for (y = 0; y < renderer->base.frame_h; y++)
    {
      for (x = 0; x < renderer->base.frame_w; x++)
      {
        if (renderer->head_pointer_buffer[x + y * renderer->base.frame_h] != -1)
        {
          j = renderer->head_pointer_buffer[x + y * renderer->base.frame_h];
          while (j != -1)
          {
            S_Frag *fragment = fragvecGetPtr(renderer->node_buffer, j);
            col[index] = fragment->color;
            dep[index] = fragment->depth;
            index++;
            j = fragment->next;
          }
            for (j = 1; j < index; j++)
            {
              i = j;
              while (i > 0 && dep[i - 1] > dep[i])
              {
                tmp1 = dep[i];
                tmp2 = col[i];
                dep[i] = dep[i - 1];
                col[i] = col[i - 1];
                dep[i - 1] = tmp1;
                col[i - 1] = tmp2;
                i--;
              }
            }
            for (j = 0; j < index; j++)
            {
              a_src = col[j].alpha / 255.0;
              c_dst_red = a_dst * ( col[j].red) + c_dst_red;
              c_dst_green = a_dst * ( col[j].green) + c_dst_green;
              c_dst_blue = a_dst * ( col[j].blue) + c_dst_blue;
              a_dst = (1.0 - a_src) * a_dst;
            }
            c_dst_red = a_dst * PIXEL(pRenderer, x, y).red + c_dst_red;
            c_dst_green = a_dst * PIXEL(pRenderer, x, y).green + c_dst_green;
            c_dst_blue = a_dst * PIXEL(pRenderer, x, y).blue + c_dst_blue;
            a_dst = 1.0;
            PIXEL(pRenderer, x, y).red = ROUND2BYTE(c_dst_red);
            PIXEL(pRenderer, x, y).green = ROUND2BYTE(c_dst_green);
            PIXEL(pRenderer, x, y).blue = ROUND2BYTE(c_dst_blue);
            PIXEL(pRenderer, x, y).alpha = ROUND2BYTE(a_dst);
        }
        index = 0;
        c_dst_red = 0.0;
        c_dst_green = 0.0;
        c_dst_blue = 0.0;
        a_dst = 1.0;
      }
    }