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cube.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="css/example.css">
<script src="utils/gl-matrix.js"></script>
</head>
<!--
The MIT License (MIT)
Copyright (c) 2020 Tarek Sherif
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-->
<body>
<canvas id="webgpu-canvas"></canvas>
<div id="stats">
<div id="device-info"></div>
<div>
CPU Frame Time: <span id="cpu-time"></span>
</div>
<div>
GPU Draw Time: <span id="gpu-time"></span>
</div>
</div>
<script type="module">
import { checkSupport, addDescription, loadImageBitmaps, createCube, xformMatrix, getMipLevelCount, generate2DMipmap, parseAdapterInfo } from "./utils/utils.js";
import { Timer } from "./utils/Timer.js";
const { mat4 } = glMatrix;
checkSupport();
addDescription(
"Textured, Lit Cube",
"Creating a texture from an ImageBitmap, setting up vertex and uniform buffers, and animating a 3D cube.",
"cube.html"
);
(async () => {
//////////////////////////////////////////
// Set up WebGPU adapter, load
// texture image
//////////////////////////////////////////
const [adapter, [image]] = await Promise.all([
navigator.gpu.requestAdapter(),
loadImageBitmaps(["img/webgpu.png"])
]);
const presentationFormat = navigator.gpu.getPreferredCanvasFormat();
////////////////////////////////////
// Set up device and canvas context
////////////////////////////////////
const [adapterInfo, device] = await Promise.all([
adapter.requestAdapterInfo(),
adapter.requestDevice({
requiredFeatures: adapter.features.has("timestamp-query") ? ["timestamp-query"] : []
})
]);
const canvas = document.getElementById("webgpu-canvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const context = canvas.getContext("webgpu");
context.configure({
device,
format: presentationFormat
});
document.getElementById("device-info").innerText = parseAdapterInfo(adapterInfo);
const timer = new Timer(device);
const cpuTimeDisplay = document.getElementById("cpu-time");
const gpuTimeDisplay = document.getElementById("gpu-time");
////////////////////////////////////////
// Create vertex buffers and load data
////////////////////////////////////////
const cubeData = createCube();
const numVertices = cubeData.positions.length / 3;
const positionBuffer = device.createBuffer({
size: cubeData.positions.byteLength,
usage: GPUBufferUsage.VERTEX | GPUBufferUsage.COPY_DST
});
const normalBuffer = device.createBuffer({
size: cubeData.normals.byteLength,
usage: GPUBufferUsage.VERTEX | GPUBufferUsage.COPY_DST
});
const uvBuffer = device.createBuffer({
size: cubeData.uvs.byteLength,
usage: GPUBufferUsage.VERTEX | GPUBufferUsage.COPY_DST
});
device.queue.writeBuffer(positionBuffer, 0, cubeData.positions);
device.queue.writeBuffer(normalBuffer, 0, cubeData.normals);
device.queue.writeBuffer(uvBuffer, 0, cubeData.uvs);
/////////////////
// Uniform data
/////////////////
const eyePosition = new Float32Array([1, 1, 1]);
const lightPosition = new Float32Array([1, 1, 1]);
const projectionMatrix = mat4.create();
const viewMatrix = mat4.create();
const modelMatrix = mat4.create();
const viewProjectionMatrix = mat4.create();
const rotation = [0, 0, 0];
mat4.perspectiveZO(projectionMatrix, Math.PI / 2, canvas.width / canvas.height, 0.1, 10.0)
mat4.lookAt(viewMatrix, [1, 1, 1], [0, 0, 0], [0, 1, 0]);
mat4.multiply(viewProjectionMatrix, projectionMatrix, viewMatrix);
////////////////////////////
// Create uniform buffers
////////////////////////////
const vertexUniformBuffer = device.createBuffer({
size: 128,
usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST
});
const fragmentUniformBuffer = device.createBuffer({
size: 32,
usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST
});
device.queue.writeBuffer(vertexUniformBuffer, 64, viewProjectionMatrix);
device.queue.writeBuffer(fragmentUniformBuffer, 0, eyePosition);
device.queue.writeBuffer(fragmentUniformBuffer, 16, lightPosition);
/////////////////////////////////////////
// Create texture, sampler and load data
/////////////////////////////////////////
const sampler = device.createSampler({
minFilter: "linear",
magFilter: "linear",
mipmapFilter: "linear"
});
const texture = device.createTexture({
size: [image.width, image.height],
format: "rgba8unorm",
mipLevelCount: getMipLevelCount(image.width, image.height),
usage: GPUTextureUsage.TEXTURE_BINDING | GPUTextureUsage.COPY_DST | GPUTextureUsage.RENDER_ATTACHMENT
});
device.queue.copyExternalImageToTexture(
{ source: image, flipY: true },
{ texture },
{
width: image.width,
height: image.height
}
);
generate2DMipmap(device, texture);
///////////////////////////
// Create shader module
///////////////////////////
const cubeShaderModule = device.createShaderModule({
code: `
struct VertexUniforms {
worldMatrix: mat4x4f ,
viewProjectionMatrix: mat4x4f
};
@group(0) @binding(0) var<uniform> vertexUniforms: VertexUniforms;
struct VSOut{
@builtin(position) clipPosition: vec4f,
@location(0) worldPosition: vec3f,
@location(1) normal: vec3f,
@location(2) uv: vec2f
};
@vertex
fn vs(
@location(0) position: vec4f,
@location(1) normal: vec3f,
@location(2) uv: vec2f,
) -> VSOut {
let worldPosition: vec4f = vertexUniforms.worldMatrix * position;
var vsOut: VSOut;
vsOut.clipPosition = vertexUniforms.viewProjectionMatrix * worldPosition;
vsOut.worldPosition = worldPosition.xyz;
vsOut.normal = (vertexUniforms.worldMatrix * vec4f(normal, 0.0)).xyz;
vsOut.uv = uv;
return vsOut;
}
struct FragmentUniforms {
eyePosition: vec4f,
lightPosition: vec4f
};
@group(0) @binding(1) var<uniform> fragmentUniforms: FragmentUniforms;
@group(0) @binding(2) var textureSampler: sampler;
@group(0) @binding(3) var textureData: texture_2d<f32>;
@fragment
fn fs(fsIn: VSOut) -> @location(0) vec4f {
let surfaceColor: vec3f = textureSample(textureData, textureSampler, fsIn.uv).rgb;
let normal: vec3f = normalize(fsIn.normal);
let eyeVec: vec3f = normalize(fragmentUniforms.eyePosition.xyz - fsIn.worldPosition);
let incidentVec: vec3f = normalize(fsIn.worldPosition - fragmentUniforms.lightPosition.xyz);
let lightVec: vec3f = -incidentVec;
let diffuse: f32 = max(dot(lightVec, normal), 0.0);
let highlight: f32 = pow(max(dot(eyeVec, reflect(incidentVec, normal)), 0.0), 100.0);
let ambient: f32 = 0.1;
return vec4f(surfaceColor * (diffuse + highlight + ambient), 1.0);
}
`
});
///////////////////////////
// Create render pipeline
///////////////////////////
const pipeline = device.createRenderPipeline({
layout: 'auto',
vertex: {
module: cubeShaderModule,
entryPoint: "vs",
buffers: [
{
arrayStride: 12,
attributes: [{
shaderLocation: 0,
format: "float32x3",
offset: 0
}]
},
{
arrayStride: 12,
attributes: [{
shaderLocation: 1,
format: "float32x3",
offset: 0
}]
},
{
arrayStride: 8,
attributes: [{
shaderLocation: 2,
format: "float32x2",
offset: 0
}]
}
]
},
fragment: {
module: cubeShaderModule,
entryPoint: "fs",
targets: [{
format: presentationFormat
}]
},
multisample: {
count: 4
},
primitive: {
topology: "triangle-list",
cullMode: "back"
},
depthStencil: {
format: "depth24plus",
depthWriteEnabled: true,
depthCompare: "less"
}
});
const sceneUniformBindGroup = device.createBindGroup({
layout: pipeline.getBindGroupLayout(0),
entries: [
{
binding: 0,
resource: {
buffer: vertexUniformBuffer
}
},
{
binding: 1,
resource: {
buffer: fragmentUniformBuffer
}
},
{
binding: 2,
resource: sampler
},
{
binding: 3,
resource: texture.createView()
}
]
});
///////////////////////////
// Render pass description
///////////////////////////
let msaaTexture = device.createTexture({
label: 'msaa texture',
size: [canvas.width, canvas.height],
format: presentationFormat,
usage: GPUTextureUsage.RENDER_ATTACHMENT,
sampleCount: 4
});
let depthTexture = device.createTexture({
size: [canvas.width, canvas.height],
format: "depth24plus",
usage: GPUTextureUsage.RENDER_ATTACHMENT,
sampleCount: 4
});
const renderPassDescription = {
colorAttachments: [{
view: msaaTexture.createView(),
resolveTarget: context.getCurrentTexture().createView(),
loadOp: 'clear',
storeOp: 'store',
clearValue: [0, 0, 0, 1]
}],
depthStencilAttachment: {
view: depthTexture.createView(),
depthClearValue: 1,
depthLoadOp: 'clear',
depthStoreOp: "store"
},
timestampWrites: timer.gpuPassDescriptor("draw")
};
window.addEventListener("resize", () => {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
mat4.perspectiveZO(projectionMatrix, Math.PI / 2, canvas.width / canvas.height, 0.1, 10.0)
mat4.multiply(viewProjectionMatrix, projectionMatrix, viewMatrix);
device.queue.writeBuffer(vertexUniformBuffer, 64, viewProjectionMatrix);
msaaTexture.destroy();
msaaTexture = device.createTexture({
label: 'msaa texture',
size: [canvas.width, canvas.height],
format: presentationFormat,
usage: GPUTextureUsage.RENDER_ATTACHMENT,
sampleCount: 4
});
depthTexture.destroy();
depthTexture = device.createTexture({
size: [canvas.width, canvas.height],
format: "depth24plus",
usage: GPUTextureUsage.RENDER_ATTACHMENT,
sampleCount: 4
});
renderPassDescription.colorAttachments[0].view = msaaTexture.createView()
renderPassDescription.depthStencilAttachment.view = depthTexture.createView()
});
let lastTime;
requestAnimationFrame(function draw(time) {
timer.cpuTimeStart("frame");
lastTime = lastTime ?? time;
const dt = time - lastTime;
lastTime = time;
/////////////////////////
// Update uniform buffer
/////////////////////////
rotation[0] += 0.001 * dt;
rotation[1] += 0.002 * dt;
xformMatrix(modelMatrix, null, rotation, null);
device.queue.writeBuffer(vertexUniformBuffer, 0, modelMatrix);
renderPassDescription.colorAttachments[0].resolveTarget = context.getCurrentTexture().createView();
const commandEncoder = device.createCommandEncoder();
const renderPass = commandEncoder.beginRenderPass(renderPassDescription);
renderPass.setPipeline(pipeline);
// First argument here refers to array index
// in pipeline vertexState.vertexBuffers
renderPass.setVertexBuffer(0, positionBuffer);
renderPass.setVertexBuffer(1, normalBuffer);
renderPass.setVertexBuffer(2, uvBuffer);
// First argument here refers to array index
// in pipeline layout.bindGroupLayouts
renderPass.setBindGroup(0, sceneUniformBindGroup);
renderPass.draw(numVertices, 1);
renderPass.end();
timer.gpuBeforeSubmit(commandEncoder);
device.queue.submit([commandEncoder.finish()]);
timer.gpuAfterSubmit();
timer.cpuTimeEnd("frame");
cpuTimeDisplay.innerText = `${timer.cpuTimes["frame"].toFixed(2)}ms`;
gpuTimeDisplay.innerText = timer.hasGPUTimer ? `${timer.gpuTimes["draw"].toFixed(2)}ms` : "N/A";
requestAnimationFrame(draw);
});
})();
</script>
</body>
</html>