blob: 4e2874c053f8656f8903640aaef7480686aba412 [file] [log] [blame]
// 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_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 {
CompositorOutputSurface::CompositorOutputSurface(
int32 routing_id,
uint32 output_surface_id,
const scoped_refptr<ContextProviderCommandBuffer>& context_provider,
scoped_ptr<cc::SoftwareOutputDevice> software_device,
scoped_refptr<FrameSwapMessageQueue> 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_message_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());
if (!HasClient())
return;
UpdateSmoothnessTakesPriority(false);
if (output_surface_proxy_.get())
output_surface_proxy_->ClearOutputSurface();
output_surface_filter_->RemoveHandlerOnCompositorThread(
routing_id_,
output_surface_filter_handler_);
}
bool CompositorOutputSurface::BindToClient(
cc::OutputSurfaceClient* client) {
DCHECK(CalledOnValidThread());
if (!cc::OutputSurface::BindToClient(client))
return false;
output_surface_proxy_ = new CompositorOutputSurfaceProxy(this);
output_surface_filter_handler_ =
base::Bind(&CompositorOutputSurfaceProxy::OnMessageReceived,
output_surface_proxy_);
output_surface_filter_->AddHandlerOnCompositorThread(
routing_id_,
output_surface_filter_handler_);
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<cc::GLFrameData> gl_frame_data,
scoped_ptr<cc::SoftwareFrameData> 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) {
DCHECK(use_swap_compositor_frame_message_);
if (layout_test_mode_) {
// 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;
} else {
{
ScopedVector<IPC::Message> messages;
std::vector<IPC::Message> messages_to_deliver_with_frame;
scoped_ptr<FrameSwapMessageQueue::SendMessageScope> 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();
}
}
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);
IPC_END_MESSAGE_MAP()
}
void CompositorOutputSurface::OnUpdateVSyncParametersFromBrowser(
base::TimeTicks timebase,
base::TimeDelta interval) {
DCHECK(CalledOnValidThread());
CommitVSyncParameters(timebase, interval);
}
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