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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_NATIVE_H
#define MOZILLA_GFX_RENDERCOMPOSITOR_NATIVE_H
#include <unordered_map>
#include "GLTypes.h"
#include "mozilla/HashFunctions.h"
#include "mozilla/layers/ScreenshotGrabber.h"
#include "mozilla/webrender/RenderCompositor.h"
#include "mozilla/TimeStamp.h"
namespace mozilla {
namespace layers {
class NativeLayerRootSnapshotter;
class NativeLayerRoot;
class NativeLayer;
class SurfacePoolHandle;
} // namespace layers
namespace wr {
// RenderCompositorNative is a skeleton class for implementing compositors
// backed by NativeLayer surfaces and tiles. This is not meant to be directly
// instantiated and is instead derived for various use-cases such as OpenGL or
// SWGL.
class RenderCompositorNative : public RenderCompositor {
public:
virtual ~RenderCompositorNative();
bool BeginFrame() override;
RenderedFrameId EndFrame(const nsTArray<DeviceIntRect>& aDirtyRects) final;
void Pause() override;
bool Resume() override;
layers::WebRenderCompositor CompositorType() const override;
LayoutDeviceIntSize GetBufferSize() override;
bool ShouldUseNativeCompositor() override;
void GetCompositorCapabilities(CompositorCapabilities* aCaps) override;
bool SurfaceOriginIsTopLeft() override { return true; }
// Does the readback for the ShouldUseNativeCompositor() case.
bool MaybeReadback(const gfx::IntSize& aReadbackSize,
const wr::ImageFormat& aReadbackFormat,
const Range<uint8_t>& aReadbackBuffer,
bool* aNeedsYFlip) override;
bool MaybeRecordFrame(layers::CompositionRecorder& aRecorder) override;
bool MaybeGrabScreenshot(const gfx::IntSize& aWindowSize) override;
bool MaybeProcessScreenshotQueue() override;
// Interface for wr::Compositor
void CompositorBeginFrame() override;
void CompositorEndFrame() override;
void CreateSurface(wr::NativeSurfaceId aId, wr::DeviceIntPoint aVirtualOffset,
wr::DeviceIntSize aTileSize, bool aIsOpaque) override;
void CreateExternalSurface(wr::NativeSurfaceId aId, bool aIsOpaque) override;
void CreateBackdropSurface(wr::NativeSurfaceId aId,
wr::ColorF aColor) override;
void DestroySurface(NativeSurfaceId aId) override;
void CreateTile(wr::NativeSurfaceId aId, int32_t aX, int32_t aY) override;
void DestroyTile(wr::NativeSurfaceId aId, 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;
struct TileKey {
TileKey(int32_t aX, int32_t aY) : mX(aX), mY(aY) {}
int32_t mX;
int32_t mY;
};
protected:
explicit RenderCompositorNative(
const RefPtr<widget::CompositorWidget>& aWidget,
gl::GLContext* aGL = nullptr);
virtual bool InitDefaultFramebuffer(const gfx::IntRect& aBounds) = 0;
virtual void DoSwap() = 0;
virtual void DoFlush() {}
void BindNativeLayer(wr::NativeTileId aId, const gfx::IntRect& aDirtyRect);
void UnbindNativeLayer();
// Can be null.
RefPtr<layers::NativeLayerRoot> mNativeLayerRoot;
UniquePtr<layers::NativeLayerRootSnapshotter> mNativeLayerRootSnapshotter;
layers::ScreenshotGrabber mProfilerScreenshotGrabber;
RefPtr<layers::NativeLayer> mNativeLayerForEntireWindow;
RefPtr<layers::SurfacePoolHandle> mSurfacePoolHandle;
struct TileKeyHashFn {
std::size_t operator()(const TileKey& aId) const {
return HashGeneric(aId.mX, aId.mY);
}
};
struct Surface {
explicit Surface(wr::DeviceIntSize aTileSize, bool aIsOpaque)
: mTileSize(aTileSize), mIsOpaque(aIsOpaque) {}
gfx::IntSize TileSize() {
return gfx::IntSize(mTileSize.width, mTileSize.height);
}
// 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, RefPtr<layers::NativeLayer>, TileKeyHashFn>
mNativeLayers;
};
struct SurfaceIdHashFn {
std::size_t operator()(const wr::NativeSurfaceId& aId) const {
return HashGeneric(wr::AsUint64(aId));
}
};
// Used in native compositor mode:
RefPtr<layers::NativeLayer> mCurrentlyBoundNativeLayer;
nsTArray<RefPtr<layers::NativeLayer>> mAddedLayers;
uint64_t mTotalTilePixelCount = 0;
uint64_t mAddedTilePixelCount = 0;
uint64_t mAddedClippedPixelCount = 0;
uint64_t mDrawnPixelCount = 0;
gfx::IntRect mVisibleBounds;
std::unordered_map<wr::NativeSurfaceId, Surface, SurfaceIdHashFn> mSurfaces;
TimeStamp mBeginFrameTimeStamp;
};
static inline bool operator==(const RenderCompositorNative::TileKey& a0,
const RenderCompositorNative::TileKey& a1) {
return a0.mX == a1.mX && a0.mY == a1.mY;
}
// RenderCompositorNativeOGL is a NativeLayer compositor that exposes an
// OpenGL framebuffer for the respective NativeLayer bound to each tile.
class RenderCompositorNativeOGL : public RenderCompositorNative {
public:
static UniquePtr<RenderCompositor> Create(
const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError);
RenderCompositorNativeOGL(const RefPtr<widget::CompositorWidget>& aWidget,
RefPtr<gl::GLContext>&& aGL);
virtual ~RenderCompositorNativeOGL();
bool WaitForGPU() override;
gl::GLContext* gl() const override { return mGL; }
void Bind(wr::NativeTileId aId, wr::DeviceIntPoint* aOffset, uint32_t* aFboId,
wr::DeviceIntRect aDirtyRect,
wr::DeviceIntRect aValidRect) override;
void Unbind() override;
protected:
void InsertFrameDoneSync();
bool InitDefaultFramebuffer(const gfx::IntRect& aBounds) override;
void DoSwap() override;
void DoFlush() override;
RefPtr<gl::GLContext> mGL;
// Used to apply back-pressure in WaitForGPU().
GLsync mPreviousFrameDoneSync = nullptr;
GLsync mThisFrameDoneSync = nullptr;
};
// RenderCompositorNativeSWGL is a NativeLayer compositor that only
// deals with mapping the underlying buffer for SWGL usage of a tile.
class RenderCompositorNativeSWGL : public RenderCompositorNative {
public:
static UniquePtr<RenderCompositor> Create(
const RefPtr<widget::CompositorWidget>& aWidget, nsACString& aError);
RenderCompositorNativeSWGL(const RefPtr<widget::CompositorWidget>& aWidget,
void* aContext);
virtual ~RenderCompositorNativeSWGL();
void* swgl() const override { return mContext; }
bool MakeCurrent() override;
void CancelFrame() override;
layers::WebRenderBackend BackendType() const override {
return layers::WebRenderBackend::SOFTWARE;
}
// Maps an underlying layer and sets aData to the top left pixel of
// aValidRect. The row stride is set to aStride, note this doesn't
// mean there are always aStride bytes available per row (the
// last row will fall short if aValidRect is not at X==0).
bool MapTile(wr::NativeTileId aId, wr::DeviceIntRect aDirtyRect,
wr::DeviceIntRect aValidRect, void** aData,
int32_t* aStride) override;
void UnmapTile() override;
protected:
bool InitDefaultFramebuffer(const gfx::IntRect& aBounds) override;
void DoSwap() override;
bool MapNativeLayer(layers::NativeLayer* aLayer,
const gfx::IntRect& aDirtyRect,
const gfx::IntRect& aValidRect);
void UnmapNativeLayer();
void* mContext = nullptr;
RefPtr<gfx::DrawTarget> mLayerTarget;
uint8_t* mLayerData = nullptr;
uint8_t* mLayerValidRectData = nullptr;
int32_t mLayerStride = 0;
};
} // namespace wr
} // namespace mozilla
#endif
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