Method SetRGBACharPixelData

Rendering/OpenGL2/vtkOpenGLRenderWindow.cxx:2414–2455

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//------------------------------------------------------------------------------
int vtkOpenGLRenderWindow::SetRGBACharPixelData(
  int x1, int y1, int x2, int y2, vtkUnsignedCharArray* data, int front, int blend, int right)
{
  int y_low, y_hi;
  int x_low, x_hi;
  int width, height;

  if (y1 < y2)
  {
    y_low = y1;
    y_hi = y2;
  }
  else
  {
    y_low = y2;
    y_hi = y1;
  }

  if (x1 < x2)
  {
    x_low = x1;
    x_hi = x2;
  }
  else
  {
    x_low = x2;
    x_hi = x1;
  }

  width = abs(x_hi - x_low) + 1;
  height = abs(y_hi - y_low) + 1;

  int size = 4 * width * height;
  if (data->GetMaxId() + 1 != size)
  {
    vtkErrorMacro(
      "Buffer is of wrong size. It is " << data->GetMaxId() + 1 << ", it should be: " << size);
    return VTK_ERROR;
  }

  return this->SetRGBACharPixelData(x1, y1, x2, y2, data->GetPointer(0), front, blend, right);
}

//------------------------------------------------------------------------------
int vtkOpenGLRenderWindow::SetRGBACharPixelData(