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)

Optimization Strategies

If you play around a little bit and increase the value of the ballsCount global constant from 50 to 500, you will start to notice that the frame rate degrades:

In the preceding screenshot, the rendering hovered roughly around 30 frames per second. Depending on your computer, the average time for the draw function can be higher than the frequency at which the animation timer callback is invoked. This will result in dropped frames. To correct this, we need to make the draw function faster. Let's see a couple of strategies to do this.

Optimizing Batch Performance

WebGL 2 adds some interesting features, such as geometry-instancing. This feature allows us to render the same instance of a single mesh...