Initial commit - some engine bugs stopping compiling

third-party/glad/example/rust/gl-glfw-mx/README.md

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+Example: gl-glfw-mx
+================
+
+
+This is basic example showcasing `glad-gl` in combination with
+[`glfw`](https://crates.io/crates/glfw). And multiple OpenGL contexts
+in different windows.
+
+To run the example use the following command:
+
+```sh
+./init.sh && cargo run
+```
+
+The `init.sh` script is just a small utility used to generate
+the `glad-gl` crate into the `build/` directory. The `Cargo.toml`
+references the dependency using:
+
+```toml
+[dependencies]
+glad-gl = { path = "./build/glad-gl" }
+```
+
+This example is the basic example of the
+[glfw crate](https://crates.io/crates/glfw) with some
+OpenGL instructions added and just one additional line
+to initialize `glad`:
+
+```rust
+    gl::load(|e| glfw.get_proc_address_raw(e) as *const std::os::raw::c_void);
+```
+
+That's all that is needed to initialize and use OpenGL using `glad`!
+