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// Copyright 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 "components/view_manager/gles2/command_buffer_driver.h"
#include "base/bind.h"
#include "base/macros.h"
#include "base/memory/shared_memory.h"
#include "components/view_manager/gles2/command_buffer_type_conversions.h"
#include "components/view_manager/gles2/gpu_memory_tracker.h"
#include "components/view_manager/gles2/gpu_state.h"
#include "components/view_manager/gles2/mojo_buffer_backing.h"
#include "gpu/command_buffer/common/constants.h"
#include "gpu/command_buffer/common/value_state.h"
#include "gpu/command_buffer/service/command_buffer_service.h"
#include "gpu/command_buffer/service/context_group.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/gpu_scheduler.h"
#include "gpu/command_buffer/service/image_factory.h"
#include "gpu/command_buffer/service/image_manager.h"
#include "gpu/command_buffer/service/mailbox_manager.h"
#include "gpu/command_buffer/service/memory_tracking.h"
#include "gpu/command_buffer/service/sync_point_manager.h"
#include "gpu/command_buffer/service/valuebuffer_manager.h"
#include "mojo/converters/geometry/geometry_type_converters.h"
#include "mojo/platform_handle/platform_handle_functions.h"
#include "ui/gfx/gpu_memory_buffer.h"
#include "ui/gfx/vsync_provider.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_image_shared_memory.h"
#include "ui/gl/gl_surface.h"
namespace gles2 {
CommandBufferDriver::Client::~Client() {
}
CommandBufferDriver::CommandBufferDriver(scoped_refptr<GpuState> gpu_state)
: CommandBufferDriver(gfx::kNullAcceleratedWidget,
gpu_state,
base::Callback<void(CommandBufferDriver*)>()) {}
CommandBufferDriver::CommandBufferDriver(
gfx::AcceleratedWidget widget,
scoped_refptr<GpuState> gpu_state,
const base::Callback<void(CommandBufferDriver*)>& destruct_callback)
: client_(nullptr),
widget_(widget),
gpu_state_(gpu_state),
destruct_callback_(destruct_callback),
weak_factory_(this) {
}
CommandBufferDriver::~CommandBufferDriver() {
DestroyDecoder();
if (!destruct_callback_.is_null())
destruct_callback_.Run(this);
}
void CommandBufferDriver::Initialize(
mojo::CommandBufferSyncClientPtr sync_client,
mojo::CommandBufferLostContextObserverPtr loss_observer,
mojo::ScopedSharedBufferHandle shared_state) {
sync_client_ = sync_client.Pass();
loss_observer_ = loss_observer.Pass();
bool success = DoInitialize(shared_state.Pass());
mojo::GpuCapabilitiesPtr capabilities =
success ? mojo::GpuCapabilities::From(decoder_->GetCapabilities())
: mojo::GpuCapabilities::New();
sync_client_->DidInitialize(success, capabilities.Pass());
}
bool CommandBufferDriver::MakeCurrent() {
if (!decoder_)
return false;
if (decoder_->MakeCurrent())
return true;
DLOG(ERROR) << "Context lost because MakeCurrent failed.";
gpu::error::ContextLostReason reason =
static_cast<gpu::error::ContextLostReason>(
decoder_->GetContextLostReason());
command_buffer_->SetContextLostReason(reason);
command_buffer_->SetParseError(gpu::error::kLostContext);
OnContextLost(reason);
return false;
}
bool CommandBufferDriver::DoInitialize(
mojo::ScopedSharedBufferHandle shared_state) {
if (widget_ == gfx::kNullAcceleratedWidget)
surface_ = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
else {
surface_ = gfx::GLSurface::CreateViewGLSurface(widget_);
if (auto vsync_provider = surface_->GetVSyncProvider()) {
vsync_provider->GetVSyncParameters(
base::Bind(&CommandBufferDriver::OnUpdateVSyncParameters,
weak_factory_.GetWeakPtr()));
}
}
if (!surface_.get())
return false;
// TODO(piman): virtual contexts, gpu preference.
context_ = gfx::GLContext::CreateGLContext(
gpu_state_->share_group(), surface_.get(), gfx::PreferIntegratedGpu);
if (!context_.get())
return false;
if (!context_->MakeCurrent(surface_.get()))
return false;
// TODO(piman): ShaderTranslatorCache is currently per-ContextGroup but
// only needs to be per-thread.
bool bind_generates_resource = false;
scoped_refptr<gpu::gles2::ContextGroup> context_group =
new gpu::gles2::ContextGroup(
gpu_state_->mailbox_manager(), new GpuMemoryTracker,
new gpu::gles2::ShaderTranslatorCache, nullptr, nullptr, nullptr,
bind_generates_resource);
command_buffer_.reset(
new gpu::CommandBufferService(context_group->transfer_buffer_manager()));
bool result = command_buffer_->Initialize();
DCHECK(result);
decoder_.reset(::gpu::gles2::GLES2Decoder::Create(context_group.get()));
scheduler_.reset(new gpu::GpuScheduler(command_buffer_.get(), decoder_.get(),
decoder_.get()));
decoder_->set_engine(scheduler_.get());
decoder_->SetResizeCallback(
base::Bind(&CommandBufferDriver::OnResize, base::Unretained(this)));
decoder_->SetWaitSyncPointCallback(base::Bind(
&CommandBufferDriver::OnWaitSyncPoint, base::Unretained(this)));
gpu::gles2::DisallowedFeatures disallowed_features;
// TODO(piman): attributes.
std::vector<int32> attrib_vector;
if (!decoder_->Initialize(surface_, context_, false /* offscreen */,
gfx::Size(1, 1), disallowed_features,
attrib_vector))
return false;
command_buffer_->SetPutOffsetChangeCallback(base::Bind(
&gpu::GpuScheduler::PutChanged, base::Unretained(scheduler_.get())));
command_buffer_->SetGetBufferChangeCallback(base::Bind(
&gpu::GpuScheduler::SetGetBuffer, base::Unretained(scheduler_.get())));
command_buffer_->SetParseErrorCallback(
base::Bind(&CommandBufferDriver::OnParseError, base::Unretained(this)));
// TODO(piman): other callbacks
const size_t kSize = sizeof(gpu::CommandBufferSharedState);
scoped_ptr<gpu::BufferBacking> backing(
gles2::MojoBufferBacking::Create(shared_state.Pass(), kSize));
if (!backing)
return false;
command_buffer_->SetSharedStateBuffer(backing.Pass());
return true;
}
void CommandBufferDriver::SetGetBuffer(int32_t buffer) {
command_buffer_->SetGetBuffer(buffer);
}
void CommandBufferDriver::Flush(int32_t put_offset) {
if (!context_)
return;
if (!context_->MakeCurrent(surface_.get())) {
DLOG(WARNING) << "Context lost";
OnContextLost(gpu::error::kUnknown);
return;
}
command_buffer_->Flush(put_offset);
}
void CommandBufferDriver::DestroyWindow() {
DestroyDecoder();
surface_ = nullptr;
context_ = nullptr;
destruct_callback_.Reset();
}
void CommandBufferDriver::MakeProgress(int32_t last_get_offset) {
// TODO(piman): handle out-of-order.
sync_client_->DidMakeProgress(
mojo::CommandBufferState::From(command_buffer_->GetLastState()));
}
void CommandBufferDriver::RegisterTransferBuffer(
int32_t id,
mojo::ScopedSharedBufferHandle transfer_buffer,
uint32_t size) {
// Take ownership of the memory and map it into this process.
// This validates the size.
scoped_ptr<gpu::BufferBacking> backing(
gles2::MojoBufferBacking::Create(transfer_buffer.Pass(), size));
if (!backing) {
DVLOG(0) << "Failed to map shared memory.";
return;
}
command_buffer_->RegisterTransferBuffer(id, backing.Pass());
}
void CommandBufferDriver::DestroyTransferBuffer(int32_t id) {
command_buffer_->DestroyTransferBuffer(id);
}
void CommandBufferDriver::Echo(const mojo::Callback<void()>& callback) {
callback.Run();
}
void CommandBufferDriver::CreateImage(int32_t id,
mojo::ScopedHandle memory_handle,
int32 type,
mojo::SizePtr size,
int32_t format,
int32_t internal_format) {
if (!MakeCurrent())
return;
gpu::gles2::ImageManager* image_manager = decoder_->GetImageManager();
if (image_manager->LookupImage(id)) {
LOG(ERROR) << "Image already exists with same ID.";
return;
}
gfx::BufferFormat gpu_format = static_cast<gfx::BufferFormat>(format);
if (!gpu::ImageFactory::IsGpuMemoryBufferFormatSupported(
gpu_format, decoder_->GetCapabilities())) {
LOG(ERROR) << "Format is not supported.";
return;
}
gfx::Size gfx_size = size.To<gfx::Size>();
if (!gpu::ImageFactory::IsImageSizeValidForGpuMemoryBufferFormat(
gfx_size, gpu_format)) {
LOG(ERROR) << "Invalid image size for format.";
return;
}
if (!gpu::ImageFactory::IsImageFormatCompatibleWithGpuMemoryBufferFormat(
internal_format, gpu_format)) {
LOG(ERROR) << "Incompatible image format.";
return;
}
if (type != gfx::SHARED_MEMORY_BUFFER) {
NOTIMPLEMENTED();
return;
}
gfx::GpuMemoryBufferHandle gfx_handle;
// TODO(jam): create mojo enum for this and converter
gfx_handle.type = static_cast<gfx::GpuMemoryBufferType>(type);
gfx_handle.id = gfx::GpuMemoryBufferId(id);
MojoPlatformHandle platform_handle;
MojoResult extract_result = MojoExtractPlatformHandle(
memory_handle.release().value(),
&platform_handle);
if (extract_result != MOJO_RESULT_OK) {
NOTREACHED();
return;
}
#if defined(OS_WIN)
gfx_handle.handle = platform_handle;
#else
gfx_handle.handle = base::FileDescriptor(platform_handle, false);
#endif
scoped_refptr<gfx::GLImageSharedMemory> image =
new gfx::GLImageSharedMemory(gfx_size, internal_format);
// TODO(jam): also need a mojo enum for this enum
if (!image->Initialize(gfx_handle, gpu_format)) {
NOTREACHED();
return;
}
image_manager->AddImage(image.get(), id);
}
void CommandBufferDriver::DestroyImage(int32_t id) {
gpu::gles2::ImageManager* image_manager = decoder_->GetImageManager();
if (!image_manager->LookupImage(id)) {
LOG(ERROR) << "Image with ID doesn't exist.";
return;
}
if (!MakeCurrent())
return;
image_manager->RemoveImage(id);
}
void CommandBufferDriver::OnParseError() {
gpu::CommandBuffer::State state = command_buffer_->GetLastState();
OnContextLost(state.context_lost_reason);
}
void CommandBufferDriver::OnResize(gfx::Size size, float scale_factor) {
surface_->Resize(size);
}
bool CommandBufferDriver::OnWaitSyncPoint(uint32_t sync_point) {
if (!sync_point)
return true;
if (gpu_state_->sync_point_manager()->IsSyncPointRetired(sync_point))
return true;
scheduler_->SetScheduled(false);
gpu_state_->sync_point_manager()->AddSyncPointCallback(
sync_point, base::Bind(&CommandBufferDriver::OnSyncPointRetired,
weak_factory_.GetWeakPtr()));
return scheduler_->IsScheduled();
}
void CommandBufferDriver::OnSyncPointRetired() {
scheduler_->SetScheduled(true);
}
void CommandBufferDriver::OnContextLost(uint32_t reason) {
loss_observer_->DidLoseContext(reason);
client_->DidLoseContext();
}
void CommandBufferDriver::OnUpdateVSyncParameters(
const base::TimeTicks timebase,
const base::TimeDelta interval) {
client_->UpdateVSyncParameters(timebase, interval);
}
void CommandBufferDriver::DestroyDecoder() {
if (decoder_) {
bool have_context = decoder_->MakeCurrent();
decoder_->Destroy(have_context);
decoder_.reset();
}
}
} // namespace gles2
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