dolphin/Source/Core/VideoBackends/D3D12/D3D12PerfQuery.h

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2019-03-28 10:35:46 +00:00
// Copyright 2019 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "VideoBackends/D3D12/DX12Context.h"
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#include "VideoCommon/PerfQueryBase.h"
namespace DX12
{
class PerfQuery final : public PerfQueryBase
{
public:
PerfQuery();
~PerfQuery();
static PerfQuery* GetInstance() { return static_cast<PerfQuery*>(g_perf_query.get()); }
bool Initialize();
void ResolveQueries();
void EnableQuery(PerfQueryGroup type) override;
void DisableQuery(PerfQueryGroup type) override;
void ResetQuery() override;
u32 GetQueryResult(PerfQueryType type) override;
void FlushResults() override;
bool IsFlushed() const override;
private:
struct ActiveQuery
{
u64 fence_value;
PerfQueryType query_type;
bool has_value;
bool resolved;
};
void ResolveQueries(u32 query_count);
void ReadbackQueries(bool blocking);
void AccumulateQueriesFromBuffer(u32 query_count);
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void PartialFlush(bool resolve, bool blocking);
// when testing in SMS: 64 was too small, 128 was ok
// TODO: This should be size_t, but the base class uses u32s
using PerfQueryDataType = u64;
static const u32 PERF_QUERY_BUFFER_SIZE = 512;
std::array<ActiveQuery, PERF_QUERY_BUFFER_SIZE> m_query_buffer = {};
u32 m_unresolved_queries = 0;
u32 m_query_resolve_pos = 0;
u32 m_query_readback_pos = 0;
u32 m_query_next_pos = 0;
ComPtr<ID3D12QueryHeap> m_query_heap;
ComPtr<ID3D12Resource> m_query_readback_buffer;
};
} // namespace DX12