feat(renderer): rewrote the core of the Renderer2D as a temporary module

crates/comet_renderer/src/lib.rs

@@ -1,6 +1,7 @@
 mod camera;
+mod draw_info;
+mod render_group;
+mod render_pass;
 pub mod renderer;
 pub mod renderer2d;
-mod render_pass;
+pub mod renderer2d_;
-mod render_group;
-mod draw_info;

crates/comet_renderer/src/renderer2d_/base.wgsl

@@ -0,0 +1,25 @@
+struct VertexInput {
+    @location(0) position: vec3<f32>,
+    @location(1) tex_coords: vec2<f32>,
+    @location(2) color: vec4<f32>,
+}
+
+struct VertexOutput {
+    @builtin(position) clip_position: vec4<f32>,
+    @location(0) tex_coords: vec2<f32>,
+    @location(1) color: vec4<f32>,
+}
+
+@vertex
+fn vs_main(input: VertexInput) -> VertexOutput {
+    var out: VertexOutput;
+    out.clip_position = vec4(input.position, 1.0);
+    out.tex_coords = input.tex_coords;
+    out.color = input.color;
+    return out;
+}
+
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    return in.color;
+}

crates/comet_renderer/src/renderer2d_/mod.rs

@@ -0,0 +1,188 @@
+mod render_context;
+
+use render_context::*;
+
+use crate::renderer::Renderer;
+use comet_colors::Color;
+use comet_resources::{graphic_resource_manager::GraphicResourceManager, Vertex};
+use std::iter;
+use std::sync::Arc;
+use wgpu::util::DeviceExt;
+use winit::dpi::PhysicalSize;
+use winit::window::Window;
+
+pub struct Renderer2D_<'a> {
+    render_context: RenderContext<'a>,
+    universal_render_pipeline: wgpu::RenderPipeline,
+    graphic_resource_manager: GraphicResourceManager,
+    vertex_vec: Vec<Vertex>,
+    vertex_buffer: wgpu::Buffer,
+    index_vec: Vec<u32>,
+    index_buffer: wgpu::Buffer,
+    num_indices: u32,
+    clear_color: wgpu::Color,
+}
+
+impl<'a> Renderer2D_<'a> {
+    pub fn new(window: Arc<Window>, clear_color: Option<impl Color>) -> Renderer2D_<'a> {
+        let render_context = RenderContext::new(window.clone(), clear_color);
+        let graphic_resource_manager = GraphicResourceManager::new();
+        let clear_color = match clear_color {
+            Some(color) => color.to_wgpu(),
+            None => wgpu::Color {
+                r: 0.0,
+                g: 0.0,
+                b: 0.0,
+                a: 1.0,
+            },
+        };
+
+        let universal_renderpipeline_module =
+            render_context
+                .device
+                .create_shader_module(wgpu::ShaderModuleDescriptor {
+                    label: Some("Universal Render Pipeline Shader Module"),
+                    source: wgpu::ShaderSource::Wgsl(include_str!("base.wgsl").into()),
+                });
+
+        let universal_renderpipeline_layout =
+            render_context
+                .device
+                .create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
+                    label: Some("Universal Render Pipeline Layout"),
+                    bind_group_layouts: &[],
+                    push_constant_ranges: &[],
+                });
+
+        let universal_render_pipeline =
+            render_context
+                .device
+                .create_render_pipeline(&wgpu::RenderPipelineDescriptor {
+                    label: Some("Universal Render Pipeline"),
+                    layout: Some(&universal_renderpipeline_layout),
+                    vertex: wgpu::VertexState {
+                        module: &universal_renderpipeline_module,
+                        entry_point: "vs_main",
+                        buffers: &[Vertex::desc()],
+                        compilation_options: Default::default(),
+                    },
+                    fragment: Some(wgpu::FragmentState {
+                        module: &universal_renderpipeline_module,
+                        entry_point: "fs_main",
+                        targets: &[Some(wgpu::ColorTargetState {
+                            format: render_context.config.format,
+                            blend: Some(wgpu::BlendState::ALPHA_BLENDING),
+                            write_mask: wgpu::ColorWrites::ALL,
+                        })],
+                        compilation_options: Default::default(),
+                    }),
+                    primitive: wgpu::PrimitiveState {
+                        topology: wgpu::PrimitiveTopology::TriangleList,
+                        strip_index_format: None,
+                        front_face: wgpu::FrontFace::Ccw,
+                        cull_mode: Some(wgpu::Face::Back),
+                        polygon_mode: wgpu::PolygonMode::Fill,
+                        unclipped_depth: false,
+                        conservative: false,
+                    },
+                    depth_stencil: None,
+                    multisample: wgpu::MultisampleState {
+                        count: 1,
+                        mask: !0,
+                        alpha_to_coverage_enabled: false,
+                    },
+                    multiview: None,
+                    cache: None,
+                });
+
+        let vertex_buffer =
+            render_context
+                .device
+                .create_buffer_init(&wgpu::util::BufferInitDescriptor {
+                    label: Some("Vertex Buffer"),
+                    contents: &[],
+                    usage: wgpu::BufferUsages::VERTEX | wgpu::BufferUsages::COPY_DST,
+                });
+
+        let index_buffer =
+            render_context
+                .device
+                .create_buffer_init(&wgpu::util::BufferInitDescriptor {
+                    label: Some("Index Buffer"),
+                    contents: &[],
+                    usage: wgpu::BufferUsages::INDEX | wgpu::BufferUsages::COPY_DST,
+                });
+
+        Self {
+            render_context,
+            universal_render_pipeline,
+            graphic_resource_manager,
+            vertex_buffer,
+            vertex_vec: vec![],
+            index_buffer,
+            index_vec: vec![],
+            num_indices: 0,
+            clear_color,
+        }
+    }
+}
+
+impl<'a> Renderer for Renderer2D_<'a> {
+    fn new(window: Arc<Window>, clear_color: Option<impl Color>) -> Renderer2D_<'a> {
+        Self::new(window, clear_color)
+    }
+
+    fn size(&self) -> PhysicalSize<u32> {
+        self.render_context.size()
+    }
+
+    fn resize(&mut self, new_size: PhysicalSize<u32>) {
+        self.render_context.resize(new_size)
+    }
+
+    fn update(&mut self) -> f32 {
+        self.render_context.update()
+    }
+
+    fn render(&mut self) -> Result<(), wgpu::SurfaceError> {
+        let output = self.render_context.surface.get_current_texture()?;
+        let output_view = output
+            .texture
+            .create_view(&wgpu::TextureViewDescriptor::default());
+
+        let mut encoder =
+            self.render_context
+                .device
+                .create_command_encoder(&wgpu::CommandEncoderDescriptor {
+                    label: Some("Render Encoder"),
+                });
+
+        {
+            let mut render_pass = encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
+                label: Some("Universal Render Pass"),
+                color_attachments: &[Some(wgpu::RenderPassColorAttachment {
+                    view: &output_view,
+                    resolve_target: None,
+                    ops: wgpu::Operations {
+                        load: wgpu::LoadOp::Clear(self.clear_color),
+                        store: wgpu::StoreOp::Store,
+                    },
+                })],
+                depth_stencil_attachment: None,
+                occlusion_query_set: None,
+                timestamp_writes: None,
+            });
+
+            render_pass.set_pipeline(&self.universal_render_pipeline);
+            render_pass.set_vertex_buffer(0, self.vertex_buffer.slice(..));
+            render_pass.set_index_buffer(self.index_buffer.slice(..), wgpu::IndexFormat::Uint32);
+            render_pass.draw_indexed(0..self.num_indices, 0, 0..1);
+        }
+
+        self.render_context
+            .queue
+            .submit(iter::once(encoder.finish()));
+        output.present();
+        Ok(())
+    }
+}

crates/comet_renderer/src/renderer2d_/render_context.rs

@@ -0,0 +1,96 @@
+use comet_colors::Color;
+use std::sync::Arc;
+use std::time::Instant;
+use winit::dpi::PhysicalSize;
+use winit::window::Window;
+
+pub struct RenderContext<'a> {
+    pub surface: wgpu::Surface<'a>,
+    pub device: wgpu::Device,
+    pub queue: wgpu::Queue,
+    pub config: wgpu::SurfaceConfiguration,
+    pub size: PhysicalSize<u32>,
+    pub last_frame_time: Instant,
+    pub delta_time: f32,
+}
+
+impl<'a> RenderContext<'a> {
+    pub fn new(window: Arc<Window>, clear_color: Option<impl Color>) -> RenderContext<'a> {
+        let size = window.inner_size();
+
+        let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
+            backends: wgpu::Backends::PRIMARY,
+            ..Default::default()
+        });
+
+        let surface = instance.create_surface(window).unwrap();
+
+        let adapter = pollster::block_on(instance.request_adapter(&wgpu::RequestAdapterOptions {
+            power_preference: wgpu::PowerPreference::default(),
+            compatible_surface: Some(&surface),
+            force_fallback_adapter: false,
+        }))
+        .unwrap();
+
+        let (device, queue) = pollster::block_on(adapter.request_device(
+            &wgpu::DeviceDescriptor {
+                label: None,
+                required_features: wgpu::Features::empty(),
+                required_limits: wgpu::Limits::default(),
+                memory_hints: Default::default(),
+            },
+            None,
+        ))
+        .unwrap();
+
+        let surface_caps = surface.get_capabilities(&adapter);
+        let surface_format = surface_caps
+            .formats
+            .iter()
+            .copied()
+            .find(|f| f.is_srgb())
+            .unwrap_or(surface_caps.formats[0]);
+
+        let config = wgpu::SurfaceConfiguration {
+            usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
+            format: surface_format,
+            width: size.width,
+            height: size.height,
+            present_mode: surface_caps.present_modes[0],
+            alpha_mode: surface_caps.alpha_modes[0],
+            view_formats: vec![],
+            desired_maximum_frame_latency: 2,
+        };
+
+        Self {
+            surface,
+            device,
+            queue,
+            config,
+            size,
+            last_frame_time: Instant::now(),
+            delta_time: 0.0,
+        }
+    }
+
+    pub fn size(&self) -> PhysicalSize<u32> {
+        self.size
+    }
+
+    pub fn resize(&mut self, new_size: 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 update(&mut self) -> f32 {
+        let now = Instant::now();
+        let delta_time = now.duration_since(self.last_frame_time).as_millis() as f32 / 1000.0;
+        self.last_frame_time = now;
+        self.delta_time = delta_time;
+        delta_time
+    }
+}