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SDL_xbios.c
1116 lines (955 loc) · 26.3 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2012 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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long cookie_vdo, /*cookie_mil,*/ cookie_hade, cookie_scpn;
long cookie_fvdi;
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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)
{
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int i;
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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;
594
595
596
case VDO_MILAN:
SDL_XBIOS_ListMilanModes(this, 1);
break;
597
}
598
599
600
601
602
603
604
605
606
607
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 */
608
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
609
610
#if SDL_VIDEO_OPENGL
611
612
613
SDL_AtariGL_InitPointers(this);
#endif
614
615
616
617
618
/* Disable screensavers */
if (SDL_XBIOS_TveillePresent(this)) {
SDL_XBIOS_TveilleDisable(this);
}
619
620
621
622
623
624
/* We're done! */
return(0);
}
static SDL_Rect **XBIOS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
625
return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
626
627
628
629
630
631
632
633
}
static void XBIOS_FreeBuffers(_THIS)
{
int i;
for (i=0;i<2;i++) {
if (XBIOS_screensmem[i]!=NULL) {
634
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
635
636
637
638
639
640
if (i==1) {
VsetScreen(-1, -1, MI_MAGIC, CMD_FREEPAGE);
}
} else {
Mfree(XBIOS_screensmem[i]);
}
641
642
643
644
645
646
647
648
649
650
651
652
653
654
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;
655
int i, num_buffers;
656
657
658
659
660
661
662
xbiosmode_t *new_video_mode;
Uint32 new_screen_size;
Uint32 modeflags;
/* Free current buffers */
XBIOS_FreeBuffers(this);
663
664
/* Try to set the requested linear video mode */
bpp = (bpp+7)/8-1;
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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);
}
675
new_video_mode = SDL_xbiosmode[bpp][mode];
676
677
modeflags = SDL_FULLSCREEN | SDL_PREALLOC;
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680
681
/* Allocate needed buffers: simple/double buffer and shadow surface */
new_depth = new_video_mode->depth;
if (new_depth == 4) {
682
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert4;
683
new_depth=8;
684
modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
685
} else if (new_depth == 8) {
686
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
687
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 */
695
if (new_video_mode->flags & XBIOSMODE_C2P) {
696
697
698
XBIOS_shadowscreen = Atari_SysMalloc(new_screen_size, MX_PREFTTRAM);
if (XBIOS_shadowscreen == NULL) {
699
SDL_SetError("Can not allocate %d KB for shadow buffer", new_screen_size>>10);
700
701
return (NULL);
}
702
SDL_memset(XBIOS_shadowscreen, 0, new_screen_size);
703
704
705
}
/* Output buffer needs to be twice in size for the software double-line mode */
706
if (new_video_mode->flags & XBIOSMODE_DOUBLELINE) {
707
708
709
new_screen_size <<= 1;
}
710
711
/* Double buffer ? */
num_buffers = 1;
712
713
#if SDL_VIDEO_OPENGL
714
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719
if (flags & SDL_OPENGL) {
if (this->gl_config.double_buffer) {
flags |= SDL_DOUBLEBUF;
}
}
#endif
720
if ((flags & SDL_DOUBLEBUF) && ((XBIOS_cvdo>>16) != VDO_MILAN)) {
721
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723
724
725
726
num_buffers = 2;
modeflags |= SDL_DOUBLEBUF;
}
/* Allocate buffers */
for (i=0; i<num_buffers; i++) {
727
728
729
730
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
if (i==0) {
XBIOS_screensmem[i] = XBIOS_oldvbase;
} else {
731
VsetScreen(-1, &XBIOS_screensmem[i], MI_MAGIC, CMD_ALLOCPAGE);
732
733
734
735
}
} else {
XBIOS_screensmem[i] = Atari_SysMalloc(new_screen_size, MX_STRAM);
}
736
737
if (XBIOS_screensmem[i]==NULL) {
738
XBIOS_FreeBuffers(this);
739
SDL_SetError("Can not allocate %d KB for buffer %d", new_screen_size>>10, i);
740
741
return (NULL);
}
742
SDL_memset(XBIOS_screensmem[i], 0, new_screen_size);
743
744
XBIOS_screens[i]=(void *) (( (long) XBIOS_screensmem[i]+256) & 0xFFFFFF00UL);
745
}
746
747
748
749
750
751
752
753
/* 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);
}
754
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756
XBIOS_current = new_video_mode;
current->w = width;
current->h = height;
757
758
759
760
761
current->pitch = (width * new_depth)>>3;
/* this is for C2P conversion */
XBIOS_pitch = (new_video_mode->width * new_video_mode->depth)>>3;
762
if (new_video_mode->flags & XBIOSMODE_C2P)
763
764
765
766
767
768
current->pixels = XBIOS_shadowscreen;
else
current->pixels = XBIOS_screens[0];
XBIOS_fbnum = 0;
769
#if SDL_VIDEO_OPENGL
770
if (flags & SDL_OPENGL) {
771
if (!SDL_AtariGL_Init(this, current)) {
772
XBIOS_FreeBuffers(this);
773
774
SDL_SetError("Can not create OpenGL context");
return NULL;
775
776
777
778
779
780
781
782
}
modeflags |= SDL_OPENGL;
}
#endif
current->flags = modeflags;
783
#ifndef DEBUG_VIDEO_XBIOS
784
/* Now set the video mode */
785
786
787
788
789
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[0], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[0],-1);
}
790
791
792
793
switch(XBIOS_cvdo >> 16) {
case VDO_ST:
Setscreen(-1,-1,new_video_mode->number);
794
795
796
/* Reset palette */
for (i=0;i<16;i++) {
797
TT_palette[i]= ((i>>1)<<8) | (((i*8)/17)<<4) | (i>>1);
798
799
800
801
802
}
Setpalette(TT_palette);
break;
case VDO_STE:
Setscreen(-1,-1,new_video_mode->number);
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
/* 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:
818
819
820
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenSetmode(this, width, height, new_depth);
} else {
821
VsetMode(new_video_mode->number);
822
}
823
824
/* Set hardware palette to black in True Colour */
825
826
827
828
829
830
if (new_depth > 8) {
SDL_memset(F30_palette, 0, sizeof(F30_palette));
VsetRGB(0,256,F30_palette);
}
break;
case VDO_MILAN:
831
832
VsetScreen(-1, new_video_mode->number, MI_MAGIC, CMD_SETMODE);
833
834
/* Set hardware palette to black in True Colour */
if (new_depth > 8) {
835
SDL_memset(F30_palette, 0, sizeof(F30_palette));
836
837
VsetRGB(0,256,F30_palette);
}
838
839
840
841
break;
}
Vsync();
842
#endif
843
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
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;
873
874
875
surface = this->screen;
876
if (XBIOS_current->flags & XBIOSMODE_C2P) {
877
int i;
878
int doubleline = (XBIOS_current->flags & XBIOSMODE_DOUBLELINE ? 1 : 0);
879
880
881
882
883
884
for (i=0;i<numrects;i++) {
void *source,*destination;
int x1,x2;
x1 = rects[i].x & ~15;
885
886
887
888
x2 = rects[i].x+rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) +1;
}
889
890
891
892
893
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
894
destination = XBIOS_screens[XBIOS_fbnum];
895
896
897
898
destination += XBIOS_pitch * rects[i].y;
destination += x1;
/* Convert chunky to planar screen */
899
SDL_Atari_C2pConvert(
900
901
902
903
source,
destination,
x2-x1,
rects[i].h,
904
doubleline,
905
906
surface->pitch,
XBIOS_pitch
907
908
909
910
);
}
}
911
#ifndef DEBUG_VIDEO_XBIOS
912
913
914
915
916
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[XBIOS_fbnum], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
}
917
918
Vsync();
919
#endif
920
921
922
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
XBIOS_fbnum ^= 1;
923
if ((XBIOS_current->flags & XBIOSMODE_C2P) == 0) {
924
925
926
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
}
927
928
929
930
}
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
{
931
if (XBIOS_current->flags & XBIOSMODE_C2P) {
932
933
void *destscr;
int destx;
934
int doubleline = (XBIOS_current->flags & XBIOSMODE_DOUBLELINE ? 1 : 0);
935
936
937
/* Center on destination screen */
destscr = XBIOS_screens[XBIOS_fbnum];
938
939
destscr += XBIOS_pitch * ((XBIOS_current->height - surface->h) >> 1);
destx = (XBIOS_current->width - surface->w) >> 1;
940
941
942
destx &= ~15;
destscr += destx;
943
/* Convert chunky to planar screen */
944
SDL_Atari_C2pConvert(
945
946
947
948
surface->pixels,
destscr,
surface->w,
surface->h,
949
doubleline,
950
951
surface->pitch,
XBIOS_pitch
952
953
954
);
}
955
#ifndef DEBUG_VIDEO_XBIOS
956
957
958
959
960
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[XBIOS_fbnum], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
}
961
962
Vsync();
963
#endif
964
965
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
966
XBIOS_fbnum ^= 1;
967
if ((XBIOS_current->flags & XBIOSMODE_C2P) == 0) {
968
969
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
970
971
972
973
974
975
976
}
return(0);
}
static int XBIOS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
{
977
#ifndef DEBUG_VIDEO_XBIOS
978
979
980
981
982
983
984
985
986
987
988
989
990
991
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;
}
992
SDL_Atari_C2pConvert4_pal(TT_palette); /* convert the lighting */
993
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;