Bug 1882660 [wpt PR 44844] - IDB: Consolidate previously extended WPT files into...
[gecko.git] / dom / webgpu / CanvasContext.h
blob057287b26e9cd20cc83fce47a24b9a9d5ffb31d0
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef GPU_CanvasContext_H_
7 #define GPU_CanvasContext_H_
9 #include "nsICanvasRenderingContextInternal.h"
10 #include "nsWrapperCache.h"
11 #include "ObjectModel.h"
12 #include "mozilla/layers/LayersTypes.h"
13 #include "mozilla/webrender/WebRenderAPI.h"
15 namespace mozilla {
16 namespace dom {
17 class OwningHTMLCanvasElementOrOffscreenCanvas;
18 class Promise;
19 struct GPUCanvasConfiguration;
20 enum class GPUTextureFormat : uint8_t;
21 } // namespace dom
22 namespace webgpu {
23 class Adapter;
24 class Texture;
26 class CanvasContext final : public nsICanvasRenderingContextInternal,
27 public nsWrapperCache {
28 private:
29 virtual ~CanvasContext();
30 void Cleanup();
32 public:
33 // nsISupports interface + CC
34 NS_DECL_CYCLE_COLLECTING_ISUPPORTS
35 NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(CanvasContext)
37 CanvasContext();
39 JSObject* WrapObject(JSContext* aCx,
40 JS::Handle<JSObject*> aGivenProto) override;
42 public: // nsICanvasRenderingContextInternal
43 int32_t GetWidth() override { return mCanvasSize.width; }
44 int32_t GetHeight() override { return mCanvasSize.height; }
46 NS_IMETHOD SetDimensions(int32_t aWidth, int32_t aHeight) override;
47 NS_IMETHOD InitializeWithDrawTarget(
48 nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override {
49 return NS_OK;
52 bool UpdateWebRenderCanvasData(mozilla::nsDisplayListBuilder* aBuilder,
53 WebRenderCanvasData* aCanvasData) override;
55 bool InitializeCanvasRenderer(nsDisplayListBuilder* aBuilder,
56 layers::CanvasRenderer* aRenderer) override;
57 mozilla::UniquePtr<uint8_t[]> GetImageBuffer(
58 int32_t* out_format, gfx::IntSize* out_imageSize) override;
59 NS_IMETHOD GetInputStream(const char* aMimeType,
60 const nsAString& aEncoderOptions,
61 nsIInputStream** aStream) override;
62 already_AddRefed<mozilla::gfx::SourceSurface> GetSurfaceSnapshot(
63 gfxAlphaType* aOutAlphaType) override;
65 void SetOpaqueValueFromOpaqueAttr(bool aOpaqueAttrValue) override {}
66 bool GetIsOpaque() override { return true; }
68 void ResetBitmap() override { Unconfigure(); }
70 void MarkContextClean() override {}
72 NS_IMETHOD Redraw(const gfxRect& aDirty) override { return NS_OK; }
74 void DidRefresh() override {}
76 void MarkContextCleanForFrameCapture() override {}
77 Watchable<FrameCaptureState>* GetFrameCaptureState() override {
78 return nullptr;
81 Maybe<layers::SurfaceDescriptor> GetFrontBuffer(WebGLFramebufferJS*,
82 const bool) override;
84 already_AddRefed<layers::FwdTransactionTracker> UseCompositableForwarder(
85 layers::CompositableForwarder* aForwarder) override;
87 bool IsOffscreenCanvas() { return !!mOffscreenCanvas; }
89 public:
90 void GetCanvas(dom::OwningHTMLCanvasElementOrOffscreenCanvas&) const;
92 void Configure(const dom::GPUCanvasConfiguration& aConfig);
93 void Unconfigure();
95 RefPtr<Texture> GetCurrentTexture(ErrorResult& aRv);
96 void MaybeQueueSwapChainPresent();
97 Maybe<layers::SurfaceDescriptor> SwapChainPresent();
98 void ForceNewFrame();
99 void InvalidateCanvasContent();
101 private:
102 gfx::IntSize mCanvasSize;
103 std::unique_ptr<dom::GPUCanvasConfiguration> mConfig;
104 bool mPendingSwapChainPresent = false;
105 bool mWaitingCanvasRendererInitialized = false;
107 RefPtr<WebGPUChild> mBridge;
108 RefPtr<Texture> mTexture;
109 gfx::SurfaceFormat mGfxFormat = gfx::SurfaceFormat::R8G8B8A8;
111 Maybe<layers::RemoteTextureId> mLastRemoteTextureId;
112 Maybe<layers::RemoteTextureOwnerId> mRemoteTextureOwnerId;
113 RefPtr<layers::FwdTransactionTracker> mFwdTransactionTracker;
114 bool mUseExternalTextureInSwapChain = false;
115 bool mNewTextureRequested = false;
118 } // namespace webgpu
119 } // namespace mozilla
121 #endif // GPU_CanvasContext_H_