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WebGL Beginner's Guide

WebGL Beginner's Guide

4.2 (9)
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WebGL Beginner's Guide

WebGL Beginner's Guide

4.2 (9)

Overview of this book

WebGL is a new web technology that brings hardware-accelerated 3D graphics to the browser without installing additional software. As WebGL is based on OpenGL and brings in a new concept of 3D graphics programming to web development, it may seem unfamiliar to even experienced Web developers.Packed with many examples, this book shows how WebGL can be easy to learn despite its unfriendly appearance. Each chapter addresses one of the important aspects of 3D graphics programming and presents different alternatives for its implementation. The topics are always associated with exercises that will allow the reader to put the concepts to the test in an immediate manner.WebGL Beginner's Guide presents a clear road map to learning WebGL. 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 WebGL topics, including drawing, color, texture, transformations, framebuffers, light, surfaces, geometry, and more. With each chapter, you will "level up"ù your 3D graphics programming skills. This book will become your trustworthy companion filled with the information required to develop cool-looking 3D web applications with WebGL and JavaScript.
Table of Contents (18 chapters)
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WebGL Beginner's Guide
Credits
About the Authors
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
1
Index

Chapter 2. Rendering Geometry

WebGL renders objects following a "divide and conquer" approach. Complex polygons are decomposed into triangles, lines, and point primitives. Then, each geometric primitive is processed in parallel by the GPU through a series of steps, known as the rendering pipeline, in order to create the final scene that is displayed on the canvas.

The first step to use the rendering pipeline is to define geometric entities. In this chapter, we will take a look at how geometric entities are defined in WebGL.

In this chapter, we will:

  • Understand how WebGL defines and processes geometric information

  • Discuss the relevant API methods that relate to geometry manipulation

  • Examine why and how to use JavaScript Object Notation (JSON) to define, store, and load complex geometries

  • Continue our analysis of WebGL as a state machine and describe the attributes relevant to geometry manipulation that can be set and retrieved from the state machine

  • Experiment with creating and loading different...

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Tech Concepts
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Programming languages
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WebGL Beginner's Guide
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