First bits of wgpu-remote

Author: kvark

Cargo.toml

@@ -18,6 +18,7 @@ crate-type = ["lib", "cdylib", "staticlib"]
 [features]
 default = []
 local = ["winit", "gfx-backend-empty/winit"]
+remote = ["serde"]
 metal-auto-capture = ["gfx-backend-metal/auto-capture"]
 
 [dependencies]
@@ -32,4 +33,5 @@ gfx-backend-dx11 = { version = "0.1.0", optional = true }
 gfx-backend-dx12 = { version = "0.1.0", optional = true }
 gfx-backend-metal = { version = "0.1.0", optional = true }
 #rendy-memory = { git = "https://github.com/rustgd/rendy", rev = "ce7dd7f", features = ["gfx-hal"] }
+serde = { version = "1.0", features = ["serde_derive"], optional = true }
 winit = { version = "0.18", optional = true }

src/hub.rs

@@ -107,6 +107,14 @@ impl<T> Registry<T> {
     }
 }
 
+#[cfg(feature = "remote")]
+impl<T> Registry<T> {
+    pub fn register(&self, id: Id, value: T) {
+        let old = self.data.write().map.insert(id, value);
+        assert!(old.is_none());
+    }
+}
+
 #[derive(Default)]
 pub struct Hub {
     pub(crate) instances: Arc<Registry<InstanceHandle>>,

src/instance.rs

@@ -7,28 +7,35 @@ use crate::{
 #[cfg(feature = "local")]
 use crate::{DeviceId, SurfaceId};
 
+#[cfg(feature = "remote")]
+use serde::{Serialize, Deserialize};
+
 use hal::{self, Instance as _Instance, PhysicalDevice as _PhysicalDevice};
 
 
 #[repr(C)]
 #[derive(Copy, Clone, Debug, Hash, Eq, PartialEq)]
+#[cfg_attr(feature = "remote", derive(Serialize, Deserialize))]
 pub enum PowerPreference {
     Default = 0,
     LowPower = 1,
     HighPerformance = 2,
 }
 
 #[repr(C)]
+#[cfg_attr(feature = "remote", derive(Clone, Serialize, Deserialize))]
 pub struct AdapterDescriptor {
     pub power_preference: PowerPreference,
 }
 
 #[repr(C)]
+#[cfg_attr(feature = "remote", derive(Clone, Serialize, Deserialize))]
 pub struct Extensions {
     pub anisotropic_filtering: bool,
 }
 
 #[repr(C)]
+#[cfg_attr(feature = "remote", derive(Clone, Serialize, Deserialize))]
 pub struct DeviceDescriptor {
     pub extensions: Extensions,
 }

src/lib.rs

@@ -39,7 +39,7 @@ pub use self::pipeline::*;
 pub use self::resource::*;
 pub use self::swap_chain::*;
 #[cfg(not(feature = "local"))]
-pub use self::hub::{Id, IdentityManager};
+pub use self::hub::{HUB, Id, IdentityManager, Registry};
 
 use std::ptr;
 use std::sync::atomic::{AtomicUsize, Ordering};