1 files changed, 54 insertions, 0 deletions
diff --git a/Source/Core/VideoCommon/Src/PerfQueryBase.h b/Source/Core/VideoCommon/Src/PerfQueryBase.h
new file mode 100644
index 0000000000..b979449edb
--- /dev/null
+++ b/Source/Core/VideoCommon/Src/PerfQueryBase.h
@@ -0,0 +1,54 @@
+#ifndef _PERFQUERY_BASE_H_
+#define _PERFQUERY_BASE_H_
+
+#include "CommonTypes.h"
+
+enum PerfQueryType
+{
+	PQ_ZCOMP_INPUT_ZCOMPLOC = 0,
+	PQ_ZCOMP_OUTPUT_ZCOMPLOC,
+	PQ_ZCOMP_INPUT,
+	PQ_ZCOMP_OUTPUT,
+	PQ_BLEND_INPUT,
+	PQ_EFB_COPY_CLOCKS,
+	PQ_NUM_MEMBERS
+};
+
+enum PerfQueryGroup
+{
+	PQG_ZCOMP_ZCOMPLOC,
+	PQG_ZCOMP,
+	PQG_EFB_COPY_CLOCKS,
+	PQG_NUM_MEMBERS,
+};
+
+class PerfQueryBase
+{
+public:
+	PerfQueryBase() {};
+	virtual ~PerfQueryBase() {}
+
+	// Begin querying the specified value for the following host GPU commands
+	virtual void EnableQuery(PerfQueryGroup type) {}
+
+	// Stop querying the specified value for the following host GPU commands
+	virtual void DisableQuery(PerfQueryGroup type) {}
+
+	// Reset query counters to zero and drop any pending queries
+	virtual void ResetQuery() {}
+
+	// Return the measured value for the specified query type
+	// NOTE: Called from CPU thread
+	virtual u32 GetQueryResult(PerfQueryType type) { return 0; }
+
+	// Request the value of any pending queries - causes a pipeline flush and thus should be used carefully!
+	virtual void FlushResults() {}
+
+	// True if there are no further pending query results
+	// NOTE: Called from CPU thread
+	virtual bool IsFlushed() const { return true; }
+};
+
+extern PerfQueryBase* g_perf_query;
+
+#endif // _PERFQUERY_H_