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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenGLDisplayListPainter.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkOpenGLDisplayListPainter.h"
#include "vtkPolyData.h"
#include "vtkInformation.h"
#include "vtkObjectFactory.h"
#include "vtkProperty.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkTimerLog.h"
#include "vtkOpenGL.h"
#include "vtkOpenGLError.h"
#include <map>
vtkStandardNewMacro(vtkOpenGLDisplayListPainter);
class vtkOpenGLDisplayListPainter::vtkInternals
{
public:
typedef std::map<unsigned long, GLuint> DisplayListMapType;
DisplayListMapType DisplayListMap;
// Refers to the build time of the first display list.
vtkTimeStamp BuildTime;
void ReleaseAllLists()
{
vtkOpenGLClearErrorMacro();
DisplayListMapType::iterator iter;
for (iter = this->DisplayListMap.begin(); iter != this->DisplayListMap.end();
iter++)
{
glDeleteLists(iter->second, 1);
}
this->DisplayListMap.clear();
vtkOpenGLStaticCheckErrorMacro("failed after ReleaseAllLists");
}
void ReleaseList(unsigned long key)
{
vtkOpenGLClearErrorMacro();
DisplayListMapType::iterator iter = this->DisplayListMap.find(key);
if (iter != this->DisplayListMap.end())
{
glDeleteLists(iter->second, 1);
this->DisplayListMap.erase(iter);
}
vtkOpenGLStaticCheckErrorMacro("failed after ReleaseList");
}
void UpdateBuildTime()
{
if (this->DisplayListMap.size() == 1)
{
this->BuildTime.Modified();
}
}
};
//-----------------------------------------------------------------------------
vtkOpenGLDisplayListPainter::vtkOpenGLDisplayListPainter()
{
this->Internals = new vtkInternals();
}
//-----------------------------------------------------------------------------
vtkOpenGLDisplayListPainter::~vtkOpenGLDisplayListPainter()
{
if (this->LastWindow)
{
this->ReleaseGraphicsResources(this->LastWindow);
}
delete this->Internals;
this->Internals = 0;
}
//-----------------------------------------------------------------------------
void vtkOpenGLDisplayListPainter::ReleaseGraphicsResources(vtkWindow* win)
{
if (win && win->GetMapped())
{
win->MakeCurrent();
this->Internals->ReleaseAllLists();
}
this->Internals->DisplayListMap.clear();
this->Superclass::ReleaseGraphicsResources(win);
this->LastWindow = NULL;
}
//-----------------------------------------------------------------------------
void vtkOpenGLDisplayListPainter::RenderInternal(vtkRenderer *renderer,
vtkActor *actor,
unsigned long typeflags,
bool forceCompileOnly)
{
vtkOpenGLClearErrorMacro();
// if active render window has changed, then release the old display lists on
// the old window, if the old window is still valid.
if (this->LastWindow &&
(renderer->GetRenderWindow() != this->LastWindow.GetPointer()))
{
this->ReleaseGraphicsResources(this->LastWindow);
renderer->GetRenderWindow()->MakeCurrent();
}
if (this->ImmediateModeRendering)
{
// don't use display lists at all.
if (!forceCompileOnly)
{
this->Superclass::RenderInternal(renderer, actor, typeflags,
forceCompileOnly);
}
return;
}
this->TimeToDraw = 0.0;
vtkDataObject* input = this->GetInput();
// if something has changed regenrate display lists.
// First check for the cases where all display lists (irrespective of
// typeflags are obsolete.
if (
// the painter has changed.
this->GetMTime() > this->Internals->BuildTime ||
// Since input changed
input->GetMTime() > this->Internals->BuildTime ||
// actor's properties were modified
actor->GetProperty()->GetMTime() > this->Internals->BuildTime ||
// mapper information was modified
this->Information->GetMTime() > this->Internals->BuildTime)
{
this->Internals->ReleaseAllLists();
this->LastWindow = 0;
}
vtkInternals::DisplayListMapType::iterator iter =
this->Internals->DisplayListMap.find(typeflags);
if (iter == this->Internals->DisplayListMap.end())
{
GLuint list = glGenLists(1);
glNewList(list, GL_COMPILE);
// generate the display list.
this->Superclass::RenderInternal(renderer, actor, typeflags,
forceCompileOnly);
glEndList();
this->Internals->DisplayListMap[typeflags] = list;
this->Internals->UpdateBuildTime();
this->LastWindow = renderer->GetRenderWindow();
iter = this->Internals->DisplayListMap.find(typeflags);
}
if (!forceCompileOnly)
{
// Time the actual drawing.
this->Timer->StartTimer();
// render the display list.
// if nothing has changed we use an old display list else
// we use the newly generated list.
glCallList(iter->second);
// glFinish(); // To compute time correctly, we need to wait
// till OpenGL finishes.
this->Timer->StopTimer();
this->TimeToDraw += this->Timer->GetElapsedTime();
}
vtkOpenGLCheckErrorMacro("failed after RenderInternal");
}
//-----------------------------------------------------------------------------
void vtkOpenGLDisplayListPainter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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