1 files changed, 60 insertions, 0 deletions
diff --git a/dom/webgpu/Instance.h b/dom/webgpu/Instance.h
new file mode 100644
index 0000000000..7849c34e64
--- /dev/null
+++ b/dom/webgpu/Instance.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GPU_INSTANCE_H_
+#define GPU_INSTANCE_H_
+
+#include "mozilla/AlreadyAddRefed.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/WebGPUBinding.h"
+#include "mozilla/layers/BuildConstants.h"
+#include "nsCOMPtr.h"
+#include "ObjectModel.h"
+
+namespace mozilla {
+class ErrorResult;
+namespace dom {
+class Promise;
+struct GPURequestAdapterOptions;
+}  // namespace dom
+
+namespace webgpu {
+class Adapter;
+class GPUAdapter;
+class WebGPUChild;
+
+class Instance final : public nsWrapperCache {
+ public:
+  GPU_DECL_CYCLE_COLLECTION(Instance)
+  GPU_DECL_JS_WRAP(Instance)
+
+  nsIGlobalObject* GetParentObject() const { return mOwner; }
+
+  static already_AddRefed<Instance> Create(nsIGlobalObject* aOwner);
+
+  already_AddRefed<dom::Promise> RequestAdapter(
+      const dom::GPURequestAdapterOptions& aOptions, ErrorResult& aRv);
+
+  dom::GPUTextureFormat GetPreferredCanvasFormat() const {
+    if (kIsAndroid) {
+      return dom::GPUTextureFormat::Rgba8unorm;
+    }
+    return dom::GPUTextureFormat::Bgra8unorm;
+  };
+
+ private:
+  explicit Instance(nsIGlobalObject* aOwner);
+  virtual ~Instance();
+  void Cleanup();
+
+  nsCOMPtr<nsIGlobalObject> mOwner;
+
+ public:
+};
+
+}  // namespace webgpu
+}  // namespace mozilla
+
+#endif  // GPU_INSTANCE_H_