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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#include "ScopedQueryHelper.hpp"
namespace Diligent
{
ScopedQueryHelper::ScopedQueryHelper(IRenderDevice* pDevice,
const QueryDesc& queryDesc,
Uint32 NumQueriesToReserve,
Uint32 ExpectedQueryLimit) :
m_pDevice{pDevice},
m_QueryDesc{queryDesc},
m_ExpectedQueryLimit{ExpectedQueryLimit}
{
VERIFY(queryDesc.Type != QUERY_TYPE_TIMESTAMP, "Scoped query type is expected");
m_AvailableQueries.resize(NumQueriesToReserve);
for (Uint32 i = 0; i < NumQueriesToReserve; ++i)
{
m_pDevice->CreateQuery(queryDesc, &m_AvailableQueries[i]);
VERIFY(m_AvailableQueries[i], "Failed to create query");
}
}
void ScopedQueryHelper::Begin(IDeviceContext* pCtx)
{
if (m_AvailableQueries.empty())
{
m_AvailableQueries.resize(1);
m_pDevice->CreateQuery(m_QueryDesc, &m_AvailableQueries.front());
}
auto pQuery = std::move(m_AvailableQueries.back());
m_AvailableQueries.pop_back();
pCtx->BeginQuery(pQuery);
m_PendingQueries.push_front(std::move(pQuery));
}
bool ScopedQueryHelper::End(IDeviceContext* pCtx, void* pData, Uint32 DataSize)
{
if (m_PendingQueries.empty())
{
LOG_ERROR_MESSAGE("There are no pending queries, which likely indicates incosistent Begin()/End() calls");
return false;
}
if (m_PendingQueries.size() > m_ExpectedQueryLimit)
{
LOG_WARNING_MESSAGE("There are ", m_PendingQueries.size(), " pending queries which exceeds the specified expected limit (", m_ExpectedQueryLimit, ")");
}
pCtx->EndQuery(m_PendingQueries.front());
auto& pLastQuery = m_PendingQueries.back();
auto DataAvailable = pLastQuery->GetData(pData, DataSize);
if (DataAvailable)
{
m_AvailableQueries.emplace_back(std::move(pLastQuery));
m_PendingQueries.pop_back();
}
return DataAvailable;
}
} // namespace Diligent
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