A cross-platform headless app that validates the ShaderTool → ShaderCache → NativeEngine pipeline by rendering a scene using pre-compiled shaders and saving the result as a PNG screenshot.

The app has two parts: a JavaScript scene that describes what to render, and a C++ host that loads pre-compiled shaders, creates a graphics device, executes the scene script, and saves the rendered frame as a PNG.

1. npm run build in JavaScript/ bundles the scene script and extracts preprocessed shader source files.
2. At CMake build time, ShaderTool compiles the shader source files into a binary cache (shaders.bin).
3. At run time, the app loads shaders.bin into ShaderCache, renders the scene to an offscreen texture, and writes output.png.

cd JavaScript npm install npm run build

This produces:

• JavaScript/dist/index.js — bundled scene script
• JavaScript/dist/shaders/<name>/vertex.fx — preprocessed vertex shaders
• JavaScript/dist/shaders/<name>/fragment.fx — preprocessed fragment shaders

Configure and build the PrecompiledShaderTest target as part of the normal BabylonNative CMake build. The CMakeLists.txt invokes ShaderTool to compile the shader files into shaders.bin and copies all assets next to the executable.