OpenGL 4 Shading Language Cookbook（Second Edition）

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OpenGL 4 Shading Language Cookbook Second Edition

Credits

About the Author

About the Reviewers

www.PacktPub.com

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Chapter 1. Getting Started with GLSL

Introduction

Using a function loader to access the latest OpenGL functionality

Using GLM for mathematics

Determining the GLSL and OpenGL version

Compiling a shader

Linking a shader program

Sending data to a shader using vertex attributes and vertex buffer objects

Getting a list of active vertex input attributes and locations

Sending data to a shader using uniform variables

Getting a list of active uniform variables

Using uniform blocks and uniform buffer objects

Getting debug messages

Building a C++ shader program class

Chapter 2. The Basics of GLSL Shaders

Introduction

Implementing diffuse per-vertex shading with a single point light source

Implementing per-vertex ambient diffuse and specular (ADS) shading

Using functions in shaders

Implementing two-sided shading

Implementing flat shading

Using subroutines to select shader functionality

Discarding fragments to create a perforated look

Chapter 3. Lighting Shading and Optimization

Introduction

Shading with multiple positional lights

Shading with a directional light source

Using per-fragment shading for improved realism

Using the halfway vector for improved performance

Simulating a spotlight

Creating a cartoon shading effect

Simulating fog

Configuring the depth test

Chapter 4. Using Textures

Introduction

Applying a 2D texture

Applying multiple textures

Using alpha maps to discard pixels

Using normal maps

Simulating reflection with cube maps

Simulating refraction with cube maps

Applying a projected texture

Rendering to a texture

Using sampler objects

Chapter 5. Image Processing and Screen Space Techniques

Introduction

Applying an edge detection filter

Applying a Gaussian blur filter

Implementing HDR lighting with tone mapping

Creating a bloom effect

Using gamma correction to improve image quality

Using multisample anti-aliasing

Using deferred shading

Implementing order-independent transparency

Chapter 6. Using Geometry and Tessellation Shaders

Introduction

Point sprites with the geometry shader

Drawing a wireframe on top of a shaded mesh

Drawing silhouette lines using the geometry shader

Tessellating a curve

Tessellating a 2D quad

Tessellating a 3D surface

Tessellating based on depth

Chapter 7. Shadows

Introduction

Rendering shadows with shadow maps

Anti-aliasing shadow edges with PCF

Creating soft shadow edges with random sampling

Creating shadows using shadow volumes and the geometry shader

Chapter 8. Using Noise in Shaders

Introduction

Creating a noise texture using GLM

Creating a seamless noise texture

Creating a cloud-like effect

Creating a wood-grain effect

Creating a disintegration effect

Creating a paint-spatter effect

Creating a night-vision effect

Chapter 9. Particle Systems and Animation

Introduction

Animating a surface with vertex displacement

Creating a particle fountain

Creating a particle system using transform feedback

Creating a particle system using instanced particles

Simulating fire with particles

Simulating smoke with particles