OpenGL 4.0 Shading Language Cookbook (Paperback)

Over 60 highly focused, practical recipes to maximize your OpenGL Shading language use

• A full set of recipes demonstrating simple and advanced techniques for producing high-quality, real-time 3D graphics using GLSL 4.0
• How to use the OpenGL Shading Language to implement lighting and shading techniques
• Use the new features of GLSL 4.0 including tessellation and geometry shaders
• How to use textures in GLSL as part of a wide variety of techniques from basic texture mapping to deferred shading
• Simple, easy-to-follow examples with GLSL source code, as well as a basic description of the theory behind each technique

In Detail

The OpenGL Shading Language (GLSL) is a programming language used for customizing parts of the OpenGL graphics pipeline that were formerly fixed-function, and are executed directly on the GPU. It provides programmers with unprecedented flexibility for implementing effects and optimizations utilizing the power of modern GPUs. With version 4.0, the language has been further refined to provide programmers with greater flexibility, and additional features have been added such as an entirely new stage called the tessellation shader.

The OpenGL Shading Language 4.0 Cookbook provides easy-to-follow examples that first walk you through the theory and background behind each technique then go on to provide and explain the GLSL and OpenGL code needed to implement it. Beginning level through to advanced techniques are presented including topics such as texturing, screen-space techniques, lighting, shading, tessellation shaders, geometry shaders, and shadows.

The OpenGL Shading Language 4.0 Cookbook is a practical guide that takes you from the basics of programming with GLSL 4.0 and OpenGL 4.0, through basic lighting and shading techniques, to more advanced techniques and effects. It presents techniques for producing basic lighting and shading effects; examples that demonstrate how to make use of textures for a wide variety of effects and as part of other techniques; examples of screen-space techniques, shadowing, tessellation and geometry shaders, noise, and animation.

The OpenGL Shading Language 4.0 Cookbook provides examples of modern shading techniques that can be used as a starting point for programmers to expand upon to produce modern, interactive, 3D computer graphics applications.

What you will learn from this book

• Compile, install, and communicate with shader programs
• Use new features of GLSL 4.0 such as subroutines and uniform blocks
• Implement basic lighting and shading techniques such as diffuse and specular shading, per-fragment shading, and spotlights
• Apply single or multiple textures
• Use textures as environment maps for simulating reflection or refraction
• Implement screen-space techniques such as gamma correction, blur filters, and deferred shading
• Implement geometry and tessellation shaders
• Learn shadowing techniques including shadow mapping and screen space ambient occlusion
• Use noise in shaders
• Use shaders for animation

Approach

This hands-on guide cuts short the preamble and gets straight to the point – actually creating graphics, instead of just theoretical learning. Each recipe is specifically tailored to satisfy your appetite for producing real-time 3-D graphics using GLSL 4.0.

Who this book is written for

If you are an OpenGL programmer looking to use the modern features of GLSL 4.0 to create real-time, three-dimensional graphics, then this book is for you. Familiarity with OpenGL programming, along with the typical 3D coordinate systems, projections, and transformations is assumed. It can also be useful for experienced GLSL programmers who are looking to implement the techniques that are presented here.

超過60個高度專注、實用的食譜，以最大化您對OpenGL Shading Language的使用。

• 一整套食譜，展示使用GLSL 4.0製作高品質實時3D圖形的簡單和高級技術


• 如何使用OpenGL Shading Language實現照明和著色技術


• 使用GLSL 4.0的新功能，包括曲面細分和幾何著色器


• 如何在GLSL中使用紋理，包括從基本紋理映射到延遲著色的各種技術


• 簡單易懂的示例，包括GLSL源代碼，以及每種技術背後的基本描述

詳細內容

OpenGL Shading Language（GLSL）是一種用於自定義OpenGL圖形管道的編程語言，以前是固定功能，直接在GPU上執行。它為程序員提供了前所未有的靈活性，以利用現代GPU的強大功能來實現效果和優化。在4.0版本中，該語言進一步完善，為程序員提供了更大的靈活性，並添加了全新的曲面細分著色器階段。

《OpenGL Shading Language 4.0 Cookbook》提供易於理解的示例，首先介紹每種技術的理論和背景，然後提供並解釋實現它所需的GLSL和OpenGL代碼。從初級到高級技術，包括紋理、屏幕空間技術、照明、著色、曲面細分著色器、幾何著色器和陰影等主題。

《OpenGL Shading Language 4.0 Cookbook》是一本實用指南，從GLSL 4.0和OpenGL 4.0的基礎開始，介紹基本照明和著色技術，然後深入介紹更高級的技術和效果。它介紹了基本照明和著色效果的技術；示例演示如何在各種效果和其他技術中使用紋理；屏幕空間技術、陰影、曲面細分和幾何著色器、噪音和動畫等示例。

《OpenGL Shading Language 4.0 Cookbook》提供了現代著色技術的示例，可作為程序員開始製作現代、互動式3D計算機圖形應用程序的起點。

本書的學習目標

• 編譯、安裝和與著色器程序通信


• 使用GLSL 4.0的新功能，如子程序和統一塊


• 實現基本照明和著色技術，如漫反射和鏡面著色、片段著色和聚光燈


• 應用單個或多個紋理


• 將紋理用作模擬反射或折射的環境映射


• 實現屏幕空間技術，如伽馬校正、模糊濾鏡和延遲著色


• 實現幾何和曲面細分著色器


• 學習陰影技術，包括陰影映射和屏幕空間環境遮蔽


• 在著色器中使用噪音


• 使用著色器進行動畫

本書的特點

這本實用指南直接創建圖形，而不僅僅是理論學習。每個食譜都專門為使用GLSL 4.0創建實時3D圖形而設計。

本書適合對象

如果您是一名OpenGL程序員，希望使用GLSL 4.0的現代功能創建實時的三維圖形，那麼這本書適合您。我們假設您熟悉OpenGL編程，以及典型的三維坐標系統、投影和變換。對於有經驗的GLSL程序員來說，本書也可以作為實現技術的參考。