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Real-Time 3D Graphics with WebGL 2

You're reading from   Real-Time 3D Graphics with WebGL 2 Build interactive 3D applications with JavaScript and WebGL 2 (OpenGL ES 3.0)

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Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781788629690
Length 500 pages
Edition 2nd Edition
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Authors (2):
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Farhad Ghayour Farhad Ghayour
Author Profile Icon Farhad Ghayour
Farhad Ghayour
Diego Cantor Diego Cantor
Author Profile Icon Diego Cantor
Diego Cantor
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Table of Contents (14) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Rendering 3. Lights 4. Cameras 5. Animations 6. Colors, Depth Testing, and Alpha Blending 7. Textures 8. Picking 9. Putting It All Together 10. Advanced Techniques 11. WebGL 2 Highlights 12. Journey Ahead 13. Other Books You May Enjoy

Implementing Unique Object Labels

We previously mentioned that picking based on the diffuse property could be difficult if two or more objects in the scene share the same diffuse color. If that were the case and you selected one of them, how could you determine which one is picked based on its color? In the following Time for Action section, we will implement unique object labels. The objects will be rendered in the offscreen framebuffer using these color labels instead of the diffuse colors. The scene will still be rendered on the screen using the non-unique diffuse colors.

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