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root/cebix/SheepShaver/src/Unix/video_x.cpp

Comparing SheepShaver/src/Unix/video_x.cpp (file contents):
Revision 1.33 by gbeauche, 2004-11-13T14:09:16Z vs.
Revision 1.41 by gbeauche, 2005-04-02T09:54:16Z

#	Line 1 | Line 1
1		/*
2		*  video_x.cpp - Video/graphics emulation, X11 specific stuff
3		*
4	<	*  SheepShaver (C) 1997-2004 Marc Hellwig and Christian Bauer
4	>	*  SheepShaver (C) 1997-2005 Marc Hellwig and Christian Bauer
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 18 | Line 18
18		*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19		*/
20
21	+	/*
22	+	*  NOTES:
23	+	*    The Ctrl key works like a qualifier for special actions:
24	+	*      Ctrl-Tab = suspend DGA mode
25	+	*      Ctrl-Esc = emergency quit
26	+	*      Ctrl-F1 = mount floppy
27	+	*      Ctrl-F5 = grab mouse (in windowed mode)
28	+	*/
29	+
30		#include "sysdeps.h"
31
32		#include <X11/Xlib.h>
#	Line 31 | Line 40
40
41		#include <algorithm>
42
43	+	#ifdef ENABLE_FBDEV_DGA
44	+	# include <linux/fb.h>
45	+	# include <sys/ioctl.h>
46	+	#endif
47	+
48		#ifdef ENABLE_XF86_DGA
49		# include <X11/extensions/xf86dga.h>
50		#endif
#	Line 109 | Line 123 | static int color_class;
123		static int rshift, rloss, gshift, gloss, bshift, bloss; // Pixel format of DirectColor/TrueColor modes
124		static Colormap cmap[2];                                        // Two colormaps (DGA) for 8-bit mode
125		static XColor x_palette[256];                           // Color palette to be used as CLUT and gamma table
126	+	static int orig_accel_numer, orig_accel_denom, orig_threshold;  // Original mouse acceleration
127
128		static XColor black, white;
129		static unsigned long black_pixel, white_pixel;
#	Line 131 | Line 146 | static uint8 *the_buffer_copy = NULL;          /
146		static uint32 the_buffer_size;                          // Size of allocated the_buffer
147
148		// Variables for DGA mode
149	+	static bool is_fbdev_dga_mode = false;          // Flag: Use FBDev DGA mode?
150		static int current_dga_cmap;
151
152	+	#ifdef ENABLE_FBDEV_DGA
153	+	static int fb_dev_fd = -1;                                              // Handle to fb device name
154	+	static struct fb_fix_screeninfo fb_finfo;               // Fixed info
155	+	static struct fb_var_screeninfo fb_vinfo;               // Variable info
156	+	static struct fb_var_screeninfo fb_orig_vinfo;  // Variable info to restore later
157	+	static struct fb_cmap fb_oldcmap;                               // Colormap to restore later
158	+	#endif
159	+
160		#ifdef ENABLE_XF86_VIDMODE
161		// Variables for XF86 VidMode support
162		static XF86VidModeModeInfo **x_video_modes;             // Array of all available modes
#	Line 153 | Line 177 | static pthread_mutex_t x_palette_lock =
177		#define UNLOCK_PALETTE
178		#endif
179
180	+	// Mutex to protect frame buffer
181	+	#ifdef HAVE_SPINLOCKS
182	+	static spinlock_t frame_buffer_lock = SPIN_LOCK_UNLOCKED;
183	+	#define LOCK_FRAME_BUFFER spin_lock(&frame_buffer_lock)
184	+	#define UNLOCK_FRAME_BUFFER spin_unlock(&frame_buffer_lock)
185	+	#elif defined(HAVE_PTHREADS)
186	+	static pthread_mutex_t frame_buffer_lock = PTHREAD_MUTEX_INITIALIZER;
187	+	#define LOCK_FRAME_BUFFER pthread_mutex_lock(&frame_buffer_lock);
188	+	#define UNLOCK_FRAME_BUFFER pthread_mutex_unlock(&frame_buffer_lock);
189	+	#else
190	+	#define LOCK_FRAME_BUFFER
191	+	#define UNLOCK_FRAME_BUFFER
192	+	#endif
193	+
194
195		// Prototypes
196		static void *redraw_func(void *arg);
#	Line 364 | Line 402 | static bool find_visual_for_depth(int de
402		*  Open display (window or fullscreen)
403		*/
404
405	+	// Set window name and class
406	+	static void set_window_name(Window w, int name)
407	+	{
408	+	const char *str = GetString(name);
409	+	XStoreName(x_display, w, str);
410	+	XSetIconName(x_display, w, str);
411	+
412	+	XClassHint *hints;
413	+	hints = XAllocClassHint();
414	+	if (hints) {
415	+	hints->res_name = "SheepShaver";
416	+	hints->res_class = "SheepShaver";
417	+	XSetClassHint(x_display, w, hints);
418	+	XFree(hints);
419	+	}
420	+	}
421	+
422	+	// Set window input focus flag
423	+	static void set_window_focus(Window w)
424	+	{
425	+	XWMHints *hints = XAllocWMHints();
426	+	if (hints) {
427	+	hints->input = True;
428	+	hints->initial_state = NormalState;
429	+	hints->flags = InputHint | StateHint;
430	+	XSetWMHints(x_display, w, hints);
431	+	XFree(hints);
432	+	}
433	+	}
434	+
435		// Set WM_DELETE_WINDOW protocol on window (preventing it from being destroyed by the WM when clicking on the "close" widget)
436		static Atom WM_DELETE_WINDOW = (Atom)0;
437		static void set_window_delete_protocol(Window w)
#	Line 389 | Line 457 | static void wait_unmapped(Window w)
457		} while ((e.type != UnmapNotify) || (e.xmap.event != w));
458		}
459
460	+	// Disable mouse acceleration
461	+	static void disable_mouse_accel(void)
462	+	{
463	+	XChangePointerControl(x_display, True, False, 1, 1, 0);
464	+	}
465	+
466	+	// Restore mouse acceleration to original value
467	+	static void restore_mouse_accel(void)
468	+	{
469	+	XChangePointerControl(x_display, True, True, orig_accel_numer, orig_accel_denom, orig_threshold);
470	+	}
471	+
472		// Trap SHM errors
473		static bool shm_error = false;
474		static int (*old_error_handler)(Display *, XErrorEvent *);
#	Line 421 | Line 501 | static bool open_window(int width, int h
501		the_win = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
502		InputOutput, vis, CWEventMask | CWBackPixel | CWBorderPixel | CWBackingStore | CWColormap, &wattr);
503
504	<	// Set window name
505	<	XStoreName(x_display, the_win, GetString(STR_WINDOW_TITLE));
504	>	// Set window name/class
505	>	set_window_name(the_win, STR_WINDOW_TITLE);
506	>
507	>	// Indicate that we want keyboard input
508	>	set_window_focus(the_win);
509
510		// Set delete protocol property
511		set_window_delete_protocol(the_win);
#	Line 494 | Line 577 | static bool open_window(int width, int h
577		use_vosf = true;
578		// Allocate memory for frame buffer (SIZE is extended to page-boundary)
579		the_host_buffer = the_buffer_copy;
580	<	the_buffer_size = page_extend((aligned_height + 2) * img->bytes_per_line);
580	>	the_buffer_size = page_extend((aligned_height + 2) * (the_host_buffer_row_bytes = img->bytes_per_line));
581		the_buffer = (uint8 *)vm_acquire(the_buffer_size);
582		the_buffer_copy = (uint8 *)malloc(the_buffer_size);
583		D(bug("the_buffer = %p, the_buffer_copy = %p, the_host_buffer = %p\n", the_buffer, the_buffer_copy, the_host_buffer));
#	Line 550 | Line 633 | static bool open_window(int width, int h
633		return true;
634		}
635
636	+	// Open FBDev display
637	+	static bool open_fbdev(int width, int height)
638	+	{
639	+	#ifdef ENABLE_FBDEV_DGA
640	+	if (ioctl(fb_dev_fd, FBIOGET_FSCREENINFO, &fb_finfo) != 0) {
641	+	D(bug("[fbdev] Can't get FSCREENINFO: %s\n", strerror(errno)));
642	+	return false;
643	+	}
644	+	D(bug("[fbdev] Device ID: %s\n", fb_finfo.id));
645	+	D(bug("[fbdev] smem_start: %p [%d bytes]\n", fb_finfo.smem_start, fb_finfo.smem_len));
646	+
647	+	int fb_type = fb_finfo.type;
648	+	const char *fb_type_str = NULL;
649	+	switch (fb_type) {
650	+	case FB_TYPE_PACKED_PIXELS:                     fb_type_str = "Packed Pixels";                  break;
651	+	case FB_TYPE_PLANES:                            fb_type_str = "Non interleaved planes"; break;
652	+	case FB_TYPE_INTERLEAVED_PLANES:        fb_type_str = "Interleaved planes";             break;
653	+	case FB_TYPE_TEXT:                                      fb_type_str = "Text/attributes";                break;
654	+	case FB_TYPE_VGA_PLANES:                        fb_type_str = "EGA/VGA planes";                 break;
655	+	default:                                                        fb_type_str = "<unknown>";                              break;
656	+	}
657	+	D(bug("[fbdev] type: %s\n", fb_type_str));
658	+
659	+	if (fb_type != FB_TYPE_PACKED_PIXELS) {
660	+	D(bug("[fbdev] type '%s' not supported\n", fb_type_str));
661	+	return false;
662	+	}
663	+
664	+	int fb_visual = fb_finfo.visual;
665	+	const char *fb_visual_str;
666	+	switch (fb_visual) {
667	+	case FB_VISUAL_MONO01:                          fb_visual_str = "Monochrome 1=Black 0=White";   break;
668	+	case FB_VISUAL_MONO10:                          fb_visual_str = "Monochrome 1=While 0=Black";   break;
669	+	case FB_VISUAL_TRUECOLOR:                       fb_visual_str = "True color";                                   break;
670	+	case FB_VISUAL_PSEUDOCOLOR:                     fb_visual_str = "Pseudo color (like atari)";    break;
671	+	case FB_VISUAL_DIRECTCOLOR:                     fb_visual_str = "Direct color";                                 break;
672	+	case FB_VISUAL_STATIC_PSEUDOCOLOR:      fb_visual_str = "Pseudo color readonly";                break;
673	+	default:                                                        fb_visual_str = "<unknown>";                                    break;
674	+	}
675	+	D(bug("[fbdev] visual: %s\n", fb_visual_str));
676	+
677	+	if (fb_visual != FB_VISUAL_TRUECOLOR) {
678	+	D(bug("[fbdev] visual '%s' not supported\n", fb_visual_str));
679	+	return false;
680	+	}
681	+
682	+	// Map frame buffer
683	+	the_buffer = (uint8 *)mmap(NULL, fb_finfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fb_dev_fd, 0);
684	+	if (the_buffer == MAP_FAILED) {
685	+	D(bug("[fbdev] Can't mmap /dev/fb0: %s\n", strerror(errno)));
686	+	return false;
687	+	}
688	+
689	+	// Set absolute mouse mode
690	+	ADBSetRelMouseMode(false);
691	+
692	+	// Create window
693	+	XSetWindowAttributes wattr;
694	+	wattr.event_mask = eventmask = dga_eventmask;
695	+	wattr.override_redirect = True;
696	+	the_win = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
697	+	InputOutput, DefaultVisual(x_display, screen),
698	+	CWEventMask | CWOverrideRedirect, &wattr);
699	+
700	+	// Show window
701	+	XMapRaised(x_display, the_win);
702	+	wait_mapped(the_win);
703	+
704	+	// Grab mouse and keyboard
705	+	XGrabKeyboard(x_display, the_win, True,
706	+	GrabModeAsync, GrabModeAsync, CurrentTime);
707	+	XGrabPointer(x_display, the_win, True,
708	+	PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
709	+	GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
710	+	disable_mouse_accel();
711	+
712	+	// Create no_cursor
713	+	mac_cursor = XCreatePixmapCursor(x_display,
714	+	XCreatePixmap(x_display, the_win, 1, 1, 1),
715	+	XCreatePixmap(x_display, the_win, 1, 1, 1),
716	+	&black, &white, 0, 0);
717	+	XDefineCursor(x_display, the_win, mac_cursor);
718	+
719	+	// Init blitting routines
720	+	#if ENABLE_VOSF
721	+	// Extract current screen color masks (we are in True Color mode)
722	+	VisualFormat visualFormat;
723	+	visualFormat.depth = xdepth = DefaultDepth(x_display, screen);
724	+	XMatchVisualInfo(x_display, screen, xdepth, TrueColor, &visualInfo);
725	+	assert(visualFormat.depth == visualInfo.depth);
726	+	visualFormat.Rmask = visualInfo.red_mask;
727	+	visualFormat.Gmask = visualInfo.green_mask;
728	+	visualFormat.Bmask = visualInfo.blue_mask;
729	+	D(bug("[fbdev] %d bpp, (%08x,%08x,%08x)\n",
730	+	visualFormat.depth,
731	+	visualFormat.Rmask, visualFormat.Gmask, visualFormat.Bmask));
732	+	D(bug("[fbdev] Mac depth %d bpp\n", depth));
733	+
734	+	// Screen_blitter_init() returns TRUE if VOSF is mandatory
735	+	// i.e. the framebuffer update function is not Blit_Copy_Raw
736	+	#ifdef WORDS_BIGENDIAN
737	+	const bool native_byte_order = (XImageByteOrder(x_display) == MSBFirst);
738	+	#else
739	+	const bool native_byte_order = (XImageByteOrder(x_display) == LSBFirst);
740	+	#endif
741	+	Screen_blitter_init(visualFormat, native_byte_order, depth);
742	+
743	+	// Allocate memory for frame buffer (SIZE is extended to page-boundary)
744	+	use_vosf = true;
745	+	the_host_buffer = the_buffer;
746	+	the_host_buffer_row_bytes = TrivialBytesPerRow((width + 7) & ~7, DepthModeForPixelDepth(visualFormat.depth));
747	+	the_buffer_size = page_extend((height + 2) * the_host_buffer_row_bytes);
748	+	the_buffer_copy = (uint8 *)malloc(the_buffer_size);
749	+	the_buffer = (uint8 *)vm_acquire(the_buffer_size);
750	+	D(bug("the_buffer = %p, the_buffer_copy = %p, the_host_buffer = %p\n", the_buffer, the_buffer_copy, the_host_buffer));
751	+	#endif
752	+
753	+	// Set frame buffer base
754	+	D(bug("the_buffer = %p, use_vosf = %d\n", the_buffer, use_vosf));
755	+	screen_base = Host2MacAddr(the_buffer);
756	+	VModes[cur_mode].viRowBytes = TrivialBytesPerRow((width + 7) & ~7, DepthModeForPixelDepth(depth));
757	+	return true;
758	+	#else
759	+	ErrorAlert("SheepShaver has been compiled with DGA support disabled.");
760	+	return false;
761	+	#endif
762	+	}
763	+
764		// Open DGA display (!! should use X11 VidMode extensions to set mode)
765		static bool open_dga(int width, int height)
766		{
767	+	if (is_fbdev_dga_mode)
768	+	return false;
769	+
770		#ifdef ENABLE_XF86_DGA
771		// Set relative mouse mode
772		ADBSetRelMouseMode(true);
#	Line 621 | Line 835 | static bool open_dga(int width, int heig
835		if (use_vosf) {
836		// Allocate memory for frame buffer (SIZE is extended to page-boundary)
837		the_host_buffer = the_buffer;
838	<	the_buffer_size = page_extend((height + 2) * bytes_per_row);
838	>	the_buffer_size = page_extend((height + 2) * (the_host_buffer_row_bytes = bytes_per_row));
839		the_buffer_copy = (uint8 *)malloc(the_buffer_size);
840		the_buffer = (uint8 *)vm_acquire(the_buffer_size);
841		D(bug("the_buffer = %p, the_buffer_copy = %p, the_host_buffer = %p\n", the_buffer, the_buffer_copy, the_host_buffer));
#	Line 647 | Line 861 | static bool open_display(void)
861		D(bug("open_display()\n"));
862		const VideoInfo &mode = VModes[cur_mode];
863
864	+	// Get original mouse acceleration
865	+	XGetPointerControl(x_display, &orig_accel_numer, &orig_accel_denom, &orig_threshold);
866	+
867		// Find best available X visual
868		if (!find_visual_for_depth(mode.viAppleMode)) {
869		ErrorAlert(GetString(STR_NO_XVISUAL_ERR));
#	Line 654 | Line 871 | static bool open_display(void)
871		}
872
873		// Build up visualFormat structure
874	+	visualFormat.fullscreen = (display_type == DIS_SCREEN);
875		visualFormat.depth = visualInfo.depth;
876		visualFormat.Rmask = visualInfo.red_mask;
877		visualFormat.Gmask = visualInfo.green_mask;
#	Line 727 | Line 945 | static bool open_display(void)
945		depth = depth_of_video_mode(mode.viAppleMode);
946
947		bool display_open = false;
948	<	if (display_type == DIS_SCREEN)
948	>	if (display_type == DIS_SCREEN) {
949		display_open = open_dga(VModes[cur_mode].viXsize, VModes[cur_mode].viYsize);
950	+	#ifdef ENABLE_FBDEV_DGA
951	+	// Try to fallback to FBDev DGA mode
952	+	if (!display_open) {
953	+	is_fbdev_dga_mode = true;
954	+	display_open = open_fbdev(VModes[cur_mode].viXsize, VModes[cur_mode].viYsize);
955	+	}
956	+	#endif
957	+
958	+	}
959		else if (display_type == DIS_WINDOW)
960		display_open = open_window(VModes[cur_mode].viXsize, VModes[cur_mode].viYsize);
961
962		#ifdef ENABLE_VOSF
963		if (use_vosf) {
964		// Initialize the VOSF system
965	+	LOCK_VOSF;
966		if (!video_vosf_init()) {
967		ErrorAlert(GetString(STR_VOSF_INIT_ERR));
968	+	UNLOCK_VOSF;
969		return false;
970		}
971	+	UNLOCK_VOSF;
972		}
973		#endif
974	<
974	>
975	>	// Zero screen buffers, viRowBytes is initialized at this stage
976	>	memset(the_buffer, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
977	>	memset(the_buffer_copy, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
978		return display_open;
979		}
980
#	Line 777 | Line 1010 | static void close_window(void)
1010		XSync(x_display, false);
1011		}
1012
1013	+	// Close FBDev mode
1014	+	static void close_fbdev(void)
1015	+	{
1016	+	#ifdef ENABLE_FBDEV_DGA
1017	+	XUngrabPointer(x_display, CurrentTime);
1018	+	XUngrabKeyboard(x_display, CurrentTime);
1019	+
1020	+	uint8 *fb_base;
1021	+	if (!use_vosf) {
1022	+	// don't free() the screen buffer in driver_base dtor
1023	+	fb_base = the_buffer;
1024	+	the_buffer = NULL;
1025	+	}
1026	+	#ifdef ENABLE_VOSF
1027	+	else {
1028	+	// don't free() the screen buffer in driver_base dtor
1029	+	fb_base = the_host_buffer;
1030	+	the_host_buffer = NULL;
1031	+	}
1032	+	#endif
1033	+	munmap(fb_base, fb_finfo.smem_len);
1034	+	#endif
1035	+	}
1036	+
1037		// Close DGA mode
1038		static void close_dga(void)
1039		{
1040	+	if (is_fbdev_dga_mode)
1041	+	return;
1042	+
1043		#ifdef ENABLE_XF86_DGA
1044		XF86DGADirectVideo(x_display, screen, 0);
1045		XUngrabPointer(x_display, CurrentTime);
#	Line 805 | Line 1065 | static void close_dga(void)
1065
1066		static void close_display(void)
1067		{
1068	<	if (display_type == DIS_SCREEN)
1069	<	close_dga();
1068	>	if (display_type == DIS_SCREEN) {
1069	>	if (is_fbdev_dga_mode)
1070	>	close_fbdev();
1071	>	else
1072	>	close_dga();
1073	>	}
1074		else if (display_type == DIS_WINDOW)
1075		close_window();
1076
#	Line 861 | Line 1125 | static void close_display(void)
1125		}
1126		}
1127		#endif
1128	+
1129	+	// Restore mouse acceleration
1130	+	restore_mouse_accel();
1131		}
1132
1133
#	Line 892 | Line 1159 | static void keycode_init(void)
1159
1160		// Search for server vendor string, then read keycodes
1161		const char *vendor = ServerVendor(x_display);
895	–	#if (defined(__APPLE__) && defined(__MACH__))
1162		// Force use of MacX mappings on MacOS X with Apple's X server
1163		int dummy;
1164		if (XQueryExtension(x_display, "Apple-DRI", &dummy, &dummy, &dummy))
1165		vendor = "MacX";
900	–	#endif
1166		bool vendor_found = false;
1167		char line[256];
1168		while (fgets(line, 255, f)) {
#	Line 972 | Line 1237 | static int find_mode(int apple_mode, int
1237		return -1;
1238		}
1239
1240	+	// Add custom video mode
1241	+	static void add_custom_mode(VideoInfo *&p, int type, uint32 x, uint32 y, int apple_mode, int apple_id)
1242	+	{
1243	+	p->viType = type;
1244	+	p->viXsize = x;
1245	+	p->viYsize = y;
1246	+	p->viRowBytes = TrivialBytesPerRow(p->viXsize, apple_mode);
1247	+	p->viAppleMode = apple_mode;
1248	+	p->viAppleID = apple_id;
1249	+	p++;
1250	+	}
1251	+
1252		// Add mode to list of supported modes
1253		static void add_mode(VideoInfo *&p, uint32 allow, uint32 test, int apple_mode, int apple_id, int type)
1254		{
1255		if (allow & test) {
1256	<	p->viType = type;
1256	>	uint32 x = 0, y = 0;
1257		switch (apple_id) {
1258		case APPLE_W_640x480:
1259		case APPLE_640x480:
1260	<	p->viXsize = 640;
1261	<	p->viYsize = 480;
1260	>	x = 640;
1261	>	y = 480;
1262		break;
1263		case APPLE_W_800x600:
1264		case APPLE_800x600:
1265	<	p->viXsize = 800;
1266	<	p->viYsize = 600;
1265	>	x = 800;
1266	>	y = 600;
1267		break;
1268		case APPLE_1024x768:
1269	<	p->viXsize = 1024;
1270	<	p->viYsize = 768;
1269	>	x = 1024;
1270	>	y = 768;
1271		break;
1272		case APPLE_1152x768:
1273	<	p->viXsize = 1152;
1274	<	p->viYsize = 768;
1273	>	x = 1152;
1274	>	y = 768;
1275		break;
1276		case APPLE_1152x900:
1277	<	p->viXsize = 1152;
1278	<	p->viYsize = 900;
1277	>	x = 1152;
1278	>	y = 900;
1279		break;
1280		case APPLE_1280x1024:
1281	<	p->viXsize = 1280;
1282	<	p->viYsize = 1024;
1281	>	x = 1280;
1282	>	y = 1024;
1283		break;
1284		case APPLE_1600x1200:
1285	<	p->viXsize = 1600;
1286	<	p->viYsize = 1200;
1285	>	x = 1600;
1286	>	y = 1200;
1287		break;
1288		}
1289	<	p->viRowBytes = TrivialBytesPerRow(p->viXsize, apple_mode);
1013	<	p->viAppleMode = apple_mode;
1014	<	p->viAppleID = apple_id;
1015	<	p++;
1289	>	add_custom_mode(p, type, x, y, apple_mode, apple_id);
1290		}
1291		}
1292
#	Line 1081 | Line 1355 | bool VideoInit(void)
1355		#ifdef ENABLE_XF86_DGA
1356		// DGA available?
1357		int event_base, error_base;
1358	+	is_fbdev_dga_mode = false;
1359		if (local_X11 && XF86DGAQueryExtension(x_display, &event_base, &error_base)) {
1360		int dga_flags = 0;
1361		XF86DGAQueryDirectVideo(x_display, screen, &dga_flags);
1362		has_dga = dga_flags & XF86DGADirectPresent;
1363	+	#if defined(__linux__)
1364	+	// Check r/w permission on /dev/mem for DGA mode to work
1365	+	if (has_dga && access("/dev/mem", R_OK | W_OK) != 0)
1366	+	has_dga = false;
1367	+	#endif
1368		} else
1369		has_dga = false;
1370		#endif
#	Line 1097 | Line 1377 | bool VideoInit(void)
1377		XF86VidModeGetAllModeLines(x_display, screen, &num_x_video_modes, &x_video_modes);
1378		#endif
1379
1380	+	#ifdef ENABLE_FBDEV_DGA
1381	+	// FBDev available?
1382	+	bool has_fbdev_dga = false;
1383	+	if (local_X11) {
1384	+	if ((fb_dev_fd = open("/dev/fb0", O_RDWR)) > 0) {
1385	+	if (ioctl(fb_dev_fd, FBIOGET_VSCREENINFO, &fb_vinfo) != 0)
1386	+	close(fb_dev_fd);
1387	+	else {
1388	+	has_fbdev_dga = true;
1389	+	if (!has_dga) {
1390	+	// Fallback to FBDev DGA mode if XF86 DGA is not possible
1391	+	has_dga = true;
1392	+	is_fbdev_dga_mode = true;
1393	+	}
1394	+	fb_orig_vinfo = fb_vinfo;
1395	+	D(bug("Frame buffer device initial resolution: %dx%dx%d\n", fb_vinfo.xres, fb_vinfo.yres, fb_vinfo.bits_per_pixel));
1396	+	}
1397	+	}
1398	+	}
1399	+	#endif
1400	+
1401		// Find black and white colors
1402		XParseColor(x_display, DefaultColormap(x_display, screen), "rgb:00/00/00", &black);
1403		XAllocColor(x_display, DefaultColormap(x_display, screen), &black);
#	Line 1122 | Line 1423 | bool VideoInit(void)
1423		break;
1424		}
1425
1426	+	// Get screen mode from preferences
1427	+	const char *mode_str = PrefsFindString("screen");
1428	+	int default_width = 640, default_height = 480;
1429	+	if (mode_str) {
1430	+	display_type = DIS_INVALID;
1431	+	if (sscanf(mode_str, "win/%d/%d", &default_width, &default_height) == 2)
1432	+	display_type = DIS_WINDOW;
1433	+	#ifdef ENABLE_XF86_DGA
1434	+	else if (has_dga && sscanf(mode_str, "dga/%d/%d", &default_width, &default_height) == 2)
1435	+	display_type = DIS_SCREEN;
1436	+	#endif
1437	+	#ifdef ENABLE_FBDEV_DGA
1438	+	else if (has_fbdev_dga && sscanf(mode_str, "fbdev/%d/%d", &default_width, &default_height) == 2) {
1439	+	is_fbdev_dga_mode = true;
1440	+	display_type = DIS_SCREEN;
1441	+	}
1442	+	#endif
1443	+	if (display_type == DIS_INVALID) {
1444	+	D(bug("Invalid screen mode specified, defaulting to old modes selection\n"));
1445	+	mode_str = NULL;
1446	+	}
1447	+	else {
1448	+	if (default_width <= 0)
1449	+	default_width = DisplayWidth(x_display, screen);
1450	+	else if (default_width > DisplayWidth(x_display, screen))
1451	+	default_width = DisplayWidth(x_display, screen);
1452	+	if (default_height <= 0)
1453	+	default_height = DisplayHeight(x_display, screen);
1454	+	else if (default_height > DisplayHeight(x_display, screen))
1455	+	default_height = DisplayHeight(x_display, screen);
1456	+	}
1457	+	}
1458	+
1459		// Construct video mode table
1460		uint32 window_modes = PrefsFindInt32("windowmodes");
1461		uint32 screen_modes = PrefsFindInt32("screenmodes");
1462		if (!has_dga)
1463		screen_modes = 0;
1464	<	if (window_modes == 0 && screen_modes == 0)
1464	>	if (mode_str)
1465	>	window_modes = screen_modes = 0;
1466	>	else if (window_modes == 0 && screen_modes == 0)
1467		window_modes |= 3;      // Allow at least 640x480 and 800x600 window modes
1468
1469		VideoInfo *p = VModes;
1470	<	for (unsigned int d = APPLE_1_BIT; d <= APPLE_32_BIT; d++)
1471	<	if (find_visual_for_depth(d))
1472	<	add_window_modes(p, window_modes, d);
1473	<
1474	<	if (has_vidmode) {
1470	>	if (mode_str) {
1471	>	if (display_type == DIS_WINDOW) {
1472	>	for (unsigned int d = APPLE_1_BIT; d <= APPLE_32_BIT; d++) {
1473	>	if (find_visual_for_depth(d)) {
1474	>	if (default_width > 640 && default_height > 480)
1475	>	add_mode(p, 3, 1, d, APPLE_W_640x480, DIS_WINDOW);
1476	>	if (default_width > 800 && default_height > 600)
1477	>	add_mode(p, 3, 2, d, APPLE_W_800x600, DIS_WINDOW);
1478	>	add_custom_mode(p, display_type, default_width, default_height, d, APPLE_CUSTOM);
1479	>	}
1480	>	}
1481	>	#ifdef ENABLE_VOSF
1482	>	} else if (display_type == DIS_SCREEN && is_fbdev_dga_mode) {
1483	>	for (unsigned int d = APPLE_1_BIT; d <= default_mode; d++)
1484	>	if (find_visual_for_depth(d))
1485	>	add_custom_mode(p, display_type, default_width, default_height, d, APPLE_CUSTOM);
1486	>	#endif
1487	>	} else
1488	>	add_custom_mode(p, display_type, default_width, default_height, default_mode, APPLE_CUSTOM);
1489	>	} else if (window_modes) {
1490	>	for (unsigned int d = APPLE_1_BIT; d <= APPLE_32_BIT; d++)
1491	>	if (find_visual_for_depth(d))
1492	>	add_window_modes(p, window_modes, d);
1493	>	} else if (has_vidmode) {
1494		if (has_mode(640, 480))
1495		add_mode(p, screen_modes, 1, default_mode, APPLE_640x480, DIS_SCREEN);
1496		if (has_mode(800, 600))
#	Line 1176 | Line 1531 | bool VideoInit(void)
1531		int apple_id = find_apple_resolution(screen_width, screen_height);
1532		if (apple_id != -1)
1533		cur_mode = find_mode(default_mode, apple_id, DIS_SCREEN);
1534	<	}
1534	>	} else if (has_dga && mode_str)
1535	>	cur_mode = find_mode(default_mode, APPLE_CUSTOM, DIS_SCREEN);
1536	>
1537		if (cur_mode == -1) {
1538		// pick up first windowed mode available
1539		for (VideoInfo *p = VModes; p->viType != DIS_INVALID; p++) {
#	Line 1205 | Line 1562 | bool VideoInit(void)
1562		XSetErrorHandler(ignore_errors);
1563		#endif
1564
1565	+	// Lock down frame buffer
1566	+	XSync(x_display, false);
1567	+	LOCK_FRAME_BUFFER;
1568	+
1569		// Start periodic thread
1570		XSync(x_display, false);
1571		Set_pthread_attr(&redraw_thread_attr, 0);
#	Line 1229 | Line 1590 | void VideoExit(void)
1590		redraw_thread_active = false;
1591		}
1592
1593	+	// Unlock frame buffer
1594	+	UNLOCK_FRAME_BUFFER;
1595	+	XSync(x_display, false);
1596	+	D(bug(" frame buffer unlocked\n"));
1597	+
1598		#ifdef ENABLE_VOSF
1599		if (use_vosf) {
1600		// Deinitialize VOSF
#	Line 1243 | Line 1609 | void VideoExit(void)
1609		XFlush(x_display);
1610		XSync(x_display, false);
1611		}
1612	+
1613	+	#ifdef ENABLE_FBDEV_DGA
1614	+	// Close framebuffer device
1615	+	if (fb_dev_fd >= 0) {
1616	+	close(fb_dev_fd);
1617	+	fb_dev_fd = -1;
1618	+	}
1619	+	#endif
1620		}
1621
1622
#	Line 1250 | Line 1624 | void VideoExit(void)
1624		*  Suspend/resume emulator
1625		*/
1626
1253	–	extern void PauseEmulator(void);
1254	–	extern void ResumeEmulator(void);
1255	–
1627		static void suspend_emul(void)
1628		{
1629		if (display_type == DIS_SCREEN) {
#	Line 1260 | Line 1631 | static void suspend_emul(void)
1631		ADBKeyUp(0x36);
1632		ctrl_down = false;
1633
1634	<	// Pause MacOS thread
1635	<	PauseEmulator();
1265	<	emul_suspended = true;
1634	>	// Lock frame buffer (this will stop the MacOS thread)
1635	>	LOCK_FRAME_BUFFER;
1636
1637		// Save frame buffer
1638		fb_save = malloc(VModes[cur_mode].viYsize * VModes[cur_mode].viRowBytes);
#	Line 1270 | Line 1640 | static void suspend_emul(void)
1640		Mac2Host_memcpy(fb_save, screen_base, VModes[cur_mode].viYsize * VModes[cur_mode].viRowBytes);
1641
1642		// Close full screen display
1643	+	#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1644		#ifdef ENABLE_XF86_DGA
1645	<	XF86DGADirectVideo(x_display, screen, 0);
1645	>	if (!is_fbdev_dga_mode)
1646	>	XF86DGADirectVideo(x_display, screen, 0);
1647	>	#endif
1648		XUngrabPointer(x_display, CurrentTime);
1649		XUngrabKeyboard(x_display, CurrentTime);
1650		#endif
1651	+	restore_mouse_accel();
1652	+	XUnmapWindow(x_display, the_win);
1653	+	wait_unmapped(the_win);
1654		XSync(x_display, false);
1655
1656		// Open "suspend" window
1657		XSetWindowAttributes wattr;
1658		wattr.event_mask = KeyPressMask;
1659	<	wattr.background_pixel = black_pixel;
1284	<	wattr.border_pixel = black_pixel;
1659	>	wattr.background_pixel = (vis == DefaultVisual(x_display, screen) ? black_pixel : 0);
1660		wattr.backing_store = Always;
1661	<	wattr.backing_planes = xdepth;
1662	<	wattr.colormap = DefaultColormap(x_display, screen);
1288	<	XSync(x_display, false);
1661	>	wattr.colormap = (depth == 1 ? DefaultColormap(x_display, screen) : cmap[0]);
1662	>
1663		suspend_win = XCreateWindow(x_display, rootwin, 0, 0, 512, 1, 0, xdepth,
1664	<	InputOutput, vis, CWEventMask | CWBackPixel | CWBorderPixel |
1665	<	CWBackingStore | CWBackingPlanes | (xdepth == 8 ? CWColormap : 0), &wattr);
1666	<	XSync(x_display, false);
1667	<	XStoreName(x_display, suspend_win, GetString(STR_SUSPEND_WINDOW_TITLE));
1668	<	XMapRaised(x_display, suspend_win);
1295	<	XSync(x_display, false);
1664	>	InputOutput, vis, CWEventMask | CWBackPixel | CWBackingStore | CWColormap, &wattr);
1665	>	set_window_name(suspend_win, STR_SUSPEND_WINDOW_TITLE);
1666	>	set_window_focus(suspend_win);
1667	>	XMapWindow(x_display, suspend_win);
1668	>	emul_suspended = true;
1669		}
1670		}
1671
#	Line 1303 | Line 1676 | static void resume_emul(void)
1676		XSync(x_display, false);
1677
1678		// Reopen full screen display
1679	<	XGrabKeyboard(x_display, rootwin, 1, GrabModeAsync, GrabModeAsync, CurrentTime);
1680	<	XGrabPointer(x_display, rootwin, 1, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
1679	>	XMapRaised(x_display, the_win);
1680	>	wait_mapped(the_win);
1681	>	XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
1682	>	Window w = is_fbdev_dga_mode ? the_win : rootwin;
1683	>	XGrabKeyboard(x_display, w, True, GrabModeAsync, GrabModeAsync, CurrentTime);
1684	>	XGrabPointer(x_display, w, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
1685	>	disable_mouse_accel();
1686		#ifdef ENABLE_XF86_DGA
1687	<	XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
1688	<	XF86DGASetViewPort(x_display, screen, 0, 0);
1687	>	if (!is_fbdev_dga_mode) {
1688	>	XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
1689	>	XF86DGASetViewPort(x_display, screen, 0, 0);
1690	>	}
1691		#endif
1692		XSync(x_display, false);
1693
#	Line 1318 | Line 1698 | static void resume_emul(void)
1698		if (use_vosf) {
1699		LOCK_VOSF;
1700		PFLAG_SET_ALL;
1321	–	UNLOCK_VOSF;
1701		memset(the_buffer_copy, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
1702	+	UNLOCK_VOSF;
1703		}
1704		#endif
1705
#	Line 1333 | Line 1713 | static void resume_emul(void)
1713		free(fb_save);
1714		fb_save = NULL;
1715		}
1336	–	if (depth == 8)
1337	–	palette_changed = true;
1716
1717	<	// Resume MacOS thread
1717	>	// Unlock frame buffer (and continue MacOS thread)
1718	>	UNLOCK_FRAME_BUFFER;
1719		emul_suspended = false;
1341	–	ResumeEmulator();
1720		}
1721
1722
#	Line 1635 | Line 2013 | static void handle_events(void)
2013		if (use_vosf) {                 // VOSF refresh
2014		LOCK_VOSF;
2015		PFLAG_SET_ALL;
2016	+	memset(the_buffer_copy, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
2017		UNLOCK_VOSF;
2018		}
2019	+	else
2020		#endif
2021	<	memset(the_buffer_copy, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
2021	>	memset(the_buffer_copy, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
2022		break;
2023		}
2024		}
#	Line 1654 | Line 2034 | void VideoVBL(void)
2034		if (emerg_quit)
2035		QuitEmulator();
2036
2037	+	// Temporarily give up frame buffer lock (this is the point where
2038	+	// we are suspended when the user presses Ctrl-Tab)
2039	+	UNLOCK_FRAME_BUFFER;
2040	+	LOCK_FRAME_BUFFER;
2041	+
2042		// Execute video VBL
2043		if (private_data != NULL && private_data->interruptsEnabled)
2044		VSLDoInterruptService(private_data->vslServiceID);
#	Line 1750 | Line 2135 | void video_set_palette(void)
2135		// We have to redraw everything because the interpretation of pixel values changed
2136		LOCK_VOSF;
2137		PFLAG_SET_ALL;
2138	+	if (display_type == DIS_SCREEN)
2139	+	PFLAG_SET_VERY_DIRTY;
2140		UNLOCK_VOSF;
1754	–	memset(the_buffer_copy, 0, VModes[cur_mode].viRowBytes * VModes[cur_mode].viYsize);
2141		}
2142		#endif
2143
#	Line 1933 | Line 2319 | static void handle_palette_changes(void)
2319		}
2320
2321		#ifdef ENABLE_XF86_DGA
2322	<	if (display_type == DIS_SCREEN) {
2322	>	if (display_type == DIS_SCREEN && !is_fbdev_dga_mode) {
2323		current_dga_cmap ^= 1;
2324		if (!IsDirectMode(mode) && cmap[current_dga_cmap])
2325		XF86DGAInstallColormap(x_display, screen, cmap[current_dga_cmap]);
#	Line 1978 | Line 2364 | static void *redraw_func(void *arg)
2364		quit_full_screen = false;
2365		if (display_type == DIS_SCREEN) {
2366		XDisplayLock();
2367	+	#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
2368		#ifdef ENABLE_XF86_DGA
2369	<	XF86DGADirectVideo(x_display, screen, 0);
2369	>	if (is_fbdev_dga_mode)
2370	>	XF86DGADirectVideo(x_display, screen, 0);
2371	>	#endif
2372		XUngrabPointer(x_display, CurrentTime);
2373		XUngrabKeyboard(x_display, CurrentTime);
2374		XUnmapWindow(x_display, the_win);

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