| // Copyright 2014 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/raster/one_copy_tile_task_worker_pool.h" |
| |
| #include <stdint.h> |
| |
| #include <algorithm> |
| #include <limits> |
| #include <utility> |
| |
| #include "base/macros.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/thread_task_runner_handle.h" |
| #include "base/trace_event/memory_dump_manager.h" |
| #include "base/trace_event/trace_event.h" |
| #include "base/trace_event/trace_event_argument.h" |
| #include "cc/base/container_util.h" |
| #include "cc/base/math_util.h" |
| #include "cc/debug/traced_value.h" |
| #include "cc/raster/raster_buffer.h" |
| #include "cc/resources/platform_color.h" |
| #include "cc/resources/resource_format.h" |
| #include "cc/resources/resource_util.h" |
| #include "cc/resources/scoped_resource.h" |
| #include "gpu/GLES2/gl2extchromium.h" |
| #include "gpu/command_buffer/client/gles2_interface.h" |
| #include "gpu/command_buffer/client/gpu_memory_buffer_manager.h" |
| #include "ui/gfx/buffer_format_util.h" |
| |
| namespace cc { |
| namespace { |
| |
| class RasterBufferImpl : public RasterBuffer { |
| public: |
| RasterBufferImpl(OneCopyTileTaskWorkerPool* worker_pool, |
| ResourceProvider* resource_provider, |
| ResourceFormat resource_format, |
| const Resource* resource, |
| uint64_t previous_content_id) |
| : worker_pool_(worker_pool), |
| resource_(resource), |
| lock_(resource_provider, resource->id()), |
| previous_content_id_(previous_content_id) {} |
| |
| ~RasterBufferImpl() override {} |
| |
| // Overridden from RasterBuffer: |
| void Playback(const DisplayListRasterSource* raster_source, |
| const gfx::Rect& raster_full_rect, |
| const gfx::Rect& raster_dirty_rect, |
| uint64_t new_content_id, |
| float scale, |
| bool include_images) override { |
| worker_pool_->PlaybackAndCopyOnWorkerThread( |
| resource_, &lock_, raster_source, raster_full_rect, raster_dirty_rect, |
| scale, include_images, previous_content_id_, new_content_id); |
| } |
| |
| private: |
| OneCopyTileTaskWorkerPool* worker_pool_; |
| const Resource* resource_; |
| ResourceProvider::ScopedWriteLockGL lock_; |
| uint64_t previous_content_id_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl); |
| }; |
| |
| // Delay between checking for query result to be available. |
| const int kCheckForQueryResultAvailableTickRateMs = 1; |
| |
| // Number of attempts to allow before we perform a check that will wait for |
| // query to complete. |
| const int kMaxCheckForQueryResultAvailableAttempts = 256; |
| |
| // 4MiB is the size of 4 512x512 tiles, which has proven to be a good |
| // default batch size for copy operations. |
| const int kMaxBytesPerCopyOperation = 1024 * 1024 * 4; |
| |
| // Delay before a staging buffer might be released. |
| const int kStagingBufferExpirationDelayMs = 1000; |
| |
| bool CheckForQueryResult(gpu::gles2::GLES2Interface* gl, unsigned query_id) { |
| unsigned complete = 1; |
| gl->GetQueryObjectuivEXT(query_id, GL_QUERY_RESULT_AVAILABLE_EXT, &complete); |
| return !!complete; |
| } |
| |
| void WaitForQueryResult(gpu::gles2::GLES2Interface* gl, unsigned query_id) { |
| TRACE_EVENT0("cc", "WaitForQueryResult"); |
| |
| int attempts_left = kMaxCheckForQueryResultAvailableAttempts; |
| while (attempts_left--) { |
| if (CheckForQueryResult(gl, query_id)) |
| break; |
| |
| // We have to flush the context to be guaranteed that a query result will |
| // be available in a finite amount of time. |
| gl->ShallowFlushCHROMIUM(); |
| |
| base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds( |
| kCheckForQueryResultAvailableTickRateMs)); |
| } |
| |
| unsigned result = 0; |
| gl->GetQueryObjectuivEXT(query_id, GL_QUERY_RESULT_EXT, &result); |
| } |
| |
| } // namespace |
| |
| OneCopyTileTaskWorkerPool::StagingBuffer::StagingBuffer(const gfx::Size& size, |
| ResourceFormat format) |
| : size(size), |
| format(format), |
| texture_id(0), |
| image_id(0), |
| query_id(0), |
| content_id(0) {} |
| |
| OneCopyTileTaskWorkerPool::StagingBuffer::~StagingBuffer() { |
| DCHECK_EQ(texture_id, 0u); |
| DCHECK_EQ(image_id, 0u); |
| DCHECK_EQ(query_id, 0u); |
| } |
| |
| void OneCopyTileTaskWorkerPool::StagingBuffer::DestroyGLResources( |
| gpu::gles2::GLES2Interface* gl) { |
| if (query_id) { |
| gl->DeleteQueriesEXT(1, &query_id); |
| query_id = 0; |
| } |
| if (image_id) { |
| gl->DestroyImageCHROMIUM(image_id); |
| image_id = 0; |
| } |
| if (texture_id) { |
| gl->DeleteTextures(1, &texture_id); |
| texture_id = 0; |
| } |
| } |
| |
| void OneCopyTileTaskWorkerPool::StagingBuffer::OnMemoryDump( |
| base::trace_event::ProcessMemoryDump* pmd, |
| ResourceFormat format, |
| bool in_free_list) const { |
| if (!gpu_memory_buffer) |
| return; |
| |
| gfx::GpuMemoryBufferId buffer_id = gpu_memory_buffer->GetId(); |
| std::string buffer_dump_name = |
| base::StringPrintf("cc/one_copy/staging_memory/buffer_%d", buffer_id.id); |
| base::trace_event::MemoryAllocatorDump* buffer_dump = |
| pmd->CreateAllocatorDump(buffer_dump_name); |
| |
| uint64_t buffer_size_in_bytes = |
| ResourceUtil::UncheckedSizeInBytes<uint64_t>(size, format); |
| buffer_dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize, |
| base::trace_event::MemoryAllocatorDump::kUnitsBytes, |
| buffer_size_in_bytes); |
| buffer_dump->AddScalar("free_size", |
| base::trace_event::MemoryAllocatorDump::kUnitsBytes, |
| in_free_list ? buffer_size_in_bytes : 0); |
| |
| // Emit an ownership edge towards a global allocator dump node. |
| const uint64_t tracing_process_id = |
| base::trace_event::MemoryDumpManager::GetInstance() |
| ->GetTracingProcessId(); |
| base::trace_event::MemoryAllocatorDumpGuid shared_buffer_guid = |
| gfx::GetGpuMemoryBufferGUIDForTracing(tracing_process_id, buffer_id); |
| pmd->CreateSharedGlobalAllocatorDump(shared_buffer_guid); |
| |
| // By creating an edge with a higher |importance| (w.r.t. browser-side dumps) |
| // the tracing UI will account the effective size of the buffer to the child. |
| const int kImportance = 2; |
| pmd->AddOwnershipEdge(buffer_dump->guid(), shared_buffer_guid, kImportance); |
| } |
| |
| // static |
| scoped_ptr<TileTaskWorkerPool> OneCopyTileTaskWorkerPool::Create( |
| base::SequencedTaskRunner* task_runner, |
| TaskGraphRunner* task_graph_runner, |
| ContextProvider* context_provider, |
| ResourceProvider* resource_provider, |
| int max_copy_texture_chromium_size, |
| bool use_partial_raster, |
| int max_staging_buffer_usage_in_bytes, |
| ResourceFormat preferred_tile_format) { |
| return make_scoped_ptr<TileTaskWorkerPool>(new OneCopyTileTaskWorkerPool( |
| task_runner, task_graph_runner, resource_provider, |
| max_copy_texture_chromium_size, use_partial_raster, |
| max_staging_buffer_usage_in_bytes, preferred_tile_format)); |
| } |
| |
| OneCopyTileTaskWorkerPool::OneCopyTileTaskWorkerPool( |
| base::SequencedTaskRunner* task_runner, |
| TaskGraphRunner* task_graph_runner, |
| ResourceProvider* resource_provider, |
| int max_copy_texture_chromium_size, |
| bool use_partial_raster, |
| int max_staging_buffer_usage_in_bytes, |
| ResourceFormat preferred_tile_format) |
| : task_runner_(task_runner), |
| task_graph_runner_(task_graph_runner), |
| namespace_token_(task_graph_runner->GetNamespaceToken()), |
| resource_provider_(resource_provider), |
| max_bytes_per_copy_operation_( |
| max_copy_texture_chromium_size |
| ? std::min(kMaxBytesPerCopyOperation, |
| max_copy_texture_chromium_size) |
| : kMaxBytesPerCopyOperation), |
| use_partial_raster_(use_partial_raster), |
| bytes_scheduled_since_last_flush_(0), |
| max_staging_buffer_usage_in_bytes_(max_staging_buffer_usage_in_bytes), |
| preferred_tile_format_(preferred_tile_format), |
| staging_buffer_usage_in_bytes_(0), |
| free_staging_buffer_usage_in_bytes_(0), |
| staging_buffer_expiration_delay_( |
| base::TimeDelta::FromMilliseconds(kStagingBufferExpirationDelayMs)), |
| reduce_memory_usage_pending_(false), |
| weak_ptr_factory_(this) { |
| base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider( |
| this, "OneCopyTileTaskWorkerPool", base::ThreadTaskRunnerHandle::Get()); |
| reduce_memory_usage_callback_ = |
| base::Bind(&OneCopyTileTaskWorkerPool::ReduceMemoryUsage, |
| weak_ptr_factory_.GetWeakPtr()); |
| } |
| |
| OneCopyTileTaskWorkerPool::~OneCopyTileTaskWorkerPool() { |
| base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider( |
| this); |
| } |
| |
| TileTaskRunner* OneCopyTileTaskWorkerPool::AsTileTaskRunner() { |
| return this; |
| } |
| |
| void OneCopyTileTaskWorkerPool::Shutdown() { |
| TRACE_EVENT0("cc", "OneCopyTileTaskWorkerPool::Shutdown"); |
| |
| TaskGraph empty; |
| task_graph_runner_->ScheduleTasks(namespace_token_, &empty); |
| task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_); |
| |
| base::AutoLock lock(lock_); |
| |
| if (buffers_.empty()) |
| return; |
| |
| ReleaseBuffersNotUsedSince(base::TimeTicks() + base::TimeDelta::Max()); |
| DCHECK_EQ(staging_buffer_usage_in_bytes_, 0); |
| DCHECK_EQ(free_staging_buffer_usage_in_bytes_, 0); |
| } |
| |
| void OneCopyTileTaskWorkerPool::ScheduleTasks(TaskGraph* graph) { |
| TRACE_EVENT0("cc", "OneCopyTileTaskWorkerPool::ScheduleTasks"); |
| |
| ScheduleTasksOnOriginThread(this, graph); |
| |
| // Barrier to sync any new resources to the worker context. |
| resource_provider_->output_surface() |
| ->context_provider() |
| ->ContextGL() |
| ->OrderingBarrierCHROMIUM(); |
| |
| task_graph_runner_->ScheduleTasks(namespace_token_, graph); |
| } |
| |
| void OneCopyTileTaskWorkerPool::CheckForCompletedTasks() { |
| TRACE_EVENT0("cc", "OneCopyTileTaskWorkerPool::CheckForCompletedTasks"); |
| |
| task_graph_runner_->CollectCompletedTasks(namespace_token_, |
| &completed_tasks_); |
| |
| for (Task::Vector::const_iterator it = completed_tasks_.begin(); |
| it != completed_tasks_.end(); ++it) { |
| TileTask* task = static_cast<TileTask*>(it->get()); |
| |
| task->WillComplete(); |
| task->CompleteOnOriginThread(this); |
| task->DidComplete(); |
| } |
| completed_tasks_.clear(); |
| } |
| |
| ResourceFormat OneCopyTileTaskWorkerPool::GetResourceFormat( |
| bool must_support_alpha) const { |
| if (resource_provider_->IsResourceFormatSupported(preferred_tile_format_) && |
| (DoesResourceFormatSupportAlpha(preferred_tile_format_) || |
| !must_support_alpha)) { |
| return preferred_tile_format_; |
| } |
| |
| return resource_provider_->best_texture_format(); |
| } |
| |
| bool OneCopyTileTaskWorkerPool::GetResourceRequiresSwizzle( |
| bool must_support_alpha) const { |
| return ResourceFormatRequiresSwizzle(GetResourceFormat(must_support_alpha)); |
| } |
| |
| scoped_ptr<RasterBuffer> OneCopyTileTaskWorkerPool::AcquireBufferForRaster( |
| const Resource* resource, |
| uint64_t resource_content_id, |
| uint64_t previous_content_id) { |
| // TODO(danakj): If resource_content_id != 0, we only need to copy/upload |
| // the dirty rect. |
| return make_scoped_ptr<RasterBuffer>( |
| new RasterBufferImpl(this, resource_provider_, resource->format(), |
| resource, previous_content_id)); |
| } |
| |
| void OneCopyTileTaskWorkerPool::ReleaseBufferForRaster( |
| scoped_ptr<RasterBuffer> buffer) { |
| // Nothing to do here. RasterBufferImpl destructor cleans up after itself. |
| } |
| |
| void OneCopyTileTaskWorkerPool::PlaybackAndCopyOnWorkerThread( |
| const Resource* resource, |
| ResourceProvider::ScopedWriteLockGL* resource_lock, |
| const DisplayListRasterSource* raster_source, |
| const gfx::Rect& raster_full_rect, |
| const gfx::Rect& raster_dirty_rect, |
| float scale, |
| bool include_images, |
| uint64_t previous_content_id, |
| uint64_t new_content_id) { |
| base::AutoLock lock(lock_); |
| |
| scoped_ptr<StagingBuffer> staging_buffer = |
| AcquireStagingBuffer(resource, previous_content_id); |
| DCHECK(staging_buffer); |
| |
| { |
| base::AutoUnlock unlock(lock_); |
| |
| // Allocate GpuMemoryBuffer if necessary. If using partial raster, we |
| // must allocate a buffer with BufferUsage CPU_READ_WRITE_PERSISTENT. |
| if (!staging_buffer->gpu_memory_buffer) { |
| staging_buffer->gpu_memory_buffer = |
| resource_provider_->gpu_memory_buffer_manager() |
| ->AllocateGpuMemoryBuffer( |
| staging_buffer->size, BufferFormat(resource->format()), |
| use_partial_raster_ |
| ? gfx::BufferUsage::GPU_READ_CPU_READ_WRITE_PERSISTENT |
| : gfx::BufferUsage::GPU_READ_CPU_READ_WRITE); |
| } |
| |
| gfx::Rect playback_rect = raster_full_rect; |
| if (use_partial_raster_ && previous_content_id) { |
| // Reduce playback rect to dirty region if the content id of the staging |
| // buffer matches the prevous content id. |
| if (previous_content_id == staging_buffer->content_id) |
| playback_rect.Intersect(raster_dirty_rect); |
| } |
| |
| if (staging_buffer->gpu_memory_buffer) { |
| gfx::GpuMemoryBuffer* buffer = staging_buffer->gpu_memory_buffer.get(); |
| DCHECK_EQ(1u, gfx::NumberOfPlanesForBufferFormat(buffer->GetFormat())); |
| bool rv = buffer->Map(); |
| DCHECK(rv); |
| DCHECK(buffer->memory(0)); |
| // TileTaskWorkerPool::PlaybackToMemory only supports unsigned strides. |
| DCHECK_GE(buffer->stride(0), 0); |
| |
| DCHECK(!playback_rect.IsEmpty()) |
| << "Why are we rastering a tile that's not dirty?"; |
| TileTaskWorkerPool::PlaybackToMemory( |
| buffer->memory(0), resource->format(), staging_buffer->size, |
| buffer->stride(0), raster_source, raster_full_rect, playback_rect, |
| scale, include_images); |
| buffer->Unmap(); |
| staging_buffer->content_id = new_content_id; |
| } |
| } |
| |
| ContextProvider* context_provider = |
| resource_provider_->output_surface()->worker_context_provider(); |
| DCHECK(context_provider); |
| |
| { |
| ContextProvider::ScopedContextLock scoped_context(context_provider); |
| |
| gpu::gles2::GLES2Interface* gl = scoped_context.ContextGL(); |
| DCHECK(gl); |
| |
| unsigned image_target = |
| resource_provider_->GetImageTextureTarget(resource->format()); |
| |
| // Create and bind staging texture. |
| if (!staging_buffer->texture_id) { |
| gl->GenTextures(1, &staging_buffer->texture_id); |
| gl->BindTexture(image_target, staging_buffer->texture_id); |
| gl->TexParameteri(image_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| gl->TexParameteri(image_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| gl->TexParameteri(image_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| gl->TexParameteri(image_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| } else { |
| gl->BindTexture(image_target, staging_buffer->texture_id); |
| } |
| |
| // Create and bind image. |
| if (!staging_buffer->image_id) { |
| if (staging_buffer->gpu_memory_buffer) { |
| staging_buffer->image_id = gl->CreateImageCHROMIUM( |
| staging_buffer->gpu_memory_buffer->AsClientBuffer(), |
| staging_buffer->size.width(), staging_buffer->size.height(), |
| GLInternalFormat(resource->format())); |
| gl->BindTexImage2DCHROMIUM(image_target, staging_buffer->image_id); |
| } |
| } else { |
| gl->ReleaseTexImage2DCHROMIUM(image_target, staging_buffer->image_id); |
| gl->BindTexImage2DCHROMIUM(image_target, staging_buffer->image_id); |
| } |
| |
| // Unbind staging texture. |
| gl->BindTexture(image_target, 0); |
| |
| if (resource_provider_->use_sync_query()) { |
| if (!staging_buffer->query_id) |
| gl->GenQueriesEXT(1, &staging_buffer->query_id); |
| |
| #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY) |
| // TODO(reveman): This avoids a performance problem on ARM ChromeOS |
| // devices. crbug.com/580166 |
| gl->BeginQueryEXT(GL_COMMANDS_ISSUED_CHROMIUM, staging_buffer->query_id); |
| #else |
| gl->BeginQueryEXT(GL_COMMANDS_COMPLETED_CHROMIUM, |
| staging_buffer->query_id); |
| #endif |
| } |
| |
| // Since compressed texture's cannot be pre-allocated we might have an |
| // unallocated resource in which case we need to perform a full size copy. |
| if (IsResourceFormatCompressed(resource->format())) { |
| gl->CompressedCopyTextureCHROMIUM(staging_buffer->texture_id, |
| resource_lock->texture_id()); |
| } else { |
| int bytes_per_row = |
| (BitsPerPixel(resource->format()) * resource->size().width()) / 8; |
| int chunk_size_in_rows = |
| std::max(1, max_bytes_per_copy_operation_ / bytes_per_row); |
| // Align chunk size to 4. Required to support compressed texture formats. |
| chunk_size_in_rows = MathUtil::UncheckedRoundUp(chunk_size_in_rows, 4); |
| int y = 0; |
| int height = resource->size().height(); |
| while (y < height) { |
| // Copy at most |chunk_size_in_rows|. |
| int rows_to_copy = std::min(chunk_size_in_rows, height - y); |
| DCHECK_GT(rows_to_copy, 0); |
| |
| gl->CopySubTextureCHROMIUM( |
| staging_buffer->texture_id, resource_lock->texture_id(), 0, y, 0, y, |
| resource->size().width(), rows_to_copy, false, false, false); |
| y += rows_to_copy; |
| |
| // Increment |bytes_scheduled_since_last_flush_| by the amount of memory |
| // used for this copy operation. |
| bytes_scheduled_since_last_flush_ += rows_to_copy * bytes_per_row; |
| |
| if (bytes_scheduled_since_last_flush_ >= |
| max_bytes_per_copy_operation_) { |
| gl->ShallowFlushCHROMIUM(); |
| bytes_scheduled_since_last_flush_ = 0; |
| } |
| } |
| } |
| |
| if (resource_provider_->use_sync_query()) { |
| #if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY) |
| gl->EndQueryEXT(GL_COMMANDS_ISSUED_CHROMIUM); |
| #else |
| gl->EndQueryEXT(GL_COMMANDS_COMPLETED_CHROMIUM); |
| #endif |
| } |
| |
| const uint64_t fence_sync = gl->InsertFenceSyncCHROMIUM(); |
| |
| // Barrier to sync worker context output to cc context. |
| gl->OrderingBarrierCHROMIUM(); |
| |
| // Generate sync token after the barrier for cross context synchronization. |
| gpu::SyncToken sync_token; |
| gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, sync_token.GetData()); |
| resource_lock->UpdateResourceSyncToken(sync_token); |
| } |
| |
| staging_buffer->last_usage = base::TimeTicks::Now(); |
| busy_buffers_.push_back(std::move(staging_buffer)); |
| |
| ScheduleReduceMemoryUsage(); |
| } |
| |
| bool OneCopyTileTaskWorkerPool::OnMemoryDump( |
| const base::trace_event::MemoryDumpArgs& args, |
| base::trace_event::ProcessMemoryDump* pmd) { |
| base::AutoLock lock(lock_); |
| |
| for (const auto* buffer : buffers_) { |
| auto in_free_buffers = |
| std::find_if(free_buffers_.begin(), free_buffers_.end(), |
| [buffer](const scoped_ptr<StagingBuffer>& b) { |
| return b.get() == buffer; |
| }); |
| buffer->OnMemoryDump(pmd, buffer->format, |
| in_free_buffers != free_buffers_.end()); |
| } |
| |
| return true; |
| } |
| |
| void OneCopyTileTaskWorkerPool::AddStagingBuffer( |
| const StagingBuffer* staging_buffer, |
| ResourceFormat format) { |
| lock_.AssertAcquired(); |
| |
| DCHECK(buffers_.find(staging_buffer) == buffers_.end()); |
| buffers_.insert(staging_buffer); |
| int buffer_usage_in_bytes = |
| ResourceUtil::UncheckedSizeInBytes<int>(staging_buffer->size, format); |
| staging_buffer_usage_in_bytes_ += buffer_usage_in_bytes; |
| } |
| |
| void OneCopyTileTaskWorkerPool::RemoveStagingBuffer( |
| const StagingBuffer* staging_buffer) { |
| lock_.AssertAcquired(); |
| |
| DCHECK(buffers_.find(staging_buffer) != buffers_.end()); |
| buffers_.erase(staging_buffer); |
| int buffer_usage_in_bytes = ResourceUtil::UncheckedSizeInBytes<int>( |
| staging_buffer->size, staging_buffer->format); |
| DCHECK_GE(staging_buffer_usage_in_bytes_, buffer_usage_in_bytes); |
| staging_buffer_usage_in_bytes_ -= buffer_usage_in_bytes; |
| } |
| |
| void OneCopyTileTaskWorkerPool::MarkStagingBufferAsFree( |
| const StagingBuffer* staging_buffer) { |
| lock_.AssertAcquired(); |
| |
| int buffer_usage_in_bytes = ResourceUtil::UncheckedSizeInBytes<int>( |
| staging_buffer->size, staging_buffer->format); |
| free_staging_buffer_usage_in_bytes_ += buffer_usage_in_bytes; |
| } |
| |
| void OneCopyTileTaskWorkerPool::MarkStagingBufferAsBusy( |
| const StagingBuffer* staging_buffer) { |
| lock_.AssertAcquired(); |
| |
| int buffer_usage_in_bytes = ResourceUtil::UncheckedSizeInBytes<int>( |
| staging_buffer->size, staging_buffer->format); |
| DCHECK_GE(free_staging_buffer_usage_in_bytes_, buffer_usage_in_bytes); |
| free_staging_buffer_usage_in_bytes_ -= buffer_usage_in_bytes; |
| } |
| |
| scoped_ptr<OneCopyTileTaskWorkerPool::StagingBuffer> |
| OneCopyTileTaskWorkerPool::AcquireStagingBuffer(const Resource* resource, |
| uint64_t previous_content_id) { |
| lock_.AssertAcquired(); |
| |
| scoped_ptr<StagingBuffer> staging_buffer; |
| |
| ContextProvider* context_provider = |
| resource_provider_->output_surface()->worker_context_provider(); |
| DCHECK(context_provider); |
| |
| ContextProvider::ScopedContextLock scoped_context(context_provider); |
| |
| gpu::gles2::GLES2Interface* gl = scoped_context.ContextGL(); |
| DCHECK(gl); |
| |
| // Check if any busy buffers have become available. |
| if (resource_provider_->use_sync_query()) { |
| while (!busy_buffers_.empty()) { |
| if (!CheckForQueryResult(gl, busy_buffers_.front()->query_id)) |
| break; |
| |
| MarkStagingBufferAsFree(busy_buffers_.front().get()); |
| free_buffers_.push_back(PopFront(&busy_buffers_)); |
| } |
| } |
| |
| // Wait for memory usage of non-free buffers to become less than the limit. |
| while ( |
| (staging_buffer_usage_in_bytes_ - free_staging_buffer_usage_in_bytes_) >= |
| max_staging_buffer_usage_in_bytes_) { |
| // Stop when there are no more busy buffers to wait for. |
| if (busy_buffers_.empty()) |
| break; |
| |
| if (resource_provider_->use_sync_query()) { |
| WaitForQueryResult(gl, busy_buffers_.front()->query_id); |
| MarkStagingBufferAsFree(busy_buffers_.front().get()); |
| free_buffers_.push_back(PopFront(&busy_buffers_)); |
| } else { |
| // Fall-back to glFinish if CHROMIUM_sync_query is not available. |
| gl->Finish(); |
| while (!busy_buffers_.empty()) { |
| MarkStagingBufferAsFree(busy_buffers_.front().get()); |
| free_buffers_.push_back(PopFront(&busy_buffers_)); |
| } |
| } |
| } |
| |
| // Find a staging buffer that allows us to perform partial raster when |
| // using persistent GpuMemoryBuffers. |
| if (use_partial_raster_ && previous_content_id) { |
| StagingBufferDeque::iterator it = std::find_if( |
| free_buffers_.begin(), free_buffers_.end(), |
| [previous_content_id](const scoped_ptr<StagingBuffer>& buffer) { |
| return buffer->content_id == previous_content_id; |
| }); |
| if (it != free_buffers_.end()) { |
| staging_buffer = std::move(*it); |
| free_buffers_.erase(it); |
| MarkStagingBufferAsBusy(staging_buffer.get()); |
| } |
| } |
| |
| // Find staging buffer of correct size and format. |
| if (!staging_buffer) { |
| StagingBufferDeque::iterator it = |
| std::find_if(free_buffers_.begin(), free_buffers_.end(), |
| [resource](const scoped_ptr<StagingBuffer>& buffer) { |
| return buffer->size == resource->size() && |
| buffer->format == resource->format(); |
| }); |
| if (it != free_buffers_.end()) { |
| staging_buffer = std::move(*it); |
| free_buffers_.erase(it); |
| MarkStagingBufferAsBusy(staging_buffer.get()); |
| } |
| } |
| |
| // Create new staging buffer if necessary. |
| if (!staging_buffer) { |
| staging_buffer = make_scoped_ptr( |
| new StagingBuffer(resource->size(), resource->format())); |
| AddStagingBuffer(staging_buffer.get(), resource->format()); |
| } |
| |
| // Release enough free buffers to stay within the limit. |
| while (staging_buffer_usage_in_bytes_ > max_staging_buffer_usage_in_bytes_) { |
| if (free_buffers_.empty()) |
| break; |
| |
| free_buffers_.front()->DestroyGLResources(gl); |
| MarkStagingBufferAsBusy(free_buffers_.front().get()); |
| RemoveStagingBuffer(free_buffers_.front().get()); |
| free_buffers_.pop_front(); |
| } |
| |
| return staging_buffer; |
| } |
| |
| base::TimeTicks OneCopyTileTaskWorkerPool::GetUsageTimeForLRUBuffer() { |
| lock_.AssertAcquired(); |
| |
| if (!free_buffers_.empty()) |
| return free_buffers_.front()->last_usage; |
| |
| if (!busy_buffers_.empty()) |
| return busy_buffers_.front()->last_usage; |
| |
| return base::TimeTicks(); |
| } |
| |
| void OneCopyTileTaskWorkerPool::ScheduleReduceMemoryUsage() { |
| lock_.AssertAcquired(); |
| |
| if (reduce_memory_usage_pending_) |
| return; |
| |
| reduce_memory_usage_pending_ = true; |
| |
| // Schedule a call to ReduceMemoryUsage at the time when the LRU buffer |
| // should be released. |
| base::TimeTicks reduce_memory_usage_time = |
| GetUsageTimeForLRUBuffer() + staging_buffer_expiration_delay_; |
| task_runner_->PostDelayedTask( |
| FROM_HERE, reduce_memory_usage_callback_, |
| reduce_memory_usage_time - base::TimeTicks::Now()); |
| } |
| |
| void OneCopyTileTaskWorkerPool::ReduceMemoryUsage() { |
| base::AutoLock lock(lock_); |
| |
| reduce_memory_usage_pending_ = false; |
| |
| if (free_buffers_.empty() && busy_buffers_.empty()) |
| return; |
| |
| base::TimeTicks current_time = base::TimeTicks::Now(); |
| ReleaseBuffersNotUsedSince(current_time - staging_buffer_expiration_delay_); |
| |
| if (free_buffers_.empty() && busy_buffers_.empty()) |
| return; |
| |
| reduce_memory_usage_pending_ = true; |
| |
| // Schedule another call to ReduceMemoryUsage at the time when the next |
| // buffer should be released. |
| base::TimeTicks reduce_memory_usage_time = |
| GetUsageTimeForLRUBuffer() + staging_buffer_expiration_delay_; |
| task_runner_->PostDelayedTask(FROM_HERE, reduce_memory_usage_callback_, |
| reduce_memory_usage_time - current_time); |
| } |
| |
| void OneCopyTileTaskWorkerPool::ReleaseBuffersNotUsedSince( |
| base::TimeTicks time) { |
| lock_.AssertAcquired(); |
| |
| ContextProvider* context_provider = |
| resource_provider_->output_surface()->worker_context_provider(); |
| DCHECK(context_provider); |
| |
| { |
| ContextProvider::ScopedContextLock scoped_context(context_provider); |
| |
| gpu::gles2::GLES2Interface* gl = scoped_context.ContextGL(); |
| DCHECK(gl); |
| |
| // Note: Front buffer is guaranteed to be LRU so we can stop releasing |
| // buffers as soon as we find a buffer that has been used since |time|. |
| while (!free_buffers_.empty()) { |
| if (free_buffers_.front()->last_usage > time) |
| return; |
| |
| free_buffers_.front()->DestroyGLResources(gl); |
| MarkStagingBufferAsBusy(free_buffers_.front().get()); |
| RemoveStagingBuffer(free_buffers_.front().get()); |
| free_buffers_.pop_front(); |
| } |
| |
| while (!busy_buffers_.empty()) { |
| if (busy_buffers_.front()->last_usage > time) |
| return; |
| |
| busy_buffers_.front()->DestroyGLResources(gl); |
| RemoveStagingBuffer(busy_buffers_.front().get()); |
| busy_buffers_.pop_front(); |
| } |
| } |
| } |
| |
| } // namespace cc |
