/* -*- 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 "mozilla/layers/LayersTypes.h"
#include "mozilla/webrender/WebRenderAPI.h"
namespace mozilla {
namespace dom {
class OwningHTMLCanvasElementOrOffscreenCanvas;
class Promise;
struct GPUCanvasConfiguration;
enum class GPUTextureFormat : uint8_t;
}
// namespace dom
namespace webgpu {
class Adapter;
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_WRAPPERCACHE_CLASS(CanvasContext)
CanvasContext();
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
public:
// nsICanvasRenderingContextInternal
int32_t GetWidth() override {
return mCanvasSize.width; }
int32_t GetHeight() override {
return mCanvasSize.height; }
NS_IMETHOD SetDimensions(int32_t aWidth, int32_t aHeight) override;
NS_IMETHOD InitializeWithDrawTarget(
nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override {
return NS_OK;
}
bool UpdateWebRenderCanvasData(mozilla::nsDisplayListBuilder* aBuilder,
WebRenderCanvasData* aCanvasData) override;
bool InitializeCanvasRenderer(nsDisplayListBuilder* aBuilder,
layers::CanvasRenderer* aRenderer) override;
mozilla::UniquePtr<uint8_t[]> GetImageBuffer(
int32_t* out_format, gfx::IntSize* out_imageSize) override;
NS_IMETHOD GetInputStream(
const char* aMimeType,
const nsAString& aEncoderOptions,
nsIInputStream** aStream) override;
already_AddRefed<gfx::SourceSurface> GetSurfaceSnapshot(
gfxAlphaType* aOutAlphaType) override;
void SetOpaqueValueFromOpaqueAttr(
bool aOpaqueAttrValue) override {}
bool GetIsOpaque() override {
return true; }
void ResetBitmap() override { Unconfigure(); }
void MarkContextClean() override {}
NS_IMETHOD Redraw(
const gfxRect& aDirty) override {
return NS_OK; }
void DidRefresh() override {}
void MarkContextCleanForFrameCapture() override {}
Watchable<FrameCaptureState>* GetFrameCaptureState() override {
return nullptr;
}
Maybe<layers::SurfaceDescriptor> GetFrontBuffer(WebGLFramebufferJS*,
const bool) override;
already_AddRefed<layers::FwdTransactionTracker> UseCompositableForwarder(
layers::CompositableForwarder* aForwarder) override;
bool IsOffscreenCanvas() {
return !!mOffscreenCanvas; }
public:
void GetCanvas(dom::OwningHTMLCanvasElementOrOffscreenCanvas&)
const;
void Configure(
const dom::GPUCanvasConfiguration& aConfig);
void Unconfigure();
RefPtr<Texture> GetCurrentTexture(ErrorResult& aRv);
void MaybeQueueSwapChainPresent();
Maybe<layers::SurfaceDescriptor> SwapChainPresent();
void ForceNewFrame();
void InvalidateCanvasContent();
private:
gfx::IntSize mCanvasSize;
std::unique_ptr<dom::GPUCanvasConfiguration> mConfig;
bool mPendingSwapChainPresent =
false;
bool mWaitingCanvasRendererInitialized =
false;
RefPtr<WebGPUChild> mBridge;
RefPtr<Texture> mTexture;
gfx::SurfaceFormat mGfxFormat = gfx::SurfaceFormat::R8G8B8A8;
Maybe<layers::RemoteTextureId> mLastRemoteTextureId;
Maybe<layers::RemoteTextureOwnerId> mRemoteTextureOwnerId;
RefPtr<layers::FwdTransactionTracker> mFwdTransactionTracker;
bool mUseExternalTextureInSwapChain =
false;
bool mNewTextureRequested =
false;
};
}
// namespace webgpu
}
// namespace mozilla
#endif // GPU_CanvasContext_H_
