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// Copyright (c) 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 "content/common/gpu/null_transport_surface.h"
#include "base/command_line.h"
#include "content/common/gpu/gpu_channel.h"
#include "content/common/gpu/gpu_channel_manager.h"
#include "content/common/gpu/gpu_command_buffer_stub.h"
#include "content/public/common/content_switches.h"
#include "gpu/command_buffer/service/context_group.h"
namespace content {
NullTransportSurface::NullTransportSurface(
GpuChannelManager* manager,
GpuCommandBufferStub* stub,
const gfx::GLSurfaceHandle& handle)
: PassThroughImageTransportSurface(manager,
stub,
manager->GetDefaultOffscreenSurface()),
parent_client_id_(handle.parent_client_id) {
}
NullTransportSurface::~NullTransportSurface() {
}
bool NullTransportSurface::Initialize() {
if (!surface())
return false;
if (!PassThroughImageTransportSurface::Initialize())
return false;
GpuChannel* parent_channel =
GetHelper()->manager()->LookupChannel(parent_client_id_);
if (parent_channel) {
const base::CommandLine* command_line =
base::CommandLine::ForCurrentProcess();
if (command_line->HasSwitch(switches::kUIPrioritizeInGpuProcess))
GetHelper()->SetPreemptByFlag(parent_channel->GetPreemptionFlag());
}
return true;
}
void NullTransportSurface::Destroy() {
// Do not destroy |surface_| since we use the shared offscreen surface.
}
gfx::SwapResult NullTransportSurface::SwapBuffers() {
NOTIMPLEMENTED();
return gfx::SwapResult::SWAP_FAILED;
}
gfx::SwapResult NullTransportSurface::PostSubBuffer(int x,
int y,
int width,
int height) {
NOTIMPLEMENTED();
return gfx::SwapResult::SWAP_FAILED;
}
void NullTransportSurface::SendVSyncUpdateIfAvailable() {
NOTREACHED();
}
bool NullTransportSurface::OnMakeCurrent(gfx::GLContext* context) {
// Override PassThroughImageTransportSurface default behavior which
// sets the swap interval.
return true;
}
} // namespace content
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