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https://github.com/mozilla/gecko-dev.git
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121 lines
4 KiB
C++
121 lines
4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GPU_CanvasContext_H_
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#define GPU_CanvasContext_H_
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#include "nsICanvasRenderingContextInternal.h"
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#include "nsWrapperCache.h"
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#include "ObjectModel.h"
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#include "mozilla/layers/LayersTypes.h"
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#include "mozilla/webrender/WebRenderAPI.h"
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namespace mozilla {
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namespace dom {
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class OwningHTMLCanvasElementOrOffscreenCanvas;
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class Promise;
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struct GPUCanvasConfiguration;
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enum class GPUTextureFormat : uint8_t;
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} // namespace dom
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namespace webgpu {
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class Adapter;
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class Texture;
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class CanvasContext final : public nsICanvasRenderingContextInternal,
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public nsWrapperCache {
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private:
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virtual ~CanvasContext();
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void Cleanup();
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public:
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// nsISupports interface + CC
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(CanvasContext)
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CanvasContext();
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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public: // nsICanvasRenderingContextInternal
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int32_t GetWidth() override { return mCanvasSize.width; }
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int32_t GetHeight() override { return mCanvasSize.height; }
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NS_IMETHOD SetDimensions(int32_t aWidth, int32_t aHeight) override;
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NS_IMETHOD InitializeWithDrawTarget(
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nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override {
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return NS_OK;
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}
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bool UpdateWebRenderCanvasData(mozilla::nsDisplayListBuilder* aBuilder,
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WebRenderCanvasData* aCanvasData) override;
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bool InitializeCanvasRenderer(nsDisplayListBuilder* aBuilder,
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layers::CanvasRenderer* aRenderer) override;
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mozilla::UniquePtr<uint8_t[]> GetImageBuffer(
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int32_t* out_format, gfx::IntSize* out_imageSize) override;
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NS_IMETHOD GetInputStream(const char* aMimeType,
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const nsAString& aEncoderOptions,
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nsIInputStream** aStream) override;
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already_AddRefed<mozilla::gfx::SourceSurface> GetSurfaceSnapshot(
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gfxAlphaType* aOutAlphaType) override;
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void SetOpaqueValueFromOpaqueAttr(bool aOpaqueAttrValue) override {}
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bool GetIsOpaque() override { return true; }
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void ResetBitmap() override { Unconfigure(); }
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void MarkContextClean() override {}
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NS_IMETHOD Redraw(const gfxRect& aDirty) override { return NS_OK; }
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void DidRefresh() override {}
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void MarkContextCleanForFrameCapture() override {}
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Watchable<FrameCaptureState>* GetFrameCaptureState() override {
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return nullptr;
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}
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Maybe<layers::SurfaceDescriptor> GetFrontBuffer(WebGLFramebufferJS*,
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const bool) override;
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already_AddRefed<layers::FwdTransactionTracker> UseCompositableForwarder(
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layers::CompositableForwarder* aForwarder) override;
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bool IsOffscreenCanvas() { return !!mOffscreenCanvas; }
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public:
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void GetCanvas(dom::OwningHTMLCanvasElementOrOffscreenCanvas&) const;
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void Configure(const dom::GPUCanvasConfiguration& aConfig);
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void Unconfigure();
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RefPtr<Texture> GetCurrentTexture(ErrorResult& aRv);
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void MaybeQueueSwapChainPresent();
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Maybe<layers::SurfaceDescriptor> SwapChainPresent();
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void ForceNewFrame();
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void InvalidateCanvasContent();
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private:
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gfx::IntSize mCanvasSize;
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std::unique_ptr<dom::GPUCanvasConfiguration> mConfig;
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bool mPendingSwapChainPresent = false;
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bool mWaitingCanvasRendererInitialized = false;
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RefPtr<WebGPUChild> mBridge;
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RefPtr<Texture> mTexture;
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gfx::SurfaceFormat mGfxFormat = gfx::SurfaceFormat::R8G8B8A8;
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Maybe<layers::RemoteTextureId> mLastRemoteTextureId;
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Maybe<layers::RemoteTextureOwnerId> mRemoteTextureOwnerId;
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RefPtr<layers::FwdTransactionTracker> mFwdTransactionTracker;
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bool mUseExternalTextureInSwapChain = false;
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bool mNewTextureRequested = false;
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};
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} // namespace webgpu
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} // namespace mozilla
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#endif // GPU_CanvasContext_H_
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