Add linux support

Readme.md

@@ -0,0 +1,124 @@
+# Destrum
+
+Destrum is a C++20 Vulkan rendering/game-engine playground. It contains the core `destrum` engine library, a demo application called `lightkeeper`, and an asset-cooking toolchain powered by `TheChef`.
+
+## Features
+
+* Vulkan rendering backend
+* SDL2 window/input setup
+* Scene, GameObject, Component, and Transform systems
+* Mesh and material caching
+* GLTF/FBX model loading
+* Skeletal animation support
+* Skybox/cubemap rendering
+* Asset cooking pipeline for engine and game assets
+* CMake-based build setup with third-party dependencies as submodules
+
+## Repository layout
+
+```txt
+.
+├── cmake/          # Shader compilation CMake helpers
+├── destrum/        # Core engine library
+│   ├── include/    # Public engine headers
+│   ├── src/        # Engine implementation
+│   ├── assets_src/ # Source engine assets
+│   └── third_party/# Vendored/submodule dependencies
+├── lightkeeper/    # Demo/game executable using Destrum
+│   ├── include/
+│   ├── src/
+│   └── assets_src/
+├── TheChef/        # Asset cooking tool
+└── CMakeLists.txt
+```
+
+## Requirements
+
+* CMake 3.31 or newer
+* C++20 compiler
+* Vulkan SDK
+* Git with submodule support
+
+On Windows, MSVC is supported.
+
+## Dependencies
+
+Most dependencies are included as Git submodules:
+
+* SDL2
+* volk
+* vk-bootstrap
+* Vulkan Memory Allocator
+* GLM
+* nlohmann/json
+* spdlog
+* stb
+* tinygltf
+* tinyexr
+* Assimp
+* FreeType
+* fmt
+
+## Getting started
+
+Clone the repository with submodules:
+
+```bash
+git clone --recurse-submodules https://git.brammie15.dev/brammie15/Destrum.git
+cd Destrum
+```
+
+Configure the project:
+
+```bash
+cmake -S . -B build
+```
+
+Build everything:
+
+```bash
+cmake --build build
+```
+
+Run the demo executable:
+
+```bash
+./build/lightkeeper/lightkeeper
+```
+
+## Asset cooking
+
+Assets are cooked automatically as part of the build through the `TheChef` tool.
+
+You can also run the top-level custom targets manually:
+
+```bash
+cmake --build build --target CookAssets
+cmake --build build --target CleanupAssets
+```
+
+`CookAssets` processes both engine and game assets. `CleanupAssets` removes generated runtime asset output.
+
+## Demo app
+
+`lightkeeper` is the current demo application. It creates an SDL window, initializes the Destrum app, loads assets, sets up a scene, renders meshes, skyboxes, and a skinned animated character.
+
+## Development notes
+
+The engine code lives in `destrum/`. Public headers are under `destrum/include/destrum`, and implementation files are under `destrum/src`.
+
+The main engine target is exposed as:
+
+```cmake
+destrum::destrum
+```
+
+Game/demo targets can link against it:
+
+```cmake
+target_link_libraries(my_game PRIVATE destrum::destrum)
+```
+
+## License
+
+Do what you want dawgs :pray: