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#include "UnityPrefix.h"
#if ENABLE_PROFILER && GFX_SUPPORTS_OPENGLES30
#include "TimerQueryGLES30.h"
#include "AssertGLES30.h"
#include "UnityGLES30Ext.h"
#include "Runtime/Shaders/GraphicsCaps.h"
bool TimerQueriesGLES30::Init()
{
Assert(!gGraphicsCaps.hasTimerQuery || QueryExtension("GL_NV_timer_query"));
if (gGraphicsCaps.hasTimerQuery)
GLES_CHK(glGenQueries(kQueriesCount, timestamp_gl));
nextIndex = 0;
return true;
}
void TimerQueriesGLES30::BeginTimerQueries()
{
GLES_CHK(glFlush());
SetTimestamp();
}
void TimerQueriesGLES30::EndTimerQueries()
{
GLES_CHK(glFlush());
}
unsigned TimerQueriesGLES30::SetTimestamp()
{
// \todo [2013-04-17 pyry] glQueryCounter is not in ES3
#if 0
GLES_CHK(gGles3ExtFunc.glQueryCounterNV(timestamp_gl[nextIndex], GL_TIMESTAMP_NV));
#endif
unsigned ret = nextIndex;
++nextIndex;
if(nextIndex == kQueriesCount)
nextIndex = 0;
return ret;
}
UInt64 TimerQueriesGLES30::GetElapsedTime(unsigned idx, bool wait)
{
GLuint available = 0;
GLES_CHK(glGetQueryObjectuiv(timestamp_gl[idx], GL_QUERY_RESULT_AVAILABLE, &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(glGetQueryObjectuiv(timestamp_gl[idx], GL_QUERY_RESULT_AVAILABLE, &available));
}
}
if(available)
{
unsigned prev_idx = idx > 0 ? idx-1 : kQueriesCount-1;
// \todo [2013-04-17 pyry] i64 variant?
GLuint time1, time2;
GLES_CHK(glGetQueryObjectuiv(timestamp_gl[prev_idx], GL_QUERY_RESULT, &time1));
GLES_CHK(glGetQueryObjectuiv(timestamp_gl[idx], GL_QUERY_RESULT, &time2));
return time2-time1;
}
return kInvalidProfileTime;
}
TimerQueryGLES30::TimerQueryGLES30()
: m_Index(0),
m_Time(kInvalidProfileTime)
{
}
void TimerQueryGLES30::Measure()
{
m_Index = g_TimerQueriesGLES30.SetTimestamp();
m_Time = kInvalidProfileTime;
}
ProfileTimeFormat TimerQueryGLES30::GetElapsed(UInt32 flags)
{
if(m_Time == kInvalidProfileTime)
m_Time = g_TimerQueriesGLES30.GetElapsedTime(m_Index, (flags & kWaitRenderThread) != 0);
return m_Time;
}
TimerQueriesGLES30 g_TimerQueriesGLES30;
#endif
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