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Magic vectors in automatic GPU drift detection.

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This commit is contained in:
Bartosz Taudul 2019-11-10 02:27:46 +01:00
parent 1b6c79fa7b
commit 4eb8acc973
1 changed files with 42 additions and 10 deletions
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32
server/TracyView.cpp
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@ -7039,6 +7039,20 @@ void View::DrawOptions()
#endif #endif
{ {
size_t lastidx = 0; size_t lastidx = 0;
if( timeline.is_magic() )
{
auto& tl = *((Vector<GpuEvent>*)&timeline);
for( size_t j=tl.size()-1; j > 0; j-- )
{
if( tl[j].GpuEnd() >= 0 )
{
lastidx = j;
break;
}
}
}
else
{
for( size_t j=timeline.size()-1; j > 0; j-- ) for( size_t j=timeline.size()-1; j > 0; j-- )
{ {
if( timeline[j]->GpuEnd() >= 0 ) if( timeline[j]->GpuEnd() >= 0 )
@ -7047,6 +7061,7 @@ void View::DrawOptions()
break; break;
} }
} }
}
enum { NumSlopes = 10000 }; enum { NumSlopes = 10000 };
std::random_device rd; std::random_device rd;
@ -7054,6 +7069,22 @@ void View::DrawOptions()
std::uniform_int_distribution<size_t> dist( 0, lastidx - 1 ); std::uniform_int_distribution<size_t> dist( 0, lastidx - 1 );
float slopes[NumSlopes]; float slopes[NumSlopes];
size_t idx = 0; size_t idx = 0;
if( timeline.is_magic() )
{
auto& tl = *((Vector<GpuEvent>*)&timeline);
do
{
const auto p0 = dist( gen );
const auto p1 = dist( gen );
if( p0 != p1 )
{
slopes[idx++] = float( 1.0 - double( tl[p1].GpuStart() - tl[p0].GpuStart() ) / double( tl[p1].CpuStart() - tl[p0].CpuStart() ) );
}
}
while( idx < NumSlopes );
}
else
{
do do
{ {
const auto p0 = dist( gen ); const auto p0 = dist( gen );
@ -7064,6 +7095,7 @@ void View::DrawOptions()
} }
} }
while( idx < NumSlopes ); while( idx < NumSlopes );
}
std::sort( slopes, slopes+NumSlopes ); std::sort( slopes, slopes+NumSlopes );
drift = int( 1000000000 * -slopes[NumSlopes/2] ); drift = int( 1000000000 * -slopes[NumSlopes/2] );
} }