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#include "UnityPrefix.h"
#if ENABLE_PROFILER
#include "UnityGL.h"
#include "TimerQueryGL.h"
#include "Runtime/Shaders/GraphicsCaps.h"
TimerQueryGL::TimerQueryGL()
{
m_Query = g_TimerQueriesGL.AllocateQuery();
}
TimerQueryGL::~TimerQueryGL()
{
g_TimerQueriesGL.ReleaseQuery(m_Query);
}
void TimerQueryGL::Measure()
{
// Finish previous timer query
OGL_CALL(glEndQueryARB(GL_TIME_ELAPSED_EXT));
MeasureBegin();
}
void TimerQueryGL::MeasureBegin()
{
// Flush previous result
GetElapsed(kWaitRenderThread);
OGL_CALL(glBeginQueryARB(GL_TIME_ELAPSED_EXT, m_Query));
g_TimerQueriesGL.AddActiveTimerQuery(this);
m_Time = kInvalidProfileTime;
}
ProfileTimeFormat TimerQueryGL::GetElapsed(UInt32 flags)
{
bool wait = (flags & kWaitRenderThread) != 0;
// We need to return a valid time if waiting
if (wait && m_Time == kInvalidProfileTime)
m_Time = 0;
while (IsInList())
{
if (!g_TimerQueriesGL.PollNextTimerQuery(wait))
break;
}
return m_Time;
}
bool TimerQueryGL::PollResult(UInt64& prevTime, bool wait)
{
for (;;)
{
// Currently we always wait on result
//GLint available = 0;
//OGL_CALL(glGetQueryObjectivARB(m_Query, GL_QUERY_RESULT_AVAILABLE, &available));
//if (available)
{
GLuint64EXT time;
OGL_CALL(glGetQueryObjectui64vEXT(m_Query, GL_QUERY_RESULT, &time));
// Some Nvidia cards return invalid results, sanity check!
if (time > GLuint64EXT(0xffffffff))
gGraphicsCaps.buggyTimerQuery = true;
// We actually want previous query's time elapsed
// Save current returned result for next query
m_Time = prevTime;
prevTime = time;
return true;
}
if (!wait)
break;
}
return false;
}
TimerQueriesGL::TimerQueriesGL()
{
memset(m_FreeQueries, 0, sizeof(m_FreeQueries));
m_NumFreeQueries = 0;
m_LastQueryTime = 0;
memset(m_StartTimeQueries, 0, sizeof(m_StartTimeQueries));
m_StartTimeQueryIndex = 0;
m_Active = false;
}
GLuint TimerQueriesGL::AllocateQuery()
{
if (m_NumFreeQueries == 0)
{
OGL_CALL(glGenQueriesARB(kMaxFreeQueries, m_FreeQueries));
m_NumFreeQueries = kMaxFreeQueries;
}
return m_FreeQueries[--m_NumFreeQueries];
}
void TimerQueriesGL::ReleaseQuery(GLuint query)
{
if (m_NumFreeQueries == kMaxFreeQueries)
{
OGL_CALL(glDeleteQueriesARB(kMaxFreeQueries, m_FreeQueries));
m_NumFreeQueries = 0;
}
m_FreeQueries[m_NumFreeQueries++] = query;
}
void TimerQueriesGL::AddActiveTimerQuery(TimerQueryGL* query)
{
m_ActiveTimerQueries.push_back(*query);
}
void TimerQueriesGL::BeginTimerQueries()
{
Assert(!m_Active);
int& index = m_StartTimeQueryIndex;
if(m_StartTimeQueries[index] == NULL)
{
m_StartTimeQueries[index] = new TimerQueryGL;
}
m_StartTimeQueries[index]->MeasureBegin();
index = (index + 1) % kStartTimeQueryCount;
m_Active = true;
}
void TimerQueriesGL::EndTimerQueries()
{
Assert(m_Active);
OGL_CALL(glEndQueryARB(GL_TIME_ELAPSED_EXT));
OGL_CALL(glFlush());
// Move queries from active to polled list
m_PolledTimerQueries.append(m_ActiveTimerQueries);
g_TimerQueriesGL.PollTimerQueries(true);
m_Active = false;
}
void TimerQueriesGL::PollTimerQueries(bool wait)
{
for (;;)
{
if (!PollNextTimerQuery(wait))
break;
}
}
bool TimerQueriesGL::PollNextTimerQuery(bool wait)
{
if (m_PolledTimerQueries.empty())
return false;
TimerQueryGL& query = m_PolledTimerQueries.front();
if (query.PollResult(m_LastQueryTime, wait))
{
m_PolledTimerQueries.pop_front();
return true;
}
return false;
}
TimerQueriesGL g_TimerQueriesGL;
#endif
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