runmat_plot/
context.rs

1#[cfg(not(target_arch = "wasm32"))]
2use once_cell::sync::OnceCell;
3#[cfg(target_arch = "wasm32")]
4use once_cell::unsync::OnceCell;
5#[cfg(target_arch = "wasm32")]
6use runmat_thread_local::runmat_thread_local;
7#[cfg(target_arch = "wasm32")]
8use std::cell::RefCell;
9use std::sync::Arc;
10
11/// Shared WGPU instance/device/queue triple exported by a host acceleration provider.
12#[derive(Clone)]
13pub struct SharedWgpuContext {
14    pub instance: Arc<wgpu::Instance>,
15    pub device: Arc<wgpu::Device>,
16    pub queue: Arc<wgpu::Queue>,
17    pub adapter: Arc<wgpu::Adapter>,
18    pub adapter_info: wgpu::AdapterInfo,
19    pub limits: wgpu::Limits,
20    pub features: wgpu::Features,
21}
22
23#[cfg(not(target_arch = "wasm32"))]
24static GLOBAL_CONTEXT: OnceCell<SharedWgpuContext> = OnceCell::new();
25
26#[cfg(target_arch = "wasm32")]
27runmat_thread_local! {
28    static GLOBAL_CONTEXT: RefCell<OnceCell<SharedWgpuContext>> = RefCell::new(OnceCell::new());
29}
30
31/// Install a shared context that other subsystems (GUI, exporters, web) can reuse.
32pub fn install_shared_wgpu_context(context: SharedWgpuContext) {
33    #[cfg(not(target_arch = "wasm32"))]
34    let _ = GLOBAL_CONTEXT.set(context);
35    #[cfg(target_arch = "wasm32")]
36    GLOBAL_CONTEXT.with(|cell| {
37        let _ = cell.borrow_mut().set(context);
38    });
39}
40
41/// Retrieve the shared context if one has been installed.
42pub fn shared_wgpu_context() -> Option<SharedWgpuContext> {
43    #[cfg(not(target_arch = "wasm32"))]
44    {
45        GLOBAL_CONTEXT.get().cloned()
46    }
47    #[cfg(target_arch = "wasm32")]
48    {
49        GLOBAL_CONTEXT.with(|cell| cell.borrow().get().cloned())
50    }
51}
runmat_plot/context.rs

runmat_plot/
context.rs
