From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 16:29:10 +0200
Subject: Adding upstream version 86.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/webgpu/CanvasContext.h | 114 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 dom/webgpu/CanvasContext.h

(limited to 'dom/webgpu/CanvasContext.h')

diff --git a/dom/webgpu/CanvasContext.h b/dom/webgpu/CanvasContext.h
new file mode 100644
index 0000000000..86f3b46c82
--- /dev/null
+++ b/dom/webgpu/CanvasContext.h
@@ -0,0 +1,114 @@
+/* -*- 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_CanvasContext_H_
+#define GPU_CanvasContext_H_
+
+#include "nsICanvasRenderingContextInternal.h"
+#include "nsWrapperCache.h"
+#include "ObjectModel.h"
+#include "SwapChain.h"
+#include "mozilla/webrender/WebRenderAPI.h"
+
+namespace mozilla {
+namespace dom {
+class Promise;
+}  // namespace dom
+namespace layers {
+class WebRenderLocalCanvasData;
+};
+namespace webgpu {
+class Device;
+class SwapChain;
+class Texture;
+
+class CanvasContext final : public nsICanvasRenderingContextInternal,
+                            public nsWrapperCache {
+ private:
+  virtual ~CanvasContext();
+  void Cleanup();
+
+ public:
+  // nsISupports interface + CC
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(CanvasContext)
+
+  CanvasContext();
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  void RemoveSwapChain();
+
+  Maybe<wr::ImageKey> GetImageKey() const;
+  wr::ImageKey CreateImageKey(layers::RenderRootStateManager* aManager);
+  bool UpdateWebRenderLocalCanvasData(
+      layers::WebRenderLocalCanvasData* aCanvasData);
+
+  const wr::ExternalImageId mExternalImageId;
+
+ public:  // nsICanvasRenderingContextInternal
+  int32_t GetWidth() override { return mWidth; }
+  int32_t GetHeight() override { return mHeight; }
+
+  NS_IMETHOD SetDimensions(int32_t aWidth, int32_t aHeight) override {
+    mWidth = aWidth;
+    mHeight = aHeight;
+    return NS_OK;
+  }
+  NS_IMETHOD InitializeWithDrawTarget(
+      nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override {
+    return NS_OK;
+  }
+
+  mozilla::UniquePtr<uint8_t[]> GetImageBuffer(int32_t* aFormat) override {
+    MOZ_CRASH("todo");
+  }
+  NS_IMETHOD GetInputStream(const char* aMimeType,
+                            const nsAString& aEncoderOptions,
+                            nsIInputStream** aStream) override {
+    *aStream = nullptr;
+    return NS_OK;
+  }
+
+  already_AddRefed<mozilla::gfx::SourceSurface> GetSurfaceSnapshot(
+      gfxAlphaType* aOutAlphaType) override {
+    return nullptr;
+  }
+
+  void SetOpaqueValueFromOpaqueAttr(bool aOpaqueAttrValue) override {}
+  bool GetIsOpaque() override { return true; }
+  NS_IMETHOD Reset() override { return NS_OK; }
+  already_AddRefed<Layer> GetCanvasLayer(nsDisplayListBuilder* aBuilder,
+                                         Layer* aOldLayer,
+                                         LayerManager* aManager) override;
+  bool UpdateWebRenderCanvasData(nsDisplayListBuilder* aBuilder,
+                                 WebRenderCanvasData* aCanvasData) override;
+  void MarkContextClean() override {}
+
+  NS_IMETHOD Redraw(const gfxRect& aDirty) override { return NS_OK; }
+  NS_IMETHOD SetIsIPC(bool aIsIPC) override { return NS_OK; }
+
+  void DidRefresh() override {}
+
+  void MarkContextCleanForFrameCapture() override {}
+  bool IsContextCleanForFrameCapture() override { return false; }
+
+ public:
+  RefPtr<SwapChain> ConfigureSwapChain(const dom::GPUSwapChainDescriptor& aDesc,
+                                       ErrorResult& aRv);
+
+ private:
+  uint32_t mWidth = 0, mHeight = 0;
+
+  RefPtr<SwapChain> mSwapChain;
+  RefPtr<layers::RenderRootStateManager> mRenderRootStateManager;
+  Maybe<wr::ImageKey> mImageKey;
+};
+
+}  // namespace webgpu
+}  // namespace mozilla
+
+#endif  // GPU_CanvasContext_H_
-- 
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