int *__cdecl ImageRenderScanline(int a1, int a2, int n0x100, int a4)
{
  int n0x100_1; // ebp
  int n0x100_3; // ebx
  int *Pool_1; // edi
  int *Pool; // eax
  int v8; // eax
  _BYTE *v9; // eax
  int v10; // edx
  int v11; // ecx
  int v12; // ecx
  _BYTE *v13; // eax
  int n0x100_2; // ecx
  bool v15; // sf
  int n0x100_4; // esi
  int v17; // ecx
  unsigned __int8 v18; // al
  int Line; // eax
  char v20; // al
  _BYTE *v21; // esi
  int v22; // eax
  int n0x100_5; // [esp+Ch] [ebp-8h]

  n0x100_1 = n0x100;
  n0x100_3 = 0;
  Pool_1 = 0;
  if ( (unsigned int)n0x100 < 0x100 && a4 >= 0 && a4 < 255 - n0x100 )
  {
    Pool = (int *)PeiAllocatePool((void *)0x30);
    Pool_1 = Pool;
    if ( Pool )
    {
      SetMem(Pool, 0x30u, 0);
      Pool_1[9] = a4;
      *Pool_1 = 8;
      Pool_1[1] = 255;
      v8 = PeiAllocatePool((void *)0x100);
      Pool_1[2] = v8;
      if ( !v8 )
        return 0;
      v9 = (_BYTE *)PeiAllocatePool((void *)(Pool_1[1] + 1));
      Pool_1[3] = (int)v9;
      if ( !v9 )
        return 0;
      v10 = 0;
      *v9 = *((_BYTE *)Pool_1 + 4);
      *(_BYTE *)(Pool_1[1] + Pool_1[2]) = 0;
      v11 = 1;
      if ( Pool_1[1] > 0 )
      {
        do
        {
          *(_BYTE *)(v11 + Pool_1[3]) = v10;
          *(_BYTE *)(v10 + Pool_1[2]) = v11;
          v12 = 2 * v11;
          if ( (v12 & 0x100) != 0 )
            v12 ^= 0x11Du;
          v11 = Pool_1[1] & v12;
          ++v10;
        }
        while ( v10 < Pool_1[1] );
        if ( v11 != 1 )
          return 0;
      }
      v13 = (_BYTE *)PeiAllocatePool((void *)(n0x100 + 1));
      Pool_1[4] = (int)v13;
      if ( v13 )
      {
        Pool_1[6] = 0;
        n0x100_2 = 0;
        Pool_1[7] = 1;
        Pool_1[5] = n0x100;
        Pool_1[10] = 285;
        Pool_1[8] = 1;
        *v13 = 1;
        n0x100_5 = 0;
        v15 = n0x100 < 0;
        if ( n0x100 > 0 )
        {
          do
          {
            n0x100_4 = n0x100_2;
            *(_BYTE *)(Pool_1[4] + n0x100_2 + 1) = 1;
            if ( n0x100_2 > 0 )
            {
              do
              {
                v17 = Pool_1[4];
                v18 = *(_BYTE *)(v17 + n0x100_4);
                if ( v18 )
                {
                  Line = ImageRenderNextLine(Pool_1, n0x100_5 + *(unsigned __int8 *)(v18 + Pool_1[3]));
                  v17 = Pool_1[4];
                  v20 = *(_BYTE *)(v17 + n0x100_4 - 1) ^ *(_BYTE *)(Line + Pool_1[2]);
                }
                else
                {
                  v20 = *(_BYTE *)(v17 + n0x100_4 - 1);
                }
                *(_BYTE *)(v17 + n0x100_4--) = v20;
              }
              while ( n0x100_4 > 0 );
              n0x100_1 = n0x100;
            }
            v21 = (_BYTE *)Pool_1[4];
            v22 = ImageRenderNextLine(Pool_1, n0x100_5 + *(unsigned __int8 *)((unsigned __int8)*v21 + Pool_1[3]));
            n0x100_2 = n0x100_5 + 1;
            *v21 = *(_BYTE *)(v22 + Pool_1[2]);
            n0x100_5 = n0x100_2;
          }
          while ( n0x100_2 < n0x100_1 );
          v15 = n0x100_1 < 0;
        }
        if ( !v15 )
        {
          do
          {
            *(_BYTE *)(Pool_1[4] + n0x100_3) = *(_BYTE *)(*(unsigned __int8 *)(Pool_1[4] + n0x100_3) + Pool_1[3]);
            ++n0x100_3;
          }
          while ( n0x100_3 <= n0x100_1 );
        }
      }
      else
      {
        return 0;
      }
    }
  }
  return Pool_1;
}