| // 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/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" |
| #include "cc/trees/occlusion.h" |
| #include "ui/gfx/geometry/rect_conversions.h" |
| |
| namespace cc { |
| |
| DelegatedRendererLayerImpl::DelegatedRendererLayerImpl(LayerTreeImpl* tree_impl, |
| int id) |
| : LayerImpl(tree_impl, id), |
| have_render_passes_to_push_(false), |
| inverse_device_scale_factor_(1.0f), |
| child_id_(0), |
| own_child_id_(false) { |
| } |
| |
| DelegatedRendererLayerImpl::~DelegatedRendererLayerImpl() { |
| ClearRenderPasses(); |
| ClearChildId(); |
| } |
| |
| bool DelegatedRendererLayerImpl::HasDelegatedContent() const { return true; } |
| |
| 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::ResourceIdArray* resources_in_frame, |
| 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; |
| resources_in_frame->push_back(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->inverse_device_scale_factor_ = inverse_device_scale_factor_; |
| delegated_layer->child_id_ = child_id_; |
| delegated_layer->own_child_id_ = true; |
| own_child_id_ = false; |
| |
| 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 resources are added to the |
| // ResourceProvider in the pending tree. |
| delegated_layer->resources_ = resources_; |
| } |
| |
| void DelegatedRendererLayerImpl::CreateChildIdIfNeeded( |
| const ReturnCallback& return_callback) { |
| if (child_id_) |
| return; |
| |
| ResourceProvider* resource_provider = layer_tree_impl()->resource_provider(); |
| child_id_ = resource_provider->CreateChild(return_callback); |
| own_child_id_ = true; |
| } |
| |
| void DelegatedRendererLayerImpl::SetFrameData( |
| const DelegatedFrameData* frame_data, |
| const gfx::RectF& damage_in_frame) { |
| DCHECK(child_id_) << "CreateChildIdIfNeeded must be called first."; |
| DCHECK(frame_data); |
| DCHECK(!frame_data->render_pass_list.empty()); |
| // A frame with an empty root render pass is invalid. |
| DCHECK(!frame_data->render_pass_list.back()->output_rect.IsEmpty()); |
| |
| 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); |
| |
| RenderPassList render_pass_list; |
| RenderPass::CopyAll(frame_data->render_pass_list, &render_pass_list); |
| |
| bool invalid_frame = false; |
| ResourceProvider::ResourceIdArray resources_in_frame; |
| DrawQuad::ResourceIteratorCallback remap_resources_to_parent_callback = |
| base::Bind(&ResourceRemapHelper, |
| &invalid_frame, |
| resource_map, |
| &resources_in_frame); |
| for (const auto& pass : render_pass_list) { |
| for (const auto& quad : pass->quad_list) |
| quad->IterateResources(remap_resources_to_parent_callback); |
| } |
| |
| if (invalid_frame) { |
| // Declare we are still using the last frame's resources. |
| resource_provider->DeclareUsedResourcesFromChild(child_id_, resources_); |
| return; |
| } |
| |
| // Declare we are using the new frame's resources. |
| resources_.swap(resources_in_frame); |
| resource_provider->DeclareUsedResourcesFromChild(child_id_, resources_); |
| |
| inverse_device_scale_factor_ = 1.0f / frame_data->device_scale_factor; |
| // Display size is already set so we can compute what the damage rect |
| // will be in layer space. The damage may exceed the visible portion of |
| // the frame, so intersect the damage to the layer's bounds. |
| RenderPass* new_root_pass = render_pass_list.back(); |
| gfx::Size frame_size = new_root_pass->output_rect.size(); |
| gfx::RectF damage_in_layer = damage_in_frame; |
| damage_in_layer.Scale(inverse_device_scale_factor_); |
| SetUpdateRect(gfx::IntersectRects( |
| gfx::UnionRects(update_rect(), gfx::ToEnclosingRect(damage_in_layer)), |
| gfx::Rect(bounds()))); |
| |
| SetRenderPasses(&render_pass_list); |
| have_render_passes_to_push_ = true; |
| } |
| |
| void DelegatedRendererLayerImpl::SetRenderPasses( |
| RenderPassList* render_passes_in_draw_order) { |
| ClearRenderPasses(); |
| |
| for (size_t i = 0; i < render_passes_in_draw_order->size(); ++i) { |
| RenderPassList::iterator to_take = |
| render_passes_in_draw_order->begin() + i; |
| render_passes_index_by_id_.insert( |
| std::pair<RenderPassId, 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()); |
| } |
| |
| // Give back an empty array instead of nulls. |
| render_passes_in_draw_order->clear(); |
| } |
| |
| void DelegatedRendererLayerImpl::ClearRenderPasses() { |
| 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()); |
| } |
| |
| void DelegatedRendererLayerImpl::ReleaseResources() { |
| ClearRenderPasses(); |
| ClearChildId(); |
| } |
| |
| static inline int IndexToId(int index) { return index + 1; } |
| static inline int IdToIndex(int id) { return id - 1; } |
| |
| RenderPassId DelegatedRendererLayerImpl::FirstContributingRenderPassId() const { |
| return RenderPassId(id(), IndexToId(0)); |
| } |
| |
| RenderPassId DelegatedRendererLayerImpl::NextContributingRenderPassId( |
| RenderPassId previous) const { |
| return RenderPassId(previous.layer_id, previous.index + 1); |
| } |
| |
| bool DelegatedRendererLayerImpl::ConvertDelegatedRenderPassId( |
| RenderPassId delegated_render_pass_id, |
| RenderPassId* output_render_pass_id) const { |
| base::hash_map<RenderPassId, int>::const_iterator found = |
| render_passes_index_by_id_.find(delegated_render_pass_id); |
| if (found == render_passes_index_by_id_.end()) { |
| // Be robust against a RenderPass id that isn't part of the frame. |
| return false; |
| } |
| unsigned delegated_render_pass_index = found->second; |
| *output_render_pass_id = |
| RenderPassId(id(), IndexToId(delegated_render_pass_index)); |
| return true; |
| } |
| |
| void DelegatedRendererLayerImpl::AppendContributingRenderPasses( |
| RenderPassSink* render_pass_sink) { |
| DCHECK(HasContributingDelegatedRenderPasses()); |
| |
| const RenderPass* root_delegated_render_pass = |
| render_passes_in_draw_order_.back(); |
| gfx::Size frame_size = root_delegated_render_pass->output_rect.size(); |
| gfx::Transform delegated_frame_to_root_transform = screen_space_transform(); |
| delegated_frame_to_root_transform.Scale(inverse_device_scale_factor_, |
| inverse_device_scale_factor_); |
| |
| for (size_t i = 0; i < render_passes_in_draw_order_.size() - 1; ++i) { |
| RenderPassId output_render_pass_id(-1, -1); |
| bool present = |
| ConvertDelegatedRenderPassId(render_passes_in_draw_order_[i]->id, |
| &output_render_pass_id); |
| |
| // Don't clash with the RenderPass we generate if we own a RenderSurface. |
| DCHECK(present) << render_passes_in_draw_order_[i]->id.layer_id << ", " |
| << render_passes_in_draw_order_[i]->id.index; |
| DCHECK_GT(output_render_pass_id.index, 0); |
| |
| scoped_ptr<RenderPass> copy_pass = |
| render_passes_in_draw_order_[i]->Copy(output_render_pass_id); |
| copy_pass->transform_to_root_target.ConcatTransform( |
| delegated_frame_to_root_transform); |
| render_pass_sink->AppendRenderPass(copy_pass.Pass()); |
| } |
| } |
| |
| 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( |
| RenderPass* render_pass, |
| const Occlusion& occlusion_in_content_space, |
| AppendQuadsData* append_quads_data) { |
| AppendRainbowDebugBorder(render_pass); |
| |
| // This list will be empty after a lost context until a new frame arrives. |
| if (render_passes_in_draw_order_.empty()) |
| return; |
| |
| RenderPassId target_render_pass_id = 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 RenderPassId is 0, then it is a RenderPass generated |
| // for a layer in this compositor, not the delegating renderer. Then we want |
| // to merge our root RenderPass with the target RenderPass. Otherwise, it is |
| // some RenderPass which we added from the delegating 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 by our |
| // render_target. |
| DCHECK(target_render_pass_id.layer_id == render_target()->id()); |
| |
| AppendRenderPassQuads(render_pass, |
| occlusion_in_content_space, |
| 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(render_pass, |
| occlusion_in_content_space, |
| delegated_render_pass, |
| frame_size); |
| } |
| } |
| |
| void DelegatedRendererLayerImpl::AppendRainbowDebugBorder( |
| RenderPass* render_pass) { |
| if (!ShowDebugBorders()) |
| return; |
| |
| SharedQuadState* shared_quad_state = |
| render_pass->CreateAndAppendSharedQuadState(); |
| PopulateSharedQuadState(shared_quad_state); |
| |
| 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()) { |
| SolidColorDrawQuad* top_quad = |
| render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>(); |
| top_quad->SetNew( |
| shared_quad_state, top, top, colors[i % kNumColors], false); |
| |
| SolidColorDrawQuad* bottom_quad = |
| render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>(); |
| bottom_quad->SetNew(shared_quad_state, |
| bottom, |
| bottom, |
| colors[kNumColors - 1 - (i % kNumColors)], |
| false); |
| } |
| if (!left.IsEmpty()) { |
| SolidColorDrawQuad* left_quad = |
| render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>(); |
| left_quad->SetNew(shared_quad_state, |
| left, |
| left, |
| colors[kNumColors - 1 - (i % kNumColors)], |
| false); |
| |
| SolidColorDrawQuad* right_quad = |
| render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>(); |
| right_quad->SetNew( |
| shared_quad_state, right, right, colors[i % kNumColors], false); |
| } |
| } |
| } |
| |
| void DelegatedRendererLayerImpl::AppendRenderPassQuads( |
| RenderPass* render_pass, |
| const Occlusion& occlusion_in_content_space, |
| const RenderPass* delegated_render_pass, |
| const gfx::Size& frame_size) const { |
| const SharedQuadState* delegated_shared_quad_state = nullptr; |
| SharedQuadState* output_shared_quad_state = nullptr; |
| |
| for (const auto& delegated_quad : delegated_render_pass->quad_list) { |
| bool is_root_delegated_render_pass = |
| delegated_render_pass == render_passes_in_draw_order_.back(); |
| |
| if (delegated_quad->shared_quad_state != delegated_shared_quad_state) { |
| delegated_shared_quad_state = delegated_quad->shared_quad_state; |
| output_shared_quad_state = render_pass->CreateAndAppendSharedQuadState(); |
| output_shared_quad_state->CopyFrom(delegated_shared_quad_state); |
| |
| if (is_root_delegated_render_pass) { |
| gfx::Transform delegated_frame_to_target_transform = draw_transform(); |
| delegated_frame_to_target_transform.Scale(inverse_device_scale_factor_, |
| inverse_device_scale_factor_); |
| |
| output_shared_quad_state->content_to_target_transform.ConcatTransform( |
| delegated_frame_to_target_transform); |
| |
| if (render_target() == this) { |
| DCHECK(!is_clipped()); |
| DCHECK(render_surface()); |
| DCHECK_EQ(0, num_unclipped_descendants()); |
| output_shared_quad_state->clip_rect = |
| MathUtil::MapEnclosingClippedRect( |
| 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::MapEnclosingClippedRect( |
| 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); |
| |
| gfx::Transform quad_content_to_delegated_target_space = |
| output_shared_quad_state->content_to_target_transform; |
| if (!is_root_delegated_render_pass) { |
| quad_content_to_delegated_target_space.ConcatTransform( |
| delegated_render_pass->transform_to_root_target); |
| quad_content_to_delegated_target_space.ConcatTransform(draw_transform()); |
| } |
| |
| Occlusion occlusion_in_quad_space = |
| occlusion_in_content_space.GetOcclusionWithGivenDrawTransform( |
| quad_content_to_delegated_target_space); |
| |
| gfx::Rect quad_visible_rect = |
| occlusion_in_quad_space.GetUnoccludedContentRect( |
| delegated_quad->visible_rect); |
| |
| if (quad_visible_rect.IsEmpty()) |
| continue; |
| |
| if (delegated_quad->material != DrawQuad::RENDER_PASS) { |
| DrawQuad* output_quad = render_pass->CopyFromAndAppendDrawQuad( |
| delegated_quad, output_shared_quad_state); |
| output_quad->visible_rect = quad_visible_rect; |
| } else { |
| RenderPassId delegated_contributing_render_pass_id = |
| RenderPassDrawQuad::MaterialCast(delegated_quad)->render_pass_id; |
| RenderPassId output_contributing_render_pass_id(-1, -1); |
| |
| bool present = |
| ConvertDelegatedRenderPassId(delegated_contributing_render_pass_id, |
| &output_contributing_render_pass_id); |
| |
| // The frame may have a RenderPassDrawQuad that points to a RenderPass not |
| // part of the frame. Just ignore these quads. |
| if (present) { |
| DCHECK(output_contributing_render_pass_id != render_pass->id); |
| |
| RenderPassDrawQuad* output_quad = |
| render_pass->CopyFromAndAppendRenderPassDrawQuad( |
| RenderPassDrawQuad::MaterialCast(delegated_quad), |
| output_shared_quad_state, |
| output_contributing_render_pass_id); |
| output_quad->visible_rect = quad_visible_rect; |
| } |
| } |
| } |
| } |
| |
| const char* DelegatedRendererLayerImpl::LayerTypeAsString() const { |
| return "cc::DelegatedRendererLayerImpl"; |
| } |
| |
| void DelegatedRendererLayerImpl::ClearChildId() { |
| if (!child_id_) |
| return; |
| |
| if (own_child_id_) { |
| ResourceProvider* provider = layer_tree_impl()->resource_provider(); |
| provider->DestroyChild(child_id_); |
| } |
| |
| resources_.clear(); |
| child_id_ = 0; |
| } |
| |
| } // namespace cc |
