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Building FastDirectX from Source

Prerequisites

  • Windows 10 / 11 (x64)
  • JDK 21+ (e.g. Eclipse Temurin or Microsoft OpenJDK, with JAVA_HOME set)
  • Maven 3.9+
  • Visual Studio 2019 / 2022 (Desktop development with C++, MSVC toolchain)
  • Windows SDK with DirectX 11 headers and libraries (d3d11.lib, dxgi.lib, d3dcompiler.lib)

Quick Build

:: 1. Compile native FastDirectX.dll
compile.bat

:: 2. Compile Java classes and test demo
mvn clean test-compile

Running the Interactive Demo

run-demo.bat

Native Architecture & FFM Linkage

FastDirectX uses pure C ABI exports (fastdx_*) defined in native/DirectXBackend.h and implemented in native/DirectXBackend.cpp. Java binds directly to these entry points using Java 21's Linker.nativeLinker() and SymbolLookup via FastCore.lookupFunction(). No intermediate JNI wrapper classes or .def files are required.