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- // Copyright 2012 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef CC_LAYERS_TEXTURE_LAYER_IMPL_H_
- #define CC_LAYERS_TEXTURE_LAYER_IMPL_H_
- #include <memory>
- #include <string>
- #include <vector>
- #include "base/callback.h"
- #include "base/containers/flat_map.h"
- #include "base/memory/ptr_util.h"
- #include "cc/cc_export.h"
- #include "cc/layers/layer_impl.h"
- #include "cc/resources/cross_thread_shared_bitmap.h"
- #include "components/viz/common/resources/release_callback.h"
- #include "components/viz/common/resources/transferable_resource.h"
- namespace cc {
- class CC_EXPORT TextureLayerImpl : public LayerImpl {
- public:
- static std::unique_ptr<TextureLayerImpl> Create(LayerTreeImpl* tree_impl,
- int id) {
- return base::WrapUnique(new TextureLayerImpl(tree_impl, id));
- }
- TextureLayerImpl(const TextureLayerImpl&) = delete;
- ~TextureLayerImpl() override;
- TextureLayerImpl& operator=(const TextureLayerImpl&) = delete;
- std::unique_ptr<LayerImpl> CreateLayerImpl(
- LayerTreeImpl* layer_tree_impl) const override;
- bool IsSnappedToPixelGridInTarget() override;
- void PushPropertiesTo(LayerImpl* layer) override;
- bool WillDraw(DrawMode draw_mode,
- viz::ClientResourceProvider* resource_provider) override;
- void AppendQuads(viz::CompositorRenderPass* render_pass,
- AppendQuadsData* append_quads_data) override;
- SimpleEnclosedRegion VisibleOpaqueRegion() const override;
- void ReleaseResources() override;
- void OnPurgeMemory() override;
- gfx::ContentColorUsage GetContentColorUsage() const override;
- // These setter methods don't cause any implicit damage, so the texture client
- // must explicitly invalidate if they intend to cause a visible change in the
- // layer's output.
- void SetTextureId(unsigned id);
- void SetPremultipliedAlpha(bool premultiplied_alpha);
- void SetBlendBackgroundColor(bool blend);
- void SetForceTextureToOpaque(bool opaque);
- void SetFlipped(bool flipped);
- void SetNearestNeighbor(bool nearest_neighbor);
- void SetUVTopLeft(const gfx::PointF& top_left);
- void SetUVBottomRight(const gfx::PointF& bottom_right);
- void SetTransferableResource(const viz::TransferableResource& resource,
- viz::ReleaseCallback release_callback);
- // These methods notify the display compositor, through the
- // CompositorFrameSink, of the existence of a SharedBitmapId and its
- // mapping to a SharedMemory in |bitmap|. Then this SharedBitmapId can be used
- // in TransferableResources inserted on the layer while it is registered. If
- // the layer is destroyed, the SharedBitmapId will be unregistered
- // automatically, and if the CompositorFrameSink is replaced, it will be
- // re-registered on the new one. The SharedMemory must be kept alive while it
- // is registered.
- // If this is a pending layer, the registration is deferred to the active
- // layer.
- void RegisterSharedBitmapId(viz::SharedBitmapId id,
- scoped_refptr<CrossThreadSharedBitmap> bitmap);
- void UnregisterSharedBitmapId(viz::SharedBitmapId id);
- private:
- TextureLayerImpl(LayerTreeImpl* tree_impl, int id);
- const char* LayerTypeAsString() const override;
- void FreeTransferableResource();
- bool premultiplied_alpha_ = true;
- bool blend_background_color_ = false;
- bool force_texture_to_opaque_ = false;
- bool flipped_ = true;
- bool nearest_neighbor_ = false;
- gfx::PointF uv_top_left_ = gfx::PointF();
- gfx::PointF uv_bottom_right_ = gfx::PointF(1.f, 1.f);
- // True while the |transferable_resource_| is owned by this layer, and
- // becomes false once it is passed to another layer or to the
- // viz::ClientResourceProvider, at which point we get back a |resource_id_|.
- bool own_resource_ = false;
- // A TransferableResource from the layer's client that will be given
- // to the display compositor.
- viz::TransferableResource transferable_resource_;
- // Local ResourceId for the TransferableResource, to be used with the
- // compositor's viz::ClientResourceProvider in order to refer to the
- // TransferableResource given to it.
- viz::ResourceId resource_id_ = viz::kInvalidResourceId;
- viz::ReleaseCallback release_callback_;
- // As a pending layer, the set of SharedBitmapIds and the underlying
- // base::SharedMemory that must be notified to the display compositor through
- // the LayerTreeFrameSink. These will be passed to the active layer. As an
- // active layer, the set of SharedBitmapIds that need to be registered but
- // have not been yet, since it is done lazily.
- base::flat_map<viz::SharedBitmapId, scoped_refptr<CrossThreadSharedBitmap>>
- to_register_bitmaps_;
- // For active layers only. The set of SharedBitmapIds and ownership of the
- // underlying base::SharedMemory that have been notified to the display
- // compositor through the LayerTreeFrameSink. These will need to be
- // re-registered if the LayerTreeFrameSink changes (ie ReleaseResources()
- // occurs).
- base::flat_map<viz::SharedBitmapId, scoped_refptr<CrossThreadSharedBitmap>>
- registered_bitmaps_;
- // As a pending layer, the set of SharedBitmapIds that the active layer should
- // unregister.
- std::vector<viz::SharedBitmapId> to_unregister_bitmap_ids_;
- };
- } // namespace cc
- #endif // CC_LAYERS_TEXTURE_LAYER_IMPL_H_
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