1 files changed, 43 insertions, 0 deletions
diff --git a/third_party/rust/d3d12/src/debug.rs b/third_party/rust/d3d12/src/debug.rs
new file mode 100644
index 0000000000..d7768191b7
--- /dev/null
+++ b/third_party/rust/d3d12/src/debug.rs
@@ -0,0 +1,43 @@
+use crate::com::WeakPtr;
+use winapi::um::d3d12sdklayers;
+#[cfg(any(feature = "libloading", feature = "implicit-link"))]
+use winapi::Interface as _;
+
+pub type Debug = WeakPtr<d3d12sdklayers::ID3D12Debug>;
+
+#[cfg(feature = "libloading")]
+impl crate::D3D12Lib {
+    pub fn get_debug_interface(&self) -> Result<crate::D3DResult<Debug>, libloading::Error> {
+        type Fun = extern "system" fn(
+            winapi::shared::guiddef::REFIID,
+            *mut *mut winapi::ctypes::c_void,
+        ) -> crate::HRESULT;
+
+        let mut debug = Debug::null();
+        let hr = unsafe {
+            let func: libloading::Symbol<Fun> = self.lib.get(b"D3D12GetDebugInterface")?;
+            func(&d3d12sdklayers::ID3D12Debug::uuidof(), debug.mut_void())
+        };
+
+        Ok((debug, hr))
+    }
+}
+
+impl Debug {
+    #[cfg(feature = "implicit-link")]
+    pub fn get_interface() -> crate::D3DResult<Self> {
+        let mut debug = Debug::null();
+        let hr = unsafe {
+            winapi::um::d3d12::D3D12GetDebugInterface(
+                &d3d12sdklayers::ID3D12Debug::uuidof(),
+                debug.mut_void(),
+            )
+        };
+
+        (debug, hr)
+    }
+
+    pub fn enable_layer(&self) {
+        unsafe { self.EnableDebugLayer() }
+    }
+}