| // 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. |
| |
| #include "cc/layers/delegated_renderer_layer_impl.h" |
| |
| #include <algorithm> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/containers/hash_tables.h" |
| #include "cc/base/math_util.h" |
| #include "cc/layers/append_quads_data.h" |
| #include "cc/layers/quad_sink.h" |
| #include "cc/layers/render_pass_sink.h" |
| #include "cc/output/delegated_frame_data.h" |
| #include "cc/quads/render_pass_draw_quad.h" |
| #include "cc/quads/solid_color_draw_quad.h" |
| #include "cc/trees/layer_tree_impl.h" |
| |
| namespace cc { |
| |
| DelegatedRendererLayerImpl::DelegatedRendererLayerImpl( |
| LayerTreeImpl* tree_impl, int id) |
| : LayerImpl(tree_impl, id), |
| have_render_passes_to_push_(false), |
| child_id_(0), |
| own_child_id_(false) { |
| } |
| |
| DelegatedRendererLayerImpl::~DelegatedRendererLayerImpl() { |
| ClearRenderPasses(); |
| ClearChildId(); |
| } |
| |
| bool DelegatedRendererLayerImpl::HasDelegatedContent() const { |
| return !render_passes_in_draw_order_.empty(); |
| } |
| |
| bool DelegatedRendererLayerImpl::HasContributingDelegatedRenderPasses() const { |
| // The root RenderPass for the layer is merged with its target |
| // RenderPass in each frame. So we only have extra RenderPasses |
| // to merge when we have a non-root RenderPass present. |
| return render_passes_in_draw_order_.size() > 1; |
| } |
| |
| static ResourceProvider::ResourceId ResourceRemapHelper( |
| bool* invalid_frame, |
| const ResourceProvider::ResourceIdMap& child_to_parent_map, |
| ResourceProvider::ResourceIdSet *remapped_resources, |
| ResourceProvider::ResourceId id) { |
| |
| ResourceProvider::ResourceIdMap::const_iterator it = |
| child_to_parent_map.find(id); |
| if (it == child_to_parent_map.end()) { |
| *invalid_frame = true; |
| return 0; |
| } |
| |
| DCHECK_EQ(it->first, id); |
| ResourceProvider::ResourceId remapped_id = it->second; |
| remapped_resources->insert(remapped_id); |
| return remapped_id; |
| } |
| |
| void DelegatedRendererLayerImpl::PushPropertiesTo(LayerImpl* layer) { |
| LayerImpl::PushPropertiesTo(layer); |
| |
| DelegatedRendererLayerImpl* delegated_layer = |
| static_cast<DelegatedRendererLayerImpl*>(layer); |
| |
| // If we have a new child_id to give to the active layer, it should |
| // have already deleted its old child_id. |
| DCHECK(delegated_layer->child_id_ == 0 || |
| delegated_layer->child_id_ == child_id_); |
| delegated_layer->child_id_ = child_id_; |
| delegated_layer->own_child_id_ = true; |
| own_child_id_ = false; |
| |
| delegated_layer->SetDisplaySize(display_size_); |
| if (have_render_passes_to_push_) { |
| // This passes ownership of the render passes to the active tree. |
| delegated_layer->SetRenderPasses(&render_passes_in_draw_order_); |
| DCHECK(render_passes_in_draw_order_.empty()); |
| have_render_passes_to_push_ = false; |
| } |
| |
| // This is just a copy for testing since we keep the data on the pending layer |
| // for returning resources to the child for now. |
| delegated_layer->resources_ = resources_; |
| } |
| |
| void DelegatedRendererLayerImpl::SetFrameData( |
| scoped_ptr<DelegatedFrameData> frame_data, |
| gfx::RectF damage_in_frame) { |
| DCHECK(frame_data); |
| |
| // A frame with an empty root render pass is invalid. |
| DCHECK(frame_data->render_pass_list.empty() || |
| !frame_data->render_pass_list.back()->output_rect.IsEmpty()); |
| |
| CreateChildIdIfNeeded(); |
| DCHECK(child_id_); |
| |
| ResourceProvider* resource_provider = layer_tree_impl()->resource_provider(); |
| const ResourceProvider::ResourceIdMap& resource_map = |
| resource_provider->GetChildToParentMap(child_id_); |
| |
| resource_provider->ReceiveFromChild(child_id_, frame_data->resource_list); |
| |
| bool invalid_frame = false; |
| ResourceProvider::ResourceIdSet used_resources; |
| DrawQuad::ResourceIteratorCallback remap_resources_to_parent_callback = |
| base::Bind(&ResourceRemapHelper, |
| &invalid_frame, |
| resource_map, |
| &used_resources); |
| for (size_t i = 0; i < frame_data->render_pass_list.size(); ++i) { |
| RenderPass* pass = frame_data->render_pass_list[i]; |
| for (size_t j = 0; j < pass->quad_list.size(); ++j) { |
| DrawQuad* quad = pass->quad_list[j]; |
| quad->IterateResources(remap_resources_to_parent_callback); |
| } |
| } |
| |
| if (invalid_frame) |
| return; |
| |
| // Display size is already set so we can compute what the damage rect |
| // will be in layer space. |
| if (!frame_data->render_pass_list.empty()) { |
| RenderPass* new_root_pass = frame_data->render_pass_list.back(); |
| gfx::RectF damage_in_layer = MathUtil::MapClippedRect( |
| DelegatedFrameToLayerSpaceTransform( |
| new_root_pass->output_rect.size()), |
| damage_in_frame); |
| set_update_rect(gfx::UnionRects(update_rect(), damage_in_layer)); |
| } |
| |
| // Save the remapped quads on the layer. This steals the quads and render |
| // passes from the frame_data. |
| SetRenderPasses(&frame_data->render_pass_list); |
| resources_.swap(used_resources); |
| have_render_passes_to_push_ = true; |
| } |
| |
| void DelegatedRendererLayerImpl::CollectUnusedResources( |
| TransferableResourceArray* resources_for_ack) { |
| CreateChildIdIfNeeded(); |
| DCHECK(child_id_); |
| |
| ResourceProvider* resource_provider = layer_tree_impl()->resource_provider(); |
| const ResourceProvider::ResourceIdMap& resource_map = |
| resource_provider->GetChildToParentMap(child_id_); |
| |
| ResourceProvider::ResourceIdArray unused_resources; |
| for (ResourceProvider::ResourceIdMap::const_iterator it = |
| resource_map.begin(); |
| it != resource_map.end(); |
| ++it) { |
| bool resource_is_in_current_frame = resources_.count(it->second) > 0; |
| bool resource_is_in_use = resource_provider->InUseByConsumer(it->second); |
| if (!resource_is_in_current_frame && !resource_is_in_use) |
| unused_resources.push_back(it->second); |
| } |
| resource_provider->PrepareSendToChild( |
| child_id_, unused_resources, resources_for_ack); |
| } |
| |
| void DelegatedRendererLayerImpl::SetDisplaySize(gfx::Size size) { |
| if (display_size_ == size) |
| return; |
| display_size_ = size; |
| NoteLayerPropertyChanged(); |
| } |
| |
| void DelegatedRendererLayerImpl::SetRenderPasses( |
| ScopedPtrVector<RenderPass>* render_passes_in_draw_order) { |
| gfx::RectF old_root_damage; |
| if (!render_passes_in_draw_order_.empty()) |
| old_root_damage = render_passes_in_draw_order_.back()->damage_rect; |
| |
| ClearRenderPasses(); |
| |
| for (size_t i = 0; i < render_passes_in_draw_order->size(); ++i) { |
| ScopedPtrVector<RenderPass>::iterator to_take = |
| render_passes_in_draw_order->begin() + i; |
| render_passes_index_by_id_.insert( |
| std::pair<RenderPass::Id, int>((*to_take)->id, i)); |
| scoped_ptr<RenderPass> taken_render_pass = |
| render_passes_in_draw_order->take(to_take); |
| render_passes_in_draw_order_.push_back(taken_render_pass.Pass()); |
| } |
| |
| if (!render_passes_in_draw_order_.empty()) |
| render_passes_in_draw_order_.back()->damage_rect.Union(old_root_damage); |
| |
| // Give back an empty array instead of nulls. |
| render_passes_in_draw_order->clear(); |
| } |
| |
| void DelegatedRendererLayerImpl::ClearRenderPasses() { |
| // TODO(danakj): Release the resources back to the nested compositor. |
| render_passes_index_by_id_.clear(); |
| render_passes_in_draw_order_.clear(); |
| } |
| |
| scoped_ptr<LayerImpl> DelegatedRendererLayerImpl::CreateLayerImpl( |
| LayerTreeImpl* tree_impl) { |
| return DelegatedRendererLayerImpl::Create( |
| tree_impl, id()).PassAs<LayerImpl>(); |
| } |
| |
| void DelegatedRendererLayerImpl::DidLoseOutputSurface() { |
| ClearRenderPasses(); |
| ClearChildId(); |
| } |
| |
| gfx::Transform DelegatedRendererLayerImpl::DelegatedFrameToLayerSpaceTransform( |
| gfx::Size frame_size) const { |
| gfx::Size display_size = display_size_.IsEmpty() ? bounds() : display_size_; |
| |
| gfx::Transform delegated_frame_to_layer_space_transform; |
| delegated_frame_to_layer_space_transform.Scale( |
| static_cast<double>(display_size.width()) / frame_size.width(), |
| static_cast<double>(display_size.height()) / frame_size.height()); |
| return delegated_frame_to_layer_space_transform; |
| } |
| |
| static inline int IndexToId(int index) { return index + 1; } |
| static inline int IdToIndex(int id) { return id - 1; } |
| |
| RenderPass::Id DelegatedRendererLayerImpl::FirstContributingRenderPassId() |
| const { |
| return RenderPass::Id(id(), IndexToId(0)); |
| } |
| |
| RenderPass::Id DelegatedRendererLayerImpl::NextContributingRenderPassId( |
| RenderPass::Id previous) const { |
| return RenderPass::Id(previous.layer_id, previous.index + 1); |
| } |
| |
| RenderPass::Id DelegatedRendererLayerImpl::ConvertDelegatedRenderPassId( |
| RenderPass::Id delegated_render_pass_id) const { |
| base::hash_map<RenderPass::Id, int>::const_iterator found = |
| render_passes_index_by_id_.find(delegated_render_pass_id); |
| DCHECK(found != render_passes_index_by_id_.end()); |
| unsigned delegated_render_pass_index = found->second; |
| return RenderPass::Id(id(), IndexToId(delegated_render_pass_index)); |
| } |
| |
| void DelegatedRendererLayerImpl::AppendContributingRenderPasses( |
| RenderPassSink* render_pass_sink) { |
| DCHECK(HasContributingDelegatedRenderPasses()); |
| |
| for (size_t i = 0; i < render_passes_in_draw_order_.size() - 1; ++i) { |
| RenderPass::Id output_render_pass_id = |
| ConvertDelegatedRenderPassId(render_passes_in_draw_order_[i]->id); |
| |
| // Don't clash with the RenderPass we generate if we own a RenderSurface. |
| DCHECK_GT(output_render_pass_id.index, 0); |
| |
| render_pass_sink->AppendRenderPass( |
| render_passes_in_draw_order_[i]->Copy(output_render_pass_id)); |
| } |
| } |
| |
| bool DelegatedRendererLayerImpl::WillDraw(DrawMode draw_mode, |
| ResourceProvider* resource_provider) { |
| if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE) |
| return false; |
| return LayerImpl::WillDraw(draw_mode, resource_provider); |
| } |
| |
| void DelegatedRendererLayerImpl::AppendQuads( |
| QuadSink* quad_sink, |
| AppendQuadsData* append_quads_data) { |
| AppendRainbowDebugBorder(quad_sink, append_quads_data); |
| |
| if (render_passes_in_draw_order_.empty()) |
| return; |
| |
| RenderPass::Id target_render_pass_id = append_quads_data->render_pass_id; |
| |
| const RenderPass* root_delegated_render_pass = |
| render_passes_in_draw_order_.back(); |
| |
| DCHECK(root_delegated_render_pass->output_rect.origin().IsOrigin()); |
| gfx::Size frame_size = root_delegated_render_pass->output_rect.size(); |
| |
| // If the index of the EenderPassId is 0, then it is a RenderPass generated |
| // for a layer in this compositor, not the delegated renderer. Then we want to |
| // merge our root RenderPass with the target RenderPass. Otherwise, it is some |
| // RenderPass which we added from the delegated renderer. |
| bool should_merge_root_render_pass_with_target = !target_render_pass_id.index; |
| if (should_merge_root_render_pass_with_target) { |
| // Verify that the RenderPass we are appending to is created our |
| // render_target. |
| DCHECK(target_render_pass_id.layer_id == render_target()->id()); |
| |
| AppendRenderPassQuads( |
| quad_sink, append_quads_data, root_delegated_render_pass, frame_size); |
| } else { |
| // Verify that the RenderPass we are appending to was created by us. |
| DCHECK(target_render_pass_id.layer_id == id()); |
| |
| int render_pass_index = IdToIndex(target_render_pass_id.index); |
| const RenderPass* delegated_render_pass = |
| render_passes_in_draw_order_[render_pass_index]; |
| AppendRenderPassQuads( |
| quad_sink, append_quads_data, delegated_render_pass, frame_size); |
| } |
| } |
| |
| void DelegatedRendererLayerImpl::AppendRainbowDebugBorder( |
| QuadSink* quad_sink, |
| AppendQuadsData* append_quads_data) { |
| if (!ShowDebugBorders()) |
| return; |
| |
| SharedQuadState* shared_quad_state = |
| quad_sink->UseSharedQuadState(CreateSharedQuadState()); |
| |
| SkColor color; |
| float border_width; |
| GetDebugBorderProperties(&color, &border_width); |
| |
| SkColor colors[] = { |
| 0x80ff0000, // Red. |
| 0x80ffa500, // Orange. |
| 0x80ffff00, // Yellow. |
| 0x80008000, // Green. |
| 0x800000ff, // Blue. |
| 0x80ee82ee, // Violet. |
| }; |
| const int kNumColors = arraysize(colors); |
| |
| const int kStripeWidth = 300; |
| const int kStripeHeight = 300; |
| |
| for (size_t i = 0; ; ++i) { |
| // For horizontal lines. |
| int x = kStripeWidth * i; |
| int width = std::min(kStripeWidth, content_bounds().width() - x - 1); |
| |
| // For vertical lines. |
| int y = kStripeHeight * i; |
| int height = std::min(kStripeHeight, content_bounds().height() - y - 1); |
| |
| gfx::Rect top(x, 0, width, border_width); |
| gfx::Rect bottom(x, |
| content_bounds().height() - border_width, |
| width, |
| border_width); |
| gfx::Rect left(0, y, border_width, height); |
| gfx::Rect right(content_bounds().width() - border_width, |
| y, |
| border_width, |
| height); |
| |
| if (top.IsEmpty() && left.IsEmpty()) |
| break; |
| |
| if (!top.IsEmpty()) { |
| scoped_ptr<SolidColorDrawQuad> top_quad = SolidColorDrawQuad::Create(); |
| top_quad->SetNew(shared_quad_state, top, colors[i % kNumColors], false); |
| quad_sink->Append(top_quad.PassAs<DrawQuad>(), append_quads_data); |
| |
| scoped_ptr<SolidColorDrawQuad> bottom_quad = SolidColorDrawQuad::Create(); |
| bottom_quad->SetNew(shared_quad_state, |
| bottom, |
| colors[kNumColors - 1 - (i % kNumColors)], |
| false); |
| quad_sink->Append(bottom_quad.PassAs<DrawQuad>(), append_quads_data); |
| } |
| if (!left.IsEmpty()) { |
| scoped_ptr<SolidColorDrawQuad> left_quad = SolidColorDrawQuad::Create(); |
| left_quad->SetNew(shared_quad_state, |
| left, |
| colors[kNumColors - 1 - (i % kNumColors)], |
| false); |
| quad_sink->Append(left_quad.PassAs<DrawQuad>(), append_quads_data); |
| |
| scoped_ptr<SolidColorDrawQuad> right_quad = SolidColorDrawQuad::Create(); |
| right_quad->SetNew( |
| shared_quad_state, right, colors[i % kNumColors], false); |
| quad_sink->Append(right_quad.PassAs<DrawQuad>(), append_quads_data); |
| } |
| } |
| } |
| |
| void DelegatedRendererLayerImpl::AppendRenderPassQuads( |
| QuadSink* quad_sink, |
| AppendQuadsData* append_quads_data, |
| const RenderPass* delegated_render_pass, |
| gfx::Size frame_size) const { |
| |
| const SharedQuadState* delegated_shared_quad_state = NULL; |
| SharedQuadState* output_shared_quad_state = NULL; |
| |
| for (size_t i = 0; i < delegated_render_pass->quad_list.size(); ++i) { |
| const DrawQuad* delegated_quad = delegated_render_pass->quad_list[i]; |
| |
| if (delegated_quad->shared_quad_state != delegated_shared_quad_state) { |
| delegated_shared_quad_state = delegated_quad->shared_quad_state; |
| output_shared_quad_state = quad_sink->UseSharedQuadState( |
| delegated_shared_quad_state->Copy()); |
| |
| bool is_root_delegated_render_pass = |
| delegated_render_pass == render_passes_in_draw_order_.back(); |
| if (is_root_delegated_render_pass) { |
| // Don't allow areas inside the bounds that are empty. |
| DCHECK(display_size_.IsEmpty() || |
| gfx::Rect(display_size_).Contains(gfx::Rect(bounds()))); |
| gfx::Transform delegated_frame_to_target_transform = |
| draw_transform() * DelegatedFrameToLayerSpaceTransform(frame_size); |
| |
| output_shared_quad_state->content_to_target_transform.ConcatTransform( |
| delegated_frame_to_target_transform); |
| |
| if (render_target() == this) { |
| DCHECK(!is_clipped()); |
| DCHECK(render_surface()); |
| output_shared_quad_state->clip_rect = MathUtil::MapClippedRect( |
| delegated_frame_to_target_transform, |
| output_shared_quad_state->clip_rect); |
| } else { |
| gfx::Rect clip_rect = drawable_content_rect(); |
| if (output_shared_quad_state->is_clipped) { |
| clip_rect.Intersect(MathUtil::MapClippedRect( |
| delegated_frame_to_target_transform, |
| output_shared_quad_state->clip_rect)); |
| } |
| output_shared_quad_state->clip_rect = clip_rect; |
| output_shared_quad_state->is_clipped = true; |
| } |
| |
| output_shared_quad_state->opacity *= draw_opacity(); |
| } |
| } |
| DCHECK(output_shared_quad_state); |
| |
| scoped_ptr<DrawQuad> output_quad; |
| if (delegated_quad->material != DrawQuad::RENDER_PASS) { |
| output_quad = delegated_quad->Copy(output_shared_quad_state); |
| } else { |
| RenderPass::Id delegated_contributing_render_pass_id = |
| RenderPassDrawQuad::MaterialCast(delegated_quad)->render_pass_id; |
| RenderPass::Id output_contributing_render_pass_id = |
| ConvertDelegatedRenderPassId(delegated_contributing_render_pass_id); |
| DCHECK(output_contributing_render_pass_id != |
| append_quads_data->render_pass_id); |
| |
| output_quad = RenderPassDrawQuad::MaterialCast(delegated_quad)->Copy( |
| output_shared_quad_state, |
| output_contributing_render_pass_id).PassAs<DrawQuad>(); |
| } |
| DCHECK(output_quad.get()); |
| |
| quad_sink->Append(output_quad.Pass(), append_quads_data); |
| } |
| } |
| |
| const char* DelegatedRendererLayerImpl::LayerTypeAsString() const { |
| return "cc::DelegatedRendererLayerImpl"; |
| } |
| |
| void DelegatedRendererLayerImpl::CreateChildIdIfNeeded() { |
| if (child_id_) |
| return; |
| |
| ResourceProvider* resource_provider = layer_tree_impl()->resource_provider(); |
| child_id_ = resource_provider->CreateChild(); |
| own_child_id_ = true; |
| } |
| |
| void DelegatedRendererLayerImpl::ClearChildId() { |
| if (!child_id_) |
| return; |
| |
| if (own_child_id_) { |
| ResourceProvider* provider = layer_tree_impl()->resource_provider(); |
| provider->DestroyChild(child_id_); |
| } |
| |
| child_id_ = 0; |
| } |
| |
| } // namespace cc |