/*+
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    SDL - Simple DirectMedia Layer+
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    Copyright (C) 1997-2004 Sam Lantinga+
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+
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    This library is free software; you can redistribute it and/or+
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    modify it under the terms of the GNU Library General Public+
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    License as published by the Free Software Foundation; either+
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    version 2 of the License, or (at your option) any later version.+
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+
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    This library is distributed in the hope that it will be useful,+
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    but WITHOUT ANY WARRANTY; without even the implied warranty of+
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU+
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    Library General Public License for more details.+
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+
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    You should have received a copy of the GNU Library General Public+
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    License along with this library; if not, write to the Free+
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA+
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+
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    Sam Lantinga+
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    slouken@libsdl.org+
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*/+
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#include "SDL_config.h"+
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+
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/*+
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	ScreenBlaster 3 functions+
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+
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	Patrice Mandin+
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*/+
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+
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/*--- Includes ---*/+
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+
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#include "SDL_stdinc.h"+
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#include "SDL_xbios.h"+
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#include "SDL_xbios_sb3.h"+
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+
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/*--- Defines ---*/+
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+
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const int SDL_XBIOS_scpn_planes_device[]={+
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	SCPN_DEV_1BPP,+
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	SCPN_DEV_4BPP,+
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	SCPN_DEV_8BPP,+
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	SCPN_DEV_16BPP,+
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	SCPN_DEV_2BPP,+
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	SCPN_DEV_4BPP,+
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	SCPN_DEV_1BPP+
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};+
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+
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/*--- Functions ---*/+
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+
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int SDL_XBIOS_SB3Usable(scpn_cookie_t *cookie_scpn)+
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{+
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	scpn_screeninfo_t *scrinfo;+
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	int bpp;+
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+
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	/* Check if current SB3 mode is usable, i.e. 8 or 16bpp */+
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	scrinfo = cookie_scpn->screen_info;+
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	bpp = 1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]);+
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+
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	if ((bpp==8) || (bpp==16)) {+
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		return 1;+
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	}+
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+
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	return 0;+
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}+
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+
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void SDL_XBIOS_SB3Init(_THIS, scpn_cookie_t *cookie_scpn)+
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{+
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	scpn_screeninfo_t *scrinfo;+
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+
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	/* SB3 prevent changing video modes, we can only use current one */+
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	if (XBIOS_modelist) {+
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		SDL_free(XBIOS_modelist);+
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		XBIOS_nummodes = 0;+
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		XBIOS_modelist = NULL;+
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	}+
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+
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	scrinfo = cookie_scpn->screen_info;+
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	scrinfo->h_pos = scrinfo->v_pos = 0;+
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+
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	SDL_XBIOS_AddMode(this,+
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		-1,+
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		scrinfo->virtual_width, scrinfo->virtual_height,+
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		1<<(SDL_XBIOS_scpn_planes_device[scrinfo->device]),+
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		SDL_FALSE+
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	);+
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}+
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