Method PushToViewport

Rendering/Parallel/vtkSynchronizedRenderers.cxx:720–745

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//------------------------------------------------------------------------------
bool vtkSynchronizedRenderers::vtkRawImage::PushToViewport(vtkRenderer* ren, bool blend)
{
  if (!this->IsValid())
  {
    vtkGenericWarningMacro("Image not valid. Cannot push to screen.");
    return false;
  }

  int size[2], low_point[2];
  ren->GetTiledSizeAndOrigin(&size[0], &size[1], &low_point[0], &low_point[1]);
  vtkLogF(TRACE, "GetTiledSizeAndOrigin(w=%d, h=%d, x=%d, y=%d)", size[0], size[1], low_point[0],
    low_point[1]);
  if (size[0] <= 0 || size[1] <= 0)
  {
    vtkGenericWarningMacro("Viewport empty. Cannot push to screen.");
    return false;
  }

  vtkOpenGLState* ostate = static_cast<vtkOpenGLRenderWindow*>(ren->GetVTKWindow())->GetState();
  ostate->vtkglEnable(GL_SCISSOR_TEST);
  ostate->vtkglViewport(low_point[0], low_point[1], size[0], size[1]);
  ostate->vtkglScissor(low_point[0], low_point[1], size[0], size[1]);

  ren->Clear();
  return this->PushToFrameBuffer(ren, blend);
}

//------------------------------------------------------------------------------
bool vtkSynchronizedRenderers::vtkRawImage::PushToFrameBuffer(vtkRenderer* ren, bool blend)