| // 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 <string> |
| |
| #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/transferable_resource.h" |
| |
| namespace viz { |
| class SingleReleaseCallback; |
| } |
| |
| 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) override; |
| bool IsSnappedToPixelGridInTarget() override; |
| void PushPropertiesTo(LayerImpl* layer) override; |
| |
| bool WillDraw(DrawMode draw_mode, |
| viz::ClientResourceProvider* resource_provider) override; |
| void AppendQuads(viz::RenderPass* render_pass, |
| AppendQuadsData* append_quads_data) override; |
| SimpleEnclosedRegion VisibleOpaqueRegion() const override; |
| void ReleaseResources() override; |
| void OnPurgeMemory() 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 SetFlipped(bool flipped); |
| void SetNearestNeighbor(bool nearest_neighbor); |
| void SetUVTopLeft(const gfx::PointF& top_left); |
| void SetUVBottomRight(const gfx::PointF& bottom_right); |
| |
| // 1--2 |
| // | | |
| // 0--3 |
| void SetVertexOpacity(const float vertex_opacity[4]); |
| |
| void SetTransferableResource( |
| const viz::TransferableResource& resource, |
| std::unique_ptr<viz::SingleReleaseCallback> 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 flipped_ = true; |
| bool nearest_neighbor_ = false; |
| gfx::PointF uv_top_left_ = gfx::PointF(); |
| gfx::PointF uv_bottom_right_ = gfx::PointF(1.f, 1.f); |
| float vertex_opacity_[4] = {1.f, 1.f, 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_ = 0; |
| std::unique_ptr<viz::SingleReleaseCallback> 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_ |