Build Your Own 2D Game Engine and Create Great Web Games: Using HTML5, JavaScript, and WebGL

CHAPTER 8

Implementing Illumination and Shadow

After completing this chapter, you will be able to:

• Understand the parameters of simple illumination models
• Define infrastructure supports for working with multiple light sources
• Understand the basics of diffuse reflection and normal mapping
• Understand the basics of specular reflection and the Phong illumination model
• Implement GLSL shaders to simulate diffuse and specular reflection and the Phong illumination model
• Create and manipulate point, directional, and spotlights
• Simulate shadows with the WebGL stencil buffer

Introduction

Up to now in your game engine you have implemented mostly functional ...