blob: eb7096499b2d23d29552e8c61b652968f97e7267 [file] [log] [blame]
// 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/common/gpu/client/context_provider_command_buffer.h"
#include <set>
#include <vector>
#include "base/callback_helpers.h"
#include "base/strings/stringprintf.h"
#include "cc/output/managed_memory_policy.h"
#include "content/common/gpu/client/grcontext_for_webgraphicscontext3d.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "third_party/skia/include/gpu/GrContext.h"
namespace content {
class ContextProviderCommandBuffer::LostContextCallbackProxy
: public blink::WebGraphicsContext3D::WebGraphicsContextLostCallback {
public:
explicit LostContextCallbackProxy(ContextProviderCommandBuffer* provider)
: provider_(provider) {
provider_->context3d_->setContextLostCallback(this);
}
virtual ~LostContextCallbackProxy() {
provider_->context3d_->setContextLostCallback(NULL);
}
virtual void onContextLost() {
provider_->OnLostContext();
}
private:
ContextProviderCommandBuffer* provider_;
};
scoped_refptr<ContextProviderCommandBuffer>
ContextProviderCommandBuffer::Create(
scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
CommandBufferContextType type) {
if (!context3d)
return NULL;
return new ContextProviderCommandBuffer(context3d.Pass(), type);
}
ContextProviderCommandBuffer::ContextProviderCommandBuffer(
scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
CommandBufferContextType type)
: context3d_(context3d.Pass()),
context_type_(type),
debug_name_(CommandBufferContextTypeToString(type)),
destroyed_(false) {
DCHECK(main_thread_checker_.CalledOnValidThread());
DCHECK(context3d_);
context_thread_checker_.DetachFromThread();
}
ContextProviderCommandBuffer::~ContextProviderCommandBuffer() {
DCHECK(main_thread_checker_.CalledOnValidThread() ||
context_thread_checker_.CalledOnValidThread());
base::AutoLock lock(main_thread_lock_);
// Destroy references to the context3d_ before leaking it.
if (context3d_->GetCommandBufferProxy()) {
context3d_->GetCommandBufferProxy()->SetLock(nullptr);
context3d_->GetCommandBufferProxy()->SetMemoryAllocationChangedCallback(
CommandBufferProxyImpl::MemoryAllocationChangedCallback());
}
lost_context_callback_proxy_.reset();
}
CommandBufferProxyImpl* ContextProviderCommandBuffer::GetCommandBufferProxy() {
return context3d_->GetCommandBufferProxy();
}
WebGraphicsContext3DCommandBufferImpl*
ContextProviderCommandBuffer::WebContext3D() {
DCHECK(context3d_);
DCHECK(lost_context_callback_proxy_); // Is bound to thread.
DCHECK(context_thread_checker_.CalledOnValidThread());
return context3d_.get();
}
bool ContextProviderCommandBuffer::BindToCurrentThread() {
// This is called on the thread the context will be used.
DCHECK(context_thread_checker_.CalledOnValidThread());
if (lost_context_callback_proxy_)
return true;
context3d_->SetContextType(context_type_);
if (!context3d_->InitializeOnCurrentThread())
return false;
InitializeCapabilities();
std::string unique_context_name =
base::StringPrintf("%s-%p", debug_name_.c_str(), context3d_.get());
context3d_->traceBeginCHROMIUM("gpu_toplevel", unique_context_name.c_str());
lost_context_callback_proxy_.reset(new LostContextCallbackProxy(this));
context3d_->GetCommandBufferProxy()->SetMemoryAllocationChangedCallback(
base::Bind(&ContextProviderCommandBuffer::OnMemoryAllocationChanged,
base::Unretained(this)));
return true;
}
void ContextProviderCommandBuffer::DetachFromThread() {
context_thread_checker_.DetachFromThread();
}
gpu::gles2::GLES2Interface* ContextProviderCommandBuffer::ContextGL() {
DCHECK(context3d_);
DCHECK(lost_context_callback_proxy_); // Is bound to thread.
DCHECK(context_thread_checker_.CalledOnValidThread());
return context3d_->GetImplementation();
}
gpu::ContextSupport* ContextProviderCommandBuffer::ContextSupport() {
return context3d_->GetContextSupport();
}
class GrContext* ContextProviderCommandBuffer::GrContext() {
DCHECK(lost_context_callback_proxy_); // Is bound to thread.
DCHECK(context_thread_checker_.CalledOnValidThread());
if (gr_context_)
return gr_context_->get();
gr_context_.reset(new GrContextForWebGraphicsContext3D(context3d_.get()));
// If GlContext is already lost, also abandon the new GrContext.
if (IsContextLost())
gr_context_->get()->abandonContext();
return gr_context_->get();
}
void ContextProviderCommandBuffer::SetupLock() {
DCHECK(context3d_);
context3d_->GetCommandBufferProxy()->SetLock(&context_lock_);
}
base::Lock* ContextProviderCommandBuffer::GetLock() {
return &context_lock_;
}
cc::ContextProvider::Capabilities
ContextProviderCommandBuffer::ContextCapabilities() {
DCHECK(lost_context_callback_proxy_); // Is bound to thread.
DCHECK(context_thread_checker_.CalledOnValidThread());
return capabilities_;
}
bool ContextProviderCommandBuffer::IsContextLost() {
DCHECK(lost_context_callback_proxy_); // Is bound to thread.
DCHECK(context_thread_checker_.CalledOnValidThread());
return context3d_->isContextLost();
}
void ContextProviderCommandBuffer::VerifyContexts() {
DCHECK(lost_context_callback_proxy_); // Is bound to thread.
DCHECK(context_thread_checker_.CalledOnValidThread());
if (context3d_->isContextLost())
OnLostContext();
}
void ContextProviderCommandBuffer::DeleteCachedResources() {
DCHECK(context_thread_checker_.CalledOnValidThread());
if (gr_context_)
gr_context_->FreeGpuResources();
}
void ContextProviderCommandBuffer::OnLostContext() {
DCHECK(context_thread_checker_.CalledOnValidThread());
{
base::AutoLock lock(main_thread_lock_);
if (destroyed_)
return;
destroyed_ = true;
}
if (!lost_context_callback_.is_null())
base::ResetAndReturn(&lost_context_callback_).Run();
if (gr_context_)
gr_context_->OnLostContext();
}
void ContextProviderCommandBuffer::OnMemoryAllocationChanged(
const gpu::MemoryAllocation& allocation) {
DCHECK(context_thread_checker_.CalledOnValidThread());
if (memory_policy_changed_callback_.is_null())
return;
memory_policy_changed_callback_.Run(cc::ManagedMemoryPolicy(allocation));
}
void ContextProviderCommandBuffer::InitializeCapabilities() {
Capabilities caps;
caps.gpu = context3d_->GetImplementation()->capabilities();
size_t mapped_memory_limit = context3d_->GetMappedMemoryLimit();
caps.max_transfer_buffer_usage_bytes =
mapped_memory_limit == WebGraphicsContext3DCommandBufferImpl::kNoLimit
? std::numeric_limits<size_t>::max() : mapped_memory_limit;
capabilities_ = caps;
}
bool ContextProviderCommandBuffer::DestroyedOnMainThread() {
DCHECK(main_thread_checker_.CalledOnValidThread());
base::AutoLock lock(main_thread_lock_);
return destroyed_;
}
void ContextProviderCommandBuffer::SetLostContextCallback(
const LostContextCallback& lost_context_callback) {
DCHECK(context_thread_checker_.CalledOnValidThread());
DCHECK(lost_context_callback_.is_null() ||
lost_context_callback.is_null());
lost_context_callback_ = lost_context_callback;
}
void ContextProviderCommandBuffer::SetMemoryPolicyChangedCallback(
const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
DCHECK(context_thread_checker_.CalledOnValidThread());
DCHECK(memory_policy_changed_callback_.is_null() ||
memory_policy_changed_callback.is_null());
memory_policy_changed_callback_ = memory_policy_changed_callback;
}
} // namespace content