mirror/tracy
1
0
Fork 0
mirror of https://github.com/wolfpld/tracy.git synced 2024-11-10 10:41:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

Magic vectors in automatic GPU drift detection.

Browse Source
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
server/TracyView.cpp
View File

@ -7039,6 +7039,20 @@ void View::DrawOptions()
#endif
{
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-- )
{
if( timeline[j]->GpuEnd() >= 0 )
@ -7047,6 +7061,7 @@ void View::DrawOptions()
break;
}
}
}
enum { NumSlopes = 10000 };
std::random_device rd;
@ -7054,6 +7069,22 @@ void View::DrawOptions()
std::uniform_int_distribution<size_t> dist( 0, lastidx - 1 );
float slopes[NumSlopes];
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
{
const auto p0 = dist( gen );
@ -7064,6 +7095,7 @@ void View::DrawOptions()
}
}
while( idx < NumSlopes );
}
std::sort( slopes, slopes+NumSlopes );
drift = int( 1000000000 * -slopes[NumSlopes/2] );
}