update synchronization, fix last errors in wgc

wgpu-hal/Cargo.toml

@@ -15,6 +15,7 @@ license = "MPL-2.0"
 
 [dependencies]
 bitflags = "1.0"
+raw-window-handle = "0.3"
 smallvec = "1"
 thiserror = "1"
 wgt = { package = "wgpu-types", path = "../wgpu-types" }

wgpu-hal/src/empty.rs

@@ -37,6 +37,12 @@ impl crate::Api for Api {
 }
 
 impl crate::Instance<Api> for Context {
+    unsafe fn create_surface(
+        &self,
+        rwh: &impl raw_window_handle::HasRawWindowHandle,
+    ) -> Result<Context, crate::UnsupportedWindow> {
+        Ok(Context)
+    }
     unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<Api>> {
         Vec::new()
     }
@@ -266,10 +272,10 @@ impl crate::CommandBuffer<Api> for Encoder {
     ) {
     }
 
+    // render
+
     unsafe fn begin_render_pass(&mut self, desc: &crate::RenderPassDescriptor<Api>) {}
     unsafe fn end_render_pass(&mut self) {}
-    unsafe fn begin_compute_pass(&mut self) {}
-    unsafe fn end_compute_pass(&mut self) {}
 
     unsafe fn set_bind_group(
         &mut self,
@@ -357,6 +363,11 @@ impl crate::CommandBuffer<Api> for Encoder {
     ) {
     }
 
+    // compute
+
+    unsafe fn begin_compute_pass(&mut self) {}
+    unsafe fn end_compute_pass(&mut self) {}
+
     unsafe fn set_compute_pipeline(&mut self, pipeline: &Resource) {}
 
     unsafe fn dispatch(&mut self, count: [u32; 3]) {}

wgpu-hal/src/lib.rs

@@ -96,6 +96,10 @@ pub enum SurfaceError {
     Other(&'static str),
 }
 
+#[derive(Clone, Debug, PartialEq, Error)]
+#[error("Window handle is not supported")]
+pub struct UnsupportedWindow;
+
 pub trait Api: Clone + Sized {
     type Instance: Instance<Self>;
     type Surface: Surface<Self>;
@@ -121,6 +125,10 @@ pub trait Api: Clone + Sized {
 }
 
 pub trait Instance<A: Api> {
+    unsafe fn create_surface(
+        &self,
+        rwh: &impl raw_window_handle::HasRawWindowHandle,
+    ) -> Result<A::Surface, UnsupportedWindow>;
     unsafe fn enumerate_adapters(&self) -> Vec<ExposedAdapter<A>>;
 }