| // 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/delegated_renderer_layer_impl.h" |
| |
| #include "base/bind.h" |
| #include "cc/append_quads_data.h" |
| #include "cc/delegated_frame_data.h" |
| #include "cc/layer_tree_impl.h" |
| #include "cc/math_util.h" |
| #include "cc/quad_sink.h" |
| #include "cc/render_pass_draw_quad.h" |
| #include "cc/render_pass_sink.h" |
| |
| namespace cc { |
| |
| DelegatedRendererLayerImpl::DelegatedRendererLayerImpl( |
| LayerTreeImpl* tree_impl, int id) |
| : LayerImpl(tree_impl, id), |
| child_id_(0) { |
| } |
| |
| 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(it->first == id); |
| ResourceProvider::ResourceId remapped_id = it->second; |
| remapped_resources->insert(remapped_id); |
| return remapped_id; |
| } |
| |
| void DelegatedRendererLayerImpl::SetFrameData( |
| scoped_ptr<DelegatedFrameData> frame_data, |
| gfx::RectF damage_in_frame, |
| TransferableResourceArray* resources_for_ack) { |
| CreateChildIdIfNeeded(); |
| DCHECK(child_id_); |
| |
| ResourceProvider* resource_provider = layerTreeImpl()->resource_provider(); |
| const ResourceProvider::ResourceIdMap& resource_map = |
| resource_provider->GetChildToParentMap(child_id_); |
| |
| if (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()); |
| |
| // 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); |
| setUpdateRect(gfx::UnionRects(updateRect(), damage_in_layer)); |
| } |
| |
| 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) { |
| // 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); |
| } |
| } |
| |
| 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); |
| 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); |
| } |
| |
| void DelegatedRendererLayerImpl::ClearRenderPasses() { |
| // FIXME: 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* treeImpl) { |
| return DelegatedRendererLayerImpl::Create(treeImpl, 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 delegatedRenderPassIndex = found->second; |
| return RenderPass::Id(id(), IndexToId(delegatedRenderPassIndex)); |
| } |
| |
| 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(output_render_pass_id.index > 0); |
| |
| render_pass_sink->appendRenderPass( |
| render_passes_in_draw_order_[i]->Copy(output_render_pass_id)); |
| } |
| } |
| |
| void DelegatedRendererLayerImpl::appendQuads( |
| QuadSink& quad_sink, AppendQuadsData& append_quads_data) { |
| if (render_passes_in_draw_order_.empty()) |
| return; |
| |
| RenderPass::Id target_render_pass_id = append_quads_data.renderPassId; |
| |
| 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 renderPassId 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 |
| // renderTarget. |
| DCHECK(target_render_pass_id.layer_id == renderTarget()->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::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 = |
| drawTransform() * DelegatedFrameToLayerSpaceTransform(frame_size); |
| |
| output_shared_quad_state->content_to_target_transform.ConcatTransform( |
| delegated_frame_to_target_transform); |
| |
| if (renderTarget() == this) { |
| DCHECK(!isClipped()); |
| DCHECK(renderSurface()); |
| output_shared_quad_state->clip_rect = MathUtil::mapClippedRect( |
| delegated_frame_to_target_transform, |
| output_shared_quad_state->clip_rect); |
| } else { |
| gfx::Rect clip_rect = drawableContentRect(); |
| 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 *= drawOpacity(); |
| } |
| } |
| 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->renderPassId); |
| |
| 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 "DelegatedRendererLayer"; |
| } |
| |
| void DelegatedRendererLayerImpl::CreateChildIdIfNeeded() { |
| if (child_id_) |
| return; |
| |
| ResourceProvider* resource_provider = layerTreeImpl()->resource_provider(); |
| child_id_ = resource_provider->CreateChild(); |
| } |
| |
| void DelegatedRendererLayerImpl::ClearChildId() { |
| if (!child_id_) |
| return; |
| |
| ResourceProvider* resource_provider = layerTreeImpl()->resource_provider(); |
| resource_provider->DestroyChild(child_id_); |
| child_id_ = 0; |
| } |
| |
| } // namespace cc |