commit f88df1efd08f43ab4651204a4f01abb053b41dfb
Author: nullprop <git@nullprop.sh>
Date:   Sat Oct 1 23:58:09 2022 +0300

    init

diff --git a/.gitignore b/.gitignore
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+[[package]]
+name = "winit"
+version = "0.26.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b43cc931d58b99461188607efd7acb2a093e65fc621f54cad78517a6063e73a"
+dependencies = [
+ "bitflags",
+ "cocoa",
+ "core-foundation 0.9.3",
+ "core-graphics 0.22.3",
+ "core-video-sys",
+ "dispatch",
+ "instant",
+ "lazy_static",
+ "libc",
+ "log",
+ "mio",
+ "ndk",
+ "ndk-glue",
+ "ndk-sys",
+ "objc",
+ "parking_lot 0.11.2",
+ "percent-encoding",
+ "raw-window-handle",
+ "smithay-client-toolkit",
+ "wasm-bindgen",
+ "wayland-client",
+ "wayland-protocols",
+ "web-sys",
+ "winapi",
+ "x11-dl",
+]
+
+[[package]]
+name = "x11-dl"
+version = "2.20.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c83627bc137605acc00bb399c7b908ef460b621fc37c953db2b09f88c449ea6"
+dependencies = [
+ "lazy_static",
+ "libc",
+ "pkg-config",
+]
+
+[[package]]
+name = "xcursor"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "463705a63313cd4301184381c5e8042f0a7e9b4bb63653f216311d4ae74690b7"
+dependencies = [
+ "nom",
+]
+
+[[package]]
+name = "xml-rs"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2d7d3948613f75c98fd9328cfdcc45acc4d360655289d0a7d4ec931392200a3"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..26288d2
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "renderer"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+winit = "0.26"
+env_logger = "0.9"
+log = "0.4"
+wgpu = "0.13"
+pollster = "0.2"
+bytemuck = { version = "1.4", features = [ "derive" ] }
+image = { version = "0.24", features = [ "png" ] }
diff --git a/assets/test.png b/assets/test.png
new file mode 100644
index 0000000..aab7c3e
Binary files /dev/null and b/assets/test.png differ
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..c350231
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,7 @@
+mod surf;
+
+fn main() {
+    env_logger::init();
+    pollster::block_on(surf::updater::run());
+}
+
diff --git a/src/shaders/test.wgsl b/src/shaders/test.wgsl
new file mode 100644
index 0000000..047129c
--- /dev/null
+++ b/src/shaders/test.wgsl
@@ -0,0 +1,33 @@
+// Vertex shader
+
+struct VertexInput {
+    @location(0) position: vec3<f32>,
+    @location(1) tex_coords: vec2<f32>,
+}
+
+struct VertexOutput {
+    @builtin(position) clip_position: vec4<f32>,
+    @location(0) tex_coords: vec2<f32>,
+}
+
+@vertex
+fn vs_main(
+    model: VertexInput,
+) -> VertexOutput {
+    var out: VertexOutput;
+    out.tex_coords = model.tex_coords;
+    out.clip_position = vec4<f32>(model.position, 1.0);
+    return out;
+}
+
+// Fragment shader
+
+@group(0) @binding(0)
+var t_diffuse: texture_2d<f32>;
+@group(0)@binding(1)
+var s_diffuse: sampler;
+
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    return textureSample(t_diffuse, s_diffuse, in.tex_coords);
+}
diff --git a/src/surf/mod.rs b/src/surf/mod.rs
new file mode 100644
index 0000000..9b5cf9c
--- /dev/null
+++ b/src/surf/mod.rs
@@ -0,0 +1,3 @@
+pub mod state;
+pub mod updater;
+pub mod types;
diff --git a/src/surf/state.rs b/src/surf/state.rs
new file mode 100644
index 0000000..e6bad35
--- /dev/null
+++ b/src/surf/state.rs
@@ -0,0 +1,301 @@
+use wgpu::{include_wgsl, util::DeviceExt};
+use winit::{event::*, window::Window};
+
+use super::types::Vertex;
+
+// test data
+const VERTICES: &[Vertex] = &[
+    Vertex { position: [-0.0868241, 0.49240386, 0.0], tex_coords: [0.4131759, 0.99240386], }, // A
+    Vertex { position: [-0.49513406, 0.06958647, 0.0], tex_coords: [0.0048659444, 0.56958647], }, // B
+    Vertex { position: [-0.21918549, -0.44939706, 0.0], tex_coords: [0.28081453, 0.05060294], }, // C
+    Vertex { position: [0.35966998, -0.3473291, 0.0], tex_coords: [0.85967, 0.1526709], }, // D
+    Vertex { position: [0.44147372, 0.2347359, 0.0], tex_coords: [0.9414737, 0.7347359], }, // E
+];
+const INDICES: &[u16] = &[0, 1, 4, 1, 2, 4, 2, 3, 4];
+
+pub struct State {
+    pub size: winit::dpi::PhysicalSize<u32>,
+
+    surface: wgpu::Surface,
+    device: wgpu::Device,
+    queue: wgpu::Queue,
+    config: wgpu::SurfaceConfiguration,
+    render_pipeline: wgpu::RenderPipeline,
+    vertex_buffer: wgpu::Buffer,
+    index_buffer: wgpu::Buffer,
+    num_indices: u32,
+    diffuse_bind_group: wgpu::BindGroup,
+}
+
+impl State {
+    // Creating some of the wgpu types requires async code
+    pub async fn new(window: &Window) -> Self {
+        let size = window.inner_size();
+        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 {
+                    features: wgpu::Features::empty(),
+                    limits: wgpu::Limits::default(),
+                    label: None,
+                },
+                None, // Trace path
+            )
+            .await
+            .unwrap();
+
+        let config = wgpu::SurfaceConfiguration {
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            format: surface.get_supported_formats(&adapter)[0],
+            width: size.width,
+            height: size.height,
+            present_mode: wgpu::PresentMode::Fifo,
+        };
+
+        surface.configure(&device, &config);
+
+        // Test image
+        let diffuse_bytes = include_bytes!("../../assets/test.png");
+        let diffuse_image = image::load_from_memory(diffuse_bytes).unwrap();
+        let diffuse_rgba = diffuse_image.to_rgba8();
+        use image::GenericImageView;
+        let dimensions = diffuse_image.dimensions();
+        let texture_size = wgpu::Extent3d {
+            width: dimensions.0,
+            height: dimensions.1,
+            depth_or_array_layers: 1,
+        };
+        let diffuse_texture = device.create_texture(&wgpu::TextureDescriptor {
+            // All textures are stored as 3D, we represent our 2D texture
+            // by setting depth to 1.
+            size: texture_size,
+            mip_level_count: 1, // We'll talk about this a little later
+            sample_count: 1,
+            dimension: wgpu::TextureDimension::D2,
+            // Most images are stored using sRGB so we need to reflect that here.
+            format: wgpu::TextureFormat::Rgba8UnormSrgb,
+            // TEXTURE_BINDING tells wgpu that we want to use this texture in shaders
+            // COPY_DST means that we want to copy data to this texture
+            usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
+            label: Some("diffuse_texture"),
+        });
+        queue.write_texture(
+            // Tells wgpu where to copy the pixel data
+            wgpu::ImageCopyTexture {
+                texture: &diffuse_texture,
+                mip_level: 0,
+                origin: wgpu::Origin3d::ZERO,
+                aspect: wgpu::TextureAspect::All,
+            },
+            // The actual pixel data
+            &diffuse_rgba,
+            // The layout of the texture
+            wgpu::ImageDataLayout {
+                offset: 0,
+                bytes_per_row: std::num::NonZeroU32::new(4 * dimensions.0),
+                rows_per_image: std::num::NonZeroU32::new(dimensions.1),
+            },
+            texture_size,
+        );
+        let diffuse_texture_view =
+            diffuse_texture.create_view(&wgpu::TextureViewDescriptor::default());
+        let diffuse_sampler = device.create_sampler(&wgpu::SamplerDescriptor {
+            address_mode_u: wgpu::AddressMode::Repeat,
+            address_mode_v: wgpu::AddressMode::Repeat,
+            address_mode_w: wgpu::AddressMode::Repeat,
+            mag_filter: wgpu::FilterMode::Linear,
+            min_filter: wgpu::FilterMode::Linear,
+            mipmap_filter: wgpu::FilterMode::Linear,
+            ..Default::default()
+        });
+        let texture_bind_group_layout =
+            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+                entries: &[
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 0,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Texture {
+                            multisampled: false,
+                            view_dimension: wgpu::TextureViewDimension::D2,
+                            sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                        },
+                        count: None,
+                    },
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 1,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        // This should match the filterable field of the
+                        // corresponding Texture entry above.
+                        ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                        count: None,
+                    },
+                ],
+                label: Some("texture_bind_group_layout"),
+            });
+        let diffuse_bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+            layout: &texture_bind_group_layout,
+            entries: &[
+                wgpu::BindGroupEntry {
+                    binding: 0,
+                    resource: wgpu::BindingResource::TextureView(&diffuse_texture_view),
+                },
+                wgpu::BindGroupEntry {
+                    binding: 1,
+                    resource: wgpu::BindingResource::Sampler(&diffuse_sampler),
+                },
+            ],
+            label: Some("diffuse_bind_group"),
+        });
+
+        // let shader = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+        //     label: Some("Shader"),
+        //     source: wgpu::ShaderSource::Wgsl(include_str!("../shaders/test.wgsl").into()),
+        // });
+        let shader = device.create_shader_module(include_wgsl!("../shaders/test.wgsl"));
+
+        let render_pipeline_layout =
+            device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+                label: Some("Render Pipeline Layout"),
+                bind_group_layouts: &[&texture_bind_group_layout],
+                push_constant_ranges: &[],
+            });
+
+        let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+            label: Some("Render Pipeline"),
+            layout: Some(&render_pipeline_layout),
+            vertex: wgpu::VertexState {
+                module: &shader,
+                entry_point: "vs_main",
+                buffers: &[Vertex::desc()],
+            },
+            fragment: Some(wgpu::FragmentState {
+                // 3.
+                module: &shader,
+                entry_point: "fs_main",
+                targets: &[Some(wgpu::ColorTargetState {
+                    format: config.format,
+                    blend: Some(wgpu::BlendState::REPLACE),
+                    write_mask: wgpu::ColorWrites::ALL,
+                })],
+            }),
+            primitive: wgpu::PrimitiveState {
+                topology: wgpu::PrimitiveTopology::TriangleList,
+                strip_index_format: None,
+                front_face: wgpu::FrontFace::Ccw,
+                cull_mode: Some(wgpu::Face::Back),
+                // Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
+                polygon_mode: wgpu::PolygonMode::Fill,
+                // Requires Features::DEPTH_CLIP_CONTROL
+                unclipped_depth: false,
+                // Requires Features::CONSERVATIVE_RASTERIZATION
+                conservative: false,
+            },
+            depth_stencil: None,
+            multisample: wgpu::MultisampleState {
+                count: 1,
+                mask: !0,
+                alpha_to_coverage_enabled: false,
+            },
+            multiview: None,
+        });
+
+        let vertex_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+            label: Some("Vertex Buffer"),
+            contents: bytemuck::cast_slice(VERTICES),
+            usage: wgpu::BufferUsages::VERTEX,
+        });
+
+        let index_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+            label: Some("Index Buffer"),
+            contents: bytemuck::cast_slice(INDICES),
+            usage: wgpu::BufferUsages::INDEX,
+        });
+        let num_indices = INDICES.len() as u32;
+
+        return Self {
+            size,
+            surface,
+            device,
+            queue,
+            config,
+            render_pipeline,
+            vertex_buffer,
+            index_buffer,
+            num_indices,
+            diffuse_bind_group,
+        };
+    }
+
+    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);
+        }
+    }
+
+    pub fn input(&mut self, event: &WindowEvent) -> bool {
+        return false;
+    }
+
+    pub fn update(&mut self) {}
+
+    pub 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 mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                label: Some("Render Pass"),
+                color_attachments: &[
+                    // This is what @location(0) in the fragment shader targets
+                    Some(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,
+            });
+
+            render_pass.set_pipeline(&self.render_pipeline);
+            render_pass.set_bind_group(0, &self.diffuse_bind_group, &[]);
+            render_pass.set_vertex_buffer(0, self.vertex_buffer.slice(..));
+            render_pass.set_index_buffer(self.index_buffer.slice(..), wgpu::IndexFormat::Uint16);
+            render_pass.draw_indexed(0..self.num_indices, 0, 0..1);
+        }
+
+        // submit will accept anything that implements IntoIter
+        self.queue.submit(std::iter::once(encoder.finish()));
+        output.present();
+
+        return Ok(());
+    }
+}
diff --git a/src/surf/types.rs b/src/surf/types.rs
new file mode 100644
index 0000000..767f5d4
--- /dev/null
+++ b/src/surf/types.rs
@@ -0,0 +1,19 @@
+#[repr(C)]
+#[derive(Copy, Clone, Debug, bytemuck::Pod, bytemuck::Zeroable)]
+pub struct Vertex {
+    pub position: [f32; 3],
+    pub tex_coords: [f32; 2],
+}
+
+impl Vertex {
+    const ATTRIBS: [wgpu::VertexAttribute; 2] =
+        wgpu::vertex_attr_array![0 => Float32x3, 1 => Float32x2];
+
+    pub fn desc<'a>() -> wgpu::VertexBufferLayout<'a> {
+        return wgpu::VertexBufferLayout {
+            array_stride: std::mem::size_of::<Vertex>() as wgpu::BufferAddress,
+            step_mode: wgpu::VertexStepMode::Vertex,
+            attributes: &Self::ATTRIBS,
+        };
+    }
+}
diff --git a/src/surf/updater.rs b/src/surf/updater.rs
new file mode 100644
index 0000000..19d9c57
--- /dev/null
+++ b/src/surf/updater.rs
@@ -0,0 +1,64 @@
+use super::state::State;
+use winit::{
+    event::*,
+    event_loop::{ControlFlow, EventLoop},
+    window::WindowBuilder,
+};
+
+pub async fn run() {
+    let event_loop = EventLoop::new();
+    let window = WindowBuilder::new().build(&event_loop).unwrap();
+    let mut state = State::new(&window).await;
+
+    // Event loop
+    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, .. } => {
+                            state.resize(**new_inner_size);
+                        }
+                        WindowEvent::CursorMoved { position, .. } => {}
+                        _ => {}
+                    }
+                }
+            }
+            Event::RedrawRequested(window_id) if window_id == window.id() => {
+                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::MainEventsCleared => {
+                // RedrawRequested will only trigger once, unless we manually
+                // request it.
+                window.request_redraw();
+            }
+            _ => {}
+        }
+    });
+}