Book Image

Real-Time 3D Graphics with WebGL 2 - Second Edition

By : Farhad Ghayour, Diego Cantor
5 (1)
Book Image

Real-Time 3D Graphics with WebGL 2 - Second Edition

5 (1)
By: Farhad Ghayour, Diego Cantor

Overview of this book

As highly interactive applications have become an increasingly important part of the user experience, WebGL is a unique and cutting-edge technology that brings hardware-accelerated 3D graphics to the web. Packed with 80+ examples, this book guides readers through the landscape of real-time computer graphics using WebGL 2. Each chapter covers foundational concepts in 3D graphics programming with various implementations. Topics are always associated with exercises for a hands-on approach to learning. This book presents a clear roadmap to learning real-time 3D computer graphics with WebGL 2. Each chapter starts with a summary of the learning goals for the chapter, followed by a detailed description of each topic. The book offers example-rich, up-to-date introductions to a wide range of essential 3D computer graphics topics, including rendering, colors, textures, transformations, framebuffers, lights, surfaces, blending, geometry construction, advanced techniques, and more. With each chapter, you will "level up" your 3D graphics programming skills. This book will become your trustworthy companion in developing highly interactive 3D web applications with WebGL and JavaScript.
Table of Contents (14 chapters)

Time for Action: Texturing the Cube

Let's cover an example where we add a texture map to a cube:

  1. Open the ch07_01_textured-cube.html file in your editor. If you open it in a browser, you should see a scene that looks like the following screenshot:
  1. Let's load the texture image. At the top of the script block, add a new variable to hold the texture:
let texture;
  1. At the bottom of the configure function, add the following code, which creates the texture object, loads an image, and sets the image as the texture data. In this case, we'll use a PNG image with the WebGL logo as our texture:
texture = gl.createTexture();

const image = new Image();

image.src = '/common/images/webgl.png';

image.onload = () => {
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA,
gl.UNSIGNED_BYTE, image);
gl.texParameteri(gl.TEXTURE_2D...