G4OpenGLImmediateXViewer.cc

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// Andrew Walkden  7th February 1997
// Class G4OpenGLImmediateXViewer : a class derived from G4OpenGLXViewer and
//                                G4OpenGLImmediateViewer.
 
#include "G4OpenGLImmediateXViewer.hh"
#include "G4OpenGLImmediateSceneHandler.hh"
 
#include "G4ios.hh"
#include "G4Threading.hh"
 
G4OpenGLImmediateXViewer::
G4OpenGLImmediateXViewer (G4OpenGLImmediateSceneHandler& sceneHandler,
              const G4String&  name)
 : G4VViewer (sceneHandler, sceneHandler.IncrementViewCount (), name),
   G4OpenGLViewer (sceneHandler),
   G4OpenGLXViewer (sceneHandler),
   G4OpenGLImmediateViewer (sceneHandler)
{
  if (fViewId < 0) return;  // In case error in base class instantiation.
 
// ensure a suitable window was found
  if (!vi_immediate) {
    G4cerr << "G4OpenGLImmediateXViewer::G4OpenGLImmediateXViewer -"
      " G4OpenGLXViewer couldn't get a visual." << G4endl;  
    fViewId = -1;  // This flags an error.
    return;
  }
}
 
G4OpenGLImmediateXViewer::~G4OpenGLImmediateXViewer () {}
 
void G4OpenGLImmediateXViewer::Initialise () {
 
  CreateGLXContext (vi_immediate);
  CreateMainWindow ();
  CreateFontLists ();
 
  InitializeGLView ();
 
  // If a double buffer context has been forced upon us, ignore the
  // back buffer for this OpenGLImmediate view.
  glDrawBuffer (GL_FRONT);
 
  glDepthFunc (GL_LEQUAL);
  glDepthMask (GL_TRUE);
}
 
void G4OpenGLImmediateXViewer::DrawView () {
 
  G4ViewParameters::DrawingStyle style = GetViewParameters().GetDrawingStyle();
 
  if(style!=G4ViewParameters::hlr &&
     haloing_enabled) {
 
    HaloingFirstPass ();
    NeedKernelVisit ();
    ProcessView ();
    glFlush ();
 
    HaloingSecondPass ();
 
  }
 
  NeedKernelVisit ();  // Always need to visit G4 kernel.
  ProcessView ();
  FinishView ();
 
}
 
void G4OpenGLImmediateXViewer::FinishView () {
//  glXWaitGL (); //Wait for effects of all previous OpenGL commands to
                //be propagated before progressing.
// JA: Commented out July 2021 - slows rendering down in some cases and I
// don't see any adverse effects.
  glFlush ();
}