NicosiaBackingStoreTextureMapperImpl.h [plain text]
#pragma once
#if USE(TEXTURE_MAPPER)
#include "CoordinatedBackingStore.h"
#include "NicosiaPlatformLayer.h"
#include "SurfaceUpdateInfo.h"
#include "TiledBackingStore.h"
#include "TiledBackingStoreClient.h"
#include <memory>
#include <wtf/Lock.h>
namespace Nicosia {
class BackingStoreTextureMapperImpl final : public BackingStore::Impl, public WebCore::TiledBackingStoreClient {
WTF_MAKE_FAST_ALLOCATED;
public:
static Factory createFactory();
BackingStoreTextureMapperImpl();
virtual ~BackingStoreTextureMapperImpl();
bool isTextureMapperImpl() const override { return true; }
struct TileUpdate {
TileUpdate() = default;
TileUpdate(const TileUpdate&) = delete;
TileUpdate& operator=(const TileUpdate&) = delete;
TileUpdate(TileUpdate&&) = default;
TileUpdate& operator=(TileUpdate&&) = default;
struct CreationData {
uint32_t tileID;
float scale;
};
Vector<CreationData> tilesToCreate;
struct UpdateData {
uint32_t tileID;
WebCore::IntRect tileRect;
WebCore::SurfaceUpdateInfo updateInfo;
};
Vector<UpdateData> tilesToUpdate;
struct RemovalData {
uint32_t tileID;
};
Vector<RemovalData> tilesToRemove;
};
struct LayerState {
LayerState() = default;
LayerState(const LayerState&) = delete;
LayerState& operator=(const LayerState&) = delete;
LayerState(LayerState&&) = delete;
LayerState& operator=(LayerState&&) = delete;
std::unique_ptr<WebCore::TiledBackingStore> mainBackingStore;
TileUpdate update;
bool isFlushing { false };
bool isPurging { false };
bool hasPendingTileCreation { false };
};
LayerState& layerState() { return m_layerState; }
void flushUpdate();
struct CompositionState {
CompositionState() = default;
CompositionState(const CompositionState&) = delete;
CompositionState& operator=(const CompositionState&) = delete;
CompositionState(CompositionState&&) = delete;
CompositionState& operator=(CompositionState&&) = delete;
RefPtr<WebCore::CoordinatedBackingStore> backingStore;
};
CompositionState& compositionState() { return m_compositionState; }
TileUpdate takeUpdate();
void tiledBackingStoreHasPendingTileCreation() override;
void createTile(uint32_t, float) override;
void updateTile(uint32_t, const WebCore::SurfaceUpdateInfo&, const WebCore::IntRect&) override;
void removeTile(uint32_t) override;
private:
LayerState m_layerState;
CompositionState m_compositionState;
struct {
Lock lock;
TileUpdate pending;
} m_update;
};
}
SPECIALIZE_TYPE_TRAITS_NICOSIA_BACKINGSTORE_IMPL(BackingStoreTextureMapperImpl, isTextureMapperImpl());
#endif // USE(TEXTURE_MAPPER)