1 /*

     2     SDL - Simple DirectMedia Layer

     3     Copyright (C) 1997-2006 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     This library is distributed in the hope that it will be useful,

    11     but WITHOUT ANY WARRANTY; without even the implied warranty of

    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13     Lesser General Public License for more details.

    14 

    15     You should have received a copy of the GNU Lesser General Public

    16     License along with this library; if not, write to the Free Software

    17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    18 

    19     Sam Lantinga

    20     slouken@libsdl.org

    21 */

    22 #include "SDL_config.h"

    23 

    24 /*

    25 	GEM video driver

    26 

    27 	Patrice Mandin

    28 	and work from

    29 	Olivier Landemarre, Johan Klockars, Xavier Joubert, Claude Attard

    30 */

    31 

    32 /* Mint includes */

    33 #include <gem.h>

    34 #include <gemx.h>

    35 #include <mint/osbind.h>

    36 #include <mint/cookie.h>

    37 

    38 #include "SDL_endian.h"

    39 #include "SDL_video.h"

    40 #include "SDL_mouse.h"

    41 #include "../SDL_sysvideo.h"

    42 #include "../SDL_pixels_c.h"

    43 #include "../../events/SDL_events_c.h"

    44 #include "../SDL_cursor_c.h"

    45 

    46 #include "../ataricommon/SDL_ataric2p_s.h"

    47 #include "../ataricommon/SDL_atarieddi_s.h"

    48 #include "../ataricommon/SDL_atarimxalloc_c.h"

    49 #include "../ataricommon/SDL_atarigl_c.h"

    50 

    51 #include "SDL_gemvideo.h"

    52 #include "SDL_gemevents_c.h"

    53 #include "SDL_gemmouse_c.h"

    54 #include "SDL_gemwm_c.h"

    55 #include "../ataricommon/SDL_xbiosevents_c.h"

    56 #include "../ataricommon/SDL_ataridevmouse_c.h"

    57 

    58 /* Defines */

    59 

    60 /*#define DEBUG_VIDEO_GEM	1*/

    61 

    62 #define GEM_VID_DRIVER_NAME "gem"

    63 

    64 #undef MIN

    65 #define MIN(a,b) (((a)<(b)) ? (a) : (b))

    66 #undef MAX

    67 #define MAX(a,b) (((a)>(b)) ? (a) : (b))

    68 

    69 /* Variables */

    70 

    71 static unsigned char vdi_index[256] = {

    72 	0,  2,  3,  6,  4,  7,  5,   8,

    73 	9, 10, 11, 14, 12, 15, 13, 255

    74 };

    75 

    76 static const unsigned char empty_name[]="";

    77 

    78 /* Initialization/Query functions */

    79 static int GEM_VideoInit(_THIS, SDL_PixelFormat *vformat);

    80 static SDL_Rect **GEM_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);

    81 static SDL_Surface *GEM_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);

    82 static int GEM_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);

    83 static void GEM_VideoQuit(_THIS);

    84 

    85 /* Hardware surface functions */

    86 static int GEM_AllocHWSurface(_THIS, SDL_Surface *surface);

    87 static int GEM_LockHWSurface(_THIS, SDL_Surface *surface);

    88 static int GEM_FlipHWSurface(_THIS, SDL_Surface *surface);

    89 static void GEM_UnlockHWSurface(_THIS, SDL_Surface *surface);

    90 static void GEM_FreeHWSurface(_THIS, SDL_Surface *surface);

    91 static void GEM_UpdateRects(_THIS, int numrects, SDL_Rect *rects);

    92 #if 0

    93 static int GEM_ToggleFullScreen(_THIS, int on);

    94 #endif

    95 

    96 /* Internal functions */

    97 static void GEM_FreeBuffers(_THIS);

    98 static void GEM_ClearScreen(_THIS);

    99 static void GEM_ClearRect(_THIS, short *rect);

   100 static void GEM_SetNewPalette(_THIS, Uint16 newpal[256][3]);

   101 static void GEM_LockScreen(_THIS);

   102 static void GEM_UnlockScreen(_THIS);

   103 static void refresh_window(_THIS, int winhandle, short *rect);

   104 

   105 #if SDL_VIDEO_OPENGL

   106 /* OpenGL functions */

   107 static void GEM_GL_SwapBuffers(_THIS);

   108 #endif

   109 

   110 /* GEM driver bootstrap functions */

   111 

   112 static int GEM_Available(void)

   113 {

   114 	/* Test if AES available */

   115 	if (appl_init() == -1)

   116 		return 0;

   117 

   118 	appl_exit();

   119 	return 1;

   120 }

   121 

   122 static void GEM_DeleteDevice(SDL_VideoDevice *device)

   123 {

   124 	SDL_free(device->hidden);

   125 	SDL_free(device);

   126 }

   127 

   128 static SDL_VideoDevice *GEM_CreateDevice(int devindex)

   129 {

   130 	SDL_VideoDevice *device;

   131 	int vectors_mask;

   132 	unsigned long dummy;

   133 

   134 	/* Initialize all variables that we clean on shutdown */

   135 	device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));

   136 	if ( device ) {

   137 		SDL_memset(device, 0, (sizeof *device));

   138 		device->hidden = (struct SDL_PrivateVideoData *)

   139 				SDL_malloc((sizeof *device->hidden));

   140 		device->gl_data = (struct SDL_PrivateGLData *)

   141 				SDL_malloc((sizeof *device->gl_data));

   142 	}

   143 	if ( (device == NULL) || (device->hidden == NULL) ) {

   144 		SDL_OutOfMemory();

   145 		if ( device ) {

   146 			SDL_free(device);

   147 		}

   148 		return(0);

   149 	}

   150 	SDL_memset(device->hidden, 0, (sizeof *device->hidden));

   151 	SDL_memset(device->gl_data, 0, sizeof(*device->gl_data));

   152 

   153 	/* Set the function pointers */

   154 	device->VideoInit = GEM_VideoInit;

   155 	device->ListModes = GEM_ListModes;

   156 	device->SetVideoMode = GEM_SetVideoMode;

   157 	device->SetColors = GEM_SetColors;

   158 	device->UpdateRects = NULL /*GEM_UpdateRects*/;

   159 	device->VideoQuit = GEM_VideoQuit;

   160 	device->AllocHWSurface = GEM_AllocHWSurface;

   161 	device->LockHWSurface = GEM_LockHWSurface;

   162 	device->UnlockHWSurface = GEM_UnlockHWSurface;

   163 	device->FlipHWSurface = GEM_FlipHWSurface;

   164 	device->FreeHWSurface = GEM_FreeHWSurface;

   165 	device->ToggleFullScreen = NULL /*GEM_ToggleFullScreen*/;

   166 

   167 	/* Window manager */

   168 	device->SetCaption = GEM_SetCaption;

   169 	device->SetIcon = GEM_SetIcon;

   170 	device->IconifyWindow = GEM_IconifyWindow;

   171 	device->GrabInput = GEM_GrabInput;

   172 

   173 	/* Events */

   174 	device->InitOSKeymap = GEM_InitOSKeymap;

   175 	device->PumpEvents = GEM_PumpEvents;

   176 

   177 	/* Mouse */

   178 	device->FreeWMCursor = GEM_FreeWMCursor;

   179 	device->CreateWMCursor = GEM_CreateWMCursor;

   180 	device->ShowWMCursor = GEM_ShowWMCursor;

   181 	device->WarpWMCursor = NULL /*GEM_WarpWMCursor*/;

   182 	device->CheckMouseMode = GEM_CheckMouseMode;

   183 

   184 #if SDL_VIDEO_OPENGL

   185 	/* OpenGL functions */

   186 	device->GL_LoadLibrary = SDL_AtariGL_LoadLibrary;

   187 	device->GL_GetProcAddress = SDL_AtariGL_GetProcAddress;

   188 	device->GL_GetAttribute = SDL_AtariGL_GetAttribute;

   189 	device->GL_MakeCurrent = SDL_AtariGL_MakeCurrent;

   190 	device->GL_SwapBuffers = GEM_GL_SwapBuffers;

   191 #endif

   192 

   193 	device->hidden->use_dev_mouse =

   194 		(SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;

   195 

   196 	vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;	/* XBIOS joystick events */

   197 	if (!(device->hidden->use_dev_mouse)) {

   198 		vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;	/* XBIOS mouse events */

   199 	}

   200 /*	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {

   201 		vectors_mask = 0;

   202 	}*/

   203 

   204 	SDL_AtariXbios_InstallVectors(vectors_mask);

   205 

   206 	device->free = GEM_DeleteDevice;

   207 

   208 	return device;

   209 }

   210 

   211 VideoBootStrap GEM_bootstrap = {

   212 	GEM_VID_DRIVER_NAME, "Atari GEM video driver",

   213 	GEM_Available, GEM_CreateDevice

   214 };

   215 

   216 static void VDI_ReadExtInfo(_THIS, short *work_out)

   217 {

   218 	unsigned long EdDI_version;

   219 	unsigned long cookie_EdDI;

   220 	Uint32 num_colours;

   221 	Uint16 clut_type, num_bits;

   222 

   223 	/* Read EdDI informations */

   224 	if  (Getcookie(C_EdDI, &cookie_EdDI) == C_NOTFOUND) {

   225 		return;

   226 	}

   227 	

   228 	EdDI_version = Atari_get_EdDI_version( (void *)cookie_EdDI);

   229 

   230 	vq_scrninfo(VDI_handle, work_out);

   231 

   232 	VDI_format = work_out[0];

   233 	clut_type = work_out[1];

   234 	num_bits = work_out[2];

   235 	num_colours = *((Uint32 *) &work_out[3]);

   236 

   237 	/* With EdDI>=1.1, we can have screen pitch, address and format

   238 	 * so we can directly write to screen without using vro_cpyfm

   239 	 */

   240 	if (EdDI_version >= EDDI_11) {

   241 		VDI_pitch = work_out[5];

   242 		VDI_screen = (void *) *((unsigned long *) &work_out[6]);

   243 	}

   244 

   245 	switch(clut_type) {

   246 		case VDI_CLUT_HARDWARE:

   247 			{

   248 				int i;

   249 				Uint16 *tmp_p;

   250 

   251 				tmp_p = (Uint16 *)&work_out[16];

   252 

   253 				for (i=0;i<256;i++) {

   254 					vdi_index[*tmp_p++] = i;

   255 				}

   256 			}

   257 			break;

   258 		case VDI_CLUT_SOFTWARE:

   259 			{

   260 				int component; /* red, green, blue, alpha, overlay */

   261 				int num_bit;

   262 				unsigned short *tmp_p;

   263 

   264 				/* We can build masks with info here */

   265 				tmp_p = (unsigned short *) &work_out[16];

   266 				for (component=0;component<5;component++) {

   267 					for (num_bit=0;num_bit<16;num_bit++) {

   268 						unsigned short valeur;

   269 

   270 						valeur = *tmp_p++;

   271 

   272 						if (valeur == 0xffff) {

   273 							continue;

   274 						}

   275 

   276 						switch(component) {

   277 							case 0:

   278 								VDI_redmask |= 1<< valeur;

   279 								break;

   280 							case 1:

   281 								VDI_greenmask |= 1<< valeur;

   282 								break;

   283 							case 2:

   284 								VDI_bluemask |= 1<< valeur;

   285 								break;

   286 							case 3:

   287 								VDI_alphamask |= 1<< valeur;

   288 								break;

   289 						}

   290 					}

   291 				}

   292 			}

   293 

   294 			/* Remove lower green bits for Intel endian screen */

   295 			if ((VDI_greenmask == ((7<<13)|3)) || (VDI_greenmask == ((7<<13)|7))) {

   296 				VDI_greenmask &= ~(7<<13);

   297 			}

   298 			break;

   299 		case VDI_CLUT_NONE:

   300 			break;

   301 	}

   302 }

   303 

   304 int GEM_VideoInit(_THIS, SDL_PixelFormat *vformat)

   305 {

   306 	int i, menubar_size;

   307 	short work_in[12], work_out[272], dummy;

   308 

   309 	/* Open AES (Application Environment Services) */

   310 	if (appl_init() == -1) {

   311 		fprintf(stderr,"Can not open AES\n");

   312 		return 1;

   313 	}

   314 

   315 	/* Read version and features */

   316 	GEM_version = aes_global[0];

   317 	if (GEM_version >= 0x0410) {

   318 		short ap_gout[4], errorcode;

   319 		

   320 		GEM_wfeatures=0;

   321 		errorcode=appl_getinfo(AES_WINDOW, &ap_gout[0], &ap_gout[1], &ap_gout[2], &ap_gout[3]);

   322 

   323 		if (errorcode==0) {

   324 			GEM_wfeatures=ap_gout[0];			

   325 		}

   326 	}	

   327 

   328 	/* Ask VDI physical workstation handle opened by AES */

   329 	VDI_handle = graf_handle(&dummy, &dummy, &dummy, &dummy);

   330 	if (VDI_handle<1) {

   331 		fprintf(stderr,"Wrong VDI handle %d returned by AES\n",VDI_handle);

   332 		return 1;

   333 	}

   334 

   335 	/* Open virtual VDI workstation */

   336 	work_in[0]=Getrez()+2;

   337 	for(i = 1; i < 10; i++)

   338 		work_in[i] = 1;

   339 	work_in[10] = 2;

   340 

   341 	v_opnvwk(work_in, &VDI_handle, work_out);

   342 	if (VDI_handle == 0) {

   343 		fprintf(stderr,"Can not open VDI virtual workstation\n");

   344 		return 1;

   345 	}

   346 

   347 	/* Read fullscreen size */

   348 	VDI_w = work_out[0] + 1;

   349 	VDI_h = work_out[1] + 1;

   350 

   351 	/* Read desktop size and position */

   352 	if (!wind_get(DESKTOP_HANDLE, WF_WORKXYWH, &GEM_desk_x, &GEM_desk_y, &GEM_desk_w, &GEM_desk_h)) {

   353 		fprintf(stderr,"Can not read desktop properties\n");

   354 		return 1;

   355 	}

   356 

   357 	/* Read bit depth */

   358 	vq_extnd(VDI_handle, 1, work_out);

   359 	VDI_bpp = work_out[4];

   360 	VDI_oldnumcolors=0;

   361 

   362 	switch(VDI_bpp) {

   363 		case 8:

   364 			VDI_pixelsize=1;

   365 			break;

   366 		case 15:

   367 		case 16:

   368 			VDI_pixelsize=2;

   369 			break;

   370 		case 24:

   371 			VDI_pixelsize=3;

   372 			break;

   373 		case 32:

   374 			VDI_pixelsize=4;

   375 			break;

   376 		default:

   377 			fprintf(stderr,"%d bits colour depth not supported\n",VDI_bpp);

   378 			return 1;

   379 	}

   380 

   381 	/* Setup hardware -> VDI palette mapping */

   382 	for(i = 16; i < 255; i++) {

   383 		vdi_index[i] = i;

   384 	}

   385 	vdi_index[255] = 1;

   386 

   387 	/* Save current palette */

   388 	if (VDI_bpp>8) {

   389 		VDI_oldnumcolors=1<<8;

   390 	} else {

   391 		VDI_oldnumcolors=1<<VDI_bpp;

   392 	}

   393 	

   394 	for(i = 0; i < VDI_oldnumcolors; i++) {

   395 		short rgb[3];

   396 

   397 		vq_color(VDI_handle, i, 0, rgb);

   398 

   399 		VDI_oldpalette[i][0] = rgb[0];

   400 		VDI_oldpalette[i][1] = rgb[1];

   401 		VDI_oldpalette[i][2] = rgb[2];

   402 	}

   403 	VDI_setpalette = GEM_SetNewPalette;

   404 	SDL_memcpy(VDI_curpalette,VDI_oldpalette,sizeof(VDI_curpalette));

   405 

   406 	/* Setup screen info */

   407 	GEM_title_name = empty_name;

   408 	GEM_icon_name = empty_name;

   409 

   410 	GEM_handle = -1;

   411 	GEM_locked = SDL_FALSE;

   412 	GEM_win_fulled = SDL_FALSE;

   413 	GEM_fullscreen = SDL_FALSE;

   414 	GEM_lock_redraw = SDL_TRUE;	/* Prevent redraw till buffers are setup */

   415 

   416 	VDI_screen = NULL;

   417 	VDI_pitch = VDI_w * VDI_pixelsize;

   418 	VDI_format = ( (VDI_bpp <= 8) ? VDI_FORMAT_INTER : VDI_FORMAT_PACK);

   419 	VDI_redmask = VDI_greenmask = VDI_bluemask = VDI_alphamask = 0;

   420 	VDI_ReadExtInfo(this, work_out);

   421 

   422 #ifdef DEBUG_VIDEO_GEM

   423 	printf("sdl:video:gem: screen: address=0x%08x, pitch=%d\n", VDI_screen, VDI_pitch);

   424 	printf("sdl:video:gem: format=%d\n", VDI_format);

   425 	printf("sdl:video:gem: masks: 0x%08x, 0x%08x, 0x%08x, 0x%08x\n",

   426 		VDI_alphamask, VDI_redmask, VDI_greenmask, VDI_bluemask

   427 	);

   428 #endif

   429 

   430 	/* Setup destination mfdb */

   431 	VDI_dst_mfdb.fd_addr = NULL;

   432 

   433 	/* Determine the current screen size */

   434 	this->info.current_w = VDI_w;

   435 	this->info.current_h = VDI_h;

   436 

   437 	/* Determine the screen depth */

   438 	/* we change this during the SDL_SetVideoMode implementation... */

   439 	vformat->BitsPerPixel = VDI_bpp;

   440 

   441 	/* Set mouse cursor to arrow */

   442 	graf_mouse(ARROW, NULL);

   443 	GEM_cursor = NULL;

   444 

   445 	/* Init chunky to planar routine */

   446 	SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;

   447 

   448 	/* Setup VDI fill functions */

   449 	vsf_color(VDI_handle,0);

   450 	vsf_interior(VDI_handle,1);

   451 	vsf_perimeter(VDI_handle,0);

   452 

   453 	/* Menu bar save buffer */

   454 	menubar_size = GEM_desk_w * GEM_desk_y * VDI_pixelsize;

   455 	GEM_menubar=Atari_SysMalloc(menubar_size,MX_PREFTTRAM);

   456 

   457 	/* Fill video modes list */

   458 	SDL_modelist[0] = SDL_malloc(sizeof(SDL_Rect));

   459 	SDL_modelist[0]->x = 0;

   460 	SDL_modelist[0]->y = 0;

   461 	SDL_modelist[0]->w = VDI_w;

   462 	SDL_modelist[0]->h = VDI_h;

   463 

   464 	SDL_modelist[1] = NULL;

   465 

   466 #if SDL_VIDEO_OPENGL

   467 	SDL_AtariGL_InitPointers(this);

   468 #endif

   469 

   470 	this->info.wm_available = 1;

   471 

   472 	/* We're done! */

   473 	return(0);

   474 }

   475 

   476 SDL_Rect **GEM_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)

   477 {

   478 	if (format->BitsPerPixel != VDI_bpp) {

   479 		return ((SDL_Rect **)NULL);

   480 	}

   481 

   482 	if (flags & SDL_FULLSCREEN) {

   483 		return (SDL_modelist);

   484 	}

   485 

   486 	return((SDL_Rect **)-1);

   487 }

   488 

   489 static void GEM_FreeBuffers(_THIS)

   490 {

   491 	/* Release buffer */

   492 	if ( GEM_buffer2 ) {

   493 		Mfree( GEM_buffer2 );

   494 		GEM_buffer2=NULL;

   495 	}

   496 

   497 	if ( GEM_buffer1 ) {

   498 		Mfree( GEM_buffer1 );

   499 		GEM_buffer1=NULL;

   500 	}

   501 }

   502 

   503 static void GEM_ClearRect(_THIS, short *rect)

   504 {

   505 	short oldrgb[3], rgb[3]={0,0,0};

   506 

   507 	vq_color(VDI_handle, vdi_index[0], 0, oldrgb);

   508 	vs_color(VDI_handle, vdi_index[0], rgb);

   509 

   510 	vsf_color(VDI_handle,0);

   511 	vsf_interior(VDI_handle,1);

   512 	vsf_perimeter(VDI_handle,0);

   513 	v_bar(VDI_handle, rect);

   514 

   515 	vs_color(VDI_handle, vdi_index[0], oldrgb);

   516 }

   517 

   518 static void GEM_ClearScreen(_THIS)

   519 {

   520 	short pxy[4];

   521 

   522 	v_hide_c(VDI_handle);

   523 

   524 	pxy[0] = pxy[1] = 0;

   525 	pxy[2] = VDI_w - 1;

   526 	pxy[3] = VDI_h - 1;

   527 	GEM_ClearRect(this, pxy);

   528 

   529 	v_show_c(VDI_handle, 1);

   530 }

   531 

   532 static void GEM_SetNewPalette(_THIS, Uint16 newpal[256][3])

   533 {

   534 	int i;

   535 	short rgb[3];

   536 

   537 	if (VDI_oldnumcolors==0)

   538 		return;

   539 

   540 	for(i = 0; i < VDI_oldnumcolors; i++) {

   541 		rgb[0] = newpal[i][0];

   542 		rgb[1] = newpal[i][1];

   543 		rgb[2] = newpal[i][2];

   544 

   545 		vs_color(VDI_handle, i, rgb);

   546 	}

   547 }

   548 

   549 static void GEM_LockScreen(_THIS)

   550 {

   551 	if (!GEM_locked) {

   552 		/* Lock AES */

   553 		wind_update(BEG_UPDATE);

   554 		wind_update(BEG_MCTRL);

   555 		/* Reserve memory space, used to be sure of compatibility */

   556 		form_dial( FMD_START, 0,0,0,0, 0,0,VDI_w,VDI_h);

   557 

   558 		/* Save menu bar */

   559 		if (GEM_menubar) {

   560 			MFDB mfdb_src;

   561 			short blitcoords[8];

   562 

   563 			mfdb_src.fd_addr=GEM_menubar;

   564 			mfdb_src.fd_w=GEM_desk_w;

   565 			mfdb_src.fd_h=GEM_desk_y;

   566 			mfdb_src.fd_wdwidth=GEM_desk_w>>4;

   567 			mfdb_src.fd_nplanes=VDI_bpp;

   568 			mfdb_src.fd_stand=

   569 				mfdb_src.fd_r1=

   570 				mfdb_src.fd_r2=

   571 				mfdb_src.fd_r3= 0;

   572 

   573 			blitcoords[0] = blitcoords[4] = 0;

   574 			blitcoords[1] = blitcoords[5] = 0;

   575 			blitcoords[2] = blitcoords[6] = GEM_desk_w-1;

   576 			blitcoords[3] = blitcoords[7] = GEM_desk_y-1;

   577 

   578 			vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &VDI_dst_mfdb, &mfdb_src);

   579 		}

   580 

   581 		GEM_locked=SDL_TRUE;

   582 	}

   583 }

   584 

   585 static void GEM_UnlockScreen(_THIS)

   586 {

   587 	if (GEM_locked) {

   588 		/* Restore menu bar */

   589 		if (GEM_menubar) {

   590 			MFDB mfdb_src;

   591 			short blitcoords[8];

   592 

   593 			mfdb_src.fd_addr=GEM_menubar;

   594 			mfdb_src.fd_w=GEM_desk_w;

   595 			mfdb_src.fd_h=GEM_desk_y;

   596 			mfdb_src.fd_wdwidth=GEM_desk_w>>4;

   597 			mfdb_src.fd_nplanes=VDI_bpp;

   598 			mfdb_src.fd_stand=

   599 				mfdb_src.fd_r1=

   600 				mfdb_src.fd_r2=

   601 				mfdb_src.fd_r3= 0;

   602 

   603 			blitcoords[0] = blitcoords[4] = 0;

   604 			blitcoords[1] = blitcoords[5] = 0;

   605 			blitcoords[2] = blitcoords[6] = GEM_desk_w-1;

   606 			blitcoords[3] = blitcoords[7] = GEM_desk_y-1;

   607 

   608 			vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src, &VDI_dst_mfdb);

   609 		}

   610 

   611 		/* Restore screen memory, and send REDRAW to all apps */

   612 		form_dial( FMD_FINISH, 0,0,0,0, 0,0,VDI_w,VDI_h);

   613 		/* Unlock AES */

   614 		wind_update(END_MCTRL);

   615 		wind_update(END_UPDATE);

   616 

   617 		GEM_locked=SDL_FALSE;

   618 	}

   619 }

   620 

   621 SDL_Surface *GEM_SetVideoMode(_THIS, SDL_Surface *current,

   622 				int width, int height, int bpp, Uint32 flags)

   623 {

   624 	Uint32 modeflags, screensize;

   625 	SDL_bool use_shadow1, use_shadow2;

   626 

   627 	/* width must be multiple of 16, for vro_cpyfm() and c2p_convert() */

   628 	if ((width & 15) != 0) {

   629 		width = (width | 15) +1;

   630 	}

   631 

   632 	/*--- Verify if asked mode can be used ---*/

   633 	if (VDI_bpp != bpp) {

   634 		SDL_SetError("%d bpp mode not supported", bpp);

   635 		return(NULL);

   636 	}

   637 

   638 	if (flags & SDL_FULLSCREEN) {

   639 		if ((VDI_w < width) || (VDI_h < height)) {

   640 			SDL_SetError("%dx%d mode is too large", width, height);

   641 			return(NULL);

   642 		}

   643 	}

   644 

   645 	/*--- Allocate the new pixel format for the screen ---*/

   646 	if ( ! SDL_ReallocFormat(current, VDI_bpp, VDI_redmask, VDI_greenmask, VDI_bluemask, VDI_alphamask) ) {

   647 		SDL_SetError("Couldn't allocate new pixel format for requested mode");

   648 		return(NULL);

   649 	}

   650 

   651 	screensize = width * height * VDI_pixelsize;

   652 

   653 #ifdef DEBUG_VIDEO_GEM

   654 	printf("sdl:video:gem: setvideomode(): %dx%dx%d = %d\n", width, height, bpp, screensize);

   655 #endif

   656 

   657 	/*--- Allocate shadow buffers if needed, and conversion operations ---*/

   658 	GEM_FreeBuffers(this);

   659 

   660 	GEM_bufops=0;

   661 	use_shadow1=use_shadow2=SDL_FALSE;

   662 	if (VDI_screen && (flags & SDL_FULLSCREEN)) {

   663 		if (VDI_format==VDI_FORMAT_INTER) {

   664 			use_shadow1=SDL_TRUE;

   665 			GEM_bufops = B2S_C2P_1TOS;

   666 		}

   667 	} else {

   668 		use_shadow1=SDL_TRUE;

   669 		if (VDI_format==VDI_FORMAT_PACK) {

   670 			GEM_bufops = B2S_VROCPYFM_1TOS;

   671 		} else {

   672 			use_shadow2=SDL_TRUE;

   673 			GEM_bufops = B2S_C2P_1TO2|B2S_VROCPYFM_2TOS;

   674 		}

   675 	}

   676 

   677 	if (use_shadow1) {

   678 		GEM_buffer1 = Atari_SysMalloc(screensize, MX_PREFTTRAM);

   679 		if (GEM_buffer1==NULL) {

   680 			SDL_SetError("Can not allocate %d KB for frame buffer", screensize>>10);

   681 			return NULL;

   682 		}

   683 		SDL_memset(GEM_buffer1, 0, screensize);

   684 #ifdef DEBUG_VIDEO_GEM

   685 		printf("sdl:video:gem: setvideomode(): allocated buffer 1\n");

   686 #endif

   687 	}

   688 

   689 	if (use_shadow2) {

   690 		GEM_buffer2 = Atari_SysMalloc(screensize, MX_PREFTTRAM);

   691 		if (GEM_buffer2==NULL) {

   692 			SDL_SetError("Can not allocate %d KB for shadow buffer", screensize>>10);

   693 			return NULL;

   694 		}

   695 		SDL_memset(GEM_buffer2, 0, screensize);

   696 #ifdef DEBUG_VIDEO_GEM

   697 		printf("sdl:video:gem: setvideomode(): allocated buffer 2\n");

   698 #endif

   699 	}

   700 

   701 	/*--- Initialize screen ---*/

   702 	modeflags = SDL_PREALLOC;

   703 	if (VDI_bpp == 8) {

   704 		modeflags |= SDL_HWPALETTE;

   705 	}

   706 

   707 	if (flags & SDL_FULLSCREEN) {

   708 		GEM_LockScreen(this);

   709 

   710 		GEM_ClearScreen(this);

   711 

   712 		modeflags |= SDL_FULLSCREEN;

   713 		if (VDI_screen && (VDI_format==VDI_FORMAT_PACK) && !use_shadow1) {

   714 			modeflags |= SDL_HWSURFACE;

   715 		} else {

   716 			modeflags |= SDL_SWSURFACE;

   717 		}

   718 

   719 		GEM_fullscreen = SDL_TRUE;

   720 	} else {

   721 		int old_win_type;

   722 		short x2,y2,w2,h2;

   723 

   724 		GEM_UnlockScreen(this);

   725 

   726 		/* Set window gadgets */

   727 		old_win_type = GEM_win_type;

   728 		if (!(flags & SDL_NOFRAME)) {

   729 			GEM_win_type=NAME|MOVER|CLOSER|SMALLER;

   730 			if (flags & SDL_RESIZABLE) {

   731 				GEM_win_type |= FULLER|SIZER;

   732 				modeflags |= SDL_RESIZABLE;

   733 			}

   734 		} else {

   735 			GEM_win_type=0;

   736 			modeflags |= SDL_NOFRAME;

   737 		}

   738 		modeflags |= SDL_SWSURFACE;

   739 

   740 		/* Recreate window ? only for different widget or non-created window */

   741 		if ((old_win_type != GEM_win_type) || (GEM_handle < 0)) {

   742 			/* Calculate window size */

   743 			if (!wind_calc(WC_BORDER, GEM_win_type, 0,0,width,height, &x2,&y2,&w2,&h2)) {

   744 				GEM_FreeBuffers(this);

   745 				SDL_SetError("Can not calculate window attributes");

   746 				return NULL;

   747 			}

   748 

   749 			/* Center window */

   750 			x2 = (GEM_desk_w-w2)>>1;

   751 			y2 = (GEM_desk_h-h2)>>1;

   752 			if (x2<0) {

   753 				x2 = 0;

   754 			}

   755 			if (y2<0) {

   756 				y2 = 0;

   757 			}

   758 			x2 += GEM_desk_x;

   759 			y2 += GEM_desk_y;

   760 

   761 			/* Destroy existing window */

   762 			if (GEM_handle >= 0) {

   763 				wind_close(GEM_handle);

   764 				wind_delete(GEM_handle);

   765 			}

   766 

   767 			/* Create window */

   768 			GEM_handle=wind_create(GEM_win_type, x2,y2,w2,h2);

   769 			if (GEM_handle<0) {

   770 				GEM_FreeBuffers(this);

   771 				SDL_SetError("Can not create window");

   772 				return NULL;

   773 			}

   774 

   775 #ifdef DEBUG_VIDEO_GEM

   776 			printf("sdl:video:gem: handle=%d\n", GEM_handle);

   777 #endif

   778 

   779 			/* Setup window name */

   780 			wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_title_name)>>16),(short)(((unsigned long)GEM_title_name) & 0xffff),0,0);

   781 			GEM_refresh_name = SDL_FALSE;

   782 

   783 			/* Open the window */

   784 			wind_open(GEM_handle,x2,y2,w2,h2);

   785 		} else {

   786 			/* Resize window to fit asked video mode */

   787 			wind_get (GEM_handle, WF_WORKXYWH, &x2,&y2,&w2,&h2);

   788 			if (wind_calc(WC_BORDER, GEM_win_type, x2,y2,width,height, &x2,&y2,&w2,&h2)) {

   789 				wind_set (GEM_handle, WF_CURRXYWH, x2,y2,w2,h2);

   790 			}

   791 		}

   792 

   793 		GEM_fullscreen = SDL_FALSE;

   794 	}

   795 

   796 	/* Set up the new mode framebuffer */

   797 	current->w = width;

   798 	current->h = height;

   799 	if (use_shadow1) {

   800 		current->pixels = GEM_buffer1;

   801 		current->pitch = width * VDI_pixelsize;

   802 	} else {

   803 		current->pixels = VDI_screen;

   804 		current->pitch = VDI_pitch;

   805 	}

   806 

   807 #if SDL_VIDEO_OPENGL

   808 	if (flags & SDL_OPENGL) {

   809 		if (!SDL_AtariGL_Init(this, current)) {

   810 			GEM_FreeBuffers(this);

   811 			SDL_SetError("Can not create OpenGL context");

   812 			return NULL;

   813 		}

   814 

   815 		modeflags |= SDL_OPENGL;

   816 	}

   817 #endif

   818 

   819 	current->flags = modeflags;

   820 

   821 #ifdef DEBUG_VIDEO_GEM

   822 	printf("sdl:video:gem: surface: %dx%d\n", current->w, current->h);

   823 #endif

   824 

   825 	this->UpdateRects = GEM_UpdateRects;

   826 	GEM_lock_redraw = SDL_FALSE;	/* Enable redraw */

   827 

   828 	/* We're done */

   829 	return(current);

   830 }

   831 

   832 static int GEM_AllocHWSurface(_THIS, SDL_Surface *surface)

   833 {

   834 	return -1;

   835 }

   836 

   837 static void GEM_FreeHWSurface(_THIS, SDL_Surface *surface)

   838 {

   839 	return;

   840 }

   841 

   842 static int GEM_LockHWSurface(_THIS, SDL_Surface *surface)

   843 {

   844 	return(0);

   845 }

   846 

   847 static void GEM_UnlockHWSurface(_THIS, SDL_Surface *surface)

   848 {

   849 	return;

   850 }

   851 

   852 static void GEM_UpdateRectsFullscreen(_THIS, int numrects, SDL_Rect *rects)

   853 {

   854 	SDL_Surface *surface;

   855 	int i, surf_width;

   856 

   857 	surface = this->screen;

   858 	/* Need to be a multiple of 16 pixels */

   859 	surf_width=surface->w;

   860 	if ((surf_width & 15) != 0) {

   861 		surf_width = (surf_width | 15) + 1;

   862 	}

   863 

   864 	if (GEM_bufops & (B2S_C2P_1TO2|B2S_C2P_1TOS)) {

   865 		void *destscr;

   866 		int destpitch;

   867 

   868 		if (GEM_bufops & B2S_C2P_1TOS) {

   869 			destscr = VDI_screen;

   870 			destpitch = VDI_pitch;

   871 		} else {

   872 			destscr = GEM_buffer2;

   873 			destpitch = surface->pitch;

   874 		}

   875 

   876 		for (i=0;i<numrects;i++) {

   877 			void *source,*destination;

   878 			int x1,x2;

   879 

   880 			x1 = rects[i].x & ~15;

   881 			x2 = rects[i].x+rects[i].w;

   882 			if (x2 & 15) {

   883 				x2 = (x2 | 15) +1;

   884 			}

   885 

   886 			source = surface->pixels;

   887 			source += surface->pitch * rects[i].y;

   888 			source += x1;

   889 

   890 			destination = destscr;

   891 			destination += destpitch * rects[i].y;

   892 			destination += x1;

   893 

   894 			SDL_Atari_C2pConvert(

   895 				source, destination,

   896 				x2-x1, rects[i].h,

   897 				SDL_FALSE,

   898 				surface->pitch, destpitch

   899 			);

   900 		}

   901 	}

   902 

   903 	if (GEM_bufops & (B2S_VROCPYFM_1TOS|B2S_VROCPYFM_2TOS)) {

   904 		MFDB mfdb_src;

   905 		short blitcoords[8];

   906 

   907 		mfdb_src.fd_addr=surface->pixels;

   908 		mfdb_src.fd_w=surf_width;

   909 		mfdb_src.fd_h=surface->h;

   910 		mfdb_src.fd_wdwidth= (surface->pitch/VDI_pixelsize) >> 4;

   911 		mfdb_src.fd_nplanes=surface->format->BitsPerPixel;

   912 		mfdb_src.fd_stand=

   913 			mfdb_src.fd_r1=

   914 			mfdb_src.fd_r2=

   915 			mfdb_src.fd_r3= 0;

   916 		if (GEM_bufops & B2S_VROCPYFM_2TOS) {

   917 			mfdb_src.fd_addr=GEM_buffer2;

   918 		}

   919 

   920 		for ( i=0; i<numrects; ++i ) {

   921 			blitcoords[0] = blitcoords[4] = rects[i].x;

   922 			blitcoords[1] = blitcoords[5] = rects[i].y;

   923 			blitcoords[2] = blitcoords[6] = rects[i].x + rects[i].w - 1;

   924 			blitcoords[3] = blitcoords[7] = rects[i].y + rects[i].h - 1;

   925 

   926 			vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src, &VDI_dst_mfdb);

   927 		}

   928 	}

   929 }

   930 

   931 static void GEM_UpdateRectsWindowed(_THIS, int numrects, SDL_Rect *rects)

   932 {

   933 	short pxy[4], wind_pxy[4];

   934 	int i;

   935 

   936 	if (wind_get(GEM_handle, WF_WORKXYWH, &wind_pxy[0], &wind_pxy[1], &wind_pxy[2], &wind_pxy[3])==0) {

   937 		return;

   938 	}

   939 

   940 	for ( i=0; i<numrects; ++i ) {

   941 		pxy[0] = wind_pxy[0] + rects[i].x;

   942 		pxy[1] = wind_pxy[1] + rects[i].y;

   943 		pxy[2] = rects[i].w;

   944 		pxy[3] = rects[i].h;

   945 

   946 		GEM_wind_redraw(this, GEM_handle, pxy);

   947 	}

   948 }

   949 

   950 static void GEM_UpdateRects(_THIS, int numrects, SDL_Rect *rects)

   951 {

   952 	SDL_Surface *surface;

   953 

   954 	if (GEM_lock_redraw) {

   955 		return;

   956 	}

   957 

   958 	surface = this->screen;

   959 

   960 	if (surface->flags & SDL_FULLSCREEN) {

   961 		GEM_UpdateRectsFullscreen(this, numrects, rects);

   962 	} else {

   963 		GEM_UpdateRectsWindowed(this, numrects, rects);

   964 	}

   965 }

   966 

   967 static int GEM_FlipHWSurfaceFullscreen(_THIS, SDL_Surface *surface)

   968 {

   969 	int surf_width;

   970 

   971 	/* Need to be a multiple of 16 pixels */

   972 	surf_width=surface->w;

   973 	if ((surf_width & 15) != 0) {

   974 		surf_width = (surf_width | 15) + 1;

   975 	}

   976 

   977 	if (GEM_bufops & (B2S_C2P_1TO2|B2S_C2P_1TOS)) {

   978 		void *destscr;

   979 		int destpitch;

   980 

   981 		if (GEM_bufops & B2S_C2P_1TOS) {

   982 			destscr = VDI_screen;

   983 			destpitch = VDI_pitch;

   984 		} else {

   985 			destscr = GEM_buffer2;

   986 			destpitch = surface->pitch;

   987 		}

   988 

   989 		SDL_Atari_C2pConvert(

   990 			surface->pixels, destscr,

   991 			surf_width, surface->h,

   992 			SDL_FALSE,

   993 			surface->pitch, destpitch

   994 		);

   995 	}

   996 

   997 	if (GEM_bufops & (B2S_VROCPYFM_1TOS|B2S_VROCPYFM_2TOS)) {

   998 		MFDB mfdb_src;

   999 		short blitcoords[8];

  1000 

  1001 		mfdb_src.fd_w=surf_width;

  1002 		mfdb_src.fd_h=surface->h;

  1003 		mfdb_src.fd_wdwidth=mfdb_src.fd_w >> 4;

  1004 		mfdb_src.fd_nplanes=surface->format->BitsPerPixel;

  1005 		mfdb_src.fd_stand=

  1006 			mfdb_src.fd_r1=

  1007 			mfdb_src.fd_r2=

  1008 			mfdb_src.fd_r3= 0;

  1009 		if (GEM_bufops & B2S_VROCPYFM_1TOS) {

  1010 			mfdb_src.fd_addr=surface->pixels;

  1011 		} else {

  1012 			mfdb_src.fd_addr=GEM_buffer2;

  1013 		}

  1014 

  1015 		blitcoords[0] = blitcoords[4] = 0;

  1016 		blitcoords[1] = blitcoords[5] = 0;

  1017 		blitcoords[2] = blitcoords[6] = surface->w - 1;

  1018 		blitcoords[3] = blitcoords[7] = surface->h - 1;

  1019 

  1020 		vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src, &VDI_dst_mfdb);

  1021 	}

  1022 

  1023 	return(0);

  1024 }

  1025 

  1026 static int GEM_FlipHWSurfaceWindowed(_THIS, SDL_Surface *surface)

  1027 {

  1028 	short	pxy[8];

  1029 

  1030 	/* Update the whole window */

  1031 	wind_get(GEM_handle, WF_WORKXYWH, &pxy[0], &pxy[1], &pxy[2], &pxy[3]);

  1032 

  1033 	GEM_wind_redraw(this, GEM_handle, pxy);

  1034 

  1035 	return(0);

  1036 }

  1037 

  1038 static int GEM_FlipHWSurface(_THIS, SDL_Surface *surface)

  1039 {

  1040 	if (GEM_lock_redraw) {

  1041 		return(0);

  1042 	}

  1043 

  1044 	if (surface->flags & SDL_FULLSCREEN) {

  1045 		return GEM_FlipHWSurfaceFullscreen(this, surface);

  1046 	} else {

  1047 		return GEM_FlipHWSurfaceWindowed(this, surface);

  1048 	}

  1049 }

  1050 

  1051 static int GEM_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)

  1052 {

  1053 	int i;

  1054 	SDL_Surface *surface;

  1055 

  1056 #ifdef DEBUG_VIDEO_GEM

  1057 	printf("sdl:video:gem: setcolors()\n");

  1058 #endif

  1059 

  1060 	/* Do not change palette in True Colour */

  1061 	surface = this->screen;

  1062 	if (surface->format->BitsPerPixel > 8) {

  1063 		return 1;

  1064 	}

  1065 

  1066 	for(i = 0; i < ncolors; i++)

  1067 	{

  1068 		int		r, g, b;

  1069 		short	rgb[3];

  1070 

  1071 		r = colors[i].r;

  1072 		g = colors[i].g;

  1073 		b = colors[i].b;

  1074 

  1075 		rgb[0] = VDI_curpalette[i][0] = (1000 * r) / 255;

  1076 		rgb[1] = VDI_curpalette[i][1] =(1000 * g) / 255;

  1077 		rgb[2] = VDI_curpalette[i][2] =(1000 * b) / 255;

  1078 

  1079 		vs_color(VDI_handle, vdi_index[firstcolor+i], rgb);

  1080 	}

  1081 

  1082 	return(1);

  1083 }

  1084 

  1085 #if 0

  1086 static int GEM_ToggleFullScreen(_THIS, int on)

  1087 {

  1088 	if (on) {

  1089 		GEM_LockScreen(this);

  1090 	} else {

  1091 		GEM_UnlockScreen(this);

  1092 	}

  1093 

  1094 	return(1);

  1095 }

  1096 #endif

  1097 

  1098 /* Note:  If we are terminated, this could be called in the middle of

  1099    another SDL video routine -- notably UpdateRects.

  1100 */

  1101 void GEM_VideoQuit(_THIS)

  1102 {

  1103 	SDL_AtariXbios_RestoreVectors();

  1104 	if (GEM_usedevmouse) {

  1105 		SDL_AtariDevMouse_Close();

  1106 	}

  1107 

  1108 	GEM_FreeBuffers(this);

  1109 

  1110 #if SDL_VIDEO_OPENGL

  1111 	if (gl_active) {

  1112 		SDL_AtariGL_Quit(this, SDL_TRUE);

  1113 	}

  1114 #endif

  1115 

  1116 	/* Destroy window */

  1117 	if (GEM_handle>=0) {

  1118 		wind_close(GEM_handle);

  1119 		wind_delete(GEM_handle);

  1120 		GEM_handle=-1;

  1121 	}

  1122 

  1123 	GEM_UnlockScreen(this);

  1124 	if (GEM_menubar) {

  1125 		Mfree(GEM_menubar);

  1126 		GEM_menubar=NULL;

  1127 	}

  1128 

  1129 	appl_exit();

  1130 

  1131 	GEM_SetNewPalette(this, VDI_oldpalette);

  1132 

  1133 	/* Close VDI workstation */

  1134 	if (VDI_handle) {

  1135 		v_clsvwk(VDI_handle);