SDL_xbios.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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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
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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/*
* Xbios SDL video driver
*
* Patrice Mandin
*/
#include <sys/stat.h>
#include <unistd.h>
/* Mint includes */
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#include <mint/cookie.h>
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#include <mint/osbind.h>
#include <mint/falcon.h>
#include "SDL_video.h"
#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
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#include "../ataricommon/SDL_ataric2p_s.h"
#include "../ataricommon/SDL_atarievents_c.h"
#include "../ataricommon/SDL_atarimxalloc_c.h"
#include "../ataricommon/SDL_atarigl_c.h"
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#include "SDL_xbios.h"
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#include "SDL_xbios_blowup.h"
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#include "SDL_xbios_centscreen.h"
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#include "SDL_xbios_sb3.h"
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#include "SDL_xbios_tveille.h"
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#define XBIOS_VID_DRIVER_NAME "xbios"
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#ifndef C_fVDI
#define C_fVDI 0x66564449L
#endif
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/* Debug print info */
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#if 0
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#define DEBUG_PRINT(what) \
{ \
printf what; \
}
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#define DEBUG_VIDEO_XBIOS 1
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#else
#define DEBUG_PRINT(what)
#undef DEBUG_VIDEO_XBIOS
#endif
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/* Initialization/Query functions */
static int XBIOS_VideoInit(_THIS, SDL_PixelFormat *vformat);
static SDL_Rect **XBIOS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
static SDL_Surface *XBIOS_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
static int XBIOS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
static void XBIOS_VideoQuit(_THIS);
/* Hardware surface functions */
static int XBIOS_AllocHWSurface(_THIS, SDL_Surface *surface);
static int XBIOS_LockHWSurface(_THIS, SDL_Surface *surface);
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface);
static void XBIOS_UnlockHWSurface(_THIS, SDL_Surface *surface);
static void XBIOS_FreeHWSurface(_THIS, SDL_Surface *surface);
static void XBIOS_UpdateRects(_THIS, int numrects, SDL_Rect *rects);
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#if SDL_VIDEO_OPENGL
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/* OpenGL functions */
static void XBIOS_GL_SwapBuffers(_THIS);
#endif
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/* To setup palette */
static unsigned short TT_palette[256];
static unsigned long F30_palette[256];
/* Xbios driver bootstrap functions */
static int XBIOS_Available(void)
{
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unsigned long cookie_vdo, cookie_mil, cookie_hade, cookie_scpn;
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unsigned long cookie_fvdi;
const char *envr = SDL_getenv("SDL_VIDEODRIVER");
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/* Milan/Hades Atari clones do not have an Atari video chip */
if ( (Getcookie(C__MIL, &cookie_mil) == C_FOUND) ||
(Getcookie(C_hade, &cookie_hade) == C_FOUND) ) {
return 0;
}
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/* fVDI means graphic card, so no Xbios with it */
if (Getcookie(C_fVDI, &cookie_fvdi) == C_FOUND) {
if (!envr) {
return 0;
}
if (SDL_strcmp(envr, XBIOS_VID_DRIVER_NAME)!=0) {
return 0;
}
/* Except if we force Xbios usage, through env var */
}
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/* Cookie _VDO present ? if not, assume ST machine */
if (Getcookie(C__VDO, &cookie_vdo) != C_FOUND) {
cookie_vdo = VDO_ST << 16;
}
/* Test if we have a monochrome monitor plugged in */
switch( cookie_vdo >>16) {
case VDO_ST:
case VDO_STE:
if ( Getrez() == (ST_HIGH>>8) )
return 0;
break;
case VDO_TT:
if ( (EgetShift() & ES_MODE) == TT_HIGH)
return 0;
break;
case VDO_F30:
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if ( VgetMonitor() == MONITOR_MONO)
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return 0;
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if (Getcookie(C_SCPN, &cookie_scpn) == C_FOUND) {
if (!SDL_XBIOS_SB3Usable((scpn_cookie_t *)cookie_scpn)) {
return 0;
}
}
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break;
default:
return 0;
}
return 1;
}
static void XBIOS_DeleteDevice(SDL_VideoDevice *device)
{
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SDL_free(device->hidden);
SDL_free(device);
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}
static SDL_VideoDevice *XBIOS_CreateDevice(int devindex)
{
SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
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device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
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if ( device ) {
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SDL_memset(device, 0, (sizeof *device));
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device->hidden = (struct SDL_PrivateVideoData *)
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SDL_malloc((sizeof *device->hidden));
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device->gl_data = (struct SDL_PrivateGLData *)
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SDL_malloc((sizeof *device->gl_data));
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}
if ( (device == NULL) || (device->hidden == NULL) ) {
SDL_OutOfMemory();
if ( device ) {
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SDL_free(device);
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}
return(0);
}
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SDL_memset(device->hidden, 0, (sizeof *device->hidden));
SDL_memset(device->gl_data, 0, sizeof(*device->gl_data));
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/* Video functions */
device->VideoInit = XBIOS_VideoInit;
device->ListModes = XBIOS_ListModes;
device->SetVideoMode = XBIOS_SetVideoMode;
device->SetColors = XBIOS_SetColors;
device->UpdateRects = NULL;
device->VideoQuit = XBIOS_VideoQuit;
device->AllocHWSurface = XBIOS_AllocHWSurface;
device->LockHWSurface = XBIOS_LockHWSurface;
device->UnlockHWSurface = XBIOS_UnlockHWSurface;
device->FlipHWSurface = XBIOS_FlipHWSurface;
device->FreeHWSurface = XBIOS_FreeHWSurface;
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#if SDL_VIDEO_OPENGL
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/* OpenGL functions */
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device->GL_LoadLibrary = SDL_AtariGL_LoadLibrary;
device->GL_GetProcAddress = SDL_AtariGL_GetProcAddress;
device->GL_GetAttribute = SDL_AtariGL_GetAttribute;
device->GL_MakeCurrent = SDL_AtariGL_MakeCurrent;
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device->GL_SwapBuffers = XBIOS_GL_SwapBuffers;
#endif
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/* Events */
device->InitOSKeymap = Atari_InitOSKeymap;
device->PumpEvents = Atari_PumpEvents;
device->free = XBIOS_DeleteDevice;
return device;
}
VideoBootStrap XBIOS_bootstrap = {
XBIOS_VID_DRIVER_NAME, "Atari Xbios driver",
XBIOS_Available, XBIOS_CreateDevice
};
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void SDL_XBIOS_AddMode(_THIS, Uint16 modecode, Uint16 width, Uint16 height,
Uint16 depth, SDL_bool flags)
{
int i, curpos;
xbiosmode_t *current_mode;
/* Check if mode already exists */
if (XBIOS_modelist) {
current_mode = XBIOS_modelist;
for (i=0;i<XBIOS_nummodes; i++, current_mode++) {
if (current_mode->width != width)
continue;
if (current_mode->height != height)
continue;
if (current_mode->depth != depth)
continue;
return;
}
}
++XBIOS_nummodes;
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XBIOS_modelist = (xbiosmode_t *) SDL_realloc(XBIOS_modelist, XBIOS_nummodes * sizeof(xbiosmode_t));
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/* Keep the list sorted: bpp, width, height */
curpos=0;
for(i=0; i<XBIOS_nummodes-1; i++) {
if (XBIOS_modelist[i].depth <= depth) {
if (XBIOS_modelist[i].width < width) {
break;
} else if (XBIOS_modelist[i].width == width) {
if (XBIOS_modelist[i].height <= height) {
break;
}
}
}
curpos++;
}
/* Push remaining modes further */
for(i=XBIOS_nummodes-1; i>curpos; i--) {
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SDL_memcpy(&XBIOS_modelist[i], &XBIOS_modelist[i-1], sizeof(xbiosmode_t));
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}
XBIOS_modelist[curpos].number = modecode;
XBIOS_modelist[curpos].width = width;
XBIOS_modelist[curpos].height = height;
XBIOS_modelist[curpos].depth = depth;
XBIOS_modelist[curpos].doubleline = flags;
}
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static int XBIOS_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
int i,j8,j16;
xbiosmode_t *current_mode;
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unsigned long cookie_blow, cookie_scpn, cookie_cnts;
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/* Initialize all variables that we clean on shutdown */
memset (SDL_modelist, 0, sizeof(SDL_modelist));
/* Cookie _VDO present ? if not, assume ST machine */
if (Getcookie(C__VDO, &XBIOS_cvdo) != C_FOUND) {
XBIOS_cvdo = VDO_ST << 16;
}
/* Allocate memory for old palette */
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XBIOS_oldpalette = (void *)SDL_malloc(256*sizeof(long));
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if ( !XBIOS_oldpalette ) {
SDL_SetError("Unable to allocate memory for old palette\n");
return(-1);
}
/* Initialize video mode list */
/* and save current screen status (palette, screen address, video mode) */
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XBIOS_nummodes = 0;
XBIOS_modelist = NULL;
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XBIOS_centscreen = SDL_FALSE;
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switch (XBIOS_cvdo >>16) {
case VDO_ST:
case VDO_STE:
{
short *oldpalette;
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SDL_XBIOS_AddMode(this, ST_LOW>>8,320,200,4,SDL_FALSE);
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XBIOS_oldvbase=Physbase();
XBIOS_oldvmode=Getrez();
switch(XBIOS_oldvmode << 8) {
case ST_LOW:
XBIOS_oldnumcol=16;
break;
case ST_MED:
XBIOS_oldnumcol=4;
break;
case ST_HIGH:
XBIOS_oldnumcol=2;
break;
default:
XBIOS_oldnumcol=0;
break;
}
oldpalette= (short *) XBIOS_oldpalette;
for (i=0;i<XBIOS_oldnumcol;i++) {
*oldpalette++=Setcolor(i,-1);
}
vformat->BitsPerPixel = 8;
}
break;
case VDO_TT:
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SDL_XBIOS_AddMode(this, TT_LOW,320,480,8,SDL_FALSE);
/* Software double-lined mode */
SDL_XBIOS_AddMode(this, TT_LOW,320,240,8,SDL_TRUE);
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XBIOS_oldvbase=Logbase();
XBIOS_oldvmode=EgetShift();
switch(XBIOS_oldvmode & ES_MODE) {
case TT_LOW:
XBIOS_oldnumcol=256;
break;
case ST_LOW:
case TT_MED:
XBIOS_oldnumcol=16;
break;
case ST_MED:
XBIOS_oldnumcol=4;
break;
case ST_HIGH:
case TT_HIGH:
XBIOS_oldnumcol=2;
break;
default:
XBIOS_oldnumcol=0;
break;
}
if (XBIOS_oldnumcol) {
EgetPalette(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
vformat->BitsPerPixel = 8;
break;
case VDO_F30:
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switch (VgetMonitor())
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{
case MONITOR_MONO:
/* Not usable */
break;
case MONITOR_RGB:
case MONITOR_TV:
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SDL_XBIOS_AddMode(this, BPS16|COL80|OVERSCAN|VERTFLAG,768,480,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|COL80|OVERSCAN,768,240,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|COL80|VERTFLAG,640,400,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|COL80,640,200,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|OVERSCAN|VERTFLAG,384,480,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|OVERSCAN,384,240,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|VERTFLAG,320,400,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16,320,200,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|COL80|OVERSCAN|VERTFLAG,768,480,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|COL80|OVERSCAN,768,240,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|COL80|VERTFLAG,640,400,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|COL80,640,200,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|OVERSCAN|VERTFLAG,384,480,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|OVERSCAN,384,240,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|VERTFLAG,320,400,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8,320,200,8,SDL_FALSE);
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break;
case MONITOR_VGA:
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SDL_XBIOS_AddMode(this, BPS16,320,480,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS16|VERTFLAG,320,240,16,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|COL80,640,480,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|COL80|VERTFLAG,640,240,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8,320,480,8,SDL_FALSE);
SDL_XBIOS_AddMode(this, BPS8|VERTFLAG,320,240,8,SDL_FALSE);
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break;
}
XBIOS_oldvbase=Logbase();
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XBIOS_oldvmode=VsetMode(-1);
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XBIOS_oldnumcol= 1<< (1 << (XBIOS_oldvmode & NUMCOLS));
if (XBIOS_oldnumcol > 256) {
XBIOS_oldnumcol = 0;
}
if (XBIOS_oldnumcol) {
VgetRGB(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
vformat->BitsPerPixel = 16;
/* Keep vga/rvb, and pal/ntsc bits */
current_mode = XBIOS_modelist;
for (i=0;i<XBIOS_nummodes;i++) {
Uint16 newvmode;
newvmode = current_mode->number;
newvmode &= ~(VGA|PAL);
newvmode |= XBIOS_oldvmode & (VGA|PAL);
current_mode->number = newvmode;
current_mode++;
}
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/* Initialize BlowUp/SB3/Centscreen stuff if present */
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if (Getcookie(C_BLOW, &cookie_blow) == C_FOUND) {
SDL_XBIOS_BlowupInit(this, (blow_cookie_t *)cookie_blow);
} else if (Getcookie(C_SCPN, &cookie_scpn) == C_FOUND) {
SDL_XBIOS_SB3Init(this, (scpn_cookie_t *)cookie_scpn);
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} else if (Getcookie(C_CNTS, &cookie_cnts) == C_FOUND) {
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XBIOS_oldvmode = SDL_XBIOS_CentscreenInit(this);
XBIOS_centscreen = SDL_TRUE;
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break;
}
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/* Determine the current screen size */
if ( XBIOS_nummodes > 0 ) {
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/* FIXME: parse video mode list to search for current mode */
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this->info.current_w = XBIOS_modelist[0].width;
this->info.current_h = XBIOS_modelist[0].height;
}
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current_mode = XBIOS_modelist;
j8 = j16 = 0;
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for (i=0; i<XBIOS_nummodes; i++, current_mode++) {
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switch (current_mode->depth) {
case 4:
case 8:
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SDL_modelist[0][j8] = SDL_malloc(sizeof(SDL_Rect));
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SDL_modelist[0][j8]->x = SDL_modelist[0][j8]->y = 0;
SDL_modelist[0][j8]->w = current_mode->width;
SDL_modelist[0][j8]->h = current_mode->height;
XBIOS_videomodes[0][j8]=current_mode;
j8++;
break;
case 16:
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SDL_modelist[1][j16] = SDL_malloc(sizeof(SDL_Rect));
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SDL_modelist[1][j16]->x = SDL_modelist[1][j16]->y = 0;
SDL_modelist[1][j16]->w = current_mode->width;
SDL_modelist[1][j16]->h = current_mode->height;
XBIOS_videomodes[1][j16]=current_mode;
j16++;
break;
}
}
SDL_modelist[0][j8] = NULL;
SDL_modelist[1][j16] = NULL;
XBIOS_screens[0]=NULL;
XBIOS_screens[1]=NULL;
XBIOS_shadowscreen=NULL;
/* Update hardware info */
this->info.hw_available = 1;
this->info.video_mem = (Uint32) Atari_SysMalloc(-1L, MX_STRAM);
/* Init chunky to planar routine */
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SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
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#if SDL_VIDEO_OPENGL
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SDL_AtariGL_InitPointers(this);
#endif
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/* Disable screensavers */
if (SDL_XBIOS_TveillePresent(this)) {
SDL_XBIOS_TveilleDisable(this);
}
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/* We're done! */
return(0);
}
static SDL_Rect **XBIOS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
/* 8 bits -> list 0 */
/* 16 bits -> list 1 */
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if ((format->BitsPerPixel != 8) && (format->BitsPerPixel !=16)) {
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return NULL;
}
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return(SDL_modelist[(format->BitsPerPixel)>>4]);
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}
static void XBIOS_FreeBuffers(_THIS)
{
int i;
for (i=0;i<2;i++) {
if (XBIOS_screensmem[i]!=NULL) {
Mfree(XBIOS_screensmem[i]);
XBIOS_screensmem[i]=NULL;
}
}
if (XBIOS_shadowscreen!=NULL) {
Mfree(XBIOS_shadowscreen);
XBIOS_shadowscreen=NULL;
}
}
static SDL_Surface *XBIOS_SetVideoMode(_THIS, SDL_Surface *current,
int width, int height, int bpp, Uint32 flags)
{
int mode, new_depth;
int i;
xbiosmode_t *new_video_mode;
Uint32 new_screen_size;
Uint32 modeflags;
/* Free current buffers */
XBIOS_FreeBuffers(this);
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/* Limit bpp */
if (bpp>16) {
bpp = 16;
}
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bpp >>= 4;
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/* Search if the mode exists (width, height, bpp) */
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for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) {
if ( (SDL_modelist[bpp][mode]->w == width) &&
(SDL_modelist[bpp][mode]->h == height) ) {
break;
}
}
if ( SDL_modelist[bpp][mode] == NULL ) {
SDL_SetError("Couldn't find requested mode in list");
return(NULL);
}
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modeflags = SDL_FULLSCREEN | SDL_PREALLOC;
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/* Allocate needed buffers: simple/double buffer and shadow surface */
new_video_mode = XBIOS_videomodes[bpp][mode];
new_depth = new_video_mode->depth;
if (new_depth == 4) {
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SDL_Atari_C2pConvert = SDL_Atari_C2pConvert4;
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new_depth=8;
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modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
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} else if (new_depth == 8) {
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SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
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modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
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} else {
modeflags |= SDL_HWSURFACE;
}
new_screen_size = width * height * ((new_depth)>>3);
new_screen_size += 256; /* To align on a 256 byte adress */
if (new_depth == 8) {
XBIOS_shadowscreen = Atari_SysMalloc(new_screen_size, MX_PREFTTRAM);
if (XBIOS_shadowscreen == NULL) {
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SDL_SetError("Can not allocate %d KB for shadow buffer", new_screen_size>>10);
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return (NULL);
}
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SDL_memset(XBIOS_shadowscreen, 0, new_screen_size);
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}
/* Output buffer needs to be twice in size for the software double-line mode */
XBIOS_doubleline = SDL_FALSE;
if (new_video_mode->doubleline) {
new_screen_size <<= 1;
XBIOS_doubleline = SDL_TRUE;
}
XBIOS_screensmem[0] = Atari_SysMalloc(new_screen_size, MX_STRAM);
if (XBIOS_screensmem[0]==NULL) {
XBIOS_FreeBuffers(this);
593
SDL_SetError("Can not allocate %d KB for frame buffer", new_screen_size>>10);
594
595
return (NULL);
}
596
SDL_memset(XBIOS_screensmem[0], 0, new_screen_size);
597
598
599
XBIOS_screens[0]=(void *) (( (long) XBIOS_screensmem[0]+256) & 0xFFFFFF00UL);
600
#if SDL_VIDEO_OPENGL
601
602
603
604
605
606
607
if (flags & SDL_OPENGL) {
if (this->gl_config.double_buffer) {
flags |= SDL_DOUBLEBUF;
}
}
#endif
608
609
610
611
612
613
/* Double buffer ? */
if (flags & SDL_DOUBLEBUF) {
XBIOS_screensmem[1] = Atari_SysMalloc(new_screen_size, MX_STRAM);
if (XBIOS_screensmem[1]==NULL) {
XBIOS_FreeBuffers(this);
614
SDL_SetError("Can not allocate %d KB for double buffer", new_screen_size>>10);
615
616
return (NULL);
}
617
SDL_memset(XBIOS_screensmem[1], 0, new_screen_size);
618
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621
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623
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643
XBIOS_screens[1]=(void *) (( (long) XBIOS_screensmem[1]+256) & 0xFFFFFF00UL);
modeflags |= SDL_DOUBLEBUF;
}
/* Allocate the new pixel format for the screen */
if ( ! SDL_ReallocFormat(current, new_depth, 0, 0, 0, 0) ) {
XBIOS_FreeBuffers(this);
SDL_SetError("Couldn't allocate new pixel format for requested mode");
return(NULL);
}
current->w = XBIOS_width = width;
current->h = XBIOS_height = height;
current->pitch = (width * new_depth)>>3;
/* this is for C2P conversion */
XBIOS_pitch = (new_video_mode->width * new_video_mode->depth)>>3;
if (new_depth == 8)
current->pixels = XBIOS_shadowscreen;
else
current->pixels = XBIOS_screens[0];
XBIOS_fbnum = 0;
644
#if SDL_VIDEO_OPENGL
645
if (flags & SDL_OPENGL) {
646
if (!SDL_AtariGL_Init(this, current)) {
647
XBIOS_FreeBuffers(this);
648
649
SDL_SetError("Can not create OpenGL context");
return NULL;
650
651
652
653
654
655
656
657
}
modeflags |= SDL_OPENGL;
}
#endif
current->flags = modeflags;
658
/* Now set the video mode */
659
#ifndef DEBUG_VIDEO_XBIOS
660
Setscreen(-1,XBIOS_screens[0],-1);
661
#endif
662
663
664
switch(XBIOS_cvdo >> 16) {
case VDO_ST:
665
#ifndef DEBUG_VIDEO_XBIOS
666
Setscreen(-1,-1,new_video_mode->number);
667
#endif
668
669
/* Reset palette */
for (i=0;i<16;i++) {
670
TT_palette[i]= ((i>>1)<<8) | (((i*8)/17)<<4) | (i>>1);
672
#ifndef DEBUG_VIDEO_XBIOS
673
Setpalette(TT_palette);
674
#endif
675
676
break;
case VDO_STE:
677
#ifndef DEBUG_VIDEO_XBIOS
678
Setscreen(-1,-1,new_video_mode->number);
679
#endif
680
681
682
683
684
685
686
687
/* Reset palette */
for (i=0;i<16;i++)
{
int c;
c=((i&1)<<3)|((i>>1)&7);
TT_palette[i]=(c<<8)|(c<<4)|c;
}
688
#ifndef DEBUG_VIDEO_XBIOS
689
Setpalette(TT_palette);
690
#endif
691
692
break;
case VDO_TT:
693
#ifndef DEBUG_VIDEO_XBIOS
694
EsetShift(new_video_mode->number);
695
#endif
696
697
break;
case VDO_F30:
698
#ifndef DEBUG_VIDEO_XBIOS
699
700
701
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenSetmode(this, width, height, new_depth);
} else {
702
VsetMode(new_video_mode->number);
704
#endif
705
706
/* Set hardware palette to black in True Colour */
if (new_depth == 16) {
707
SDL_memset(F30_palette, 0, sizeof(F30_palette));
708
709
VsetRGB(0,256,F30_palette);
}
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
break;
}
Vsync();
this->UpdateRects = XBIOS_UpdateRects;
return (current);
}
/* We don't actually allow hardware surfaces other than the main one */
static int XBIOS_AllocHWSurface(_THIS, SDL_Surface *surface)
{
return(-1);
}
static void XBIOS_FreeHWSurface(_THIS, SDL_Surface *surface)
{
return;
}
static int XBIOS_LockHWSurface(_THIS, SDL_Surface *surface)
{
return(0);
}
static void XBIOS_UnlockHWSurface(_THIS, SDL_Surface *surface)
{
return;
}
static void XBIOS_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
{
SDL_Surface *surface;
745
746
surface = this->screen;
747
748
749
750
751
752
753
754
if ((surface->format->BitsPerPixel) == 8) {
int i;
for (i=0;i<numrects;i++) {
void *source,*destination;
int x1,x2;
x1 = rects[i].x & ~15;
755
756
757
758
x2 = rects[i].x+rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) +1;
}
759
760
761
762
763
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
764
destination = XBIOS_screens[XBIOS_fbnum];
765
766
767
768
destination += XBIOS_pitch * rects[i].y;
destination += x1;
/* Convert chunky to planar screen */
769
SDL_Atari_C2pConvert(
770
771
772
773
source,
destination,
x2-x1,
rects[i].h,
774
XBIOS_doubleline,
775
776
surface->pitch,
XBIOS_pitch
777
778
779
780
);
}
}
781
#ifndef DEBUG_VIDEO_XBIOS
782
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
783
#endif
784
785
786
787
788
789
790
791
Vsync();
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
XBIOS_fbnum ^= 1;
if ((surface->format->BitsPerPixel) > 8) {
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
}
792
793
794
795
796
}
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
{
if ((surface->format->BitsPerPixel) == 8) {
797
798
799
800
801
802
803
804
805
806
void *destscr;
int destx;
/* Center on destination screen */
destscr = XBIOS_screens[XBIOS_fbnum];
destscr += XBIOS_pitch * ((XBIOS_height - surface->h) >> 1);
destx = (XBIOS_width - surface->w) >> 1;
destx &= ~15;
destscr += destx;
807
/* Convert chunky to planar screen */
808
SDL_Atari_C2pConvert(
809
810
811
812
surface->pixels,
destscr,
surface->w,
surface->h,
813
XBIOS_doubleline,
814
815
surface->pitch,
XBIOS_pitch
816
817
818
);
}
819
#ifndef DEBUG_VIDEO_XBIOS
820
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
821
#endif
822
823
824
Vsync();
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
825
826
827
828
XBIOS_fbnum ^= 1;
if ((surface->format->BitsPerPixel) > 8) {
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
}
return(0);
}
static int XBIOS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
{
int i;
int r,v,b;
switch( XBIOS_cvdo >> 16) {
case VDO_ST:
case VDO_STE:
for (i=0;i<ncolors;i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
TT_palette[firstcolor+i]=((r*30)+(v*59)+(b*11))/100;
}
850
SDL_Atari_C2pConvert4_pal(TT_palette); /* convert the lighting */
851
852
853
854
855
856
857
858
break;
case VDO_TT:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
859
TT_palette[i]=((r>>4)<<8)|((v>>4)<<4)|(b>>4);
861
#ifndef DEBUG_VIDEO_XBIOS
862
EsetPalette(firstcolor,ncolors,TT_palette);
863
#endif
864
865
866
867
868
869
870
871
break;
case VDO_F30:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
872
F30_palette[i]=(r<<16)|(v<<8)|b;
874
#ifndef DEBUG_VIDEO_XBIOS
875
VsetRGB(firstcolor,ncolors,F30_palette);
876
#endif
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
break;
}
return(1);
}
/* Note: If we are terminated, this could be called in the middle of
another SDL video routine -- notably UpdateRects.
*/
static void XBIOS_VideoQuit(_THIS)
{
int i,j;
Atari_ShutdownEvents();
/* Restore video mode and palette */
893
#ifndef DEBUG_VIDEO_XBIOS
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
switch(XBIOS_cvdo >> 16) {
case VDO_ST:
case VDO_STE:
Setscreen(-1,XBIOS_oldvbase,XBIOS_oldvmode);
if (XBIOS_oldnumcol) {
Setpalette(XBIOS_oldpalette);
}
break;
case VDO_TT:
Setscreen(-1,XBIOS_oldvbase,-1);
EsetShift(XBIOS_oldvmode);
if (XBIOS_oldnumcol) {
EsetPalette(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
break;
case VDO_F30:
Setscreen(-1, XBIOS_oldvbase, -1);
911
912
913
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenRestore(this, XBIOS_oldvmode);
} else {
914
VsetMode(XBIOS_oldvmode);
916
917
918
919
920
921
if (XBIOS_oldnumcol) {
VsetRGB(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
break;
}
Vsync();
925
#if SDL_VIDEO_OPENGL
926
927
928
929
930
if (gl_active) {
SDL_AtariGL_Quit(this, SDL_TRUE);
}
#endif
931
if (XBIOS_oldpalette) {
932
SDL_free(XBIOS_oldpalette);
933
934
935
936
937
938
939
940
XBIOS_oldpalette=NULL;
}
XBIOS_FreeBuffers(this);
/* Free mode list */
for (j=0;j<NUM_MODELISTS;j++) {
for (i=0;i<SDL_NUMMODES;i++) {
if (SDL_modelist[j][i]!=NULL) {
941
SDL_free(SDL_modelist[j][i]);
942
943
944
945
946
SDL_modelist[j][i]=NULL;
}
}
}
947
if (XBIOS_modelist) {
948
SDL_free(XBIOS_modelist);
949
950
951
952
XBIOS_nummodes=0;
XBIOS_modelist=NULL;
}
953
this->screen->pixels = NULL;
954
955
956
957
958
/* Restore screensavers */
if (SDL_XBIOS_TveillePresent(this)) {
SDL_XBIOS_TveilleRestore(this);
}
961
#if SDL_VIDEO_OPENGL
962
963
964
static void XBIOS_GL_SwapBuffers(_THIS)
{
965
966
967
SDL_AtariGL_SwapBuffers(this);
XBIOS_FlipHWSurface(this, this->screen);
SDL_AtariGL_MakeCurrent(this);