From 5aeeefefbd041d3e3bee84317de4db99d1890ad8 Mon Sep 17 00:00:00 2001
From: Bartosz Taudul <bartosz.taudul@game-lion.com>
Date: Tue, 15 Oct 2019 16:55:15 +0200
Subject: [PATCH] Draw CPU usage graph.

---
 server/TracyView.cpp | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/server/TracyView.cpp b/server/TracyView.cpp
index 4350968b..5d939b60 100644
--- a/server/TracyView.cpp
+++ b/server/TracyView.cpp
@@ -4404,9 +4404,40 @@ int View::DrawCpuData( int offset, double pxns, const ImVec2& wpos, bool hover,
         const auto sty = ImGui::GetFontSize();
         const auto sstep = sty + 1;
 
-        const auto origOffset = offset;
         auto cpuData = m_worker.GetCpuData();
         const auto cpuCnt = m_worker.GetCpuDataCpuCount();
+        assert( cpuCnt != 0 );
+
+        const auto cpuUsageHeight = 40 * ImGui::GetTextLineHeight() / 15.f;
+        if( wpos.y + offset + cpuUsageHeight + 2 >= yMin && wpos.y + offset <= yMax )
+        {
+            const float cpuCntRev = 1.f / cpuCnt;
+            float pos = 0;
+            int usageOwn, usageOther;
+            while( pos < w )
+            {
+                m_worker.GetCpuUsageAtTime( m_vd.zvStart + pos * nspx, usageOwn, usageOther );
+                float base;
+                if( usageOwn != 0 )
+                {
+                    base = wpos.y + offset + ( 1.f - usageOwn * cpuCntRev ) * cpuUsageHeight;
+                    draw->AddLine( ImVec2( wpos.x + pos, wpos.y + offset + cpuUsageHeight ), ImVec2( wpos.x + pos, base ), 0xFF55BB55 );
+                }
+                else
+                {
+                    base = wpos.y + offset + cpuUsageHeight;
+                }
+                if( usageOther != 0 )
+                {
+                    int usageTotal = usageOwn + usageOther;
+                    draw->AddLine( ImVec2( wpos.x + pos, base ), ImVec2( wpos.x + pos, wpos.y + offset + ( 1.f - usageTotal * cpuCntRev ) * cpuUsageHeight ), 0xFF666666 );
+                }
+                pos++;
+            }
+        }
+        offset += cpuUsageHeight + 2;
+
+        const auto origOffset = offset;
         for( int i=0; i<cpuCnt; i++ )
         {
             if( !cpuData[i].cs.empty() )