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OpenGL 4 Shading Language Cookbook

You're reading from   OpenGL 4 Shading Language Cookbook Build high-quality, real-time 3D graphics with OpenGL 4.6, GLSL 4.6 and C++17

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781789342253
Length 472 pages
Edition 3rd Edition
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Authors (2):
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David A Wolff David A Wolff
Author Profile Icon David A Wolff
David A Wolff
David Wolff David Wolff
Author Profile Icon David Wolff
David Wolff
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Table of Contents (13) Chapters Close

Preface 1. Getting Started with GLSL FREE CHAPTER 2. Working with GLSL Programs 3. The Basics of GLSL Shaders 4. Lighting and Shading 5. Using Textures 6. Image Processing and Screen Space Techniques 7. Using Geometry and Tessellation Shaders 8. Shadows 9. Using Noise in Shaders 10. Particle Systems and Animation 11. Using Compute Shaders 12. Other Books You May Enjoy

Using the compute shader for cloth simulation

The compute shader is well-suited for harnessing the GPU for physical simulation. Cloth simulation is a prime example. In this recipe, we'll implement a simple particle-spring-based cloth simulation using the compute shader. The following is an image of the simulation of a cloth hanging by five pins (you'll have to imagine it animating):

A common way to represent cloth is with a particle-spring lattice. The cloth is composed of a 2D grid of point masses, each connected to its eight neighboring masses with idealized springs. The following diagram represents one of the point masses (center) connected to its neighboring masses. The lines represent the springs. The dark lines are the horizontal/vertical springs and the dashed lines are the diagonal springs:

The total force on a particle is the sum of the forces produced by...

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