Table of Contents: Ray Tracing Gems :

Ray Tracing Gems : High-Quality and Real-Time Rendering with DXR and Other APIs.

Bibliographic Details
Main Author:	Haines, Eric.
Other Authors:	Akenine-Möller, Tomas.
Format:	eBook
Language:	English
Published:	Berkeley, CA : Apress L. P., 2019.
Edition:	1st ed.
Subjects:	Electronic books.
Online Access:	Click to View

Table of Contents:

Intro
Table of Contents
Preface
Foreword
Contributors
Notation
Part I: Ray Tracing Basics
Chapter 1: Ray Tracing Terminology
1.1 Historical Notes
1.2 Definitions
Chapter 2: What is a Ray?
2.1 Mathematical Description of a Ray
2.2 Ray Intervals
2.3 Rays in DXR
2.4 Conclusion
Chapter 3: Introduction to DirectX Raytracing
3.1 Introduction
3.2 Overview
3.3 Getting Started
3.4 The DirectX Raytracing Pipeline
3.5 New HLSL Support for DirectX Raytracing
3.5.1 Launching a New Ray in HLSL
3.5.2 Controlling Ray Traversal in HLSL
3.5.3 Additional HLSL Intrinsics
3.6 A Simple HLSL Ray Tracing Example
3.7 Overview of Host Initialization for DirectX Raytracing
3.7.1 Insight into the Mental Model
3.8 Basic DXR Initialization and Setup
3.8.1 Geometry and Acceleration Structures
3.8.1.1 Bottom-Level Acceleration Structure
3.8.1.2 Top-Level Acceleration Structure
3.8.2 Root Signatures
3.8.3 Shader Compilation
3.9 Ray Tracing Pipeline State Objects
3.10 Shader Tables
3.11 Dispatching Rays
3.12 Digging Deeper and Additional Resources
3.13 Conclusion
Chapter 4: A Planetarium Dome Master Camera
4.1 Introduction
4.2 Methods
4.2.1 Computing Ray Directions from Viewport Coordinates
4.2.2 Circular Stereoscopic Projection
4.2.3 Depth of Field
4.2.4 Antialiasing
4.3 Planetarium Dome Master Projection Sample Code
Chapter 5: Computing Minima and Maxima of Subarrays
5.1 Motivation
5.2 Naive Full Table Lookup
5.3 The Sparse Table Method
5.4 The (Recursive) Range Tree Method
5.5 Iterative Range Tree Queries
5.6 Results
5.7 Summary
Part II: Intersections and Efficiency
Chapter 6: A Fast and Robust Method for Avoiding Self-Intersection
6.1 Introduction
6.2 Method.
6.2.1 Calculating the Intersection Point on the Surface
6.2.2 Avoiding Self-Intersection
6.2.2.1 Exclusion Using the Primitive Identifier
6.2.2.2 Limiting the Ray Interval
6.2.2.3 Offsetting Along the Shading Normal or the Old Ray Direction
6.2.2.4 Adaptive Offsetting Along the Geometric Normal
6.3 Conclusion
Chapter 7: Precision Improvements for Ray/Sphere Intersection
7.1 Basic Ray/Sphere Intersection
7.2 Floating-Point Precision Considerations
7.3 Related Resources
Chapter 8: Cool Patches: A Geometric Approach to Ray/Bilinear Patch Intersections
8.1 Introduction and Prior Art
8.1.1 Performance Measurements
8.1.2 Mesh Quadrangulation
8.2 GARP Details
8.3 Discussion of Results
8.4 Code
Chapter 9: Multi-Hit Ray Tracing in DXR
9.1 Introduction
9.2 Implementation
9.2.1 Naive Multi-Hit Traversal
9.2.2 Node-Culling Multi-Hit BVH Traversal
9.3 Results
9.3.1 Performance Measurements
9.3.1.1 Find First Intersection
9.3.1.2 Find All Intersections
9.3.1.3 Find Some Intersections
9.3.2 Discussion
9.4 Conclusions
Chapter 10: A Simple Load-Balancing Scheme with High Scaling Efficiency
10.1 Introduction
10.2 Requirements
10.3 Load Balancing
10.3.1 Naive Tiling
10.3.2 Task Size
10.3.3 Task Distribution
10.3.4 Image Assembly
10.4 Results
Part III: Reflections, Refractions, and Shadows
Chapter 11: Automatic Handling of Materials in Nested Volumes
11.1 Modeling Volumes
11.1.1 Unique Borders
11.1.2 Additional Air Gap
11.1.3 Overlapping Hulls
11.2 Algorithm
11.2.1 Implementation
11.3 Limitations
Chapter 12: A Microfacet-Based Shadowing Function to Solve the Bump Terminator Problem
12.1 Introduction
12.2 Previous Work
12.3 Method
12.3.1 The Normal Distribution.
12.3.2 The Shadowing Function
12.4 Results
Chapter 13: Ray Traced Shadows: Maintaining Real-Time Frame Rates
13.1 Introduction
13.2 Related Work
13.3 Ray Traced Shadows
13.4 Adaptive Sampling
13.4.1 Temporal Reprojection
13.4.2 Identifying Penumbra Regions
13.4.3 Computing the Number of Samples
13.4.4 Sampling Mask
13.4.5 Computing Visibility Values
13.4.5.1 Temporal Filtering
13.4.5.2 Spatial Filtering
13.5 Implementation
13.5.1 Sample-Set Generation
13.5.2 Distance-Based Light Culling
13.5.3 Limiting the Total Sample Count
13.5.4 Forward Rendering Pipeline Integration
13.6 Results
13.6.1 Comparison with Shadow Mapping
13.6.2 Soft Shadows versus Hard Shadows
13.6.3 Limitations
13.7 Conclusion and Future Work
13.7.1 Future Work
Chapter 14: Ray-Guided Volumetric Water Caustics in Single Scattering Media with DXR
14.1 Introduction
14.2 Volumetric Lighting and Refracted Light
14.3 Algorithm
14.3.1 Compute Beam Compression Ratios
14.3.2 Render Caustics Map
14.3.3 Ray Trace Refracted Caustics Map and Accumulate Surface Caustics
14.3.4 Adaptively Tessellate the Triangles of the Water Surface
14.3.5 Build Triangular Beam Volumes
14.3.6 Render Volumetric Caustics Using Additive Blending
14.3.7 Combine Surface Caustics and Volumetric Caustics
14.4 Implementation Details
14.5 Results
14.6 Future Work
14.7 Demo
Part IV: Sampling
Chapter 15: On the Importance of Sampling
15.1 Introduction
15.2 Example: Ambient Occlusion
15.3 Understanding Variance
15.4 Direct Illumination
15.5 Conclusion
Chapter 16: Sampling Transformations Zoo
16.1 The Mechanics of Sampling
16.2 Introduction to Distributions
16.3 One-Dimensional Distributions
16.3.1 Linear
16.3.2 Tent.
16.3.3 Normal Distribution
16.3.4 Sampling from a One-Dimensional Discrete Distribution
16.3.4.1 Just Once
16.3.4.2 Multiple Times
16.4 Two-Dimensional Distributions
16.4.1 Bilinear
16.4.2 A Distribution Given a Two-Dimensional Texture
16.4.2.1 Rejection Sampling
16.4.2.2 Multi-Dimensional Inversion Method
16.4.2.3 Hierarchical Transformation
16.5 Uniformly Sampling Surfaces
16.5.1 Disk
16.5.1.1 Polar Mapping
16.5.1.2 Concentric Mapping
16.5.2 Triangle
16.5.2.1 Warping
16.5.2.2 Flipping
16.5.3 Triangle Mesh
16.5.4 Sphere
16.5.4.1 Latitude-Longitude Mapping
16.5.4.2 Octahedral Concentric (Uniform) Map
16.6 Sampling Directions
16.6.1 Cosine-Weighted Hemisphere Oriented to the z-Axis
16.6.2 Cosine-Weighted Hemisphere Oriented to a Vector
16.6.3 Directions in a Cone
16.6.4 Phong Distribution
16.6.5 GGX Distribution
16.7 Volume Scattering
16.7.1 Distances in a Volume
16.7.1.1 Homogeneous Media
16.7.1.2 Inhomogeneous Media
16.7.2 Henyey-Greenstein Phase Function
16.8 Adding to the Zoo Collection
Chapter 17: Ignoring the Inconvenient When Tracing Rays
17.1 Introduction
17.2 Motivation
17.3 Clamping
17.4 Path Regularization
17.5 Conclusion
Chapter 18: Importance Sampling of Many Lights on the GPU
18.1 Introduction
18.2 Review of Previous Algorithms
18.2.1 Real-Time Light Culling
18.2.2 Many-Light Algorithms
18.2.3 Light Importance Sampling
18.3 Foundations
18.3.1 Lighting Integrals
18.3.2 Importance Sampling
18.3.2.1 Monte Carlo Method
18.3.2.2 Light Selection Importance Sampling
18.3.2.3 Light Source Sampling
18.3.3 Ray Tracing of Lights
18.4 Algorithm
18.4.1 Light Preprocessing
18.4.2 Acceleration Structure
18.4.2.1 Building the BVH.
18.4.2.2 Light Orientation Cone
18.4.2.3 Defining the Split Plane
18.4.3 Light Importance Sampling
18.4.3.1 Probabilistic BVH Traversal
18.4.3.2 Random Number Usage
18.4.3.3 Sampling the Leaf Node
18.4.3.4 Sampling the Light Source
18.5 Results
18.5.1 Performance
18.5.1.1 Acceleration Structure Construction
18.5.1.2 Render Time per Frame
18.5.2 Image Quality
18.5.2.1 Build Options
18.5.2.2 Triangle Amount per Leaf Node
18.5.2.3 Sampling Methods
18.6 Conclusion
Part V: Denoising and Filtering
Chapter 19: Cinematic Rendering in UE4 with Real-Time Ray Tracing and Denoising
19.1 Introduction
19.2 Integrating Ray Tracing in Unreal Engine 4
19.2.1 Phase 1: Experimental Integration
19.2.1.1 DirectX Raytracing Background on Acceleration Structures
19.2.1.2 Experimental Extensions to the UE4 RHI
19.2.1.3 Registering Geometry for a Variety of Engine Primitives
19.2.1.4 Updating the Ray Tracing Representation of the Scene
19.2.1.5 Iterating over All Objects
19.2.1.6 Customizing Shaders for Ray Traced Rendering
19.2.1.7 Batch Commit of Shader Parameters of Multiple Ray Types
19.2.1.8 Updating Instance Transformation
19.2.1.9 Building Acceleration Structures
19.2.1.10 Miss Shaders
19.2.2 Phase 2
19.2.2.1 Tier 1
19.2.2.2 Tier 2
19.2.2.3 Tier 3
19.3 Real-Time Ray Tracing and Denoising
19.3.1 Ray Traced Shadows
19.3.1.1 Lighting Evaluation
19.3.1.2 Shadow Denoising
19.3.2 Ray Traced Reflections
19.3.2.1 Simplified Reflection Shading
19.3.2.2 Denoising for Glossy Reflections
19.3.2.3 Specular Shading with Ray Traced Reflections
19.3.3 Ray Traced Diffuse Global Illumination
19.3.3.1 Ambient Occlusion
19.3.3.2 Indirect Diffuse from Light Maps
19.3.3.3 Real-Time Global Illumination.
19.3.3.4 Denoising for Ambient Occlusion and Diffuse Global Illumination.

Ray Tracing Gems : High-Quality and Real-Time Rendering with DXR and Other APIs.

Similar Items