Fix OGL perf queries and make them not slow!

Source/Plugins/Plugin_VideoOGL/Src/PerfQuery.cpp

@@ -1,31 +1,47 @@
 #include "GLUtil.h"
 #include "PerfQuery.h"
 
-namespace OGL {
-
-u32 results[PQG_NUM_MEMBERS] = { 0 };
-GLuint query_id;
-
-PerfQueryGroup active_query;
+namespace OGL
+{
 
 PerfQuery::PerfQuery()
+	: m_query_read_pos()
+	, m_query_count()
 {
-	glGenQueries(1, &query_id);
+	for (int i = 0; i != ARRAYSIZE(m_query_buffer); ++i)
+		glGenQueries(1, &m_query_buffer[i].query_id);
+	
+	ResetQuery();
 }
 
 PerfQuery::~PerfQuery()
 {
-	glDeleteQueries(1, &query_id);
+	for (int i = 0; i != ARRAYSIZE(m_query_buffer); ++i)
+		glDeleteQueries(1, &m_query_buffer[i].query_id);
 }
 
 void PerfQuery::EnableQuery(PerfQueryGroup type)
 {
+	// Is this sane?
+	if (m_query_count > ARRAYSIZE(m_query_buffer) / 2)
+		WeakFlush();
+	
+	if (ARRAYSIZE(m_query_buffer) == m_query_count)
+	{
+		FlushOne();
+		//ERROR_LOG(VIDEO, "flushed query buffer early!");
+	}
+	
 	// start query
 	if (type == PQG_ZCOMP_ZCOMPLOC || type == PQG_ZCOMP)
 	{
-		glBeginQuery(GL_SAMPLES_PASSED, query_id);
+		auto& entry = m_query_buffer[(m_query_read_pos + m_query_count) % ARRAYSIZE(m_query_buffer)];
+		
+		glBeginQuery(GL_SAMPLES_PASSED, entry.query_id);
+		entry.query_type = type;
+		
+		++m_query_count;
 	}
-	active_query = type;
 }
 
 void PerfQuery::DisableQuery(PerfQueryGroup type)
@@ -34,45 +50,82 @@ void PerfQuery::DisableQuery(PerfQueryGroup type)
 	if (type == PQG_ZCOMP_ZCOMPLOC || type == PQG_ZCOMP)
 	{
 		glEndQuery(GL_SAMPLES_PASSED);
+	}
+}
 
-		GLuint query_result = GL_FALSE;
-		while (query_result != GL_TRUE)
+bool PerfQuery::IsFlushed() const
+{
+	return 0 == m_query_count;
+}
+
+void PerfQuery::FlushOne()
+{
+	auto& entry = m_query_buffer[m_query_read_pos];
+	
+	GLuint result = 0;
+	glGetQueryObjectuiv(entry.query_id, GL_QUERY_RESULT, &result);
+	
+	m_results[entry.query_type] += result;
+	
+	m_query_read_pos = (m_query_read_pos + 1) % ARRAYSIZE(m_query_buffer);
+	--m_query_count;
+}
+
+// TODO: could selectively flush things, but I don't think that will do much
+void PerfQuery::FlushResults()
+{
+	while (!IsFlushed())
+		FlushOne();
+}
+
+void PerfQuery::WeakFlush()
+{
+	while (!IsFlushed())
+	{
+		auto& entry = m_query_buffer[m_query_read_pos];
+		
+		GLuint result = GL_FALSE;
+		glGetQueryObjectuiv(entry.query_id, GL_QUERY_RESULT_AVAILABLE, &result);
+		
+		if (GL_TRUE == result)
 		{
-			glGetQueryObjectuiv(query_id, GL_QUERY_RESULT_AVAILABLE, &query_result);
+			FlushOne();
+		}
+		else
+		{
+			break;
 		}
-
-		glGetQueryObjectuiv(query_id, GL_QUERY_RESULT, &query_result);
-
-		results[active_query] += query_result;
 	}
 }
 
 void PerfQuery::ResetQuery()
 {
-	memset(results, 0, sizeof(results));
+	m_query_count = 0;
+	std::fill_n(m_results, ARRAYSIZE(m_results), 0);
 }
 
 u32 PerfQuery::GetQueryResult(PerfQueryType type)
 {
-	if (type == PQ_ZCOMP_INPUT_ZCOMPLOC || type == PQ_ZCOMP_OUTPUT_ZCOMPLOC || type == PQ_BLEND_INPUT)
+	u32 result = 0;
+	
+	if (type == PQ_ZCOMP_INPUT_ZCOMPLOC || type == PQ_ZCOMP_OUTPUT_ZCOMPLOC)
 	{
-
+		result = m_results[PQG_ZCOMP_ZCOMPLOC];
 	}
-	if (type == PQ_ZCOMP_INPUT || type == PQ_ZCOMP_OUTPUT || type == PQ_BLEND_INPUT)
+	else if (type == PQ_ZCOMP_INPUT || type == PQ_ZCOMP_OUTPUT)
 	{
-
+		result = m_results[PQG_ZCOMP];
 	}
-	if (type == PQ_BLEND_INPUT)
+	else if (type == PQ_BLEND_INPUT)
 	{
-		results[PQ_BLEND_INPUT] = results[PQ_ZCOMP_OUTPUT] + results[PQ_ZCOMP_OUTPUT_ZCOMPLOC];
+		result = m_results[PQG_ZCOMP] + m_results[PQG_ZCOMP_ZCOMPLOC];
 	}
-
-	if (type == PQ_EFB_COPY_CLOCKS)
+	else if (type == PQ_EFB_COPY_CLOCKS)
 	{
-		// TODO
+		result = m_results[PQG_EFB_COPY_CLOCKS];
 	}
-
-	return results[type];
+	
+	return result / 4;
 }
 
 } // namespace

Source/Plugins/Plugin_VideoOGL/Src/PerfQuery.h

@@ -15,6 +15,30 @@ public:
 	void DisableQuery(PerfQueryGroup type);
 	void ResetQuery();
 	u32 GetQueryResult(PerfQueryType type);
+	void FlushResults();
+	bool IsFlushed() const;
+	
+private:
+	struct ActiveQuery
+	{
+		GLuint query_id;
+		PerfQueryGroup query_type;
+	};
+	
+	// when testing in SMS: 64 was too small, 128 was ok
+	static const int PERF_QUERY_BUFFER_SIZE = 512;
+	
+	void WeakFlush();
+	// Only use when non-empty
+	void FlushOne();
+	
+	// This contains gl query objects with unretrieved results.
+	ActiveQuery m_query_buffer[PERF_QUERY_BUFFER_SIZE];
+	int m_query_read_pos;
+	
+	// TODO: sloppy
+	volatile int m_query_count;
+	volatile u32 m_results[PQG_NUM_MEMBERS];
 };
 
 } // namespace

Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp

@@ -211,7 +211,7 @@ void VertexManager::vFlush()
 	g_perf_query->EnableQuery(bpmem.zcontrol.zcomploc ? PQG_ZCOMP_ZCOMPLOC : PQG_ZCOMP);
 	Draw();
 	g_perf_query->DisableQuery(bpmem.zcontrol.zcomploc ? PQG_ZCOMP_ZCOMPLOC : PQG_ZCOMP);
-	ERROR_LOG(VIDEO, "PerfQuery result: %d", g_perf_query->GetQueryResult(bpmem.zcontrol.zcomploc ? PQ_ZCOMP_OUTPUT_ZCOMPLOC : PQ_ZCOMP_OUTPUT));
+	//ERROR_LOG(VIDEO, "PerfQuery result: %d", g_perf_query->GetQueryResult(bpmem.zcontrol.zcomploc ? PQ_ZCOMP_OUTPUT_ZCOMPLOC : PQ_ZCOMP_OUTPUT));
 
 	// run through vertex groups again to set alpha
 	if (useDstAlpha && !dualSourcePossible)

Source/Plugins/Plugin_VideoSoftware/Src/SWmain.cpp

@@ -176,6 +176,12 @@ u32 VideoSoftware::Video_AccessEFB(EFBAccessType type, u32 x, u32 y, u32 InputDa
     return value;
 }
 
+u32 VideoSoftware::Video_GetQueryResult(PerfQueryType type)
+{
+	// TODO:
+	return 0;
+}
+
 bool VideoSoftware::Video_Screenshot(const char *_szFilename)
 {
 	return false;

Source/Plugins/Plugin_VideoSoftware/Src/VideoBackend.h

@@ -26,7 +26,9 @@ class VideoSoftware : public VideoBackend
 	void Video_ExitLoop();
 	void Video_BeginField(u32, FieldType, u32, u32);
 	void Video_EndField();
+	
 	u32 Video_AccessEFB(EFBAccessType, u32, u32, u32);
+	u32 Video_GetQueryResult(PerfQueryType type);
 
 	void Video_AddMessage(const char* pstr, unsigned int milliseconds);
 	void Video_ClearMessages();