| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with this library; if not, write to the Free |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| /* |
| ScreenBlaster 3 functions |
| |
| Patrice Mandin |
| */ |
| |
| /*--- Includes ---*/ |
| |
| #include "SDL_stdinc.h" |
| #include "SDL_xbios.h" |
| #include "SDL_xbios_sb3.h" |
| |
| /*--- Defines ---*/ |
| |
| const int SDL_XBIOS_scpn_planes_device[]={ |
| SCPN_DEV_1BPP, |
| SCPN_DEV_4BPP, |
| SCPN_DEV_8BPP, |
| SCPN_DEV_16BPP, |
| SCPN_DEV_2BPP, |
| SCPN_DEV_4BPP, |
| SCPN_DEV_1BPP |
| }; |
| |
| /*--- Functions ---*/ |
| |
| int SDL_XBIOS_SB3Usable(scpn_cookie_t *cookie_scpn) |
| { |
| scpn_screeninfo_t *scrinfo; |
| int bpp; |
| |
| /* Check if current SB3 mode is usable, i.e. 8 or 16bpp */ |
| scrinfo = cookie_scpn->screen_info; |
| bpp = 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]); |
| |
| if ((bpp==8) || (bpp==16)) { |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| void SDL_XBIOS_ListSB3Modes(_THIS, int actually_add, scpn_cookie_t *cookie_scpn) |
| { |
| scpn_screeninfo_t *scrinfo; |
| xbiosmode_t modeinfo; |
| |
| scrinfo = cookie_scpn->screen_info; |
| if (actually_add) { |
| scrinfo->h_pos = scrinfo->v_pos = 0; |
| } |
| |
| modeinfo.number = -1; |
| modeinfo.width = scrinfo->virtual_width; |
| modeinfo.height = scrinfo->virtual_height; |
| modeinfo.depth = 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]); |
| modeinfo.flags = (modeinfo.depth == 8 ? XBIOSMODE_C2P : 0); |
| |
| SDL_XBIOS_AddMode(this, actually_add, &modeinfo); |
| } |