461 lines
16 KiB
Rust
461 lines
16 KiB
Rust
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mod camera;
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mod texture;
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mod uniforms;
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use image::GenericImageView;
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use std::{iter, mem::size_of, num::NonZeroU32, time::Instant};
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use wgpu::{util::DeviceExt, BufferAddress};
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use winit::{
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event::{ElementState, Event, KeyboardInput, VirtualKeyCode, WindowEvent},
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event_loop::{ControlFlow, EventLoop},
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window::{Window, WindowBuilder},
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};
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use crate::{camera::Camera, texture::Texture, uniforms::Uniforms};
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#[repr(C)]
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#[derive(Copy, Clone, Debug, bytemuck::Pod, bytemuck::Zeroable)]
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struct Vertex {
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position: [f32; 3],
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texture_coordinates: [f32; 2],
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}
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impl Vertex {
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fn desc<'a>() -> wgpu::VertexBufferLayout<'a> {
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wgpu::VertexBufferLayout {
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array_stride: size_of::<Vertex>() as BufferAddress,
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step_mode: wgpu::InputStepMode::Vertex,
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attributes: &[
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wgpu::VertexAttribute {
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offset: 0,
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shader_location: 0,
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format: wgpu::VertexFormat::Float32x3,
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},
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wgpu::VertexAttribute {
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offset: size_of::<[f32; 3]>() as BufferAddress,
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shader_location: 1,
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format: wgpu::VertexFormat::Float32x2,
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},
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],
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}
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}
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}
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const VERTICES: &[Vertex] = &[
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Vertex {
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position: [-0.5, -0.5, -0.5],
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texture_coordinates: [0.0, 0.0],
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}, // 0
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Vertex {
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position: [-0.5, -0.5, 0.5],
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texture_coordinates: [0.0, 1.0],
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}, // 1
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Vertex {
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position: [-0.5, 0.5, 0.5],
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texture_coordinates: [1.0, 1.0],
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}, // 2
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Vertex {
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position: [-0.5, 0.5, -0.5],
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texture_coordinates: [1.0, 0.0],
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}, // 3
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Vertex {
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position: [0.5, -0.5, -0.5],
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texture_coordinates: [1.0, 1.0],
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}, // 4
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Vertex {
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position: [0.5, -0.5, 0.5],
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texture_coordinates: [1.0, 0.0],
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}, // 5
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Vertex {
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position: [0.5, 0.5, 0.5],
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texture_coordinates: [0.0, 0.0],
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}, // 6
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Vertex {
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position: [0.5, 0.5, -0.5],
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texture_coordinates: [0.0, 1.0],
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}, // 7
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];
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#[rustfmt::skip]
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const INDICES: &[u16] = &[
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// left
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0, 1, 2,
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0, 2, 3,
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// bottom
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1, 0, 4,
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1, 4, 5,
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// right
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5, 7, 6,
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5, 4, 7,
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// top
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3, 2, 6,
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3, 6, 7,
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// front
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2, 1, 5,
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2, 5, 6,
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// back
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0, 3, 7,
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0, 7, 4,
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];
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struct State {
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surface: wgpu::Surface,
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device: wgpu::Device,
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queue: wgpu::Queue,
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sc_desc: wgpu::SwapChainDescriptor,
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swap_chain: wgpu::SwapChain,
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size: winit::dpi::PhysicalSize<u32>,
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render_pipeline: wgpu::RenderPipeline,
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vertex_buffer: wgpu::Buffer,
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index_buffer: wgpu::Buffer,
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num_indices: u32,
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dirt_diffuse_bind_group: wgpu::BindGroup,
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camera: Camera,
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uniforms: Uniforms,
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uniform_buffer: wgpu::Buffer,
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uniform_bind_group: wgpu::BindGroup,
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}
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impl State {
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async fn new(window: &Window) -> Self {
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let size = window.inner_size();
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// The instance is a handle to our GPU
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// BackendBit::PRIMARY => Vulkan + Metal + DX12 + Browser WebGPU
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let instance = wgpu::Instance::new(wgpu::BackendBit::PRIMARY);
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let surface = unsafe { instance.create_surface(window) };
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let adapter = instance
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.request_adapter(&wgpu::RequestAdapterOptions {
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power_preference: wgpu::PowerPreference::HighPerformance,
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compatible_surface: Some(&surface),
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})
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.await
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.unwrap();
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let (device, queue) = adapter
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.request_device(
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&wgpu::DeviceDescriptor {
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label: None,
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features: wgpu::Features::empty(),
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limits: wgpu::Limits::default(),
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},
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None, // Trace path
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)
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.await
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.unwrap();
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let swap_chain_descriptor = wgpu::SwapChainDescriptor {
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usage: wgpu::TextureUsage::RENDER_ATTACHMENT,
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format: adapter.get_swap_chain_preferred_format(&surface).unwrap(),
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width: size.width,
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height: size.height,
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present_mode: wgpu::PresentMode::Immediate,
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};
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let swap_chain = device.create_swap_chain(&surface, &swap_chain_descriptor);
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let dirt_diffuse_texture = Texture::from_bytes(
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&device,
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&queue,
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include_bytes!("../assets/block/dirt.png"),
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"dirt_diffuse",
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)
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.unwrap();
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let texture_bind_group_layout =
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device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
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label: Some("exture_bind_group_layout"),
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entries: &[
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wgpu::BindGroupLayoutEntry {
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binding: 0,
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visibility: wgpu::ShaderStage::FRAGMENT,
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ty: wgpu::BindingType::Texture {
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multisampled: false,
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view_dimension: wgpu::TextureViewDimension::D2,
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sample_type: wgpu::TextureSampleType::Float { filterable: true },
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},
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count: None,
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},
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wgpu::BindGroupLayoutEntry {
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binding: 1,
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visibility: wgpu::ShaderStage::FRAGMENT,
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ty: wgpu::BindingType::Sampler {
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comparison: false,
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filtering: true,
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},
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count: None,
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},
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],
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});
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let dirt_diffuse_bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
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label: Some("dirt_diffuse_bind_group"),
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layout: &texture_bind_group_layout,
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entries: &[
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wgpu::BindGroupEntry {
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binding: 0,
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resource: wgpu::BindingResource::TextureView(&dirt_diffuse_texture.view),
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},
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wgpu::BindGroupEntry {
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binding: 1,
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resource: wgpu::BindingResource::Sampler(&dirt_diffuse_texture.sampler),
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},
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],
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});
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let shader = device.create_shader_module(&wgpu::ShaderModuleDescriptor {
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label: Some("Shader"),
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flags: wgpu::ShaderFlags::all(),
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source: wgpu::ShaderSource::Wgsl(include_str!("shader.wgsl").into()),
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});
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let camera = Camera {
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// position the camera one unit up and 2 units back
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// +z is out of the screen
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eye: (0.0, 1.0, 2.0).into(),
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// have it look at the origin
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target: (0.0, 0.0, 0.0).into(),
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// which way is "up"
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up: cgmath::Vector3::unit_y(),
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aspect: swap_chain_descriptor.width as f32 / swap_chain_descriptor.height as f32,
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fovy: 45.0,
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znear: 0.1,
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zfar: 100.0,
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};
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let mut uniforms = Uniforms::new();
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uniforms.update_view_proj(&camera);
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let uniform_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
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label: Some("Uniform Buffer"),
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contents: bytemuck::cast_slice(&[uniforms]),
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usage: wgpu::BufferUsage::UNIFORM | wgpu::BufferUsage::COPY_DST,
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});
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let uniform_bind_group_layout =
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device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
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entries: &[wgpu::BindGroupLayoutEntry {
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binding: 0,
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visibility: wgpu::ShaderStage::VERTEX,
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ty: wgpu::BindingType::Buffer {
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ty: wgpu::BufferBindingType::Uniform,
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has_dynamic_offset: false,
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min_binding_size: None,
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},
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count: None,
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}],
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label: Some("uniform_bind_group_layout"),
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});
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let render_pipeline_layout =
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device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
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label: Some("Render Pipeline Layout"),
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bind_group_layouts: &[&texture_bind_group_layout, &uniform_bind_group_layout],
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push_constant_ranges: &[],
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});
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let render_pipeline = device.create_render_pipeline(&wgpu::RenderPipelineDescriptor {
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label: Some("Render Pipeline"),
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layout: Some(&render_pipeline_layout),
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vertex: wgpu::VertexState {
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module: &shader,
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entry_point: "main",
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buffers: &[Vertex::desc()],
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},
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fragment: Some(wgpu::FragmentState {
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module: &shader,
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entry_point: "main",
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targets: &[wgpu::ColorTargetState {
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format: swap_chain_descriptor.format,
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blend: Some(wgpu::BlendState {
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color: wgpu::BlendComponent::REPLACE,
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alpha: wgpu::BlendComponent::REPLACE,
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}),
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write_mask: wgpu::ColorWrite::ALL,
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}],
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}),
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primitive: wgpu::PrimitiveState {
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topology: wgpu::PrimitiveTopology::TriangleList,
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strip_index_format: None,
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front_face: wgpu::FrontFace::Ccw,
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cull_mode: Some(wgpu::Face::Back),
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// Setting this to anything other than Fill requires Features::NON_FILL_POLYGON_MODE
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polygon_mode: wgpu::PolygonMode::Fill,
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// Requires Features::DEPTH_CLAMPING
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clamp_depth: false,
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// Requires Features::CONSERVATIVE_RASTERIZATION
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conservative: false,
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},
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depth_stencil: None,
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multisample: wgpu::MultisampleState {
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count: 1,
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mask: !0,
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alpha_to_coverage_enabled: false,
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},
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});
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let vertex_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
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label: Some("Vertex Buffer"),
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contents: bytemuck::cast_slice(VERTICES),
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usage: wgpu::BufferUsage::VERTEX,
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});
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let index_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
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label: Some("Index Buffer"),
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contents: bytemuck::cast_slice(INDICES),
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usage: wgpu::BufferUsage::INDEX,
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});
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let num_indices = INDICES.len() as u32;
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let uniform_bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
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layout: &uniform_bind_group_layout,
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entries: &[wgpu::BindGroupEntry {
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binding: 0,
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resource: uniform_buffer.as_entire_binding(),
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}],
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label: Some("uniform_bind_group"),
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});
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Self {
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surface,
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device,
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queue,
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sc_desc: swap_chain_descriptor,
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swap_chain,
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size,
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render_pipeline,
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vertex_buffer,
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index_buffer,
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num_indices,
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camera,
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uniforms,
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uniform_buffer,
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uniform_bind_group,
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dirt_diffuse_bind_group,
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}
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}
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fn resize(&mut self, new_size: winit::dpi::PhysicalSize<u32>) {
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println!("resizing to {:?}", new_size);
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self.size = new_size;
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self.sc_desc.width = new_size.width;
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self.sc_desc.height = new_size.height;
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self.swap_chain = self.device.create_swap_chain(&self.surface, &self.sc_desc);
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}
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#[allow(unused_variables)]
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fn input(&mut self, event: &WindowEvent) -> bool {
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false
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}
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fn update(&mut self) {}
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fn render(&mut self) -> Result<(), wgpu::SwapChainError> {
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let frame = self.swap_chain.get_current_frame()?.output;
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let mut encoder = self
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.device
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.create_command_encoder(&wgpu::CommandEncoderDescriptor {
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label: Some("Render Encoder"),
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});
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{
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let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
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label: Some("Render Pass"),
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color_attachments: &[wgpu::RenderPassColorAttachment {
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view: &frame.view,
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resolve_target: None,
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ops: wgpu::Operations {
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load: wgpu::LoadOp::Clear(wgpu::Color::BLACK),
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store: true,
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},
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}],
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depth_stencil_attachment: None,
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});
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render_pass.set_pipeline(&self.render_pipeline);
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render_pass.set_bind_group(0, &self.dirt_diffuse_bind_group, &[]);
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render_pass.set_bind_group(1, &self.uniform_bind_group, &[]);
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render_pass.set_vertex_buffer(0, self.vertex_buffer.slice(..));
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|
|
render_pass.set_index_buffer(self.index_buffer.slice(..), wgpu::IndexFormat::Uint16);
|
||
|
|
render_pass.draw_indexed(0..self.num_indices, 0, 0..1);
|
||
|
|
}
|
||
|
|
|
||
|
|
self.queue.submit(iter::once(encoder.finish()));
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
env_logger::init();
|
||
|
|
let event_loop = EventLoop::new();
|
||
|
|
let window = WindowBuilder::new()
|
||
|
|
.with_title("\u{1f980}\u{1f980}\u{1f980}\u{1f980}\u{1f980}")
|
||
|
|
.build(&event_loop)
|
||
|
|
.unwrap();
|
||
|
|
|
||
|
|
use futures::executor::block_on;
|
||
|
|
|
||
|
|
// Since main can't be async, we're going to need to block
|
||
|
|
let mut state = block_on(State::new(&window));
|
||
|
|
|
||
|
|
let mut frames = 0;
|
||
|
|
let mut instant = Instant::now();
|
||
|
|
|
||
|
|
event_loop.run(move |event, _, control_flow| {
|
||
|
|
match event {
|
||
|
|
Event::WindowEvent {
|
||
|
|
ref event,
|
||
|
|
window_id,
|
||
|
|
} if window_id == window.id() => {
|
||
|
|
if !state.input(event) {
|
||
|
|
match event {
|
||
|
|
WindowEvent::CloseRequested => *control_flow = ControlFlow::Exit,
|
||
|
|
WindowEvent::KeyboardInput { input, .. } => match 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(_) => {
|
||
|
|
frames += 1;
|
||
|
|
if frames % 1000 == 0 {
|
||
|
|
let frametime = instant.elapsed() / 1000;
|
||
|
|
let fps = 1_000_000 / frametime.as_micros();
|
||
|
|
println!("{:?} - {} fps", frametime, fps);
|
||
|
|
instant = Instant::now();
|
||
|
|
}
|
||
|
|
|
||
|
|
state.update();
|
||
|
|
match state.render() {
|
||
|
|
Ok(_) => {}
|
||
|
|
// Recreate the swap_chain if lost
|
||
|
|
Err(wgpu::SwapChainError::Lost) => state.resize(state.size),
|
||
|
|
// The system is out of memory, we should probably quit
|
||
|
|
Err(wgpu::SwapChainError::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();
|
||
|
|
}
|
||
|
|
_ => {}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|