1 files changed, 109 insertions, 0 deletions
diff --git a/Runtime/GfxDevice/opengles20/TimerQueryGLES20.cpp b/Runtime/GfxDevice/opengles20/TimerQueryGLES20.cpp
new file mode 100644
index 0000000..1a5887e
--- /dev/null
+++ b/Runtime/GfxDevice/opengles20/TimerQueryGLES20.cpp
@@ -0,0 +1,109 @@
+#include "UnityPrefix.h"
+#if ENABLE_PROFILER && GFX_SUPPORTS_OPENGLES20
+#include "TimerQueryGLES20.h"
+#include "AssertGLES20.h"
+#include "UnityGLES20Ext.h"
+#include "Runtime/Shaders/GraphicsCaps.h"
+
+bool TimerQueriesGLES::Init()
+{
+	bool hasHWSupport = false;
+	if( QueryExtension("GL_NV_timer_query") )
+	{
+		hasHWSupport = gGlesExtFunc.glGetQueryObjectuivEXT && gGlesExtFunc.glGenQueriesEXT;
+
+	#if UNITY_ANDROID
+		hasHWSupport = hasHWSupport && gGlesExtFunc.glQueryCounterNV && gGlesExtFunc.glGetQueryObjectui64vNV;
+	#endif
+	}
+
+	gGraphicsCaps.hasTimerQuery = hasHWSupport;
+	if(hasHWSupport)
+		GLES_CHK(gGlesExtFunc.glGenQueriesEXT(kQueriesCount, timestamp_gl));
+
+	nextIndex = 0;
+	return true;
+}
+
+void TimerQueriesGLES::BeginTimerQueries()
+{
+	GLES_CHK(glFlush());
+	SetTimestamp();
+}
+
+void TimerQueriesGLES::EndTimerQueries()
+{
+	GLES_CHK(glFlush());
+}
+
+unsigned TimerQueriesGLES::SetTimestamp()
+{
+#if UNITY_ANDROID
+	GLES_CHK(gGlesExtFunc.glQueryCounterNV(timestamp_gl[nextIndex], GL_TIMESTAMP_NV));
+#endif
+	unsigned ret = nextIndex;
+
+	++nextIndex;
+	if(nextIndex == kQueriesCount)
+		nextIndex = 0;
+
+	return ret;
+}
+
+UInt64 TimerQueriesGLES::GetElapsedTime(unsigned idx, bool wait)
+{
+#if UNITY_ANDROID
+	GLuint available = 0;
+	GLES_CHK(gGlesExtFunc.glGetQueryObjectuivEXT(timestamp_gl[idx], GL_QUERY_RESULT_AVAILABLE_EXT, &available));
+	// sometimes timestamp might be not ready (we still dont know why)
+	// the only workaround would be to add glFlush into SetTimestamp
+	// but then some timings will be a bit off
+	if(wait)
+	{
+		for(unsigned i = 0 ; i < 100 && !available ; ++i)
+		{
+			GLES_CHK(gGlesExtFunc.glGetQueryObjectuivEXT(timestamp_gl[idx], GL_QUERY_RESULT_AVAILABLE_EXT, &available));
+		}
+	}
+
+	if(available)
+	{
+		unsigned prev_idx = idx > 0 ? idx-1 : kQueriesCount-1;
+
+		EGLuint64NV time1, time2;
+		GLES_CHK(gGlesExtFunc.glGetQueryObjectui64vNV(timestamp_gl[prev_idx], GL_QUERY_RESULT_EXT, &time1));
+		GLES_CHK(gGlesExtFunc.glGetQueryObjectui64vNV(timestamp_gl[idx], GL_QUERY_RESULT_EXT, &time2));
+
+		return time2-time1;
+	}
+#endif
+
+	return kInvalidProfileTime;
+
+}
+
+
+TimerQueryGLES::TimerQueryGLES()
+  : m_Index(0),
+  	m_Time(kInvalidProfileTime)
+{
+}
+
+void TimerQueryGLES::Measure()
+{
+	m_Index = g_TimerQueriesGLES.SetTimestamp();
+	m_Time  = kInvalidProfileTime;
+}
+
+ProfileTimeFormat TimerQueryGLES::GetElapsed(UInt32 flags)
+{
+	if(m_Time == kInvalidProfileTime)
+		m_Time = g_TimerQueriesGLES.GetElapsedTime(m_Index, (flags & kWaitRenderThread) != 0);
+
+	return m_Time;
+}
+
+TimerQueriesGLES g_TimerQueriesGLES;
+
+
+#endif