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/* -*- 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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