From b8647f968a6ae9454e7d24df1702126f5d862ddf Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <wolf.pld@gmail.com>
Date: Sun, 12 Apr 2020 23:41:18 +0200
Subject: [PATCH] Don't animate threads on first frame.

---
 server/TracyView.cpp | 19 ++++++++++++++-----
 server/TracyView.hpp |  3 +++
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/server/TracyView.cpp b/server/TracyView.cpp
index 1a5e7e57..659a3c8c 100644
--- a/server/TracyView.cpp
+++ b/server/TracyView.cpp
@@ -701,6 +701,7 @@ bool View::DrawImpl()
     m_lockInfoAnim.Update( io.DeltaTime );
     m_statBuzzAnim.Update( io.DeltaTime );
 
+    if( m_firstFrame ) m_firstFrame = false;
     return keepOpen;
 }
 
@@ -2069,7 +2070,7 @@ static float AdjustThreadPosition( View::VisData& vis, float wy, int& offset )
     return offset + wy;
 }
 
-static void AdjustThreadHeight( View::VisData& vis, int oldOffset, int& offset )
+void View::AdjustThreadHeight( View::VisData& vis, int oldOffset, int& offset )
 {
     const auto h = offset - oldOffset;
     if( vis.height > h )
@@ -2079,10 +2080,18 @@ static void AdjustThreadHeight( View::VisData& vis, int oldOffset, int& offset )
     }
     else if( vis.height < h )
     {
-        const auto diff = h - vis.height;
-        const auto move = std::max( 2.0, diff * 10.0 * ImGui::GetIO().DeltaTime );
-        vis.height = int( std::min<double>( vis.height + move, h ) );
-        offset = oldOffset + vis.height;
+        if( m_firstFrame )
+        {
+            vis.height = h;
+            offset = oldOffset + h;
+        }
+        else
+        {
+            const auto diff = h - vis.height;
+            const auto move = std::max( 2.0, diff * 10.0 * ImGui::GetIO().DeltaTime );
+            vis.height = int( std::min<double>( vis.height + move, h ) );
+            offset = oldOffset + vis.height;
+        }
     }
 }
 
diff --git a/server/TracyView.hpp b/server/TracyView.hpp
index 50e8072b..44b66b5f 100644
--- a/server/TracyView.hpp
+++ b/server/TracyView.hpp
@@ -288,6 +288,8 @@ private:
         return it->second;
     }
 
+    void AdjustThreadHeight( View::VisData& vis, int oldOffset, int& offset );
+
     Worker m_worker;
     std::string m_filename;
     bool m_staticView;
@@ -419,6 +421,7 @@ private:
     UserData m_userData;
 
     bool m_reconnectRequested = false;
+    bool m_firstFrame = true;
 
     struct FindZone {
         enum : uint64_t { Unselected = std::numeric_limits<uint64_t>::max() - 1 };