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SDL_xbios.c
941 lines (800 loc) · 22.8 KB
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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
*/
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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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#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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}
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break;
}
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/* Determine the current screen size */
if ( XBIOS_nummodes > 0 ) {
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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/* 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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583
if (flags & SDL_OPENGL) {
if (this->gl_config.double_buffer) {
flags |= SDL_DOUBLEBUF;
}
}
#endif
584
585
586
587
588
589
/* Double buffer ? */
if (flags & SDL_DOUBLEBUF) {
XBIOS_screensmem[1] = Atari_SysMalloc(new_screen_size, MX_STRAM);
if (XBIOS_screensmem[1]==NULL) {
XBIOS_FreeBuffers(this);
590
SDL_SetError("Can not allocate %d KB for double buffer", new_screen_size>>10);
591
592
return (NULL);
}
593
SDL_memset(XBIOS_screensmem[1], 0, new_screen_size);
594
595
596
597
598
599
600
601
602
603
604
605
606
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610
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612
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615
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618
619
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;
620
#if SDL_VIDEO_OPENGL
621
if (flags & SDL_OPENGL) {
622
if (!SDL_AtariGL_Init(this, current)) {
623
XBIOS_FreeBuffers(this);
624
625
SDL_SetError("Can not create OpenGL context");
return NULL;
626
627
628
629
630
631
632
633
}
modeflags |= SDL_OPENGL;
}
#endif
current->flags = modeflags;
634
/* Now set the video mode */
635
#ifndef DEBUG_VIDEO_XBIOS
636
Setscreen(-1,XBIOS_screens[0],-1);
637
#endif
638
639
640
switch(XBIOS_cvdo >> 16) {
case VDO_ST:
641
#ifndef DEBUG_VIDEO_XBIOS
642
Setscreen(-1,-1,new_video_mode->number);
643
#endif
644
645
/* Reset palette */
for (i=0;i<16;i++) {
646
TT_palette[i]= ((i>>1)<<8) | (((i*8)/17)<<4) | (i>>1);
647
}
648
#ifndef DEBUG_VIDEO_XBIOS
649
Setpalette(TT_palette);
650
#endif
651
652
break;
case VDO_STE:
653
#ifndef DEBUG_VIDEO_XBIOS
654
Setscreen(-1,-1,new_video_mode->number);
655
#endif
656
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658
659
660
661
662
663
/* 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;
}
664
#ifndef DEBUG_VIDEO_XBIOS
665
Setpalette(TT_palette);
666
#endif
667
668
break;
case VDO_TT:
669
#ifndef DEBUG_VIDEO_XBIOS
670
EsetShift(new_video_mode->number);
671
#endif
672
673
break;
case VDO_F30:
674
#ifndef DEBUG_VIDEO_XBIOS
675
676
677
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenSetmode(this, width, height, new_depth);
} else {
678
VsetMode(new_video_mode->number);
679
}
680
#endif
681
682
/* Set hardware palette to black in True Colour */
if (new_depth == 16) {
683
SDL_memset(F30_palette, 0, sizeof(F30_palette));
684
685
VsetRGB(0,256,F30_palette);
}
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
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;
720
721
722
surface = this->screen;
723
724
725
726
727
728
729
730
if ((surface->format->BitsPerPixel) == 8) {
int i;
for (i=0;i<numrects;i++) {
void *source,*destination;
int x1,x2;
x1 = rects[i].x & ~15;
731
732
733
734
x2 = rects[i].x+rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) +1;
}
735
736
737
738
739
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
740
destination = XBIOS_screens[XBIOS_fbnum];
741
742
743
744
destination += XBIOS_pitch * rects[i].y;
destination += x1;
/* Convert chunky to planar screen */
745
SDL_Atari_C2pConvert(
746
747
748
749
source,
destination,
x2-x1,
rects[i].h,
750
XBIOS_doubleline,
751
752
surface->pitch,
XBIOS_pitch
753
754
755
756
);
}
}
757
#ifndef DEBUG_VIDEO_XBIOS
758
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
759
#endif
760
761
762
763
764
765
766
767
Vsync();
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
XBIOS_fbnum ^= 1;
if ((surface->format->BitsPerPixel) > 8) {
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
}
768
769
770
771
772
}
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
{
if ((surface->format->BitsPerPixel) == 8) {
773
774
775
776
777
778
779
780
781
782
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;
783
/* Convert chunky to planar screen */
784
SDL_Atari_C2pConvert(
785
786
787
788
surface->pixels,
destscr,
surface->w,
surface->h,
789
XBIOS_doubleline,
790
791
surface->pitch,
XBIOS_pitch
792
793
794
);
}
795
#ifndef DEBUG_VIDEO_XBIOS
796
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
797
#endif
798
799
800
Vsync();
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
801
802
803
804
XBIOS_fbnum ^= 1;
if ((surface->format->BitsPerPixel) > 8) {
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
}
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;
}
826
SDL_Atari_C2pConvert4_pal(TT_palette); /* convert the lighting */
827
828
829
830
831
832
833
834
break;
case VDO_TT:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
835
TT_palette[i]=((r>>4)<<8)|((v>>4)<<4)|(b>>4);
836
}
837
#ifndef DEBUG_VIDEO_XBIOS
838
EsetPalette(firstcolor,ncolors,TT_palette);
839
#endif
840
841
842
843
844
845
846
847
break;
case VDO_F30:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
848
F30_palette[i]=(r<<16)|(v<<8)|b;
849
}
850
#ifndef DEBUG_VIDEO_XBIOS
851
VsetRGB(firstcolor,ncolors,F30_palette);
852
#endif
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
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 */
869
#ifndef DEBUG_VIDEO_XBIOS
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
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);
887
888
889
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenRestore(this, XBIOS_oldvmode);
} else {
890
VsetMode(XBIOS_oldvmode);
891
}
892
893
894
895
896
897
if (XBIOS_oldnumcol) {
VsetRGB(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
break;
}
Vsync();
898
#endif
899
900
901
#if SDL_VIDEO_OPENGL
902
903
904
905
906
if (gl_active) {
SDL_AtariGL_Quit(this, SDL_TRUE);
}
#endif
907
if (XBIOS_oldpalette) {
908
SDL_free(XBIOS_oldpalette);
909
910
911
912
913
914
915
916
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) {
917
SDL_free(SDL_modelist[j][i]);
918
919
920
921
922
SDL_modelist[j][i]=NULL;
}
}
}
923
if (XBIOS_modelist) {
924
SDL_free(XBIOS_modelist);
925
926
927
928
XBIOS_nummodes=0;
XBIOS_modelist=NULL;
}
929
930
this->screen->pixels = NULL;
}
931
932
#if SDL_VIDEO_OPENGL
933
934
935
static void XBIOS_GL_SwapBuffers(_THIS)
{
936
937
938
SDL_AtariGL_SwapBuffers(this);
XBIOS_FlipHWSurface(this, this->screen);
SDL_AtariGL_MakeCurrent(this);
939
940
941
}
#endif