1 files changed, 48 insertions, 0 deletions
diff --git a/third_party/rust/wgpu-hal/src/dx11/instance.rs b/third_party/rust/wgpu-hal/src/dx11/instance.rs
new file mode 100644
index 0000000000..104ba9e045
--- /dev/null
+++ b/third_party/rust/wgpu-hal/src/dx11/instance.rs
@@ -0,0 +1,48 @@
+use crate::auxil;
+
+impl crate::Instance<super::Api> for super::Instance {
+    unsafe fn init(desc: &crate::InstanceDescriptor) -> Result<Self, crate::InstanceError> {
+        let enable_dx11 = match std::env::var("WGPU_UNSTABLE_DX11_BACKEND") {
+            Ok(string) => string == "1" || string == "true",
+            Err(_) => false,
+        };
+
+        if !enable_dx11 {
+            return Err(crate::InstanceError);
+        }
+
+        let lib_d3d11 = super::library::D3D11Lib::new().ok_or(crate::InstanceError)?;
+
+        let (lib_dxgi, factory) = auxil::dxgi::factory::create_factory(
+            auxil::dxgi::factory::DxgiFactoryType::Factory1,
+            desc.flags,
+        )?;
+
+        Ok(super::Instance {
+            lib_d3d11,
+            lib_dxgi,
+            factory,
+        })
+    }
+
+    unsafe fn create_surface(
+        &self,
+        display_handle: raw_window_handle::RawDisplayHandle,
+        window_handle: raw_window_handle::RawWindowHandle,
+    ) -> Result<super::Surface, crate::InstanceError> {
+        todo!()
+    }
+
+    unsafe fn destroy_surface(&self, surface: super::Surface) {
+        todo!()
+    }
+
+    unsafe fn enumerate_adapters(&self) -> Vec<crate::ExposedAdapter<super::Api>> {
+        let adapters = auxil::dxgi::factory::enumerate_adapters(self.factory);
+
+        adapters
+            .into_iter()
+            .filter_map(|adapter| super::Adapter::expose(&self.lib_d3d11, adapter))
+            .collect()
+    }
+}