Kha SDK

Kha is a low-level SDK designed for building games and media applications in a portable manner. It is built on the Haxe programming language and utilizes the krafix shader-compiler to cross-compile code and optimize assets for a wide variety of systems.

Key characteristics include:

• Generational API Design: Provides a generational approach to graphics and audio APIs to maximize performance on each target.
• High Performance: Supports hardware-accelerated 2D and high-end 3D graphics, with fallback support (e.g., HTML5 canvas).
• Portability: Can run on top of other game engines (like Unity3D) and can be compiled into C# or Java libraries.
• Shader Cross-Compilation: Allows writing shaders in GLSL which are then cross-compiled for specific targets.

You can install hxnodejs using Haxelib. Use the released version via the standard install command, or use the GitHub URL to get the latest version.

• Released version: haxelib install hxnodejs
• Latest from GitHub: haxelib git hxnodejs https://github.com/HaxeFoundation/hxnodejs

To compile Haxe code that uses hxnodejs into a JavaScript file compatible with Node.JS, use the haxe compiler with the -lib hxnodejs flag.

It is recommended to add the -D js-es=6 flag to produce cleaner JavaScript output, as Node.JS is ES6-compliant.

To compile the zlib library and run the included test programs on most Unix-like systems, use the following sequence of commands:

1. Run the configuration script: ./configure
2. Compile and run tests: make test
3. Install the library: make install (only if the tests pass)

The standard Unix build process is not used for Windows or VMS platforms:

• Windows: Use the specialized makefiles located in the win32/ or contrib/vstudio/ directories.
• VMS: Use the make_vms.com script.

This example demonstrates how to use the js.node.Net module to create a simple TCP echo server in Haxe.

class Main {
    static function main() {
        var server = js.node.Net.createServer(function(socket) {
            socket.write("Echo server\n\n");
            socket.pipe(socket);
        });
        server.listen(1337, "127.0.0.1");
    }
}

Kha supports a vast array of platforms, ranging from web and desktop to mobile and consoles:

• Web: HTML5 (WebGL 2, WebGL, canvas, or WebWorker), Node.js (for server versions).
• Desktop: Windows (Direct3D 12, 11, 9, Vulkan, or OpenGL), Linux (Vulkan or OpenGL), macOS (Metal or OpenGL), FreeBSD.
• Mobile: Android (Vulkan or OpenGL), iOS (Metal or OpenGL), tvOS.
• Embedded/Other: Raspberry Pi, Universal Windows Platform (UWP), Java and AWT, C# and Windows Presentation Foundation (WPF).
• Consoles: PlayStation 4, PlayStation 5, Xbox One, Xbox Series X|S, Nintendo Switch, and Nintendo Switch 2.

Note: Console-specific code is not public. Access requires registration with Microsoft, Nintendo, or Sony and contacting the Kha team.