/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// vid_sunxil.c -- uses X to setup windows and XIL to copy images (scaled as needed)
// 		   to screen

#define _BSD
#define BYTE_DEFINED 1

#include <sys/time.h>
#include <sys/types.h>
#include <errno.h>
#include <thread.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <xil/xil.h>

#include "quakedef.h"
#include "d_local.h"

#define MIN_WIDTH 320
#define MIN_HEIGHT 200

cvar_t		_windowed_mouse = {"_windowed_mouse", "0", true};
cvar_t		m_filter = {"m_filter", "0", true};
float old_windowed_mouse;

// The following X property format is defined in Motif 1.1's
// Xm/MwmUtils.h, but QUAKE should not depend on that header
// file. Note: Motif 1.2 expanded this structure with
// uninteresting fields (to QUAKE) so just stick with the
// smaller Motif 1.1 structure.

#define MWM_HINTS_DECORATIONS   2
typedef struct
{
	long flags;
	long functions;
	long decorations;
	long input_mode;
} MotifWmHints;

#define MAX_COLUMN_SIZE	11

#define MAX_MODEDESCS	(MAX_COLUMN_SIZE*3)

typedef struct
{
	int		modenum;
	int		iscur;
	char	desc[256];
} modedesc_t;

extern void M_Menu_Options_f (void);
extern void M_Print (int cx, int cy, char *str);
extern void M_PrintWhite (int cx, int cy, char *str);
extern void M_DrawCharacter (int cx, int line, int num);
extern void M_DrawTransPic (int x, int y, qpic_t *pic);
extern void M_DrawPic (int x, int y, qpic_t *pic);

extern int sb_updates;

qboolean        mouse_avail;
int             mouse_buttons = 3;
int             mouse_oldbuttonstate;
int             mouse_buttonstate;
float   mouse_x, mouse_y;
float   old_mouse_x, old_mouse_y;
int p_mouse_x;
int p_mouse_y;

typedef struct
{
	int input;
	int output;
} keymap_t;

viddef_t vid; // global video state
unsigned short       d_8to16table[256];

int		num_shades = 32;

int	d_con_indirect = 0;

int		vid_buffersize;

#define STD_EVENT_MASK \
( \
	StructureNotifyMask | \
	KeyPressMask | \
	KeyReleaseMask | \
	ButtonPressMask | \
	ButtonReleaseMask | \
	ExposureMask | \
	PointerMotionMask | \
	FocusChangeMask \
)

int		VGA_width, VGA_height, VGA_rowbytes, VGA_bufferrowbytes, VGA_planar;
byte	*VGA_pagebase;

qboolean			x_fullscreen = true;
Display				*x_disp = NULL;
int				x_screen, x_screen_width, x_screen_height;
int				x_center_width, x_center_height;
int				x_std_event_mask = STD_EVENT_MASK;
Window				x_win, x_root_win;
qboolean			x_focus = true;
int				global_dx, global_dy;


static Colormap			x_cmap;
static GC			x_gc;
static Visual			*x_vis;
static XVisualInfo		*x_visinfo;
static Atom			aHints = NULL;
static Atom			aWMDelete = NULL;

static qboolean			oktodraw = false;
static qboolean			X11_active = false;


static int verbose = 1;

static byte current_palette[768];

cvar_t pixel_multiply = {"pixel_multiply", "2", true};
int current_pixel_multiply = 2;

#define PM(a) (int)((current_pixel_multiply)?((a)*current_pixel_multiply):(a))
#define MP(a) (int)((current_pixel_multiply)?((a)/current_pixel_multiply):(a))

static int 				render_pipeline[2];
static XilSystemState 			state;
static XilImage				display_image  = NULL;
static XilImage				quake_image  = NULL;
static int				use_mt = 0;
static int				count_frames = 0;

/*
================
D_BeginDirectRect
================
*/
void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
// direct drawing of the "accessing disk" icon isn't supported under Nextstep
}


/*
================
D_EndDirectRect
================
*/
void D_EndDirectRect (int x, int y, int width, int height)
{
// direct drawing of the "accessing disk" icon isnt supported under Nextstep
}


/*
=================
VID_Gamma_f

Keybinding command
=================
*/

byte vid_gamma[256];

void VID_Gamma_f (void)
{

	float	g, f, inf;
	int		i;
	
	if (Cmd_Argc () == 2)
	{
		g = Q_atof (Cmd_Argv (1));
		
		for (i = 0 ; i < 255 ; i++)
		{
			f = pow ( (i + 1) / 256.0, g);
			inf = f * 255 + 0.5;
			if (inf < 0)
				inf = 0;
			if (inf > 255)
				inf = 255;
			vid_gamma[i] = inf;
		}
		
		VID_SetPalette (current_palette);
		
		vid.recalc_refdef = 1;				// force a surface cache flush
	}
	
}

qboolean CheckPixelMultiply (void)
{
	int m;
	int w, h;
	XWindowAttributes wattr;
	XWindowChanges chg;
	unsigned int value_mask;
	int old_pixel;
	
	if ( (m = (int) pixel_multiply.value) != current_pixel_multiply)
	{
		if (m < 1)
			m = 1;
		if (m > 4)
			m = 4;
			
		old_pixel = current_pixel_multiply;
		current_pixel_multiply = m;
		Cvar_SetValue ("pixel_multiply", m);
		
		if (XGetWindowAttributes (x_disp, x_win, & wattr) == 0)
			return true; // ???
			
		memset (&chg, 0, sizeof (chg));
		chg.width = wattr.width / old_pixel * current_pixel_multiply;
		chg.height = wattr.height / old_pixel * current_pixel_multiply;
		
		if (chg.width < MIN_WIDTH * current_pixel_multiply)
			chg.width = MIN_WIDTH * current_pixel_multiply;
		if (chg.height < MIN_HEIGHT * current_pixel_multiply)
			chg.height = MIN_HEIGHT * current_pixel_multiply;
			
		XConfigureWindow (x_disp, x_win, CWWidth | CWHeight, &chg);
		
		vid.width = MP (wattr.width) & ~3;
		vid.height = MP (wattr.height);
		
		if (vid.width < 320)
			vid.width = 320;
		if (vid.height < 200)
			vid.height = 200;
		VID_ResetFramebuffer();
		
		return true;
	}
	return false;
}

// ========================================================================
// Tragic death handler
// ========================================================================

void TragicDeath (int signal_num)
{
	//XAutoRepeatOn(x_disp);
	XCloseDisplay (x_disp);
	Sys_Error ("This death brought to you by the number %d\n", signal_num);
}

// ========================================================================
// makes a null cursor
// ========================================================================

static Cursor CreateNullCursor (Display *display, Window root)
{
	Pixmap cursormask;
	XGCValues xgc;
	GC gc;
	XColor dummycolour;
	Cursor cursor;
	
	cursormask = XCreatePixmap (display, root, 1, 1, 1/*depth*/);
	xgc.function = GXclear;
	gc =  XCreateGC (display, cursormask, GCFunction, &xgc);
	XFillRectangle (display, cursormask, gc, 0, 0, 1, 1);
	dummycolour.pixel = 0;
	dummycolour.red = 0;
	dummycolour.flags = 04;
	cursor = XCreatePixmapCursor (display, cursormask, cursormask,
								  &dummycolour, &dummycolour, 0, 0);
	XFreePixmap (display, cursormask);
	XFreeGC (display, gc);
	return cursor;
}


void VID_MenuDraw (void)
{
	qpic_t		*p;
	char		*ptr;
	int			i, j, column, row, dup;
	char		temp[100];
	
	p = Draw_CachePic ("gfx/vidmodes.lmp");
	M_DrawPic ( (320 - p->width) / 2, 4, p);
	M_Print (4 * 8, 36 + MAX_COLUMN_SIZE * 8 + 8, "Video mode switching unavailable");
	M_Print (9 * 8, 36 + MAX_COLUMN_SIZE * 8 + 8 * 6, "Press any key...");
}

void VID_MenuKey (int key)
{
	M_Menu_Options_f ();
}

// Called at startup to set up translation tables, takes 256 8 bit RGB values
// the palette data will go away after the call, so it must be copied off if
// the video driver will need it again

byte	surfcache[1024*1024];

//
// VID_SetWindowTitle - set the window and icon titles
//

void VID_SetWindowTitle (Window win, char *pszName)
{
	XTextProperty	textprop;
	XWMHints		*wmHints;
	
	// Setup ICCCM properties
	textprop.value = (unsigned char *) pszName;
	textprop.encoding = XA_STRING;
	textprop.format = 8;
	textprop.nitems = strlen (pszName);
	wmHints = XAllocWMHints();
	wmHints->initial_state = NormalState;
	wmHints->flags = StateHint;
	XSetWMProperties (x_disp, win, &textprop, &textprop,
					  // Only put WM_COMMAND property on first window.
					  com_argv, com_argc, NULL, NULL, NULL);
	XFree (wmHints);
	
	aWMDelete = XInternAtom (x_disp, "WM_DELETE_WINDOW", False);
	XSetWMProtocols (x_disp, win, &aWMDelete, 1);
}

//
// VID_FullScreen - open the window in full screen mode
//

qboolean VID_FullScreen (Window win)
{
	MotifWmHints    hints;
	XWindowChanges  changes;
	
	aHints = XInternAtom (x_disp, "_MOTIF_WM_HINTS", 0);
	if (aHints == None)
	{
		Con_Printf ("Could not intern X atom for _MOTIF_WM_HINTS.");
		return (false);
	}
	
	hints.flags = MWM_HINTS_DECORATIONS;
	hints.decorations = 0; // Absolutely no decorations.
	XChangeProperty (x_disp, win, aHints, aHints, 32, PropModeReplace, (unsigned char *) &hints, 4);
	
	changes.x = 0;
	changes.y = 0;
	changes.width = x_screen_width;
	changes.height = x_screen_height;
	changes.stack_mode = TopIf;
	XConfigureWindow (x_disp, win, CWX | CWY | CWWidth | CWHeight | CWStackMode, &changes);
	return (true);
}

void	VID_Init (unsigned char *palette)
{

	int pnum, i;
	XVisualInfo template;
	int num_visuals;
	int template_mask;
	int w, h;
	
	int desired_width = 320, desired_height = 200;
	
	Cmd_AddCommand ("gamma", VID_Gamma_f);
	
	Cvar_RegisterVariable (&pixel_multiply);
	
	if (pipe (render_pipeline) < 0)
		Sys_Error ("VID_Init: pipe");
		
	for (i = 0 ; i < 256 ; i++)
		vid_gamma[i] = i;
		
	vid.width = 320;
	vid.height = 200;
	vid.aspect = 1.0;
	vid.numpages = 2;
	vid.colormap = host_colormap;
	vid.fullbright = 256 - LittleLong (* ( (int *) vid.colormap + 2048));
	//vid.cbits = VID_CBITS;
	//vid.grades = VID_GRADES;
	
	srandom (getpid());
	
	verbose = COM_CheckParm ("-verbose");
	count_frames = COM_CheckParm ("-count_frames");
	
//
// open the display
//
	x_disp = XOpenDisplay (0);
	
	if (!x_disp)
	{
		if (getenv ("DISPLAY"))
			Sys_Error ("VID: Could not open display [%s]\n",
					   getenv ("DISPLAY"));
		else
			Sys_Error ("VID: Could not open local display\n");
	}
	
	x_screen = DefaultScreen (x_disp);
	x_screen_width = WidthOfScreen (ScreenOfDisplay (x_disp, x_screen));
	x_screen_height = HeightOfScreen (ScreenOfDisplay (x_disp, x_screen));
	
	x_center_width  = x_screen_width / 2;
	
	x_center_height = x_screen_height / 2;
	
	Con_Printf ("Using screen %d: %dx%d\n", x_screen, x_screen_width, x_screen_height);
	
	x_root_win = DefaultRootWindow (x_disp);
	
	//XAutoRepeatOff(x_disp);
	
// for debugging only
	if (verbose)
		XSynchronize (x_disp, True);
		
//
// check for command-line window size
//
	if ( (pnum = COM_CheckParm ("-winsize")))
	{
		if (pnum >= com_argc - 2)
			Sys_Error ("VID: -winsize <width> <height>\n");
		desired_width = Q_atoi (com_argv[pnum+1]);
		desired_height = Q_atoi (com_argv[pnum+2]);
		if (desired_width < 1 || desired_height < 1)
			Sys_Error ("VID: Bad window width/height\n");
	}
	
	template_mask = VisualScreenMask; // make sure we get the right one
	template.screen = x_screen;
//
// specify a visual id
//
	if ( (pnum = COM_CheckParm ("-visualid")))
	{
		if (pnum >= com_argc - 1)
			Sys_Error ("VID: -visualid <id#>\n");
		template.visualid = Q_atoi (com_argv[pnum+1]);
		template_mask |= VisualIDMask;
	}
	else
	{
		// If not specified, find an 8 bit visual since others don't work
//		template.depth = 8;
//		template_mask |= VisualDepthMask;
		int screen;
		screen = XDefaultScreen (x_disp);
		template.visualid =
		XVisualIDFromVisual (XDefaultVisual (x_disp, screen));
		template_mask = VisualIDMask;
	}
//
// pick a visual- warn if more than one was available
//
	x_visinfo = XGetVisualInfo (x_disp, template_mask, &template, &num_visuals);
	if (num_visuals > 1)
	{
		printf ("Found more than one visual id at depth %d:\n", template.depth);
		for (i = 0 ; i < num_visuals ; i++)
			printf ("	-visualid %d\n", (int) (x_visinfo[i].visualid));
	}
	else if (num_visuals == 0)
	{
		if (template_mask == VisualIDMask)
			Sys_Error ("VID: Bad visual id %d\n", template.visualid);
		else
			Sys_Error ("VID: No visuals at depth %d\n", template.depth);
	}
	
	if (verbose)
	{
		printf ("Using visualid %d:\n", (int) (x_visinfo->visualid));
		printf ("	screen %d\n", x_visinfo->screen);
		printf ("	red_mask 0x%x\n", (int) (x_visinfo->red_mask));
		printf ("	green_mask 0x%x\n", (int) (x_visinfo->green_mask));
		printf ("	blue_mask 0x%x\n", (int) (x_visinfo->blue_mask));
		printf ("	colormap_size %d\n", x_visinfo->colormap_size);
		printf ("	bits_per_rgb %d\n", x_visinfo->bits_per_rgb);
	}
	
	x_vis = x_visinfo->visual;
//
// See if we're going to do pixel multiply
//
	if (pixel_multiply.value < 1 || pixel_multiply.value > 4)
		Cvar_SetValue ("pixel_multiply", 2);
	current_pixel_multiply = pixel_multiply.value;
	
	w = 320 * current_pixel_multiply; // minimum width
	h = 200 * current_pixel_multiply; // minimum height
	if (desired_width < w)
		desired_width = w;
	if (desired_height < h)
		desired_height = h;
		
	vid.width = MP (desired_width);
	vid.height = MP (desired_height);
	
	//
	// patch things up so game doesn't fail if window is too small
	//
	
	if (vid.width < 320)
		vid.width = 320;
	if (vid.height < 200)
		vid.height = 200;
		
//
// see if we're going to use threads
//
	if ( ( (sysconf (_SC_NPROCESSORS_ONLN) > 1) || COM_CheckParm ("-mt")) &&
			(COM_CheckParm ("-no_mt") == 0))
	{
		use_mt = 1;
		printf ("VID: Using multiple threads!\n");
	}
	
// setup attributes for main window
	{
		int attribmask = CWEventMask  | CWColormap | CWBorderPixel;
		XSetWindowAttributes attribs;
		Colormap tmpcmap;
		
		tmpcmap = XCreateColormap (x_disp, XRootWindow (x_disp,
								   x_visinfo->screen), x_vis, AllocNone);
								   
		attribs.event_mask = x_std_event_mask;
		attribs.border_pixel = 0;
		attribs.colormap = tmpcmap;
		
// create the main window
		x_win = XCreateWindow (x_disp,
							   XRootWindow (x_disp, x_visinfo->screen),
							   0, 0,	// x, y
							   desired_width, desired_height,
							   0, // borderwidth
							   x_visinfo->depth,
							   InputOutput,
							   x_vis,
							   attribmask,
							   &attribs);
							   
		if (x_visinfo->class != TrueColor)
			XFreeColormap (x_disp, tmpcmap);
			
	}
	
	if (x_visinfo->depth == 8)
	{
	
		// create and upload the palette
		if (x_visinfo->class == PseudoColor)
		{
			x_cmap = XCreateColormap (x_disp, x_win, x_vis, AllocAll);
			VID_SetPalette (palette);
			XSetWindowColormap (x_disp, x_win, x_cmap);
		}
		
	}
	
	VID_SetWindowTitle (x_win, "Quake");
	
// inviso cursor
	XDefineCursor (x_disp, x_win, CreateNullCursor (x_disp, x_win));
	
// create the GC
	{
		XGCValues xgcvalues;
		int valuemask = GCGraphicsExposures;
		xgcvalues.graphics_exposures = False;
		x_gc = XCreateGC (x_disp, x_win, valuemask, &xgcvalues);
	}
	
// map the window
	XMapWindow (x_disp, x_win);
	XSync (x_disp, True) ;       /* wait for map */
//
// wait for first exposure event
//
	{
		XEvent event;
		do
		{
			XNextEvent (x_disp, &event);
			if (event.type == Expose && !event.xexpose.count)
				oktodraw = true;
		}
		while (!oktodraw);
	}
//
// initialize XIL
//

	state = xil_open();
	
	if (state == NULL)
	{
		//
		//  XIL's default error handler will print an error msg on stderr
		//
		Sys_Error ("xil_open failed\n");
	}
	
	X11_active = true;
	
	VID_ResetFramebuffer();
	
	D_InitCaches (surfcache, sizeof (surfcache));
	
	vid_menudrawfn = VID_MenuDraw;
	vid_menukeyfn = VID_MenuKey;
}

VID_ResetFramebuffer()
{
	XilMemoryStorage storage;
	
	if (use_mt)
	{
		VID_ResetFramebuffer_MT();
		return;
	}
	
//printf("VID_ResetFramebuffer: vid.width %d, vid.height %d\n", vid.width, vid.height);

	xil_destroy (display_image);
	
	xil_destroy (quake_image);
	
	display_image = xil_create_from_window (state, x_disp, x_win);
	quake_image = xil_create (state, vid.width, vid.height, 1, XIL_BYTE);
	
	xil_export (quake_image);
	
	if (xil_get_memory_storage (quake_image, &storage) == FALSE)
		Sys_Error ("xil_get_memory_storage");
		
	xil_import (quake_image, TRUE);
	xil_export (quake_image);
	
	if (xil_get_memory_storage (quake_image, &storage) == FALSE)
		Sys_Error ("xil_get_memory_storage");
		
	vid.rowbytes = storage.byte.scanline_stride;
	vid.buffer =   storage.byte.data;
	vid.conbuffer = vid.buffer;
	vid.conrowbytes = vid.rowbytes;
	vid.conwidth = vid.width;
	vid.conheight = vid.height;
	
	vid.maxwarpwidth = WARP_WIDTH;
	vid.maxwarpheight = WARP_HEIGHT;
	vid.recalc_refdef = 1;				// force a surface cache flush
	
	free (d_pzbuffer);
	
	d_pzbuffer = malloc (PM (vid.width) * PM (vid.height) * sizeof (*d_pzbuffer));
	//Hunk_HighAllocName(PM(vid.width)*PM(vid.height)*sizeof(*d_pzbuffer),"zbuff");
}

VID_ResetFramebuffer_MT()
{
	XilMemoryStorage storage;
	XilImage drain_renderpipeline();
	XilImage old_display_image;
	
	void *update_thread();
	
	printf ("VID_ResetFramebuffer: vid.width %d, vid.height %d\n", vid.width, vid.height);
	
	old_display_image = display_image;
	
	display_image = xil_create_from_window (state, x_disp, x_win);
	
	if (quake_image == NULL)
		if (thr_create (NULL, NULL, update_thread, NULL, THR_NEW_LWP, NULL) != 0)
			Sys_Error ("VID: thr_create");
			
	quake_image = drain_renderpipeline (quake_image);
	
	xil_destroy (old_display_image);
	
	free (d_pzbuffer);
	
	d_pzbuffer = malloc (PM (vid.width) * PM (vid.height) * sizeof (*d_pzbuffer));
}

void VID_ShiftPalette (unsigned char *p)
{
	VID_SetPalette (p);
}

void VID_SetPalette (unsigned char *palette)
{

	int i;
	XColor colors[256];
	
	if (x_visinfo->class == PseudoColor && x_visinfo->depth == 8)
	{
		if (palette != current_palette)
			memcpy (current_palette, palette, 768);
		for (i = 0 ; i < 256 ; i++)
		{
			colors[i].pixel = i;
			colors[i].flags = DoRed | DoGreen | DoBlue;
			colors[i].red = vid_gamma[palette[i*3]] * 257;
			colors[i].green = vid_gamma[palette[i*3+1]] * 257;
			colors[i].blue = vid_gamma[palette[i*3+2]] * 257;
		}
		XStoreColors (x_disp, x_cmap, colors, 256);
	}
	
}

// Called at shutdown

void	VID_Shutdown (void)
{
	X11_active = false;
	Con_Printf ("VID_Shutdown\n");
	//XAutoRepeatOn(x_disp);
	xil_destroy (display_image);
	xil_destroy (quake_image);
	display_image = NULL;
	quake_image = NULL;
	XCloseDisplay (x_disp);
}

int XLateKey (XKeyEvent *ev)
{

	int key;
	char buf[64];
	KeySym keysym;
	
	XLookupString (ev, buf, sizeof buf, &keysym, 0);
	
	switch (keysym)
	{
		case XK_Page_Up:
			key = K_PGUP;
			break;
		case XK_Page_Down:
			key = K_PGDN;
			break;
		case XK_Home:
			key = K_HOME;
			break;
		case XK_End:
			key = K_END;
			break;
		case XK_Left:
			key = K_LEFTARROW;
			break;
		case XK_Right:
			key = K_RIGHTARROW;
			break;
		case XK_Down:
			key = K_DOWNARROW;
			break;
		case XK_Up:
			key = K_UPARROW;
			break;
		case XK_Escape:
			key = K_ESCAPE;
			break;
		case XK_Return:
			key = K_ENTER;
			break;
		case XK_Tab:
			key = K_TAB;
			break;
		case XK_Help:
		case XK_F1:
			key = K_F1;
			break;
		case XK_F2:
			key = K_F2;
			break;
		case XK_F3:
			key = K_F3;
			break;
		case XK_F4:
			key = K_F4;
			break;
		case XK_F5:
			key = K_F5;
			break;
		case XK_F6:
			key = K_F6;
			break;
		case XK_F7:
			key = K_F7;
			break;
		case XK_F8:
			key = K_F8;
			break;
		case XK_F9:
			key = K_F9;
			break;
		case XK_F10:
			key = K_F10;
			break;
		case XK_F11:
			key = K_F11;
			break;
		case XK_F12:
			key = K_F12;
			break;
		case XK_BackSpace:
		case XK_Delete:
			key = K_BACKSPACE;
			break;
		case XK_Pause:
			key = K_PAUSE;
			break;
		case XK_Shift_L:
		case XK_Shift_R:
			key = K_SHIFT;
			break;
		case XK_Control_L:
		case XK_Control_R:
			key = K_CTRL;
			break;
		case XK_Alt_L:
		case XK_Meta_L:
		case XK_Alt_R:
		case XK_Meta_R:
			key = K_ALT;
			break;
			// various other keys on the keyboard
		case XK_F27:
			key = K_HOME;
			break;
		case XK_F29:
			key = K_PGUP;
			break;
		case XK_F33:
			key = K_END;
			break;
		case XK_F35:
			key = K_PGDN;
			break;
		case XK_Insert:
		case XK_KP_Insert:
			key = K_INS;
			break;
		case XK_F24:
			key = '-';
			break;
		case XK_KP_Add:
			key = '+';
			break;
		case XK_KP_Subtract:
			key = '-';
			break;
		case XK_F25:
			key = '/';
			break;
		case XK_F26:
			key = '*';
			break;
			
		default:
			key = (unsigned char) * buf;
			break;
	}
	
	return key;
	
}

struct
{
	int key;
	int down;
} keyq[64];

int keyq_head = 0;
int keyq_tail = 0;

int config_notify = 0;
int config_notify_width;
int config_notify_height;

void GetEvent (void)
{
	XEvent x_event;
	int b;
	
	XNextEvent (x_disp, &x_event);
	switch (x_event.type)
	{
		case KeyPress:
			Key_Event (XLateKey (&x_event.xkey), true);
			break;
		case KeyRelease:
			Key_Event (XLateKey (&x_event.xkey), false);
			break;
			
		case MotionNotify:
		
			if (_windowed_mouse.value)
			{
				mouse_x = (float) ( (int) x_event.xmotion.x - (int) (vid.width / 2));
				mouse_y = (float) ( (int) x_event.xmotion.y - (int) (vid.height / 2));
				//printf("m: x=%d,y=%d, mx=%3.2f,my=%3.2f\n",
				//	x_event.xmotion.x, x_event.xmotion.y, mouse_x, mouse_y);
				
				/* move the mouse to the window center again */
				XSelectInput (x_disp, x_win, x_std_event_mask & ~PointerMotionMask);
				XWarpPointer (x_disp, None, x_win, 0, 0, 0, 0,
							  (vid.width / 2), (vid.height / 2));
				XSelectInput (x_disp, x_win, x_std_event_mask);
			}
			else
			{
				mouse_x = (float) (x_event.xmotion.x - p_mouse_x);
				mouse_y = (float) (x_event.xmotion.y - p_mouse_y);
				p_mouse_x = x_event.xmotion.x;
				p_mouse_y = x_event.xmotion.y;
			}
			break;
			
		case ButtonPress:
			b = -1;
			if (x_event.xbutton.button == 1)
				b = 0;
			else if (x_event.xbutton.button == 2)
				b = 2;
			else if (x_event.xbutton.button == 3)
				b = 1;
			if (b >= 0)
				mouse_buttonstate |= 1 << b;
			break;
			
		case ButtonRelease:
			b = -1;
			if (x_event.xbutton.button == 1)
				b = 0;
			else if (x_event.xbutton.button == 2)
				b = 2;
			else if (x_event.xbutton.button == 3)
				b = 1;
			if (b >= 0)
				mouse_buttonstate &= ~ (1 << b);
			break;
			
		case ConfigureNotify:
			//			printf("config notify\n");
			config_notify_width = x_event.xconfigure.width;
			config_notify_height = x_event.xconfigure.height;
			config_notify = 1;
			sb_updates = 0;
			break;
		case Expose:
			sb_updates = 0;
			break;
		case ClientMessage:
			if (x_event.xclient.data.l[0] == aWMDelete) Host_Quit_f();
			break;
#if 0
		case FocusIn:
			printf ("FocusIn...\n");
			x_focus = true;
			break;
		case FocusOut:
			printf ("FocusOut...\n");
			x_focus = false;
			break;
#endif
	}
	
	if (old_windowed_mouse != _windowed_mouse.value)
	{
		old_windowed_mouse = _windowed_mouse.value;
		
		if (!_windowed_mouse.value)
		{
			/* ungrab the pointer */
			XUngrabPointer (x_disp, CurrentTime);
		}
		else
		{
			/* grab the pointer */
			XGrabPointer (x_disp, x_win, True, 0, GrabModeAsync,
						  GrabModeAsync, x_win, None, CurrentTime);
		}
	}
}

// flushes the given rectangles from the view buffer to the screen

void
VID_Update (vrect_t *rects)
{
	void VID_Update_MT (vrect_t *);
	
	
	if (count_frames)
	{
		static int count;
		static long long s;
		long long gethrtime();
		
		if (count == 0)
			s = gethrtime();
			
		if (count++ == 200)
		{
			long long n = gethrtime();
			count = 1;
			printf ("%lf frames/secs\n", 200.0 / ( (double) (n - s) / 1e9));
			s = n;
		}
	}
	
	if (use_mt)
	{
		VID_Update_MT (rects);
		return;
	}
	
	// if the window changes dimension, skip this frame
	
	if (config_notify)
	{
		int w, h;
		XWindowChanges chg;
		unsigned int value_mask;
		
		w = 320 * current_pixel_multiply; // minimum width
		h = 200 * current_pixel_multiply; // minimum height
		
		if (config_notify_width < w || config_notify_height < h)
		{
			// We must resize the window
			memset (&chg, 0, sizeof (chg));
			value_mask = 0;
			if (config_notify_width < w)
			{
				config_notify_width = chg.width = w;
				value_mask |= CWWidth;
			}
			if (config_notify_height < h)
			{
				config_notify_height = chg.height = h;
				value_mask |= CWHeight;
			}
			if (value_mask)
				XConfigureWindow (x_disp, x_win, value_mask, &chg);
		}
		
		config_notify = 0;
		
		vid.width = MP (config_notify_width) & ~3;
		vid.height = MP (config_notify_height);
		
		if (vid.width < 320)
			vid.width = 320;
		if (vid.height < 200)
			vid.height = 200;
			
		VID_ResetFramebuffer();
		
		return;
	}
	// if pixel multiply changed, skip this frame
	if (CheckPixelMultiply())
		return;
		
	while (rects)   // I've never seen more than one rect?
	{
		XilMemoryStorage storage;
		
		xil_import (quake_image, TRUE); // let xil control the image
		
		if (current_pixel_multiply < 2)
			xil_copy (quake_image, display_image);
		else
			xil_scale (quake_image, display_image, "nearest",
					   (float) current_pixel_multiply, (float) current_pixel_multiply);
					   
		xil_export (quake_image); // back to quake
		
		if (xil_get_memory_storage (quake_image, &storage) == FALSE)
			Sys_Error ("xil_get_memory_storage");
			
		vid.buffer =   storage.byte.data;
		vid.conbuffer = vid.buffer;
		
		rects = rects->pnext;
	}
}

void
VID_Update_MT (vrect_t *rects)
{
	XilImage sched_update();
	
	// if the window changes dimension, skip this frame
	
	if (config_notify)
	{
		int w, h;
		XWindowChanges chg;
		unsigned int value_mask;
		
		w = 320 * current_pixel_multiply; // minimum width
		h = 200 * current_pixel_multiply; // minimum height
		
		if (config_notify_width < w || config_notify_height < h)
		{
			// We must resize the window
			memset (&chg, 0, sizeof (chg));
			value_mask = 0;
			if (config_notify_width < w)
			{
				config_notify_width = chg.width = w;
				value_mask |= CWWidth;
			}
			if (config_notify_height < h)
			{
				config_notify_height = chg.height = h;
				value_mask |= CWHeight;
			}
			if (value_mask)
				XConfigureWindow (x_disp, x_win, value_mask, &chg);
		}
		
		config_notify = 0;
		
		vid.width = MP (config_notify_width) & ~3;
		vid.height = MP (config_notify_height);
		
		if (vid.width < 320)
			vid.width = 320;
		if (vid.height < 200)
			vid.height = 200;
			
		VID_ResetFramebuffer_MT();
		
		return;
	}
	// if pixel multiply changed, skip this frame
	if (CheckPixelMultiply())
		return;
		
	quake_image = sched_update (quake_image);
}

XilImage
drain_renderpipeline (XilImage old)
{
	XilImage new;
	
	XilMemoryStorage storage;
	
	if (old)
		if (read (render_pipeline[1], &new, sizeof (new)) != sizeof (new))
		{
			Sys_Error ("drain_renderpipeline: read");
			xil_destroy (new);
		}
		
	xil_destroy (old);
	
	
	new = xil_create (state, vid.width, vid.height, 1, XIL_BYTE);
	
	if (write (render_pipeline[0], &new, sizeof (new)) != sizeof (new))
		Sys_Error ("drain_renderpipeline: write");
		
	new = xil_create (state, vid.width, vid.height, 1, XIL_BYTE);
	
	xil_export (new);
	
	if (xil_get_memory_storage (new, &storage) == FALSE)
		Sys_Error ("xil_get_memory_storage");
		
	vid.rowbytes = storage.byte.scanline_stride;
	vid.buffer =   storage.byte.data;
	vid.conbuffer = vid.buffer;
	vid.conrowbytes = vid.rowbytes;
	vid.conwidth = vid.width;
	vid.conheight = vid.height;
	
	vid.maxwarpwidth = WARP_WIDTH;
	vid.maxwarpheight = WARP_HEIGHT;
	vid.recalc_refdef = 1;				// force a surface cache flush
	
	return (new);
	
}

XilImage
sched_update (XilImage image)
{
	XilImage new;
	XilMemoryStorage storage;
	
	if (write (render_pipeline[1], &image, sizeof (image)) != sizeof (image))
		Sys_Error ("sched_update:write");
		
	if (read (render_pipeline[1], &new, sizeof (new)) != sizeof (new))
		Sys_Error ("sched_update:read");
		
	xil_export (new);
	
	if (xil_get_memory_storage (new, &storage) == FALSE)
		Sys_Error ("xil_get_memory_storage");
		
	vid.buffer =   storage.byte.data;
	vid.conbuffer = vid.buffer;
	
	return (new);
}

void *update_thread()
{
	XilImage image;
	
	if (!X11_active)
		return;
		
	while (read (render_pipeline[0], &image, sizeof (image)) == sizeof (image))
	{
	
		xil_import (image, TRUE); // let xil control the image
		
		if (!display_image)
			return;
			
		if (current_pixel_multiply < 2)
			xil_copy (image, display_image);
		else
			xil_scale (image, display_image, "nearest",
					   (float) current_pixel_multiply, (float) current_pixel_multiply);
					   
		if (write (render_pipeline[0], &image, sizeof (image)) != sizeof (image))
			Sys_Error ("update_thread: write");
	}
}


static int dither;

void VID_DitherOn (void)
{
	if (dither == 0)
	{
		vid.recalc_refdef = 1;
		dither = 1;
	}
}

void VID_DitherOff (void)
{
	if (dither)
	{
		vid.recalc_refdef = 1;
		dither = 0;
	}
}

void VID_SetDefaultMode (void)
{
}

int I_OpenWindow (void)
{
	return 0;
}

void I_EraseWindow (int window)
{

}

void I_DrawCircle (int window, int x, int y, int r)
{
}

void I_DisplayWindow (int window)
{
}

void Sys_SendKeyEvents (void)
{
	// get events from x server
	if (x_disp)
	{
		while (XPending (x_disp)) GetEvent();
		while (keyq_head != keyq_tail)
		{
			Key_Event (keyq[keyq_tail].key, keyq[keyq_tail].down);
			keyq_tail = (keyq_tail + 1) & 63;
		}
	}
}

void IN_Init (void)
{
	Cvar_RegisterVariable (&_windowed_mouse);
	Cvar_RegisterVariable (&m_filter);
	if (COM_CheckParm ("-nomouse"))
		return;
	mouse_x = mouse_y = 0.0;
	mouse_avail = 1;
}

void IN_Shutdown (void)
{
	mouse_avail = 0;
}

void IN_Commands (void)
{
	int i;
	
	if (!mouse_avail) return;
	
	for (i = 0 ; i < mouse_buttons ; i++)
	{
		if ( (mouse_buttonstate & (1 << i)) && ! (mouse_oldbuttonstate & (1 << i)))
			Key_Event (K_MOUSE1 + i, true);
			
		if (! (mouse_buttonstate & (1 << i)) && (mouse_oldbuttonstate & (1 << i)))
			Key_Event (K_MOUSE1 + i, false);
	}
	mouse_oldbuttonstate = mouse_buttonstate;
}

void IN_Move (usercmd_t *cmd)
{
	if (!mouse_avail)
		return;
		
	if (m_filter.value)
	{
		mouse_x = (mouse_x + old_mouse_x) * 0.5;
		mouse_y = (mouse_y + old_mouse_y) * 0.5;
	}
	
	old_mouse_x = mouse_x;
	old_mouse_y = mouse_y;
	
	mouse_x *= sensitivity.value;
	mouse_y *= sensitivity.value;
	
	if ( (in_strafe.state & 1) || (lookstrafe.value && (in_mlook.state & 1)))
		cmd->sidemove += m_side.value * mouse_x;
	else
		cl.viewangles[YAW] -= m_yaw.value * mouse_x;
	if (in_mlook.state & 1)
		V_StopPitchDrift ();
		
	if ( (in_mlook.state & 1) && ! (in_strafe.state & 1))
	{
		cl.viewangles[PITCH] += m_pitch.value * mouse_y;
		if (cl.viewangles[PITCH] > 80)
			cl.viewangles[PITCH] = 80;
		if (cl.viewangles[PITCH] < -70)
			cl.viewangles[PITCH] = -70;
	}
	else
	{
		if ( (in_strafe.state & 1) && noclip_anglehack)
			cmd->upmove -= m_forward.value * mouse_y;
		else
			cmd->forwardmove -= m_forward.value * mouse_y;
	}
	mouse_x = mouse_y = 0.0;
}

//void VID_UnlockBuffer(void) { }
//void VID_LockBuffer(void) { }

