VEC4:\n case GLTFDataStructureType.MAT2:\n return 4;\n case GLTFDataStructureType.MAT3:\n return 9;\n case GLTFDataStructureType.MAT4:\n return 16;\n default:\n throw Error(`Invalid glTF Type ${type}`);\n }\n};\n\n// Note: only returns non-normalized type names,\n// so byte/ubyte = sint8/uint8, not snorm8/unorm8, same for ushort\nconst gltfVertexType = (\n componentType: GLTFDataComponentType,\n type: GLTFDataStructureType\n) => {\n let typeStr = null;\n switch (componentType) {\n case GLTFDataComponentType.BYTE:\n typeStr = 'sint8';\n break;\n case GLTFDataComponentType.UNSIGNED_BYTE:\n typeStr = 'uint8';\n break;\n case GLTFDataComponentType.SHORT:\n typeStr = 'sint16';\n break;\n case GLTFDataComponentType.UNSIGNED_SHORT:\n typeStr = 'uint16';\n break;\n case GLTFDataComponentType.INT:\n typeStr = 'int32';\n break;\n case GLTFDataComponentType.UNSIGNED_INT:\n typeStr = 'uint32';\n break;\n case GLTFDataComponentType.FLOAT:\n typeStr = 'float32';\n break;\n default:\n throw Error(`Unrecognized or unsupported glTF type ${componentType}`);\n }\n\n switch (gltfDataStructureTypeNumComponents(type)) {\n case 1:\n return typeStr;\n case 2:\n return typeStr + 'x2';\n case 3:\n return typeStr + 'x3';\n case 4:\n return typeStr + 'x4';\n // Vertex attributes should never be a matrix type, so we should not hit this\n // unless we're passed an improperly created gltf file\n default:\n throw Error(`Invalid number of components for gltfType: ${type}`);\n }\n};\n\nconst gltfElementSize = (\n componentType: GLTFDataComponentType,\n type: GLTFDataStructureType\n) => {\n let componentSize = 0;\n switch (componentType) {\n case GLTFDataComponentType.BYTE:\n componentSize = 1;\n break;\n case GLTFDataComponentType.UNSIGNED_BYTE:\n componentSize = 1;\n break;\n case GLTFDataComponentType.SHORT:\n componentSize = 2;\n break;\n case GLTFDataComponentType.UNSIGNED_SHORT:\n componentSize = 2;\n break;\n case GLTFDataComponentType.INT:\n componentSize = 4;\n break;\n case GLTFDataComponentType.UNSIGNED_INT:\n componentSize = 4;\n break;\n case GLTFDataComponentType.FLOAT:\n componentSize = 4;\n break;\n case GLTFDataComponentType.DOUBLE:\n componentSize = 8;\n break;\n default:\n throw Error('Unrecognized GLTF Component Type?');\n }\n return gltfDataStructureTypeNumComponents(type) * componentSize;\n};\n\n// Convert differently depending on if the shader is a vertex or compute shader\nconst convertGPUVertexFormatToWGSLFormat = (vertexFormat: GPUVertexFormat) => {\n switch (vertexFormat) {\n case 'float32': {\n return 'f32';\n }\n case 'float32x2': {\n return 'vec2';\n }\n case 'float32x3': {\n return 'vec3';\n }\n case 'float32x4': {\n return 'vec4';\n }\n case 'uint32': {\n return 'u32';\n }\n case 'uint32x2': {\n return 'vec2';\n }\n case 'uint32x3': {\n return 'vec3';\n }\n case 'uint32x4': {\n return 'vec4';\n }\n case 'uint8x2': {\n return 'vec2';\n }\n case 'uint8x4': {\n return 'vec4';\n }\n case 'uint16x4': {\n return 'vec4';\n }\n case 'uint16x2': {\n return 'vec2';\n }\n default: {\n return 'f32';\n }\n }\n};\n\nexport class GLTFBuffer {\n buffer: Uint8Array;\n constructor(buffer: ArrayBuffer, offset: number, size: number) {\n this.buffer = new Uint8Array(buffer, offset, size);\n }\n}\n\nexport class GLTFBufferView {\n byteLength: number;\n byteStride: number;\n view: Uint8Array;\n needsUpload: boolean;\n gpuBuffer: GPUBuffer;\n usage: number;\n constructor(buffer: GLTFBuffer, view: BufferView) {\n this.byteLength = view['byteLength'];\n this.byteStride = 0;\n if (view['byteStride'] !== undefined) {\n this.byteStride = view['byteStride'];\n }\n // Create the buffer view. Note that subarray creates a new typed\n // view over the same array buffer, we do not make a copy here.\n let viewOffset = 0;\n if (view['byteOffset'] !== undefined) {\n viewOffset = view['byteOffset'];\n }\n // NOTE: This creates a uint8array view into the buffer!\n // When we call .buffer on this view, it will give us back the original array buffer\n // Accordingly, when converting our buffer from a uint8array to a float32array representation\n // we need to apply the byte offset of our view when creating our buffer\n // ie new Float32Array(this.view.buffer, this.view.byteOffset, this.view.byteLength)\n this.view = buffer.buffer.subarray(\n viewOffset,\n viewOffset + this.byteLength\n );\n\n this.needsUpload = false;\n this.gpuBuffer = null;\n this.usage = 0;\n }\n\n addUsage(usage: number) {\n this.usage = this.usage | usage;\n }\n\n upload(device: GPUDevice) {\n // Note: must align to 4 byte size when mapped at creation is true\n const buf: GPUBuffer = device.createBuffer({\n size: alignTo(this.view.byteLength, 4),\n usage: this.usage,\n mappedAtCreation: true,\n });\n new Uint8Array(buf.getMappedRange()).set(this.view);\n buf.unmap();\n this.gpuBuffer = buf;\n this.needsUpload = false;\n }\n}\n\nexport class GLTFAccessor {\n count: number;\n componentType: GLTFDataComponentType;\n structureType: GLTFDataStructureType;\n view: GLTFBufferView;\n byteOffset: number;\n constructor(view: GLTFBufferView, accessor: Accessor) {\n this.count = accessor['count'];\n this.componentType = accessor['componentType'];\n this.structureType = parseGltfDataStructureType(accessor['type']);\n this.view = view;\n this.byteOffset = 0;\n if (accessor['byteOffset'] !== undefined) {\n this.byteOffset = accessor['byteOffset'];\n }\n }\n\n get byteStride() {\n const elementSize = gltfElementSize(this.componentType, this.structureType);\n return Math.max(elementSize, this.view.byteStride);\n }\n\n get byteLength() {\n return this.count * this.byteStride;\n }\n\n // Get the vertex attribute type for accessors that are used as vertex attributes\n get vertexType() {\n return gltfVertexType(this.componentType, this.structureType);\n }\n}\n\ninterface AttributeMapInterface {\n [key: string]: GLTFAccessor;\n}\n\nexport class GLTFPrimitive {\n topology: GLTFRenderMode;\n renderPipeline: GPURenderPipeline;\n private attributeMap: AttributeMapInterface;\n private attributes: string[] = [];\n constructor(\n topology: GLTFRenderMode,\n attributeMap: AttributeMapInterface,\n attributes: string[]\n ) {\n this.topology = topology;\n this.renderPipeline = null;\n // Maps attribute names to accessors\n this.attributeMap = attributeMap;\n this.attributes = attributes;\n\n for (const key in this.attributeMap) {\n this.attributeMap[key].view.needsUpload = true;\n if (key === 'INDICES') {\n this.attributeMap['INDICES'].view.addUsage(GPUBufferUsage.INDEX);\n continue;\n }\n this.attributeMap[key].view.addUsage(GPUBufferUsage.VERTEX);\n }\n }\n\n buildRenderPipeline(\n device: GPUDevice,\n vertexShader: string,\n fragmentShader: string,\n colorFormat: GPUTextureFormat,\n depthFormat: GPUTextureFormat,\n bgLayouts: GPUBindGroupLayout[],\n label: string\n ) {\n // For now, just check if the attributeMap contains a given attribute using map.has(), and add it if it does\n // POSITION, NORMAL, TEXCOORD_0, JOINTS_0, WEIGHTS_0 for order\n // Vertex attribute state and shader stage\n let VertexInputShaderString = `struct VertexInput {\\n`;\n const vertexBuffers: GPUVertexBufferLayout[] = this.attributes.map(\n (attr, idx) => {\n const vertexFormat: GPUVertexFormat =\n this.attributeMap[attr].vertexType;\n const attrString = attr.toLowerCase().replace(/_0$/, '');\n VertexInputShaderString += `\\t@location(${idx}) ${attrString}: ${convertGPUVertexFormatToWGSLFormat(\n vertexFormat\n )},\\n`;\n return {\n arrayStride: this.attributeMap[attr].byteStride,\n attributes: [\n {\n format: this.attributeMap[attr].vertexType,\n offset: this.attributeMap[attr].byteOffset,\n shaderLocation: idx,\n },\n ],\n } as GPUVertexBufferLayout;\n }\n );\n VertexInputShaderString += '}';\n\n const vertexState: GPUVertexState = {\n // Shader stage info\n module: device.createShaderModule({\n code: VertexInputShaderString + vertexShader,\n }),\n entryPoint: 'vertexMain',\n buffers: vertexBuffers,\n };\n\n const fragmentState: GPUFragmentState = {\n // Shader info\n module: device.createShaderModule({\n code: VertexInputShaderString + fragmentShader,\n }),\n entryPoint: 'fragmentMain',\n // Output render target info\n targets: [{ format: colorFormat }],\n };\n\n // Our loader only supports triangle lists and strips, so by default we set\n // the primitive topology to triangle list, and check if it's instead a triangle strip\n const primitive: GPUPrimitiveState = { topology: 'triangle-list' };\n if (this.topology == GLTFRenderMode.TRIANGLE_STRIP) {\n primitive.topology = 'triangle-strip';\n primitive.stripIndexFormat = this.attributeMap['INDICES'].vertexType;\n }\n\n const layout: GPUPipelineLayout = device.createPipelineLayout({\n bindGroupLayouts: bgLayouts,\n label: `${label}.pipelineLayout`,\n });\n\n const rpDescript: GPURenderPipelineDescriptor = {\n layout: layout,\n label: `${label}.pipeline`,\n vertex: vertexState,\n fragment: fragmentState,\n primitive: primitive,\n depthStencil: {\n format: depthFormat,\n depthWriteEnabled: true,\n depthCompare: 'less',\n },\n };\n\n this.renderPipeline = device.createRenderPipeline(rpDescript);\n }\n\n render(renderPassEncoder: GPURenderPassEncoder, bindGroups: GPUBindGroup[]) {\n renderPassEncoder.setPipeline(this.renderPipeline);\n bindGroups.forEach((bg, idx) => {\n renderPassEncoder.setBindGroup(idx, bg);\n });\n\n //if skin do something with bone bind group\n this.attributes.map((attr, idx) => {\n renderPassEncoder.setVertexBuffer(\n idx,\n this.attributeMap[attr].view.gpuBuffer,\n this.attributeMap[attr].byteOffset,\n this.attributeMap[attr].byteLength\n );\n });\n\n if (this.attributeMap['INDICES']) {\n renderPassEncoder.setIndexBuffer(\n this.attributeMap['INDICES'].view.gpuBuffer,\n this.attributeMap['INDICES'].vertexType,\n this.attributeMap['INDICES'].byteOffset,\n this.attributeMap['INDICES'].byteLength\n );\n renderPassEncoder.drawIndexed(this.attributeMap['INDICES'].count);\n } else {\n renderPassEncoder.draw(this.attributeMap['POSITION'].count);\n }\n }\n}\n\nexport class GLTFMesh {\n name: string;\n primitives: GLTFPrimitive[];\n constructor(name: string, primitives: GLTFPrimitive[]) {\n this.name = name;\n this.primitives = primitives;\n }\n\n buildRenderPipeline(\n device: GPUDevice,\n vertexShader: string,\n fragmentShader: string,\n colorFormat: GPUTextureFormat,\n depthFormat: GPUTextureFormat,\n bgLayouts: GPUBindGroupLayout[]\n ) {\n // We take a pretty simple approach to start. Just loop through all the primitives and\n // build their respective render pipelines\n for (let i = 0; i < this.primitives.length; ++i) {\n this.primitives[i].buildRenderPipeline(\n device,\n vertexShader,\n fragmentShader,\n colorFormat,\n depthFormat,\n bgLayouts,\n `PrimitivePipeline${i}`\n );\n }\n }\n\n render(renderPassEncoder: GPURenderPassEncoder, bindGroups: GPUBindGroup[]) {\n // We take a pretty simple approach to start. Just loop through all the primitives and\n // call their individual draw methods\n for (let i = 0; i < this.primitives.length; ++i) {\n this.primitives[i].render(renderPassEncoder, bindGroups);\n }\n }\n}\n\nexport const validateGLBHeader = (header: DataView) => {\n if (header.getUint32(0, true) != 0x46546c67) {\n throw Error('Provided file is not a glB file');\n }\n if (header.getUint32(4, true) != 2) {\n throw Error('Provided file is glTF 2.0 file');\n }\n};\n\nexport const validateBinaryHeader = (header: Uint32Array) => {\n if (header[1] != 0x004e4942) {\n throw Error(\n 'Invalid glB: The second chunk of the glB file is not a binary chunk!'\n );\n }\n};\n\ntype TempReturn = {\n meshes: GLTFMesh[];\n nodes: GLTFNode[];\n scenes: GLTFScene[];\n skins: GLTFSkin[];\n};\n\nexport class BaseTransformation {\n position: Vec3;\n rotation: Quat;\n scale: Vec3;\n constructor(\n // Identity translation vec3\n position = [0, 0, 0],\n // Identity quaternion\n rotation = [0, 0, 0, 1],\n // Identity scale vec3\n scale = [1, 1, 1]\n ) {\n this.position = position;\n this.rotation = rotation;\n this.scale = scale;\n }\n getMatrix(): Mat4 {\n // Analagous to let transformationMatrix: mat4x4f = translation * rotation * scale;\n const dst = mat4.identity();\n // Scale the transformation Matrix\n mat4.scale(dst, this.scale, dst);\n // Calculate the rotationMatrix from the quaternion\n const rotationMatrix = mat4.fromQuat(this.rotation);\n // Apply the rotation Matrix to the scaleMatrix (rotMat * scaleMat)\n mat4.multiply(rotationMatrix, dst, dst);\n // Translate the transformationMatrix\n mat4.translate(dst, this.position, dst);\n return dst;\n }\n}\n\nexport class GLTFNode {\n name: string;\n source: BaseTransformation;\n parent: GLTFNode | null;\n children: GLTFNode[];\n // Transforms all node's children in the node's local space, with node itself acting as the origin\n localMatrix: Mat4;\n worldMatrix: Mat4;\n // List of Meshes associated with this node\n drawables: GLTFMesh[];\n test = 0;\n skin?: GLTFSkin;\n private nodeTransformGPUBuffer: GPUBuffer;\n private nodeTransformBindGroup: GPUBindGroup;\n\n constructor(\n device: GPUDevice,\n bgLayout: GPUBindGroupLayout,\n source: BaseTransformation,\n name?: string,\n skin?: GLTFSkin\n ) {\n this.name = name\n ? name\n : `node_${source.position} ${source.rotation} ${source.scale}`;\n this.source = source;\n this.parent = null;\n this.children = [];\n this.localMatrix = mat4.identity();\n this.worldMatrix = mat4.identity();\n this.drawables = [];\n this.nodeTransformGPUBuffer = device.createBuffer({\n size: Float32Array.BYTES_PER_ELEMENT * 16,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n this.nodeTransformBindGroup = device.createBindGroup({\n layout: bgLayout,\n entries: [\n {\n binding: 0,\n resource: {\n buffer: this.nodeTransformGPUBuffer,\n },\n },\n ],\n });\n this.skin = skin;\n }\n\n setParent(parent: GLTFNode) {\n if (this.parent) {\n this.parent.removeChild(this);\n this.parent = null;\n }\n parent.addChild(this);\n this.parent = parent;\n }\n\n updateWorldMatrix(device: GPUDevice, parentWorldMatrix?: Mat4) {\n // Get local transform of this particular node, and if the node has a parent,\n // multiply it against the parent's transform matrix to get transformMatrix relative to world.\n this.localMatrix = this.source.getMatrix();\n if (parentWorldMatrix) {\n mat4.multiply(parentWorldMatrix, this.localMatrix, this.worldMatrix);\n } else {\n mat4.copy(this.localMatrix, this.worldMatrix);\n }\n const worldMatrix = this.worldMatrix as Float32Array;\n device.queue.writeBuffer(\n this.nodeTransformGPUBuffer,\n 0,\n worldMatrix.buffer,\n worldMatrix.byteOffset,\n worldMatrix.byteLength\n );\n for (const child of this.children) {\n child.updateWorldMatrix(device, worldMatrix);\n }\n }\n\n traverse(fn: (n: GLTFNode, ...args) => void) {\n fn(this);\n for (const child of this.children) {\n child.traverse(fn);\n }\n }\n\n renderDrawables(\n passEncoder: GPURenderPassEncoder,\n bindGroups: GPUBindGroup[]\n ) {\n if (this.drawables !== undefined) {\n for (const drawable of this.drawables) {\n if (this.skin) {\n drawable.render(passEncoder, [\n ...bindGroups,\n this.nodeTransformBindGroup,\n this.skin.skinBindGroup,\n ]);\n } else {\n drawable.render(passEncoder, [\n ...bindGroups,\n this.nodeTransformBindGroup,\n ]);\n }\n }\n }\n // Render any of its children\n for (const child of this.children) {\n child.renderDrawables(passEncoder, bindGroups);\n }\n }\n\n private addChild(child: GLTFNode) {\n this.children.push(child);\n }\n\n private removeChild(child: GLTFNode) {\n const ndx = this.children.indexOf(child);\n this.children.splice(ndx, 1);\n }\n}\n\nexport class GLTFScene {\n nodes?: number[];\n root: GLTFNode;\n name?: string;\n\n constructor(\n device: GPUDevice,\n nodeTransformBGL: GPUBindGroupLayout,\n baseScene: Scene\n ) {\n this.nodes = baseScene.nodes;\n this.name = baseScene.name;\n this.root = new GLTFNode(\n device,\n nodeTransformBGL,\n new BaseTransformation(),\n baseScene.name\n );\n }\n}\n\nexport class GLTFSkin {\n // Nodes of the skin's joints\n // [5, 2, 3] means our joint info is at nodes 5, 2, and 3\n joints: number[];\n // Bind Group for this skin's uniform buffer\n skinBindGroup: GPUBindGroup;\n // Static bindGroupLayout shared across all skins\n // In a larger shader with more properties, certain bind groups\n // would likely have to be combined due to device limitations in the number of bind groups\n // allowed within a shader\n // Inverse bind matrices parsed from the accessor\n private inverseBindMatrices: Float32Array;\n private jointMatricesUniformBuffer: GPUBuffer;\n private inverseBindMatricesUniformBuffer: GPUBuffer;\n static skinBindGroupLayout: GPUBindGroupLayout;\n\n static createSharedBindGroupLayout(device: GPUDevice) {\n this.skinBindGroupLayout = device.createBindGroupLayout({\n label: 'StaticGLTFSkin.bindGroupLayout',\n entries: [\n // Holds the initial joint matrices buffer\n {\n binding: 0,\n buffer: {\n type: 'read-only-storage',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n // Holds the inverse bind matrices buffer\n {\n binding: 1,\n buffer: {\n type: 'read-only-storage',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n ],\n });\n }\n\n // For the sake of simplicity and easier debugging, we're going to convert our skin gpu accessor to a\n // float32array, which should be performant enough for this example since there is only one skin (again, this)\n // is not a comprehensive gltf parser\n constructor(\n device: GPUDevice,\n inverseBindMatricesAccessor: GLTFAccessor,\n joints: number[]\n ) {\n if (\n inverseBindMatricesAccessor.componentType !==\n GLTFDataComponentType.FLOAT ||\n inverseBindMatricesAccessor.byteStride !== 64\n ) {\n throw Error(\n `This skin's provided accessor does not access a mat4x4 matrix, or does not access the provided mat4x4 data correctly`\n );\n }\n // NOTE: Come back to this uint8array to float32array conversion in case it is incorrect\n this.inverseBindMatrices = new Float32Array(\n inverseBindMatricesAccessor.view.view.buffer,\n inverseBindMatricesAccessor.view.view.byteOffset,\n inverseBindMatricesAccessor.view.view.byteLength / 4\n );\n this.joints = joints;\n const skinGPUBufferUsage: GPUBufferDescriptor = {\n size: Float32Array.BYTES_PER_ELEMENT * 16 * joints.length,\n usage: GPUBufferUsage.STORAGE | GPUBufferUsage.COPY_DST,\n };\n this.jointMatricesUniformBuffer = device.createBuffer(skinGPUBufferUsage);\n this.inverseBindMatricesUniformBuffer =\n device.createBuffer(skinGPUBufferUsage);\n device.queue.writeBuffer(\n this.inverseBindMatricesUniformBuffer,\n 0,\n this.inverseBindMatrices\n );\n this.skinBindGroup = device.createBindGroup({\n layout: GLTFSkin.skinBindGroupLayout,\n label: 'StaticGLTFSkin.bindGroup',\n entries: [\n {\n binding: 0,\n resource: {\n buffer: this.jointMatricesUniformBuffer,\n },\n },\n {\n binding: 1,\n resource: {\n buffer: this.inverseBindMatricesUniformBuffer,\n },\n },\n ],\n });\n }\n\n update(device: GPUDevice, currentNodeIndex: number, nodes: GLTFNode[]) {\n const globalWorldInverse = mat4.inverse(\n nodes[currentNodeIndex].worldMatrix\n );\n for (let j = 0; j < this.joints.length; j++) {\n const joint = this.joints[j];\n const dstMatrix: Mat4 = mat4.identity();\n mat4.multiply(globalWorldInverse, nodes[joint].worldMatrix, dstMatrix);\n const toWrite = dstMatrix as Float32Array;\n device.queue.writeBuffer(\n this.jointMatricesUniformBuffer,\n j * 64,\n toWrite.buffer,\n toWrite.byteOffset,\n toWrite.byteLength\n );\n }\n }\n}\n\n// Upload a GLB model, parse its JSON and Binary components, and create the requisite GPU resources\n// to render them. NOTE: Not extensible to all GLTF contexts at this point in time\nexport const convertGLBToJSONAndBinary = async (\n buffer: ArrayBuffer,\n device: GPUDevice\n): Promise => {\n // Binary GLTF layout: https://cdn.willusher.io/webgpu-0-to-gltf/glb-layout.svg\n const jsonHeader = new DataView(buffer, 0, 20);\n validateGLBHeader(jsonHeader);\n\n // Length of the jsonChunk found at jsonHeader[12 - 15]\n const jsonChunkLength = jsonHeader.getUint32(12, true);\n\n // Parse the JSON chunk of the glB file to a JSON object\n const jsonChunk: GlTf = JSON.parse(\n new TextDecoder('utf-8').decode(new Uint8Array(buffer, 20, jsonChunkLength))\n );\n\n console.log(jsonChunk);\n // Binary data located after jsonChunk\n const binaryHeader = new Uint32Array(buffer, 20 + jsonChunkLength, 2);\n validateBinaryHeader(binaryHeader);\n\n const binaryChunk = new GLTFBuffer(\n buffer,\n 28 + jsonChunkLength,\n binaryHeader[0]\n );\n\n //Const populate missing properties of jsonChunk\n for (const accessor of jsonChunk.accessors) {\n accessor.byteOffset = accessor.byteOffset ?? 0;\n accessor.normalized = accessor.normalized ?? false;\n }\n\n for (const bufferView of jsonChunk.bufferViews) {\n bufferView.byteOffset = bufferView.byteOffset ?? 0;\n }\n\n if (jsonChunk.samplers) {\n for (const sampler of jsonChunk.samplers) {\n sampler.wrapS = sampler.wrapS ?? 10497; //GL.REPEAT\n sampler.wrapT = sampler.wrapT ?? 10947; //GL.REPEAT\n }\n }\n\n //Mark each accessor with its intended usage within the vertexShader.\n //Often necessary due to infrequencey with which the BufferView target field is populated.\n for (const mesh of jsonChunk.meshes) {\n for (const primitive of mesh.primitives) {\n if ('indices' in primitive) {\n const accessor = jsonChunk.accessors[primitive.indices];\n jsonChunk.accessors[primitive.indices].bufferViewUsage |=\n GPUBufferUsage.INDEX;\n jsonChunk.bufferViews[accessor.bufferView].usage |=\n GPUBufferUsage.INDEX;\n }\n for (const attribute of Object.values(primitive.attributes)) {\n const accessor = jsonChunk.accessors[attribute];\n jsonChunk.accessors[attribute].bufferViewUsage |= GPUBufferUsage.VERTEX;\n jsonChunk.bufferViews[accessor.bufferView].usage |=\n GPUBufferUsage.VERTEX;\n }\n }\n }\n\n // Create GLTFBufferView objects for all the buffer views in the glTF file\n const bufferViews: GLTFBufferView[] = [];\n for (let i = 0; i < jsonChunk.bufferViews.length; ++i) {\n bufferViews.push(new GLTFBufferView(binaryChunk, jsonChunk.bufferViews[i]));\n }\n\n const accessors: GLTFAccessor[] = [];\n for (let i = 0; i < jsonChunk.accessors.length; ++i) {\n const accessorInfo = jsonChunk.accessors[i];\n const viewID = accessorInfo['bufferView'];\n accessors.push(new GLTFAccessor(bufferViews[viewID], accessorInfo));\n }\n // Load the first mesh\n const meshes: GLTFMesh[] = [];\n for (let i = 0; i < jsonChunk.meshes.length; i++) {\n const mesh = jsonChunk.meshes[i];\n const meshPrimitives: GLTFPrimitive[] = [];\n for (let j = 0; j < mesh.primitives.length; ++j) {\n const prim = mesh.primitives[j];\n let topology = prim['mode'];\n // Default is triangles if mode specified\n if (topology === undefined) {\n topology = GLTFRenderMode.TRIANGLES;\n }\n if (\n topology != GLTFRenderMode.TRIANGLES &&\n topology != GLTFRenderMode.TRIANGLE_STRIP\n ) {\n throw Error(`Unsupported primitive mode ${prim['mode']}`);\n }\n\n const primitiveAttributeMap = {};\n const attributes = [];\n if (jsonChunk['accessors'][prim['indices']] !== undefined) {\n const indices = accessors[prim['indices']];\n primitiveAttributeMap['INDICES'] = indices;\n }\n\n // Loop through all the attributes and store within our attributeMap\n for (const attr in prim['attributes']) {\n const accessor = accessors[prim['attributes'][attr]];\n primitiveAttributeMap[attr] = accessor;\n if (accessor.structureType > 3) {\n throw Error(\n 'Vertex attribute accessor accessed an unsupported data type for vertex attribute'\n );\n }\n attributes.push(attr);\n }\n meshPrimitives.push(\n new GLTFPrimitive(topology, primitiveAttributeMap, attributes)\n );\n }\n meshes.push(new GLTFMesh(mesh.name, meshPrimitives));\n }\n\n const skins: GLTFSkin[] = [];\n for (const skin of jsonChunk.skins) {\n const inverseBindMatrixAccessor = accessors[skin.inverseBindMatrices];\n inverseBindMatrixAccessor.view.addUsage(\n GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST\n );\n inverseBindMatrixAccessor.view.needsUpload = true;\n }\n\n // Upload the buffer views used by mesh\n for (let i = 0; i < bufferViews.length; ++i) {\n if (bufferViews[i].needsUpload) {\n bufferViews[i].upload(device);\n }\n }\n\n GLTFSkin.createSharedBindGroupLayout(device);\n for (const skin of jsonChunk.skins) {\n const inverseBindMatrixAccessor = accessors[skin.inverseBindMatrices];\n const joints = skin.joints;\n skins.push(new GLTFSkin(device, inverseBindMatrixAccessor, joints));\n }\n\n const nodes: GLTFNode[] = [];\n\n // Access each node. If node references a mesh, add mesh to that node\n const nodeUniformsBindGroupLayout = device.createBindGroupLayout({\n label: 'NodeUniforms.bindGroupLayout',\n entries: [\n {\n binding: 0,\n buffer: {\n type: 'uniform',\n },\n visibility: GPUShaderStage.VERTEX,\n },\n ],\n });\n for (const currNode of jsonChunk.nodes) {\n const baseTransformation = new BaseTransformation(\n currNode.translation,\n currNode.rotation,\n currNode.scale\n );\n const nodeToCreate = new GLTFNode(\n device,\n nodeUniformsBindGroupLayout,\n baseTransformation,\n currNode.name,\n skins[currNode.skin]\n );\n const meshToAdd = meshes[currNode.mesh];\n if (meshToAdd) {\n nodeToCreate.drawables.push(meshToAdd);\n }\n nodes.push(nodeToCreate);\n }\n\n // Assign each node its children\n nodes.forEach((node, idx) => {\n const children = jsonChunk.nodes[idx].children;\n if (children) {\n children.forEach((childIdx) => {\n const child = nodes[childIdx];\n child.setParent(node);\n });\n }\n });\n\n const scenes: GLTFScene[] = [];\n\n for (const jsonScene of jsonChunk.scenes) {\n const scene = new GLTFScene(device, nodeUniformsBindGroupLayout, jsonScene);\n const sceneChildren = scene.nodes;\n sceneChildren.forEach((childIdx) => {\n const child = nodes[childIdx];\n child.setParent(scene.root);\n });\n scenes.push(scene);\n }\n return {\n meshes,\n nodes,\n scenes,\n skins,\n };\n};\n"},6370:function(e,n){"use strict";n.Z="import { Mat4 } from 'wgpu-matrix';\nimport { GLTFNode } from './glbUtils';\n\n/* Sourced from https://github.com/bwasty/gltf-loader-ts/blob/master/source/gltf.ts */\n/* License for use can be found here: https://github.com/bwasty/gltf-loader-ts/blob/master/LICENSE */\n/* Comments and types have been excluded from original source for sake of cleanliness and brevity */\nexport type GlTfId = number;\n\nexport interface AccessorSparseIndices {\n bufferView: GlTfId;\n byteOffset?: number;\n componentType: 5121 | 5123 | 5125 | number;\n}\n\nexport interface AccessorSparseValues {\n bufferView: GlTfId;\n byteOffset?: number;\n}\n\nexport interface AccessorSparse {\n count: number;\n indices: AccessorSparseIndices;\n values: AccessorSparseValues;\n}\n\nexport interface Accessor {\n bufferView?: GlTfId;\n bufferViewUsage?: 34962 | 34963 | number;\n byteOffset?: number;\n componentType: 5120 | 5121 | 5122 | 5123 | 5125 | 5126 | number;\n normalized?: boolean;\n count: number;\n type: 'SCALAR' | 'VEC2' | 'VEC3' | 'VEC4' | 'MAT2' | 'MAT3' | 'MAT4' | string;\n max?: number[];\n min?: number[];\n sparse?: AccessorSparse;\n name?: string;\n}\n\nexport interface AnimationChannelTarget {\n node?: GlTfId;\n path: 'translation' | 'rotation' | 'scale' | 'weights' | string;\n}\n\nexport interface AnimationChannel {\n sampler: GlTfId;\n target: AnimationChannelTarget;\n}\n\nexport interface AnimationSampler {\n input: GlTfId;\n interpolation?: 'LINEAR' | 'STEP' | 'CUBICSPLINE' | string;\n output: GlTfId;\n}\n\nexport interface Animation {\n channels: AnimationChannel[];\n samplers: AnimationSampler[];\n name?: string;\n}\n\nexport interface Asset {\n copyright?: string;\n generator?: string;\n version: string;\n minVersion?: string;\n}\n\nexport interface Buffer {\n uri?: string;\n byteLength: number;\n name?: string;\n}\n\nexport interface BufferView {\n buffer: GlTfId;\n byteOffset?: number;\n byteLength: number;\n byteStride?: number;\n target?: 34962 | 34963 | number;\n name?: string;\n usage?: number;\n}\n\nexport interface CameraOrthographic {\n xmag: number;\n ymag: number;\n zfar: number;\n znear: number;\n}\n\nexport interface CameraPerspective {\n aspectRatio?: number;\n yfov: number;\n zfar?: number;\n znear: number;\n}\n\nexport interface Camera {\n orthographic?: CameraOrthographic;\n perspective?: CameraPerspective;\n type: 'perspective' | 'orthographic' | string;\n name?: string;\n}\n\nexport interface Image {\n uri?: string;\n mimeType?: 'image/jpeg' | 'image/png' | string;\n bufferView?: GlTfId;\n name?: string;\n}\n\nexport interface TextureInfo {\n index: GlTfId;\n texCoord?: number;\n}\n\nexport interface MaterialPbrMetallicRoughness {\n baseColorFactor?: number[];\n baseColorTexture?: TextureInfo;\n metallicFactor?: number;\n roughnessFactor?: number;\n metallicRoughnessTexture?: TextureInfo;\n}\nexport interface MaterialNormalTextureInfo {\n index?: number;\n texCoord?: number;\n scale?: number;\n}\nexport interface MaterialOcclusionTextureInfo {\n index?: number;\n texCoord?: number;\n strength?: number;\n}\n\nexport interface Material {\n name?: string;\n pbrMetallicRoughness?: MaterialPbrMetallicRoughness;\n normalTexture?: MaterialNormalTextureInfo;\n occlusionTexture?: MaterialOcclusionTextureInfo;\n emissiveTexture?: TextureInfo;\n emissiveFactor?: number[];\n alphaMode?: 'OPAQUE' | 'MASK' | 'BLEND' | string;\n alphaCutoff?: number;\n doubleSided?: boolean;\n}\n\nexport interface MeshPrimitive {\n attributes: {\n [k: string]: GlTfId;\n };\n indices?: GlTfId;\n material?: GlTfId;\n mode?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | number;\n targets?: {\n [k: string]: GlTfId;\n }[];\n}\n\nexport interface Mesh {\n primitives: MeshPrimitive[];\n weights?: number[];\n name?: string;\n}\n\nexport interface Node {\n camera?: GlTfId;\n children?: GlTfId[];\n skin?: GlTfId;\n matrix?: number[];\n worldTransformationMatrix?: Mat4;\n mesh?: GlTfId;\n rotation?: number[];\n scale?: number[];\n translation?: number[];\n weights?: number[];\n name?: string;\n}\n\nexport interface Sampler {\n magFilter?: 9728 | 9729 | number;\n minFilter?: 9728 | 9729 | 9984 | 9985 | 9986 | 9987 | number;\n wrapS?: 33071 | 33648 | 10497 | number;\n wrapT?: 33071 | 33648 | 10497 | number;\n name?: string;\n}\n\nexport interface Scene {\n nodes?: GlTfId[];\n name?: string;\n root?: GLTFNode;\n}\nexport interface Skin {\n inverseBindMatrices?: GlTfId;\n skeleton?: GlTfId;\n joints: GlTfId[];\n name?: string;\n}\n\nexport interface Texture {\n sampler?: GlTfId;\n source?: GlTfId;\n name?: string;\n}\n\nexport interface GlTf {\n extensionsUsed?: string[];\n extensionsRequired?: string[];\n accessors?: Accessor[];\n animations?: Animation[];\n asset: Asset;\n buffers?: Buffer[];\n bufferViews?: BufferView[];\n cameras?: Camera[];\n images?: Image[];\n materials?: Material[];\n meshes?: Mesh[];\n nodes?: Node[];\n samplers?: Sampler[];\n scene?: GlTfId;\n scenes?: Scene[];\n skins?: Skin[];\n textures?: Texture[];\n}\n"},2624:function(e,n){"use strict";n.Z="struct VertexInput {\n @location(0) vert_pos: vec2,\n @location(1) joints: vec4,\n @location(2) weights: vec4\n}\n\nstruct VertexOutput {\n @builtin(position) Position: vec4,\n @location(0) world_pos: vec3,\n @location(1) joints: vec4,\n @location(2) weights: vec4,\n}\n\nstruct CameraUniforms {\n projMatrix: mat4x4f,\n viewMatrix: mat4x4f,\n modelMatrix: mat4x4f,\n}\n\nstruct GeneralUniforms {\n render_mode: u32,\n skin_mode: u32,\n}\n\n@group(0) @binding(0) var camera_uniforms: CameraUniforms;\n@group(1) @binding(0) var general_uniforms: GeneralUniforms;\n@group(2) @binding(0) var joint_matrices: array>;\n@group(2) @binding(1) var inverse_bind_matrices: array>;\n\n@vertex\nfn vertexMain(input: VertexInput) -> VertexOutput {\n var output: VertexOutput;\n var bones = vec4(0.0, 0.0, 0.0, 0.0);\n let position = vec4(input.vert_pos.x, input.vert_pos.y, 0.0, 1.0);\n // Get relevant 4 bone matrices\n let joint0 = joint_matrices[input.joints[0]] * inverse_bind_matrices[input.joints[0]];\n let joint1 = joint_matrices[input.joints[1]] * inverse_bind_matrices[input.joints[1]];\n let joint2 = joint_matrices[input.joints[2]] * inverse_bind_matrices[input.joints[2]];\n let joint3 = joint_matrices[input.joints[3]] * inverse_bind_matrices[input.joints[3]];\n // Compute influence of joint based on weight\n let skin_matrix = \n joint0 * input.weights[0] +\n joint1 * input.weights[1] +\n joint2 * input.weights[2] +\n joint3 * input.weights[3];\n // Bone transformed mesh\n output.Position = select(\n camera_uniforms.projMatrix * camera_uniforms.viewMatrix * camera_uniforms.modelMatrix * position,\n camera_uniforms.projMatrix * camera_uniforms.viewMatrix * camera_uniforms.modelMatrix * skin_matrix * position,\n general_uniforms.skin_mode == 0\n );\n\n //Get unadjusted world coordinates\n output.world_pos = position.xyz;\n output.joints = vec4(f32(input.joints.x), f32(input.joints.y), f32(input.joints.z), f32(input.joints.w));\n output.weights = input.weights;\n return output;\n}\n\n\n@fragment\nfn fragmentMain(input: VertexOutput) -> @location(0) vec4 {\n switch general_uniforms.render_mode {\n case 1: {\n return input.joints;\n }\n case 2: {\n return input.weights;\n }\n default: {\n return vec4(255.0, 0.0, 1.0, 1.0); \n }\n }\n}"},6270:function(e,n){"use strict";n.Z="/* eslint-disable prettier/prettier */\nexport const gridVertices = new Float32Array([\n // B0\n 0, 1, // 0 \n 0, -1, // 1\n // CONNECTOR\n 2, 1, // 2\n 2, -1, // 3\n // B1\n 4, 1, // 4\n 4, -1, // 5\n // CONNECTOR\n 6, 1, // 6\n 6, -1, // 7\n // B2\n 8, 1, // 8\n 8, -1, // 9,\n // CONNECTOR\n 10, 1, //10\n 10, -1, //11\n // B3\n 12, 1, //12\n 12, -1, //13\n]);\n\n// Representing the indice of four bones that can influence each vertex\nexport const gridJoints = new Uint32Array([\n 0, 0, 0, 0, // Vertex 0 is influenced by bone 0\n 0, 0, 0, 0, // 1\n 0, 1, 0, 0, // 2\n 0, 1, 0, 0, // 3\n 1, 0, 0, 0, // 4\n 1, 0, 0, 0, // 5\n 1, 2, 0, 0, // Vertex 6 is influenced by bone 1 and bone 2\n 1, 2, 0, 0, // 7\n 2, 0, 0, 0, // 8\n 2, 0, 0, 0, // 9\n 1, 2, 3, 0, //10\n 1, 2, 3, 0, //11\n 2, 3, 0, 0, //12\n 2, 3, 0, 0, //13\n])\n\n// The weights applied when ve\nexport const gridWeights = new Float32Array([\n // B0\n 1, 0, 0, 0, // 0\n 1, 0, 0, 0, // 1\n // CONNECTOR\n .5,.5, 0, 0, // 2\n .5,.5, 0, 0, // 3\n // B1\n 1, 0, 0, 0, // 4\n 1, 0, 0, 0, // 5\n // CONNECTOR\n .5,.5, 0, 0, // 6\n .5,.5, 0, 0, // 7\n // B2\n 1, 0, 0, 0, // 8\n 1, 0, 0, 0, // 9\n // CONNECTOR\n .5,.5, 0, 0, // 10\n .5,.5, 0, 0, // 11\n // B3\n 1, 0, 0, 0, // 12\n 1, 0, 0, 0, // 13\n]);\n\n// Using data above...\n// Vertex 0 is influenced by bone 0 with a weight of 1 \n// Vertex 1 is influenced by bone 1 with a weight of 1\n// Vertex 2 is influenced by bone 0 and 1 with a weight of 0.5 each\n// and so on..\n// Although a vertex can hypothetically be influenced by 4 bones,\n// in this example, we stick to each vertex being infleunced by only two\n// although there can be downstream effects of parent bones influencing child bones\n// that influence their own children\n\nexport const gridIndices = new Uint16Array([\n // B0\n 0, 1,\n 0, 2,\n 1, 3,\n // CONNECTOR\n 2, 3, //\n 2, 4,\n 3, 5,\n // B1\n 4, 5,\n 4, 6,\n 5, 7, \n // CONNECTOR\n 6, 7,\n 6, 8,\n 7, 9,\n // B2\n 8, 9,\n 8, 10,\n 9, 11,\n // CONNECTOR\n 10, 11,\n 10, 12,\n 11, 13,\n // B3\n 12, 13,\n]);"},9483:function(e,n){"use strict";n.Z="import { gridVertices, gridIndices, gridJoints, gridWeights } from './gridData';\n\n// Uses constant grid data to create appropriately sized GPU Buffers for our skinned grid\nexport const createSkinnedGridBuffers = (device: GPUDevice) => {\n // Utility function that creates GPUBuffers from data\n const createBuffer = (\n data: Float32Array | Uint32Array,\n type: 'f32' | 'u32'\n ) => {\n const buffer = device.createBuffer({\n size: data.byteLength,\n usage: GPUBufferUsage.VERTEX,\n mappedAtCreation: true,\n });\n if (type === 'f32') {\n new Float32Array(buffer.getMappedRange()).set(data);\n } else {\n new Uint32Array(buffer.getMappedRange()).set(data);\n }\n buffer.unmap();\n return buffer;\n };\n const positionsBuffer = createBuffer(gridVertices, 'f32');\n const jointsBuffer = createBuffer(gridJoints, 'u32');\n const weightsBuffer = createBuffer(gridWeights, 'f32');\n const indicesBuffer = device.createBuffer({\n size: Uint16Array.BYTES_PER_ELEMENT * gridIndices.length,\n usage: GPUBufferUsage.INDEX,\n mappedAtCreation: true,\n });\n new Uint16Array(indicesBuffer.getMappedRange()).set(gridIndices);\n indicesBuffer.unmap();\n\n return {\n positions: positionsBuffer,\n joints: jointsBuffer,\n weights: weightsBuffer,\n indices: indicesBuffer,\n };\n};\n\nexport const createSkinnedGridRenderPipeline = (\n device: GPUDevice,\n presentationFormat: GPUTextureFormat,\n vertexShader: string,\n fragmentShader: string,\n bgLayouts: GPUBindGroupLayout[]\n) => {\n const pipeline = device.createRenderPipeline({\n label: 'SkinnedGridRenderer',\n layout: device.createPipelineLayout({\n label: `SkinnedGridRenderer.pipelineLayout`,\n bindGroupLayouts: bgLayouts,\n }),\n vertex: {\n module: device.createShaderModule({\n label: `SkinnedGridRenderer.vertexShader`,\n code: vertexShader,\n }),\n entryPoint: 'vertexMain',\n buffers: [\n // Vertex Positions (positions)\n {\n arrayStride: Float32Array.BYTES_PER_ELEMENT * 2,\n attributes: [\n {\n format: 'float32x2',\n offset: 0,\n shaderLocation: 0,\n },\n ],\n },\n // Bone Indices (joints)\n {\n arrayStride: Uint32Array.BYTES_PER_ELEMENT * 4,\n attributes: [\n {\n format: 'uint32x4',\n offset: 0,\n shaderLocation: 1,\n },\n ],\n },\n // Bone Weights (weights)\n {\n arrayStride: Float32Array.BYTES_PER_ELEMENT * 4,\n attributes: [\n {\n format: 'float32x4',\n offset: 0,\n shaderLocation: 2,\n },\n ],\n },\n ],\n },\n fragment: {\n module: device.createShaderModule({\n label: `SkinnedGridRenderer.fragmentShader`,\n code: fragmentShader,\n }),\n entryPoint: 'fragmentMain',\n targets: [\n {\n format: presentationFormat,\n },\n ],\n },\n primitive: {\n topology: 'line-list',\n },\n });\n return pipeline;\n};\n"},134:function(e,n){"use strict";n.Z="@group(0) @binding(0) var mySampler : sampler;\n@group(0) @binding(1) var myTexture : texture_2d;\n\nstruct VertexOutput {\n @builtin(position) Position : vec4,\n @location(0) fragUV : vec2,\n}\n\n@vertex\nfn vert_main(@builtin(vertex_index) VertexIndex : u32) -> VertexOutput {\n const pos = array(\n vec2( 1.0, 1.0),\n vec2( 1.0, -1.0),\n vec2(-1.0, -1.0),\n vec2( 1.0, 1.0),\n vec2(-1.0, -1.0),\n vec2(-1.0, 1.0),\n );\n\n const uv = 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The WebGPU Samples are a set of samples and demos demonstrating the use of the WebGPU API. Please see the current implementation status and how to run WebGPU in your browser at webgpu.io.

\ No newline at end of file +WebGPU Samples

The WebGPU Samples are a set of samples and demos demonstrating the use of the WebGPU API. Please see the current implementation status and how to run WebGPU in your browser at webgpu.io.

\ No newline at end of file diff --git a/samples/A-buffer.html b/samples/A-buffer.html index 0a5f9301..59912221 100644 --- a/samples/A-buffer.html +++ b/samples/A-buffer.html @@ -10,6 +10,6 @@ } A-Buffer - WebGPU Samples

A-Buffer

See it on Github!

Demonstrates order independent transparency using a per-pixel + limiting memory usage (when required)."/>

A-Buffer

See it on Github!

Demonstrates order independent transparency using a per-pixel linked-list of translucent fragments. Provides a choice for - limiting memory usage (when required).

\ No newline at end of file + limiting memory usage (when required).

\ No newline at end of file diff --git a/samples/animometer.html b/samples/animometer.html index fde34533..251daede 100644 --- a/samples/animometer.html +++ b/samples/animometer.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Animometer - WebGPU Samples

Animometer

See it on Github!

A WebGPU port of the Animometer MotionMark benchmark.

\ No newline at end of file + Animometer - WebGPU Samples

Animometer

See it on Github!

A WebGPU port of the Animometer MotionMark benchmark.

\ No newline at end of file diff --git a/samples/bitonicSort.html b/samples/bitonicSort.html index da703f7e..424e8260 100644 --- a/samples/bitonicSort.html +++ b/samples/bitonicSort.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Bitonic Sort - WebGPU Samples

Bitonic Sort

See it on Github!

A naive bitonic sort algorithm executed on the GPU, based on tgfrerer's implementation at poniesandlight.co.uk/reflect/bitonic_merge_sort/. Each dispatch of the bitonic sort shader dispatches a workgroup containing elements/2 invocations. The GUI's Execution Information folder contains information about the sort's current state. The visualizer displays the sort's results as colored cells sorted from brightest to darkest.

\ No newline at end of file + Bitonic Sort - WebGPU Samples

Bitonic Sort

See it on Github!

A naive bitonic sort algorithm executed on the GPU, based on tgfrerer's implementation at poniesandlight.co.uk/reflect/bitonic_merge_sort/. Each dispatch of the bitonic sort shader dispatches a workgroup containing elements/2 invocations. The GUI's Execution Information folder contains information about the sort's current state. The visualizer displays the sort's results as colored cells sorted from brightest to darkest.

\ No newline at end of file diff --git a/samples/cameras.html b/samples/cameras.html index 59a30333..47dc539b 100644 --- a/samples/cameras.html +++ b/samples/cameras.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Cameras - WebGPU Samples

Cameras

See it on Github!

This example provides example camera implementations

\ No newline at end of file + Cameras - WebGPU Samples

Cameras

See it on Github!

This example provides example camera implementations

\ No newline at end of file diff --git a/samples/computeBoids.html b/samples/computeBoids.html index 1751c07e..a6d8f9e4 100644 --- a/samples/computeBoids.html +++ b/samples/computeBoids.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Compute Boids - WebGPU Samples

Compute Boids

See it on Github!

A GPU compute particle simulation that mimics the flocking behavior of birds. A compute shader updates two ping-pong buffers which store particle data. The data is used to draw instanced particles.

\ No newline at end of file + Compute Boids - WebGPU Samples

Compute Boids

See it on Github!

A GPU compute particle simulation that mimics the flocking behavior of birds. A compute shader updates two ping-pong buffers which store particle data. The data is used to draw instanced particles.

\ No newline at end of file diff --git a/samples/cornell.html b/samples/cornell.html index 73920336..29738e85 100644 --- a/samples/cornell.html +++ b/samples/cornell.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Cornell box - WebGPU Samples

Cornell box

See it on Github!

A classic Cornell box, using a lightmap generated using software ray-tracing.

\ No newline at end of file + Cornell box - WebGPU Samples

Cornell box

See it on Github!

A classic Cornell box, using a lightmap generated using software ray-tracing.

\ No newline at end of file diff --git a/samples/cubemap.html b/samples/cubemap.html index 4ed20b1d..c74d3f44 100644 --- a/samples/cubemap.html +++ b/samples/cubemap.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Cubemap - WebGPU Samples

Cubemap

See it on Github!

This example shows how to render and sample from a cubemap texture.

\ No newline at end of file + Cubemap - WebGPU Samples

Cubemap

See it on Github!

This example shows how to render and sample from a cubemap texture.

\ No newline at end of file diff --git a/samples/deferredRendering.html b/samples/deferredRendering.html index 4ca1cfe0..72be27d2 100644 --- a/samples/deferredRendering.html +++ b/samples/deferredRendering.html @@ -16,7 +16,7 @@ We also update light position in a compute shader, where further operations like tile/cluster culling could happen. The debug view shows the depth buffer on the left (flipped and scaled a bit to make it more visible), the normal G buffer in the middle, and the albedo G-buffer on the right side of the screen. - "/>

Deferred Rendering

See it on Github!

This example shows how to do deferred rendering with webgpu. + "/>

Deferred Rendering

See it on Github!

This example shows how to do deferred rendering with webgpu. Render geometry info to multiple targets in the gBuffers in the first pass. In this sample we have 2 gBuffers for normals and albedo, along with a depth texture. And then do the lighting in a second pass with per fragment data read from gBuffers so it's independent of scene complexity. @@ -24,4 +24,4 @@ We also update light position in a compute shader, where further operations like tile/cluster culling could happen. The debug view shows the depth buffer on the left (flipped and scaled a bit to make it more visible), the normal G buffer in the middle, and the albedo G-buffer on the right side of the screen. -

\ No newline at end of file +

\ No newline at end of file diff --git a/samples/fractalCube.html b/samples/fractalCube.html index aa6b1dd7..39182e60 100644 --- a/samples/fractalCube.html +++ b/samples/fractalCube.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Fractal Cube - WebGPU Samples

Fractal Cube

See it on Github!

This example uses the previous frame's rendering result as the source texture for the next frame.

\ No newline at end of file + Fractal Cube - WebGPU Samples

Fractal Cube

See it on Github!

This example uses the previous frame's rendering result as the source texture for the next frame.

\ No newline at end of file diff --git a/samples/gameOfLife.html b/samples/gameOfLife.html index edf36781..0894a365 100644 --- a/samples/gameOfLife.html +++ b/samples/gameOfLife.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Conway's Game of Life - WebGPU Samples

Conway's Game of Life

See it on Github!

This example shows how to make Conway's game of life. First, use compute shader to calculate how cells grow or die. Then use render pipeline to draw cells by using instance mesh.

\ No newline at end of file + Conway's Game of Life - WebGPU Samples

Conway's Game of Life

See it on Github!

This example shows how to make Conway's game of life. First, use compute shader to calculate how cells grow or die. Then use render pipeline to draw cells by using instance mesh.

\ No newline at end of file diff --git a/samples/helloTriangle.html b/samples/helloTriangle.html index a24965fc..1eff7a11 100644 --- a/samples/helloTriangle.html +++ b/samples/helloTriangle.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Hello Triangle - WebGPU Samples

Hello Triangle

See it on Github!

Shows rendering a basic triangle.

\ No newline at end of file + Hello Triangle - WebGPU Samples

Hello Triangle

See it on Github!

Shows rendering a basic triangle.

\ No newline at end of file diff --git a/samples/helloTriangleMSAA.html b/samples/helloTriangleMSAA.html index 1a5b04df..2ba933bb 100644 --- a/samples/helloTriangleMSAA.html +++ b/samples/helloTriangleMSAA.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Hello Triangle MSAA - WebGPU Samples

Hello Triangle MSAA

See it on Github!

Shows multisampled rendering a basic triangle.

\ No newline at end of file + Hello Triangle MSAA - WebGPU Samples

Hello Triangle MSAA

See it on Github!

Shows multisampled rendering a basic triangle.

\ No newline at end of file diff --git a/samples/imageBlur.html b/samples/imageBlur.html index c9e9b9e9..77ba21f8 100644 --- a/samples/imageBlur.html +++ b/samples/imageBlur.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Image Blur - WebGPU Samples

Image Blur

See it on Github!

This example shows how to blur an image using a WebGPU compute shader.

\ No newline at end of file + Image Blur - WebGPU Samples

Image Blur

See it on Github!

This example shows how to blur an image using a WebGPU compute shader.

\ No newline at end of file diff --git a/samples/instancedCube.html b/samples/instancedCube.html index 4b1e2d28..1c389355 100644 --- a/samples/instancedCube.html +++ b/samples/instancedCube.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Instanced Cube - WebGPU Samples

Instanced Cube

See it on Github!

This example shows the use of instancing.

\ No newline at end of file + Instanced Cube - WebGPU Samples

Instanced Cube

See it on Github!

This example shows the use of instancing.

\ No newline at end of file diff --git a/samples/normalMap.html b/samples/normalMap.html index 5c291fd9..1ae83d85 100644 --- a/samples/normalMap.html +++ b/samples/normalMap.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Normal Mapping - WebGPU Samples

Normal Mapping

See it on Github!

This example demonstrates multiple different methods that employ fragment shaders to achieve additional perceptual depth on the surface of a cube mesh. Demonstrated methods include normal mapping, parallax mapping, and steep parallax mapping.

\ No newline at end of file + Normal Mapping - WebGPU Samples

Normal Mapping

See it on Github!

This example demonstrates multiple different methods that employ fragment shaders to achieve additional perceptual depth on the surface of a cube mesh. Demonstrated methods include normal mapping, parallax mapping, and steep parallax mapping.

\ No newline at end of file diff --git a/samples/particles.html b/samples/particles.html index 6a7abbb9..6f46eb5a 100644 --- a/samples/particles.html +++ b/samples/particles.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Particles - WebGPU Samples

Particles

See it on Github!

This example demonstrates rendering of particles simulated with compute shaders.

\ No newline at end of file + Particles - WebGPU Samples

Particles

See it on Github!

This example demonstrates rendering of particles simulated with compute shaders.

\ No newline at end of file diff --git a/samples/renderBundles.html b/samples/renderBundles.html index c6717faa..cae31b85 100644 --- a/samples/renderBundles.html +++ b/samples/renderBundles.html @@ -11,7 +11,7 @@ Render Bundles - WebGPU Samples

Render Bundles

See it on Github!

This example shows how to use render bundles. It renders a large number of + of instancing to reduce draw overhead.)"/>

Render Bundles

See it on Github!

This example shows how to use render bundles. It renders a large number of meshes individually as a proxy for a more complex scene in order to demonstrate the reduction in JavaScript time spent to issue render commands. (Typically a scene like this would make use - of instancing to reduce draw overhead.)

\ No newline at end of file + of instancing to reduce draw overhead.)

\ No newline at end of file diff --git a/samples/resizeCanvas.html b/samples/resizeCanvas.html index 5272b913..59c4c5be 100644 --- a/samples/resizeCanvas.html +++ b/samples/resizeCanvas.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Resize Canvas - WebGPU Samples

Resize Canvas

See it on Github!

Shows multisampled rendering a basic triangle on a dynamically sized canvas.

\ No newline at end of file + Resize Canvas - WebGPU Samples

Resize Canvas

See it on Github!

Shows multisampled rendering a basic triangle on a dynamically sized canvas.

\ No newline at end of file diff --git a/samples/reversedZ.html b/samples/reversedZ.html index 0c468f85..f154a2fb 100644 --- a/samples/reversedZ.html +++ b/samples/reversedZ.html @@ -17,7 +17,7 @@ Related reading: https://developer.nvidia.com/content/depth-precision-visualized https://web.archive.org/web/20220724174000/https://thxforthefish.com/posts/reverse_z/ - "/>

Reversed Z

See it on Github!

This example shows the use of reversed z technique for better utilization of depth buffer precision. + "/>

Reversed Z

See it on Github!

This example shows the use of reversed z technique for better utilization of depth buffer precision. The left column uses regular method, while the right one uses reversed z technique. Both are using depth32float as their depth buffer format. A set of red and green planes are positioned very close to each other. Higher sets are placed further from camera (and are scaled for better visual purpose). @@ -26,4 +26,4 @@ Related reading: https://developer.nvidia.com/content/depth-precision-visualized https://web.archive.org/web/20220724174000/https://thxforthefish.com/posts/reverse_z/ -

\ No newline at end of file +

\ No newline at end of file diff --git a/samples/rotatingCube.html b/samples/rotatingCube.html index cd46d6e9..0662317e 100644 --- a/samples/rotatingCube.html +++ b/samples/rotatingCube.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Rotating Cube - WebGPU Samples

Rotating Cube

See it on Github!

This example shows how to upload uniform data every frame to render a rotating object.

\ No newline at end of file + Rotating Cube - WebGPU Samples

Rotating Cube

See it on Github!

This example shows how to upload uniform data every frame to render a rotating object.

\ No newline at end of file diff --git a/samples/samplerParameters.html b/samples/samplerParameters.html index 6d819f8d..f9dcd19b 100644 --- a/samples/samplerParameters.html +++ b/samples/samplerParameters.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Sampler Parameters - WebGPU Samples

Sampler Parameters

See it on Github!

Visualizes what all the sampler parameters do. Shows a textured plane at various scales (rotated, head-on, in perspective, and in vanishing perspective). The bottom-right view shows the raw contents of the 4 mipmap levels of the test texture (16x16, 8x8, 4x4, and 2x2).

\ No newline at end of file + Sampler Parameters - WebGPU Samples

Sampler Parameters

See it on Github!

Visualizes what all the sampler parameters do. Shows a textured plane at various scales (rotated, head-on, in perspective, and in vanishing perspective). The bottom-right view shows the raw contents of the 4 mipmap levels of the test texture (16x16, 8x8, 4x4, and 2x2).

\ No newline at end of file diff --git a/samples/shadowMapping.html b/samples/shadowMapping.html index 0805b945..aeb4e649 100644 --- a/samples/shadowMapping.html +++ b/samples/shadowMapping.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Shadow Mapping - WebGPU Samples

Shadow Mapping

See it on Github!

This example shows how to sample from a depth texture to render shadows.

\ No newline at end of file + Shadow Mapping - WebGPU Samples

Shadow Mapping

See it on Github!

This example shows how to sample from a depth texture to render shadows.

\ No newline at end of file diff --git a/samples/skinnedMesh.html b/samples/skinnedMesh.html index c08d84f1..c43587f6 100644 --- a/samples/skinnedMesh.html +++ b/samples/skinnedMesh.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Skinned Mesh - WebGPU Samples

Skinned Mesh

See it on Github!

A demonstration of basic gltf loading and mesh skinning, ported from https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html. Mesh data, per vertex attributes, and skin inverseBindMatrices are taken from the json parsed from the binary output of the .glb file. Animations are generated progrmatically, with animated joint matrices updated and passed to shaders per frame via uniform buffers.

\ No newline at end of file + Skinned Mesh - WebGPU Samples

Skinned Mesh

See it on Github!

A demonstration of basic gltf loading and mesh skinning, ported from https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html. Mesh data, per vertex attributes, and skin inverseBindMatrices are taken from the json parsed from the binary output of the .glb file. Animations are generated progrmatically, with animated joint matrices updated and passed to shaders per frame via uniform buffers.

\ No newline at end of file diff --git a/samples/texturedCube.html b/samples/texturedCube.html index 0b961df3..6ef60fdf 100644 --- a/samples/texturedCube.html +++ b/samples/texturedCube.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Textured Cube - WebGPU Samples

Textured Cube

See it on Github!

This example shows how to bind and sample textures.

\ No newline at end of file + Textured Cube - WebGPU Samples

Textured Cube

See it on Github!

This example shows how to bind and sample textures.

\ No newline at end of file diff --git a/samples/twoCubes.html b/samples/twoCubes.html index 360d4b5e..40f5644d 100644 --- a/samples/twoCubes.html +++ b/samples/twoCubes.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Two Cubes - WebGPU Samples

Two Cubes

See it on Github!

This example shows some of the alignment requirements involved when updating and binding multiple slices of a uniform buffer. It renders two rotating cubes which have transform matrices at different offsets in a uniform buffer.

\ No newline at end of file + Two Cubes - WebGPU Samples

Two Cubes

See it on Github!

This example shows some of the alignment requirements involved when updating and binding multiple slices of a uniform buffer. It renders two rotating cubes which have transform matrices at different offsets in a uniform buffer.

\ No newline at end of file diff --git a/samples/videoUploading.html b/samples/videoUploading.html index ca0a7e1b..a1a0c5bc 100644 --- a/samples/videoUploading.html +++ b/samples/videoUploading.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Video Uploading - WebGPU Samples

Video Uploading

See it on Github!

This example shows how to upload video frame to WebGPU.

\ No newline at end of file + Video Uploading - WebGPU Samples

Video Uploading

See it on Github!

This example shows how to upload video frame to WebGPU.

\ No newline at end of file diff --git a/samples/videoUploadingWebCodecs.html b/samples/videoUploadingWebCodecs.html index d85a1cb5..e465b9a3 100644 --- a/samples/videoUploadingWebCodecs.html +++ b/samples/videoUploadingWebCodecs.html @@ -8,4 +8,4 @@ height: auto !important; overflow: visible !important; } - Video Uploading with WebCodecs - WebGPU Samples

Video Uploading with WebCodecs

See it on Github!

This example shows how to upload a WebCodecs VideoFrame to WebGPU.

\ No newline at end of file + Video Uploading with WebCodecs - WebGPU Samples

Video Uploading with WebCodecs

See it on Github!

This example shows how to upload a WebCodecs VideoFrame to WebGPU.

\ No newline at end of file diff --git a/samples/worker.html b/samples/worker.html index b4b3ddc5..53a8abff 100644 --- a/samples/worker.html +++ b/samples/worker.html @@ -10,6 +10,6 @@ } WebGPU in a Worker - WebGPU Samples

WebGPU in a Worker

See it on Github!

This example shows one method of using WebGPU in a web worker and presenting to + which is then transferred to the worker where all the WebGPU calls are made."/>

WebGPU in a Worker

See it on Github!

This example shows one method of using WebGPU in a web worker and presenting to the main thread. It uses canvas.transferControlToOffscreen() to produce an offscreen canvas - which is then transferred to the worker where all the WebGPU calls are made.

\ No newline at end of file + which is then transferred to the worker where all the WebGPU calls are made.

\ No newline at end of file