(* "Earth" The atmospheric effect is rendered in GLDirectOpenGL1Render, which essentially renders a disk, with color of the vertices computed via ray-tracing. Not that the tesselation of the disk has been hand-optimized so as to reduce CPU use while retaining quality. Stars support is built into the TGLSkyDome, but constellations are rendered via a TGLLines, which is filled in the LoadConstellationLines method. *) program EarthD; uses Forms, fdEarth in 'fdEarth.pas' {FormEarth}; {$R *.res} begin Application.Initialize; Application.CreateForm(TFormEarth, FormEarth); Application.Run; end.