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Bug 1016

Summary: Vertical lines on chart when OpenGL rendering is enabled
Product: VCL TeeChart Reporter: Paul <pawel.kaluza>
Component: OpenGL 3DAssignee: Steema Issue Manager <issuemanager>
Status: CONFIRMED ---    
Severity: normal CC: sandra
Priority: ---    
Version: 140923   
Target Milestone: ---   
Hardware: PC   
OS: Windows   
Chart Series: --- Delphi / C++ Builder RAD IDE Version:
Attachments: print screens

Description Paul 2014-11-19 05:44:31 EST 
Created attachment 351 [details]
print screens

When you enable OpenGL rendering strange vertical lines will appear on TChart. Check enclosed print screens.

Code that reproduces the problem:

var Chart1: TChart;
    TeeOpenGL: TTeeOpenGL;

procedure TForm1.FormCreate(Sender: TObject);
var
  i: Integer;
  series: TLineSeries;
begin
  Chart1:=TChart.Create(Self);
  Chart1.Parent:=Self;
  Chart1.Align:=alClient;
  Chart1.Hover.Visible := False;

  Chart1.View3D:=false;
  Chart1.Legend.Visible:=false;

  TeeOpenGL := TTeeOpenGL.Create(self);
  TeeOpenGL.TeePanel := Chart1;
  TeeOpenGL.Active := True; // <-- comment line to see the difference

  series := TLineSeries.Create(Chart1);
  Chart1.AddSeries(series);
  for i := 0 to 10000 do
  begin
    if i mod 3 = 0 then
      series.AddXY(i,0)
    else
      series.AddXY(i,10);
  end;
end;