/
SDL_xbios.c
1105 lines (946 loc) · 26.1 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2009 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
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
13
Lesser General Public License for more details.
15
16
17
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
18
19
20
21
Sam Lantinga
slouken@libsdl.org
*/
22
#include "SDL_config.h"
23
24
25
26
27
28
29
30
31
32
33
/*
* Xbios SDL video driver
*
* Patrice Mandin
*/
#include <sys/stat.h>
#include <unistd.h>
/* Mint includes */
34
#include <mint/cookie.h>
35
36
37
38
39
#include <mint/osbind.h>
#include <mint/falcon.h>
#include "SDL_video.h"
#include "SDL_mouse.h"
40
41
42
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
44
45
46
47
#include "../ataricommon/SDL_ataric2p_s.h"
#include "../ataricommon/SDL_atarievents_c.h"
#include "../ataricommon/SDL_atarimxalloc_c.h"
#include "../ataricommon/SDL_atarigl_c.h"
48
#include "SDL_xbios.h"
49
#include "SDL_xbios_blowup.h"
50
#include "SDL_xbios_centscreen.h"
51
#include "SDL_xbios_sb3.h"
52
#include "SDL_xbios_tveille.h"
53
#include "SDL_xbios_milan.h"
54
55
56
#define XBIOS_VID_DRIVER_NAME "xbios"
57
58
59
60
#ifndef C_fVDI
#define C_fVDI 0x66564449L
#endif
61
/* Debug print info */
62
#if 0
63
64
65
66
#define DEBUG_PRINT(what) \
{ \
printf what; \
}
67
#define DEBUG_VIDEO_XBIOS 1
68
69
70
71
#else
#define DEBUG_PRINT(what)
#undef DEBUG_VIDEO_XBIOS
#endif
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
/* 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);
88
#if SDL_VIDEO_OPENGL
89
90
91
92
/* OpenGL functions */
static void XBIOS_GL_SwapBuffers(_THIS);
#endif
93
94
95
96
97
/* To setup palette */
static unsigned short TT_palette[256];
static unsigned long F30_palette[256];
98
99
100
/* Default list of video modes */
static const xbiosmode_t stmodes[1]={
101
{ST_LOW>>8,320,200,4, XBIOSMODE_C2P}
102
103
104
};
static const xbiosmode_t ttmodes[2]={
105
106
{TT_LOW,320,480,8, XBIOSMODE_C2P},
{TT_LOW,320,240,8, XBIOSMODE_C2P|XBIOSMODE_DOUBLELINE}
107
108
109
};
static const xbiosmode_t falconrgbmodes[16]={
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
{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}
126
127
128
};
static const xbiosmode_t falconvgamodes[6]={
129
130
131
132
133
134
{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}
137
138
139
140
/* Xbios driver bootstrap functions */
static int XBIOS_Available(void)
{
141
unsigned long cookie_vdo, cookie_mil, cookie_hade, cookie_scpn;
142
143
unsigned long cookie_fvdi;
const char *envr = SDL_getenv("SDL_VIDEODRIVER");
144
145
/* Milan/Hades Atari clones do not have an Atari video chip */
146
if ( /*(Getcookie(C__MIL, &cookie_mil) == C_FOUND) ||*/
147
148
149
(Getcookie(C_hade, &cookie_hade) == C_FOUND) ) {
return 0;
}
151
152
153
154
155
156
157
158
159
160
161
/* 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 */
}
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/* 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:
179
if ( VgetMonitor() == MONITOR_MONO)
180
return 0;
181
182
183
184
185
if (Getcookie(C_SCPN, &cookie_scpn) == C_FOUND) {
if (!SDL_XBIOS_SB3Usable((scpn_cookie_t *)cookie_scpn)) {
return 0;
}
}
187
188
case VDO_MILAN:
break;
189
190
191
192
193
194
195
196
197
default:
return 0;
}
return 1;
}
static void XBIOS_DeleteDevice(SDL_VideoDevice *device)
{
198
199
SDL_free(device->hidden);
SDL_free(device);
200
201
202
203
204
205
206
}
static SDL_VideoDevice *XBIOS_CreateDevice(int devindex)
{
SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
207
device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
208
if ( device ) {
209
SDL_memset(device, 0, (sizeof *device));
210
device->hidden = (struct SDL_PrivateVideoData *)
211
SDL_malloc((sizeof *device->hidden));
212
device->gl_data = (struct SDL_PrivateGLData *)
213
SDL_malloc((sizeof *device->gl_data));
214
215
216
217
}
if ( (device == NULL) || (device->hidden == NULL) ) {
SDL_OutOfMemory();
if ( device ) {
218
SDL_free(device);
219
220
221
}
return(0);
}
222
223
SDL_memset(device->hidden, 0, (sizeof *device->hidden));
SDL_memset(device->gl_data, 0, sizeof(*device->gl_data));
224
225
226
227
228
229
230
231
232
233
234
235
236
237
/* 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;
238
#if SDL_VIDEO_OPENGL
239
/* OpenGL functions */
240
241
242
243
device->GL_LoadLibrary = SDL_AtariGL_LoadLibrary;
device->GL_GetProcAddress = SDL_AtariGL_GetProcAddress;
device->GL_GetAttribute = SDL_AtariGL_GetAttribute;
device->GL_MakeCurrent = SDL_AtariGL_MakeCurrent;
244
245
246
device->GL_SwapBuffers = XBIOS_GL_SwapBuffers;
#endif
247
248
249
250
251
252
253
254
255
256
257
258
259
260
/* 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
};
261
void SDL_XBIOS_AddMode(_THIS, int actually_add, const xbiosmode_t *modeinfo)
263
264
265
266
267
268
269
270
271
272
273
274
275
276
int i = 0;
switch(modeinfo->depth) {
case 15:
case 16:
i = 1;
break;
case 24:
i = 2;
break;
case 32:
i = 3;
break;
}
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
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) ) {
293
294
return;
}
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
/* 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];
318
319
320
321
static void XBIOS_ListSTModes(_THIS, int actually_add)
{
SDL_XBIOS_AddMode(this, actually_add, &stmodes[0]);
}
323
324
325
static void XBIOS_ListTTModes(_THIS, int actually_add)
{
int i;
327
328
for (i=0; i<2; i++) {
SDL_XBIOS_AddMode(this, actually_add, &ttmodes[i]);
330
331
332
333
334
335
336
337
338
339
340
341
}
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);
343
SDL_XBIOS_AddMode(this, actually_add, &modeinfo);
345
346
347
348
349
}
static void XBIOS_ListFalconVgaModes(_THIS, int actually_add)
{
int i;
351
352
353
354
355
356
357
358
359
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);
}
362
363
364
365
static int XBIOS_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
int i,j8,j16;
xbiosmode_t *current_mode;
366
unsigned long cookie_blow, cookie_scpn, cookie_cnts;
367
368
/* Initialize all variables that we clean on shutdown */
369
370
371
372
373
for ( i=0; i<NUM_MODELISTS; ++i ) {
SDL_nummodes[i] = 0;
SDL_modelist[i] = NULL;
SDL_xbiosmode[i] = NULL;
}
374
375
376
377
378
379
380
/* 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 */
381
XBIOS_oldpalette = (void *)SDL_malloc(256*sizeof(long));
382
383
384
385
386
387
388
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) */
389
XBIOS_centscreen = SDL_FALSE;
390
XBIOS_oldvbase = Physbase();
392
393
394
395
396
397
398
399
/* 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 */
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
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);
}
424
XBIOS_ListSTModes(this, 0);
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
}
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);
}
450
XBIOS_ListTTModes(this, 0);
451
452
break;
case VDO_F30:
453
XBIOS_oldvmode=VsetMode(-1);
454
455
456
457
458
459
460
461
462
463
464
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;
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
/* 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);
}
492
case VDO_MILAN:
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
{
SCREENINFO si;
/* Read infos about current mode */
VsetScreen(-1, &XBIOS_oldvmode, MI_MAGIC, CMD_GETMODE);
this->info.current_w = si.scrWidth;
this->info.current_h = si.scrHeight;
si.size = sizeof(SCREENINFO);
si.devID = XBIOS_oldvmode;
si.scrFlags = 0;
VsetScreen(-1, &si, MI_MAGIC, CMD_GETINFO);
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);
}
518
break;
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
for ( i=0; i<NUM_MODELISTS; ++i ) {
int j;
SDL_xbiosmode[i] = (xbiosmode_t **)SDL_malloc(SDL_nummodes[i]*sizeof(xbiosmode_t));
if ( SDL_xbiosmode[i] == NULL ) {
SDL_OutOfMemory();
return(-1);
}
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);
541
542
543
544
SDL_memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect));
}
SDL_modelist[i][j] = NULL;
}
546
547
548
549
550
/* Now fill the mode list */
switch (XBIOS_cvdo >>16) {
case VDO_ST:
case VDO_STE:
XBIOS_ListSTModes(this, 1);
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
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;
}
578
579
580
581
582
if (Getcookie(C_BLOW, &cookie_blow) == C_FOUND) {
SDL_XBIOS_ListBlowupModes(this, 1, (blow_cookie_t *)cookie_blow);
}
}
break;
583
584
585
case VDO_MILAN:
SDL_XBIOS_ListMilanModes(this, 1);
break;
587
588
589
590
591
592
593
594
595
596
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 */
597
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
599
#if SDL_VIDEO_OPENGL
600
601
602
SDL_AtariGL_InitPointers(this);
#endif
603
604
605
606
607
/* Disable screensavers */
if (SDL_XBIOS_TveillePresent(this)) {
SDL_XBIOS_TveilleDisable(this);
}
608
609
610
611
612
613
/* We're done! */
return(0);
}
static SDL_Rect **XBIOS_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
614
return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]);
615
616
617
618
619
620
621
622
}
static void XBIOS_FreeBuffers(_THIS)
{
int i;
for (i=0;i<2;i++) {
if (XBIOS_screensmem[i]!=NULL) {
623
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
624
625
626
627
628
629
if (i==1) {
VsetScreen(-1, -1, MI_MAGIC, CMD_FREEPAGE);
}
} else {
Mfree(XBIOS_screensmem[i]);
}
630
631
632
633
634
635
636
637
638
639
640
641
642
643
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;
644
int i, num_buffers;
645
646
647
648
649
650
651
xbiosmode_t *new_video_mode;
Uint32 new_screen_size;
Uint32 modeflags;
/* Free current buffers */
XBIOS_FreeBuffers(this);
652
653
/* Try to set the requested linear video mode */
bpp = (bpp+7)/8-1;
654
655
656
657
658
659
660
661
662
663
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);
}
664
new_video_mode = SDL_xbiosmode[bpp][mode];
666
modeflags = SDL_FULLSCREEN | SDL_PREALLOC;
667
668
669
670
/* Allocate needed buffers: simple/double buffer and shadow surface */
new_depth = new_video_mode->depth;
if (new_depth == 4) {
671
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert4;
672
new_depth=8;
673
modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
674
} else if (new_depth == 8) {
675
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
676
modeflags |= SDL_SWSURFACE|SDL_HWPALETTE;
677
678
679
680
681
682
683
} else {
modeflags |= SDL_HWSURFACE;
}
new_screen_size = width * height * ((new_depth)>>3);
new_screen_size += 256; /* To align on a 256 byte adress */
684
if (new_video_mode->flags & XBIOSMODE_C2P) {
685
686
687
XBIOS_shadowscreen = Atari_SysMalloc(new_screen_size, MX_PREFTTRAM);
if (XBIOS_shadowscreen == NULL) {
688
SDL_SetError("Can not allocate %d KB for shadow buffer", new_screen_size>>10);
689
690
return (NULL);
}
691
SDL_memset(XBIOS_shadowscreen, 0, new_screen_size);
692
693
694
}
/* Output buffer needs to be twice in size for the software double-line mode */
695
if (new_video_mode->flags & XBIOSMODE_DOUBLELINE) {
696
697
698
new_screen_size <<= 1;
}
699
700
/* Double buffer ? */
num_buffers = 1;
702
#if SDL_VIDEO_OPENGL
703
704
705
706
707
708
if (flags & SDL_OPENGL) {
if (this->gl_config.double_buffer) {
flags |= SDL_DOUBLEBUF;
}
}
#endif
709
if (flags & SDL_DOUBLEBUF) {
710
711
712
713
714
715
num_buffers = 2;
modeflags |= SDL_DOUBLEBUF;
}
/* Allocate buffers */
for (i=0; i<num_buffers; i++) {
716
717
718
719
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
if (i==0) {
XBIOS_screensmem[i] = XBIOS_oldvbase;
} else {
720
VsetScreen(-1, &XBIOS_screensmem[i], MI_MAGIC, CMD_ALLOCPAGE);
721
722
723
724
}
} else {
XBIOS_screensmem[i] = Atari_SysMalloc(new_screen_size, MX_STRAM);
}
726
if (XBIOS_screensmem[i]==NULL) {
727
XBIOS_FreeBuffers(this);
728
SDL_SetError("Can not allocate %d KB for buffer %d", new_screen_size>>10, i);
729
730
return (NULL);
}
731
SDL_memset(XBIOS_screensmem[i], 0, new_screen_size);
733
XBIOS_screens[i]=(void *) (( (long) XBIOS_screensmem[i]+256) & 0xFFFFFF00UL);
736
737
738
739
740
741
742
/* 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);
}
743
744
745
XBIOS_current = new_video_mode;
current->w = width;
current->h = height;
746
747
748
749
750
current->pitch = (width * new_depth)>>3;
/* this is for C2P conversion */
XBIOS_pitch = (new_video_mode->width * new_video_mode->depth)>>3;
751
if (new_video_mode->flags & XBIOSMODE_C2P)
752
753
754
755
756
757
current->pixels = XBIOS_shadowscreen;
else
current->pixels = XBIOS_screens[0];
XBIOS_fbnum = 0;
758
#if SDL_VIDEO_OPENGL
759
if (flags & SDL_OPENGL) {
760
if (!SDL_AtariGL_Init(this, current)) {
761
XBIOS_FreeBuffers(this);
762
763
SDL_SetError("Can not create OpenGL context");
return NULL;
764
765
766
767
768
769
770
771
}
modeflags |= SDL_OPENGL;
}
#endif
current->flags = modeflags;
772
#ifndef DEBUG_VIDEO_XBIOS
773
/* Now set the video mode */
774
775
776
777
778
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[0], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[0],-1);
}
779
780
781
782
switch(XBIOS_cvdo >> 16) {
case VDO_ST:
Setscreen(-1,-1,new_video_mode->number);
784
785
/* Reset palette */
for (i=0;i<16;i++) {
786
TT_palette[i]= ((i>>1)<<8) | (((i*8)/17)<<4) | (i>>1);
787
788
789
790
791
}
Setpalette(TT_palette);
break;
case VDO_STE:
Setscreen(-1,-1,new_video_mode->number);
793
794
795
796
797
798
799
800
801
802
803
804
805
806
/* 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:
807
808
809
if (XBIOS_centscreen) {
SDL_XBIOS_CentscreenSetmode(this, width, height, new_depth);
} else {
810
VsetMode(new_video_mode->number);
813
/* Set hardware palette to black in True Colour */
814
815
816
817
818
819
if (new_depth > 8) {
SDL_memset(F30_palette, 0, sizeof(F30_palette));
VsetRGB(0,256,F30_palette);
}
break;
case VDO_MILAN:
820
821
VsetScreen(-1, new_video_mode->number, MI_MAGIC, CMD_SETMODE);
822
823
/* Set hardware palette to black in True Colour */
if (new_depth > 8) {
824
SDL_memset(F30_palette, 0, sizeof(F30_palette));
825
826
VsetRGB(0,256,F30_palette);
}
827
828
829
830
break;
}
Vsync();
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
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;
863
864
surface = this->screen;
865
if (XBIOS_current->flags & XBIOSMODE_C2P) {
866
int i;
867
int doubleline = (XBIOS_current->flags & XBIOSMODE_DOUBLELINE ? 1 : 0);
868
869
870
871
872
873
for (i=0;i<numrects;i++) {
void *source,*destination;
int x1,x2;
x1 = rects[i].x & ~15;
874
875
876
877
x2 = rects[i].x+rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) +1;
}
878
879
880
881
882
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
883
destination = XBIOS_screens[XBIOS_fbnum];
884
885
886
887
destination += XBIOS_pitch * rects[i].y;
destination += x1;
/* Convert chunky to planar screen */
888
SDL_Atari_C2pConvert(
889
890
891
892
source,
destination,
x2-x1,
rects[i].h,
894
895
surface->pitch,
XBIOS_pitch
896
897
898
899
);
}
}
900
#ifndef DEBUG_VIDEO_XBIOS
901
902
903
904
905
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[XBIOS_fbnum], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
}
907
Vsync();
909
910
911
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
XBIOS_fbnum ^= 1;
912
if ((XBIOS_current->flags & XBIOSMODE_C2P) == 0) {
913
914
915
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
}
916
917
918
919
}
static int XBIOS_FlipHWSurface(_THIS, SDL_Surface *surface)
{
920
if (XBIOS_current->flags & XBIOSMODE_C2P) {
921
922
void *destscr;
int destx;
923
int doubleline = (XBIOS_current->flags & XBIOSMODE_DOUBLELINE ? 1 : 0);
924
925
926
/* Center on destination screen */
destscr = XBIOS_screens[XBIOS_fbnum];
927
928
destscr += XBIOS_pitch * ((XBIOS_current->height - surface->h) >> 1);
destx = (XBIOS_current->width - surface->w) >> 1;
929
930
931
destx &= ~15;
destscr += destx;
932
/* Convert chunky to planar screen */
933
SDL_Atari_C2pConvert(
934
935
936
937
surface->pixels,
destscr,
surface->w,
surface->h,
939
940
surface->pitch,
XBIOS_pitch
941
942
943
);
}
944
#ifndef DEBUG_VIDEO_XBIOS
945
946
947
948
949
if ((XBIOS_cvdo>>16) == VDO_MILAN) {
VsetScreen(-1, XBIOS_screens[XBIOS_fbnum], MI_MAGIC, CMD_SETADR);
} else {
Setscreen(-1,XBIOS_screens[XBIOS_fbnum],-1);
}
953
954
if ((surface->flags & SDL_DOUBLEBUF) == SDL_DOUBLEBUF) {
955
XBIOS_fbnum ^= 1;
956
if ((XBIOS_current->flags & XBIOSMODE_C2P) == 0) {
957
958
surface->pixels=XBIOS_screens[XBIOS_fbnum];
}
959
960
961
962
963
964
965
}
return(0);
}
static int XBIOS_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
{
966
#ifndef DEBUG_VIDEO_XBIOS
967
968
969
970
971
972
973
974
975
976
977
978
979
980
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;
}
981
SDL_Atari_C2pConvert4_pal(TT_palette); /* convert the lighting */
982
983
984
985
986
987
988
989
break;
case VDO_TT:
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;
990
TT_palette[i]=((r>>4)<<8)|((v>>4)<<4)|(b>>4);
991
992
993
994
}
EsetPalette(firstcolor,ncolors,TT_palette);
break;
case VDO_F30:
995
case VDO_MILAN:
996
997
998
999
1000
for(i = 0; i < ncolors; i++)
{
r = colors[i].r;
v = colors[i].g;
b = colors[i].b;