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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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#include "SDL_xbios_milan.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];
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/* Default list of video modes */
static const xbiosmode_t stmodes[1]={
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{ST_LOW>>8,320,200,4, XBIOSMODE_C2P}
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};
static const xbiosmode_t ttmodes[2]={
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{TT_LOW,320,480,8, XBIOSMODE_C2P},
{TT_LOW,320,240,8, XBIOSMODE_C2P|XBIOSMODE_DOUBLELINE}
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};
static const xbiosmode_t falconrgbmodes[16]={
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{BPS16|COL80|OVERSCAN|VERTFLAG,768,480,16,0},
{BPS16|COL80|OVERSCAN,768,240,16,0},
{BPS16|COL80|VERTFLAG,640,400,16,0},
{BPS16|COL80,640,200,16,0},
{BPS16|OVERSCAN|VERTFLAG,384,480,16,0},
{BPS16|OVERSCAN,384,240,16,0},
{BPS16|VERTFLAG,320,400,16,0},
{BPS16,320,200,16,0},
{BPS8|COL80|OVERSCAN|VERTFLAG,768,480,8,XBIOSMODE_C2P},
{BPS8|COL80|OVERSCAN,768,240,8,XBIOSMODE_C2P},
{BPS8|COL80|VERTFLAG,640,400,8,XBIOSMODE_C2P},
{BPS8|COL80,640,200,8,XBIOSMODE_C2P},
{BPS8|OVERSCAN|VERTFLAG,384,480,8,XBIOSMODE_C2P},
{BPS8|OVERSCAN,384,240,8,XBIOSMODE_C2P},
{BPS8|VERTFLAG,320,400,8,XBIOSMODE_C2P},
{BPS8,320,200,8,XBIOSMODE_C2P}
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};
static const xbiosmode_t falconvgamodes[6]={
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{BPS16,320,480,16,0},
{BPS16|VERTFLAG,320,240,16,0},
{BPS8|COL80,640,480,8,XBIOSMODE_C2P},
{BPS8|COL80|VERTFLAG,640,240,8,XBIOSMODE_C2P},
{BPS8,320,480,8,XBIOSMODE_C2P},
{BPS8|VERTFLAG,320,240,8,XBIOSMODE_C2P}
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};
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/* 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 */
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if ( /*(Getcookie(C__MIL, &cookie_mil) == C_FOUND) ||*/
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(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;
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case VDO_MILAN:
break;
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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, int actually_add, const xbiosmode_t *modeinfo)
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{
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int i = 0;
switch(modeinfo->depth) {
case 15:
case 16:
i = 1;
break;
case 24:
i = 2;
break;
case 32:
i = 3;
break;
}
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if ( actually_add ) {
SDL_Rect saved_rect[2];
xbiosmode_t saved_mode[2];
int b, j;
/* Add the mode, sorted largest to smallest */
b = 0;
j = 0;
while ( (SDL_modelist[i][j]->w > modeinfo->width) ||
(SDL_modelist[i][j]->h > modeinfo->height) ) {
++j;
}
/* Skip modes that are already in our list */
if ( (SDL_modelist[i][j]->w == modeinfo->width) &&
(SDL_modelist[i][j]->h == modeinfo->height) ) {
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return;
}
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/* Insert the new mode */
saved_rect[b] = *SDL_modelist[i][j];
SDL_memcpy(&saved_mode[b], SDL_xbiosmode[i][j], sizeof(xbiosmode_t));
SDL_modelist[i][j]->w = modeinfo->width;
SDL_modelist[i][j]->h = modeinfo->height;
SDL_memcpy(SDL_xbiosmode[i][j], modeinfo, sizeof(xbiosmode_t));
/* Everybody scoot down! */
if ( saved_rect[b].w && saved_rect[b].h ) {
for ( ++j; SDL_modelist[i][j]->w; ++j ) {
saved_rect[!b] = *SDL_modelist[i][j];
memcpy(&saved_mode[!b], SDL_xbiosmode[i][j], sizeof(xbiosmode_t));
*SDL_modelist[i][j] = saved_rect[b];
SDL_memcpy(SDL_xbiosmode[i][j], &saved_mode[b], sizeof(xbiosmode_t));
b = !b;
}
*SDL_modelist[i][j] = saved_rect[b];
SDL_memcpy(SDL_xbiosmode[i][j], &saved_mode[b], sizeof(xbiosmode_t));
}
} else {
++SDL_nummodes[i];
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}
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}
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static void XBIOS_ListSTModes(_THIS, int actually_add)
{
SDL_XBIOS_AddMode(this, actually_add, &stmodes[0]);
}
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static void XBIOS_ListTTModes(_THIS, int actually_add)
{
int i;
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for (i=0; i<2; i++) {
SDL_XBIOS_AddMode(this, actually_add, &ttmodes[i]);
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}
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}
static void XBIOS_ListFalconRgbModes(_THIS, int actually_add)
{
int i;
for (i=0; i<16; i++) {
xbiosmode_t modeinfo;
SDL_memcpy(&modeinfo, &falconrgbmodes[i], sizeof(xbiosmode_t));
modeinfo.number &= ~(VGA|PAL);
modeinfo.number |= XBIOS_oldvmode & (VGA|PAL);
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SDL_XBIOS_AddMode(this, actually_add, &modeinfo);
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}
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}
static void XBIOS_ListFalconVgaModes(_THIS, int actually_add)
{
int i;
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for (i=0; i<6; i++) {
xbiosmode_t modeinfo;
SDL_memcpy(&modeinfo, &falconvgamodes[i], sizeof(xbiosmode_t));
modeinfo.number &= ~(VGA|PAL);
modeinfo.number |= XBIOS_oldvmode & (VGA|PAL);
SDL_XBIOS_AddMode(this, actually_add, &modeinfo);
}
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}
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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 */
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for ( i=0; i<NUM_MODELISTS; ++i ) {
SDL_nummodes[i] = 0;
SDL_modelist[i] = NULL;
SDL_xbiosmode[i] = NULL;
}
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/* 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_centscreen = SDL_FALSE;
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XBIOS_oldvbase = Physbase();
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/* Determine the current screen size */
this->info.current_w = 0;
this->info.current_h = 0;
/* Determine the screen depth (use default 8-bit depth) */
vformat->BitsPerPixel = 8;
/* First allocate room for needed video modes */
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switch (XBIOS_cvdo >>16) {
case VDO_ST:
case VDO_STE:
{
short *oldpalette;
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;
}
oldpalette= (short *) XBIOS_oldpalette;
for (i=0;i<XBIOS_oldnumcol;i++) {
*oldpalette++=Setcolor(i,-1);
}
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XBIOS_ListSTModes(this, 0);
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}
break;
case VDO_TT:
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;
}
if (XBIOS_oldnumcol) {
EgetPalette(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
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XBIOS_ListTTModes(this, 0);
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break;
case VDO_F30:
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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;
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/* ScreenBlaster 3 ? */
if (Getcookie(C_SCPN, &cookie_scpn) == C_FOUND) {
SDL_XBIOS_ListSB3Modes(this, 0, (scpn_cookie_t *)cookie_scpn);
} else
/* Centscreen ? */
if (Getcookie(C_CNTS, &cookie_cnts) == C_FOUND) {
XBIOS_oldvmode = SDL_XBIOS_ListCentscreenModes(this, 0);
XBIOS_centscreen = SDL_TRUE;
} else
/* Standard, with or without Blowup */
{
switch (VgetMonitor())
{
case MONITOR_RGB:
case MONITOR_TV:
XBIOS_ListFalconRgbModes(this, 0);
break;
case MONITOR_VGA:
XBIOS_ListFalconVgaModes(this, 0);
break;
}
if (Getcookie(C_BLOW, &cookie_blow) == C_FOUND) {
SDL_XBIOS_ListBlowupModes(this, 0, (blow_cookie_t *)cookie_blow);
}
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}
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break;
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case VDO_MILAN:
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{
SCREENINFO si;
/* Read infos about current mode */
VsetScreen(-1, &XBIOS_oldvmode, MI_MAGIC, CMD_GETMODE);
si.size = sizeof(SCREENINFO);
si.devID = XBIOS_oldvmode;
si.scrFlags = 0;
VsetScreen(-1, &si, MI_MAGIC, CMD_GETINFO);
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this->info.current_w = si.scrWidth;
this->info.current_h = si.scrHeight;
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XBIOS_oldnumcol = 0;
if (si.scrFlags & SCRINFO_OK) {
if (si.scrPlanes <= 8) {
XBIOS_oldnumcol = 1<<si.scrPlanes;
}
}
if (XBIOS_oldnumcol) {
VgetRGB(0, XBIOS_oldnumcol, XBIOS_oldpalette);
}
SDL_XBIOS_ListMilanModes(this, 0);
}
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break;
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}
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for ( i=0; i<NUM_MODELISTS; ++i ) {
int j;
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SDL_xbiosmode[i] = (xbiosmode_t **)
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SDL_malloc((SDL_nummodes[i]+1)*sizeof(xbiosmode_t *));
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if ( SDL_xbiosmode[i] == NULL ) {
SDL_OutOfMemory();
return(-1);
}
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for ( j=0; j<SDL_nummodes[i]; ++j ) {
SDL_xbiosmode[i][j]=(xbiosmode_t *)SDL_malloc(sizeof(xbiosmode_t));
if ( SDL_xbiosmode[i][j] == NULL ) {
SDL_OutOfMemory();
return(-1);
}
SDL_memset(SDL_xbiosmode[i][j], 0, sizeof(xbiosmode_t));
}
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SDL_xbiosmode[i][j] = NULL;
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SDL_modelist[i] = (SDL_Rect **)
SDL_malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *));
if ( SDL_modelist[i] == NULL ) {
SDL_OutOfMemory();
return(-1);
}
for ( j=0; j<SDL_nummodes[i]; ++j ) {
SDL_modelist[i][j]=(SDL_Rect *)SDL_malloc(sizeof(SDL_Rect));
if ( SDL_modelist[i][j] == NULL ) {
SDL_OutOfMemory();
return(-1);
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}
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SDL_memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect));
}
SDL_modelist[i][j] = NULL;
}
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/* Now fill the mode list */
switch (XBIOS_cvdo >>16) {
case VDO_ST:
case VDO_STE:
XBIOS_ListSTModes(this, 1);
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break;
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case VDO_TT:
XBIOS_ListTTModes(this, 1);
break;
case VDO_F30:
/* ScreenBlaster 3 ? */
if (Getcookie(C_SCPN, &cookie_scpn) == C_FOUND) {
SDL_XBIOS_ListSB3Modes(this, 1, (scpn_cookie_t *)cookie_scpn);
} else
/* Centscreen ? */
if (Getcookie(C_CNTS, &cookie_cnts) == C_FOUND) {
XBIOS_oldvmode = SDL_XBIOS_ListCentscreenModes(this, 1);
XBIOS_centscreen = SDL_TRUE;
} else
/* Standard, with or without Blowup */
{
switch (VgetMonitor())
{
case MONITOR_RGB:
case MONITOR_TV:
XBIOS_ListFalconRgbModes(this, 1);
break;
case MONITOR_VGA:
XBIOS_ListFalconVgaModes(this, 1);
break;
}
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if (Getcookie(C_BLOW, &cookie_blow) == C_FOUND) {
SDL_XBIOS_ListBlowupModes(this, 1, (blow_cookie_t *)cookie_blow);
}
}
break;
595
596
597
case VDO_MILAN:
SDL_XBIOS_ListMilanModes(this, 1);
break;
598
}
599
600
601
602
603
604
605
606
607
608
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 */
609
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
610
611
#if SDL_VIDEO_OPENGL
612
613
614
SDL_AtariGL_InitPointers(this);
#endif
615
616
617
618
619
/* Disable screensavers */
if (SDL_XBIOS_TveillePresent(this)) {
SDL_XBIOS_TveilleDisable(this);
}
620
621
622
623
624
625
/* We're done! */
return(0);
}
static SDL_Rect **XBIOS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
626
return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
627
628
629
630
631
632
633
634
}
static void XBIOS_FreeBuffers(_THIS)
{
int i;
for (i=0;i<2;i++) {
if (XBIOS_screensmem[i]!=NULL) {
635
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
636
637
638
639
640
641
if (i==1) {
VsetScreen(-1, -1, MI_MAGIC, CMD_FREEPAGE);
}
} else {
Mfree(XBIOS_screensmem[i]);
}
642
643
644
645
646
647
648
649
650
651
652
653
654
655
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;
656
int i, num_buffers;
657
658
659
660
661
662
663
xbiosmode_t *new_video_mode;
Uint32 new_screen_size;
Uint32 modeflags;
/* Free current buffers */
XBIOS_FreeBuffers(this);
664
665
/* Try to set the requested linear video mode */
bpp = (bpp+7)/8-1;
666
667
668
669
670
671
672
673
674
675
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);
}
676
new_video_mode = SDL_xbiosmode[bpp][mode];
677
678
modeflags = SDL_FULLSCREEN | SDL_PREALLOC;
679
680
681
682
/* Allocate needed buffers: simple/double buffer and shadow surface */
new_depth = new_video_mode->depth;
if (new_depth == 4) {
683
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert4;
684
new_depth=8;
685
modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
686
} else if (new_depth == 8) {
687
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
688
modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
689
690
691
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693
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695
} else {
modeflags |= SDL_HWSURFACE;
}
new_screen_size = width * height * ((new_depth)>>3);
new_screen_size += 256; /* To align on a 256 byte adress */
696
if (new_video_mode->flags & XBIOSMODE_C2P) {
697
698
699
XBIOS_shadowscreen = Atari_SysMalloc(new_screen_size, MX_PREFTTRAM);
if (XBIOS_shadowscreen == NULL) {
700
SDL_SetError("Can not allocate %d KB for shadow buffer", new_screen_size>>10);
701
702
return (NULL);
}
703
SDL_memset(XBIOS_shadowscreen, 0, new_screen_size);
704
705
706
}
/* Output buffer needs to be twice in size for the software double-line mode */
707
if (new_video_mode->flags & XBIOSMODE_DOUBLELINE) {
708
709
710
new_screen_size <<= 1;
}
711
712
/* Double buffer ? */
num_buffers = 1;
713
714
#if SDL_VIDEO_OPENGL
715
716
717
718
719
720
if (flags & SDL_OPENGL) {
if (this->gl_config.double_buffer) {
flags |= SDL_DOUBLEBUF;
}
}
#endif
721
if ((flags & SDL_DOUBLEBUF) && ((XBIOS_cvdo>>16) != VDO_MILAN)) {
722
723
724
725
726
727
num_buffers = 2;
modeflags |= SDL_DOUBLEBUF;
}
/* Allocate buffers */
for (i=0; i<num_buffers; i++) {
728
729
730
731
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
if (i==0) {
XBIOS_screensmem[i] = XBIOS_oldvbase;
} else {
732
VsetScreen(-1, &XBIOS_screensmem[i], MI_MAGIC, CMD_ALLOCPAGE);
733
734
735
736
}
} else {
XBIOS_screensmem[i] = Atari_SysMalloc(new_screen_size, MX_STRAM);
}
737
738
if (XBIOS_screensmem[i]==NULL) {
739
XBIOS_FreeBuffers(this);
740
SDL_SetError("Can not allocate %d KB for buffer %d", new_screen_size>>10, i);
741
742
return (NULL);
}
743
SDL_memset(XBIOS_screensmem[i], 0, new_screen_size);
744
745
XBIOS_screens[i]=(void *) (( (long) XBIOS_screensmem[i]+256) & 0xFFFFFF00UL);
746
}
747
748
749
750
751
752
753
754
/* 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);
}
755
756
757
XBIOS_current = new_video_mode;
current->w = width;
current->h = height;
758
759
760
761
762
current->pitch = (width * new_depth)>>3;
/* this is for C2P conversion */
XBIOS_pitch = (new_video_mode->width * new_video_mode->depth)>>3;
763
if (new_video_mode->flags & XBIOSMODE_C2P)
764
765
766
767
768
769
current->pixels = XBIOS_shadowscreen;
else
current->pixels = XBIOS_screens[0];
XBIOS_fbnum = 0;
770
#if SDL_VIDEO_OPENGL
771
if (flags & SDL_OPENGL) {
772
if (!SDL_AtariGL_Init(this, current)) {
773
XBIOS_FreeBuffers(this);
774
775
SDL_SetError("Can not create OpenGL context");
return NULL;
776
777
778
779
780
781
782
783
}
modeflags |= SDL_OPENGL;
}
#endif
current->flags = modeflags;
784
#ifndef DEBUG_VIDEO_XBIOS
785
/* Now set the video mode */
786
787
788
789
790
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[0], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[0],-1);
}
791
792
793
794
switch(XBIOS_cvdo >> 16) {
case VDO_ST:
Setscreen(-1,-1,new_video_mode->number);
795
796
797
/* Reset palette */
for (i=0;i<16;i++) {
798
TT_palette[i]= ((i>>1)<<8) | (((i*8)/17)<<4) | (i>>1);
799
800
801
802
803
}
Setpalette(TT_palette);
break;
case VDO_STE:
Setscreen(-1,-1,new_video_mode->number);
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
/* 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;
}
Setpalette(TT_palette);
break;
case VDO_TT:
EsetShift(new_video_mode->number);
break;
case VDO_F30:
819
820
821
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenSetmode(this, width, height, new_depth);
} else {
822
VsetMode(new_video_mode->number);
823
}
824
825
/* Set hardware palette to black in True Colour */
826
827
828
829
830
831
if (new_depth > 8) {
SDL_memset(F30_palette, 0, sizeof(F30_palette));
VsetRGB(0,256,F30_palette);
}
break;
case VDO_MILAN:
832
833
VsetScreen(-1, new_video_mode->number, MI_MAGIC, CMD_SETMODE);
834
835
/* Set hardware palette to black in True Colour */
if (new_depth > 8) {
836
SDL_memset(F30_palette, 0, sizeof(F30_palette));
837
838
VsetRGB(0,256,F30_palette);
}
839
840
841
842
break;
}
Vsync();
843
#endif
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
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;
874
875
876
surface = this->screen;
877
if (XBIOS_current->flags & XBIOSMODE_C2P) {
878
int i;
879
int doubleline = (XBIOS_current->flags & XBIOSMODE_DOUBLELINE ? 1 : 0);
880
881
882
883
884
885
for (i=0;i<numrects;i++) {
void *source,*destination;
int x1,x2;
x1 = rects[i].x & ~15;
886
887
888
889
x2 = rects[i].x+rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) +1;
}
890
891
892
893
894
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
895
destination = XBIOS_screens[XBIOS_fbnum];
896
897
898
899
destination += XBIOS_pitch * rects[i].y;
destination += x1;
/* Convert chunky to planar screen */
900
SDL_Atari_C2pConvert(
901
902
903
904
source,
destination,
x2-x1,
rects[i].h,
905
doubleline,
906
907
surface->pitch,
XBIOS_pitch
908
909
910
911
);
}
}
912
#ifndef DEBUG_VIDEO_XBIOS
913
914
915
916
917
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[XBIOS_fbnum], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
}
918
919
Vsync();
920
#endif
921
922
923
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
XBIOS_fbnum ^= 1;
924
if ((XBIOS_current->flags & XBIOSMODE_C2P) == 0) {
925
926
927
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
}
928
929
930
931
}
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
{
932
if (XBIOS_current->flags & XBIOSMODE_C2P) {
933
934
void *destscr;
int destx;
935
int doubleline = (XBIOS_current->flags & XBIOSMODE_DOUBLELINE ? 1 : 0);
936
937
938
/* Center on destination screen */
destscr = XBIOS_screens[XBIOS_fbnum];
939
940
destscr += XBIOS_pitch * ((XBIOS_current->height - surface->h) >> 1);
destx = (XBIOS_current->width - surface->w) >> 1;
941
942
943
destx &= ~15;
destscr += destx;
944
/* Convert chunky to planar screen */
945
SDL_Atari_C2pConvert(
946
947
948
949
surface->pixels,
destscr,
surface->w,
surface->h,
950
doubleline,
951
952
surface->pitch,
XBIOS_pitch
953
954
955
);
}
956
#ifndef DEBUG_VIDEO_XBIOS
957
958
959
960
961
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[XBIOS_fbnum], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
}
962
963
Vsync();
964
#endif
965
966
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
967
XBIOS_fbnum ^= 1;
968
if ((XBIOS_current->flags & XBIOSMODE_C2P) == 0) {
969
970
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
971
972
973
974
975
976
977
}
return(0);
}
static int XBIOS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
{
978
#ifndef DEBUG_VIDEO_XBIOS
979
980
981
982
983
984
985
986
987
988
989
990
991
992
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;
}
993
SDL_Atari_C2pConvert4_pal(TT_palette); /* convert the lighting */
994
995
996
997
998
999
1000
break;
case VDO_TT:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;