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

Comparing BasiliskII/src/Unix/video_x.cpp (file contents):
Revision 1.50 by cebix, 2001-07-01T21:09:29Z vs.
Revision 1.59 by cebix, 2001-07-11T17:04:41Z

#	Line 24 | Line 24
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"
#	Line 36 | Line 37
37		#include <sys/shm.h>
38		#include <errno.h>
39
40	+	#include <algorithm>
41	+
42	+	#ifndef NO_STD_NAMESPACE
43	+	using std::sort;
44	+	#endif
45	+
46		#ifdef HAVE_PTHREADS
47		# include <pthread.h>
48		#endif
#	Line 86 | Line 93 | static int display_type = DISPLAY_WINDOW
93		static bool local_X11;                                                          // Flag: X server running on local machine?
94		static uint8 *the_buffer = NULL;                                        // Mac frame buffer (where MacOS draws into)
95		static uint8 *the_buffer_copy = NULL;                           // Copy of Mac frame buffer (for refreshed modes)
96	+	static uint32 the_buffer_size;                                          // Size of allocated the_buffer
97
98		static bool redraw_thread_active = false;                       // Flag: Redraw thread installed
99		#ifdef HAVE_PTHREADS
#	Line 115 | Line 123 | static int keycode_table[256];                                         // X
123
124		// X11 variables
125		static int screen;                                                                      // Screen number
118	–	static int xdepth;                                                                      // Depth of X screen
126		static Window rootwin;                                                          // Root window and our window
127	<	static XVisualInfo visualInfo;
128	<	static Visual *vis;
122	<	static Colormap cmap[2] = {0, 0};                                       // Colormaps for indexed modes (DGA needs two of them)
127	>	static int num_depths = 0;                                                      // Number of available X depths
128	>	static int *avail_depths = NULL;                                        // List of available X depths
129		static XColor black, white;
130		static unsigned long black_pixel, white_pixel;
131		static int eventmask;
132
133	+	static int xdepth;                                                                      // Depth of X screen
134	+	static XVisualInfo visualInfo;
135	+	static Visual *vis;
136	+	static int color_class;
137	+
138		static int rshift, rloss, gshift, gloss, bshift, bloss; // Pixel format of DirectColor/TrueColor modes
139
140	+	static Colormap cmap[2] = {0, 0};                                       // Colormaps for indexed modes (DGA needs two of them)
141	+
142		static XColor palette[256];                                                     // Color palette to be used as CLUT and gamma table
143		static bool palette_changed = false;                            // Flag: Palette changed, redraw thread must set new colors
144
#	Line 191 | Line 204 | static inline uint32 map_rgb(uint8 red,
204		return ((red >> rloss) << rshift) | ((green >> gloss) << gshift) | ((blue >> bloss) << bshift);
205		}
206
207	+	// Do we have a visual for handling the specified Mac depth? If so, set the
208	+	// global variables "xdepth", "visualInfo", "vis" and "color_class".
209	+	static bool find_visual_for_depth(video_depth depth)
210	+	{
211	+	D(bug("have_visual_for_depth(%d)\n", 1 << depth));
212	+
213	+	// Calculate minimum and maximum supported X depth
214	+	int min_depth = 1, max_depth = 32;
215	+	switch (depth) {
216	+	case VDEPTH_1BIT:       // 1-bit works always and uses default visual
217	+	min_depth = max_depth = DefaultDepth(x_display, screen);
218	+	break;
219	+	#ifdef ENABLE_VOSF
220	+	case VDEPTH_2BIT:
221	+	case VDEPTH_4BIT:       // VOSF blitters can convert 2/4/8-bit -> 8/16/32-bit
222	+	case VDEPTH_8BIT:
223	+	min_depth = 8;
224	+	max_depth = 32;
225	+	break;
226	+	#else
227	+	case VDEPTH_2BIT:
228	+	case VDEPTH_4BIT:       // 2/4-bit requires VOSF blitters
229	+	return false;
230	+	case VDEPTH_8BIT:       // 8-bit without VOSF requires an 8-bit visual
231	+	min_depth = 8;
232	+	max_depth = 8;
233	+	break;
234	+	#endif
235	+	case VDEPTH_16BIT:      // 16-bit requires a 15/16-bit visual
236	+	min_depth = 15;
237	+	max_depth = 16;
238	+	break;
239	+	case VDEPTH_32BIT:      // 32-bit requires a 24/32-bit visual
240	+	min_depth = 24;
241	+	max_depth = 32;
242	+	break;
243	+	}
244	+	D(bug(" minimum required X depth is %d, maximum supported X depth is %d\n", min_depth, max_depth));
245	+
246	+	// Try to find a visual for one of the color depths
247	+	bool visual_found = false;
248	+	for (int i=0; i<num_depths && !visual_found; i++) {
249	+
250	+	xdepth = avail_depths[i];
251	+	D(bug(" trying to find visual for depth %d\n", xdepth));
252	+	if (xdepth < min_depth || xdepth > max_depth)
253	+	continue;
254	+
255	+	// Determine best color class for this depth
256	+	switch (xdepth) {
257	+	case 1: // Try StaticGray or StaticColor
258	+	if (XMatchVisualInfo(x_display, screen, xdepth, StaticGray, &visualInfo)
259	+	|| XMatchVisualInfo(x_display, screen, xdepth, StaticColor, &visualInfo))
260	+	visual_found = true;
261	+	break;
262	+	case 8: // Need PseudoColor
263	+	if (XMatchVisualInfo(x_display, screen, xdepth, PseudoColor, &visualInfo))
264	+	visual_found = true;
265	+	break;
266	+	case 15:
267	+	case 16:
268	+	case 24:
269	+	case 32: // Try DirectColor first, as this will allow gamma correction
270	+	if (XMatchVisualInfo(x_display, screen, xdepth, DirectColor, &visualInfo)
271	+	|| XMatchVisualInfo(x_display, screen, xdepth, TrueColor, &visualInfo))
272	+	visual_found = true;
273	+	break;
274	+	default:
275	+	D(bug("  not a supported depth\n"));
276	+	break;
277	+	}
278	+	}
279	+	if (!visual_found)
280	+	return false;
281	+
282	+	// Visual was found
283	+	vis = visualInfo.visual;
284	+	color_class = visualInfo.c_class;
285	+	D(bug(" found visual ID 0x%02x, depth %d, class ", visualInfo.visualid, xdepth));
286	+	#if DEBUG
287	+	switch (color_class) {
288	+	case StaticGray: D(bug("StaticGray\n")); break;
289	+	case GrayScale: D(bug("GrayScale\n")); break;
290	+	case StaticColor: D(bug("StaticColor\n")); break;
291	+	case PseudoColor: D(bug("PseudoColor\n")); break;
292	+	case TrueColor: D(bug("TrueColor\n")); break;
293	+	case DirectColor: D(bug("DirectColor\n")); break;
294	+	}
295	+	#endif
296	+	return true;
297	+	}
298	+
299		// Add mode to list of supported modes
300		static void add_mode(uint32 width, uint32 height, uint32 resolution_id, uint32 bytes_per_row, video_depth depth)
301		{
#	Line 236 | Line 341 | static void set_mac_frame_buffer(video_d
341		InitFrameBufferMapping();
342		#else
343		VideoMonitor.mac_frame_base = Host2MacAddr(the_buffer);
239	–	D(bug("Host frame buffer = %p, ", the_buffer));
344		#endif
345		D(bug("VideoMonitor.mac_frame_base = %08x\n", VideoMonitor.mac_frame_base));
346		}
#	Line 322 | Line 426 | public:
426		virtual void update_palette(void);
427		virtual void suspend(void) {}
428		virtual void resume(void) {}
429	+	virtual void toggle_mouse_grab(void) {}
430	+	virtual void mouse_moved(int x, int y) { ADBMouseMoved(x, y); }
431	+
432	+	void disable_mouse_accel(void);
433	+	void restore_mouse_accel(void);
434	+
435	+	virtual void grab_mouse(void) {}
436	+	virtual void ungrab_mouse(void) {}
437
438		public:
439		bool init_ok;   // Initialization succeeded (we can't use exceptions because of -fomit-frame-pointer)
440		Window w;               // The window we draw into
441	+
442	+	int orig_accel_numer, orig_accel_denom, orig_threshold; // Original mouse acceleration
443		};
444
445		class driver_window;
#	Line 342 | Line 456 | public:
456		driver_window(const video_mode &mode);
457		~driver_window();
458
459	+	void toggle_mouse_grab(void);
460	+	void mouse_moved(int x, int y);
461	+
462	+	void grab_mouse(void);
463	+	void ungrab_mouse(void);
464	+
465		private:
466		GC gc;
467		XImage *img;
468	<	bool have_shm;                          // Flag: SHM extensions available
468	>	bool have_shm;                                  // Flag: SHM extensions available
469		XShmSegmentInfo shminfo;
470		Cursor mac_cursor;
471	+	bool mouse_grabbed;                             // Flag: mouse pointer grabbed, using relative mouse mode
472	+	int mouse_last_x, mouse_last_y; // Last mouse position (for relative mode)
473		};
474
475		static driver_base *drv = NULL; // Pointer to currently used driver object
#	Line 361 | Line 483 | driver_base::driver_base()
483		{
484		the_buffer = NULL;
485		the_buffer_copy = NULL;
486	+	XGetPointerControl(x_display, &orig_accel_numer, &orig_accel_denom, &orig_threshold);
487		}
488
489		driver_base::~driver_base()
490		{
491	+	ungrab_mouse();
492	+	restore_mouse_accel();
493	+
494		if (w) {
495		XUnmapWindow(x_display, w);
496		wait_unmapped(w);
#	Line 387 | Line 513 | driver_base::~driver_base()
513		}
514		#ifdef ENABLE_VOSF
515		else {
516	<	if (the_buffer != (uint8 *)VM_MAP_FAILED) {
517	<	vm_release(the_buffer, the_buffer_size);
516	>	if (the_host_buffer) {
517	>	free(the_host_buffer);
518	>	the_host_buffer = NULL;
519	>	}
520	>	if (the_buffer) {
521	>	free(the_buffer);
522		the_buffer = NULL;
523		}
524	<	if (the_buffer_copy != (uint8 *)VM_MAP_FAILED) {
525	<	vm_release(the_buffer_copy, the_buffer_size);
524	>	if (the_buffer_copy) {
525	>	free(the_buffer_copy);
526		the_buffer_copy = NULL;
527		}
528		}
#	Line 402 | Line 532 | driver_base::~driver_base()
532		// Palette has changed
533		void driver_base::update_palette(void)
534		{
535	<	if (cmap[0] && cmap[1]) {
536	<	int num = 256;
537	<	if (IsDirectMode(VideoMonitor.mode))
408	<	num = vis->map_entries; // Palette is gamma table
409	<	else if (vis->c_class == DirectColor)
535	>	if (color_class == PseudoColor || color_class == DirectColor) {
536	>	int num = vis->map_entries;
537	>	if (!IsDirectMode(VideoMonitor.mode) && color_class == DirectColor)
538		return; // Indexed mode on true color screen, don't set CLUT
539		XStoreColors(x_display, cmap[0], palette, num);
540		XStoreColors(x_display, cmap[1], palette, num);
#	Line 414 | Line 542 | void driver_base::update_palette(void)
542		XSync(x_display, false);
543		}
544
545	+	// Disable mouse acceleration
546	+	void driver_base::disable_mouse_accel(void)
547	+	{
548	+	XChangePointerControl(x_display, True, False, 1, 1, 0);
549	+	}
550	+
551	+	// Restore mouse acceleration to original value
552	+	void driver_base::restore_mouse_accel(void)
553	+	{
554	+	XChangePointerControl(x_display, True, True, orig_accel_numer, orig_accel_denom, orig_threshold);
555	+	}
556	+
557
558		/*
559		*  Windowed display driver
#	Line 421 | Line 561 | void driver_base::update_palette(void)
561
562		// Open display
563		driver_window::driver_window(const video_mode &mode)
564	<	: gc(0), img(NULL), have_shm(false), mac_cursor(0)
564	>	: gc(0), img(NULL), have_shm(false), mouse_grabbed(false), mac_cursor(0)
565		{
566		int width = mode.x, height = mode.y;
567		int aligned_width = (width + 15) & ~15;
568		int aligned_height = (height + 15) & ~15;
569
570		// Set absolute mouse mode
571	<	ADBSetRelMouseMode(false);
571	>	ADBSetRelMouseMode(mouse_grabbed);
572
573	<	// Create window
573	>	// Create window (setting backround_pixel, border_pixel and colormap is
574	>	// mandatory when using a non-default visual; in 1-bit mode we use the
575	>	// default visual, so we can also use the default colormap)
576		XSetWindowAttributes wattr;
577		wattr.event_mask = eventmask = win_eventmask;
578	<	wattr.background_pixel = black_pixel;
579	<	wattr.colormap = (mode.depth == VDEPTH_1BIT && vis->c_class == PseudoColor ? DefaultColormap(x_display, screen) : cmap[0]);
578	>	wattr.background_pixel = (vis == DefaultVisual(x_display, screen) ? black_pixel : 0);
579	>	wattr.border_pixel = 0;
580	>	wattr.colormap = (mode.depth == VDEPTH_1BIT ? DefaultColormap(x_display, screen) : cmap[0]);
581		w = XCreateWindow(x_display, rootwin, 0, 0, width, height, 0, xdepth,
582	<	InputOutput, vis, CWEventMask | CWBackPixel | (vis->c_class == PseudoColor || vis->c_class == DirectColor ? CWColormap : 0), &wattr);
582	>	InputOutput, vis, CWEventMask | CWBackPixel | CWBorderPixel | CWColormap, &wattr);
583
584		// Set window name/class
585		set_window_name(w, STR_WINDOW_TITLE);
#	Line 488 | Line 631 | driver_window::driver_window(const video
631		if (shm_error) {
632		shmdt(shminfo.shmaddr);
633		XDestroyImage(img);
634	+	img = NULL;
635		shminfo.shmid = -1;
636		} else {
637		have_shm = true;
#	Line 508 | Line 652 | driver_window::driver_window(const video
652		}
653
654		#ifdef ENABLE_VOSF
655	+	use_vosf = true;
656		// Allocate memory for frame buffer (SIZE is extended to page-boundary)
657		the_host_buffer = the_buffer_copy;
658		the_buffer_size = page_extend((aligned_height + 2) * img->bytes_per_line);
659		the_buffer_copy = (uint8 *)vm_acquire(the_buffer_size);
660		the_buffer = (uint8 *)vm_acquire(the_buffer_size);
661	+	D(bug("the_buffer = %p, the_buffer_copy = %p, the_host_buffer = %p\n", the_buffer, the_buffer_copy, the_host_buffer));
662		#else
663		// Allocate memory for frame buffer
664		the_buffer = (uint8 *)malloc((aligned_height + 2) * img->bytes_per_line);
665	+	D(bug("the_buffer = %p, the_buffer_copy = %p\n", the_buffer, the_buffer_copy));
666		#endif
667
668		// Create GC
#	Line 551 | Line 698 | driver_window::driver_window(const video
698		// Close display
699		driver_window::~driver_window()
700		{
554	–	if (img)
555	–	XDestroyImage(img);
701		if (have_shm) {
702		XShmDetach(x_display, &shminfo);
703	+	#ifdef ENABLE_VOSF
704	+	the_host_buffer = NULL; // don't free() in driver_base dtor
705	+	#else
706		the_buffer_copy = NULL; // don't free() in driver_base dtor
707	+	#endif
708	+	}
709	+	#ifdef ENABLE_VOSF
710	+	if (use_vosf) {
711	+	// don't free() memory mapped buffers in driver_base dtor
712	+	if (the_buffer != VM_MAP_FAILED) {
713	+	vm_release(the_buffer, the_buffer_size);
714	+	the_buffer = NULL;
715	+	}
716	+	if (the_buffer_copy != VM_MAP_FAILED) {
717	+	vm_release(the_buffer_copy, the_buffer_size);
718	+	the_buffer_copy = NULL;
719	+	}
720	+	}
721	+	#endif
722	+	if (img)
723	+	XDestroyImage(img);
724	+	if (have_shm) {
725	+	shmdt(shminfo.shmaddr);
726	+	shmctl(shminfo.shmid, IPC_RMID, 0);
727		}
728		if (gc)
729		XFreeGC(x_display, gc);
730		}
731
732	+	// Toggle mouse grab
733	+	void driver_window::toggle_mouse_grab(void)
734	+	{
735	+	if (mouse_grabbed)
736	+	ungrab_mouse();
737	+	else
738	+	grab_mouse();
739	+	}
740	+
741	+	// Grab mouse, switch to relative mouse mode
742	+	void driver_window::grab_mouse(void)
743	+	{
744	+	int result;
745	+	for (int i=0; i<10; i++) {
746	+	result = XGrabPointer(x_display, w, True, 0,
747	+	GrabModeAsync, GrabModeAsync, w, None, CurrentTime);
748	+	if (result != AlreadyGrabbed)
749	+	break;
750	+	Delay_usec(100000);
751	+	}
752	+	if (result == GrabSuccess) {
753	+	XStoreName(x_display, w, GetString(STR_WINDOW_TITLE_GRABBED));
754	+	ADBSetRelMouseMode(mouse_grabbed = true);
755	+	disable_mouse_accel();
756	+	}
757	+	}
758	+
759	+	// Ungrab mouse, switch to absolute mouse mode
760	+	void driver_window::ungrab_mouse(void)
761	+	{
762	+	if (mouse_grabbed) {
763	+	XUngrabPointer(x_display, CurrentTime);
764	+	XStoreName(x_display, w, GetString(STR_WINDOW_TITLE));
765	+	ADBSetRelMouseMode(mouse_grabbed = false);
766	+	restore_mouse_accel();
767	+	}
768	+	}
769	+
770	+	// Mouse moved
771	+	void driver_window::mouse_moved(int x, int y)
772	+	{
773	+	if (!mouse_grabbed) {
774	+	mouse_last_x = x; mouse_last_y = y;
775	+	ADBMouseMoved(x, y);
776	+	return;
777	+	}
778	+
779	+	// Warped mouse motion (this code is taken from SDL)
780	+
781	+	// Post first mouse event
782	+	int width = VideoMonitor.mode.x, height = VideoMonitor.mode.y;
783	+	int delta_x = x - mouse_last_x, delta_y = y - mouse_last_y;
784	+	mouse_last_x = x; mouse_last_y = y;
785	+	ADBMouseMoved(delta_x, delta_y);
786	+
787	+	// Only warp the pointer when it has reached the edge
788	+	const int MOUSE_FUDGE_FACTOR = 8;
789	+	if (x < MOUSE_FUDGE_FACTOR || x > (width - MOUSE_FUDGE_FACTOR)
790	+	|| y < MOUSE_FUDGE_FACTOR || y > (height - MOUSE_FUDGE_FACTOR)) {
791	+	XEvent event;
792	+	while (XCheckTypedEvent(x_display, MotionNotify, &event)) {
793	+	delta_x = x - mouse_last_x; delta_y = y - mouse_last_y;
794	+	mouse_last_x = x; mouse_last_y = y;
795	+	ADBMouseMoved(delta_x, delta_y);
796	+	}
797	+	mouse_last_x = width/2;
798	+	mouse_last_y = height/2;
799	+	XWarpPointer(x_display, None, w, 0, 0, 0, 0, mouse_last_x, mouse_last_y);
800	+	for (int i=0; i<10; i++) {
801	+	XMaskEvent(x_display, PointerMotionMask, &event);
802	+	if (event.xmotion.x > (mouse_last_x - MOUSE_FUDGE_FACTOR)
803	+	&& event.xmotion.x < (mouse_last_x + MOUSE_FUDGE_FACTOR)
804	+	&& event.xmotion.y > (mouse_last_y - MOUSE_FUDGE_FACTOR)
805	+	&& event.xmotion.y < (mouse_last_y + MOUSE_FUDGE_FACTOR))
806	+	break;
807	+	}
808	+	}
809	+	}
810	+
811
812		#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
813		/*
#	Line 612 | Line 859 | void driver_dga::suspend(void)
859		#endif
860		XUngrabPointer(x_display, CurrentTime);
861		XUngrabKeyboard(x_display, CurrentTime);
862	+	restore_mouse_accel();
863		XUnmapWindow(x_display, w);
864		wait_unmapped(w);
865
#	Line 639 | Line 887 | void driver_dga::resume(void)
887		XMapRaised(x_display, w);
888		wait_mapped(w);
889		XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
890	<	XGrabKeyboard(x_display, rootwin, 1, GrabModeAsync, GrabModeAsync, CurrentTime);
891	<	XGrabPointer(x_display, rootwin, 1, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
890	>	XGrabKeyboard(x_display, rootwin, True, GrabModeAsync, GrabModeAsync, CurrentTime);
891	>	XGrabPointer(x_display, rootwin, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
892	>	disable_mouse_accel();
893		#ifdef ENABLE_XF86_DGA
894		XF86DGADirectVideo(x_display, screen, XF86DGADirectGraphics | XF86DGADirectKeyb | XF86DGADirectMouse);
895		XF86DGASetViewPort(x_display, screen, 0, 0);
#	Line 787 | Line 1036 | driver_fbdev::driver_fbdev(const video_m
1036		XGrabPointer(x_display, w, True,
1037		PointerMotionMask | ButtonPressMask | ButtonReleaseMask,
1038		GrabModeAsync, GrabModeAsync, w, None, CurrentTime);
1039	+	disable_mouse_accel();
1040
1041		// Calculate bytes per row
1042		int bytes_per_row = TrivialBytesPerRow(mode.x, mode.depth);
1043
1044		// Map frame buffer
1045	<	if ((the_buffer = (uint8 *) mmap(NULL, height * bytes_per_row, PROT_READ | PROT_WRITE, MAP_PRIVATE, fbdev_fd, fb_offset)) == MAP_FAILED) {
1046	<	if ((the_buffer = (uint8 *) mmap(NULL, height * bytes_per_row, PROT_READ | PROT_WRITE, MAP_SHARED, fbdev_fd, fb_offset)) == MAP_FAILED) {
1045	>	the_buffer_size = height * bytes_per_row;
1046	>	if ((the_buffer = (uint8 *) mmap(NULL, the_buffer_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fbdev_fd, fb_offset)) == MAP_FAILED) {
1047	>	if ((the_buffer = (uint8 *) mmap(NULL, the_buffer_size, PROT_READ | PROT_WRITE, MAP_SHARED, fbdev_fd, fb_offset)) == MAP_FAILED) {
1048		char str[256];
1049		sprintf(str, GetString(STR_FBDEV_MMAP_ERR), strerror(errno));
1050		ErrorAlert(str);
#	Line 832 | Line 1083 | driver_fbdev::driver_fbdev(const video_m
1083		// Close display
1084		driver_fbdev::~driver_fbdev()
1085		{
1086	+	if (!use_vosf) {
1087	+	if (the_buffer != MAP_FAILED) {
1088	+	// don't free() the screen buffer in driver_base dtor
1089	+	munmap(the_buffer, the_buffer_size);
1090	+	the_buffer = NULL;
1091	+	}
1092	+	}
1093	+	#ifdef ENABLE_VOSF
1094	+	else {
1095	+	if (the_host_buffer != MAP_FAILED) {
1096	+	// don't free() the screen buffer in driver_base dtor
1097	+	munmap(the_host_buffer, the_buffer_size);
1098	+	the_host_buffer = NULL;
1099	+	}
1100	+	if (the_buffer_copy != VM_MAP_FAILED) {
1101	+	vm_release(the_buffer_copy, the_buffer_size);
1102	+	the_buffer_copy = NULL;
1103	+	}
1104	+	if (the_buffer != VM_MAP_FAILED) {
1105	+	vm_release(the_buffer, the_buffer_size);
1106	+	the_buffer = NULL;
1107	+	}
1108	+	}
1109	+	#endif
1110		}
1111		#endif
1112
#	Line 901 | Line 1176 | driver_xf86dga::driver_xf86dga(const vid
1176		XWarpPointer(x_display, None, rootwin, 0, 0, 0, 0, 0, 0);
1177		XGrabKeyboard(x_display, rootwin, True, GrabModeAsync, GrabModeAsync, CurrentTime);
1178		XGrabPointer(x_display, rootwin, True, PointerMotionMask | ButtonPressMask | ButtonReleaseMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
1179	+	disable_mouse_accel();
1180
1181		int v_width, v_bank, v_size;
1182		XF86DGAGetVideo(x_display, screen, (char **)&the_buffer, &v_width, &v_bank, &v_size);
#	Line 917 | Line 1193 | driver_xf86dga::driver_xf86dga(const vid
1193
1194		// Init blitting routines
1195		int bytes_per_row = TrivialBytesPerRow((v_width + 7) & ~7, mode.depth);
1196	<	#ifdef VIDEO_VOSF
1196	>	#if VIDEO_VOSF
1197		#if REAL_ADDRESSING || DIRECT_ADDRESSING
1198		// Screen_blitter_init() returns TRUE if VOSF is mandatory
1199		// i.e. the framebuffer update function is not Blit_Copy_Raw
#	Line 948 | Line 1224 | driver_xf86dga::driver_xf86dga(const vid
1224		driver_xf86dga::~driver_xf86dga()
1225		{
1226		XF86DGADirectVideo(x_display, screen, 0);
1227	+	if (!use_vosf) {
1228	+	// don't free() the screen buffer in driver_base dtor
1229	+	the_buffer = NULL;
1230	+	}
1231	+	#ifdef ENABLE_VOSF
1232	+	else {
1233	+	// don't free() the screen buffer in driver_base dtor
1234	+	the_host_buffer = NULL;
1235	+
1236	+	if (the_buffer_copy != VM_MAP_FAILED) {
1237	+	vm_release(the_buffer_copy, the_buffer_size);
1238	+	the_buffer_copy = NULL;
1239	+	}
1240	+	if (the_buffer != VM_MAP_FAILED) {
1241	+	vm_release(the_buffer, the_buffer_size);
1242	+	the_buffer = NULL;
1243	+	}
1244	+	}
1245	+	#endif
1246		#ifdef ENABLE_XF86_VIDMODE
1247		if (has_vidmode)
1248		XF86VidModeSwitchToMode(x_display, screen, x_video_modes[0]);
#	Line 1045 | Line 1340 | static void keycode_init(void)
1340		// Open display for specified mode
1341		static bool video_open(const video_mode &mode)
1342		{
1343	+	// Find best available X visual
1344	+	if (!find_visual_for_depth(mode.depth)) {
1345	+	ErrorAlert(STR_NO_XVISUAL_ERR);
1346	+	return false;
1347	+	}
1348	+
1349	+	// Create color maps
1350	+	if (color_class == PseudoColor || color_class == DirectColor) {
1351	+	cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1352	+	cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1353	+	} else {
1354	+	cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocNone);
1355	+	cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocNone);
1356	+	}
1357	+
1358	+	// Find pixel format of direct modes
1359	+	if (color_class == DirectColor || color_class == TrueColor) {
1360	+	rshift = gshift = bshift = 0;
1361	+	rloss = gloss = bloss = 8;
1362	+	uint32 mask;
1363	+	for (mask=vis->red_mask; !(mask&1); mask>>=1)
1364	+	++rshift;
1365	+	for (; mask&1; mask>>=1)
1366	+	--rloss;
1367	+	for (mask=vis->green_mask; !(mask&1); mask>>=1)
1368	+	++gshift;
1369	+	for (; mask&1; mask>>=1)
1370	+	--gloss;
1371	+	for (mask=vis->blue_mask; !(mask&1); mask>>=1)
1372	+	++bshift;
1373	+	for (; mask&1; mask>>=1)
1374	+	--bloss;
1375	+	}
1376	+
1377	+	// Preset palette pixel values for CLUT or gamma table
1378	+	if (color_class == DirectColor) {
1379	+	int num = vis->map_entries;
1380	+	for (int i=0; i<num; i++) {
1381	+	int c = (i * 256) / num;
1382	+	palette[i].pixel = map_rgb(c, c, c);
1383	+	palette[i].flags = DoRed | DoGreen | DoBlue;
1384	+	}
1385	+	} else if (color_class == PseudoColor) {
1386	+	for (int i=0; i<256; i++) {
1387	+	palette[i].pixel = i;
1388	+	palette[i].flags = DoRed | DoGreen | DoBlue;
1389	+	}
1390	+	}
1391	+
1392		// Load gray ramp to color map
1393	<	int num = (vis->c_class == DirectColor ? vis->map_entries : 256);
1393	>	int num = (color_class == DirectColor ? vis->map_entries : 256);
1394		for (int i=0; i<num; i++) {
1395		int c = (i * 256) / num;
1396		palette[i].red = c * 0x0101;
1397		palette[i].green = c * 0x0101;
1398		palette[i].blue = c * 0x0101;
1055	–	if (vis->c_class == PseudoColor)
1056	–	palette[i].pixel = i;
1057	–	palette[i].flags = DoRed | DoGreen | DoBlue;
1399		}
1400	<	if (cmap[0] && cmap[1]) {
1400	>	if (color_class == PseudoColor || color_class == DirectColor) {
1401		XStoreColors(x_display, cmap[0], palette, num);
1402		XStoreColors(x_display, cmap[1], palette, num);
1403		}
1404
1405		#ifdef ENABLE_VOSF
1406		// Load gray ramp to 8->16/32 expand map
1407	<	if (!IsDirectMode(mode) && (vis->c_class == TrueColor || vis->c_class == DirectColor))
1407	>	if (!IsDirectMode(mode) && xdepth > 8)
1408		for (int i=0; i<256; i++)
1409		ExpandMap[i] = map_rgb(i, i, i);
1410		#endif
#	Line 1094 | Line 1435 | static bool video_open(const video_mode
1435
1436		#ifdef ENABLE_VOSF
1437		if (use_vosf) {
1438	<	// Initialize the mainBuffer structure
1439	<	if (!video_init_buffer()) {
1438	>	// Initialize the VOSF system
1439	>	if (!video_vosf_init()) {
1440		ErrorAlert(STR_VOSF_INIT_ERR);
1441		return false;
1442		}
1102	–
1103	–	// Initialize the handler for SIGSEGV
1104	–	if (!sigsegv_install_handler(screen_fault_handler)) {
1105	–	ErrorAlert("Could not initialize Video on SEGV signals");
1106	–	return false;
1107	–	}
1443		}
1444		#endif
1445
#	Line 1155 | Line 1490 | bool VideoInit(bool classic)
1490		// Find screen and root window
1491		screen = XDefaultScreen(x_display);
1492		rootwin = XRootWindow(x_display, screen);
1493	<
1494	<	// Get screen depth
1495	<	xdepth = DefaultDepth(x_display, screen);
1493	>
1494	>	// Get sorted list of available depths
1495	>	avail_depths = XListDepths(x_display, screen, &num_depths);
1496	>	if (avail_depths == NULL) {
1497	>	ErrorAlert(STR_UNSUPP_DEPTH_ERR);
1498	>	return false;
1499	>	}
1500	>	sort(avail_depths, avail_depths + num_depths);
1501
1502		#ifdef ENABLE_FBDEV_DGA
1503		// Frame buffer name
#	Line 1197 | Line 1537 | bool VideoInit(bool classic)
1537		black_pixel = BlackPixel(x_display, screen);
1538		white_pixel = WhitePixel(x_display, screen);
1539
1200	–	// Get appropriate visual
1201	–	int color_class;
1202	–	switch (xdepth) {
1203	–	case 1:
1204	–	color_class = StaticGray;
1205	–	break;
1206	–	case 8:
1207	–	color_class = PseudoColor;
1208	–	break;
1209	–	case 15:
1210	–	case 16:
1211	–	case 24:
1212	–	case 32: // Try DirectColor first, as this will allow gamma correction
1213	–	color_class = DirectColor;
1214	–	if (!XMatchVisualInfo(x_display, screen, xdepth, color_class, &visualInfo))
1215	–	color_class = TrueColor;
1216	–	break;
1217	–	default:
1218	–	ErrorAlert(STR_UNSUPP_DEPTH_ERR);
1219	–	return false;
1220	–	}
1221	–	if (!XMatchVisualInfo(x_display, screen, xdepth, color_class, &visualInfo)) {
1222	–	ErrorAlert(STR_NO_XVISUAL_ERR);
1223	–	return false;
1224	–	}
1225	–	if (visualInfo.depth != xdepth) {
1226	–	ErrorAlert(STR_NO_XVISUAL_ERR);
1227	–	return false;
1228	–	}
1229	–	vis = visualInfo.visual;
1230	–
1231	–	// Create color maps
1232	–	if (color_class == PseudoColor || color_class == DirectColor) {
1233	–	cmap[0] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1234	–	cmap[1] = XCreateColormap(x_display, rootwin, vis, AllocAll);
1235	–	}
1236	–
1237	–	// Find pixel format of direct modes
1238	–	if (color_class == DirectColor || color_class == TrueColor) {
1239	–	rshift = gshift = bshift = 0;
1240	–	rloss = gloss = bloss = 8;
1241	–	uint32 mask;
1242	–	for (mask=vis->red_mask; !(mask&1); mask>>=1)
1243	–	++rshift;
1244	–	for (; mask&1; mask>>=1)
1245	–	--rloss;
1246	–	for (mask=vis->green_mask; !(mask&1); mask>>=1)
1247	–	++gshift;
1248	–	for (; mask&1; mask>>=1)
1249	–	--gloss;
1250	–	for (mask=vis->blue_mask; !(mask&1); mask>>=1)
1251	–	++bshift;
1252	–	for (; mask&1; mask>>=1)
1253	–	--bloss;
1254	–	}
1255	–
1256	–	// Preset palette pixel values for gamma table
1257	–	if (color_class == DirectColor) {
1258	–	int num = vis->map_entries;
1259	–	for (int i=0; i<num; i++) {
1260	–	int c = (i * 256) / num;
1261	–	palette[i].pixel = map_rgb(c, c, c);
1262	–	}
1263	–	}
1264	–
1540		// Get screen mode from preferences
1541		const char *mode_str;
1542		if (classic_mode)
#	Line 1296 | Line 1571 | bool VideoInit(bool classic)
1571		default_height = DisplayHeight(x_display, screen);
1572
1573		// Mac screen depth follows X depth
1574	<	video_depth default_depth = DepthModeForPixelDepth(xdepth);
1574	>	video_depth default_depth = VDEPTH_1BIT;
1575	>	switch (DefaultDepth(x_display, screen)) {
1576	>	case 8:
1577	>	default_depth = VDEPTH_8BIT;
1578	>	break;
1579	>	case 15: case 16:
1580	>	default_depth = VDEPTH_16BIT;
1581	>	break;
1582	>	case 24: case 32:
1583	>	default_depth = VDEPTH_32BIT;
1584	>	break;
1585	>	}
1586
1587		// Construct list of supported modes
1588		if (display_type == DISPLAY_WINDOW) {
1589		if (classic)
1590		add_mode(512, 342, 0x80, 64, VDEPTH_1BIT);
1591		else {
1592	<	if (default_depth != VDEPTH_1BIT)
1593	<	add_window_modes(VDEPTH_1BIT);  // 1-bit modes are always available
1594	<	#ifdef ENABLE_VOSF
1309	<	if (default_depth > VDEPTH_8BIT) {
1310	<	add_window_modes(VDEPTH_2BIT);  // 2, 4 and 8-bit modes are also possible on 16/32-bit screens with VOSF blitters
1311	<	add_window_modes(VDEPTH_4BIT);
1312	<	add_window_modes(VDEPTH_8BIT);
1592	>	for (unsigned d=VDEPTH_1BIT; d<=VDEPTH_32BIT; d++) {
1593	>	if (find_visual_for_depth(video_depth(d)))
1594	>	add_window_modes(video_depth(d));
1595		}
1314	–	#endif
1315	–	add_window_modes(default_depth);
1596		}
1597		} else
1598		add_mode(default_width, default_height, 0x80, TrivialBytesPerRow(default_width, default_depth), default_depth);
1599	+	if (VideoModes.empty()) {
1600	+	ErrorAlert(STR_NO_XVISUAL_ERR);
1601	+	return false;
1602	+	}
1603	+	video_init_depth_list();
1604	+
1605	+	#if DEBUG
1606	+	D(bug("Available video modes:\n"));
1607	+	vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
1608	+	while (i != end) {
1609	+	int bits = 1 << i->depth;
1610	+	if (bits == 16)
1611	+	bits = 15;
1612	+	else if (bits == 32)
1613	+	bits = 24;
1614	+	D(bug(" %dx%d (ID %02x), %d colors\n", i->x, i->y, i->resolution_id, 1 << bits));
1615	+	++i;
1616	+	}
1617	+	#endif
1618
1619		// Find requested default mode and open display
1620		if (VideoModes.size() == 1)
#	Line 1356 | Line 1655 | static void video_close(void)
1655		XSync(x_display, false);
1656
1657		#ifdef ENABLE_VOSF
1359	–	// Deinitialize VOSF
1658		if (use_vosf) {
1659	<	if (mainBuffer.pageInfo) {
1660	<	free(mainBuffer.pageInfo);
1363	<	mainBuffer.pageInfo = NULL;
1364	<	}
1365	<	if (mainBuffer.dirtyPages) {
1366	<	free(mainBuffer.dirtyPages);
1367	<	mainBuffer.dirtyPages = NULL;
1368	<	}
1659	>	// Deinitialize VOSF
1660	>	video_vosf_exit();
1661		}
1662		#endif
1663
1664		// Close display
1665		delete drv;
1666		drv = NULL;
1375	–	}
1376	–
1377	–	void VideoExit(void)
1378	–	{
1379	–	// Close display
1380	–	video_close();
1667
1668		// Free colormaps
1669		if (cmap[0]) {
#	Line 1388 | Line 1674 | void VideoExit(void)
1674		XFreeColormap(x_display, cmap[1]);
1675		cmap[1] = 0;
1676		}
1677	+	}
1678	+
1679	+	void VideoExit(void)
1680	+	{
1681	+	// Close display
1682	+	video_close();
1683
1684		#ifdef ENABLE_XF86_VIDMODE
1685		// Free video mode list
#	Line 1404 | Line 1696 | void VideoExit(void)
1696		fbdev_fd = -1;
1697		}
1698		#endif
1699	+
1700	+	// Free depth list
1701	+	if (avail_depths) {
1702	+	XFree(avail_depths);
1703	+	avail_depths = NULL;
1704	+	}
1705		}
1706
1707
#	Line 1445 | Line 1743 | void video_set_palette(uint8 *pal, int n
1743
1744		// Convert colors to XColor array
1745		int num_out = 256;
1746	+	bool stretch = false;
1747		if (IsDirectMode(VideoMonitor.mode)) {
1748		// If X is in 565 mode we have to stretch the gamma table from 32 to 64 entries
1749		num_out = vis->map_entries;
1750	+	stretch = true;
1751		}
1752		XColor *p = palette;
1753		for (int i=0; i<num_out; i++) {
1754	<	int c = (i * num_in) / num_out;
1754	>	int c = (stretch ? (i * num_in) / num_out : i);
1755		p->red = pal[c*3 + 0] * 0x0101;
1756		p->green = pal[c*3 + 1] * 0x0101;
1757		p->blue = pal[c*3 + 2] * 0x0101;
1458	–	if (vis->c_class == PseudoColor)
1459	–	p->pixel = i;
1460	–	p->flags = DoRed | DoGreen | DoBlue;
1758		p++;
1759		}
1760
1761		#ifdef ENABLE_VOSF
1762		// Recalculate pixel color expansion map
1763	<	if (!IsDirectMode(VideoMonitor.mode) && (vis->c_class == TrueColor || vis->c_class == DirectColor)) {
1763	>	if (!IsDirectMode(VideoMonitor.mode) && xdepth > 8) {
1764		for (int i=0; i<256; i++) {
1765	<	int c = i % num_in; // If there are less than 256 colors, we repeat the first entries (this makes color expansion easier)
1765	>	int c = i & (num_in-1); // If there are less than 256 colors, we repeat the first entries (this makes color expansion easier)
1766		ExpandMap[i] = map_rgb(pal[c*3+0], pal[c*3+1], pal[c*3+2]);
1767		}
1768
#	Line 1502 | Line 1799 | void video_switch_to_mode(const video_mo
1799
1800
1801		/*
1802	<	*  Translate key event to Mac keycode
1802	>	*  Translate key event to Mac keycode, returns -1 if no keycode was found
1803	>	*  and -2 if the key was recognized as a hotkey
1804		*/
1805
1806	<	static int kc_decode(KeySym ks)
1806	>	static int kc_decode(KeySym ks, bool key_down)
1807		{
1808		switch (ks) {
1809		case XK_A: case XK_a: return 0x00;
#	Line 1558 | Line 1856 | static int kc_decode(KeySym ks)
1856		case XK_period: case XK_greater: return 0x2f;
1857		case XK_slash: case XK_question: return 0x2c;
1858
1859	<	#if defined(ENABLE_XF86_DGA) || defined(ENABLE_FBDEV_DGA)
1562	<	case XK_Tab: if (ctrl_down) {drv->suspend(); return -1;} else return 0x30;
1563	<	#else
1564	<	case XK_Tab: return 0x30;
1565	<	#endif
1859	>	case XK_Tab: if (ctrl_down) {if (key_down) drv->suspend(); return -2;} else return 0x30;
1860		case XK_Return: return 0x24;
1861		case XK_space: return 0x31;
1862		case XK_BackSpace: return 0x33;
#	Line 1596 | Line 1890 | static int kc_decode(KeySym ks)
1890		case XK_Left: return 0x3b;
1891		case XK_Right: return 0x3c;
1892
1893	<	case XK_Escape: if (ctrl_down) {quit_full_screen = true; emerg_quit = true; return -1;} else return 0x35;
1893	>	case XK_Escape: if (ctrl_down) {if (key_down) { quit_full_screen = true; emerg_quit = true; } return -2;} else return 0x35;
1894
1895	<	case XK_F1: if (ctrl_down) {SysMountFirstFloppy(); return -1;} else return 0x7a;
1895	>	case XK_F1: if (ctrl_down) {if (key_down) SysMountFirstFloppy(); return -2;} else return 0x7a;
1896		case XK_F2: return 0x78;
1897		case XK_F3: return 0x63;
1898		case XK_F4: return 0x76;
1899	<	case XK_F5: return 0x60;
1899	>	case XK_F5: if (ctrl_down) {if (key_down) drv->toggle_mouse_grab(); return -2;} else return 0x60;
1900		case XK_F6: return 0x61;
1901		case XK_F7: return 0x62;
1902		case XK_F8: return 0x64;
#	Line 1650 | Line 1944 | static int kc_decode(KeySym ks)
1944		return -1;
1945		}
1946
1947	<	static int event2keycode(XKeyEvent &ev)
1947	>	static int event2keycode(XKeyEvent &ev, bool key_down)
1948		{
1949		KeySym ks;
1656	–	int as;
1950		int i = 0;
1951
1952		do {
1953		ks = XLookupKeysym(&ev, i++);
1954	<	as = kc_decode(ks);
1955	<	if (as != -1)
1954	>	int as = kc_decode(ks, key_down);
1955	>	if (as >= 0)
1956	>	return as;
1957	>	if (as == -2)
1958		return as;
1959		} while (ks != NoSymbol);
1960
#	Line 1678 | Line 1973 | static void handle_events(void)
1973		XNextEvent(x_display, &event);
1974
1975		switch (event.type) {
1976	+
1977		// Mouse button
1978		case ButtonPress: {
1979		unsigned int button = event.xbutton.button;
#	Line 1706 | Line 2002 | static void handle_events(void)
2002		}
2003
2004		// Mouse moved
1709	–	case EnterNotify:
2005		case MotionNotify:
2006	<	ADBMouseMoved(event.xmotion.x, event.xmotion.y);
2006	>	drv->mouse_moved(event.xmotion.x, event.xmotion.y);
2007	>	break;
2008	>
2009	>	// Mouse entered window
2010	>	case EnterNotify:
2011	>	if (event.xcrossing.mode != NotifyGrab && event.xcrossing.mode != NotifyUngrab)
2012	>	drv->mouse_moved(event.xmotion.x, event.xmotion.y);
2013		break;
2014
2015		// Keyboard
2016		case KeyPress: {
2017	<	int code;
2017	>	int code = -1;
2018		if (use_keycodes) {
2019	<	event2keycode(event.xkey);      // This is called to process the hotkeys
2020	<	code = keycode_table[event.xkey.keycode & 0xff];
2019	>	if (event2keycode(event.xkey, true) != -2)      // This is called to process the hotkeys
2020	>	code = keycode_table[event.xkey.keycode & 0xff];
2021		} else
2022	<	code = event2keycode(event.xkey);
2023	<	if (code != -1) {
2022	>	code = event2keycode(event.xkey, true);
2023	>	if (code >= 0) {
2024		if (!emul_suspended) {
2025		if (code == 0x39) {     // Caps Lock pressed
2026		if (caps_on) {
#	Line 1741 | Line 2042 | static void handle_events(void)
2042		break;
2043		}
2044		case KeyRelease: {
2045	<	int code;
2045	>	int code = -1;
2046		if (use_keycodes) {
2047	<	event2keycode(event.xkey);      // This is called to process the hotkeys
2048	<	code = keycode_table[event.xkey.keycode & 0xff];
2047	>	if (event2keycode(event.xkey, false) != -2)     // This is called to process the hotkeys
2048	>	code = keycode_table[event.xkey.keycode & 0xff];
2049		} else
2050	<	code = event2keycode(event.xkey);
2051	<	if (code != -1 && code != 0x39) {       // Don't propagate Caps Lock releases
2050	>	code = event2keycode(event.xkey, false);
2051	>	if (code >= 0 && code != 0x39) {        // Don't propagate Caps Lock releases
2052		ADBKeyUp(code);
2053		if (code == 0x36)
2054		ctrl_down = false;
#	Line 2011 | Line 2312 | static void update_display_static(driver
2312
2313		static inline void possibly_quit_dga_mode()
2314		{
2315	<	// Quit DGA mode if requested
2315	>	// Quit DGA mode if requested (something terrible has happened and we
2316	>	// want to give control back to the user)
2317		if (quit_full_screen) {
2318		quit_full_screen = false;
2319		delete drv;
#	Line 2019 | Line 2321 | static inline void possibly_quit_dga_mod
2321		}
2322		}
2323
2324	+	static inline void possibly_ungrab_mouse()
2325	+	{
2326	+	// Ungrab mouse if requested (something terrible has happened and we
2327	+	// want to give control back to the user)
2328	+	if (quit_full_screen) {
2329	+	quit_full_screen = false;
2330	+	if (drv)
2331	+	drv->ungrab_mouse();
2332	+	}
2333	+	}
2334	+
2335		static inline void handle_palette_changes(void)
2336		{
2337		LOCK_PALETTE;
#	Line 2035 | Line 2348 | static void video_refresh_dga(void)
2348		{
2349		// Quit DGA mode if requested
2350		possibly_quit_dga_mode();
2038	–
2039	–	// Handle X events
2040	–	handle_events();
2041	–
2042	–	// Handle palette changes
2043	–	handle_palette_changes();
2351		}
2352
2353		#ifdef ENABLE_VOSF
#	Line 2050 | Line 2357 | static void video_refresh_dga_vosf(void)
2357		// Quit DGA mode if requested
2358		possibly_quit_dga_mode();
2359
2053	–	// Handle X events
2054	–	handle_events();
2055	–
2056	–	// Handle palette changes
2057	–	handle_palette_changes();
2058	–
2360		// Update display (VOSF variant)
2361		static int tick_counter = 0;
2362		if (++tick_counter >= frame_skip) {
#	Line 2071 | Line 2372 | static void video_refresh_dga_vosf(void)
2372
2373		static void video_refresh_window_vosf(void)
2374		{
2375	<	// Quit DGA mode if requested
2376	<	possibly_quit_dga_mode();
2076	<
2077	<	// Handle X events
2078	<	handle_events();
2079	<
2080	<	// Handle palette changes
2081	<	handle_palette_changes();
2375	>	// Ungrab mouse if requested
2376	>	possibly_ungrab_mouse();
2377
2378		// Update display (VOSF variant)
2379		static int tick_counter = 0;
#	Line 2096 | Line 2391 | static void video_refresh_window_vosf(vo
2391
2392		static void video_refresh_window_static(void)
2393		{
2394	<	// Handle X events
2395	<	handle_events();
2396	<
2102	<	// Handle_palette changes
2103	<	handle_palette_changes();
2104	<
2394	>	// Ungrab mouse if requested
2395	>	possibly_ungrab_mouse();
2396	>
2397		// Update display (static variant)
2398		static int tick_counter = 0;
2399		if (++tick_counter >= frame_skip) {
#	Line 2112 | Line 2404 | static void video_refresh_window_static(
2404
2405		static void video_refresh_window_dynamic(void)
2406		{
2407	<	// Handle X events
2408	<	handle_events();
2409	<
2118	<	// Handle_palette changes
2119	<	handle_palette_changes();
2120	<
2407	>	// Ungrab mouse if requested
2408	>	possibly_ungrab_mouse();
2409	>
2410		// Update display (dynamic variant)
2411		static int tick_counter = 0;
2412		tick_counter++;
#	Line 2153 | Line 2442 | static void VideoRefreshInit(void)
2442		}
2443		}
2444
2445	+	// This function is called on non-threaded platforms from a timer interrupt
2446		void VideoRefresh(void)
2447		{
2448		// We need to check redraw_thread_active to inhibit refreshed during
2449		// mode changes on non-threaded platforms
2450	<	if (redraw_thread_active)
2451	<	video_refresh();
2450	>	if (!redraw_thread_active)
2451	>	return;
2452	>
2453	>	// Handle X events
2454	>	handle_events();
2455	>
2456	>	// Handle palette changes
2457	>	handle_palette_changes();
2458	>
2459	>	// Update display
2460	>	video_refresh();
2461		}
2462
2463	+	const int VIDEO_REFRESH_HZ = 60;
2464	+	const int VIDEO_REFRESH_DELAY = 1000000 / VIDEO_REFRESH_HZ;
2465	+
2466		#ifdef HAVE_PTHREADS
2467		static void *redraw_func(void *arg)
2468		{
2469	+	int fd = ConnectionNumber(x_display);
2470	+
2471		uint64 start = GetTicks_usec();
2472		int64 ticks = 0;
2473	<	uint64 next = GetTicks_usec();
2473	>	uint64 next = GetTicks_usec() + VIDEO_REFRESH_DELAY;
2474	>
2475		while (!redraw_thread_cancel) {
2476	<	video_refresh();
2172	<	next += 16667;
2476	>
2477		int64 delay = next - GetTicks_usec();
2478	<	if (delay > 0)
2479	<	Delay_usec(delay);
2480	<	else if (delay < -16667)
2478	>	if (delay < -VIDEO_REFRESH_DELAY) {
2479	>
2480	>	// We are lagging far behind, so we reset the delay mechanism
2481		next = GetTicks_usec();
2482	<	ticks++;
2482	>
2483	>	} else if (delay <= 0) {
2484	>
2485	>	// Delay expired, refresh display
2486	>	handle_events();
2487	>	handle_palette_changes();
2488	>	video_refresh();
2489	>	next += VIDEO_REFRESH_DELAY;
2490	>	ticks++;
2491	>
2492	>	} else {
2493	>
2494	>	// No display refresh pending, check for X events
2495	>	fd_set readfds;
2496	>	FD_ZERO(&readfds);
2497	>	FD_SET(fd, &readfds);
2498	>	struct timeval timeout;
2499	>	timeout.tv_sec = 0;
2500	>	timeout.tv_usec = delay;
2501	>	if (select(fd+1, &readfds, NULL, NULL, &timeout) > 0)
2502	>	handle_events();
2503	>	}
2504		}
2505	+
2506		uint64 end = GetTicks_usec();
2507	<	// printf("%Ld ticks in %Ld usec = %Ld ticks/sec\n", ticks, end - start, ticks * 1000000 / (end - start));
2507	>	D(bug("%Ld refreshes in %Ld usec = %f refreshes/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
2508		return NULL;
2509		}
2510		#endif

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