HLSL and Pixel Shaders for XAML Developers : OREILLY AND ASSOCIATE - Walt Ritscher

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HLSL and Pixel Shaders for XAML Developers

By: Walt Ritscher

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Paperback | 20 July 2012

At a Glance

Paperback
75 Pages

Dimensions(cm)
26 x 17 x 1

Paperback

RRP $28.75

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Graphic Shaders are used throughout the game and movie industry to improve onscreen graphics. They are versatile, doing important tasks like making computer rendered aliens look realistic, providing the ripples on a background lake or growing fur on the latest Pixar monster. In the PC world, programmers are often delighted to find that shaders are nothing more than a miniature program that is optimized to run on the computers GPU. This happiness fades when they start exploring the strange programming model underlying shaders however. Because shaders are strung together in an unusual fashion and run on a massive parallel processer developers shouldn't use their traditional OO or procedural approach to writing code. Writing effective shaders requires a mind shift regarding how to craft a useful algorithm. To top it off, shaders are written in a unfamiliar C-like language. In the Microsoft DirectX world the dominant language is High Level Shader Language or HLSL. Silverlight and WPF support adding Pixel shaders to UI elements. For common shader scenarios (like motion blur and color effects) Microsoft includes a handful of prebuilt shaders in Expression Blend. These free shaders are a nice addition but will not satisfy every shader scenario. Luckily, .NET provides custom shaders to fill the gap. To create a custom shader a developer must learn and understand HLSL and how it fits into the XAML world. This book explains how to work with WPF/Silverlight shaders, from adding them to a project to placing them in the visual tree. It also contains a complete tutorial showing the facets of HLSL code that are important to the XAML developer.

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