diff --git a/.github/workflows/build-and-deploy.yml b/.github/workflows/build-and-deploy.yml new file mode 100644 index 00000000..d35abd7b --- /dev/null +++ b/.github/workflows/build-and-deploy.yml @@ -0,0 +1,39 @@ + + +name: Build and Deploy +on: + push: + branches: + - master +jobs: + build-and-deploy: + runs-on: ubuntu-latest + steps: + - name: Checkout 🛎️ + uses: actions/checkout@v2.3.1 + with: + persist-credentials: false + + - uses: actions/setup-node@v2-beta + with: + node-version: "15.x" + + - uses: actions/cache@v2 + with: + # npm cache files are stored in `~/.npm` on Linux/macOS + path: ~/.npm + key: ${{ runner.os }}-build-${{ hashFiles('**/package-lock.json') }} + + - name: Install and Build 🔧 + run: | + npm ci + export NODE_ENV=production + npm run-script build + touch dist/.nojekyll + - name: Deploy 🚀 + uses: JamesIves/github-pages-deploy-action@3.6.2 + with: + GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} + BRANCH: gh-pages + FOLDER: dist + CLEAN: true diff --git a/.gitignore b/.gitignore new file mode 100644 index 00000000..30fd2a83 --- /dev/null +++ b/.gitignore @@ -0,0 +1,64 @@ +# Logs +logs +*.log +npm-debug.log* +yarn-debug.log* +yarn-error.log* + +# Runtime data +pids +*.pid +*.seed +*.pid.lock + +# Directory for instrumented libs generated by jscoverage/JSCover +lib-cov + +# Coverage directory used by tools like istanbul +coverage + +# nyc test coverage +.nyc_output + +# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) +.grunt + +# Bower dependency directory (https://bower.io/) +bower_components + +# node-waf configuration +.lock-wscript + +# Compiled binary addons (https://nodejs.org/api/addons.html) +build/Release + +# Dependency directories +node_modules/ +jspm_packages/ + +# Typescript v1 declaration files +typings/ + +# Optional npm cache directory +.npm + +# Optional eslint cache +.eslintcache + +# Optional REPL history +.node_repl_history + +# Output of 'npm pack' +*.tgz + +# Yarn Integrity file +.yarn-integrity + +# dotenv environment variables file +.env + +# next.js build output +.next + +dist/bundle.js +dist/bundle.js.map \ No newline at end of file diff --git a/.vs/ProjectSettings.json b/.vs/ProjectSettings.json new file mode 100644 index 00000000..f8b48885 --- /dev/null +++ b/.vs/ProjectSettings.json @@ -0,0 +1,3 @@ +{ + "CurrentProjectSetting": null +} \ No newline at end of file diff --git a/.vs/VSWorkspaceState.json b/.vs/VSWorkspaceState.json new file mode 100644 index 00000000..a32fb914 --- /dev/null +++ b/.vs/VSWorkspaceState.json @@ -0,0 +1,11 @@ +{ + "ExpandedNodes": [ + "", + "\\src", + "\\src\\rendering", + "\\src\\rendering\\gl", + "\\src\\shaders" + ], + "SelectedNode": "\\src\\rendering\\gl\\OpenGLRenderer.ts", + "PreviewInSolutionExplorer": false +} \ No newline at end of file diff --git a/.vs/hw01-noisy-planet/v16/.suo b/.vs/hw01-noisy-planet/v16/.suo new file mode 100644 index 00000000..8406595c Binary files /dev/null and b/.vs/hw01-noisy-planet/v16/.suo differ diff --git a/.vs/slnx.sqlite b/.vs/slnx.sqlite new file mode 100644 index 00000000..4538f1aa Binary files /dev/null and b/.vs/slnx.sqlite differ diff --git a/MyPlanet1.png b/MyPlanet1.png new file mode 100644 index 00000000..354b259a Binary files /dev/null and b/MyPlanet1.png differ diff --git a/MyPlanetDesat1.png b/MyPlanetDesat1.png new file mode 100644 index 00000000..d5f059f4 Binary files /dev/null and b/MyPlanetDesat1.png differ diff --git a/MyPlanetLambert.png b/MyPlanetLambert.png new file mode 100644 index 00000000..e00d59a3 Binary files /dev/null and b/MyPlanetLambert.png differ diff --git a/README.md b/README.md index c89dda1c..df8006b3 100644 --- a/README.md +++ b/README.md @@ -1,5 +1,34 @@ # CIS 566 Project 1: Noisy Planets +Name: Haowei Li +PennKey: lihaowei + +A fractal-brownian-motion function https://gist.github.com/patriciogonzalezvivo/670c22f3966e662d2f83 +Live Demo Link: https://hli605.github.io/hw01-noisy-planet/ + +Planet with Blinn-Phong reflection model: +![](./MyPlanet1.png) + +Planet with Blinn-Phong and desaturation to a cyan color: +![](./MyPlanetDesat1.png) + +Planet with Lambert reflection model: +![](./MyPlanetLambert.png) + +Technical Details: +1. I used a simple 3D perlin noise function and incorporate that function inside the fractal-brownian-motion noise function. Then, I used the fbm noise function to generate the surface height of the planet. Next, according to different heights at different location, I created 5 biomes: Ocean, Beach, Grassland, Stone Mountains, Snow Mountains. + +2. I used "sin" and "bias" toolbox function to simulate the High tide/low tide effects of the ocean. I used "gain" toolbox function to enable the players to desaturate the color of the planet. I used "smoothstep" toolbox function to make the smooth transition between different biomes. + +3. I implemented "Lambert" and "Blinn-Phong" reflection model. Also, I assigned different specular value for different biomes. + +4. The user can choose whether to use Blinn-Phong reflection or Lambert reflection. The user can modify the desaturation color, the desaturation percentage, the landscape height, the time scale, and the distribution of biomes. + + + + + + ## Objective - Continue practicing WebGL and Typescript - Experiment with noise functions to procedurally generate the surface of a planet diff --git a/dist/index.html b/dist/index.html new file mode 100644 index 00000000..062fed2f --- /dev/null +++ b/dist/index.html @@ -0,0 +1,20 @@ + + + + Project 0: Getting Started | CIS 566 + + + + + + + diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 00000000..e1a47a34 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,3120 @@ +{ + "requires": true, + "lockfileVersion": 1, + "dependencies": { + "3d-view": { + "version": "2.0.1", + "resolved": "https://registry.npmjs.org/3d-view/-/3d-view-2.0.1.tgz", + "integrity": "sha512-YSLRHXNpSziaaiK2R0pI5+JKguoJVbtWmIv9YyBFtl0+q42kQwJB/JUulbFR/1zYFm58ifjKQ6kVdgZ6tyKtCA==", + "requires": { + "matrix-camera-controller": "^2.1.1", + 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"dev": true + } + } +} diff --git a/package.json b/package.json new file mode 100644 index 00000000..16277910 --- /dev/null +++ b/package.json @@ -0,0 +1,22 @@ +{ + "scripts": { + "start": "webpack-dev-server --no-hot --live-reload", + "build": "webpack" + }, + "devDependencies": { + "@types/dat.gui": "^0.7.7", + "@types/webgl2": "0.0.6", + "ts-loader": "^9.2.5", + "typescript": "^4.4.2", + "webpack": "^5.52.0", + "webpack-cli": "^4.8.0", + "webpack-dev-server": "^4.1.1", + "webpack-glsl-loader": "^1.0.1" + }, + "dependencies": { + "3d-view-controls": "^2.2.2", + "dat.gui": "^0.7.7", + "gl-matrix": "^3.3.0", + "stats-js": "^1.0.1" + } +} diff --git a/src/Camera.ts b/src/Camera.ts new file mode 100644 index 00000000..77a76105 --- /dev/null +++ b/src/Camera.ts @@ -0,0 +1,41 @@ +var CameraControls = require('3d-view-controls'); +import {vec3, mat4} from 'gl-matrix'; + +class Camera { + controls: any; + projectionMatrix: mat4 = mat4.create(); + viewMatrix: mat4 = mat4.create(); + fovy: number = 45; + aspectRatio: number = 1; + near: number = 0.1; + far: number = 1000; + position: vec3 = vec3.create(); + direction: vec3 = vec3.create(); + target: vec3 = vec3.create(); + up: vec3 = vec3.create(); + + constructor(position: vec3, target: vec3) { + this.controls = CameraControls(document.getElementById('canvas'), { + eye: position, + center: target, + }); + vec3.add(this.target, this.position, this.direction); + mat4.lookAt(this.viewMatrix, this.controls.eye, this.controls.center, this.controls.up); + } + + setAspectRatio(aspectRatio: number) { + this.aspectRatio = aspectRatio; + } + + updateProjectionMatrix() { + mat4.perspective(this.projectionMatrix, this.fovy, this.aspectRatio, this.near, this.far); + } + + update() { + this.controls.tick(); + vec3.add(this.target, this.position, this.direction); + mat4.lookAt(this.viewMatrix, this.controls.eye, this.controls.center, this.controls.up); + } +}; + +export default Camera; diff --git a/src/geometry/Cube.ts b/src/geometry/Cube.ts new file mode 100644 index 00000000..24bf111a --- /dev/null +++ b/src/geometry/Cube.ts @@ -0,0 +1,134 @@ +import { vec3, vec4 } from 'gl-matrix'; +import Drawable from '../rendering/gl/Drawable'; +import { gl } from '../globals'; + +class Cube extends Drawable { + indices: Uint32Array; + positions: Float32Array; + normals: Float32Array; + center: vec4; + + constructor(center: vec3) { + super(); + this.center = vec4.fromValues(center[0], center[1], center[2], 1); + } + + create() { + // array of vertex indices + this.indices = new Uint32Array([ + 0, 1, 2, + 0, 2, 3, + + 4, 5, 6, + 4, 6, 7, + + 8, 9, 10, + 8, 10, 11, + + 12, 13, 14, + 12, 14, 15, + + 16, 17, 18, + 16, 18, 19, + + 20, 21, 22, + 20, 22, 23 + ]); + + // array of vertex normals + this.normals = new Float32Array([ + 0, 0, 1, 0, + 0, 0, 1, 0, + 0, 0, 1, 0, + 0, 0, 1, 0, + + 0, 0, -1, 0, + 0, 0, -1, 0, + 0, 0, -1, 0, + 0, 0, -1, 0, + + 1, 0, 0, 0, + 1, 0, 0, 0, + 1, 0, 0, 0, + 1, 0, 0, 0, + + -1, 0, 0, 0, + -1, 0, 0, 0, + -1, 0, 0, 0, + -1, 0, 0, 0, + + 0, 1, 0, 0, + 0, 1, 0, 0, + 0, 1, 0, 0, + 0, 1, 0, 0, + + 0, -1, 0, 0, + 0, -1, 0, 0, + 0, -1, 0, 0, + 0, -1, 0, 0 + ]); + + // array of vertex positions + this.positions = new Float32Array([ + 0.5, 0.5, 0.5, 1.0, + 0.5, -0.5, 0.5, 1.0, + -0.5, -0.5, 0.5, 1.0, + -0.5, 0.5, 0.5, 1.0, + + -0.5, 0.5, -0.5, 1.0, + -0.5, -0.5, -0.5, 1.0, + 0.5, -0.5, -0.5, 1.0, + 0.5, 0.5, -0.5, 1.0, + + 0.5, 0.5, -0.5, 1.0, + 0.5, -0.5, -0.5, 1.0, + 0.5, -0.5, 0.5, 1.0, + 0.5, 0.5, 0.5, 1.0, + + -0.5, 0.5, 0.5, 1.0, + -0.5, -0.5, 0.5, 1.0, + -0.5, -0.5, -0.5, 1.0, + -0.5, 0.5, -0.5, 1.0, + + 0.5, 0.5, -0.5, 1.0, + 0.5, 0.5, 0.5, 1.0, + -0.5, 0.5, 0.5, 1.0, + -0.5, 0.5, -0.5, 1.0, + + 0.5, -0.5, 0.5, 1.0, + 0.5, -0.5, -0.5, 1.0, + -0.5, -0.5, -0.5, 1.0, + -0.5, -0.5, 0.5, 1.0 + ]); + + for (let i = 0; i < this.positions.length; i++) { + if (i % 4 == 0) { + this.positions[i] += this.center[0]; + } + else if (i % 4 == 1) { + this.positions[i] += this.center[1]; + } + else if (i % 4 == 2) { + this.positions[i] += this.center[2]; + } + } + + this.generateIdx(); + this.generatePos(); + this.generateNor(); + + this.count = this.indices.length; + gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.bufIdx); + gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices, gl.STATIC_DRAW); + + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufNor); + gl.bufferData(gl.ARRAY_BUFFER, this.normals, gl.STATIC_DRAW); + + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufPos); + gl.bufferData(gl.ARRAY_BUFFER, this.positions, gl.STATIC_DRAW); + + console.log(`Created cube`); + } +}; + +export default Cube; \ No newline at end of file diff --git a/src/geometry/Icosphere.ts b/src/geometry/Icosphere.ts new file mode 100644 index 00000000..412995ba --- /dev/null +++ b/src/geometry/Icosphere.ts @@ -0,0 +1,179 @@ +import {vec3, vec4} from 'gl-matrix'; +import Drawable from '../rendering/gl/Drawable'; +import {gl} from '../globals'; + +class Icosphere extends Drawable { + buffer: ArrayBuffer; + indices: Uint32Array; + positions: Float32Array; + normals: Float32Array; + center: vec4; + + constructor(center: vec3, public radius: number, public subdivisions: number) { + super(); // Call the constructor of the super class. This is required. + this.center = vec4.fromValues(center[0], center[1], center[2], 1); + } + + create() { + const X = 0.525731112119133606; + const Z = 0.850650808352039932; + const N = 0; + + let maxIndexCount = 20 * Math.pow(4, this.subdivisions); + let maxVertexCount = 10 * Math.pow(4, this.subdivisions) + 2; + + // Create buffers to back geometry data + // Index data will ping pong back and forth between buffer0 and buffer1 during creation + // All data will be in buffer0 at the end + const buffer0 = new ArrayBuffer( + maxIndexCount * 3 * Uint32Array.BYTES_PER_ELEMENT + + maxVertexCount * 4 * Float32Array.BYTES_PER_ELEMENT + + maxVertexCount * 4 * Float32Array.BYTES_PER_ELEMENT + ); + const buffer1 = new ArrayBuffer( + maxIndexCount * 3 * Uint32Array.BYTES_PER_ELEMENT + ); + const buffers = [buffer0, buffer1]; + let b = 0; + + const indexByteOffset = 0; + const vertexByteOffset = maxIndexCount * 3 * Uint32Array.BYTES_PER_ELEMENT; + const normalByteOffset = vertexByteOffset; + const positionByteOffset = vertexByteOffset + maxVertexCount * 4 * Float32Array.BYTES_PER_ELEMENT; + + // Create 3-uint buffer views into the backing buffer to represent triangles + // The C++ analogy to this would be something like: + // triangles[i] = reinterpret_cast*>(&buffer[offset]); + let triangles: Array = new Array(20); + let nextTriangles: Array = new Array(); + for (let i = 0; i < 20; ++i) { + triangles[i] = new Uint32Array(buffers[b], indexByteOffset + i * 3 * Uint32Array.BYTES_PER_ELEMENT, 3); + } + + // Create 3-float buffer views into the backing buffer to represent positions + let vertices: Array = new Array(12); + for (let i = 0; i < 12; ++i) { + vertices[i] =new Float32Array(buffer0, vertexByteOffset + i * 4 * Float32Array.BYTES_PER_ELEMENT, 4); + } + + // Initialize normals for a 20-sided icosahedron + vertices[0].set([ -X,N,Z,0 ]); + vertices[1].set([ X,N,Z,0 ]); + vertices[2].set([ -X,N,-Z,0 ]); + vertices[3].set([ X,N,-Z,0 ]); + vertices[4].set([ N,Z,X,0 ]); + vertices[5].set([ N,Z,-X,0 ]); + vertices[6].set([ N,-Z,X,0 ]); + vertices[7].set([ N,-Z,-X,0 ]); + vertices[8].set([ Z,X,N,0 ]); + vertices[9].set([ -Z,X, N,0 ]); + vertices[10].set([ Z,-X,N,0 ]); + vertices[11].set([ -Z,-X,N,0 ]); + + // Initialize indices for a 20-sided icosahedron + triangles[0].set([ 0,4,1 ]); + triangles[1].set([ 0,9,4 ]); + triangles[2].set([ 9,5,4 ]); + triangles[3].set([ 4,5,8 ]); + triangles[4].set([ 4,8,1 ]); + triangles[5].set([ 8,10,1 ]); + triangles[6].set([ 8,3,10 ]); + triangles[7].set([ 5,3,8 ]); + triangles[8].set([ 5,2,3 ]); + triangles[9].set([ 2,7,3 ]); + triangles[10].set([ 7,10,3 ]); + triangles[11].set([ 7,6,10 ]); + triangles[12].set([ 7,11,6 ]); + triangles[13].set([ 11,0,6 ]); + triangles[14].set([ 0,1,6 ],); + triangles[15].set([ 6,1,10 ]); + triangles[16].set([ 9,0,11 ]); + triangles[17].set([ 9,11,2 ]); + triangles[18].set([ 9,2,5 ]); + triangles[19].set([ 7,2,11 ]); + + // This loop subdivides the icosahedron + for (let s = 0; s < this.subdivisions; ++s) { + b = 1 - b; + nextTriangles.length = triangles.length * 4; + let triangleIdx = 0; + + // edgeMap maps a pair of vertex indices to a vertex index at their midpoint + // The function `mid` will get that midpoint vertex if it has already been created + // or it will create the vertex and add it to the map + let edgeMap: Map = new Map(); + function mid(v0: number, v1: number): number { + let key = [v0, v1].sort().join('_'); + if (!edgeMap.has(key)) { + let midpoint = new Float32Array(buffer0, vertexByteOffset + vertices.length * 4 * Float32Array.BYTES_PER_ELEMENT, 4); + vec4.add(midpoint, vertices[v0], vertices[v1]); + vec4.normalize(midpoint, midpoint); + edgeMap.set(key, vertices.length); + vertices.push(midpoint); + } + return edgeMap.get(key); + } + + for (let t = 0; t < triangles.length; ++t) { + let v0 = triangles[t][0]; + let v1 = triangles[t][1]; + let v2 = triangles[t][2]; + let v3 = mid(v0, v1); // Get or create a vertex between these two vertices + let v4 = mid(v1, v2); + let v5 = mid(v2, v0); + + let t0 = nextTriangles[triangleIdx] = new Uint32Array(buffers[b], indexByteOffset + (triangleIdx++) * 3 * Uint32Array.BYTES_PER_ELEMENT, 3); + let t1 = nextTriangles[triangleIdx] = new Uint32Array(buffers[b], indexByteOffset + (triangleIdx++) * 3 * Uint32Array.BYTES_PER_ELEMENT, 3); + let t2 = nextTriangles[triangleIdx] = new Uint32Array(buffers[b], indexByteOffset + (triangleIdx++) * 3 * Uint32Array.BYTES_PER_ELEMENT, 3); + let t3 = nextTriangles[triangleIdx] = new Uint32Array(buffers[b], indexByteOffset + (triangleIdx++) * 3 * Uint32Array.BYTES_PER_ELEMENT, 3); + + let triangleOffset = nextTriangles.length; + t0.set([v0, v3, v5]); + t1.set([v3, v4, v5]); + t2.set([v3, v1, v4]); + t3.set([v5, v4, v2]); + } + + // swap buffers + let temp = triangles; + triangles = nextTriangles; + nextTriangles = temp; + } + + if (b === 1) { + // if indices did not end up in buffer0, copy them there now + let temp0 = new Uint32Array(buffer0, 0, 3 * triangles.length); + let temp1 = new Uint32Array(buffer1, 0, 3 * triangles.length); + temp0.set(temp1); + } + + // Populate one position for each normal + for (let i = 0; i < vertices.length; ++i) { + let pos = new Float32Array(buffer0, positionByteOffset + i * 4 * Float32Array.BYTES_PER_ELEMENT, 4); + vec4.scaleAndAdd(pos, this.center, vertices[i], this.radius); + } + + this.buffer = buffer0; + this.indices = new Uint32Array(this.buffer, indexByteOffset, triangles.length * 3); + this.normals = new Float32Array(this.buffer, normalByteOffset, vertices.length * 4); + this.positions = new Float32Array(this.buffer, positionByteOffset, vertices.length * 4); + + this.generateIdx(); + this.generatePos(); + this.generateNor(); + + this.count = this.indices.length; + gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.bufIdx); + gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices, gl.STATIC_DRAW); + + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufNor); + gl.bufferData(gl.ARRAY_BUFFER, this.normals, gl.STATIC_DRAW); + + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufPos); + gl.bufferData(gl.ARRAY_BUFFER, this.positions, gl.STATIC_DRAW); + + console.log(`Created icosphere with ${vertices.length} vertices`); + } +}; + +export default Icosphere; diff --git a/src/geometry/Square.ts b/src/geometry/Square.ts new file mode 100644 index 00000000..1a21a10d --- /dev/null +++ b/src/geometry/Square.ts @@ -0,0 +1,47 @@ +import {vec3, vec4} from 'gl-matrix'; +import Drawable from '../rendering/gl/Drawable'; +import {gl} from '../globals'; + +class Square extends Drawable { + indices: Uint32Array; + positions: Float32Array; + normals: Float32Array; + center: vec4; + + constructor(center: vec3) { + super(); // Call the constructor of the super class. This is required. + this.center = vec4.fromValues(center[0], center[1], center[2], 1); + } + + create() { + + this.indices = new Uint32Array([0, 1, 2, + 0, 2, 3]); + this.normals = new Float32Array([0, 0, 1, 0, + 0, 0, 1, 0, + 0, 0, 1, 0, + 0, 0, 1, 0]); + this.positions = new Float32Array([-1, -1, 0, 1, + 1, -1, 0, 1, + 1, 1, 0, 1, + -1, 1, 0, 1]); + + this.generateIdx(); + this.generatePos(); + this.generateNor(); + + this.count = this.indices.length; + gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.bufIdx); + gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, this.indices, gl.STATIC_DRAW); + + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufNor); + gl.bufferData(gl.ARRAY_BUFFER, this.normals, gl.STATIC_DRAW); + + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufPos); + gl.bufferData(gl.ARRAY_BUFFER, this.positions, gl.STATIC_DRAW); + + console.log(`Created square`); + } +}; + +export default Square; diff --git a/src/globals.ts b/src/globals.ts new file mode 100644 index 00000000..cac5bf28 --- /dev/null +++ b/src/globals.ts @@ -0,0 +1,5 @@ + +export var gl: WebGL2RenderingContext; +export function setGL(_gl: WebGL2RenderingContext) { + gl = _gl; +} diff --git a/src/main.ts b/src/main.ts new file mode 100644 index 00000000..d42dc9c4 --- /dev/null +++ b/src/main.ts @@ -0,0 +1,183 @@ +import { vec3, vec4 } from 'gl-matrix'; +const Stats = require('stats-js'); +import * as DAT from 'dat.gui'; +import Icosphere from './geometry/Icosphere'; +import Square from './geometry/Square'; +import Cube from './geometry/Cube'; +import OpenGLRenderer from './rendering/gl/OpenGLRenderer'; +import Camera from './Camera'; +import { setGL } from './globals'; +import ShaderProgram, { Shader } from './rendering/gl/ShaderProgram'; + +// Define an object with application parameters and button callbacks +// This will be referred to by dat.GUI's functions that add GUI elements. +const controls = { + tesselations: 8, + 'Load Scene': loadScene, // A function pointer, essentially + DesaturateColor: [255, 255, 255], + DesaturatePercent: 0.0, + LandscapeHeight: 1.5, + TimeScale: 1.0, + SandHeight: 0.2, + GrassHeight: 0.4, + StoneHeight: 0.75, + Blinn_phong: true, +}; + +let icosphere: Icosphere; +let square: Square; +let cube: Cube; +let prevTesselations: number = 8; + +function loadScene() { + icosphere = new Icosphere(vec3.fromValues(0, 0, 0), 1, controls.tesselations); + icosphere.create(); + square = new Square(vec3.fromValues(0, 0, 0)); + square.create(); + cube = new Cube(vec3.fromValues(3, 0, 0)); + cube.create(); +} + +function main() { + // Initial display for framerate + const stats = Stats(); + stats.setMode(0); + stats.domElement.style.position = 'absolute'; + stats.domElement.style.left = '0px'; + stats.domElement.style.top = '0px'; + document.body.appendChild(stats.domElement); + + // Add controls to the gui + const gui = new DAT.GUI(); + gui.add(controls, 'tesselations', 0, 9).step(1); + gui.add(controls, 'Load Scene'); + gui.add(controls, 'Blinn_phong').onChange(setBlinnReflection); + gui.addColor(controls, 'DesaturateColor').onChange(setAllGeometryColor); + gui.add(controls, "DesaturatePercent", 0.0, 1.0).step(0.01).onChange(setDesatPercent); + gui.add(controls, "LandscapeHeight", 0.0, 5.0).step(0.1).onChange(setLandscapeHeight); + gui.add(controls, "TimeScale", 0.0, 5.0).step(0.1).onChange(setTimeScale); + gui.add(controls, "SandHeight", 0.1, 0.3).step(0.01).onChange(setSandHeight); + gui.add(controls, "GrassHeight", 0.3, 0.6).step(0.01).onChange(setGrassHeight); + gui.add(controls, "StoneHeight", 0.6, 0.9).step(0.01).onChange(setStoneHeight); + + // get canvas and webgl context + const canvas = document.getElementById('canvas'); + const gl = canvas.getContext('webgl2'); + if (!gl) { + alert('WebGL 2 not supported!'); + } + // `setGL` is a function imported above which sets the value of `gl` in the `globals.ts` module. + // Later, we can import `gl` from `globals.ts` to access it + setGL(gl); + + // Initial call to load scene + loadScene(); + + const camera = new Camera(vec3.fromValues(0, 0, 5), vec3.fromValues(0, 0, 0)); + + const renderer = new OpenGLRenderer(canvas); + renderer.setClearColor(0.2, 0.2, 0.2, 1); + gl.enable(gl.DEPTH_TEST); + + const lambert = new ShaderProgram([ + new Shader(gl.VERTEX_SHADER, require('./shaders/lambert-vert.glsl')), + new Shader(gl.FRAGMENT_SHADER, require('./shaders/lambert-frag.glsl')), + ]); + lambert.setGeometryColor(vec4.fromValues(0, 1, 0, 1)); + + const custom = new ShaderProgram([ + new Shader(gl.VERTEX_SHADER, require('./shaders/custom-vert.glsl')), + new Shader(gl.FRAGMENT_SHADER, require('./shaders/custom-frag.glsl')), + ]); + custom.setGeometryColor(vec4.fromValues(1, 1, 1, 1)); + custom.setHeightScale(1.5); + custom.setTimeScale(1.0); + custom.setSandHeight(0.2); + custom.setGrassHeight(0.4); + custom.setStoneHeight(0.75); + custom.setShader(0); + + // This function will be called every frame + function tick() { + camera.update(); + stats.begin(); + gl.viewport(0, 0, window.innerWidth, window.innerHeight); + renderer.clear(); + if (controls.tesselations != prevTesselations) { + prevTesselations = controls.tesselations; + icosphere = new Icosphere(vec3.fromValues(0, 0, 0), 1, prevTesselations); + icosphere.create(); + } + + // Render with custom shader + renderer.render(camera, custom, [ + icosphere, + ]); + + // Render with Lambert shader + //renderer.render(camera, lambert, [ + // icosphere, + // square, + // cube, + //]); + + stats.end(); + + // Tell the browser to call `tick` again whenever it renders a new frame + requestAnimationFrame(tick); + } + + window.addEventListener('resize', function () { + renderer.setSize(window.innerWidth, window.innerHeight); + camera.setAspectRatio(window.innerWidth / window.innerHeight); + camera.updateProjectionMatrix(); + }, false); + + renderer.setSize(window.innerWidth, window.innerHeight); + camera.setAspectRatio(window.innerWidth / window.innerHeight); + camera.updateProjectionMatrix(); + + // Start the render loop + tick(); + + // Help function + function setAllGeometryColor() { + // lambert.setGeometryColor(vec4.fromValues(controls.DesaturateColor[0] / 255.0, controls.DesaturateColor[1] / 255.0, controls.DesaturateColor[2] / 255.0, 1)); + custom.setGeometryColor(vec4.fromValues(controls.DesaturateColor[0] / 255.0, controls.DesaturateColor[1] / 255.0, controls.DesaturateColor[2] / 255.0, 1)); + } + + function setDesatPercent() { + custom.setDesatPercent(controls.DesaturatePercent); + } + + function setLandscapeHeight() { + custom.setHeightScale(controls.LandscapeHeight); + } + + function setTimeScale() { + custom.setTimeScale(controls.TimeScale); + } + + function setSandHeight() { + custom.setSandHeight(controls.SandHeight); + } + + function setGrassHeight() { + custom.setGrassHeight(controls.GrassHeight); + } + + function setStoneHeight() { + custom.setStoneHeight(controls.StoneHeight); + } + + function setBlinnReflection() { + if (controls.Blinn_phong) { + custom.setShader(0); + } + else { + custom.setShader(1); + } + } +} + +main(); diff --git a/src/rendering/gl/Drawable.ts b/src/rendering/gl/Drawable.ts new file mode 100644 index 00000000..3006b5cd --- /dev/null +++ b/src/rendering/gl/Drawable.ts @@ -0,0 +1,67 @@ +import {gl} from '../../globals'; + +abstract class Drawable { + count: number = 0; + + bufIdx: WebGLBuffer; + bufPos: WebGLBuffer; + bufNor: WebGLBuffer; + + idxBound: boolean = false; + posBound: boolean = false; + norBound: boolean = false; + + abstract create() : void; + + destory() { + gl.deleteBuffer(this.bufIdx); + gl.deleteBuffer(this.bufPos); + gl.deleteBuffer(this.bufNor); + } + + generateIdx() { + this.idxBound = true; + this.bufIdx = gl.createBuffer(); + } + + generatePos() { + this.posBound = true; + this.bufPos = gl.createBuffer(); + } + + generateNor() { + this.norBound = true; + this.bufNor = gl.createBuffer(); + } + + bindIdx(): boolean { + if (this.idxBound) { + gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, this.bufIdx); + } + return this.idxBound; + } + + bindPos(): boolean { + if (this.posBound) { + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufPos); + } + return this.posBound; + } + + bindNor(): boolean { + if (this.norBound) { + gl.bindBuffer(gl.ARRAY_BUFFER, this.bufNor); + } + return this.norBound; + } + + elemCount(): number { + return this.count; + } + + drawMode(): GLenum { + return gl.TRIANGLES; + } +}; + +export default Drawable; diff --git a/src/rendering/gl/OpenGLRenderer.ts b/src/rendering/gl/OpenGLRenderer.ts new file mode 100644 index 00000000..60a9f528 --- /dev/null +++ b/src/rendering/gl/OpenGLRenderer.ts @@ -0,0 +1,47 @@ +import { mat4, vec4 } from 'gl-matrix'; +import Drawable from './Drawable'; +import Camera from '../../Camera'; +import { gl } from '../../globals'; +import ShaderProgram from './ShaderProgram'; + +// In this file, `gl` is accessible because it is imported above +class OpenGLRenderer { + time: number; + + constructor(public canvas: HTMLCanvasElement) { + this.time = 0.0; + } + + setClearColor(r: number, g: number, b: number, a: number) { + gl.clearColor(r, g, b, a); + } + + setSize(width: number, height: number) { + this.canvas.width = width; + this.canvas.height = height; + } + + clear() { + gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); + } + + render(camera: Camera, prog: ShaderProgram, drawables: Array) { + let model = mat4.create(); + let viewProj = mat4.create(); + + mat4.identity(model); + mat4.multiply(viewProj, camera.projectionMatrix, camera.viewMatrix); + prog.setModelMatrix(model); + prog.setViewProjMatrix(viewProj); + prog.setTime(this.time); + this.time += 0.01; + + prog.setCameraPos(camera.position); + + for (let drawable of drawables) { + prog.draw(drawable); + } + } +}; + +export default OpenGLRenderer; diff --git a/src/rendering/gl/ShaderProgram.ts b/src/rendering/gl/ShaderProgram.ts new file mode 100644 index 00000000..3d57e53b --- /dev/null +++ b/src/rendering/gl/ShaderProgram.ts @@ -0,0 +1,190 @@ +import { vec4, mat4, vec3 } from 'gl-matrix'; +import Drawable from './Drawable'; +import { gl } from '../../globals'; + +var activeProgram: WebGLProgram = null; + +export class Shader { + shader: WebGLShader; + + constructor(type: number, source: string) { + this.shader = gl.createShader(type); + gl.shaderSource(this.shader, source); + gl.compileShader(this.shader); + + if (!gl.getShaderParameter(this.shader, gl.COMPILE_STATUS)) { + throw gl.getShaderInfoLog(this.shader); + } + } +}; + +class ShaderProgram { + prog: WebGLProgram; + + attrPos: number; + attrNor: number; + attrCol: number; + + unifModel: WebGLUniformLocation; + unifModelInvTr: WebGLUniformLocation; + unifViewProj: WebGLUniformLocation; + unifColor: WebGLUniformLocation; + unifTime: WebGLUniformLocation; + unifColorDesatPercent: WebGLUniformLocation; + unifHeightScale: WebGLUniformLocation; + unifTimeScale: WebGLUniformLocation; + unifSandHeight: WebGLUniformLocation; + unifGrassHeight: WebGLUniformLocation; + unifStoneHeight: WebGLUniformLocation; + unifShader: WebGLUniformLocation; + unifCameraPos: WebGLUniformLocation; + + constructor(shaders: Array) { + this.prog = gl.createProgram(); + + for (let shader of shaders) { + gl.attachShader(this.prog, shader.shader); + } + gl.linkProgram(this.prog); + if (!gl.getProgramParameter(this.prog, gl.LINK_STATUS)) { + throw gl.getProgramInfoLog(this.prog); + } + + this.attrPos = gl.getAttribLocation(this.prog, "vs_Pos"); + this.attrNor = gl.getAttribLocation(this.prog, "vs_Nor"); + this.attrCol = gl.getAttribLocation(this.prog, "vs_Col"); + this.unifModel = gl.getUniformLocation(this.prog, "u_Model"); + this.unifModelInvTr = gl.getUniformLocation(this.prog, "u_ModelInvTr"); + this.unifViewProj = gl.getUniformLocation(this.prog, "u_ViewProj"); + this.unifColor = gl.getUniformLocation(this.prog, "u_Color"); + this.unifTime = gl.getUniformLocation(this.prog, "u_Time"); + this.unifColorDesatPercent = gl.getUniformLocation(this.prog, "u_DesatPercent"); + this.unifHeightScale = gl.getUniformLocation(this.prog, "u_heightScale"); + this.unifTimeScale = gl.getUniformLocation(this.prog, "u_timeScale"); + this.unifSandHeight = gl.getUniformLocation(this.prog, "u_sandHeight"); + this.unifGrassHeight = gl.getUniformLocation(this.prog, "u_grassHeight"); + this.unifStoneHeight = gl.getUniformLocation(this.prog, "u_stoneHeight"); + this.unifShader = gl.getUniformLocation(this.prog, "u_Shader"); + this.unifCameraPos = gl.getUniformLocation(this.prog, "u_CameraPos"); + } + + use() { + if (activeProgram !== this.prog) { + gl.useProgram(this.prog); + activeProgram = this.prog; + } + } + + setModelMatrix(model: mat4) { + this.use(); + if (this.unifModel !== -1) { + gl.uniformMatrix4fv(this.unifModel, false, model); + } + + if (this.unifModelInvTr !== -1) { + let modelinvtr: mat4 = mat4.create(); + mat4.transpose(modelinvtr, model); + mat4.invert(modelinvtr, modelinvtr); + gl.uniformMatrix4fv(this.unifModelInvTr, false, modelinvtr); + } + } + + setViewProjMatrix(vp: mat4) { + this.use(); + if (this.unifViewProj !== -1) { + gl.uniformMatrix4fv(this.unifViewProj, false, vp); + } + } + + setGeometryColor(color: vec4) { + this.use(); + if (this.unifColor !== -1) { + gl.uniform4fv(this.unifColor, color); + } + } + + setTime(time: number) { + this.use(); + if (this.unifTime !== -1) { + gl.uniform1f(this.unifTime, time); + } + } + + setDesatPercent(desatPercent: number) { + this.use(); + if (this.unifColorDesatPercent !== -1) { + gl.uniform1f(this.unifColorDesatPercent, desatPercent); + } + } + + setHeightScale(heightScale: number) { + this.use(); + if (this.unifHeightScale !== -1) { + gl.uniform1f(this.unifHeightScale, heightScale); + } + } + + setTimeScale(timeScale: number) { + this.use(); + if (this.unifTimeScale !== -1) { + gl.uniform1f(this.unifTimeScale, timeScale); + } + } + + setSandHeight(sandHeight: number) { + this.use(); + if (this.unifSandHeight !== -1) { + gl.uniform1f(this.unifSandHeight, sandHeight); + } + } + + setGrassHeight(grassHeight: number) { + this.use(); + if (this.unifGrassHeight !== -1) { + gl.uniform1f(this.unifGrassHeight, grassHeight); + } + } + + setStoneHeight(stoneHeight: number) { + this.use(); + if (this.unifStoneHeight !== -1) { + gl.uniform1f(this.unifStoneHeight, stoneHeight); + } + } + + setShader(Shader: number) { + this.use(); + if (this.unifShader !== -1) { + gl.uniform1i(this.unifShader, Shader); + } + } + + setCameraPos(cameraPos: vec3) { + this.use(); + if (this.unifCameraPos !== -1) { + gl.uniform3fv(this.unifCameraPos, cameraPos); + } + } + + draw(d: Drawable) { + this.use(); + + if (this.attrPos != -1 && d.bindPos()) { + gl.enableVertexAttribArray(this.attrPos); + gl.vertexAttribPointer(this.attrPos, 4, gl.FLOAT, false, 0, 0); + } + + if (this.attrNor != -1 && d.bindNor()) { + gl.enableVertexAttribArray(this.attrNor); + gl.vertexAttribPointer(this.attrNor, 4, gl.FLOAT, false, 0, 0); + } + + d.bindIdx(); + gl.drawElements(d.drawMode(), d.elemCount(), gl.UNSIGNED_INT, 0); + + if (this.attrPos != -1) gl.disableVertexAttribArray(this.attrPos); + if (this.attrNor != -1) gl.disableVertexAttribArray(this.attrNor); + } +}; + +export default ShaderProgram; diff --git a/src/shaders/custom-frag.glsl b/src/shaders/custom-frag.glsl new file mode 100644 index 00000000..99f59c3e --- /dev/null +++ b/src/shaders/custom-frag.glsl @@ -0,0 +1,86 @@ +#version 300 es + +// This is a fragment shader. If you've opened this file first, please +// open and read lambert.vert.glsl before reading on. +// Unlike the vertex shader, the fragment shader actually does compute +// the shading of geometry. For every pixel in your program's output +// screen, the fragment shader is run for every bit of geometry that +// particular pixel overlaps. By implicitly interpolating the position +// data passed into the fragment shader by the vertex shader, the fragment shader +// can compute what color to apply to its pixel based on things like vertex +// position, light position, and vertex color. +precision highp float; + +uniform vec4 u_Color; // The color with which to render this instance of geometry. +uniform float u_DesatPercent; +uniform int u_Shader; + +// These are the interpolated values out of the rasterizer, so you can't know +// their specific values without knowing the vertices that contributed to them +in vec4 fs_Nor; +in vec4 fs_ViewVec; +in vec4 fs_LightVec; +in vec4 fs_Col; +in vec4 fs_Pos; +in float fs_Biome; + +out vec4 out_Col; // This is the final output color that you will see on your + // screen for the pixel that is currently being processed. + +float bias(float b, float t) { + return (t/((((1.0/b)-2.0)*(1.0-t))+1.0)); +} + +float gain(float g, float t){ + if (t < 0.5){ + return bias(1.0-g, 2.0*t)/2.0; + } + else{ + return 1.0 - bias(1.0-g, 2.0-2.0*t)/2.0; + } +} + +void main() +{ + vec3 temp_Normal = normalize(cross(dFdx(fs_Pos.xyz), dFdy(fs_Pos.xyz))); + + float ocean_spec = 0.8; + float sand_spec = 0.05; + float grass_spec = 0.1; + float stone_spec = 0.2; + float snow_spec = 1.0; + + float Spec_Coeff; + if (fs_Biome == 1.0){ + Spec_Coeff = ocean_spec; + } + else if (fs_Biome == 2.0){ + Spec_Coeff = sand_spec; + } + else if (fs_Biome == 3.0){ + Spec_Coeff = grass_spec; + } + else if (fs_Biome == 4.0){ + Spec_Coeff = stone_spec; + } + else if (fs_Biome == 5.0){ + Spec_Coeff = snow_spec; + } + vec4 m_color = fs_Col; + m_color = mix(m_color, u_Color, gain(0.1, u_DesatPercent)); + + float lightIntensity; + float diffuseTerm = dot(normalize(temp_Normal), normalize(fs_LightVec.xyz)); + diffuseTerm = clamp(diffuseTerm, 0.0, 1.0); + float ambientTerm = 0.2; + lightIntensity = diffuseTerm + ambientTerm; + + if (u_Shader == 1){ + out_Col = vec4(m_color.rgb * lightIntensity, m_color.a); + } + else { + vec3 HalfVec = normalize(fs_ViewVec.xyz + fs_LightVec.xyz); + vec3 specularTerm = Spec_Coeff * vec3(pow(clamp(dot(temp_Normal, HalfVec), 0.0, 1.0), 32.0)) * vec3(1.0); + out_Col = vec4((m_color.rgb + specularTerm) * lightIntensity, 1.0); + } +} diff --git a/src/shaders/custom-vert.glsl b/src/shaders/custom-vert.glsl new file mode 100644 index 00000000..b93adae2 --- /dev/null +++ b/src/shaders/custom-vert.glsl @@ -0,0 +1,154 @@ +#version 300 es + +//This is a vertex shader. While it is called a "shader" due to outdated conventions, this file +//is used to apply matrix transformations to the arrays of vertex data passed to it. +//Since this code is run on your GPU, each vertex is transformed simultaneously. +//If it were run on your CPU, each vertex would have to be processed in a FOR loop, one at a time. +//This simultaneous transformation allows your program to run much faster, especially when rendering +//geometry with millions of vertices. + +uniform mat4 u_Model; // The matrix that defines the transformation of the + // object we're rendering. In this assignment, + // this will be the result of traversing your scene graph. + +uniform mat4 u_ModelInvTr; // The inverse transpose of the model matrix. + // This allows us to transform the object's normals properly + // if the object has been non-uniformly scaled. + +uniform mat4 u_ViewProj; // The matrix that defines the camera's transformation. + // We've written a static matrix for you to use for HW2, + // but in HW3 you'll have to generate one yourself + +uniform vec3 u_CameraPos; +uniform float u_Time; +uniform float u_heightScale; +uniform float u_timeScale; +uniform float u_sandHeight; +uniform float u_grassHeight; +uniform float u_stoneHeight; + +in vec4 vs_Pos; // The array of vertex positions passed to the shader + +in vec4 vs_Nor; // The array of vertex normals passed to the shader + +in vec4 vs_Col; // The array of vertex colors passed to the shader. + +out vec4 fs_Nor; // The array of normals that has been transformed by u_ModelInvTr. This is implicitly passed to the fragment shader. +out vec4 fs_LightVec; // The direction in which our virtual light lies, relative to each vertex. This is implicitly passed to the fragment shader. +out vec4 fs_Col; // The color of each vertex. This is implicitly passed to the fragment shader. +out vec4 fs_Pos; +out vec4 fs_ViewVec; +out float fs_Biome; + +const vec4 lightPos = vec4(5, 5, 3, 1); //The position of our virtual light, which is used to compute the shading of + //the geometry in the fragment shader. + +vec4 mod289(vec4 x){return x - floor(x * (1.0 / 289.0)) * 289.0;} +vec4 random(vec4 x){return mod289(((x * 34.0) + 1.0) * x);} + +// Refer to a simple noise function online +float noise(vec3 pos){ + vec3 i = floor(pos); + vec3 f = fract(pos); + f = f * f * (3.0 - 2.0 * f); + + vec4 a = i.xxyy + vec4(0.0, 1.0, 0.0, 1.0); + vec4 k1 = random(a.xyxy); + vec4 k2 = random(k1.xyxy + a.zzww); + vec4 b = k2 + i.zzzz; + vec4 k3 = random(b); + vec4 k4 = random(b + 1.0); + + vec4 o1 = fract(k3 * (1.0 / 41.0)); + vec4 o2 = fract(k4 * (1.0 / 41.0)); + vec4 o3 = o2 * f.z + o1 * (1.0 - f.z); + vec2 o4 = o3.yw * f.x + o3.xz * (1.0 - f.x); + + return o4.y * f.y + o4.x * (1.0 - f.y); +} + +float fbm(vec3 pos) { + float noiseOutput = 0.0; + float amplitude = 0.5; + for (int i = 0; i < 6; i++) { + noiseOutput += amplitude * noise(pos); + pos = 2.0 * pos + vec3(100); + amplitude *= 0.5; + } + return noiseOutput; +} + +float bias(float b, float t) { + return (t/((((1.0/b)-2.0)*(1.0-t))+1.0)); +} + +float gain(float g, float t){ + if (t < 0.5){ + return bias(1.0-g, 2.0*t)/2.0; + } + else{ + return 1.0 - bias(1.0-g, 2.0-2.0*t)/2.0; + } +} + +void main() +{ + fs_Col = vs_Col; // Pass the vertex colors to the fragment shader for interpolation + vec4 temp_vPos = vs_Pos; + float temp_time = u_timeScale * u_Time; + + float noiseOutput = clamp((2.0 * fbm(temp_vPos.xyz) - 1.0), 0.0, 1.0) * u_heightScale; + temp_vPos.xyz += vs_Nor.xyz * noiseOutput; + + // biomes height assign + float oceanHeight_low = 0.1; + float oceanHeight_high = 0.15; + float oceanHeight = mix(oceanHeight_low, oceanHeight_high, sin(temp_time)); + + vec4 oceanColor = vec4(0.0, 0.41, 0.58, clamp(bias(0.4, ((sin(temp_time)+1.0)/4.0)+0.5), 0.8, 1.0)); + vec4 sandColor = vec4(1.0, 0.93, 0.678, 1.0); + vec4 grassColor = vec4(0.494, 0.784, 0.314, 1.0); + vec4 stoneColor = vec4(0.533, 0.549, 0.553, 1.0); + vec4 snowColor = vec4(1.0, 0.98, 0.98, 1.0); + + if (noiseOutput <= oceanHeight){ + float oceanToSand = smoothstep(0.0, oceanHeight, noiseOutput); + fs_Col = mix(oceanColor, sandColor, oceanToSand); + fs_Biome = 1.0; + } + else if (noiseOutput <= u_sandHeight){ + float sandToGrass = smoothstep(oceanHeight, u_sandHeight, noiseOutput); + fs_Col = mix(sandColor, grassColor, sandToGrass); + fs_Biome = 2.0; + } + else if (noiseOutput <= u_grassHeight){ + float grassToStone = smoothstep(u_sandHeight, u_grassHeight, noiseOutput); + fs_Col = mix(grassColor, stoneColor, grassToStone); + fs_Biome = 3.0; + } + else if (noiseOutput <= u_stoneHeight){ + float stoneToSnow = smoothstep(u_grassHeight, u_stoneHeight, noiseOutput); + fs_Col = mix(stoneColor, snowColor, stoneToSnow); + fs_Biome = 4.0; + } + else { + fs_Biome = 5.0; + fs_Col = snowColor; + } + + mat3 invTranspose = mat3(u_ModelInvTr); + fs_Nor = vec4(invTranspose * vec3(vs_Nor), 0); // Pass the vertex normals to the fragment shader for interpolation. + // Transform the geometry's normals by the inverse transpose of the + // model matrix. This is necessary to ensure the normals remain + // perpendicular to the surface after the surface is transformed by + // the model matrix. + vec4 modelposition = u_Model * temp_vPos; + fs_Pos = modelposition; + + fs_LightVec = lightPos - modelposition; // Compute the direction in which the light source lies + + fs_ViewVec = vec4(mat3(inverse(u_Model)) * normalize(u_CameraPos - modelposition.xyz), length(u_CameraPos.xyz)); + + gl_Position = u_ViewProj * modelposition;// gl_Position is a built-in variable of OpenGL which is + // used to render the final positions of the geometry's vertices +} diff --git a/src/shaders/lambert-frag.glsl b/src/shaders/lambert-frag.glsl new file mode 100644 index 00000000..2b8e11b4 --- /dev/null +++ b/src/shaders/lambert-frag.glsl @@ -0,0 +1,43 @@ +#version 300 es + +// This is a fragment shader. If you've opened this file first, please +// open and read lambert.vert.glsl before reading on. +// Unlike the vertex shader, the fragment shader actually does compute +// the shading of geometry. For every pixel in your program's output +// screen, the fragment shader is run for every bit of geometry that +// particular pixel overlaps. By implicitly interpolating the position +// data passed into the fragment shader by the vertex shader, the fragment shader +// can compute what color to apply to its pixel based on things like vertex +// position, light position, and vertex color. +precision highp float; + +uniform vec4 u_Color; // The color with which to render this instance of geometry. + +// These are the interpolated values out of the rasterizer, so you can't know +// their specific values without knowing the vertices that contributed to them +in vec4 fs_Nor; +in vec4 fs_LightVec; +in vec4 fs_Col; + +out vec4 out_Col; // This is the final output color that you will see on your + // screen for the pixel that is currently being processed. + +void main() +{ + // Material base color (before shading) + vec4 diffuseColor = u_Color; + + // Calculate the diffuse term for Lambert shading + float diffuseTerm = dot(normalize(fs_Nor), normalize(fs_LightVec)); + // Avoid negative lighting values + // diffuseTerm = clamp(diffuseTerm, 0, 1); + + float ambientTerm = 0.2; + + float lightIntensity = diffuseTerm + ambientTerm; //Add a small float value to the color multiplier + //to simulate ambient lighting. This ensures that faces that are not + //lit by our point light are not completely black. + + // Compute final shaded color + out_Col = vec4(diffuseColor.rgb * lightIntensity, diffuseColor.a); +} diff --git a/src/shaders/lambert-vert.glsl b/src/shaders/lambert-vert.glsl new file mode 100644 index 00000000..7f95a374 --- /dev/null +++ b/src/shaders/lambert-vert.glsl @@ -0,0 +1,53 @@ +#version 300 es + +//This is a vertex shader. While it is called a "shader" due to outdated conventions, this file +//is used to apply matrix transformations to the arrays of vertex data passed to it. +//Since this code is run on your GPU, each vertex is transformed simultaneously. +//If it were run on your CPU, each vertex would have to be processed in a FOR loop, one at a time. +//This simultaneous transformation allows your program to run much faster, especially when rendering +//geometry with millions of vertices. + +uniform mat4 u_Model; // The matrix that defines the transformation of the + // object we're rendering. In this assignment, + // this will be the result of traversing your scene graph. + +uniform mat4 u_ModelInvTr; // The inverse transpose of the model matrix. + // This allows us to transform the object's normals properly + // if the object has been non-uniformly scaled. + +uniform mat4 u_ViewProj; // The matrix that defines the camera's transformation. + // We've written a static matrix for you to use for HW2, + // but in HW3 you'll have to generate one yourself + +in vec4 vs_Pos; // The array of vertex positions passed to the shader + +in vec4 vs_Nor; // The array of vertex normals passed to the shader + +in vec4 vs_Col; // The array of vertex colors passed to the shader. + +out vec4 fs_Nor; // The array of normals that has been transformed by u_ModelInvTr. This is implicitly passed to the fragment shader. +out vec4 fs_LightVec; // The direction in which our virtual light lies, relative to each vertex. This is implicitly passed to the fragment shader. +out vec4 fs_Col; // The color of each vertex. This is implicitly passed to the fragment shader. + +const vec4 lightPos = vec4(5, 5, 3, 1); //The position of our virtual light, which is used to compute the shading of + //the geometry in the fragment shader. + +void main() +{ + fs_Col = vs_Col; // Pass the vertex colors to the fragment shader for interpolation + + mat3 invTranspose = mat3(u_ModelInvTr); + fs_Nor = vec4(invTranspose * vec3(vs_Nor), 0); // Pass the vertex normals to the fragment shader for interpolation. + // Transform the geometry's normals by the inverse transpose of the + // model matrix. This is necessary to ensure the normals remain + // perpendicular to the surface after the surface is transformed by + // the model matrix. + + + vec4 modelposition = u_Model * vs_Pos; // Temporarily store the transformed vertex positions for use below + + fs_LightVec = lightPos - modelposition; // Compute the direction in which the light source lies + + gl_Position = u_ViewProj * modelposition;// gl_Position is a built-in variable of OpenGL which is + // used to render the final positions of the geometry's vertices +} diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 00000000..79efea76 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,11 @@ +{ + "compilerOptions": { + "outDir": "./dist", + "sourceMap": true, + "noImplicitAny": true, + "module": "es6", + "target": "es6", + "allowJs": true, + "moduleResolution": "node" + } +} diff --git a/webpack.config.js b/webpack.config.js new file mode 100644 index 00000000..2cce33bb --- /dev/null +++ b/webpack.config.js @@ -0,0 +1,37 @@ +const path = require('path'); + +module.exports = { + mode: process.env.NODE_ENV === 'production' ? 'production' : 'development', + entry: path.resolve(__dirname, "src/main"), + output: { + path: path.resolve(__dirname, "dist"), + filename: "bundle.js", + publicPath: '/', + }, + module: { + rules: [ + { + test: /\.ts$/, + use: 'ts-loader', + exclude: /node_modules/ + }, + { + test: /\.glsl$/, + loader: 'webpack-glsl-loader' + }, + ] + }, + resolve: { + extensions: ['.ts', '.js' ], + }, + devtool: 'source-map', + devServer: { + port: 5660, + static: { + directory: path.join(__dirname, 'dist'), + }, + client: { + overlay: true, + } + }, +};