Method GetBufferNeedsResolving

Rendering/OpenGL2/vtkOpenGLRenderWindow.cxx:1294–1301

------------------------------------------------------------------------------ does the current read buffer require resolving for reading pixels

//------------------------------------------------------------------------------
// does the current read buffer require resolving for reading pixels
bool vtkOpenGLRenderWindow::GetBufferNeedsResolving()
{
  if (this->RenderFramebuffer->GetMultiSamples())
  {
    return true;
  }
  return false;
}

//------------------------------------------------------------------------------
int vtkOpenGLRenderWindow::ReadPixels(