commit cce827be91c60f4a88dd1f4ac1beac7bd0bf09c5
Author: Maximilian Ammann <max@maxammann.org>
Date:   Sun Nov 28 12:00:47 2021 +0100

    Add README and first files for rendering to a window

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 00000000..0a8dab03
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1956 @@
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+ "naga",
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+ "raw-window-handle 0.3.4",
+ "renderdoc-sys",
+ "thiserror",
+ "wasm-bindgen",
+ "web-sys",
+ "wgpu-types",
+ "winapi",
+]
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+ "bitflags",
+]
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+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
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+ "winapi",
+]
+
+[[package]]
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+ "bitflags",
+ "cocoa",
+ "core-foundation 0.9.2",
+ "core-graphics 0.22.3",
+ "core-video-sys",
+ "dispatch",
+ "instant",
+ "lazy_static",
+ "libc",
+ "log",
+ "mio",
+ "mio-misc",
+ "ndk",
+ "ndk-glue",
+ "ndk-sys",
+ "objc",
+ "parking_lot",
+ "percent-encoding",
+ "raw-window-handle 0.3.4",
+ "scopeguard",
+ "smithay-client-toolkit",
+ "wayland-client",
+ "winapi",
+ "x11-dl",
+]
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+ "nom",
+]
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+ "dirs",
+]
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+[[package]]
+name = "xml-rs"
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 00000000..8d3116f4
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,37 @@
+[package]
+name = "mapr"
+version = "0.1.0"
+authors = ["Maximilian Ammann <max@maxammann.org>"]
+edition = "2021"
+resolver = "2"
+
+[features]
+
+[dependencies]
+
+# Rendering
+winit = "0.25"
+wgpu = "0.11"
+pollster = "0.2"
+
+# Logging
+log = "0.4"
+env_logger = "0.9"
+
+# Utils
+hexdump = "0.1"
+
+# Serialization
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
+[dev-dependencies]
+criterion = "0.3"
+# Support logging in tests
+test-env-log = "0.2"
+env_logger = "0.8" # Used for test-env-log
+
+
+[[bin]]
+name = "mapr"
+path = "src/main.rs"
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 00000000..baa15442
--- /dev/null
+++ b/README.md
@@ -0,0 +1,97 @@
+<h1 align="center">mapr</h1>
+<p align="center">
+  <img width=200px alt="Logo" src="https://">
+</p>
+<div align="center">
+  <strong>Native Maps for Web, Mobile and Linux</strong>
+</div>
+<div align="center">
+  A map rendering library written in Rust.
+</div>
+
+<div align="center">
+  <img src="https://img.shields.io/badge/stability-experimental-orange.svg?style=flat-square" 
+      alt="Stability" />
+  <a href="https://github.com/maxammann/mapr/actions/workflows/rust.yml">    
+    <img src="https://img.shields.io/github/workflow/status/maxammann/mapr/Rust?style=flat-square"
+        alt="Build status" />
+  </a>
+</div>
+
+<div align="center">
+  <h3>
+    <a href="https://">
+      Example
+    </a>
+    <span> | </span>
+    <a href="https://maxammann.github.io/mapr">
+      Documentation
+    </a>
+  </h3>
+</div>
+
+
+## Description
+
+TODO
+
+
+## Features
+
+* None so far
+
+## Goals
+
+* Renders [vector tiles](https://docs.mapbox.com/vector-tiles/specification/).
+* Runs on:
+  * Web via WebAssembly and WebGPU,
+  * Linux (Xorg/Wayland) via Vulkan,
+  * Android via OpenGL,
+  * iOS via Metal.
+* Supports the [TileJSON](https://docs.mapbox.com/help/glossary/tilejson/) standard
+* Pimarily 
+
+## Non-Goals
+
+* Rendering any kind of rasterized data
+
+## Building
+
+Now, to build the project:
+
+```bash
+git clone git@github.com/maxammann/mapr
+cargo build
+```
+
+## Running on Linux
+
+Fuzz using three clients:
+
+```bash
+cargo run --bin mapr --
+```
+
+## Testing
+
+```bash
+cargo test
+```
+
+## Rust Setup
+
+Install [rustup](https://rustup.rs/).
+
+The toolchain will be automatically downloaded when building this project. See [./rust-toolchain.toml](./rust-toolchain.toml) for more details about the toolchain.
+
+## Documentation
+
+This generates the documentation for this crate and opens the browser. This also includes the documentation of every
+dependency.
+
+```bash
+cargo doc --open
+```
+
+You can also view the up-to-date documentation [here](https://).
+
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 00000000..af96003b
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "1.56.1"
+targets = [ "x86_64-unknown-linux-gnu" ]
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 00000000..63d0cf2d
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,178 @@
+use std::iter;
+
+use winit::{
+    event::*,
+    event_loop::{ControlFlow, EventLoop},
+    window::{Window, WindowBuilder},
+};
+
+struct State {
+    surface: wgpu::Surface,
+    device: wgpu::Device,
+    queue: wgpu::Queue,
+    config: wgpu::SurfaceConfiguration,
+    size: winit::dpi::PhysicalSize<u32>,
+}
+
+impl State {
+    async fn new(window: &Window) -> Self {
+        let size = window.inner_size();
+
+        // The instance is a handle to our GPU
+        // BackendBit::PRIMARY => Vulkan + Metal + DX12 + Browser WebGPU
+        let instance = wgpu::Instance::new(wgpu::Backends::all());
+        let surface = unsafe { instance.create_surface(window) };
+        let adapter = instance
+            .request_adapter(&wgpu::RequestAdapterOptions {
+                power_preference: wgpu::PowerPreference::HighPerformance,
+                compatible_surface: Some(&surface),
+                force_fallback_adapter: false,
+            })
+            .await
+            .unwrap();
+
+        let (device, queue) = adapter
+            .request_device(
+                &wgpu::DeviceDescriptor {
+                    label: None,
+                    features: wgpu::Features::empty(),
+                    limits: wgpu::Limits::default(),
+                },
+                // Some(&std::path::Path::new("trace")), // Trace path
+                None,
+            )
+            .await
+            .unwrap();
+
+        let config = wgpu::SurfaceConfiguration {
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            format: surface.get_preferred_format(&adapter).unwrap(),
+            width: size.width,
+            height: size.height,
+            present_mode: wgpu::PresentMode::Fifo,
+        };
+        surface.configure(&device, &config);
+
+        Self {
+            surface,
+            device,
+            queue,
+            config,
+            size,
+        }
+    }
+
+    pub fn resize(&mut self, new_size: winit::dpi::PhysicalSize<u32>) {
+        if new_size.width > 0 && new_size.height > 0 {
+            self.size = new_size;
+            self.config.width = new_size.width;
+            self.config.height = new_size.height;
+            self.surface.configure(&self.device, &self.config);
+        }
+    }
+
+    #[allow(unused_variables)]
+    fn input(&mut self, event: &WindowEvent) -> bool {
+        false
+    }
+
+    fn update(&mut self) {}
+
+    fn render(&mut self) -> Result<(), wgpu::SurfaceError> {
+        let output = self.surface.get_current_texture()?;
+        let view = output
+            .texture
+            .create_view(&wgpu::TextureViewDescriptor::default());
+
+        let mut encoder = self
+            .device
+            .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+                label: Some("Render Encoder"),
+            });
+
+        {
+            let _render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                label: Some("Render Pass"),
+                color_attachments: &[wgpu::RenderPassColorAttachment {
+                    view: &view,
+                    resolve_target: None,
+                    ops: wgpu::Operations {
+                        load: wgpu::LoadOp::Clear(wgpu::Color {
+                            r: 0.1,
+                            g: 0.2,
+                            b: 0.3,
+                            a: 1.0,
+                        }),
+                        store: true,
+                    },
+                }],
+                depth_stencil_attachment: None,
+            });
+        }
+
+        self.queue.submit(iter::once(encoder.finish()));
+        output.present();
+
+        Ok(())
+    }
+}
+
+fn main() {
+    env_logger::init();
+    let event_loop = EventLoop::new();
+    let window = WindowBuilder::new().build(&event_loop).unwrap();
+
+    // State::new uses async code, so we're going to wait for it to finish
+    let mut state: State = pollster::block_on(State::new(&window));
+
+    event_loop.run(move |event, _, control_flow| {
+        match event {
+            Event::WindowEvent {
+                ref event,
+                window_id,
+            } if window_id == window.id() => {
+                if !state.input(event) {
+                    // UPDATED!
+                    match event {
+                        WindowEvent::CloseRequested
+                        | WindowEvent::KeyboardInput {
+                            input:
+                            KeyboardInput {
+                                state: ElementState::Pressed,
+                                virtual_keycode: Some(VirtualKeyCode::Escape),
+                                ..
+                            },
+                            ..
+                        } => *control_flow = ControlFlow::Exit,
+                        WindowEvent::Resized(physical_size) => {
+                            state.resize(*physical_size);
+                        }
+                        WindowEvent::ScaleFactorChanged { new_inner_size, .. } => {
+                            // new_inner_size is &&mut so w have to dereference it twice
+                            state.resize(**new_inner_size);
+                        }
+                        _ => {}
+                    }
+                }
+            }
+            Event::RedrawRequested(_) => {
+                state.update();
+                match state.render() {
+                    Ok(_) => {}
+                    // Reconfigure the surface if lost
+                    Err(wgpu::SurfaceError::Lost) => state.resize(state.size),
+                    // The system is out of memory, we should probably quit
+                    Err(wgpu::SurfaceError::OutOfMemory) => *control_flow = ControlFlow::Exit,
+                    // All other errors (Outdated, Timeout) should be resolved by the next frame
+                    Err(e) => eprintln!("{:?}", e),
+                }
+            }
+            Event::RedrawEventsCleared => {
+                // RedrawRequested will only trigger once, unless we manually
+                // request it.
+                window.request_redraw();
+            }
+            _ => {}
+        }
+    });
+}