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Direct3D Rendering Cookbook

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Direct3D Rendering Cookbook

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Direct3D Rendering Cookbook
Jan, 2014 | 430 pages
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Table of Contents (19 chapters)
Direct3D Rendering Cookbook
Direct3D Rendering Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Getting Started with Direct3D
Getting Started with Direct3D
Introduction
Introducing Direct3D 11.1 and 11.2
Building a Direct3D 11 application with C# and SharpDX
Initializing a Direct3D 11.1/11.2 device and swap chain
Debugging your Direct3D application
2
Rendering with Direct3D
Rendering with Direct3D
Introduction
Using the sample rendering framework
Creating device-dependent resources
Creating size-dependent resources
Creating a Direct3D renderer class
Rendering primitives
Applying multisample anti-aliasing
Implementing texture sampling
3
Rendering Meshes
Rendering Meshes
Introduction
Rendering a cube and sphere
Preparing the vertex and constant buffers for materials and lighting
Adding material and lighting
Using a right-handed coordinate system
Loading a static mesh from a file
4
Animating Meshes with Vertex Skinning
Animating Meshes with Vertex Skinning
Introduction
Preparing the vertex shader and buffers for vertex skinning
Loading bones in the mesh renderer
Animating bones
5
Applying Hardware Tessellation
Applying Hardware Tessellation
Introduction
Preparing the vertex shader and buffers for tessellation
Tessellating a triangle and quad
Tessellating bicubic Bezier surfaces
Refining meshes with Phong tessellation
Optimizing tessellation through back-face culling and dynamic Level-of-Detail
6
Adding Surface Detail with Normal and Displacement Mapping
Adding Surface Detail with Normal and Displacement Mapping
Introduction
Referencing multiple textures in a material
Adding surface detail with normal mapping
Adding surface detail with displacement mapping
Implementing displacement decals
Optimizing tessellation based on displacement decal (displacement adaptive tessellation)
7
Performing Image Processing Techniques
Performing Image Processing Techniques
Introduction
Running a compute shader – desaturation (grayscale)
Adjusting the contrast and brightness
Implementing box blur using separable convolution filters
Implementing a Gaussian blur filter
Detecting edges with the Sobel edge-detection filter
Calculating an image's luminance histogram
8
Incorporating Physics and Simulations
Incorporating Physics and Simulations
Introduction
Using a physics engine
Simulating ocean waves
Rendering particles
9
Rendering on Multiple Threads and Deferred Contexts
Rendering on Multiple Threads and Deferred Contexts
Introduction
Benchmarking multithreaded rendering
Implementing multithreaded dynamic cubic environment mapping
Implementing dual paraboloid environment mapping
10
Implementing Deferred Rendering
Implementing Deferred Rendering
Introduction
Filling the G-Buffer
Implementing a screen-aligned quad renderer
Reading the G-Buffer
Adding multiple lights
Incorporating multisample anti-aliasing
11
Integrating Direct3D with XAML and Windows 8.1
Integrating Direct3D with XAML and Windows 8.1
Introduction
Preparing the swap chain for a Windows Store app
Rendering to a CoreWindow
Rendering to an XAML SwapChainPanel
Loading and compiling resources asynchronously
Further Reading
Further Reading
Index
Index

Adjusting the contrast and brightness

In this recipe we will adjust the contrast of the image by interpolating the color towards or away from gray, and adjusting the brightness by adding or removing the black color from the image. By moving the colors closer to gray (0.5, 0.5, 0.5), we are reducing the contrast, and by moving away in the positive direction we are increasing the contrast. Reducing the contrast by 100 percent will result in a totally gray image, while reducing by 200 percent, generates a negative image.

Getting ready

Begin with the resulting code from the previous recipe to adjust the color saturation levels, including the There's more… section for the interpolation of the source and target values.

How to do it…

First we will implement the contrast adjustment shader.

  1. As we did in the Running a compute shader – desaturation (grayscale) recipe earlier in this chapter, add the following HLSL shader code to a string variable such as hlslCode. This will form our compute shader:

    Texture2D...
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