int real_preview_xsize = MIN(level_xsize, preview.xsize);
int real_preview_ysize = MIN(level_ysize, preview.ysize);
int dst_x = SX + ALIGNED_XPOS(preview.x, preview_width, preview.align);
int real_preview_xsize = MIN(level_xsize, preview.xsize);
int real_preview_ysize = MIN(level_ysize, preview.ysize);
int dst_x = SX + ALIGNED_XPOS(preview.x, preview_width, preview.align);