| // Copyright 2011 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. |
| |
| #include "cc/layers/texture_layer_impl.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/strings/stringprintf.h" |
| #include "cc/trees/layer_tree_frame_sink.h" |
| #include "cc/trees/layer_tree_impl.h" |
| #include "cc/trees/occlusion.h" |
| #include "components/viz/common/quads/solid_color_draw_quad.h" |
| #include "components/viz/common/quads/texture_draw_quad.h" |
| #include "components/viz/common/resources/bitmap_allocation.h" |
| #include "components/viz/common/resources/platform_color.h" |
| #include "components/viz/common/resources/single_release_callback.h" |
| |
| namespace cc { |
| |
| TextureLayerImpl::TextureLayerImpl(LayerTreeImpl* tree_impl, int id) |
| : LayerImpl(tree_impl, id) {} |
| |
| TextureLayerImpl::~TextureLayerImpl() { |
| FreeTransferableResource(); |
| |
| LayerTreeFrameSink* sink = layer_tree_impl()->layer_tree_frame_sink(); |
| // The LayerTreeFrameSink may be gone, in which case there's no need to |
| // unregister anything. |
| if (sink) { |
| for (const auto& pair : registered_bitmaps_) { |
| sink->DidDeleteSharedBitmap(pair.first); |
| } |
| } |
| } |
| |
| std::unique_ptr<LayerImpl> TextureLayerImpl::CreateLayerImpl( |
| LayerTreeImpl* tree_impl) { |
| return TextureLayerImpl::Create(tree_impl, id()); |
| } |
| |
| bool TextureLayerImpl::IsSnappedToPixelGridInTarget() { |
| // See TextureLayer::IsSnappedToPixelGridInTarget() for explanation of |true|. |
| return true; |
| } |
| |
| void TextureLayerImpl::PushPropertiesTo(LayerImpl* layer) { |
| LayerImpl::PushPropertiesTo(layer); |
| TextureLayerImpl* texture_layer = static_cast<TextureLayerImpl*>(layer); |
| texture_layer->SetFlipped(flipped_); |
| texture_layer->SetUVTopLeft(uv_top_left_); |
| texture_layer->SetUVBottomRight(uv_bottom_right_); |
| texture_layer->SetVertexOpacity(vertex_opacity_); |
| texture_layer->SetPremultipliedAlpha(premultiplied_alpha_); |
| texture_layer->SetBlendBackgroundColor(blend_background_color_); |
| texture_layer->SetNearestNeighbor(nearest_neighbor_); |
| if (own_resource_) { |
| texture_layer->SetTransferableResource(transferable_resource_, |
| std::move(release_callback_)); |
| own_resource_ = false; |
| } |
| for (auto& pair : to_register_bitmaps_) |
| texture_layer->RegisterSharedBitmapId(pair.first, std::move(pair.second)); |
| to_register_bitmaps_.clear(); |
| for (const auto& id : to_unregister_bitmap_ids_) |
| texture_layer->UnregisterSharedBitmapId(id); |
| to_unregister_bitmap_ids_.clear(); |
| } |
| |
| bool TextureLayerImpl::WillDraw( |
| DrawMode draw_mode, |
| viz::ClientResourceProvider* resource_provider) { |
| if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE) |
| return false; |
| // These imply some synchronization problem where the compositor is in gpu |
| // compositing but the client thinks it is in software, or vice versa. These |
| // should only happen transiently, and should resolve when the client hears |
| // about the mode switch. |
| if (draw_mode == DRAW_MODE_HARDWARE && transferable_resource_.is_software) { |
| DLOG(ERROR) << "Gpu compositor has software resource in TextureLayer"; |
| return false; |
| } |
| if (draw_mode == DRAW_MODE_SOFTWARE && !transferable_resource_.is_software) { |
| DLOG(ERROR) << "Software compositor has gpu resource in TextureLayer"; |
| return false; |
| } |
| |
| if (!LayerImpl::WillDraw(draw_mode, resource_provider)) |
| return false; |
| |
| if (own_resource_) { |
| DCHECK(!resource_id_); |
| if (!transferable_resource_.mailbox_holder.mailbox.IsZero()) { |
| resource_id_ = resource_provider->ImportResource( |
| transferable_resource_, std::move(release_callback_)); |
| DCHECK(resource_id_); |
| } |
| own_resource_ = false; |
| } |
| |
| return resource_id_; |
| } |
| |
| void TextureLayerImpl::AppendQuads(viz::RenderPass* render_pass, |
| AppendQuadsData* append_quads_data) { |
| DCHECK(resource_id_); |
| |
| LayerTreeFrameSink* sink = layer_tree_impl()->layer_tree_frame_sink(); |
| for (const auto& pair : to_register_bitmaps_) { |
| // Because we may want to notify a display compositor about this |
| // base::SharedMemory more than one time, we need to be able to keep |
| // making handles to share with it, so we can't close the |
| // base::SharedMemory. |
| mojo::ScopedSharedBufferHandle handle = |
| viz::bitmap_allocation::DuplicateWithoutClosingMappedBitmap( |
| pair.second->shared_memory(), pair.second->size(), |
| pair.second->format()); |
| sink->DidAllocateSharedBitmap(std::move(handle), pair.first); |
| } |
| // All |to_register_bitmaps_| have been registered above, so we can move them |
| // all to the |registered_bitmaps_|. |
| registered_bitmaps_.insert( |
| std::make_move_iterator(to_register_bitmaps_.begin()), |
| std::make_move_iterator(to_register_bitmaps_.end())); |
| to_register_bitmaps_.clear(); |
| |
| SkColor bg_color = |
| blend_background_color_ ? background_color() : SK_ColorTRANSPARENT; |
| bool are_contents_opaque = |
| contents_opaque() || (SkColorGetA(bg_color) == 0xFF); |
| |
| viz::SharedQuadState* shared_quad_state = |
| render_pass->CreateAndAppendSharedQuadState(); |
| PopulateSharedQuadState(shared_quad_state, are_contents_opaque); |
| |
| AppendDebugBorderQuad(render_pass, gfx::Rect(bounds()), shared_quad_state, |
| append_quads_data); |
| |
| gfx::Rect quad_rect(bounds()); |
| gfx::Rect visible_quad_rect = |
| draw_properties().occlusion_in_content_space.GetUnoccludedContentRect( |
| quad_rect); |
| bool needs_blending = !are_contents_opaque; |
| if (visible_quad_rect.IsEmpty()) |
| return; |
| |
| if (!vertex_opacity_[0] && !vertex_opacity_[1] && !vertex_opacity_[2] && |
| !vertex_opacity_[3]) |
| return; |
| |
| auto* quad = render_pass->CreateAndAppendDrawQuad<viz::TextureDrawQuad>(); |
| quad->SetNew(shared_quad_state, quad_rect, visible_quad_rect, needs_blending, |
| resource_id_, premultiplied_alpha_, uv_top_left_, |
| uv_bottom_right_, bg_color, vertex_opacity_, flipped_, |
| nearest_neighbor_, false); |
| quad->set_resource_size_in_pixels(transferable_resource_.size); |
| ValidateQuadResources(quad); |
| } |
| |
| SimpleEnclosedRegion TextureLayerImpl::VisibleOpaqueRegion() const { |
| if (contents_opaque()) |
| return SimpleEnclosedRegion(visible_layer_rect()); |
| |
| if (blend_background_color_ && (SkColorGetA(background_color()) == 0xFF)) |
| return SimpleEnclosedRegion(visible_layer_rect()); |
| |
| return SimpleEnclosedRegion(); |
| } |
| |
| void TextureLayerImpl::OnPurgeMemory() { |
| // Do nothing here intentionally as the LayerTreeFrameSink isn't lost. |
| // Unregistering SharedBitmapIds with the LayerTreeFrameSink wouldn't free |
| // the shared memory, as the TextureLayer and/or TextureLayerClient will still |
| // have a reference to it. |
| } |
| |
| void TextureLayerImpl::ReleaseResources() { |
| // Gpu resources are lost when the LayerTreeFrameSink is lost. But software |
| // resources are still valid, and we can keep them here in that case. |
| if (!transferable_resource_.is_software) |
| FreeTransferableResource(); |
| |
| // The LayerTreeFrameSink is gone and being replaced, so we will have to |
| // re-register all SharedBitmapIds on the new LayerTreeFrameSink. We don't |
| // need to do that until the SharedBitmapIds will be used, in AppendQuads(), |
| // but we mark them all as to be registered here. |
| to_register_bitmaps_.insert( |
| std::make_move_iterator(registered_bitmaps_.begin()), |
| std::make_move_iterator(registered_bitmaps_.end())); |
| registered_bitmaps_.clear(); |
| // The |to_unregister_bitmap_ids_| are kept since the active layer will re- |
| // register its SharedBitmapIds with a new LayerTreeFrameSink in the future, |
| // so we must remember that we want to unregister it (or avoid registering at |
| // all) instead. |
| } |
| |
| void TextureLayerImpl::SetPremultipliedAlpha(bool premultiplied_alpha) { |
| premultiplied_alpha_ = premultiplied_alpha; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::SetBlendBackgroundColor(bool blend) { |
| blend_background_color_ = blend; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::SetFlipped(bool flipped) { |
| flipped_ = flipped; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::SetNearestNeighbor(bool nearest_neighbor) { |
| nearest_neighbor_ = nearest_neighbor; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::SetUVTopLeft(const gfx::PointF& top_left) { |
| uv_top_left_ = top_left; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::SetUVBottomRight(const gfx::PointF& bottom_right) { |
| uv_bottom_right_ = bottom_right; |
| SetNeedsPushProperties(); |
| } |
| |
| // 1--2 |
| // | | |
| // 0--3 |
| void TextureLayerImpl::SetVertexOpacity(const float vertex_opacity[4]) { |
| vertex_opacity_[0] = vertex_opacity[0]; |
| vertex_opacity_[1] = vertex_opacity[1]; |
| vertex_opacity_[2] = vertex_opacity[2]; |
| vertex_opacity_[3] = vertex_opacity[3]; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::SetTransferableResource( |
| const viz::TransferableResource& resource, |
| std::unique_ptr<viz::SingleReleaseCallback> release_callback) { |
| DCHECK_EQ(resource.mailbox_holder.mailbox.IsZero(), !release_callback); |
| FreeTransferableResource(); |
| transferable_resource_ = resource; |
| release_callback_ = std::move(release_callback); |
| own_resource_ = true; |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::RegisterSharedBitmapId( |
| viz::SharedBitmapId id, |
| scoped_refptr<CrossThreadSharedBitmap> bitmap) { |
| // If a TextureLayer leaves and rejoins a tree without the TextureLayerImpl |
| // being destroyed, then it will re-request registration of ids that are still |
| // registered on the impl side, so we can just ignore these requests. |
| if (registered_bitmaps_.find(id) == registered_bitmaps_.end()) { |
| // If this is a pending layer, these will be moved to the active layer when |
| // we PushPropertiesTo(). Otherwise, we don't need to notify these to the |
| // LayerTreeFrameSink until we're going to use them, so defer it until |
| // AppendQuads(). |
| to_register_bitmaps_[id] = std::move(bitmap); |
| } |
| base::Erase(to_unregister_bitmap_ids_, id); |
| SetNeedsPushProperties(); |
| } |
| |
| void TextureLayerImpl::UnregisterSharedBitmapId(viz::SharedBitmapId id) { |
| if (IsActive()) { |
| LayerTreeFrameSink* sink = layer_tree_impl()->layer_tree_frame_sink(); |
| if (sink && registered_bitmaps_.find(id) != registered_bitmaps_.end()) |
| sink->DidDeleteSharedBitmap(id); |
| to_register_bitmaps_.erase(id); |
| registered_bitmaps_.erase(id); |
| } else { |
| // The active layer will unregister. We do this because it may be using the |
| // SharedBitmapId, so we should remove the SharedBitmapId only after we've |
| // had a chance to replace it with activation. |
| to_unregister_bitmap_ids_.push_back(id); |
| SetNeedsPushProperties(); |
| } |
| } |
| |
| const char* TextureLayerImpl::LayerTypeAsString() const { |
| return "cc::TextureLayerImpl"; |
| } |
| |
| void TextureLayerImpl::FreeTransferableResource() { |
| if (own_resource_) { |
| DCHECK(!resource_id_); |
| if (release_callback_) { |
| // We didn't use the resource, but the client might need the SyncToken |
| // before it can use the resource with its own GL context. |
| release_callback_->Run(transferable_resource_.mailbox_holder.sync_token, |
| false); |
| } |
| transferable_resource_ = viz::TransferableResource(); |
| release_callback_ = nullptr; |
| } else if (resource_id_) { |
| DCHECK(!own_resource_); |
| auto* resource_provider = layer_tree_impl()->resource_provider(); |
| resource_provider->RemoveImportedResource(resource_id_); |
| resource_id_ = 0; |
| } |
| } |
| |
| } // namespace cc |