Failed in CreateDIBSection, OpenGL application error (bmp{0},pix{1},gle{2}) single buffer is not available, double buffer will be slower. double buffer visual not available Error identifying visual of OpenGL glren: Unable to create an off-screen rendering context OpenGL requires a true color visual for reliable display Problems in UIW_SetUpGLPrinting Cannot create an OpenGL visual for printing Server has no GLX Extension Failed in SetStretchBltMode, OpenGL application error (gle{0}) single buffer visual not available Failed in StretchDIBits, OpenGL application error (gle{0})