// 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/render_thread_impl.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, 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()), 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 { DCHECK(output_surface_filter_.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()); SetNeedsBeginImplFrame(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( 64 * 1024 * 1024, gpu::MemoryAllocation::CUTOFF_ALLOW_NICE_TO_HAVE, cc::ManagedMemoryPolicy::kDefaultNumResourcesLimit)); } return true; } void CompositorOutputSurface::SwapBuffers(cc::CompositorFrame* frame) { if (use_swap_compositor_frame_message_) { Send(new ViewHostMsg_SwapCompositorFrame(routing_id_, output_surface_id_, *frame)); DidSwapBuffers(); return; } if (frame->gl_frame_data) { WebGraphicsContext3DCommandBufferImpl* command_buffer_context = static_cast( context_provider_->Context3d()); CommandBufferProxyImpl* command_buffer_proxy = command_buffer_context->GetCommandBufferProxy(); DCHECK(command_buffer_proxy); context_provider_->Context3d()->shallowFlushCHROMIUM(); 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, OnUpdateVSyncParameters); IPC_MESSAGE_HANDLER(ViewMsg_SwapCompositorFrameAck, OnSwapAck); IPC_MESSAGE_HANDLER(ViewMsg_ReclaimCompositorResources, OnReclaimResources); #if defined(OS_ANDROID) IPC_MESSAGE_HANDLER(ViewMsg_BeginFrame, OnBeginImplFrame); #endif IPC_END_MESSAGE_MAP() } void CompositorOutputSurface::OnUpdateVSyncParameters( base::TimeTicks timebase, base::TimeDelta interval) { DCHECK(CalledOnValidThread()); OnVSyncParametersChanged(timebase, interval); } #if defined(OS_ANDROID) void CompositorOutputSurface::SetNeedsBeginImplFrame(bool enable) { DCHECK(CalledOnValidThread()); if (needs_begin_impl_frame_ != enable) Send(new ViewHostMsg_SetNeedsBeginFrame(routing_id_, enable)); OutputSurface::SetNeedsBeginImplFrame(enable); } void CompositorOutputSurface::OnBeginImplFrame(const cc::BeginFrameArgs& args) { DCHECK(CalledOnValidThread()); BeginImplFrame(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); OnSwapBuffersComplete(); } 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