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| 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 | |
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