Method ReleaseGraphicsResources

Rendering/OpenGL2/vtkTextureObject.cxx:407–445

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void vtkTextureObject::ReleaseGraphicsResources(vtkWindow* win)
{
  if (!this->ResourceCallback->IsReleasing())
  {
    this->ResourceCallback->Release();
    return;
  }

  // Ensure that the context is current before releasing any graphics
  // resources tied to it.
  if (this->Handle)
  {
    vtkOpenGLRenderWindow* rwin = vtkOpenGLRenderWindow::SafeDownCast(win);
    // you can commewnt out the next line to look for textures left active
    rwin->DeactivateTexture(this);
    if (this->OwnHandle)
    {
      GLuint tex = this->Handle;
      glDeleteTextures(1, &tex);
      this->OwnHandle = false;
    }
    this->Handle = 0;
    this->NumberOfDimensions = 0;
    this->Target = 0;
    this->InternalFormat = 0;
    this->Format = 0;
    this->Type = 0;
    this->Components = 0;
    this->Width = this->Height = this->Depth = 0;
    this->Modified();
  }
  if (this->ShaderProgram)
  {
    this->ShaderProgram->ReleaseGraphicsResources(win);
    delete this->ShaderProgram;
    this->ShaderProgram = nullptr;
    this->Modified();
  }
}

//------------------------------------------------------------------------------
void vtkTextureObject::Bind()