\/\/...\n\nimport { setDevice, device, setCameraUniformBuffer, cameraUniformBuffer } from '.\/common';\n\n\/\/...\n\nlet _cameraUniformBuffer = device.createBuffer({\n size: this.matrixSize,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n});\n\nsetCameraUniformBuffer(_cameraUniformBuffer);\n\n\/\/...<\/code><\/pre>\n\u5728common\u4e2d\u589e\u52a0cameraUniformBuffer<\/strong>\uff1a<\/p>\n\/\/...\n\nexport var cameraUniformBuffer: GPUBuffer;\nexport function setCameraUniformBuffer(_cameraUniformBuffer: GPUBuffer) {\n cameraUniformBuffer = _cameraUniformBuffer;\n}\n\n\/\/...<\/code><\/pre>\n\u5e73\u9762<\/h2>\n
\u4fee\u6539\u4e4b\u524d\u521b\u5efa\u7269\u4f53\u7684\u7c7b\uff0c\u9996\u5148\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u7528\u6765\u751f\u6210\u5730\u5f62\u7684\u65b9\u6cd5\uff1a<\/p>\n
\n\/\/...\n\nexport function generatePlane(numSegX: number, numSegY: number, width: number, height: number): Mesh {\n const result = new Mesh();\n\n const normal = [0, 0, 1]\n\n const xstep = width \/ numSegX;\n const ystep = height \/ numSegY;\n\n const widthHalf = width \/ 2;\n const heightHalf = width \/ 2;\n\n for (let x = - widthHalf; x < widthHalf; x += xstep) {\n for (let y = - heightHalf; y < heightHalf; y += ystep) {\n\n const x0 = x;\n const y0 = y;\n const x1 = x0 + xstep;\n const y1 = y0 + ystep;\n\n result.vertices.push({\n pos: [x0, y0, 0],\n norm: normal,\n uv: [1 - (x0 + widthHalf) \/ width, (y0 + heightHalf) \/ height],\n });\n\n result.vertices.push({\n pos: [x1, y0, 0],\n norm: normal,\n uv: [1 - (x1 + widthHalf) \/ width, (y0 + heightHalf) \/ height],\n });\n\n result.vertices.push({\n pos: [x0, y1, 0],\n norm: normal,\n uv: [1 - (x0 + widthHalf) \/ width, (y1 + heightHalf) \/ height],\n });\n\n result.vertices.push({\n pos: [x0, y1, 0],\n norm: normal,\n uv: [1 - (x0 + widthHalf) \/ width, (y1 + heightHalf) \/ height],\n });\n\n result.vertices.push({\n pos: [x1, y0, 0],\n norm: normal,\n uv: [1 - (x1 + widthHalf) \/ width, (y0 + heightHalf) \/ height],\n });\n\n result.vertices.push({\n pos: [x1, y1, 0],\n norm: normal,\n uv: [1 - (x1 + widthHalf) \/ width, (y1 + heightHalf) \/ height],\n });\n }\n }\n\n return result;\n}<\/code><\/pre>\n\u5730\u5f62<\/h2>\n
\u7136\u540e\u9700\u8981\u5c06\u5730\u5f62\u653e\u5728\u5e73\u9762\u4e0a\uff0c\u4f9d\u65e7\u9700\u8981\u7ba1\u7ebf\u548c\u961f\u5217\uff1a<\/p>\n
constructor(parameter: Parameter3D, heightBitmap: ImageBitmap) {\n this.setTransformation(parameter);\n this.mesh = generatePlane(this.numSegX, this.numSegY, this.width, this.height);\n\n this.renderPipeline = device.createRenderPipeline({\n vertex: {\n module: device.createShaderModule({ code: vertexShadowCode, }),\n entryPoint: 'main',\n buffers: [\n {\n arrayStride: this.stride,\n attributes: [\n {\n shaderLocation: 0,\n offset: 0,\n format: 'float32x3',\n },\n {\n shaderLocation: 1,\n offset: 3 * 4,\n format: 'float32x3',\n },\n {\n shaderLocation: 2,\n offset: (3 + 3) * 4,\n format: 'float32x2',\n },\n ],\n } as GPUVertexBufferLayout,\n ],\n },\n fragment: {\n module: device.createShaderModule({ code: fragShaderCode, }),\n entryPoint: 'main',\n targets: [\n {\n format: 'bgra8unorm' as GPUTextureFormat,\n },\n ],\n },\n primitive: {\n topology: 'triangle-list',\n cullMode: 'back',\n },\n\n depthStencil: {\n depthWriteEnabled: true,\n depthCompare: 'less',\n format: 'depth24plus-stencil8',\n },\n });\n\n this.verticesBuffer = device.createBuffer({\n size: this.mesh.vertices.length * this.stride,\n usage: GPUBufferUsage.VERTEX,\n mappedAtCreation: true,\n });\n\n const mapping = new Float32Array(this.verticesBuffer.getMappedRange());\n for (let i = 0; i < this.mesh.vertices.length; i++) {\n \/\/ (3 * 4) + (3 * 4) + (2 * 4)\n mapping.set([(this.mesh as any).vertices[i].pos[0],\n (this.mesh as any).vertices[i].pos[1],\n (this.mesh as any).vertices[i].pos[2]], this.perVertex * i + 0);\n mapping.set((this.mesh as any).vertices[i].norm, this.perVertex * i + 3);\n mapping.set((this.mesh as any).vertices[i].uv, this.perVertex * i + 6);\n }\n this.verticesBuffer.unmap();\n\n this.transformationBuffer = device.createBuffer({\n size: this.uniformBufferSize,\n usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST,\n });\n\n const entries = [\n {\n binding: 0,\n resource: {\n buffer: this.transformationBuffer,\n offset: 0,\n size: this.matrixSize * 2,\n },\n },\n {\n binding: 1,\n resource: {\n buffer: cameraUniformBuffer,\n offset: 0,\n size: this.matrixSize,\n },\n },\n\n ];\n\n let height = device.createTexture({\n size: [heightBitmap.width, heightBitmap.height, 1],\n format: 'rgba8unorm',\n usage: GPUTextureUsage.TEXTURE_BINDING |\n GPUTextureUsage.COPY_DST |\n GPUTextureUsage.RENDER_ATTACHMENT,\n });\n device.queue.copyExternalImageToTexture(\n { source: heightBitmap },\n { texture: height },\n [heightBitmap.width, heightBitmap.height, 1]\n );\n\n entries.push({\n binding: 2,\n resource: height.createView(),\n } as any);\n\n this.transformationBindGroup = device.createBindGroup({\n layout: this.renderPipeline.getBindGroupLayout(0),\n entries: entries as Iterable<GPUBindGroupEntry>,\n });\n}<\/code><\/pre>\n\u7ed8\u5236<\/h2>\n
\u7ed8\u5236\u7684\u65f6\u5019\u4f9d\u7136\u9700\u8981\u4ececommon<\/em>\u4e2d\u83b7\u53d6device<\/em>\uff1a<\/p>\npublic draw(passEncoder: GPURenderPassEncoder, device: GPUDevice) {\n this.updateTransformationMatrix()\n\n passEncoder.setPipeline(this.renderPipeline);\n device.queue.writeBuffer(\n this.transformationBuffer,\n 0,\n this.transformMatrix.buffer,\n this.transformMatrix.byteOffset,\n this.transformMatrix.byteLength\n );\n device.queue.writeBuffer(\n this.transformationBuffer,\n 64,\n this.rotateMatrix.buffer,\n this.rotateMatrix.byteOffset,\n this.rotateMatrix.byteLength\n );\n passEncoder.setVertexBuffer(0, this.verticesBuffer);\n passEncoder.setBindGroup(0, this.transformationBindGroup);\n passEncoder.draw(this.mesh.vertices.length, 1, 0, 0);\n}<\/code><\/pre>\n\u63a5\u7740\u662f\u66f4\u65b0\u548c\u8bbe\u7f6e\u77e9\u9635\uff1a<\/p>\n
private updateTransformationMatrix() {\n const transform = mat4.create();\n const rotate = mat4.create();\n\n mat4.translate(transform, transform, vec3.fromValues(this.x, this.y, this.z))\n mat4.rotateX(transform, transform, this.rotX);\n mat4.rotateY(transform, transform, this.rotY);\n mat4.rotateZ(transform, transform, this.rotZ);\n\n mat4.rotateX(rotate, rotate, this.rotX);\n mat4.rotateY(rotate, rotate, this.rotY);\n mat4.rotateZ(rotate, rotate, this.rotZ);\n\n mat4.copy(this.transformMatrix, transform)\n mat4.copy(this.rotateMatrix, rotate)\n}\n\nprivate setTransformation(parameter?: Parameter3D) {\n if (parameter == null) {\n return;\n }\n\n this.x = parameter.x ? parameter.x : 0;\n this.y = parameter.y ? parameter.y : 0;\n this.z = parameter.z ? parameter.z : 0;\n\n this.rotX = parameter.rotX ? parameter.rotX : 0;\n this.rotY = parameter.rotY ? parameter.rotY : 0;\n this.rotZ = parameter.rotZ ? parameter.rotZ : 0;\n\n this.width = parameter.width ? parameter.width : 1;\n this.height = parameter.height ? parameter.height : 1;\n\n this.numSegX = parameter.numSegX ? parameter.numSegX : 1;\n this.numSegY = parameter.numSegY ? parameter.numSegY : 1;\n}<\/code><\/pre>\n\u573a\u666f<\/h2>\n\u76f8\u673a<\/h2>\n
\u573a\u666f\u548c\u76f8\u673a\u90fd\u4e0d\u9700\u8981\u4fee\u6539\u3002<\/p>\n
\u5b9e\u4f8b\u5316<\/h2>\n
\u5b9e\u4f8b\u5316\u4e4b\u540e\uff0c\u5148\u521b\u5efabitmap<\/em>\uff1a<\/p>\n\/\/...\n\nconst heigtmap = document.createElement('img');\nheigtmap.src = hmpng3;\nawait heigtmap.decode();\nconst heightBitmap = await createImageBitmap(heigtmap);\n\n\/\/...<\/code><\/pre>\n\u5c06bitmap<\/em>\u653e\u5230\u5e73\u9762\u4e0a\uff0c\u5e76\u6dfb\u52a0\u5230\u573a\u666f\u4e2d\uff1a<\/p>\nconst plane1 = new Plane({\n y: -posy, width: width, height: height, rotX: -Math.PI \/ 2,\n numSegX: 512, numSegY: 512\n}, heightBitmap);\nscene.add(plane1);<\/code><\/pre>\n\u4ea4\u4e92<\/h2>\n
\u4fee\u6539\u9f20\u6807\u4e2d\u952e\u4ea4\u4e92\uff1a<\/p>\n
canvas.onwheel = (e: WheelEvent) => {\n const delta = e.deltaY \/ 100;\n if (camera.z > -delta) {\n camera.z += e.deltaY \/ 100\n }\n}<\/code><\/pre>\n\u5176\u4ed6\u7684\u9f20\u6807\u3001\u624b\u52bf\u3001\u952e\u76d8\u7b49\u4ea4\u4e92\u64cd\u4f5c\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n
\u6ce8\u610f\uff1a\u4f8b\u5b50\u4e2d\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u53ef\u80fd\u968f\u65f6\u8c03\u6574\uff0c\u5177\u4f53\u4f7f\u7528\u8bf7\u53c2\u8003W3C\u7684\u5b98\u65b9\u6587\u6863<\/a><\/em><\/p>\n\u6548\u679c\u9884\u89c8\u5730\u5740\uff1a<\/p>\n
\u5730\u5f62<\/a><\/p>\n![\"\u5730\u5f62\"](\"https:\/\/hungking.cc\/assets\/imgs\/indeex.cc\/WebGPUWGSLbase3.gif\")
<\/p>\n
code enjoy! \ud83e\udd96\ud83e\udd96\ud83e\udd96<\/p>\n
\u4f5c\u8005\uff1aindeex <\/p>\n
\u94fe\u63a5\uff1ahttps:\/\/indeex.club<\/a> <\/p>\n\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5730\u5f62\u5176\u5b9e\u5c31\u662f\u5e26\u9ad8\u5ea6\u7684\u7eb9\u7406\uff0c\u53c8\u79f0\u9ad8\u7a0b\u7eb9\u7406\u6216\u9ad8\u5ea6\u8d34\u56fe\u3002 engine \u4fee\u6539\u4e4b\u524d\u7684engine\u4ee3\u7801\uff1a \/\/Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[15],"_links":{"self":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/278"}],"collection":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/comments?post=278"}],"version-history":[{"count":1,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/278\/revisions"}],"predecessor-version":[{"id":279,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/posts\/278\/revisions\/279"}],"wp:attachment":[{"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/media?parent=278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/categories?post=278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.indeex.club\/index.php\/wp-json\/wp\/v2\/tags?post=278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}