// Copyright (c) 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 "content/renderer/gpu/compositor_output_surface.h" #include "base/command_line.h" #include "base/message_loop/message_loop_proxy.h" #include "cc/output/compositor_frame.h" #include "cc/output/compositor_frame_ack.h" #include "cc/output/managed_memory_policy.h" #include "cc/output/output_surface_client.h" #include "content/common/gpu/client/command_buffer_proxy_impl.h" #include "content/common/gpu/client/context_provider_command_buffer.h" #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h" #include "content/common/view_messages.h" #include "content/public/common/content_switches.h" #include "content/renderer/gpu/frame_swap_message_queue.h" #include "content/renderer/render_thread_impl.h" #include "gpu/command_buffer/client/context_support.h" #include "gpu/command_buffer/client/gles2_interface.h" #include "ipc/ipc_forwarding_message_filter.h" #include "ipc/ipc_sync_channel.h" namespace { // There are several compositor surfaces in a process, but they share the same // compositor thread, so we use a simple int here to track prefer-smoothness. int g_prefer_smoothness_count = 0; } // namespace namespace content { //------------------------------------------------------------------------------ // static IPC::ForwardingMessageFilter* CompositorOutputSurface::CreateFilter( base::TaskRunner* target_task_runner) { uint32 messages_to_filter[] = { ViewMsg_UpdateVSyncParameters::ID, ViewMsg_SwapCompositorFrameAck::ID, ViewMsg_ReclaimCompositorResources::ID, #if defined(OS_ANDROID) ViewMsg_BeginFrame::ID #endif }; return new IPC::ForwardingMessageFilter( messages_to_filter, arraysize(messages_to_filter), target_task_runner); } CompositorOutputSurface::CompositorOutputSurface( int32 routing_id, uint32 output_surface_id, const scoped_refptr& context_provider, scoped_ptr software_device, scoped_refptr swap_frame_message_queue, bool use_swap_compositor_frame_message) : OutputSurface(context_provider, software_device.Pass()), output_surface_id_(output_surface_id), use_swap_compositor_frame_message_(use_swap_compositor_frame_message), output_surface_filter_( RenderThreadImpl::current()->compositor_output_surface_filter()), frame_swap_message_queue_(swap_frame_message_queue), routing_id_(routing_id), prefers_smoothness_(false), #if defined(OS_WIN) // TODO(epenner): Implement PlatformThread::CurrentHandle() on windows. main_thread_handle_(base::PlatformThreadHandle()), #else main_thread_handle_(base::PlatformThread::CurrentHandle()), #endif layout_test_mode_(RenderThreadImpl::current()->layout_test_mode()), weak_ptrs_(this) { DCHECK(output_surface_filter_.get()); DCHECK(frame_swap_message_queue_.get()); DetachFromThread(); message_sender_ = RenderThreadImpl::current()->sync_message_filter(); DCHECK(message_sender_.get()); if (OutputSurface::software_device()) capabilities_.max_frames_pending = 1; } CompositorOutputSurface::~CompositorOutputSurface() { DCHECK(CalledOnValidThread()); SetNeedsBeginFrame(false); if (!HasClient()) return; UpdateSmoothnessTakesPriority(false); if (output_surface_proxy_.get()) output_surface_proxy_->ClearOutputSurface(); output_surface_filter_->RemoveRoute(routing_id_); } bool CompositorOutputSurface::BindToClient( cc::OutputSurfaceClient* client) { DCHECK(CalledOnValidThread()); if (!cc::OutputSurface::BindToClient(client)) return false; output_surface_proxy_ = new CompositorOutputSurfaceProxy(this); output_surface_filter_->AddRoute( routing_id_, base::Bind(&CompositorOutputSurfaceProxy::OnMessageReceived, output_surface_proxy_)); if (!context_provider()) { // Without a GPU context, the memory policy otherwise wouldn't be set. client->SetMemoryPolicy(cc::ManagedMemoryPolicy( 128 * 1024 * 1024, gpu::MemoryAllocation::CUTOFF_ALLOW_NICE_TO_HAVE, base::SharedMemory::GetHandleLimit() / 3)); } return true; } void CompositorOutputSurface::ShortcutSwapAck( uint32 output_surface_id, scoped_ptr gl_frame_data, scoped_ptr software_frame_data) { if (!layout_test_previous_frame_ack_) { layout_test_previous_frame_ack_.reset(new cc::CompositorFrameAck); layout_test_previous_frame_ack_->gl_frame_data.reset(new cc::GLFrameData); } OnSwapAck(output_surface_id, *layout_test_previous_frame_ack_); layout_test_previous_frame_ack_->gl_frame_data = gl_frame_data.Pass(); layout_test_previous_frame_ack_->last_software_frame_id = software_frame_data ? software_frame_data->id : 0; } void CompositorOutputSurface::SwapBuffers(cc::CompositorFrame* frame) { if (layout_test_mode_ && use_swap_compositor_frame_message_) { // This code path is here to support layout tests that are currently // doing a readback in the renderer instead of the browser. So they // are using deprecated code paths in the renderer and don't need to // actually swap anything to the browser. We shortcut the swap to the // browser here and just ack directly within the renderer process. // Once crbug.com/311404 is fixed, this can be removed. // This would indicate that crbug.com/311404 is being fixed, and this // block needs to be removed. DCHECK(!frame->delegated_frame_data); base::Closure closure = base::Bind(&CompositorOutputSurface::ShortcutSwapAck, weak_ptrs_.GetWeakPtr(), output_surface_id_, base::Passed(&frame->gl_frame_data), base::Passed(&frame->software_frame_data)); if (context_provider()) { gpu::gles2::GLES2Interface* context = context_provider()->ContextGL(); context->Flush(); uint32 sync_point = context->InsertSyncPointCHROMIUM(); context_provider()->ContextSupport()->SignalSyncPoint(sync_point, closure); } else { base::MessageLoopProxy::current()->PostTask(FROM_HERE, closure); } client_->DidSwapBuffers(); return; } if (use_swap_compositor_frame_message_) { { ScopedVector messages; std::vector messages_to_deliver_with_frame; scoped_ptr send_message_scope = frame_swap_message_queue_->AcquireSendMessageScope(); frame_swap_message_queue_->DrainMessages(&messages); FrameSwapMessageQueue::TransferMessages(messages, &messages_to_deliver_with_frame); Send(new ViewHostMsg_SwapCompositorFrame(routing_id_, output_surface_id_, *frame, messages_to_deliver_with_frame)); // ~send_message_scope. } client_->DidSwapBuffers(); return; } if (frame->gl_frame_data) { context_provider()->ContextGL()->ShallowFlushCHROMIUM(); ContextProviderCommandBuffer* provider_command_buffer = static_cast(context_provider().get()); CommandBufferProxyImpl* command_buffer_proxy = provider_command_buffer->GetCommandBufferProxy(); DCHECK(command_buffer_proxy); command_buffer_proxy->SetLatencyInfo(frame->metadata.latency_info); } OutputSurface::SwapBuffers(frame); } void CompositorOutputSurface::OnMessageReceived(const IPC::Message& message) { DCHECK(CalledOnValidThread()); if (!HasClient()) return; IPC_BEGIN_MESSAGE_MAP(CompositorOutputSurface, message) IPC_MESSAGE_HANDLER(ViewMsg_UpdateVSyncParameters, OnUpdateVSyncParametersFromBrowser); IPC_MESSAGE_HANDLER(ViewMsg_SwapCompositorFrameAck, OnSwapAck); IPC_MESSAGE_HANDLER(ViewMsg_ReclaimCompositorResources, OnReclaimResources); #if defined(OS_ANDROID) IPC_MESSAGE_HANDLER(ViewMsg_BeginFrame, OnBeginFrame); #endif IPC_END_MESSAGE_MAP() } void CompositorOutputSurface::OnUpdateVSyncParametersFromBrowser( base::TimeTicks timebase, base::TimeDelta interval) { DCHECK(CalledOnValidThread()); CommitVSyncParameters(timebase, interval); } #if defined(OS_ANDROID) void CompositorOutputSurface::SetNeedsBeginFrame(bool enable) { DCHECK(CalledOnValidThread()); Send(new ViewHostMsg_SetNeedsBeginFrame(routing_id_, enable)); } void CompositorOutputSurface::OnBeginFrame(const cc::BeginFrameArgs& args) { DCHECK(CalledOnValidThread()); client_->BeginFrame(args); } #endif // defined(OS_ANDROID) void CompositorOutputSurface::OnSwapAck(uint32 output_surface_id, const cc::CompositorFrameAck& ack) { // Ignore message if it's a stale one coming from a different output surface // (e.g. after a lost context). if (output_surface_id != output_surface_id_) return; ReclaimResources(&ack); client_->DidSwapBuffersComplete(); } void CompositorOutputSurface::OnReclaimResources( uint32 output_surface_id, const cc::CompositorFrameAck& ack) { // Ignore message if it's a stale one coming from a different output surface // (e.g. after a lost context). if (output_surface_id != output_surface_id_) return; ReclaimResources(&ack); } bool CompositorOutputSurface::Send(IPC::Message* message) { return message_sender_->Send(message); } namespace { #if defined(OS_ANDROID) void SetThreadPriorityToIdle(base::PlatformThreadHandle handle) { base::PlatformThread::SetThreadPriority( handle, base::kThreadPriority_Background); } void SetThreadPriorityToDefault(base::PlatformThreadHandle handle) { base::PlatformThread::SetThreadPriority( handle, base::kThreadPriority_Normal); } #else void SetThreadPriorityToIdle(base::PlatformThreadHandle handle) {} void SetThreadPriorityToDefault(base::PlatformThreadHandle handle) {} #endif } void CompositorOutputSurface::UpdateSmoothnessTakesPriority( bool prefers_smoothness) { #ifndef NDEBUG // If we use different compositor threads, we need to // use an atomic int to track prefer smoothness count. base::PlatformThreadId g_last_thread = base::PlatformThread::CurrentId(); DCHECK_EQ(g_last_thread, base::PlatformThread::CurrentId()); #endif if (prefers_smoothness_ == prefers_smoothness) return; // If this is the first surface to start preferring smoothness, // Throttle the main thread's priority. if (prefers_smoothness_ == false && ++g_prefer_smoothness_count == 1) { SetThreadPriorityToIdle(main_thread_handle_); } // If this is the last surface to stop preferring smoothness, // Reset the main thread's priority to the default. if (prefers_smoothness_ == true && --g_prefer_smoothness_count == 0) { SetThreadPriorityToDefault(main_thread_handle_); } prefers_smoothness_ = prefers_smoothness; } } // namespace content