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WebGL Beginner's Guide

You're reading from   WebGL Beginner's Guide If you're a JavaScript developer who wants to take the plunge into 3D web development, this is the perfect primer. From a basic understanding of WebGL structure to creating realistic 3D scenes, everything you need is here.

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Product type Paperback
Published in Jun 2012
Publisher Packt
ISBN-13 9781849691727
Length 376 pages
Edition 1st Edition
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Table of Contents (18) Chapters Close

WebGL Beginner's Guide
Credits
About the Authors
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
1. Getting Started with WebGL FREE CHAPTER 2. Rendering Geometry 3. Lights! 4. Camera 5. Action 6. Colors, Depth Testing, and Alpha Blending 7. Textures 8. Picking 9. Putting It All Together 10. Advanced Techniques Index

Summary


In this chapter, we have discussed how WebGL renders geometry. Remember that there are two kinds of WebGL buffers that deal with geometry rendering: VBOs and IBOs.

WebGL's rendering pipeline describes how the WebGL buffers are used and passed in the form of attributes to be processed by the vertex shader. The vertex shader parallelizes vertex processing in the GPU. Vertices define the surface of the geometry that is going to be rendered. Every element on this surface is known as a fragment. These fragments are processed by the fragment shader. Fragment processing also occurs in parallel in the GPU. When all the fragments have been processed, the framebuffer, a two-dimensional array, contains the image that is then displayed on your screen.

WebGL works as a state machine. As such, properties referring to buffers are available and their values will be dependent on the buffer currently bound.

We also saw that JSON and AJAX are two JavaScript technologies that integrate really well with...

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