pebble/assets/
asset_plugin.rs

1use crate::{
2    app::SystemStage,
3    assets::{
4        dependent_asset_plugin::Dependencies,
5        storage::{Assets, GPUAssets},
6        upload::DeviceUpload,
7    },
8    plugin::Plugin,
9    rendering::backend::Backend,
10    resources::Resources,
11    system::{Res, ResMut},
12};
13
14pub struct DeviceAssetPlugin<B: Backend, T: DeviceUpload<B>> {
15    _marker: std::marker::PhantomData<(B, T)>,
16}
17
18impl<B: Backend, T: DeviceUpload<B>> DeviceAssetPlugin<B, T> {
19    pub fn new() -> Self {
20        Self {
21            _marker: std::marker::PhantomData,
22        }
23    }
24}
25
26impl<B, T> Plugin for DeviceAssetPlugin<B, T>
27where
28    B: Backend,
29    T: DeviceUpload<B>,
30{
31    fn build(&self, app: &mut crate::prelude::App) {
32        app.try_insert_resource(Assets::<T::Source>::new());
33        app.try_insert_resource(GPUAssets::<T>::new());
34        app.add_system(SystemStage::AssetSync, sync_device_assets::<B, T>);
35    }
36}
37
38fn sync_device_assets<B, T>(
39    mut cpu: ResMut<Assets<T::Source>>,
40    mut gpu: ResMut<GPUAssets<T>>,
41    backend: Option<Res<B>>,
42    world: &hecs::World,
43    resources: &Resources,
44) where
45    B: Backend,
46    T: DeviceUpload<B>,
47{
48    let Some(device) = backend else {
49        log_waiting::<B, T>(&cpu, "backend");
50        return;
51    };
52
53    let Some(deps) = T::Deps::try_gather(world, resources) else {
54        log_waiting::<B, T>(&cpu, "dependencies");
55        return;
56    };
57
58    for handle in cpu.take_dirty() {
59        if let Some(source) = cpu.get(handle) {
60            gpu.insert(handle, T::upload(source, &device, &deps));
61        }
62    }
63}
64
65fn log_waiting<B, T>(cpu: &Assets<T::Source>, what: &str)
66where
67    B: Backend,
68    T: DeviceUpload<B>,
69{
70    if !cpu.dirty_is_empty() {
71        tracing::trace!(
72            "{}: waiting on {what}, {} pending",
73            std::any::type_name::<T>(),
74            cpu.dirty_len()
75        );
76    }
77}
pebble/assets/asset_plugin.rs

pebble/assets/
asset_plugin.rs
