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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_CANVAS_2D_LAYER_BRIDGE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_CANVAS_2D_LAYER_BRIDGE_H_
#include <memory>
#include "base/macros.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/numerics/checked_math.h"
#include "build/build_config.h"
#include "cc/layers/texture_layer_client.h"
#include "third_party/blink/renderer/platform/geometry/float_rect.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/graphics/canvas_color_params.h"
#include "third_party/blink/renderer/platform/graphics/canvas_resource_host.h"
#include "third_party/blink/renderer/platform/graphics/graphics_types.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_recorder.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/deque.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "ui/gfx/color_space.h"
struct SkImageInfo;
namespace cc {
class Layer;
class TextureLayer;
}
namespace blink {
class Canvas2DLayerBridgeTest;
class SharedContextRateLimiter;
class StaticBitmapImage;
#if defined(OS_MACOSX)
// Canvas hibernation is currently disabled on MacOS X due to a bug that causes
// content loss. TODO: Find a better fix for crbug.com/588434
#define CANVAS2D_HIBERNATION_ENABLED 0
#else
#define CANVAS2D_HIBERNATION_ENABLED 1
#endif
// TODO: Fix background rendering and remove this workaround. crbug.com/600386
#define CANVAS2D_BACKGROUND_RENDER_SWITCH_TO_CPU 0
class PLATFORM_EXPORT Canvas2DLayerBridge : public cc::TextureLayerClient {
public:
enum AccelerationMode {
kDisableAcceleration,
kEnableAcceleration,
kForceAccelerationForTesting,
};
Canvas2DLayerBridge(const IntSize&,
AccelerationMode,
const CanvasColorParams&);
~Canvas2DLayerBridge() override;
// cc::TextureLayerClient implementation.
bool PrepareTransferableResource(
cc::SharedBitmapIdRegistrar* bitmap_registrar,
viz::TransferableResource* out_resource,
std::unique_ptr<viz::SingleReleaseCallback>* out_release_callback)
override;
void FinalizeFrame();
void SetIsHidden(bool);
void DidDraw(const FloatRect&);
void DoPaintInvalidation(const FloatRect& dirty_rect);
cc::Layer* Layer();
bool Restore();
void DisableDeferral(DisableDeferralReason);
void UpdateFilterQuality();
// virtual for unit testing
virtual void WillOverwriteCanvas();
virtual void DrawFullImage(const cc::PaintImage&);
virtual void DidRestoreCanvasMatrixClipStack(cc::PaintCanvas*) {}
virtual bool IsAccelerated() const;
cc::PaintCanvas* Canvas();
bool IsValid() const;
bool WritePixels(const SkImageInfo&,
const void* pixels,
size_t row_bytes,
int x,
int y);
void DontUseIdleSchedulingForTesting() {
dont_use_idle_scheduling_for_testing_ = true;
}
void SetCanvasResourceHost(CanvasResourceHost* host) {
resource_host_ = host;
}
void Hibernate();
bool IsHibernating() const { return hibernation_image_ != nullptr; }
const CanvasColorParams& ColorParams() const { return color_params_; }
bool HasRecordedDrawCommands() { return have_recorded_draw_commands_; }
scoped_refptr<StaticBitmapImage> NewImageSnapshot(AccelerationHint);
bool WasDrawnToAfterSnapshot() const {
return snapshot_state_ == kDrawnToAfterSnapshot;
}
// The values of the enum entries must not change because they are used for
// usage metrics histograms. New values can be added to the end.
enum HibernationEvent {
kHibernationScheduled = 0,
kHibernationAbortedDueToDestructionWhileHibernatePending = 1,
// kHibernationAbortedDueToPendingDestruction = 2, (obsolete)
kHibernationAbortedDueToVisibilityChange = 3,
kHibernationAbortedDueGpuContextLoss = 4,
kHibernationAbortedDueToSwitchToUnacceleratedRendering = 5,
kHibernationAbortedDueToAllocationFailure = 6,
kHibernationEndedNormally = 7,
kHibernationEndedWithSwitchToBackgroundRendering = 8,
kHibernationEndedWithFallbackToSW = 9,
kHibernationEndedWithTeardown = 10,
kHibernationAbortedBecauseNoSurface = 11,
kMaxValue = kHibernationAbortedBecauseNoSurface,
};
class PLATFORM_EXPORT Logger {
public:
virtual void ReportHibernationEvent(HibernationEvent);
virtual void DidStartHibernating() {}
virtual ~Logger() = default;
};
void SetLoggerForTesting(std::unique_ptr<Logger>);
CanvasResourceProvider* GetOrCreateResourceProvider(
AccelerationHint = kPreferAcceleration);
CanvasResourceProvider* ResourceProvider() const;
void FlushRecording();
private:
bool IsHidden() { return is_hidden_; }
bool CheckResourceProviderValid();
void ResetResourceProvider();
void StartRecording();
void SkipQueuedDrawCommands();
bool ShouldAccelerate(AccelerationHint) const;
std::unique_ptr<PaintRecorder> recorder_;
sk_sp<SkImage> hibernation_image_;
scoped_refptr<cc::TextureLayer> layer_;
std::unique_ptr<SharedContextRateLimiter> rate_limiter_;
std::unique_ptr<Logger> logger_;
int msaa_sample_count_;
int frames_since_last_commit_ = 0;
size_t bytes_allocated_;
bool have_recorded_draw_commands_;
bool is_hidden_;
bool is_deferral_enabled_;
bool software_rendering_while_hidden_;
bool hibernation_scheduled_ = false;
bool dont_use_idle_scheduling_for_testing_ = false;
bool context_lost_ = false;
friend class Canvas2DLayerBridgeTest;
friend class CanvasRenderingContext2DTest;
friend class HTMLCanvasPainterTestForCAP;
AccelerationMode acceleration_mode_;
CanvasColorParams color_params_;
IntSize size_;
base::CheckedNumeric<int> recording_pixel_count_;
enum SnapshotState {
kInitialSnapshotState,
kDidAcquireSnapshot,
kDrawnToAfterSnapshot,
};
mutable SnapshotState snapshot_state_;
CanvasResourceHost* resource_host_;
base::WeakPtrFactory<Canvas2DLayerBridge> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(Canvas2DLayerBridge);
};
} // namespace blink
#endif
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