If we want to use WebAssembly according to the official specification, without the extra features that Emscripten provides, we need to pass some flags to the emcc command and ensure we're writing code that can be used by WebAssembly with relative ease. In the Writing the example C code section, we wrote a program that rendered a blue rectangle that moved diagonally across a red canvas. It utilized one of Emscripten's ported libraries, SDL2. In this section, we're going to write and compile some C code that doesn't rely on Emscripten's helper methods and ported libraries.
Learn WebAssembly
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Learn WebAssembly
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Overview of this book
WebAssembly is a brand-new technology that represents a paradigm shift in web development. This book teaches programmers to leverage this technology to write high-performance applications that run in the browser. This book introduces you to powerful WebAssembly concepts to help you write lean and powerful web applications with native performance. You start with the evolution of web programming, the state of things today, and what can be done with the advent and release of WebAssembly. We take a look at the journey from JavaScript to asm.js to WebAssembly. We then move on to analyze the anatomy of a WebAssembly module and the relationship between binary and text formats, along with the corresponding JavaScript API. Further on, you'll implement all the techniques you've learned to build a high-performance application using C and WebAssembly, and then port an existing game written in C++ to WebAssembly using Emscripten. By the end of this book, you will be well-equipped to create high-performance applications and games for the web using WebAssembly.
Table of Contents (12 chapters)
Preface
Free Chapter
What is WebAssembly?
Elements of WebAssembly - Wat, Wasm, and the JavaScript API
Setting Up a Development Environment
Installing the Required Dependencies
Creating and Loading a WebAssembly Module
Interacting with JavaScript and Debugging
Creating an Application from Scratch
Porting a Game with Emscripten
Integrating with Node.js
Advanced Tools and Upcoming Features
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