int __fastcall ImageRenderPrepare(int *p_n26, int a2)
{
  unsigned int *p_count; // edi
  int i; // esi

  if ( ImageRenderDecode(p_n26, a2) < 0 )
    return 0;
  p_count = ImageRenderAllocContext();
  if ( !p_count )
    return 0;
  for ( i = p_n26[2]; i; i = *(_DWORD *)(i + 16) )
  {
    if ( ImageRenderSetPixel(p_count, *(unsigned int **)(i + 12)) < 0 )
      return 0;
  }
  if ( ImageRenderToOutput(p_count, p_n26, a2) >= 0 )
    return BitUnpack((int *)p_count);
  else
    return 0;
}