Update README/DEPENDENCIES docs

Author: zao

DEPENDENCIES.md

@@ -3,8 +3,9 @@
 ## Introduction
 
 `SimpleGraphic.dll` is the host environment for Lua.
-It contains the API used by the application's Lua logic, as well as a 2D OpenGL
-renderer, window management, input handling, and a debug console.
+It contains the API used by the application's Lua logic, as well as a
+2D OpenGL ES 2.0 renderer, window management, input handling, and a
+debug console.
 It exports one symbol, `RunLuaFileAsWin`, which is passed a
 C-style argc/argv argument list, with the script path as `argv[0]`.
 
@@ -21,27 +22,52 @@ appears during the program's initialisation
 
 ## Building
 
-`SimpleGraphic.dll` is currently built using Visual Studio 2019.
+`SimpleGraphic.dll` is currently built using Visual Studio 2022 for 64-bit.
 
-The DLL depends on a number of 3rd-party libraries. Details and instructions
-for how to obtain them are in [DEPENDENCIES.md](DEPENDENCIES.md).
+The DLL depends on a number of 3rd-party libraries, all provided either as
+direct submodules and built by the main `CMakeLists.txt` file or built from
+ports in the `vcpkg` submodule as part of the build process.
 
-Once the libraries are obtained, follow these instructions to build the DLL:
-1) Open `SimpleGraphic.sln` in Visual Studio 2019
-2) Choose the "Release|x86" configuration
-3) Build the solution
-4) The resulting `SimpleGraphic.dll` can be found in the `Release` directory
-5) Copy `SimpleGraphic.dll` to the Path of Building install directory,
-replacing the existing file.
+The build process will also build the `lcurl` and `lzip` Lua extensions
+against the same LuaJIT version as the DLL is built with.
+
+A short guide on building and debugging the DLL is available in
+[CONTRIBUTING.md](CONTRIBUTING.md).
+
+The `INSTALL` target will deploy the DLL, its dependencies and the VC++
+runtime to the installation directory.
 
 ## Debugging
 
 Since SimpleGraphic.dll is dynamically loaded by `PathOfBuilding.exe`,
 to debug it, run `PathOfBuilding.exe` and then attach to that process using the
 "Debug" > "Attach to Process..." menu option in Visual Studio.
 
-If debugging of the initialization is desired, then adding a `MessageBox`
-or some other pause at the start will give you time to attach and continue.
+Visual Studio can also be configured to start the Path of Building executable
+when debugging a target which troubleshooting of early startup.
+
+## Project dependencies
+
+Runtime and utilities:
+* [LuaJIT](https://github.com/LuaJIT/LuaJIT) - fast Lua fork with JIT compilation that has diverged from upstream Lua at version 5.1
+* [curl](https://curl.se/) - very common HTTP library, exposed to Lua
+* [fmtlib](https://fmt.dev/) - modern string formatting
+* [libsodium](https://doc.libsodium.org/) - friendly cryptographic primitives, used in SimpleGraphic for fast hashing
+* [pkgconf](http://pkgconf.org/) - part of the build process to locate builds of bundled libraries
+* [re2](https://github.com/google/re2) - regex library
+
+Graphics:
+* [GLFW](https://www.glfw.org/) - multi-platform windowing library for OpenGL (and other APIs)
+* [ANGLE](https://github.com/google/angle) - OpenGL ES runtime from Google built on top of native rendering APIs
+* [Glad 2](https://gen.glad.sh/) - OpenGL header generator
+
+Compression and image formats:
+* [stb](https://github.com/nothings/stb) - single-header libraries for many things, here image reading and writing
+* [giflib](https://sourceforge.net/projects/giflib/) - GIF loading/saving
+* [libjpeg-turbo](https://libjpeg-turbo.org/) - JPEG loading/saving
+* [libpng](http://www.libpng.org/pub/png/libpng.html) - PNG loading/saving
+* [liblzma](https://tukaani.org/xz/) - LZMA compression/decompression
+* [zlib](https://www.zlib.net/) - zlib compression/decompression
 
 ## Licence