GPU Gems : Programming Techniques, Tips and Tricks for Real-Time Graphics
by Fernando, Randima, (Series Editor)Edition: 1st
Format: Hardcover
Pub. Date: 2004-03-22
Publisher(s): Addison-Wesley Professional
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Summary
bull; Removes the mystery behind complex effects and reveals the full potential of programmable GPUs (graphics processing units) bull; Covers some of the coolest and most difficult effects, such as simulating fire, water, and waving blades of grass bull; Contains advice from experts from all the major graphics companies
Author Biography
Randima (Randy) Fernando is Manager of Developer Education at NVIDIA.
Table of Contents
| Foreword | |
| Preface | |
| Contributors | |
| Natural Effects | |
| Effective Water Simulation from Physical Models | |
| Goals and Scope | |
| The Sum of Sines Approximation | |
| Authoring | |
| Runtime Processing | |
| Conclusion | |
| References | |
| Rendering Water Caustics | |
| Introduction | |
| Computing Caustics | |
| Our Approach | |
| Implementation Using Open GL | |
| Implementation Using a High-Level Shading Language | |
| Conclusion | |
| References | |
| Skin in the "Dawn" Demo | |
| Introduction | |
| Skin Shading | |
| Lighting the Scene | |
| How Skin Responds to Light | |
| Implementation | |
| Conclusion | |
| References | |
| Animation in the "Dawn" Demo | |
| Introduction | |
| Mesh Animation | |
| Morph Targets | |
| Skinning | |
| Conclusion | |
| References | |
| Implementing Improved Perlin Noise | |
| The Noise Function | |
| The Original Implementation | |
| Deficiencies of the Original Implementation | |
| Improvements to Noise | |
| How to Make Good Fake Noise in Pixel Shaders | |
| Making Bumps Without Looking at Neighboring Vertices | |
| Conclusion | |
| References | |
| Fire in the "Vulcan" Demo | |
| Creating Realistic Flames | |
| Implementing Animated Sprites | |
| Particle Motion | |
| Performance | |
| Post-Rendering Effects | |
| Conclusion | |
| Rendering Countless Blades of Waving Grass | |
| Introduction | |
| Overview | |
| Preparation of the Grass Objects | |
| Animation | |
| Conclusion | |
| Further Reading | |
| Simulating Diffraction, Jos Stam, (Alias Systems).What Is Diffraction?Implementation | |
| Results | |
| Conclusion | |
| References | |
| Lighting and Shadows | |
| Efficient Shadow Volume Rendering | |
| Introduction | |
| Program Structure | |
| Detailed Discussion | |
| Debugging | |
| Geometry Optimizations | |
| Fill-Rate Optimizations | |
| Future Shadows | |
| References | |
| Cinematic Lighting | |
| Introduction | |
| A Direct Lighting Illumination Model | |
| The Uberlight Shader | |
| Performance Concerns | |
| Conclusion | |
| References | |
| Shadow Map Antialiasing | |
| Introduction | |
| Percentage-Closer Filtering | |
| A Brute-Force Implementation | |
| Using Fewer Samples | |
| Why It Works | |
| Conclusion | |
| References | |
| Omnidirectional Shadow Mapping | |
| Introduction | |
| The Shadow-Mapping Algorithm | |
| Implementation | |
| Adding Soft Shadows | |
| Conclusion | |
| References | |
| Generating Soft Shadows Using Occlusion Interval Maps | |
| The Gas Station | |
| The Algorithm | |
| Creating the Maps | |
| Rendering | |
| Limitati | |
| Table of Contents provided by Publisher. All Rights Reserved. |
Excerpts
This book is an extensive and practical collection of articles about real-time computer graphics, accumulating the knowledge and experience of experts in both industry and academia. Building, in the same style, upon the wealth of the great "Gems" books already available,GPU Gemsis a collection of short chapters. However, a number of key characteristics make this book unique and valuable to today's developers as they attempt to harness the ever-increasing power of the graphics processing unit (GPU). First and foremost, this book focuses squarely on real-time programmable graphics--specifically, on techniques relevant to GPUs. Each chapter was carefully selected to present ideas and techniques that are directly useful in interactive applications, such as computer games. The chapters provide insight and understanding, rather than focusing on low-level API calls or specific mathematical tricks. Furthermore, each chapter is packed with numerous full-color diagrams and images to illustrate and drive home key concepts. Finally, the experience and diversity of the contributors help readers gain a broad understanding, as well as a certain confidence that the advice they are getting comes from experts in the field. NVIDIA's strongest asset is its people: the depth and quality of their collective expertise inspired the initial idea forGPU Gems. With so much knowledge and expertise at hand, we felt that the thoughts and insights of the teams that brought us many recent advances in real-time graphics would make for a wonderfully instructive book. So, we started the project with an internal call for participation. Having the good fortune to work with people from leading game development houses, tool developers, film studios, and academic institutions who are shaping the future of real-time computer graphics, we also wanted to highlight their real-world contributions inGPU Gems.Hence, a wider, public call for participation allowed us to coalesce a great amount of talent and refreshing perspective into this volume. Whether you're creating new effects, architecting a graphics engine, or squeezing out the last bits of performance, we hope that this book provides valuable guidance and saves you from some of the challenges the authors faced on their own projects. All of us who worked onGPU Gemshope that it will help you to adopt new ideas and take your projects to the next level of graphical realism. Our Intended Audience This book provides intermediate and advanced readers with useful information that will help them in their projects. Focusing beyond the fundamentals of high-level shading,GPU Gemslooks at how to take existing projects further by removing the mystery behind complex effects and advanced GPU programming. With the rapid evolution of real-time shading languages, the collection of algorithms available to real-time graphics developers is larger than ever. By compiling and distributing the information in this book, our goal is to make high-quality, high-performance graphics more accessible to a wider audience that includes game developers, technical directors, professors, and students. Trying the Examples Many of the chapters in this book include code samples to make their subject matter more concrete. The authors used whichever shading language they wanted, so the code samples ended up in DirectX 9's High-Level Shader Language (HLSL) or Cg, which were the only two high-level shading languages widely in use during this project. Almost everything that is presented can be applied to either language, as well as to languages that came later, such as the OpenGL Shading Language. The code samples are available on the CD that accompanies this book, along with standalone examples wherever possible. This makes it easy for you to integrate or experiment with the various examples. Updated sample code, as well as additional supplementary materials, is a
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