pebble/wgpu/
mesh.rs

1use crate::{
2    app::App,
3    assets::{plugin::AssetPlugin, upload::Asset},
4    ecs::plugin::Plugin,
5    wgpu::backend::WGPUBackend,
6};
7
8pub struct Mesh {
9    pub vertices: Vec<u8>,
10    pub indices: Vec<u32>,
11}
12
13pub struct GPUMesh {
14    pub vertex_buffer: wgpu::Buffer,
15    pub index_buffer: wgpu::Buffer,
16    pub index_count: u32,
17}
18
19impl Asset<WGPUBackend> for GPUMesh {
20    type Source = Mesh;
21    type Deps<'a> = ();
22
23    fn upload<'a>(source: &Mesh, backend: &WGPUBackend, _deps: &()) -> Option<Self> {
24        use wgpu::util::DeviceExt;
25        let vertex_buffer = backend
26            .device
27            .create_buffer_init(&wgpu::util::BufferInitDescriptor {
28                label: Some("Mesh Vertex Buffer"),
29                contents: &source.vertices,
30                usage: wgpu::BufferUsages::VERTEX,
31            });
32        let index_buffer = backend
33            .device
34            .create_buffer_init(&wgpu::util::BufferInitDescriptor {
35                label: Some("Mesh Index Buffer"),
36                contents: bytemuck::cast_slice(&source.indices),
37                usage: wgpu::BufferUsages::INDEX,
38            });
39        Some(Self {
40            vertex_buffer,
41            index_buffer,
42            index_count: source.indices.len() as u32,
43        })
44    }
45}
46
47pub struct MeshPlugin;
48impl MeshPlugin {
49    pub fn new() -> Self {
50        Self
51    }
52}
53impl Plugin for MeshPlugin {
54    fn build(&self, app: &mut App) {
55        app.add_plugin(AssetPlugin::<WGPUBackend, GPUMesh>::new());
56    }
57}
pebble/wgpu/mesh.rs

pebble/wgpu/
mesh.rs
