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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 MOZILLA_GFX_RENDERCOMPOSITOR_Layers_H
#define MOZILLA_GFX_RENDERCOMPOSITOR_Layers_H
#include <unordered_map>
#include "mozilla/HashFunctions.h"
#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/ScreenshotGrabber.h"
#include "mozilla/webrender/RenderCompositor.h"
#include "mozilla/webrender/RenderTextureHost.h"
namespace mozilla {
namespace wr {
class SurfaceD3D11SWGL;
class RenderCompositorLayersSWGL : public RenderCompositor {
public:
static UniquePtr<RenderCompositor> Create(
const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError);
RenderCompositorLayersSWGL(layers::Compositor* aCompositor,
const RefPtr<widget::CompositorWidget>& aWidget,
void* aContext);
virtual ~RenderCompositorLayersSWGL();
void* swgl() const override { return mContext; }
bool MakeCurrent() override;
bool BeginFrame() override;
void CancelFrame() override;
RenderedFrameId EndFrame(const nsTArray<DeviceIntRect>& aDirtyRects) override;
bool SurfaceOriginIsTopLeft() override { return true; }
LayoutDeviceIntSize GetBufferSize() override;
// Should we support this?
bool SupportsExternalBufferTextures() const override { return false; }
layers::WebRenderBackend BackendType() const override {
return layers::WebRenderBackend::SOFTWARE;
}
bool ShouldUseNativeCompositor() override { return true; }
void StartCompositing(wr::ColorF aClearColor,
const wr::DeviceIntRect* aDirtyRects,
size_t aNumDirtyRects,
const wr::DeviceIntRect* aOpaqueRects,
size_t aNumOpaqueRects) override;
void CompositorBeginFrame() override {}
void CompositorEndFrame() override;
void Bind(wr::NativeTileId aId, wr::DeviceIntPoint* aOffset, uint32_t* aFboId,
wr::DeviceIntRect aDirtyRect,
wr::DeviceIntRect aValidRect) override;
void Unbind() override;
bool MapTile(wr::NativeTileId aId, wr::DeviceIntRect aDirtyRect,
wr::DeviceIntRect aValidRect, void** aData,
int32_t* aStride) override;
void UnmapTile() override;
void CreateSurface(wr::NativeSurfaceId aId, wr::DeviceIntPoint aVirtualOffset,
wr::DeviceIntSize aTileSize, bool aIsOpaque) override;
void CreateExternalSurface(wr::NativeSurfaceId aId, bool aIsOpaque) override;
void DestroySurface(NativeSurfaceId aId) override;
void CreateTile(wr::NativeSurfaceId, int32_t aX, int32_t aY) override;
void DestroyTile(wr::NativeSurfaceId, int32_t aX, int32_t aY) override;
void AttachExternalImage(wr::NativeSurfaceId aId,
wr::ExternalImageId aExternalImage) override;
void AddSurface(wr::NativeSurfaceId aId,
const wr::CompositorSurfaceTransform& aTransform,
wr::DeviceIntRect aClipRect,
wr::ImageRendering aImageRendering) override;
void EnableNativeCompositor(bool aEnable) override {}
void DeInit() override {}
void MaybeRequestAllowFrameRecording(bool aWillRecord) override;
bool MaybeRecordFrame(layers::CompositionRecorder& aRecorder) override;
bool MaybeGrabScreenshot(const gfx::IntSize& aWindowSize) override;
bool MaybeProcessScreenshotQueue() override;
// TODO: Screenshots etc
struct TileKey {
TileKey(int32_t aX, int32_t aY) : mX(aX), mY(aY) {}
int32_t mX;
int32_t mY;
};
// Each tile retains a texture, and a DataSourceSurface of the
// same size. We draw into the source surface, and then copy the
// changed area into the texture.
class Tile {
public:
Tile() = default;
virtual ~Tile() = default;
virtual bool Map(wr::DeviceIntRect aDirtyRect, wr::DeviceIntRect aValidRect,
void** aData, int32_t* aStride) = 0;
virtual void Unmap(const gfx::IntRect& aDirtyRect) = 0;
virtual layers::DataTextureSource* GetTextureSource() = 0;
virtual bool IsValid() = 0;
gfx::Rect mValidRect;
struct KeyHashFn {
std::size_t operator()(const TileKey& aId) const {
return HashGeneric(aId.mX, aId.mY);
}
};
};
class Surface {
public:
explicit Surface(wr::DeviceIntSize aTileSize, bool aIsOpaque)
: mTileSize(aTileSize), mIsOpaque(aIsOpaque) {}
virtual ~Surface() {}
gfx::IntSize TileSize() {
return gfx::IntSize(mTileSize.width, mTileSize.height);
}
virtual SurfaceD3D11SWGL* AsSurfaceD3D11SWGL() { return nullptr; }
// External images can change size depending on which image
// is attached, so mTileSize will be 0,0 when mIsExternal
// is true.
wr::DeviceIntSize mTileSize;
bool mIsOpaque;
bool mIsExternal = false;
std::unordered_map<TileKey, UniquePtr<Tile>, Tile::KeyHashFn> mTiles;
RefPtr<RenderTextureHost> mExternalImage;
struct IdHashFn {
std::size_t operator()(const wr::NativeSurfaceId& aId) const {
return HashGeneric(wr::AsUint64(aId));
}
};
};
static gfx::SamplingFilter ToSamplingFilter(
wr::ImageRendering aImageRendering);
protected:
// The set of surfaces added to be composited for the current frame
struct FrameSurface {
wr::NativeSurfaceId mId;
gfx::Matrix4x4 mTransform;
gfx::IntRect mClipRect;
gfx::SamplingFilter mFilter;
};
virtual void HandleExternalImage(RenderTextureHost* aExternalImage,
FrameSurface& aFrameSurface) = 0;
virtual UniquePtr<RenderCompositorLayersSWGL::Surface> DoCreateSurface(
wr::DeviceIntSize aTileSize, bool aIsOpaque);
virtual UniquePtr<RenderCompositorLayersSWGL::Tile> DoCreateTile(
Surface* aSurface) = 0;
RefPtr<layers::Compositor> mCompositor;
void* mContext = nullptr;
std::unordered_map<wr::NativeSurfaceId, UniquePtr<Surface>, Surface::IdHashFn>
mSurfaces;
// Temporary state held between MapTile and UnmapTile
Tile* mCurrentTile = nullptr;
gfx::IntRect mCurrentTileDirty;
wr::NativeTileId mCurrentTileId;
nsTArray<FrameSurface> mFrameSurfaces;
bool mInFrame = false;
bool mCompositingStarted = false;
layers::ScreenshotGrabber mProfilerScreenshotGrabber;
};
static inline bool operator==(const RenderCompositorLayersSWGL::TileKey& a0,
const RenderCompositorLayersSWGL::TileKey& a1) {
return a0.mX == a1.mX && a0.mY == a1.mY;
}
} // namespace wr
} // namespace mozilla
#endif
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