src/video/svga/SDL_svgavideo.c
author Sam Lantinga <slouken@lokigames.com>
Sat, 16 Jun 2001 01:32:09 +0000
changeset 67 3647c809813d
parent 1 cf2af46e9e2a
child 205 13161d3d349d
permissions -rw-r--r--
Support for SVGALib 2.0, thanks to Benjamin Joel Stover
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
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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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    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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    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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    Sam Lantinga
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    slouken@devolution.com
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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/* SVGAlib based SDL video driver implementation.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#if defined(linux)
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#include <linux/vt.h>
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#elif defined(__FreeBSD__)
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#include <sys/consio.h>
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#else
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#error You must choose your operating system here
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#endif
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#include <vga.h>
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#include <vgamouse.h>
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#include <vgakeyboard.h>
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#include "SDL.h"
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#include "SDL_error.h"
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#include "SDL_video.h"
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#include "SDL_mouse.h"
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#include "SDL_sysvideo.h"
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#include "SDL_pixels_c.h"
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#include "SDL_events_c.h"
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#include "SDL_svgavideo.h"
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#include "SDL_svgaevents_c.h"
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#include "SDL_svgamouse_c.h"
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/* Initialization/Query functions */
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static int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat);
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static SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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static SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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static int SVGA_SetColors(_THIS, int firstcolor, int ncolors,
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			  SDL_Color *colors);
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static void SVGA_VideoQuit(_THIS);
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/* Hardware surface functions */
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static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface);
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static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface);
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static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface);
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static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface);
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static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface);
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/* SVGAlib driver bootstrap functions */
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static int SVGA_Available(void)
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{
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	/* Check to see if we are root and stdin is a virtual console */
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	int console;
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	/* SVGALib 1.9.x+ doesn't require root (via /dev/svga) */
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	int svgalib2 = -1;
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	/* See if we are connected to a virtual terminal */
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	console = STDIN_FILENO;
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	if ( console >= 0 ) {
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		struct stat sb;
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		struct vt_mode dummy;
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		if ( (fstat(console, &sb) < 0) ||
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		     (ioctl(console, VT_GETMODE, &dummy) < 0) ) {
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			console = -1;
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		}
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	}
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	/* See if SVGAlib 2.0 is available */
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	svgalib2 = open("/dev/svga", O_RDONLY);
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	if (svgalib2 != -1) {
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		close(svgalib2);
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	}
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	return(((svgalib2 != -1) || (geteuid() == 0)) && (console >= 0));
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}
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static void SVGA_DeleteDevice(SDL_VideoDevice *device)
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{
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	free(device->hidden);
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	free(device);
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}
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static SDL_VideoDevice *SVGA_CreateDevice(int devindex)
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{
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	SDL_VideoDevice *device;
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	/* Initialize all variables that we clean on shutdown */
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	device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
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	if ( device ) {
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		memset(device, 0, (sizeof *device));
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		device->hidden = (struct SDL_PrivateVideoData *)
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				malloc((sizeof *device->hidden));
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	}
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	if ( (device == NULL) || (device->hidden == NULL) ) {
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		SDL_OutOfMemory();
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		if ( device ) {
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			free(device);
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		}
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		return(0);
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	}
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	memset(device->hidden, 0, (sizeof *device->hidden));
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	/* Set the function pointers */
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	device->VideoInit = SVGA_VideoInit;
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	device->ListModes = SVGA_ListModes;
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	device->SetVideoMode = SVGA_SetVideoMode;
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	device->SetColors = SVGA_SetColors;
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	device->UpdateRects = NULL;
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	device->VideoQuit = SVGA_VideoQuit;
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	device->AllocHWSurface = SVGA_AllocHWSurface;
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	device->CheckHWBlit = NULL;
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	device->FillHWRect = NULL;
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	device->SetHWColorKey = NULL;
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	device->SetHWAlpha = NULL;
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	device->LockHWSurface = SVGA_LockHWSurface;
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	device->UnlockHWSurface = SVGA_UnlockHWSurface;
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	device->FlipHWSurface = NULL;
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	device->FreeHWSurface = SVGA_FreeHWSurface;
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	device->SetCaption = NULL;
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	device->SetIcon = NULL;
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	device->IconifyWindow = NULL;
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	device->GrabInput = NULL;
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	device->GetWMInfo = NULL;
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	device->InitOSKeymap = SVGA_InitOSKeymap;
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	device->PumpEvents = SVGA_PumpEvents;
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	device->free = SVGA_DeleteDevice;
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	return device;
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}
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VideoBootStrap SVGALIB_bootstrap = {
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	"svgalib", "SVGAlib",
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	SVGA_Available, SVGA_CreateDevice
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};
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static int SVGA_AddMode(_THIS, int mode, int actually_add, int force)
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{
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	vga_modeinfo *modeinfo;
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	modeinfo = vga_getmodeinfo(mode);
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	if ( force || ( modeinfo->flags & CAPABLE_LINEAR ) ) {
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		int i, j;
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		i = modeinfo->bytesperpixel-1;
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		if ( actually_add ) {
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			SDL_Rect saved_rect[2];
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			int      saved_mode[2];
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			int b;
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			/* Add the mode, sorted largest to smallest */
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			b = 0;
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			j = 0;
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			while ( (SDL_modelist[i][j]->w > modeinfo->width) ||
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			        (SDL_modelist[i][j]->h > modeinfo->height) ) {
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				++j;
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			}
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			/* Skip modes that are already in our list */
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			if ( (SDL_modelist[i][j]->w == modeinfo->width) &&
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			     (SDL_modelist[i][j]->h == modeinfo->height) ) {
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				return(0);
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			}
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			/* Insert the new mode */
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			saved_rect[b] = *SDL_modelist[i][j];
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			saved_mode[b] = SDL_vgamode[i][j];
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			SDL_modelist[i][j]->w = modeinfo->width;
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			SDL_modelist[i][j]->h = modeinfo->height;
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			SDL_vgamode[i][j] = mode;
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			/* Everybody scoot down! */
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			if ( saved_rect[b].w && saved_rect[b].h ) {
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			    for ( ++j; SDL_modelist[i][j]->w; ++j ) {
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				saved_rect[!b] = *SDL_modelist[i][j];
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				saved_mode[!b] = SDL_vgamode[i][j];
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				*SDL_modelist[i][j] = saved_rect[b];
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				SDL_vgamode[i][j] = saved_mode[b];
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				b = !b;
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			    }
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			    *SDL_modelist[i][j] = saved_rect[b];
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			    SDL_vgamode[i][j] = saved_mode[b];
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			}
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		} else {
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			++SDL_nummodes[i];
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		}
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	}
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	return( force || ( modeinfo->flags & CAPABLE_LINEAR ) );
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}
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   218
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static void SVGA_UpdateVideoInfo(_THIS)
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{
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	vga_modeinfo *modeinfo;
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   222
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	this->info.wm_available = 0;
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   224
	this->info.hw_available = 1;
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   225
	modeinfo = vga_getmodeinfo(vga_getcurrentmode());
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   226
	this->info.video_mem = (modeinfo->maxpixels/1024);
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   227
	if ( modeinfo->bytesperpixel > 0 ) {
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		this->info.video_mem *= modeinfo->bytesperpixel;
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   229
	}
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   230
	/* FIXME: Add hardware accelerated blit information */
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   231
#if 0
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   232
printf("Hardware accelerated blit: %savailable\n", modeinfo->haveblit ? "" : "not ");
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   233
#endif
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   234
}
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   235
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   236
int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat)
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   237
{
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   238
	int keyboard;
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   239
	int i, j;
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   240
	int mode, total_modes;
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   241
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   242
	/* Initialize all variables that we clean on shutdown */
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   243
	for ( i=0; i<NUM_MODELISTS; ++i ) {
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   244
		SDL_nummodes[i] = 0;
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   245
		SDL_modelist[i] = NULL;
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   246
		SDL_vgamode[i] = NULL;
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   247
	}
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   248
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   249
	/* Initialize the library */
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   250
	vga_disabledriverreport();
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   251
	if ( vga_init() < 0 ) {
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   252
		SDL_SetError("Unable to initialize SVGAlib");
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   253
		return(-1);
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   254
	}
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   255
	vga_setmode(TEXT);
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   256
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   257
	/* Enable mouse and keyboard support */
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   258
	vga_setmousesupport(1);
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   259
	keyboard = keyboard_init_return_fd();
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   260
	if ( keyboard < 0 ) {
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   261
		SDL_SetError("Unable to initialize keyboard");
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   262
		return(-1);
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diff changeset
   263
	}
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   264
	if ( SVGA_initkeymaps(keyboard) < 0 ) {
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   265
		return(-1);
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   266
	}
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   267
	keyboard_seteventhandler(SVGA_keyboardcallback);
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   268
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   269
	/* Determine the screen depth (use default 8-bit depth) */
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   270
	vformat->BitsPerPixel = 8;
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   271
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   272
	/* Enumerate the available fullscreen modes */
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   273
	total_modes = 0;
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   274
	for ( mode=vga_lastmodenumber(); mode; --mode ) {
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   275
		if ( vga_hasmode(mode) ) {
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   276
			if ( SVGA_AddMode(this, mode, 0, 0) ) {
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   277
				++total_modes;
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diff changeset
   278
			}
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   279
		}
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   280
	}
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   281
	if ( SVGA_AddMode(this, G320x200x256, 0, 1) ) ++total_modes;
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   282
	if ( total_modes == 0 ) {
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   283
		SDL_SetError("No linear video modes available");
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   284
		return(-1);
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diff changeset
   285
	}
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   286
	for ( i=0; i<NUM_MODELISTS; ++i ) {
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   287
		SDL_vgamode[i] = (int *)malloc(SDL_nummodes[i]*sizeof(int));
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   288
		if ( SDL_vgamode[i] == NULL ) {
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   289
			SDL_OutOfMemory();
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   290
			return(-1);
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   291
		}
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   292
		SDL_modelist[i] = (SDL_Rect **)
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   293
				malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *));
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   294
		if ( SDL_modelist[i] == NULL ) {
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   295
			SDL_OutOfMemory();
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   296
			return(-1);
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   297
		}
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   298
		for ( j=0; j<SDL_nummodes[i]; ++j ) {
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   299
			SDL_modelist[i][j]=(SDL_Rect *)malloc(sizeof(SDL_Rect));
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   300
			if ( SDL_modelist[i][j] == NULL ) {
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diff changeset
   301
				SDL_OutOfMemory();
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   302
				return(-1);
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diff changeset
   303
			}
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   304
			memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect));
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   305
		}
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   306
		SDL_modelist[i][j] = NULL;
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   307
	}
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parents:
diff changeset
   308
	for ( mode=vga_lastmodenumber(); mode; --mode ) {
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diff changeset
   309
		if ( vga_hasmode(mode) ) {
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   310
			SVGA_AddMode(this, mode, 1, 0);
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   311
		}
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diff changeset
   312
	}
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   313
	SVGA_AddMode(this, G320x200x256, 1, 1);
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parents:
diff changeset
   314
74212992fb08 Initial revision
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parents:
diff changeset
   315
	/* Free extra (duplicated) modes */
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parents:
diff changeset
   316
	for ( i=0; i<NUM_MODELISTS; ++i ) {
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diff changeset
   317
		j = 0;
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diff changeset
   318
		while ( SDL_modelist[i][j] && SDL_modelist[i][j]->w ) {
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parents:
diff changeset
   319
			j++;
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parents:
diff changeset
   320
		}
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parents:
diff changeset
   321
		while ( SDL_modelist[i][j] ) {
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diff changeset
   322
			free(SDL_modelist[i][j]);
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parents:
diff changeset
   323
			SDL_modelist[i][j] = NULL;
74212992fb08 Initial revision
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parents:
diff changeset
   324
			j++;
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parents:
diff changeset
   325
		}
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   326
	}
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parents:
diff changeset
   327
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   328
	/* Fill in our hardware acceleration capabilities */
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parents:
diff changeset
   329
	SVGA_UpdateVideoInfo(this);
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parents:
diff changeset
   330
74212992fb08 Initial revision
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parents:
diff changeset
   331
	/* We're done! */
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parents:
diff changeset
   332
	return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   333
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   334
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   335
SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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parents:
diff changeset
   336
{
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   337
	return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
74212992fb08 Initial revision
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parents:
diff changeset
   338
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   339
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   340
/* Various screen update functions available */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   341
static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   342
static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   343
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   344
SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current,
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parents:
diff changeset
   345
				int width, int height, int bpp, Uint32 flags)
74212992fb08 Initial revision
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parents:
diff changeset
   346
{
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   347
	int mode;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   348
	int vgamode;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   349
	vga_modeinfo *modeinfo;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   350
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   351
	/* Try to set the requested linear video mode */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   352
	bpp = (bpp+7)/8-1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   353
	for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   354
		if ( (SDL_modelist[bpp][mode]->w == width) &&
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   355
		     (SDL_modelist[bpp][mode]->h == height) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   356
			break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   357
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   358
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   359
	if ( SDL_modelist[bpp][mode] == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   360
		SDL_SetError("Couldn't find requested mode in list");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   361
		return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   362
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   363
	vga_setmode(SDL_vgamode[bpp][mode]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   364
	vga_setpage(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   365
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   366
	vgamode=SDL_vgamode[bpp][mode];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   367
	if ((vga_setlinearaddressing()<0) && (vgamode!=G320x200x256)) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   368
		SDL_SetError("Unable to set linear addressing");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   369
		return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   370
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   371
	modeinfo = vga_getmodeinfo(SDL_vgamode[bpp][mode]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   372
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   373
	/* Update hardware acceleration info */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   374
	SVGA_UpdateVideoInfo(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   375
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   376
	/* Allocate the new pixel format for the screen */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   377
	bpp = (bpp+1)*8;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   378
	if ( (bpp == 16) && (modeinfo->colors == 32768) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   379
		bpp = 15;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   380
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   381
	if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   382
		return(NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   383
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   384
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   385
	/* Set up the new mode framebuffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   386
	current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE);
1
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   387
	if ( bpp == 8 ) {
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   388
		/* FIXME: What about DirectColor? */
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   389
		current->flags |= SDL_HWPALETTE;
cf2af46e9e2a Changes since SDL 1.2.0 release
Sam Lantinga <slouken@lokigames.com>
parents: 0
diff changeset
   390
	}
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   391
	current->w = width;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   392
	current->h = height;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   393
	current->pitch = modeinfo->linewidth;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   394
	current->pixels = vga_getgraphmem();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   395
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   396
	/* Set the blit function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   397
	this->UpdateRects = SVGA_DirectUpdate;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   398
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   399
	/* Set up the mouse handler again (buggy SVGAlib 1.40) */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   400
	mouse_seteventhandler(SVGA_mousecallback);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   401
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   402
	/* We're done */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   403
	return(current);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   404
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   405
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   406
/* We don't actually allow hardware surfaces other than the main one */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   407
static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   408
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   409
	return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   410
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   411
static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   412
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   413
	return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   414
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   415
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   416
/* We need to wait for vertical retrace on page flipped displays */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   417
static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   418
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   419
	if ( (surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   420
		vga_waitretrace();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   421
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   422
	return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   423
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   424
static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   425
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   426
	return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   427
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   428
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   429
/* FIXME: How is this done with SVGAlib? */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   430
static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   431
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   432
	return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   433
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   434
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   435
static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   436
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   437
	return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   438
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   439
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   440
/* FIXME: Can this be used under SVGAlib? */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   441
static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   442
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   443
	return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   444
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   445
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   446
int SVGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   447
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   448
        int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   449
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   450
	for(i = 0; i < ncolors; i++) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   451
	        vga_setpalette(firstcolor + i,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   452
			       colors[i].r>>2,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   453
			       colors[i].g>>2,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   454
			       colors[i].b>>2);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   455
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   456
	return(1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   457
}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   458
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   459
/* Note:  If we are terminated, this could be called in the middle of
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   460
   another SDL video routine -- notably UpdateRects.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   461
*/
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   462
void SVGA_VideoQuit(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   463
{
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   464
	int i, j;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   465
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   466
	/* Reset the console video mode */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   467
	if ( this->screen && (this->screen->w && this->screen->h) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   468
		vga_setmode(TEXT);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   469
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   470
	keyboard_close();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   471
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   472
	/* Free video mode lists */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   473
	for ( i=0; i<NUM_MODELISTS; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   474
		if ( SDL_modelist[i] != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   475
			for ( j=0; SDL_modelist[i][j]; ++j )
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   476
				free(SDL_modelist[i][j]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   477
			free(SDL_modelist[i]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   478
			SDL_modelist[i] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   479
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   480
		if ( SDL_vgamode[i] != NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   481
			free(SDL_vgamode[i]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   482
			SDL_vgamode[i] = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   483
		}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   484
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   485
	if ( this->screen && (this->screen->flags & SDL_HWSURFACE) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   486
		/* Direct screen access, no memory buffer */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   487
		this->screen->pixels = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   488
	}
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   489
}