SDL_xbios.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 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
*/
/*
* 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 "SDL_ataric2p_s.h"
#include "SDL_atarievents_c.h"
#include "SDL_atarimxalloc_c.h"
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#include "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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#define XBIOS_VID_DRIVER_NAME "xbios"
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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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/* 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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/* 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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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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/* 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);
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SDL_SetError("Can not allocate %d KB for frame buffer", new_screen_size>>10);
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return (NULL);
}
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SDL_memset(XBIOS_screensmem[0], 0, new_screen_size);
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XBIOS_screens[0]=(void *) (( (long) XBIOS_screensmem[0]+256) & 0xFFFFFF00UL);
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#if SDL_VIDEO_OPENGL
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if (flags & SDL_OPENGL) {
if (this->gl_config.double_buffer) {
flags |= SDL_DOUBLEBUF;
}
}
#endif
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/* Double buffer ? */
if (flags & SDL_DOUBLEBUF) {
XBIOS_screensmem[1] = Atari_SysMalloc(new_screen_size, MX_STRAM);
if (XBIOS_screensmem[1]==NULL) {
XBIOS_FreeBuffers(this);
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SDL_SetError("Can not allocate %d KB for double buffer", new_screen_size>>10);
584
585
return (NULL);
}
586
SDL_memset(XBIOS_screensmem[1], 0, new_screen_size);
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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;
613
#if SDL_VIDEO_OPENGL
614
if (flags & SDL_OPENGL) {
615
if (!SDL_AtariGL_Init(this, current)) {
616
XBIOS_FreeBuffers(this);
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618
SDL_SetError("Can not create OpenGL context");
return NULL;
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626
}
modeflags |= SDL_OPENGL;
}
#endif
current->flags = modeflags;
627
/* Now set the video mode */
628
#ifndef DEBUG_VIDEO_XBIOS
629
Setscreen(-1,XBIOS_screens[0],-1);
630
#endif
631
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switch(XBIOS_cvdo >> 16) {
case VDO_ST:
634
#ifndef DEBUG_VIDEO_XBIOS
635
Setscreen(-1,-1,new_video_mode->number);
636
#endif
637
638
/* Reset palette */
for (i=0;i<16;i++) {
639
TT_palette[i]= ((i>>1)<<8) | (((i*8)/17)<<4) | (i>>1);
641
#ifndef DEBUG_VIDEO_XBIOS
642
Setpalette(TT_palette);
643
#endif
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645
break;
case VDO_STE:
646
#ifndef DEBUG_VIDEO_XBIOS
647
Setscreen(-1,-1,new_video_mode->number);
648
#endif
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656
/* 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;
}
657
#ifndef DEBUG_VIDEO_XBIOS
658
Setpalette(TT_palette);
659
#endif
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661
break;
case VDO_TT:
662
#ifndef DEBUG_VIDEO_XBIOS
663
EsetShift(new_video_mode->number);
664
#endif
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666
break;
case VDO_F30:
667
#ifndef DEBUG_VIDEO_XBIOS
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if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenSetmode(this, width, height, new_depth);
} else {
671
VsetMode(new_video_mode->number);
673
#endif
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675
/* Set hardware palette to black in True Colour */
if (new_depth == 16) {
676
SDL_memset(F30_palette, 0, sizeof(F30_palette));
677
678
VsetRGB(0,256,F30_palette);
}
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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;
714
715
surface = this->screen;
716
717
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719
720
721
722
723
if ((surface->format->BitsPerPixel) == 8) {
int i;
for (i=0;i<numrects;i++) {
void *source,*destination;
int x1,x2;
x1 = rects[i].x & ~15;
724
725
726
727
x2 = rects[i].x+rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) +1;
}
728
729
730
731
732
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
733
destination = XBIOS_screens[XBIOS_fbnum];
734
735
736
737
destination += XBIOS_pitch * rects[i].y;
destination += x1;
/* Convert chunky to planar screen */
738
SDL_Atari_C2pConvert(
739
740
741
742
source,
destination,
x2-x1,
rects[i].h,
743
XBIOS_doubleline,
744
745
surface->pitch,
XBIOS_pitch
746
747
748
749
);
}
}
750
#ifndef DEBUG_VIDEO_XBIOS
751
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
752
#endif
753
754
755
756
757
758
759
760
Vsync();
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
XBIOS_fbnum ^= 1;
if ((surface->format->BitsPerPixel) > 8) {
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
}
761
762
763
764
765
}
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
{
if ((surface->format->BitsPerPixel) == 8) {
766
767
768
769
770
771
772
773
774
775
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;
776
/* Convert chunky to planar screen */
777
SDL_Atari_C2pConvert(
778
779
780
781
surface->pixels,
destscr,
surface->w,
surface->h,
782
XBIOS_doubleline,
783
784
surface->pitch,
XBIOS_pitch
785
786
787
);
}
788
#ifndef DEBUG_VIDEO_XBIOS
789
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
790
#endif
791
792
793
Vsync();
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
794
795
796
797
XBIOS_fbnum ^= 1;
if ((surface->format->BitsPerPixel) > 8) {
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
}
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;
}
819
SDL_Atari_C2pConvert4_pal(TT_palette); /* convert the lighting */
820
821
822
823
824
825
826
827
break;
case VDO_TT:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
828
TT_palette[i]=((r>>4)<<8)|((v>>4)<<4)|(b>>4);
830
#ifndef DEBUG_VIDEO_XBIOS
831
EsetPalette(firstcolor,ncolors,TT_palette);
832
#endif
833
834
835
836
837
838
839
840
break;
case VDO_F30:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
841
F30_palette[i]=(r<<16)|(v<<8)|b;
843
#ifndef DEBUG_VIDEO_XBIOS
844
VsetRGB(firstcolor,ncolors,F30_palette);
845
#endif
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
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 */
862
#ifndef DEBUG_VIDEO_XBIOS
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
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);
880
881
882
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenRestore(this, XBIOS_oldvmode);
} else {
883
VsetMode(XBIOS_oldvmode);
885
886
887
888
889
890
if (XBIOS_oldnumcol) {
VsetRGB(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
break;
}
Vsync();
894
#if SDL_VIDEO_OPENGL
895
896
897
898
899
if (gl_active) {
SDL_AtariGL_Quit(this, SDL_TRUE);
}
#endif
900
if (XBIOS_oldpalette) {
901
SDL_free(XBIOS_oldpalette);
902
903
904
905
906
907
908
909
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) {
910
SDL_free(SDL_modelist[j][i]);
911
912
913
914
915
SDL_modelist[j][i]=NULL;
}
}
}
916
if (XBIOS_modelist) {
917
SDL_free(XBIOS_modelist);
918
919
920
921
XBIOS_nummodes=0;
XBIOS_modelist=NULL;
}
922
923
this->screen->pixels = NULL;
}
925
#if SDL_VIDEO_OPENGL
926
927
928
static void XBIOS_GL_SwapBuffers(_THIS)
{
929
930
931
SDL_AtariGL_SwapBuffers(this);
XBIOS_FlipHWSurface(this, this->screen);
SDL_AtariGL_MakeCurrent(this);