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/*
** Copyright (c) 2021 LunarG, Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and associated documentation files (the "Software"),
** to deal in the Software without restriction, including without limitation
** the rights to use, copy, modify, merge, publish, distribute, sublicense,
** and/or sell copies of the Software, and to permit persons to whom the
** Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in
** all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
** FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
** DEALINGS IN THE SOFTWARE.
*/
#include "encode/iunknown_wrapper.h"
#include "encode/d3d12_capture_manager.h"
#include "encode/dx12_object_wrapper_resources.h"
#include "generated/generated_dx12_api_call_encoders.h"
#include "generated/generated_dx12_wrapper_creators.h"
GFXRECON_BEGIN_NAMESPACE(gfxrecon)
GFXRECON_BEGIN_NAMESPACE(encode)
IUnknown_Wrapper::IUnknown_Wrapper(REFIID riid,
IUnknown* wrapped_object,
DxWrapperResources* resources,
const std::function<void(IUnknown_Wrapper*)>& destructor) :
riid_(riid),
object_(wrapped_object, false), capture_id_(D3D12CaptureManager::GetUniqueId()), ref_count_(1)
{
assert(wrapped_object != nullptr);
// Register this wrapper with the list of related resources, which represents a list of pointers to the same object
// with different IIDs, all of which share a reference count and will stay active until all of the resources in the
// list are released by the application.
if (resources != nullptr)
{
resources_ = resources;
resources_->AddWrapper(this, destructor);
resources_->IncrementSharedCount();
}
else
{
resources_ = new DxWrapperResources();
resources_->AddWrapper(this, destructor);
}
}
HRESULT IUnknown_Wrapper::QueryInterface(REFIID riid, void** object)
{
// Check for a query from the capture framework to determine if an object with an IUknown* type is really a
// wrapped object. When the IID is a match, return a success code and a pointer to the current object
// without incrementing the reference count.
if (IsEqualIID(riid, IID_IUnknown_Wrapper))
{
(*object) = this;
return S_OK;
}
HRESULT result = E_FAIL;
auto manager = D3D12CaptureManager::Get();
auto call_scope = manager->IncrementCallScope();
if (call_scope == 1)
{
auto state_lock = manager->AcquireSharedStateLock();
IID target_interface_id = riid;
// If GFXRECON_CAPTURE_IUNKNOWN_WRAPPING is enabled:
// Detect when applications call QueryInterface(IID_IUnknown)
// Switch IID_IUnknown to original IID, so that GFXR returns original interface wrapper
if (manager->GetIUnknownWrappingSetting() && IsEqualGUID(riid, IID_IUnknown))
{
GFXRECON_LOG_WARNING("Detect call QueryInterface(IID_IUnknown)");
target_interface_id = riid_;
}
result = object_->QueryInterface(target_interface_id, object);
if (SUCCEEDED(result))
{
WrapObject(target_interface_id, object, resources_);
}
Encode_IUnknown_QueryInterface(this, result, target_interface_id, object);
}
else
{
result = object_->QueryInterface(riid, object);
}
manager->DecrementCallScope();
return result;
}
ULONG IUnknown_Wrapper::AddRef()
{
unsigned long local_count = ++ref_count_;
resources_->IncrementSharedCount();
auto manager = D3D12CaptureManager::Get();
auto call_scope = manager->IncrementCallScope();
if (call_scope == 1)
{
auto state_lock = manager->AcquireSharedStateLock();
Encode_IUnknown_AddRef(this, local_count);
}
manager->DecrementCallScope();
return local_count;
}
ULONG IUnknown_Wrapper::Release()
{
auto local_count = --ref_count_;
auto shared_count = resources_->DecrementSharedCount();
auto manager = D3D12CaptureManager::Get();
auto call_scope = manager->IncrementCallScope();
if (call_scope == 1)
{
auto state_lock = manager->AcquireSharedStateLock();
Encode_IUnknown_Release(this, local_count);
}
if (shared_count == 0)
{
// The resources_ destructor destroys this wrapper and all other wrappers linked to it, so no additional work
// may be performed in this function, as the current wrapper will no longer be valid.
delete resources_;
}
manager->DecrementCallScope();
return local_count;
}
void IUnknown_Wrapper::MakeRefInternal()
{
// Decrement the local reference count, while leaving the shared reference count unmodified.
--ref_count_;
}
void IUnknown_Wrapper::AddRefInternal()
{
resources_->IncrementSharedCount();
}
void IUnknown_Wrapper::ReleaseRefInternal()
{
auto shared_count = resources_->DecrementSharedCount();
if (shared_count == 0)
{
// The resources_ destructor destroys this wrapper and all other wrappers linked to it.
delete resources_;
}
}
GFXRECON_END_NAMESPACE(encode)
GFXRECON_END_NAMESPACE(gfxrecon)
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