Make GPU zones colored according to their thread

There was an issue that the GPU zones were always purple. This patch
changes the the color of GPU zones to match the CPU thread making the
GPU calls.

Author: Eric Eaton

profiler/src/profiler/TracyView_GpuTimeline.cpp

@@ -159,9 +159,10 @@ int View::DrawGpuZoneLevel( const V& vec, bool hover, double pxns, int64_t nspx,
         const auto start = AdjustGpuTime( ev.GpuStart(), begin, drift );
         end = AdjustGpuTime( end, begin, drift );
         const auto zsz = std::max( ( end - start ) * pxns, pxns * 0.5 );
+        const auto zoneThread = thread != 0 ? thread : m_worker.DecompressThread( ev.Thread() );
         if( zsz < MinVisSize )
         {
-            const auto color = GetZoneColor( { &ev.event, ctx }, thread, depth );
+            const auto color = GetZoneColor( { &ev.event, ctx }, zoneThread, depth );
             const auto MinVisNs = MinVisSize * nspx;
             int num = 0;
             const auto px0 = ( start - m_vd.zvStart ) * pxns;
@@ -202,7 +203,6 @@ int View::DrawGpuZoneLevel( const V& vec, bool hover, double pxns, int64_t nspx,
                 }
                 else
                 {
-                    const auto zoneThread = thread != 0 ? thread : m_worker.DecompressThread( ev.Thread() );
                     ZoneTooltipGPU( { &ev.event, ctx } );
 
                     if( IsMouseClicked( 2 ) && rend - start > 0 )
@@ -242,7 +242,7 @@ int View::DrawGpuZoneLevel( const V& vec, bool hover, double pxns, int64_t nspx,
             const auto pr1 = ( end - m_vd.zvStart ) * pxns;
             const auto px0 = std::max( pr0, -10.0 );
             const auto px1 = std::max( { std::min( pr1, double( w + 10 ) ), px0 + pxns * 0.5, px0 + MinVisSize } );
-            const auto zoneColor = GetZoneColorData( { &ev.event, ctx }, thread, depth, 0 );
+            const auto zoneColor = GetZoneColorData( { &ev.event, ctx }, zoneThread, depth, 0 );
             draw->AddRectFilled( wpos + ImVec2( px0, offset ), wpos + ImVec2( px1, offset + tsz.y ), zoneColor.color );
             if( zoneColor.highlight )
             {
@@ -288,7 +288,6 @@ int View::DrawGpuZoneLevel( const V& vec, bool hover, double pxns, int64_t nspx,
 
             if( hover && ImGui::IsMouseHoveringRect( wpos + ImVec2( px0, offset ), wpos + ImVec2( px1, offset + tsz.y + 1 ) ) )
             {
-                const auto zoneThread = thread != 0 ? thread : m_worker.DecompressThread( ev.thread );
                 ZoneTooltipGPU( { &ev.event, ctx } );
 
                 if( !m_zoomAnim.active && IsMouseClicked( 2 ) )