Viet-Trung Luu | 10a7c80 | 2015-12-17 13:22:47 -0800 | [diff] [blame] | 1 | // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "cc/surfaces/surface_aggregator.h" |
| 6 | |
| 7 | #include <map> |
| 8 | |
| 9 | #include "base/bind.h" |
| 10 | #include "base/containers/hash_tables.h" |
| 11 | #include "base/logging.h" |
| 12 | #include "base/trace_event/trace_event.h" |
| 13 | #include "cc/base/math_util.h" |
| 14 | #include "cc/output/compositor_frame.h" |
| 15 | #include "cc/output/delegated_frame_data.h" |
| 16 | #include "cc/quads/draw_quad.h" |
| 17 | #include "cc/quads/render_pass_draw_quad.h" |
| 18 | #include "cc/quads/shared_quad_state.h" |
| 19 | #include "cc/quads/surface_draw_quad.h" |
| 20 | #include "cc/surfaces/surface.h" |
| 21 | #include "cc/surfaces/surface_factory.h" |
| 22 | #include "cc/surfaces/surface_manager.h" |
| 23 | |
| 24 | namespace cc { |
| 25 | namespace { |
| 26 | |
| 27 | void MoveMatchingRequests( |
| 28 | RenderPassId id, |
| 29 | std::multimap<RenderPassId, CopyOutputRequest*>* copy_requests, |
| 30 | ScopedPtrVector<CopyOutputRequest>* output_requests) { |
| 31 | auto request_range = copy_requests->equal_range(id); |
| 32 | for (auto it = request_range.first; it != request_range.second; ++it) { |
| 33 | DCHECK(it->second); |
| 34 | output_requests->push_back(scoped_ptr<CopyOutputRequest>(it->second)); |
| 35 | it->second = nullptr; |
| 36 | } |
| 37 | copy_requests->erase(request_range.first, request_range.second); |
| 38 | } |
| 39 | |
| 40 | } // namespace |
| 41 | |
| 42 | SurfaceAggregator::SurfaceAggregator(SurfaceManager* manager, |
| 43 | ResourceProvider* provider) |
| 44 | : manager_(manager), provider_(provider), next_render_pass_id_(1) { |
| 45 | DCHECK(manager_); |
| 46 | } |
| 47 | |
| 48 | SurfaceAggregator::~SurfaceAggregator() {} |
| 49 | |
| 50 | // Create a clip rect for an aggregated quad from the original clip rect and |
| 51 | // the clip rect from the surface it's on. |
| 52 | SurfaceAggregator::ClipData SurfaceAggregator::CalculateClipRect( |
| 53 | const ClipData& surface_clip, |
| 54 | const ClipData& quad_clip, |
| 55 | const gfx::Transform& content_to_target_transform) { |
| 56 | ClipData out_clip; |
| 57 | if (surface_clip.is_clipped) |
| 58 | out_clip = surface_clip; |
| 59 | |
| 60 | if (quad_clip.is_clipped) { |
| 61 | // TODO(jamesr): This only works if content_to_target_transform maps integer |
| 62 | // rects to integer rects. |
| 63 | gfx::Rect final_clip = MathUtil::MapEnclosingClippedRect( |
| 64 | content_to_target_transform, quad_clip.rect); |
| 65 | if (out_clip.is_clipped) |
| 66 | out_clip.rect.Intersect(final_clip); |
| 67 | else |
| 68 | out_clip.rect = final_clip; |
| 69 | out_clip.is_clipped = true; |
| 70 | } |
| 71 | |
| 72 | return out_clip; |
| 73 | } |
| 74 | |
| 75 | class SurfaceAggregator::RenderPassIdAllocator { |
| 76 | public: |
| 77 | explicit RenderPassIdAllocator(int* next_index) : next_index_(next_index) {} |
| 78 | ~RenderPassIdAllocator() {} |
| 79 | |
| 80 | void AddKnownPass(RenderPassId id) { |
| 81 | if (id_to_index_map_.find(id) != id_to_index_map_.end()) |
| 82 | return; |
| 83 | id_to_index_map_[id] = (*next_index_)++; |
| 84 | } |
| 85 | |
| 86 | RenderPassId Remap(RenderPassId id) { |
| 87 | DCHECK(id_to_index_map_.find(id) != id_to_index_map_.end()); |
| 88 | return RenderPassId(1, id_to_index_map_[id]); |
| 89 | } |
| 90 | |
| 91 | private: |
| 92 | base::hash_map<RenderPassId, int> id_to_index_map_; |
| 93 | int* next_index_; |
| 94 | |
| 95 | DISALLOW_COPY_AND_ASSIGN(RenderPassIdAllocator); |
| 96 | }; |
| 97 | |
| 98 | static void UnrefHelper(base::WeakPtr<SurfaceFactory> surface_factory, |
| 99 | const ReturnedResourceArray& resources, |
| 100 | BlockingTaskRunner* main_thread_task_runner) { |
| 101 | if (surface_factory) |
| 102 | surface_factory->UnrefResources(resources); |
| 103 | } |
| 104 | |
| 105 | RenderPassId SurfaceAggregator::RemapPassId(RenderPassId surface_local_pass_id, |
| 106 | SurfaceId surface_id) { |
| 107 | RenderPassIdAllocator* allocator = render_pass_allocator_map_.get(surface_id); |
| 108 | if (!allocator) { |
| 109 | allocator = new RenderPassIdAllocator(&next_render_pass_id_); |
| 110 | render_pass_allocator_map_.set(surface_id, make_scoped_ptr(allocator)); |
| 111 | } |
| 112 | allocator->AddKnownPass(surface_local_pass_id); |
| 113 | return allocator->Remap(surface_local_pass_id); |
| 114 | } |
| 115 | |
| 116 | int SurfaceAggregator::ChildIdForSurface(Surface* surface) { |
| 117 | SurfaceToResourceChildIdMap::iterator it = |
| 118 | surface_id_to_resource_child_id_.find(surface->surface_id()); |
| 119 | if (it == surface_id_to_resource_child_id_.end()) { |
| 120 | int child_id = |
| 121 | provider_->CreateChild(base::Bind(&UnrefHelper, surface->factory())); |
| 122 | surface_id_to_resource_child_id_[surface->surface_id()] = child_id; |
| 123 | return child_id; |
| 124 | } else { |
| 125 | return it->second; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | static ResourceProvider::ResourceId ResourceRemapHelper( |
| 130 | bool* invalid_frame, |
| 131 | const ResourceProvider::ResourceIdMap& child_to_parent_map, |
| 132 | ResourceProvider::ResourceIdArray* resources_in_frame, |
| 133 | ResourceProvider::ResourceId id) { |
| 134 | ResourceProvider::ResourceIdMap::const_iterator it = |
| 135 | child_to_parent_map.find(id); |
| 136 | if (it == child_to_parent_map.end()) { |
| 137 | *invalid_frame = true; |
| 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | DCHECK_EQ(it->first, id); |
| 142 | ResourceProvider::ResourceId remapped_id = it->second; |
| 143 | resources_in_frame->push_back(id); |
| 144 | return remapped_id; |
| 145 | } |
| 146 | |
| 147 | bool SurfaceAggregator::TakeResources(Surface* surface, |
| 148 | const DelegatedFrameData* frame_data, |
| 149 | RenderPassList* render_pass_list) { |
| 150 | RenderPass::CopyAll(frame_data->render_pass_list, render_pass_list); |
| 151 | if (!provider_) // TODO(jamesr): hack for unit tests that don't set up rp |
| 152 | return false; |
| 153 | |
| 154 | int child_id = ChildIdForSurface(surface); |
| 155 | if (surface->factory()) |
| 156 | surface->factory()->RefResources(frame_data->resource_list); |
| 157 | provider_->ReceiveFromChild(child_id, frame_data->resource_list); |
| 158 | |
| 159 | typedef ResourceProvider::ResourceIdArray IdArray; |
| 160 | IdArray referenced_resources; |
| 161 | |
| 162 | bool invalid_frame = false; |
| 163 | DrawQuad::ResourceIteratorCallback remap = |
| 164 | base::Bind(&ResourceRemapHelper, |
| 165 | &invalid_frame, |
| 166 | provider_->GetChildToParentMap(child_id), |
| 167 | &referenced_resources); |
| 168 | for (const auto& render_pass : *render_pass_list) { |
| 169 | for (const auto& quad : render_pass->quad_list) |
| 170 | quad->IterateResources(remap); |
| 171 | } |
| 172 | |
| 173 | if (!invalid_frame) |
| 174 | provider_->DeclareUsedResourcesFromChild(child_id, referenced_resources); |
| 175 | |
| 176 | return invalid_frame; |
| 177 | } |
| 178 | |
| 179 | gfx::Rect SurfaceAggregator::DamageRectForSurface(const Surface* surface, |
| 180 | const RenderPass& source, |
| 181 | const gfx::Rect& full_rect) { |
| 182 | int previous_index = previous_contained_surfaces_[surface->surface_id()]; |
| 183 | if (previous_index == surface->frame_index()) |
| 184 | return gfx::Rect(); |
| 185 | else if (previous_index == surface->frame_index() - 1) |
| 186 | return source.damage_rect; |
| 187 | return full_rect; |
| 188 | } |
| 189 | |
| 190 | void SurfaceAggregator::HandleSurfaceQuad( |
| 191 | const SurfaceDrawQuad* surface_quad, |
| 192 | const gfx::Transform& content_to_target_transform, |
| 193 | const ClipData& clip_rect, |
| 194 | RenderPass* dest_pass) { |
| 195 | SurfaceId surface_id = surface_quad->surface_id; |
| 196 | // If this surface's id is already in our referenced set then it creates |
| 197 | // a cycle in the graph and should be dropped. |
| 198 | if (referenced_surfaces_.count(surface_id)) |
| 199 | return; |
| 200 | Surface* surface = manager_->GetSurfaceForId(surface_id); |
| 201 | if (!surface) { |
| 202 | contained_surfaces_[surface_id] = 0; |
| 203 | return; |
| 204 | } |
| 205 | contained_surfaces_[surface_id] = surface->frame_index(); |
| 206 | const CompositorFrame* frame = surface->GetEligibleFrame(); |
| 207 | if (!frame) |
| 208 | return; |
| 209 | const DelegatedFrameData* frame_data = frame->delegated_frame_data.get(); |
| 210 | if (!frame_data) |
| 211 | return; |
| 212 | |
| 213 | std::multimap<RenderPassId, CopyOutputRequest*> copy_requests; |
| 214 | surface->TakeCopyOutputRequests(©_requests); |
| 215 | |
| 216 | RenderPassList render_pass_list; |
| 217 | bool invalid_frame = TakeResources(surface, frame_data, &render_pass_list); |
| 218 | if (invalid_frame) { |
| 219 | for (auto& request : copy_requests) { |
| 220 | request.second->SendEmptyResult(); |
| 221 | delete request.second; |
| 222 | } |
| 223 | return; |
| 224 | } |
| 225 | |
| 226 | SurfaceSet::iterator it = referenced_surfaces_.insert(surface_id).first; |
| 227 | |
| 228 | bool merge_pass = surface_quad->opacity() == 1.f && copy_requests.empty(); |
| 229 | |
| 230 | gfx::Rect surface_damage = DamageRectForSurface( |
| 231 | surface, *render_pass_list.back(), surface_quad->visible_rect); |
| 232 | const RenderPassList& referenced_passes = render_pass_list; |
| 233 | size_t passes_to_copy = |
| 234 | merge_pass ? referenced_passes.size() - 1 : referenced_passes.size(); |
| 235 | for (size_t j = 0; j < passes_to_copy; ++j) { |
| 236 | const RenderPass& source = *referenced_passes[j]; |
| 237 | |
| 238 | size_t sqs_size = source.shared_quad_state_list.size(); |
| 239 | size_t dq_size = source.quad_list.size(); |
| 240 | scoped_ptr<RenderPass> copy_pass(RenderPass::Create(sqs_size, dq_size)); |
| 241 | |
| 242 | RenderPassId remapped_pass_id = RemapPassId(source.id, surface_id); |
| 243 | |
| 244 | copy_pass->SetAll(remapped_pass_id, source.output_rect, gfx::Rect(), |
| 245 | source.transform_to_root_target, |
| 246 | source.has_transparent_background); |
| 247 | |
| 248 | MoveMatchingRequests(source.id, ©_requests, ©_pass->copy_requests); |
| 249 | |
| 250 | // Contributing passes aggregated in to the pass list need to take the |
| 251 | // transform of the surface quad into account to update their transform to |
| 252 | // the root surface. |
| 253 | copy_pass->transform_to_root_target.ConcatTransform( |
| 254 | surface_quad->quadTransform()); |
| 255 | copy_pass->transform_to_root_target.ConcatTransform( |
| 256 | content_to_target_transform); |
| 257 | copy_pass->transform_to_root_target.ConcatTransform( |
| 258 | dest_pass->transform_to_root_target); |
| 259 | |
| 260 | CopyQuadsToPass(source.quad_list, source.shared_quad_state_list, |
| 261 | gfx::Transform(), ClipData(), copy_pass.get(), surface_id); |
| 262 | |
| 263 | if (j == referenced_passes.size() - 1) |
| 264 | surface_damage = gfx::UnionRects(surface_damage, copy_pass->damage_rect); |
| 265 | |
| 266 | dest_pass_list_->push_back(copy_pass.Pass()); |
| 267 | } |
| 268 | |
| 269 | const RenderPass& last_pass = *render_pass_list.back(); |
| 270 | if (merge_pass) { |
| 271 | // TODO(jamesr): Clean up last pass special casing. |
| 272 | const QuadList& quads = last_pass.quad_list; |
| 273 | |
| 274 | gfx::Transform surface_transform = surface_quad->quadTransform(); |
| 275 | surface_transform.ConcatTransform(content_to_target_transform); |
| 276 | |
| 277 | // Intersect the transformed visible rect and the clip rect to create a |
| 278 | // smaller cliprect for the quad. |
| 279 | ClipData surface_quad_clip_rect( |
| 280 | true, MathUtil::MapEnclosingClippedRect(surface_quad->quadTransform(), |
| 281 | surface_quad->visible_rect)); |
| 282 | if (surface_quad->isClipped()) |
| 283 | surface_quad_clip_rect.rect.Intersect(surface_quad->clipRect()); |
| 284 | |
| 285 | ClipData quads_clip = CalculateClipRect(clip_rect, surface_quad_clip_rect, |
| 286 | content_to_target_transform); |
| 287 | |
| 288 | CopyQuadsToPass(quads, last_pass.shared_quad_state_list, surface_transform, |
| 289 | quads_clip, dest_pass, surface_id); |
| 290 | } else { |
| 291 | RenderPassId remapped_pass_id = RemapPassId(last_pass.id, surface_id); |
| 292 | |
| 293 | CopySharedQuadState(surface_quad->shared_quad_state, |
| 294 | content_to_target_transform, clip_rect, dest_pass); |
| 295 | |
| 296 | SharedQuadState* shared_quad_state = |
| 297 | dest_pass->shared_quad_state_list.back(); |
| 298 | RenderPassDrawQuad* quad = |
| 299 | dest_pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>(); |
| 300 | quad->SetNew(shared_quad_state, |
| 301 | surface_quad->rect, |
| 302 | surface_quad->visible_rect, |
| 303 | remapped_pass_id, |
| 304 | 0, |
| 305 | gfx::Vector2dF(), |
| 306 | gfx::Size(), |
| 307 | FilterOperations(), |
| 308 | gfx::Vector2dF(), |
| 309 | FilterOperations()); |
| 310 | } |
| 311 | dest_pass->damage_rect = |
| 312 | gfx::UnionRects(dest_pass->damage_rect, |
| 313 | MathUtil::MapEnclosingClippedRect( |
| 314 | surface_quad->quadTransform(), surface_damage)); |
| 315 | |
| 316 | referenced_surfaces_.erase(it); |
| 317 | } |
| 318 | |
| 319 | void SurfaceAggregator::CopySharedQuadState( |
| 320 | const SharedQuadState* source_sqs, |
| 321 | const gfx::Transform& content_to_target_transform, |
| 322 | const ClipData& clip_rect, |
| 323 | RenderPass* dest_render_pass) { |
| 324 | SharedQuadState* copy_shared_quad_state = |
| 325 | dest_render_pass->CreateAndAppendSharedQuadState(); |
| 326 | copy_shared_quad_state->CopyFrom(source_sqs); |
| 327 | // content_to_target_transform contains any transformation that may exist |
| 328 | // between the context that these quads are being copied from (i.e. the |
| 329 | // surface's draw transform when aggregated from within a surface) to the |
| 330 | // target space of the pass. This will be identity except when copying the |
| 331 | // root draw pass from a surface into a pass when the surface draw quad's |
| 332 | // transform is not identity. |
| 333 | copy_shared_quad_state->content_to_target_transform.ConcatTransform( |
| 334 | content_to_target_transform); |
| 335 | |
| 336 | ClipData new_clip_rect = CalculateClipRect( |
| 337 | clip_rect, ClipData(source_sqs->is_clipped, source_sqs->clip_rect), |
| 338 | content_to_target_transform); |
| 339 | copy_shared_quad_state->is_clipped = new_clip_rect.is_clipped; |
| 340 | copy_shared_quad_state->clip_rect = new_clip_rect.rect; |
| 341 | } |
| 342 | |
| 343 | void SurfaceAggregator::CopyQuadsToPass( |
| 344 | const QuadList& source_quad_list, |
| 345 | const SharedQuadStateList& source_shared_quad_state_list, |
| 346 | const gfx::Transform& content_to_target_transform, |
| 347 | const ClipData& clip_rect, |
| 348 | RenderPass* dest_pass, |
| 349 | SurfaceId surface_id) { |
| 350 | const SharedQuadState* last_copied_source_shared_quad_state = NULL; |
| 351 | |
| 352 | SharedQuadStateList::ConstIterator sqs_iter = |
| 353 | source_shared_quad_state_list.begin(); |
| 354 | for (const auto& quad : source_quad_list) { |
| 355 | while (quad->shared_quad_state != *sqs_iter) { |
| 356 | ++sqs_iter; |
| 357 | DCHECK(sqs_iter != source_shared_quad_state_list.end()); |
| 358 | } |
| 359 | DCHECK_EQ(quad->shared_quad_state, *sqs_iter); |
| 360 | |
| 361 | if (quad->material == DrawQuad::SURFACE_CONTENT) { |
| 362 | const SurfaceDrawQuad* surface_quad = SurfaceDrawQuad::MaterialCast(quad); |
| 363 | HandleSurfaceQuad(surface_quad, content_to_target_transform, clip_rect, |
| 364 | dest_pass); |
| 365 | } else { |
| 366 | if (quad->shared_quad_state != last_copied_source_shared_quad_state) { |
| 367 | CopySharedQuadState(quad->shared_quad_state, |
| 368 | content_to_target_transform, clip_rect, dest_pass); |
| 369 | last_copied_source_shared_quad_state = quad->shared_quad_state; |
| 370 | } |
| 371 | if (quad->material == DrawQuad::RENDER_PASS) { |
| 372 | const RenderPassDrawQuad* pass_quad = |
| 373 | RenderPassDrawQuad::MaterialCast(quad); |
| 374 | RenderPassId original_pass_id = pass_quad->render_pass_id; |
| 375 | RenderPassId remapped_pass_id = |
| 376 | RemapPassId(original_pass_id, surface_id); |
| 377 | |
| 378 | gfx::Rect pass_damage; |
| 379 | for (const auto* pass : *dest_pass_list_) { |
| 380 | if (pass->id == remapped_pass_id) { |
| 381 | pass_damage = pass->damage_rect; |
| 382 | break; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | DrawQuad* rpdq = dest_pass->CopyFromAndAppendRenderPassDrawQuad( |
| 387 | pass_quad, dest_pass->shared_quad_state_list.back(), |
| 388 | remapped_pass_id); |
| 389 | dest_pass->damage_rect = gfx::UnionRects( |
| 390 | dest_pass->damage_rect, MathUtil::MapEnclosingClippedRect( |
| 391 | rpdq->quadTransform(), pass_damage)); |
| 392 | } else { |
| 393 | dest_pass->CopyFromAndAppendDrawQuad( |
| 394 | quad, dest_pass->shared_quad_state_list.back()); |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | void SurfaceAggregator::CopyPasses(const DelegatedFrameData* frame_data, |
| 401 | Surface* surface) { |
| 402 | RenderPassList source_pass_list; |
| 403 | |
| 404 | // The root surface is allowed to have copy output requests, so grab them |
| 405 | // off its render passes. |
| 406 | std::multimap<RenderPassId, CopyOutputRequest*> copy_requests; |
| 407 | surface->TakeCopyOutputRequests(©_requests); |
| 408 | |
| 409 | bool invalid_frame = TakeResources(surface, frame_data, &source_pass_list); |
| 410 | DCHECK(!invalid_frame); |
| 411 | |
| 412 | for (size_t i = 0; i < source_pass_list.size(); ++i) { |
| 413 | const RenderPass& source = *source_pass_list[i]; |
| 414 | |
| 415 | size_t sqs_size = source.shared_quad_state_list.size(); |
| 416 | size_t dq_size = source.quad_list.size(); |
| 417 | scoped_ptr<RenderPass> copy_pass(RenderPass::Create(sqs_size, dq_size)); |
| 418 | |
| 419 | MoveMatchingRequests(source.id, ©_requests, ©_pass->copy_requests); |
| 420 | |
| 421 | RenderPassId remapped_pass_id = |
| 422 | RemapPassId(source.id, surface->surface_id()); |
| 423 | |
| 424 | gfx::Rect damage_rect = |
| 425 | (i < source_pass_list.size() - 1) |
| 426 | ? gfx::Rect() |
| 427 | : DamageRectForSurface(surface, source, source.output_rect); |
| 428 | copy_pass->SetAll(remapped_pass_id, source.output_rect, damage_rect, |
| 429 | source.transform_to_root_target, |
| 430 | source.has_transparent_background); |
| 431 | |
| 432 | CopyQuadsToPass(source.quad_list, source.shared_quad_state_list, |
| 433 | gfx::Transform(), ClipData(), copy_pass.get(), |
| 434 | surface->surface_id()); |
| 435 | |
| 436 | dest_pass_list_->push_back(copy_pass.Pass()); |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | void SurfaceAggregator::RemoveUnreferencedChildren() { |
| 441 | for (const auto& surface : previous_contained_surfaces_) { |
| 442 | if (!contained_surfaces_.count(surface.first)) { |
| 443 | SurfaceToResourceChildIdMap::iterator it = |
| 444 | surface_id_to_resource_child_id_.find(surface.first); |
| 445 | if (it != surface_id_to_resource_child_id_.end()) { |
| 446 | provider_->DestroyChild(it->second); |
| 447 | surface_id_to_resource_child_id_.erase(it); |
| 448 | } |
| 449 | |
| 450 | Surface* surface_ptr = manager_->GetSurfaceForId(surface.first); |
| 451 | if (surface_ptr) |
| 452 | surface_ptr->RunDrawCallbacks(SurfaceDrawStatus::DRAW_SKIPPED); |
| 453 | } |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | scoped_ptr<CompositorFrame> SurfaceAggregator::Aggregate(SurfaceId surface_id) { |
| 458 | Surface* surface = manager_->GetSurfaceForId(surface_id); |
| 459 | DCHECK(surface); |
| 460 | contained_surfaces_[surface_id] = surface->frame_index(); |
| 461 | const CompositorFrame* root_surface_frame = surface->GetEligibleFrame(); |
| 462 | if (!root_surface_frame) |
| 463 | return nullptr; |
| 464 | TRACE_EVENT0("cc", "SurfaceAggregator::Aggregate"); |
| 465 | |
| 466 | scoped_ptr<CompositorFrame> frame(new CompositorFrame); |
| 467 | frame->delegated_frame_data = make_scoped_ptr(new DelegatedFrameData); |
| 468 | |
| 469 | DCHECK(root_surface_frame->delegated_frame_data); |
| 470 | |
| 471 | SurfaceSet::iterator it = referenced_surfaces_.insert(surface_id).first; |
| 472 | |
| 473 | dest_resource_list_ = &frame->delegated_frame_data->resource_list; |
| 474 | dest_pass_list_ = &frame->delegated_frame_data->render_pass_list; |
| 475 | |
| 476 | CopyPasses(root_surface_frame->delegated_frame_data.get(), surface); |
| 477 | |
| 478 | referenced_surfaces_.erase(it); |
| 479 | DCHECK(referenced_surfaces_.empty()); |
| 480 | |
| 481 | if (dest_pass_list_->empty()) |
| 482 | return nullptr; |
| 483 | |
| 484 | dest_pass_list_ = NULL; |
| 485 | RemoveUnreferencedChildren(); |
| 486 | contained_surfaces_.swap(previous_contained_surfaces_); |
| 487 | contained_surfaces_.clear(); |
| 488 | |
| 489 | for (SurfaceIndexMap::iterator it = previous_contained_surfaces_.begin(); |
| 490 | it != previous_contained_surfaces_.end(); |
| 491 | ++it) { |
| 492 | Surface* surface = manager_->GetSurfaceForId(it->first); |
| 493 | if (surface) |
| 494 | surface->TakeLatencyInfo(&frame->metadata.latency_info); |
| 495 | } |
| 496 | |
| 497 | // TODO(jamesr): Aggregate all resource references into the returned frame's |
| 498 | // resource list. |
| 499 | |
| 500 | return frame.Pass(); |
| 501 | } |
| 502 | |
| 503 | void SurfaceAggregator::ReleaseResources(SurfaceId surface_id) { |
| 504 | SurfaceToResourceChildIdMap::iterator it = |
| 505 | surface_id_to_resource_child_id_.find(surface_id); |
| 506 | if (it != surface_id_to_resource_child_id_.end()) { |
| 507 | provider_->DestroyChild(it->second); |
| 508 | surface_id_to_resource_child_id_.erase(it); |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | } // namespace cc |