OpenGL 4.0 Shading Language Cookbook by Wolff, David -- Read -- Imperial Library of Trantor

Index

OpenGL 4.0 Shading Language Cookbook

Table of Contents OpenGL 4.0 Shading Language Cookbook 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

Downloading the example code for this book Errata Piracy Questions

1. Getting Started with GLSL 4.0

Introduction

The OpenGL Shading Language Profiles: Core vs. Compatibility

Using the GLEW Library to access the latest OpenGL functionality

Getting ready How to do it... How it works... There's more...

GLEW visualinfo GLEW glewinfo Checking for extension availability at runtime

See also

Using the GLM library for mathematics

Getting ready How to do it... How it works... There's more...

Using the GLM types as input to OpenGL

See also

Determining the GLSL and OpenGL version

How to do it... How it works... There's more... See also

Compiling a shader

Getting ready How to do it... How it works... There's more...

Deleting a shader object

See also

Linking a shader program

Getting ready How to do it... How it works... There's more...

Deleting a shader program

See also

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

Getting ready How to do it... How it works... There's more...

Using layout qualifiers Using element arrays Interleaved arrays

See also

Getting a list of active vertex input attributes and indices

Getting ready How to do it... How it works... There's more... See also

Sending data to a shader using uniform variables

Getting ready How to do it... How it works... There's more... See also

Getting a list of active uniform variables

Getting ready How to do it... How it works... There's more... See also

Using uniform blocks and uniform buffer objects

Getting ready How to do it... How it works... There's more...

Using an instance name with a uniform block Using layout qualifiers with uniform blocks

See also

Building a C++ shader program class

Getting ready How to do it... How it works... See also

2. The Basics of GLSL Shaders

Introduction

Vertex and fragment shaders Replicating the old fixed functionality

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

Getting ready How to do it... How it works... There's more... See also

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

Getting ready How to do it... How it works... There's more...

Using a non-local viewer Per-vertex vs. Per-fragment Directional lights Light attenuation with distance

See also

Using functions in shaders

Getting ready How to do it... How it works... There's more...

The const qualifier Function overloading Passing arrays or structures to a function

See also

Implementing two-sided shading

Getting ready How to do it... How it works... There's more...

Using two-sided rendering for debugging

See also

Implementing flat shading

How to do it... How it works... See also

Using subroutines to select shader functionality

Getting ready How to do it... How it works... There's more... See also

Discarding fragments to create a perforated look

Getting ready How to do it... How it works... See also

3. Lighting, Shading Effects, and Optimizations

Introduction Shading with multiple positional lights

Getting ready How to do it... How it works... See also

Shading with a directional light source

Getting ready How to do it... How it works... There's more... See also

Using per-fragment shading for improved realism

Getting ready How to do it... How it works... There's more... See also

Using the halfway vector for improved performance

Getting ready How to do it... How it works... There's more... See also

Simulating a spotlight

Getting ready How to do it... How it works... See also

Creating a cartoon shading effect

Getting ready How to do it... How it works... There's more... See also

Simulating fog

Getting ready How to do it... How it works... There's more...

Computing distance from the eye

See also

4. Using Textures

Introduction Applying a 2D texture

Getting ready How to do it... How it works... There's more... See also

Applying multiple textures

Getting ready How to do it... How it works... There's more... See also

Using alpha maps to discard pixels

Getting ready How to do it... How it works... There's more... See also

Using normal maps

Getting ready How to do it... How it works... See also

Simulating reflection with cube maps

Getting ready How to do it... How it works... There's more... See also

Simulating refraction with cube maps

Getting ready How to do it... How it works... There's more...

The Fresnel equations Chromatic aberration Both sides of the object?

See also

Image-based lighting

Getting ready How to do it... How it works... There's more... See also

Applying a projected texture

Getting ready How to do it... How it works... There's more... See also

Rendering to a texture

Getting ready How to do it... How it works... There's more... See also

5. Image Processing and Screen Space Techniques

Introduction Applying an edge detection filter

Getting ready How to do it... How it works... There's more...

Optimization techniques

See also

Applying a Gaussian blur filter

Getting ready How to do it... How it works... There's more... See also

Creating a "bloom" effect

Getting ready How to do it... How it works... There's more...

Using low-res textures

See also

Using gamma correction to improve image quality

How to do it... How it works... There's more...

Using multisample anti-aliasing

Getting ready How to do it... How it works... There's more...

Using deferred shading

Getting ready How to do it... How it works... There's more... See also

6. Using Geometry and Tessellation Shaders

Introduction

The shader pipeline extended The geometry shader The tessellation shaders

Point sprites with the geometry shader

Getting ready How to do it... How it works... There's more...

Drawing a wireframe on top of a shaded mesh

Getting ready How to do it... How it works... There's more... See also

Drawing silhouette lines using the geometry shader

Getting ready How to do it... How it works... There's more... See also

Tessellating a curve

Getting ready How to do it... How it works... There's more...

Tessellating a 2D quad

Getting ready How to do it... How it works... See also

Tessellating a 3D surface

Getting ready How to do it... How it works... See also

Tessellating based on depth

Getting ready How to do it... How it works... There's more... See also

7. Shadows

Introduction Rendering shadows with shadow maps

Getting ready How to do it... How it works... There's more...

Aliasing Rendering back faces only for the shadow map

See also

Anti-aliasing shadow edges with PCF

Getting ready How to do it... How it works... There's more... See also

Creating soft shadow edges with random sampling

Getting ready How to do it... How it works... There's more... See also

Improving realism with prebaked ambient occlusion

Getting ready How to do it... How it works... There's more...

Screen-space ambient occlusion Another technique for dynamic ambient occlusion

8. Using Noise in Shaders

Introduction Creating a noise texture using libnoise

Getting ready How to do it... How it works... There's more... See also

Creating a seamless noise texture

Getting ready How to do it... How it works... There's more... See also

Creating a cloud-like effect

Getting ready How to do it... How it works... There's more... See also

Creating a wood grain effect

Getting ready How to do it... How it works... There's more... See also

Creating a disintegration effect

Getting ready How to do it... How it works... See also

Creating a paint-spatter effect

Getting ready How to do it... How it works... There's more... See also

Creating a night-vision effect

Getting ready How to do it... How it works... There's more... See also

9. Animation and Particles

Introduction Animating a surface with vertex displacement

Getting ready How to do it... How it works... There's more... See also

Creating a particle fountain

Getting ready How to do it... How it works... There's more... See also

Creating a particle system using transform feedback

Getting ready How to do it... How it works... There's more...

Querying transform feedback results Recycling particles

See also

Creating a particle system using instanced particles

Getting ready How to do it... How it works... There's more... See also

Simulating fire with particles

Getting ready How to do it... How it works... There's more... See also

Simulating smoke with particles

Getting ready How to do it... How it works... See also

Index

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