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Fixed bug #89 Date: Sun, 23 Oct 2005 16:39:03 +0200 From: "A. Schmid" <sahib@phreaker.net> Subject: [SDL] no software surfaces with svgalib driver? Hi, I noticed that the SDL (1.2.9) svgalib driver only makes use of linear addressable (framebuffer) video modes. On older systems (like one of mine), linear addressable modes are often not available. Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is unusable, since VESA only supports framebuffering for VBE 2.0 and later. The changes necessary to add support for software surfaces seem to be relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see attached patch). The code worked fine for me, but it is no more than a proof of concept and should be reviewed (probably has a memory leak when switching modes). It also uses the vgagl library (included in the svgalib package) and needs to be linked against it. -Alex
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 12:05:16 +0000
parents d910939febfa
children 14717b52abc0
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/*
 *	Mouse vector
 *
 *	Patrice Mandin
 */

#ifndef _SDL_XBIOSINTERRUPT_S_H_
#define _SDL_XBIOSINTERRUPT_S_H_

#include <mint/osbind.h>

#include "SDL_stdinc.h"

/* Variables */

extern Uint16 SDL_AtariXbios_mouseb;	/* buttons */
extern Sint16 SDL_AtariXbios_mousex;	/* X relative motion */
extern Sint16 SDL_AtariXbios_mousey;	/* Y relative motion */
extern Uint16 SDL_AtariXbios_joystick;	/* Joystick */

/* Functions */ 

extern void SDL_AtariXbios_Install(_KBDVECS *kbdvecs,void *newmousevector,void *newjoystickvector);
extern void SDL_AtariXbios_Restore(_KBDVECS *kbdvecs);
extern void SDL_AtariXbios_MouseVector(void *buf);
extern void SDL_AtariXbios_JoystickVector(void *buf);

#endif /* _SDL_XBIOSINTERRUPT_S_H_ */