1 files changed, 60 insertions, 0 deletions
diff --git a/dom/webgpu/ExternalTexture.h b/dom/webgpu/ExternalTexture.h
new file mode 100644
index 0000000000..2c42d478ae
--- /dev/null
+++ b/dom/webgpu/ExternalTexture.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 ExternalTexture_H_
+#define ExternalTexture_H_
+
+#include "mozilla/gfx/Point.h"
+#include "mozilla/layers/LayersSurfaces.h"
+#include "mozilla/webgpu/ffi/wgpu.h"
+
+namespace mozilla {
+
+namespace ipc {
+class Shmem;
+}
+
+namespace webgpu {
+
+// A texture that can be used by the WebGPU implementation but is created and
+// owned by Gecko
+class ExternalTexture {
+ public:
+  static UniquePtr<ExternalTexture> Create(
+      const uint32_t aWidth, const uint32_t aHeight,
+      const struct ffi::WGPUTextureFormat aFormat,
+      const ffi::WGPUTextureUsages aUsage);
+
+  ExternalTexture(const uint32_t aWidth, const uint32_t aHeight,
+                  const struct ffi::WGPUTextureFormat aFormat,
+                  const ffi::WGPUTextureUsages aUsage);
+  virtual ~ExternalTexture();
+
+  virtual void* GetExternalTextureHandle() { return nullptr; }
+
+  virtual Maybe<layers::SurfaceDescriptor> ToSurfaceDescriptor(
+      Maybe<gfx::FenceInfo>& aFenceInfo) = 0;
+
+  virtual void GetSnapshot(const ipc::Shmem& aDestShmem,
+                           const gfx::IntSize& aSize) {}
+
+  gfx::IntSize GetSize() { return gfx::IntSize(mWidth, mHeight); }
+
+  void SetSubmissionIndex(uint64_t aSubmissionIndex);
+  uint64_t GetSubmissionIndex() const { return mSubmissionIndex; }
+
+  const uint32_t mWidth;
+  const uint32_t mHeight;
+  const struct ffi::WGPUTextureFormat mFormat;
+  const ffi::WGPUTextureUsages mUsage;
+
+ protected:
+  uint64_t mSubmissionIndex = 0;
+};
+
+}  // namespace webgpu
+}  // namespace mozilla
+
+#endif  // GPU_ExternalTexture_H_