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// Copyright (c) 2013 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/browser/aura/gpu_process_transport_factory.h"
#include <string>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/location.h"
#include "base/message_loop/message_loop.h"
#include "base/metrics/histogram.h"
#include "cc/output/compositor_frame.h"
#include "cc/output/output_surface.h"
#include "content/browser/aura/browser_compositor_output_surface.h"
#include "content/browser/aura/browser_compositor_output_surface_proxy.h"
#include "content/browser/aura/gpu_browser_compositor_output_surface.h"
#include "content/browser/aura/reflector_impl.h"
#include "content/browser/aura/software_browser_compositor_output_surface.h"
#include "content/browser/gpu/browser_gpu_channel_host_factory.h"
#include "content/browser/gpu/gpu_data_manager_impl.h"
#include "content/browser/gpu/gpu_surface_tracker.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/common/gpu/client/context_provider_command_buffer.h"
#include "content/common/gpu/client/gl_helper.h"
#include "content/common/gpu/client/gpu_channel_host.h"
#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
#include "content/common/gpu/gpu_process_launch_causes.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/size.h"
#if defined(OS_WIN)
#include "content/browser/aura/software_output_device_win.h"
#include "ui/surface/accelerated_surface_win.h"
#elif defined(USE_OZONE)
#include "content/browser/aura/software_output_device_ozone.h"
#elif defined(USE_X11)
#include "content/browser/aura/software_output_device_x11.h"
#endif
using cc::ContextProvider;
using gpu::gles2::GLES2Interface;
namespace content {
struct GpuProcessTransportFactory::PerCompositorData {
int surface_id;
#if defined(OS_WIN)
scoped_ptr<AcceleratedSurface> accelerated_surface;
#endif
scoped_refptr<ReflectorImpl> reflector;
};
class OwnedTexture : public ui::Texture, ImageTransportFactoryObserver {
public:
OwnedTexture(const scoped_refptr<ContextProvider>& provider,
const gfx::Size& size,
float device_scale_factor,
GLuint texture_id)
: ui::Texture(true, size, device_scale_factor),
provider_(provider),
texture_id_(texture_id) {
ImageTransportFactory::GetInstance()->AddObserver(this);
}
// ui::Texture overrides:
virtual unsigned int PrepareTexture() OVERRIDE {
// It's possible that we may have lost the context owning our
// texture but not yet fired the OnLostResources callback, so poll to see if
// it's still valid.
if (provider_ && provider_->IsContextLost())
texture_id_ = 0u;
return texture_id_;
}
// ImageTransportFactory overrides:
virtual void OnLostResources() OVERRIDE {
DeleteTexture();
provider_ = NULL;
}
protected:
virtual ~OwnedTexture() {
ImageTransportFactory::GetInstance()->RemoveObserver(this);
DeleteTexture();
}
protected:
void DeleteTexture() {
if (texture_id_) {
provider_->ContextGL()->DeleteTextures(1, &texture_id_);
texture_id_ = 0;
}
}
scoped_refptr<cc::ContextProvider> provider_;
GLuint texture_id_;
private:
DISALLOW_COPY_AND_ASSIGN(OwnedTexture);
};
class ImageTransportClientTexture : public OwnedTexture {
public:
ImageTransportClientTexture(const scoped_refptr<ContextProvider>& provider,
float device_scale_factor,
GLuint texture_id)
: OwnedTexture(provider,
gfx::Size(0, 0),
device_scale_factor,
texture_id) {}
virtual void Consume(const std::string& mailbox_name,
const gfx::Size& new_size) OVERRIDE {
DCHECK(mailbox_name.size() == GL_MAILBOX_SIZE_CHROMIUM);
mailbox_name_ = mailbox_name;
if (mailbox_name.empty())
return;
DCHECK(provider_ && texture_id_);
GLES2Interface* gl = provider_->ContextGL();
gl->BindTexture(GL_TEXTURE_2D, texture_id_);
gl->ConsumeTextureCHROMIUM(
GL_TEXTURE_2D, reinterpret_cast<const GLbyte*>(mailbox_name.c_str()));
size_ = new_size;
gl->ShallowFlushCHROMIUM();
}
virtual std::string Produce() OVERRIDE { return mailbox_name_; }
protected:
virtual ~ImageTransportClientTexture() {}
private:
std::string mailbox_name_;
DISALLOW_COPY_AND_ASSIGN(ImageTransportClientTexture);
};
GpuProcessTransportFactory::GpuProcessTransportFactory()
: callback_factory_(this) {
output_surface_proxy_ = new BrowserCompositorOutputSurfaceProxy(
&output_surface_map_);
}
GpuProcessTransportFactory::~GpuProcessTransportFactory() {
DCHECK(per_compositor_data_.empty());
// Make sure the lost context callback doesn't try to run during destruction.
callback_factory_.InvalidateWeakPtrs();
}
scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
GpuProcessTransportFactory::CreateOffscreenCommandBufferContext() {
return CreateContextCommon(0);
}
scoped_ptr<cc::SoftwareOutputDevice> CreateSoftwareOutputDevice(
ui::Compositor* compositor) {
#if defined(OS_WIN)
return scoped_ptr<cc::SoftwareOutputDevice>(new SoftwareOutputDeviceWin(
compositor));
#elif defined(USE_OZONE)
return scoped_ptr<cc::SoftwareOutputDevice>(new SoftwareOutputDeviceOzone(
compositor));
#elif defined(USE_X11)
return scoped_ptr<cc::SoftwareOutputDevice>(new SoftwareOutputDeviceX11(
compositor));
#endif
NOTREACHED();
return scoped_ptr<cc::SoftwareOutputDevice>();
}
scoped_ptr<cc::OutputSurface> GpuProcessTransportFactory::CreateOutputSurface(
ui::Compositor* compositor, bool software_fallback) {
PerCompositorData* data = per_compositor_data_[compositor];
if (!data)
data = CreatePerCompositorData(compositor);
scoped_refptr<ContextProviderCommandBuffer> context_provider;
CommandLine* command_line = CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(switches::kUIEnableSoftwareCompositing) &&
!software_fallback) {
context_provider = ContextProviderCommandBuffer::Create(
GpuProcessTransportFactory::CreateContextCommon(data->surface_id),
"Compositor");
}
UMA_HISTOGRAM_BOOLEAN("Aura.CreatedGpuBrowserCompositor", !!context_provider);
if (!context_provider.get()) {
if (ui::Compositor::WasInitializedWithThread()) {
LOG(FATAL) << "Failed to create UI context, but can't use software"
" compositing with browser threaded compositing. Aborting.";
}
scoped_ptr<SoftwareBrowserCompositorOutputSurface> surface(
new SoftwareBrowserCompositorOutputSurface(
output_surface_proxy_,
CreateSoftwareOutputDevice(compositor),
per_compositor_data_[compositor]->surface_id,
&output_surface_map_,
base::MessageLoopProxy::current().get(),
compositor->AsWeakPtr()));
return surface.PassAs<cc::OutputSurface>();
}
scoped_refptr<base::SingleThreadTaskRunner> compositor_thread_task_runner =
ui::Compositor::GetCompositorMessageLoop();
if (!compositor_thread_task_runner.get())
compositor_thread_task_runner = base::MessageLoopProxy::current();
// Here we know the GpuProcessHost has been set up, because we created a
// context.
output_surface_proxy_->ConnectToGpuProcessHost(
compositor_thread_task_runner.get());
scoped_ptr<BrowserCompositorOutputSurface> surface(
new GpuBrowserCompositorOutputSurface(
context_provider,
per_compositor_data_[compositor]->surface_id,
&output_surface_map_,
base::MessageLoopProxy::current().get(),
compositor->AsWeakPtr()));
if (data->reflector.get()) {
data->reflector->CreateSharedTexture();
data->reflector->AttachToOutputSurface(surface.get());
}
return surface.PassAs<cc::OutputSurface>();
}
scoped_refptr<ui::Reflector> GpuProcessTransportFactory::CreateReflector(
ui::Compositor* source,
ui::Layer* target) {
PerCompositorData* data = per_compositor_data_[source];
DCHECK(data);
if (data->reflector.get())
RemoveObserver(data->reflector.get());
data->reflector = new ReflectorImpl(
source, target, &output_surface_map_, data->surface_id);
AddObserver(data->reflector.get());
return data->reflector;
}
void GpuProcessTransportFactory::RemoveReflector(
scoped_refptr<ui::Reflector> reflector) {
ReflectorImpl* reflector_impl =
static_cast<ReflectorImpl*>(reflector.get());
PerCompositorData* data =
per_compositor_data_[reflector_impl->mirrored_compositor()];
DCHECK(data);
RemoveObserver(reflector_impl);
data->reflector->Shutdown();
data->reflector = NULL;
}
void GpuProcessTransportFactory::RemoveCompositor(ui::Compositor* compositor) {
PerCompositorDataMap::iterator it = per_compositor_data_.find(compositor);
if (it == per_compositor_data_.end())
return;
PerCompositorData* data = it->second;
DCHECK(data);
GpuSurfaceTracker::Get()->RemoveSurface(data->surface_id);
delete data;
per_compositor_data_.erase(it);
if (per_compositor_data_.empty())
gl_helper_.reset();
}
bool GpuProcessTransportFactory::DoesCreateTestContexts() { return false; }
ui::ContextFactory* GpuProcessTransportFactory::AsContextFactory() {
return this;
}
gfx::GLSurfaceHandle GpuProcessTransportFactory::GetSharedSurfaceHandle() {
gfx::GLSurfaceHandle handle = gfx::GLSurfaceHandle(
gfx::kNullPluginWindow, gfx::TEXTURE_TRANSPORT);
handle.parent_client_id =
BrowserGpuChannelHostFactory::instance()->GetGpuChannelId();
return handle;
}
scoped_refptr<ui::Texture> GpuProcessTransportFactory::CreateTransportClient(
float device_scale_factor) {
scoped_refptr<cc::ContextProvider> provider =
SharedMainThreadContextProvider();
if (!provider.get())
return NULL;
GLuint texture_id = 0;
provider->ContextGL()->GenTextures(1, &texture_id);
scoped_refptr<ImageTransportClientTexture> image(
new ImageTransportClientTexture(
provider, device_scale_factor, texture_id));
return image;
}
scoped_refptr<ui::Texture> GpuProcessTransportFactory::CreateOwnedTexture(
const gfx::Size& size,
float device_scale_factor,
unsigned int texture_id) {
scoped_refptr<cc::ContextProvider> provider =
SharedMainThreadContextProvider();
if (!provider.get())
return NULL;
scoped_refptr<OwnedTexture> image(new OwnedTexture(
provider, size, device_scale_factor, texture_id));
return image;
}
GLHelper* GpuProcessTransportFactory::GetGLHelper() {
if (!gl_helper_) {
scoped_refptr<cc::ContextProvider> provider =
SharedMainThreadContextProvider();
if (provider.get())
gl_helper_.reset(new GLHelper(provider->Context3d(),
provider->ContextSupport()));
}
return gl_helper_.get();
}
uint32 GpuProcessTransportFactory::InsertSyncPoint() {
scoped_refptr<cc::ContextProvider> provider =
SharedMainThreadContextProvider();
if (!provider.get())
return 0;
return provider->Context3d()->insertSyncPoint();
}
void GpuProcessTransportFactory::WaitSyncPoint(uint32 sync_point) {
scoped_refptr<cc::ContextProvider> provider =
SharedMainThreadContextProvider();
if (!provider.get())
return;
provider->Context3d()->waitSyncPoint(sync_point);
}
void GpuProcessTransportFactory::AddObserver(
ImageTransportFactoryObserver* observer) {
observer_list_.AddObserver(observer);
}
void GpuProcessTransportFactory::RemoveObserver(
ImageTransportFactoryObserver* observer) {
observer_list_.RemoveObserver(observer);
}
scoped_refptr<cc::ContextProvider>
GpuProcessTransportFactory::OffscreenCompositorContextProvider() {
// Don't check for DestroyedOnMainThread() here. We hear about context
// loss for this context through the lost context callback. If the context
// is lost, we want to leave this ContextProvider available until the lost
// context notification is sent to the ImageTransportFactoryObserver clients.
if (offscreen_compositor_contexts_.get())
return offscreen_compositor_contexts_;
offscreen_compositor_contexts_ = ContextProviderCommandBuffer::Create(
GpuProcessTransportFactory::CreateOffscreenCommandBufferContext(),
"Compositor-Offscreen");
return offscreen_compositor_contexts_;
}
scoped_refptr<cc::ContextProvider>
GpuProcessTransportFactory::SharedMainThreadContextProvider() {
if (shared_main_thread_contexts_.get())
return shared_main_thread_contexts_;
if (ui::Compositor::WasInitializedWithThread()) {
// In threaded compositing mode, we have to create our own context for the
// main thread since the compositor's context will be bound to the
// compositor thread.
shared_main_thread_contexts_ = ContextProviderCommandBuffer::Create(
GpuProcessTransportFactory::CreateOffscreenCommandBufferContext(),
"Offscreen-MainThread");
} else {
// In single threaded compositing mode, we can just reuse the compositor's
// shared context.
shared_main_thread_contexts_ =
static_cast<ContextProviderCommandBuffer*>(
OffscreenCompositorContextProvider().get());
}
if (shared_main_thread_contexts_) {
shared_main_thread_contexts_->SetLostContextCallback(
base::Bind(&GpuProcessTransportFactory::
OnLostMainThreadSharedContextInsideCallback,
callback_factory_.GetWeakPtr()));
if (!shared_main_thread_contexts_->BindToCurrentThread()) {
shared_main_thread_contexts_ = NULL;
offscreen_compositor_contexts_ = NULL;
}
}
return shared_main_thread_contexts_;
}
GpuProcessTransportFactory::PerCompositorData*
GpuProcessTransportFactory::CreatePerCompositorData(
ui::Compositor* compositor) {
DCHECK(!per_compositor_data_[compositor]);
gfx::AcceleratedWidget widget = compositor->widget();
GpuSurfaceTracker* tracker = GpuSurfaceTracker::Get();
PerCompositorData* data = new PerCompositorData;
data->surface_id = tracker->AddSurfaceForNativeWidget(widget);
#if defined(OS_WIN)
if (GpuDataManagerImpl::GetInstance()->IsUsingAcceleratedSurface())
data->accelerated_surface.reset(new AcceleratedSurface(widget));
#endif
tracker->SetSurfaceHandle(
data->surface_id,
gfx::GLSurfaceHandle(widget, gfx::NATIVE_DIRECT));
per_compositor_data_[compositor] = data;
return data;
}
scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
GpuProcessTransportFactory::CreateContextCommon(int surface_id) {
if (!GpuDataManagerImpl::GetInstance()->CanUseGpuBrowserCompositor())
return scoped_ptr<WebGraphicsContext3DCommandBufferImpl>();
blink::WebGraphicsContext3D::Attributes attrs;
attrs.shareResources = true;
attrs.depth = false;
attrs.stencil = false;
attrs.antialias = false;
attrs.noAutomaticFlushes = true;
CauseForGpuLaunch cause =
CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE;
scoped_refptr<GpuChannelHost> gpu_channel_host(
BrowserGpuChannelHostFactory::instance()->EstablishGpuChannelSync(cause));
if (!gpu_channel_host)
return scoped_ptr<WebGraphicsContext3DCommandBufferImpl>();
GURL url("chrome://gpu/GpuProcessTransportFactory::CreateContextCommon");
scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(
new WebGraphicsContext3DCommandBufferImpl(
surface_id,
url,
gpu_channel_host.get(),
attrs,
false,
WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits()));
return context.Pass();
}
void GpuProcessTransportFactory::OnLostMainThreadSharedContextInsideCallback() {
base::MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&GpuProcessTransportFactory::OnLostMainThreadSharedContext,
callback_factory_.GetWeakPtr()));
}
void GpuProcessTransportFactory::OnLostMainThreadSharedContext() {
LOG(ERROR) << "Lost UI shared context.";
// Keep old resources around while we call the observers, but ensure that
// new resources are created if needed.
// Kill shared contexts for both threads in tandem so they are always in
// the same share group.
scoped_refptr<cc::ContextProvider> lost_offscreen_compositor_contexts =
offscreen_compositor_contexts_;
scoped_refptr<cc::ContextProvider> lost_shared_main_thread_contexts =
shared_main_thread_contexts_;
offscreen_compositor_contexts_ = NULL;
shared_main_thread_contexts_ = NULL;
scoped_ptr<GLHelper> lost_gl_helper = gl_helper_.Pass();
FOR_EACH_OBSERVER(ImageTransportFactoryObserver,
observer_list_,
OnLostResources());
// Kill things that use the shared context before killing the shared context.
lost_gl_helper.reset();
lost_offscreen_compositor_contexts = NULL;
lost_shared_main_thread_contexts = NULL;
}
} // namespace content
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