/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others

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.

*/
// gl_vidnt.c -- NT GL vid component

#include "quakedef.h"
#include "winquake.h"
#include "resource.h"
#include <commctrl.h>

#define MAX_MODE_LIST	600 //johnfitz -- was 30
#define VID_ROW_SIZE	3
#define WARP_WIDTH		320
#define WARP_HEIGHT		200
#define MAXWIDTH		10000
#define MAXHEIGHT		10000
#define BASEWIDTH		320
#define BASEHEIGHT		200

#define MODE_WINDOWED			0
#define NO_MODE					(MODE_WINDOWED - 1)
#define MODE_FULLSCREEN_DEFAULT	(MODE_WINDOWED + 1)

typedef struct {
	modestate_t	type;
	int			width;
	int			height;
	int			modenum;
	int			dib;
	int			fullscreen;
	int			bpp;
	int			refreshrate; //johnfitz
	int			halfscreen;
	char		modedesc[17];
} vmode_t;

typedef struct {
	int			width;
	int			height;
} lmode_t;

lmode_t	lowresmodes[] = {
	{320, 200},
	{320, 240},
	{400, 300},
	{512, 384},
};

const char *gl_vendor;
const char *gl_renderer;
const char *gl_version;
const char *gl_extensions;
const char *wgl_extensions; //johnfitz

qboolean		DDActive;
qboolean		scr_skipupdate;

static vmode_t	modelist[MAX_MODE_LIST];
static int		nummodes;
static vmode_t	*pcurrentmode;
static vmode_t	badmode;

static DEVMODE	gdevmode;
static qboolean	vid_initialized = false;
static qboolean	windowed, leavecurrentmode;
static qboolean vid_canalttab = false;
static qboolean vid_wassuspended = false;
static int		windowed_mouse;
extern qboolean	mouseactive;  // from in_win.c
static HICON	hIcon;

int			DIBWidth, DIBHeight;
RECT		WindowRect;
DWORD		WindowStyle, ExWindowStyle;

HWND	mainwindow, dibwindow;

int			vid_modenum = NO_MODE;
int			vid_realmode;
int			vid_default = MODE_WINDOWED;
static int	windowed_default;
unsigned char	vid_curpal[256*3];
static qboolean fullsbardraw = false;

HDC		maindc;

glvert_t glv;

HWND WINAPI InitializeWindow (HINSTANCE hInstance, int nCmdShow);

viddef_t	vid;				// global video state

//unsigned short	d_8to16table[256]; //johnfitz -- never used
//unsigned char		d_15to8table[65536]; //johnfitz -- never used

modestate_t	modestate = MS_UNINIT;

void VID_Menu_Init (void); //johnfitz
void VID_Menu_f (void); //johnfitz
void VID_MenuDraw (void);
void VID_MenuKey (int key);

LONG WINAPI MainWndProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
void AppActivate(BOOL fActive, BOOL minimize);
char *VID_GetModeDescription (int mode);
void ClearAllStates (void);
void VID_UpdateWindowStatus (void);
void GL_Init (void);

PROC glArrayElementEXT;
PROC glColorPointerEXT;
PROC glTexCoordPointerEXT;
PROC glVertexPointerEXT;

typedef void (APIENTRY *lp3DFXFUNC) (int, int, int, int, int, const void*);

PFNGLMULTITEXCOORD2FARBPROC GL_MTexCoord2fFunc = NULL; //johnfitz
PFNGLACTIVETEXTUREARBPROC GL_SelectTextureFunc = NULL; //johnfitz

typedef BOOL (APIENTRY * SETSWAPFUNC) (int); //johnfitz
typedef int (APIENTRY * GETSWAPFUNC) (void); //johnfitz
SETSWAPFUNC wglSwapIntervalEXT = NULL; //johnfitz
GETSWAPFUNC wglGetSwapIntervalEXT = NULL; //johnfitz

qboolean isPermedia = false;
qboolean isIntelVideo = false; //johnfitz -- intel video workarounds from Baker
qboolean gl_mtexable = false;
qboolean gl_texture_env_combine = false; //johnfitz
qboolean gl_texture_env_add = false; //johnfitz
qboolean gl_swap_control = false; //johnfitz
qboolean gl_anisotropy_able = false; //johnfitz
float gl_max_anisotropy; //johnfitz

int			gl_stencilbits; //johnfitz

qboolean vid_locked = false; //johnfitz

void GL_SetupState (void); //johnfitz

//====================================

//johnfitz -- new cvars
cvar_t		vid_fullscreen = {"vid_fullscreen", "1", true};
cvar_t		vid_width = {"vid_width", "640", true};
cvar_t		vid_height = {"vid_height", "480", true};
cvar_t		vid_bpp = {"vid_bpp", "16", true};
cvar_t		vid_refreshrate = {"vid_refreshrate", "60", true};
cvar_t		vid_vsync = {"vid_vsync", "0", true};
//johnfitz

cvar_t		_windowed_mouse = {"_windowed_mouse","1", true};
cvar_t		vid_gamma = {"gamma", "1", true}; //johnfitz -- moved here from view.c

int			window_center_x, window_center_y, window_x, window_y, window_width, window_height;
RECT		window_rect;



//==========================================================================
//
//  HARDWARE GAMMA -- johnfitz
//
//==========================================================================

typedef int (WINAPI * RAMPFUNC)();
RAMPFUNC wglGetDeviceGammaRamp3DFX;
RAMPFUNC wglSetDeviceGammaRamp3DFX;

unsigned short vid_gammaramp[768];
unsigned short vid_systemgammaramp[768]; //to restore gamma on exit
unsigned short vid_3dfxgammaramp[768]; //to restore gamma on exit
int vid_gammaworks, vid_3dfxgamma;

/*
================
VID_Gamma_SetGamma -- apply gamma correction
================
*/
void VID_Gamma_SetGamma (void)
{
	if (maindc)
	{
		if (vid_gammaworks)
			if (SetDeviceGammaRamp(maindc, vid_gammaramp) == false)
				Con_Printf ("VID_Gamma_SetGamma: failed on SetDeviceGammaRamp\n");

		if (vid_3dfxgamma)
			if (wglSetDeviceGammaRamp3DFX(maindc, vid_gammaramp) == false)
				Con_Printf ("VID_Gamma_SetGamma: failed on wglSetDeviceGammaRamp3DFX\n");
	}
}

/*
================
VID_Gamma_Restore -- restore system gamma
================
*/
void VID_Gamma_Restore (void)
{
	if (maindc)
	{
		if (vid_gammaworks)
			if (SetDeviceGammaRamp(maindc, vid_systemgammaramp) == false)
				Con_Printf ("VID_Gamma_Restore: failed on SetDeviceGammaRamp\n");

		if (vid_3dfxgamma)
			if (wglSetDeviceGammaRamp3DFX(maindc, vid_3dfxgammaramp) == false)
				Con_Printf ("VID_Gamma_Restore: failed on wglSetDeviceGammaRamp3DFX\n");
	}
}

/*
================
VID_Gamma_Shutdown -- called on exit
================
*/
void VID_Gamma_Shutdown (void)
{
	VID_Gamma_Restore ();
}

/*
================
VID_Gamma_f -- callback when the cvar changes
================
*/
void VID_Gamma_f (void)
{
	static float oldgamma;
	int i;

	if (vid_gamma.value == oldgamma)
		return;

	oldgamma = vid_gamma.value;

	for (i=0; i<256; i++)
		vid_gammaramp[i] = vid_gammaramp[i+256] = vid_gammaramp[i+512] =
			CLAMP(0, (int) (255 * pow ((i+0.5)/255.5, vid_gamma.value) + 0.5), 255) << 8;

	VID_Gamma_SetGamma ();
}

/*
================
VID_Gamma_Init -- call on init
================
*/
void VID_Gamma_Init (void)
{
	vid_gammaworks = vid_3dfxgamma = false;

	if (strstr(gl_extensions, "WGL_3DFX_gamma_control"))
	{
		wglSetDeviceGammaRamp3DFX = (RAMPFUNC) wglGetProcAddress("wglSetDeviceGammaRamp3DFX");
		wglGetDeviceGammaRamp3DFX = (RAMPFUNC) wglGetProcAddress("wglGetDeviceGammaRamp3DFX");

		if (wglGetDeviceGammaRamp3DFX (maindc, vid_3dfxgammaramp))
			vid_3dfxgamma = true;

		Con_Printf ("WGL_3DFX_gamma_control found\n");
	}

	if (GetDeviceGammaRamp (maindc, vid_systemgammaramp))
		vid_gammaworks = true;

	Cvar_RegisterVariable (&vid_gamma, VID_Gamma_f);
}

//==========================================================================

// direct draw software compatability stuff

void VID_HandlePause (qboolean pause)
{
}

void VID_ForceLockState (int lk)
{
}

void VID_LockBuffer (void)
{
}

void VID_UnlockBuffer (void)
{
}

int VID_ForceUnlockedAndReturnState (void)
{
	return 0;
}

void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
{
}

void D_EndDirectRect (int x, int y, int width, int height)
{
}

/*
================
CenterWindow
================
*/
void CenterWindow(HWND hWndCenter, int width, int height, BOOL lefttopjustify)
{
    RECT    rect;
    int     CenterX, CenterY;

	CenterX = (GetSystemMetrics(SM_CXSCREEN) - width) / 2;
	CenterY = (GetSystemMetrics(SM_CYSCREEN) - height) / 2;
	if (CenterX > CenterY*2)
		CenterX >>= 1;	// dual screens
	CenterX = (CenterX < 0) ? 0: CenterX;
	CenterY = (CenterY < 0) ? 0: CenterY;
	SetWindowPos (hWndCenter, NULL, CenterX, CenterY, 0, 0,
			SWP_NOSIZE | SWP_NOZORDER | SWP_SHOWWINDOW | SWP_DRAWFRAME);
}

/*
================
VID_SetWindowedMode
================
*/
qboolean VID_SetWindowedMode (int modenum)
{
	HDC		hdc;
	int		lastmodestate, width, height;
	RECT		rect;

	lastmodestate = modestate;

	WindowRect.top = WindowRect.left = 0;

	WindowRect.right = modelist[modenum].width;
	WindowRect.bottom = modelist[modenum].height;

	DIBWidth = modelist[modenum].width;
	DIBHeight = modelist[modenum].height;

	//johnfitz -- if width and height match desktop size, do aguirRe's trick of making the window have no titlebar/borders
	if (DIBWidth == GetSystemMetrics(SM_CXSCREEN) && DIBHeight == GetSystemMetrics(SM_CYSCREEN))
		WindowStyle = WS_POPUP; // Window covers entire screen; no caption, borders etc
	else
		WindowStyle = WS_OVERLAPPED | WS_BORDER | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX;
	//johnfitz
	ExWindowStyle = 0;

	rect = WindowRect;
	AdjustWindowRectEx(&rect, WindowStyle, FALSE, 0);

	width = rect.right - rect.left;
	height = rect.bottom - rect.top;

	// Create the DIB window
	dibwindow = CreateWindowEx (
		 ExWindowStyle,
		 "FitzQuake", //johnfitz -- was "WinQuake"
		 "FitzQuake", //johnfitz -- was "GLQuake"
		 WindowStyle,
		 rect.left, rect.top,
		 width,
		 height,
		 NULL,
		 NULL,
		 global_hInstance,
		 NULL);

	if (!dibwindow)
		Sys_Error ("Couldn't create DIB window");

	// Center and show the DIB window
	CenterWindow(dibwindow, WindowRect.right - WindowRect.left,
				 WindowRect.bottom - WindowRect.top, false);

	ShowWindow (dibwindow, SW_SHOWDEFAULT);
	UpdateWindow (dibwindow);

	modestate = MS_WINDOWED;

// because we have set the background brush for the window to NULL
// (to avoid flickering when re-sizing the window on the desktop),
// we clear the window to black when created, otherwise it will be
// empty while Quake starts up.
	hdc = GetDC(dibwindow);
	PatBlt(hdc,0,0,WindowRect.right,WindowRect.bottom,BLACKNESS);
	ReleaseDC(dibwindow, hdc);

	//johnfitz -- stuff
	vid.width = modelist[modenum].width;
	vid.height = modelist[modenum].height;
	vid.conwidth = vid.width & 0xFFFFFFF8;
	vid.conheight = vid.conwidth * vid.height / vid.width;
	//johnfitz

	vid.numpages = 2;

	mainwindow = dibwindow;

	SendMessage (mainwindow, WM_SETICON, (WPARAM)TRUE, (LPARAM)hIcon);
	SendMessage (mainwindow, WM_SETICON, (WPARAM)FALSE, (LPARAM)hIcon);

	return true;
}

/*
================
VID_SetFullDIBMode
================
*/
qboolean VID_SetFullDIBMode (int modenum)
{
	HDC		hdc;
	int		lastmodestate, width, height;
	RECT		rect;

	if (!leavecurrentmode)
	{
		gdevmode.dmFields = DM_BITSPERPEL |
							DM_PELSWIDTH |
							DM_PELSHEIGHT |
							DM_DISPLAYFREQUENCY; //johnfitz -- refreshrate
		gdevmode.dmBitsPerPel = modelist[modenum].bpp;
		gdevmode.dmPelsWidth = modelist[modenum].width << modelist[modenum].halfscreen;
		gdevmode.dmPelsHeight = modelist[modenum].height;
		gdevmode.dmDisplayFrequency = modelist[modenum].refreshrate; //johnfitz -- refreshrate
		gdevmode.dmSize = sizeof (gdevmode);

		if (ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
			Sys_Error ("Couldn't set fullscreen DIB mode");
	}

	lastmodestate = modestate;
	modestate = MS_FULLDIB;

	WindowRect.top = WindowRect.left = 0;

	WindowRect.right = modelist[modenum].width;
	WindowRect.bottom = modelist[modenum].height;

	DIBWidth = modelist[modenum].width;
	DIBHeight = modelist[modenum].height;

	WindowStyle = WS_POPUP;
	ExWindowStyle = 0;

	rect = WindowRect;
	AdjustWindowRectEx(&rect, WindowStyle, FALSE, 0);

	width = rect.right - rect.left;
	height = rect.bottom - rect.top;

	// Create the DIB window
	dibwindow = CreateWindowEx (
		 ExWindowStyle,
		 "FitzQuake", //johnfitz -- was "WinQuake"
		 "FitzQuake", //johnfitz -- was "GLQuake"
		 WindowStyle,
		 rect.left, rect.top,
		 width,
		 height,
		 NULL,
		 NULL,
		 global_hInstance,
		 NULL);

	if (!dibwindow)
		Sys_Error ("Couldn't create DIB window");

	ShowWindow (dibwindow, SW_SHOWDEFAULT);
	UpdateWindow (dibwindow);

// Because we have set the background brush for the window to NULL
// (to avoid flickering when re-sizing the window on the desktop), we
// clear the window to black when created, otherwise it will be
// empty while Quake starts up.
	hdc = GetDC(dibwindow);
	PatBlt(hdc,0,0,WindowRect.right,WindowRect.bottom,BLACKNESS);
	ReleaseDC(dibwindow, hdc);

	//johnfitz -- stuff
	vid.width = modelist[modenum].width;
	vid.height = modelist[modenum].height;
	vid.conwidth = vid.width & 0xFFFFFFF8;
	vid.conheight = vid.conwidth * vid.height / vid.width;
	//johnfitz

	vid.numpages = 2;

// needed because we're not getting WM_MOVE messages fullscreen on NT
	window_x = 0;
	window_y = 0;

	mainwindow = dibwindow;

	SendMessage (mainwindow, WM_SETICON, (WPARAM)TRUE, (LPARAM)hIcon);
	SendMessage (mainwindow, WM_SETICON, (WPARAM)FALSE, (LPARAM)hIcon);

	return true;
}

/*
================
VID_SetMode
================
*/
int VID_SetMode (int modenum)
{
	int		original_mode, temp;
	qboolean	stat = false;
	MSG		msg;
	HDC		hdc;

	if ((windowed && (modenum != 0)) ||
		(!windowed && (modenum < 1)) ||
		(!windowed && (modenum >= nummodes)))
	{
		Sys_Error ("Bad video mode\n");
	}

// so Con_Printfs don't mess us up by forcing vid and snd updates
	temp = scr_disabled_for_loading;
	scr_disabled_for_loading = true;

	CDAudio_Pause ();

	if (vid_modenum == NO_MODE)
		original_mode = windowed_default;
	else
		original_mode = vid_modenum;

	// Set either the fullscreen or windowed mode
	if (modelist[modenum].type == MS_WINDOWED)
	{
		if (_windowed_mouse.value && key_dest == key_game)
		{
			stat = VID_SetWindowedMode(modenum);
			IN_ActivateMouse ();
			IN_HideMouse ();
		}
		else
		{
			IN_DeactivateMouse ();
			IN_ShowMouse ();
			stat = VID_SetWindowedMode(modenum);
		}
	}
	else if (modelist[modenum].type == MS_FULLDIB)
	{
		stat = VID_SetFullDIBMode(modenum);
		IN_ActivateMouse ();
		IN_HideMouse ();
	}
	else
	{
		Sys_Error ("VID_SetMode: Bad mode type in modelist");
	}

	if (!stat)
	{
		Sys_Error ("Couldn't set video mode");
	}

	//johnfitz -- re-initialize dinput becuase it's tied to the "mainwindow" object
	if (COM_CheckParm ("-dinput"))
		IN_InitDInput ();
	//johnfitz

	window_width = DIBWidth;
	window_height = DIBHeight;
	VID_UpdateWindowStatus ();

	CDAudio_Resume ();
	scr_disabled_for_loading = temp;

// now we try to make sure we get the focus on the mode switch, because
// sometimes in some systems we don't.  We grab the foreground, then
// finish setting up, pump all our messages, and sleep for a little while
// to let messages finish bouncing around the system, then we put
// ourselves at the top of the z order, then grab the foreground again,
// Who knows if it helps, but it probably doesn't hurt
	SetForegroundWindow (mainwindow);
	vid_modenum = modenum;

	while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
	{
		TranslateMessage (&msg);
		DispatchMessage (&msg);
	}

	Sleep (100);

	SetWindowPos (mainwindow, HWND_TOP, 0, 0, 0, 0,
				  SWP_DRAWFRAME | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW |
				  SWP_NOCOPYBITS);

	SetForegroundWindow (mainwindow);

// fix the leftover Alt from any Alt-Tab or the like that switched us away
	ClearAllStates ();

	if (!msg_suppress_1)
		Con_SafePrintf ("Video mode %s initialized\n", VID_GetModeDescription (vid_modenum));

	vid.recalc_refdef = 1;

	return true;
}

/*
===============
VID_Vsync_f -- johnfitz
===============
*/
void VID_Vsync_f (void)
{
	if (gl_swap_control)
	{
		if (vid_vsync.value)
		{
			if (!wglSwapIntervalEXT(1))
				Con_Printf ("VID_Vsync_f: failed on wglSwapIntervalEXT\n");
		}
		else
		{
			if (!wglSwapIntervalEXT(0))
				Con_Printf ("VID_Vsync_f: failed on wglSwapIntervalEXT\n");
		}
	}
}

/*
===================
VID_Restart -- johnfitz -- change video modes on the fly
===================
*/
void VID_Restart (void)
{
	HDC		hdc;
	HGLRC		hrc;
	int		i;
	qboolean	mode_changed = false;
	vmode_t		oldmode;

	if (vid_locked)
		return;

//
// check cvars against current mode
//
	if (vid_fullscreen.value)
	{
		if (modelist[vid_default].type == MS_WINDOWED)
			mode_changed = true;
		else if (modelist[vid_default].bpp != (int)vid_bpp.value)
			mode_changed = true;
		else if (modelist[vid_default].refreshrate != (int)vid_refreshrate.value)
			mode_changed = true;
	}
	else
		if (modelist[vid_default].type != MS_WINDOWED)
			mode_changed = true;

	if (modelist[vid_default].width != (int)vid_width.value ||
		modelist[vid_default].height != (int)vid_height.value)
		mode_changed = true;

	if (mode_changed)
	{
//
// decide which mode to set
//
		oldmode = modelist[vid_default];

		if (vid_fullscreen.value)
		{
			for (i=1; i<nummodes; i++)
			{
				if (modelist[i].width == (int)vid_width.value &&
					modelist[i].height == (int)vid_height.value &&
					modelist[i].bpp == (int)vid_bpp.value &&
					modelist[i].refreshrate == (int)vid_refreshrate.value)
				{
					break;
				}
			}

			if (i == nummodes)
			{
				Con_Printf ("%dx%dx%d %dHz is not a valid fullscreen mode\n",
							(int)vid_width.value,
							(int)vid_height.value,
							(int)vid_bpp.value,
							(int)vid_refreshrate.value);
				return;
			}

			windowed = false;
			vid_default = i;
		}
		else //not fullscreen
		{
			hdc = GetDC (NULL);
			if (GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE)
			{
				Con_Printf ("Can't run windowed on non-RGB desktop\n");
				ReleaseDC (NULL, hdc);
				return;
			}
			ReleaseDC (NULL, hdc);

			if (vid_width.value < 320)
			{
				Con_Printf ("Window width can't be less than 320\n");
				return;
			}

			if (vid_height.value < 200)
			{
				Con_Printf ("Window height can't be less than 200\n");
				return;
			}

			modelist[0].width = (int)vid_width.value;
			modelist[0].height = (int)vid_height.value;
			sprintf (modelist[0].modedesc, "%dx%dx%d %dHz",
					 modelist[0].width,
					 modelist[0].height,
					 modelist[0].bpp,
					 modelist[0].refreshrate);

			windowed = true;
			vid_default = 0;
		}
//
// destroy current window
//
		hrc = wglGetCurrentContext();
		hdc = wglGetCurrentDC();
		wglMakeCurrent(NULL, NULL);

		vid_canalttab = false;

		if (hdc && dibwindow)
			ReleaseDC (dibwindow, hdc);
		if (modestate == MS_FULLDIB)
			ChangeDisplaySettings (NULL, 0);
		if (maindc && dibwindow)
			ReleaseDC (dibwindow, maindc);
		maindc = NULL;
		if (dibwindow)
			DestroyWindow (dibwindow);
//
// set new mode
//
		VID_SetMode (vid_default);
		maindc = GetDC(mainwindow);
		bSetupPixelFormat(maindc);

		// try to reuse existing render context, and if that fails create a new one
		if (!wglMakeCurrent (maindc, hrc))
		{
			wglDeleteContext (hrc);
			hrc = wglCreateContext (maindc);
			if (!wglMakeCurrent (maindc, hrc))
			{
				char szBuf[80];
				LPVOID lpMsgBuf;
				DWORD dw = GetLastError();
				FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf, 0, NULL );
				sprintf(szBuf, "VID_Restart: wglMakeCurrent failed with error %d: %s", dw, lpMsgBuf);
 				Sys_Error (szBuf);
			}
			TexMgr_ReloadImages ();
			GL_SetupState ();
		}

		vid_canalttab = true;

		//swapcontrol settings were lost when previous window was destroyed
		VID_Vsync_f ();

		//warpimages needs to be recalculated
		TexMgr_RecalcWarpImageSize ();

		//conwidth and conheight need to be recalculated
		vid.conwidth = (scr_conwidth.value > 0) ? (int)scr_conwidth.value : (scr_conscale.value > 0) ? (int)(vid.width/scr_conscale.value) : vid.width;
		vid.conwidth = CLAMP (320, vid.conwidth, vid.width);
		vid.conwidth &= 0xFFFFFFF8;
		vid.conheight = vid.conwidth * vid.height / vid.width;
	}
//
// keep cvars in line with actual mode
//
	Cvar_Set ("vid_width", va("%i", modelist[vid_default].width));
	Cvar_Set ("vid_height", va("%i", modelist[vid_default].height));
	Cvar_Set ("vid_bpp", va("%i", modelist[vid_default].bpp));
	Cvar_Set ("vid_refreshrate", va("%i", modelist[vid_default].refreshrate));
	Cvar_Set ("vid_fullscreen", (windowed) ? "0" : "1");
}

/*
================
VID_Test -- johnfitz -- like vid_restart, but asks for confirmation after switching modes
================
*/
void VID_Test (void)
{
	vmode_t oldmode;
	qboolean	mode_changed = false;

	if (vid_locked)
		return;
//
// check cvars against current mode
//
	if (vid_fullscreen.value)
	{
		if (modelist[vid_default].type == MS_WINDOWED)
			mode_changed = true;
		else if (modelist[vid_default].bpp != (int)vid_bpp.value)
			mode_changed = true;
		else if (modelist[vid_default].refreshrate != (int)vid_refreshrate.value)
			mode_changed = true;
	}
	else
		if (modelist[vid_default].type != MS_WINDOWED)
			mode_changed = true;

	if (modelist[vid_default].width != (int)vid_width.value ||
		modelist[vid_default].height != (int)vid_height.value)
		mode_changed = true;

	if (!mode_changed)
		return;
//
// now try the switch
//
	oldmode = modelist[vid_default];

	VID_Restart ();

	//pop up confirmation dialoge
	if (!SCR_ModalMessage("Would you like to keep this\nvideo mode? (y/n)\n", 5.0f))
	{
		//revert cvars and mode
		Cvar_Set ("vid_width", va("%i", oldmode.width));
		Cvar_Set ("vid_height", va("%i", oldmode.height));
		Cvar_Set ("vid_bpp", va("%i", oldmode.bpp));
		Cvar_Set ("vid_refreshrate", va("%i", oldmode.refreshrate));
		Cvar_Set ("vid_fullscreen", (oldmode.type == MS_WINDOWED) ? "0" : "1");
		VID_Restart ();
	}
}

/*
================
VID_Unlock -- johnfitz
================
*/
void VID_Unlock (void)
{
	vid_locked = false;

	//sync up cvars in case they were changed during the lock
	Cvar_Set ("vid_width", va("%i", modelist[vid_default].width));
	Cvar_Set ("vid_height", va("%i", modelist[vid_default].height));
	Cvar_Set ("vid_bpp", va("%i", modelist[vid_default].bpp));
	Cvar_Set ("vid_refreshrate", va("%i", modelist[vid_default].refreshrate));
	Cvar_Set ("vid_fullscreen", (windowed) ? "0" : "1");
}

/*
================
VID_UpdateWindowStatus
================
*/
void VID_UpdateWindowStatus (void)
{
	window_rect.left = window_x;
	window_rect.top = window_y;
	window_rect.right = window_x + window_width;
	window_rect.bottom = window_y + window_height;
	window_center_x = (window_rect.left + window_rect.right) / 2;
	window_center_y = (window_rect.top + window_rect.bottom) / 2;

	IN_UpdateClipCursor ();
}

//==============================================================================
//
//	OPENGL STUFF
//
//==============================================================================

/*
===============
GL_MakeNiceExtensionsList -- johnfitz
===============
*/
char *GL_MakeNiceExtensionsList (const char *in)
{
	char *copy, *token, *out;
	int i, count;

	//each space will be replaced by 4 chars, so count the spaces before we malloc
	for (i = 0, count = 1; i < strlen(in); i++)
		if (in[i] == ' ')
			count++;
	out = Z_Malloc (strlen(in) + count*3 + 1); //usually about 1-2k
	out[0] = 0;

	copy = Z_Malloc(strlen(in) + 1);
	strcpy(copy, in);

	for (token = strtok(copy, " "); token; token = strtok(NULL, " "))
	{
		strcat(out, "\n   ");
		strcat(out, token);
	}

	Z_Free (copy);
	return out;
}

/*
===============
GL_Info_f -- johnfitz
===============
*/
void GL_Info_f (void)
{
	static char *gl_extensions_nice = NULL;
	static char *wgl_extensions_nice = NULL;

	if (!gl_extensions_nice)
		gl_extensions_nice = GL_MakeNiceExtensionsList (gl_extensions);

	if (!wgl_extensions_nice)
		wgl_extensions_nice = GL_MakeNiceExtensionsList (wgl_extensions);

	Con_SafePrintf ("GL_VENDOR: %s\n", gl_vendor);
	Con_SafePrintf ("GL_RENDERER: %s\n", gl_renderer);
	Con_SafePrintf ("GL_VERSION: %s\n", gl_version);
	Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions_nice);
	Con_Printf ("WGL_EXTENSIONS: %s\n", wgl_extensions_nice);
}

/*
===============
CheckArrayExtensions
===============
*/
void CheckArrayExtensions (void)
{
	const char	*tmp;

	tmp = (const char *)glGetString(GL_EXTENSIONS);
	while (*tmp)
	{
		if (strncmp(tmp, "GL_EXT_vertex_array", sizeof("GL_EXT_vertex_array") -1) == 0)
		{
			if (((glArrayElementEXT = wglGetProcAddress("glArrayElementEXT")) == NULL) ||
			    ((glColorPointerEXT = wglGetProcAddress("glColorPointerEXT")) == NULL) ||
			    ((glTexCoordPointerEXT = wglGetProcAddress("glTexCoordPointerEXT")) == NULL) ||
			    ((glVertexPointerEXT = wglGetProcAddress("glVertexPointerEXT")) == NULL) )
			{
				Sys_Error ("GetProcAddress for vertex extension failed");
			}
			return;
		}
		tmp++;
	}

	Sys_Error ("Vertex array extension not present");
}

/*
===============
GL_CheckExtensions -- johnfitz
===============
*/
void GL_CheckExtensions (void)
{
	//
	// multitexture
	//
	if (COM_CheckParm("-nomtex"))
		Con_Warning ("Mutitexture disabled at command line\n");
	else
		if (strstr(gl_extensions, "GL_ARB_multitexture"))
		{
			GL_MTexCoord2fFunc = (void *) wglGetProcAddress("glMultiTexCoord2fARB");
			GL_SelectTextureFunc = (void *) wglGetProcAddress("glActiveTextureARB");
			if (GL_MTexCoord2fFunc && GL_SelectTextureFunc)
			{
				Con_Printf("FOUND: ARB_multitexture\n");
				TEXTURE0 = GL_TEXTURE0_ARB;
				TEXTURE1 = GL_TEXTURE1_ARB;
				gl_mtexable = true;
			}
			else
				Con_Warning ("multitexture not supported (wglGetProcAddress failed)\n");
		}
		else
			if (strstr(gl_extensions, "GL_SGIS_multitexture"))
			{
				GL_MTexCoord2fFunc = (void *) wglGetProcAddress("glMTexCoord2fSGIS");
				GL_SelectTextureFunc = (void *) wglGetProcAddress("glSelectTextureSGIS");
				if (GL_MTexCoord2fFunc && GL_SelectTextureFunc)
				{
					Con_Printf("FOUND: SGIS_multitexture\n");
					TEXTURE0 = TEXTURE0_SGIS;
					TEXTURE1 = TEXTURE1_SGIS;
					gl_mtexable = true;
				}
				else
					Con_Warning ("multitexture not supported (wglGetProcAddress failed)\n");

			}
			else
				Con_Warning ("multitexture not supported (extension not found)\n");
	//
	// texture_env_combine
	//
	if (COM_CheckParm("-nocombine"))
		Con_Warning ("texture_env_combine disabled at command line\n");
	else
		if (strstr(gl_extensions, "GL_ARB_texture_env_combine"))
		{
			Con_Printf("FOUND: ARB_texture_env_combine\n");
			gl_texture_env_combine = true;
		}
		else
			if (strstr(gl_extensions, "GL_EXT_texture_env_combine"))
			{
				Con_Printf("FOUND: EXT_texture_env_combine\n");
				gl_texture_env_combine = true;
			}
			else
				Con_Warning ("texture_env_combine not supported\n");
	//
	// texture_env_add
	//
	if (COM_CheckParm("-noadd"))
		Con_Warning ("texture_env_add disabled at command line\n");
	else
		if (strstr(gl_extensions, "GL_ARB_texture_env_add"))
		{
			Con_Printf("FOUND: ARB_texture_env_add\n");
			gl_texture_env_add = true;
		}
		else
			if (strstr(gl_extensions, "GL_EXT_texture_env_add"))
			{
				Con_Printf("FOUND: EXT_texture_env_add\n");
				gl_texture_env_add = true;
			}
			else
				Con_Warning ("texture_env_add not supported\n");

	//
	// swap control
	//
	if (strstr(gl_extensions, "GL_EXT_swap_control") || strstr(wgl_extensions, "WGL_EXT_swap_control"))
	{
		wglSwapIntervalEXT = (SETSWAPFUNC) wglGetProcAddress("wglSwapIntervalEXT");
		wglGetSwapIntervalEXT = (GETSWAPFUNC) wglGetProcAddress("wglGetSwapIntervalEXT");

		if (wglSwapIntervalEXT && wglGetSwapIntervalEXT)
		{
			if (!wglSwapIntervalEXT(0))
				Con_Warning ("vertical sync not supported (wglSwapIntervalEXT failed)\n");
			else if (wglGetSwapIntervalEXT() == -1)
				Con_Warning ("vertical sync not supported (swap interval is -1.) Make sure you don't have vertical sync disabled in your driver settings.\n");
			else
			{
				Con_Printf("FOUND: WGL_EXT_swap_control\n");
				gl_swap_control = true;
			}
		}
		else
			Con_Warning ("vertical sync not supported (wglGetProcAddress failed)\n");
	}
	else
		Con_Warning ("vertical sync not supported (extension not found)\n");

	//
	// anisotropic filtering
	//
	if (strstr(gl_extensions, "GL_EXT_texture_filter_anisotropic"))
	{
		float test1,test2;
		GLuint tex;

		// test to make sure we really have control over it
		// 1.0 and 2.0 should always be legal values
		glGenTextures(1, &tex);
		glBindTexture (GL_TEXTURE_2D, tex);
		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.0f);
		glGetTexParameterfv (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, &test1);
		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, 2.0f);
		glGetTexParameterfv (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, &test2);
		glDeleteTextures(1, &tex);

		if (test1 == 1 && test2 == 2)
		{
			Con_Printf("FOUND: EXT_texture_filter_anisotropic\n");
			gl_anisotropy_able = true;
		}
		else
			Con_Warning ("anisotropic filtering locked by driver. Current driver setting is %f\n", test1);

		//get max value either way, so the menu and stuff know it
		glGetFloatv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gl_max_anisotropy);
	}
	else
		Con_Warning ("texture_filter_anisotropic not supported\n");
}

/*
===============
GetWGLExtensions -- johnfitz
===============
*/
void GetWGLExtensions (void)
{
	const char *(*wglGetExtensionsStringARB) (HDC hdc);
	const char *(*wglGetExtensionsStringEXT) ();

	if (wglGetExtensionsStringARB = (void *) wglGetProcAddress ("wglGetExtensionsStringARB"))
		wgl_extensions = wglGetExtensionsStringARB (maindc);
	else if (wglGetExtensionsStringEXT = (void *) wglGetProcAddress ("wglGetExtensionsStringEXT"))
		wgl_extensions = wglGetExtensionsStringEXT ();
	else
		wgl_extensions = "";
}

/*
===============
GL_SetupState -- johnfitz

does all the stuff from GL_Init that needs to be done every time a new GL render context is created
GL_Init will still do the stuff that only needs to be done once
===============
*/
void GL_SetupState (void)
{
	glClearColor (0.15,0.15,0.15,0); //johnfitz -- originally 1,0,0,0
	glCullFace(GL_BACK); //johnfitz -- glquake used CCW with backwards culling -- let's do it right
	glFrontFace(GL_CW); //johnfitz -- glquake used CCW with backwards culling -- let's do it right
	glEnable(GL_TEXTURE_2D);
	glEnable(GL_ALPHA_TEST);
	glAlphaFunc(GL_GREATER, 0.666);
	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
	glShadeModel (GL_FLAT);
	glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); //johnfitz
	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
	glDepthRange (0, 1); //johnfitz -- moved here becuase gl_ztrick is gone.
	glDepthFunc (GL_LEQUAL); //johnfitz -- moved here becuase gl_ztrick is gone.
}

/*
===============
GL_Init
===============
*/
void GL_Init (void)
{
	gl_vendor = (const char *) glGetString (GL_VENDOR);
	gl_renderer = (const char *) glGetString (GL_RENDERER);
	gl_version = (const char *) glGetString (GL_VERSION);
	gl_extensions = (const char *) glGetString (GL_EXTENSIONS);

	GetWGLExtensions (); //johnfitz
	GL_CheckExtensions (); //johnfitz

	Cmd_AddCommand ("gl_info", GL_Info_f); //johnfitz

	Cvar_RegisterVariable (&vid_vsync, VID_Vsync_f); //johnfitz

	if (strnicmp(gl_renderer,"PowerVR",7)==0)
		fullsbardraw = true;

	if (strnicmp(gl_renderer,"Permedia",8)==0)
		isPermedia = true;

	//johnfitz -- intel video workarounds from Baker
	if (!strcmp(gl_vendor, "Intel"))
	{
		Con_Printf ("Intel Display Adapter detected\n");
		isIntelVideo = true;
	}
	//johnfitz

#if 0
	//johnfitz -- confirm presence of stencil buffer
	glGetIntegerv(GL_STENCIL_BITS, &gl_stencilbits);
	if(!gl_stencilbits)
		Con_Warning ("Could not create stencil buffer\n");
	else
		Con_Printf ("%i bit stencil buffer\n", gl_stencilbits);
#endif

	GL_SetupState (); //johnfitz
}

/*
=================
GL_BeginRendering -- sets values of glx, gly, glwidth, glheight
=================
*/
void GL_BeginRendering (int *x, int *y, int *width, int *height)
{
	*x = *y = 0;
	*width = WindowRect.right - WindowRect.left;
	*height = WindowRect.bottom - WindowRect.top;
}

/*
=================
GL_EndRendering
=================
*/
void GL_EndRendering (void)
{
	if (!scr_skipupdate || block_drawing)
		SwapBuffers(maindc);

// handle the mouse state when windowed if that's changed
	if (modestate == MS_WINDOWED)
	{
		if (!_windowed_mouse.value) {
			if (windowed_mouse)	{
				IN_DeactivateMouse ();
				IN_ShowMouse ();
				windowed_mouse = false;
			}
		} else {
			windowed_mouse = true;
			if (key_dest == key_game && !mouseactive && ActiveApp) {
				IN_ActivateMouse ();
				IN_HideMouse ();
			} else if (mouseactive && key_dest != key_game) {
				IN_DeactivateMouse ();
				IN_ShowMouse ();
			}
		}
	}
	if (fullsbardraw)
		Sbar_Changed();
}

void VID_SetDefaultMode (void)
{
	IN_DeactivateMouse ();
}


void	VID_Shutdown (void)
{
	HGLRC	hRC;
	HDC	hDC;

	if (vid_initialized)
	{
		vid_canalttab = false;
		hRC = wglGetCurrentContext();
		hDC = wglGetCurrentDC();

		wglMakeCurrent(NULL, NULL);

		if (hRC)
			wglDeleteContext(hRC);

		VID_Gamma_Shutdown (); //johnfitz

		if (hDC && dibwindow)
			ReleaseDC(dibwindow, hDC);

		if (modestate == MS_FULLDIB)
			ChangeDisplaySettings (NULL, 0);

		if (maindc && dibwindow)
			ReleaseDC (dibwindow, maindc);

		AppActivate(false, false);
	}
}

//==========================================================================


BOOL bSetupPixelFormat(HDC hDC)
{
    static PIXELFORMATDESCRIPTOR pfd = {
	sizeof(PIXELFORMATDESCRIPTOR),	// size of this pfd
	1,						// version number
	PFD_DRAW_TO_WINDOW |	// support window
	PFD_SUPPORT_OPENGL |	// support OpenGL
	PFD_DOUBLEBUFFER,		// double buffered
	PFD_TYPE_RGBA,			// RGBA type
	24,						// 24-bit color depth
	0, 0, 0, 0, 0, 0,		// color bits ignored
	0,						// no alpha buffer
	0,						// shift bit ignored
	0,						// no accumulation buffer
	0, 0, 0, 0, 			// accum bits ignored
	32,						// 32-bit z-buffer
	0,						// no stencil buffer
	0,						// no auxiliary buffer
	PFD_MAIN_PLANE,			// main layer
	0,						// reserved
	0, 0, 0					// layer masks ignored
    };
    int pixelformat;
	PIXELFORMATDESCRIPTOR  test; //johnfitz

    if ( (pixelformat = ChoosePixelFormat(hDC, &pfd)) == 0 )
    {
        MessageBox(NULL, "ChoosePixelFormat failed", "Error", MB_OK);
        return FALSE;
    }

	DescribePixelFormat(hDC, pixelformat, sizeof(PIXELFORMATDESCRIPTOR), &test); //johnfitz

    if (SetPixelFormat(hDC, pixelformat, &pfd) == FALSE)
    {
        MessageBox(NULL, "SetPixelFormat failed", "Error", MB_OK);
        return FALSE;
    }

    return TRUE;
}



byte        scantokey[128] =
					{
//  0           1       2       3       4       5       6       7
//  8           9       A       B       C       D       E       F
	0  ,    27,     '1',    '2',    '3',    '4',    '5',    '6',
	'7',    '8',    '9',    '0',    '-',    '=',    K_BACKSPACE, 9, // 0
	'q',    'w',    'e',    'r',    't',    'y',    'u',    'i',
	'o',    'p',    '[',    ']',    13 ,    K_CTRL,'a',  's',      // 1
	'd',    'f',    'g',    'h',    'j',    'k',    'l',    ';',
	'\'' ,    '`',    K_SHIFT,'\\',  'z',    'x',    'c',    'v',      // 2
	'b',    'n',    'm',    ',',    '.',    '/',    K_SHIFT,'*',
	K_ALT,' ',   0  ,    K_F1, K_F2, K_F3, K_F4, K_F5,   // 3
	K_F6, K_F7, K_F8, K_F9, K_F10, K_PAUSE  ,    0  , K_HOME,
	K_UPARROW,K_PGUP,'-',K_LEFTARROW,'5',K_RIGHTARROW,'+',K_END, //4
	K_DOWNARROW,K_PGDN,K_INS,K_DEL,0,0,             0,              K_F11,
	K_F12,0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 5
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 6
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0         // 7
					};

byte        shiftscantokey[128] =
					{
//  0           1       2       3       4       5       6       7
//  8           9       A       B       C       D       E       F
	0  ,    27,     '!',    '@',    '#',    '$',    '%',    '^',
	'&',    '*',    '(',    ')',    '_',    '+',    K_BACKSPACE, 9, // 0
	'Q',    'W',    'E',    'R',    'T',    'Y',    'U',    'I',
	'O',    'P',    '{',    '}',    13 ,    K_CTRL,'A',  'S',      // 1
	'D',    'F',    'G',    'H',    'J',    'K',    'L',    ':',
	'"' ,    '~',    K_SHIFT,'|',  'Z',    'X',    'C',    'V',      // 2
	'B',    'N',    'M',    '<',    '>',    '?',    K_SHIFT,'*',
	K_ALT,' ',   0  ,    K_F1, K_F2, K_F3, K_F4, K_F5,   // 3
	K_F6, K_F7, K_F8, K_F9, K_F10, K_PAUSE  ,    0  , K_HOME,
	K_UPARROW,K_PGUP,'_',K_LEFTARROW,'%',K_RIGHTARROW,'+',K_END, //4
	K_DOWNARROW,K_PGDN,K_INS,K_DEL,0,0,             0,              K_F11,
	K_F12,0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 5
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 6
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0         // 7
					};


/*
=======
MapKey

Map from windows to quake keynums
=======
*/
int MapKey (int key)
{
	/*
	key = (key>>16)&255;
	if (key > 127)
		return 0;
	if (scantokey[key] == 0)
		Con_DPrintf("key 0x%02x has no translation\n", key);
	return scantokey[key];
	*/

	int		extended;
	extern cvar_t	cl_keypad;

	extended = (key >> 24) & 1;

	key = (key>>16)&255;
	if (key > 127)
		return 0;

	key = scantokey[key];

	if (cl_keypad.value) {
		if (extended) {
			switch (key) {
				case K_ENTER:		return KP_ENTER;
				case '/':			return KP_SLASH;
				case K_PAUSE:		return KP_NUMLOCK;
			};
		} else {
			switch (key) {
				case K_HOME:		return KP_HOME;
				case K_UPARROW:		return KP_UPARROW;
				case K_PGUP:		return KP_PGUP;
				case K_LEFTARROW:	return KP_LEFTARROW;
				case K_RIGHTARROW:	return KP_RIGHTARROW;
				case K_END:			return KP_END;
				case K_DOWNARROW:	return KP_DOWNARROW;
				case K_PGDN:		return KP_PGDN;
				case K_INS:			return KP_INS;
				case K_DEL:			return KP_DEL;
			}
		}
	} else {
		// cl_keypad 0, compatibility mode
		switch (key) {
			case KP_STAR:	return '*';
			case KP_MINUS:	return '-';
			case KP_5:		return '5';
			case KP_PLUS:	return '+';
		}
	}

	return key;
}

/*
===================================================================

MAIN WINDOW

===================================================================
*/

/*
================
ClearAllStates
================
*/
void ClearAllStates (void)
{
	//johnfitz -- moved some code into Key_ClearStates
	Key_ClearStates ();
	IN_ClearStates ();
}

void AppActivate(BOOL fActive, BOOL minimize)
/****************************************************************************
*
* Function:     AppActivate
* Parameters:   fActive - True if app is activating
*
* Description:  If the application is activating, then swap the system
*               into SYSPAL_NOSTATIC mode so that our palettes will display
*               correctly.
*
****************************************************************************/
{
	MSG msg;
    HDC			hdc;
    int			i, t;
	static BOOL	sound_active;

	ActiveApp = fActive;
	Minimized = minimize;

// enable/disable sound on focus gain/loss
	if (!ActiveApp && sound_active)
	{
		S_BlockSound ();
		sound_active = false;
	}
	else if (ActiveApp && !sound_active)
	{
		S_UnblockSound ();
		sound_active = true;
	}

	if (fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			IN_ActivateMouse ();
			IN_HideMouse ();
			if (vid_canalttab && vid_wassuspended) {
				vid_wassuspended = false;
				ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN);
				ShowWindow(mainwindow, SW_SHOWNORMAL);
				MoveWindow(mainwindow, 0, 0, gdevmode.dmPelsWidth, gdevmode.dmPelsHeight, false); //johnfitz -- alt-tab fix via Baker
			}
		}
		else if ((modestate == MS_WINDOWED) && _windowed_mouse.value && key_dest == key_game)
		{
			IN_ActivateMouse ();
			IN_HideMouse ();
		}
		VID_Gamma_SetGamma (); //johnfitz
	}

	if (!fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			IN_DeactivateMouse ();
			IN_ShowMouse ();
			if (vid_canalttab) {
				ChangeDisplaySettings (NULL, 0);
				vid_wassuspended = true;
			}
		}
		else if ((modestate == MS_WINDOWED) && _windowed_mouse.value)
		{
			IN_DeactivateMouse ();
			IN_ShowMouse ();
		}
		VID_Gamma_Restore (); //johnfitz
	}
}


/* main window procedure */
LONG WINAPI MainWndProc (
    HWND    hWnd,
    UINT    uMsg,
    WPARAM  wParam,
    LPARAM  lParam)
{
	LONG    lRet = 1;
	int		fwKeys, xPos, yPos, fActive, fMinimized, temp;
	extern unsigned int uiWheelMessage;

	if ( uMsg == uiWheelMessage )
		uMsg = WM_MOUSEWHEEL;

	switch (uMsg)
	{
		case WM_KILLFOCUS:
			if (modestate == MS_FULLDIB)
				ShowWindow(mainwindow, SW_SHOWMINNOACTIVE);
			break;

		case WM_CREATE:
			break;

		case WM_MOVE:
			window_x = (int) LOWORD(lParam);
			window_y = (int) HIWORD(lParam);
			VID_UpdateWindowStatus ();
			break;

		case WM_KEYDOWN:
		case WM_SYSKEYDOWN:
			Key_Event (MapKey(lParam), true);
			break;

		case WM_KEYUP:
		case WM_SYSKEYUP:
			Key_Event (MapKey(lParam), false);
			break;

		case WM_SYSCHAR:
		// keep Alt-Space from happening
			break;

	// this is complicated because Win32 seems to pack multiple mouse events into
	// one update sometimes, so we always check all states and look for events
		case WM_LBUTTONDOWN:
		case WM_LBUTTONUP:
		case WM_RBUTTONDOWN:
		case WM_RBUTTONUP:
		case WM_MBUTTONDOWN:
		case WM_MBUTTONUP:
		case WM_MOUSEMOVE:
			temp = 0;

			if (wParam & MK_LBUTTON)
				temp |= 1;

			if (wParam & MK_RBUTTON)
				temp |= 2;

			if (wParam & MK_MBUTTON)
				temp |= 4;

			IN_MouseEvent (temp);

			break;

		// JACK: This is the mouse wheel with the Intellimouse
		// Its delta is either positive or neg, and we generate the proper
		// Event.
		case WM_MOUSEWHEEL:
			if ((short) HIWORD(wParam) > 0) {
				Key_Event(K_MWHEELUP, true);
				Key_Event(K_MWHEELUP, false);
			} else {
				Key_Event(K_MWHEELDOWN, true);
				Key_Event(K_MWHEELDOWN, false);
			}
			break;

		case WM_SIZE:
			break;

		case WM_CLOSE:
			if (MessageBox (mainwindow, "Are you sure you want to quit?", "Confirm Exit",
						MB_YESNO | MB_SETFOREGROUND | MB_ICONQUESTION) == IDYES)
			{
				Sys_Quit ();
			}

			break;

		case WM_ACTIVATE:
			fActive = LOWORD(wParam);
			fMinimized = (BOOL) HIWORD(wParam);
			AppActivate(!(fActive == WA_INACTIVE), fMinimized);

		// fix the leftover Alt from any Alt-Tab or the like that switched us away
			ClearAllStates ();

			break;

		case WM_DESTROY:
			{
			if (dibwindow)
				DestroyWindow (dibwindow);

			PostQuitMessage (0);
			}
			break;

		case MM_MCINOTIFY:
			lRet = CDAudio_MessageHandler (hWnd, uMsg, wParam, lParam);
			break;

		default:
			/* pass all unhandled messages to DefWindowProc */
			lRet = DefWindowProc (hWnd, uMsg, wParam, lParam);
			break;
	}

	/* return 1 if handled message, 0 if not */
	return lRet;
}

//==========================================================================
//
//  COMMANDS
//
//==========================================================================

/*
=================
VID_NumModes
=================
*/
int VID_NumModes (void)
{
	return nummodes;
}


/*
=================
VID_GetModePtr
=================
*/
vmode_t *VID_GetModePtr (int modenum)
{

	if ((modenum >= 0) && (modenum < nummodes))
		return &modelist[modenum];
	else
		return &badmode;
}


/*
=================
VID_GetModeDescription
=================
*/
char *VID_GetModeDescription (int mode)
{
	char		*pinfo;
	vmode_t		*pv;
	static char	temp[100];

	if ((mode < 0) || (mode >= nummodes))
		return NULL;

	if (!leavecurrentmode)
	{
		pv = VID_GetModePtr (mode);
		pinfo = pv->modedesc;
	}
	else
	{
		sprintf (temp, "Desktop resolution (%ix%ix%i)", //johnfitz -- added bpp
				 modelist[MODE_FULLSCREEN_DEFAULT].width,
				 modelist[MODE_FULLSCREEN_DEFAULT].height,
				 modelist[MODE_FULLSCREEN_DEFAULT].bpp); //johnfitz -- added bpp
		pinfo = temp;
	}

	return pinfo;
}

// KJB: Added this to return the mode driver name in description for console
/*
=================
VID_GetExtModeDescription
=================
*/
char *VID_GetExtModeDescription (int mode)
{
	static char	pinfo[40];
	vmode_t		*pv;

	if ((mode < 0) || (mode >= nummodes))
		return NULL;

	pv = VID_GetModePtr (mode);
	if (modelist[mode].type == MS_FULLDIB)
	{
		if (!leavecurrentmode)
		{
			sprintf(pinfo,"%s fullscreen", pv->modedesc);
		}
		else
		{
			sprintf (pinfo, "Desktop resolution (%ix%ix%i)", //johnfitz -- added bpp
					 modelist[MODE_FULLSCREEN_DEFAULT].width,
					 modelist[MODE_FULLSCREEN_DEFAULT].height,
					 modelist[MODE_FULLSCREEN_DEFAULT].bpp); //johnfitz -- added bpp
		}
	}
	else
	{
		if (modestate == MS_WINDOWED)
			sprintf(pinfo, "%s windowed", pv->modedesc);
		else
			sprintf(pinfo, "windowed");
	}

	return pinfo;
}

/*
=================
VID_DescribeCurrentMode_f
=================
*/
void VID_DescribeCurrentMode_f (void)
{
	Con_Printf ("%s\n", VID_GetExtModeDescription (vid_modenum));
}

/*
=================
VID_DescribeModes_f -- johnfitz -- changed formatting, and added refresh rates after each mode.
=================
*/
void VID_DescribeModes_f (void)
{
	int		i, lnummodes, t;
	char		*pinfo;
	vmode_t		*pv;
	int		lastwidth=0, lastheight=0, lastbpp=0, count=0;

	lnummodes = VID_NumModes ();

	t = leavecurrentmode;
	leavecurrentmode = 0;

	for (i=1 ; i<lnummodes ; i++)
	{
		pv = VID_GetModePtr (i);
		if (lastwidth == pv->width && lastheight == pv->height && lastbpp == pv->bpp)
		{
			Con_SafePrintf (",%i", pv->refreshrate);
		}
		else
		{
			if (count>0)
				Con_SafePrintf ("\n");
			Con_SafePrintf ("   %4i x %4i x %i : %i", pv->width, pv->height, pv->bpp, pv->refreshrate);
			lastwidth = pv->width;
			lastheight = pv->height;
			lastbpp = pv->bpp;
			count++;
		}
	}
	Con_Printf ("\n%i modes\n", count);

	leavecurrentmode = t;
}

//==========================================================================
//
//  INIT
//
//==========================================================================

/*
=================
VID_InitDIB
=================
*/
void VID_InitDIB (HINSTANCE hInstance)
{
	DEVMODE			devmode; //johnfitz
	WNDCLASS		wc;
	HDC				hdc;
	int				i;

	/* Register the frame class */
	wc.style         = 0;
	wc.lpfnWndProc   = (WNDPROC)MainWndProc;
	wc.cbClsExtra    = 0;
	wc.cbWndExtra    = 0;
	wc.hInstance     = hInstance;
	wc.hIcon         = 0;
	wc.hCursor       = LoadCursor (NULL,IDC_ARROW);
	wc.hbrBackground = NULL;
	wc.lpszMenuName  = 0;
	wc.lpszClassName = "FitzQuake"; //johnfitz -- was WinQuake

	if (!RegisterClass (&wc) )
		Sys_Error ("Couldn't register window class");

	modelist[0].type = MS_WINDOWED;

	if (COM_CheckParm("-width"))
		modelist[0].width = Q_atoi(com_argv[COM_CheckParm("-width")+1]);
	else
		modelist[0].width = 640;

	if (modelist[0].width < 320)
		modelist[0].width = 320;

	if (COM_CheckParm("-height"))
		modelist[0].height= Q_atoi(com_argv[COM_CheckParm("-height")+1]);
	else
		modelist[0].height = modelist[0].width * 240/320;

	if (modelist[0].height < 200) //johnfitz -- was 240
		modelist[0].height = 200; //johnfitz -- was 240

	//johnfitz -- get desktop bit depth
	hdc = GetDC(NULL);
	modelist[0].bpp = GetDeviceCaps(hdc, BITSPIXEL);
	ReleaseDC(NULL, hdc);
	//johnfitz

	//johnfitz -- get refreshrate
	if (EnumDisplaySettings (NULL, ENUM_CURRENT_SETTINGS, &devmode))
		modelist[0].refreshrate = devmode.dmDisplayFrequency;
	//johnfitz

	sprintf (modelist[0].modedesc, "%dx%dx%d %dHz", //johnfitz -- added bpp, refreshrate
			 modelist[0].width,
			 modelist[0].height,
			 modelist[0].bpp, //johnfitz -- added bpp
			 modelist[0].refreshrate); //johnfitz -- added refreshrate

	modelist[0].modenum = MODE_WINDOWED;
	modelist[0].dib = 1;
	modelist[0].fullscreen = 0;
	modelist[0].halfscreen = 0;

	nummodes = 1;
}

/*
=================
VID_InitFullDIB
=================
*/
void VID_InitFullDIB (HINSTANCE hInstance)
{
	DEVMODE	devmode;
	int		i, modenum, cmodes, originalnummodes, existingmode, numlowresmodes;
	int		j, bpp, done;
	BOOL	stat;

// enumerate >8 bpp modes
	originalnummodes = nummodes;
	modenum = 0;

	do
	{
		stat = EnumDisplaySettings (NULL, modenum, &devmode);

		if ((devmode.dmBitsPerPel >= 15) &&
			(devmode.dmPelsWidth <= MAXWIDTH) &&
			(devmode.dmPelsHeight <= MAXHEIGHT) &&
			(nummodes < MAX_MODE_LIST))
		{
			devmode.dmFields = DM_BITSPERPEL |
							   DM_PELSWIDTH |
							   DM_PELSHEIGHT |
							   DM_DISPLAYFREQUENCY; //johnfitz -- refreshrate

			if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
					DISP_CHANGE_SUCCESSFUL)
			{
				modelist[nummodes].type = MS_FULLDIB;
				modelist[nummodes].width = devmode.dmPelsWidth;
				modelist[nummodes].height = devmode.dmPelsHeight;
				modelist[nummodes].modenum = 0;
				modelist[nummodes].halfscreen = 0;
				modelist[nummodes].dib = 1;
				modelist[nummodes].fullscreen = 1;
				modelist[nummodes].bpp = devmode.dmBitsPerPel;
				modelist[nummodes].refreshrate = devmode.dmDisplayFrequency; //johnfitz -- refreshrate
				sprintf (modelist[nummodes].modedesc, "%dx%dx%d %dHz", //johnfitz -- refreshrate
						 devmode.dmPelsWidth,
						 devmode.dmPelsHeight,
						 devmode.dmBitsPerPel,
						 devmode.dmDisplayFrequency); //johnfitz -- refreshrate

			// if the width is more than twice the height, reduce it by half because this
			// is probably a dual-screen monitor
				if (!COM_CheckParm("-noadjustaspect"))
				{
					if (modelist[nummodes].width > (modelist[nummodes].height << 1))
					{
						modelist[nummodes].width >>= 1;
						modelist[nummodes].halfscreen = 1;
						sprintf (modelist[nummodes].modedesc, "%dx%dx%d %dHz", //johnfitz -- refreshrate
								 modelist[nummodes].width,
								 modelist[nummodes].height,
								 modelist[nummodes].bpp,
								 modelist[nummodes].refreshrate); //johnfitz -- refreshrate
					}
				}

				for (i=originalnummodes, existingmode = 0 ; i<nummodes ; i++)
				{
					if ((modelist[nummodes].width == modelist[i].width)   &&
						(modelist[nummodes].height == modelist[i].height) &&
						(modelist[nummodes].bpp == modelist[i].bpp) &&
						(modelist[nummodes].refreshrate == modelist[i].refreshrate)) //johnfitz -- refreshrate
					{
						existingmode = 1;
						break;
					}
				}

				if (!existingmode)
				{
					nummodes++;
				}
			}
		}

		modenum++;
	} while (stat);

// see if there are any low-res modes that aren't being reported
	numlowresmodes = sizeof(lowresmodes) / sizeof(lowresmodes[0]);
	bpp = 16;
	done = 0;

	do
	{
		for (j=0 ; (j<numlowresmodes) && (nummodes < MAX_MODE_LIST) ; j++)
		{
			devmode.dmBitsPerPel = bpp;
			devmode.dmPelsWidth = lowresmodes[j].width;
			devmode.dmPelsHeight = lowresmodes[j].height;
			devmode.dmFields = DM_BITSPERPEL |
							   DM_PELSWIDTH |
							   DM_PELSHEIGHT |
							   DM_DISPLAYFREQUENCY; //johnfitz -- refreshrate;

			if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
					DISP_CHANGE_SUCCESSFUL)
			{
				modelist[nummodes].type = MS_FULLDIB;
				modelist[nummodes].width = devmode.dmPelsWidth;
				modelist[nummodes].height = devmode.dmPelsHeight;
				modelist[nummodes].modenum = 0;
				modelist[nummodes].halfscreen = 0;
				modelist[nummodes].dib = 1;
				modelist[nummodes].fullscreen = 1;
				modelist[nummodes].bpp = devmode.dmBitsPerPel;
				modelist[nummodes].refreshrate = devmode.dmDisplayFrequency; //johnfitz -- refreshrate
				sprintf (modelist[nummodes].modedesc, "%dx%dx%d %dHz", //johnfitz -- refreshrate
						 devmode.dmPelsWidth,
						 devmode.dmPelsHeight,
						 devmode.dmBitsPerPel,
						 devmode.dmDisplayFrequency); //johnfitz -- refreshrate

				for (i=originalnummodes, existingmode = 0 ; i<nummodes ; i++)
				{
					if ((modelist[nummodes].width == modelist[i].width)   &&
						(modelist[nummodes].height == modelist[i].height) &&
						(modelist[nummodes].bpp == modelist[i].bpp) &&
						(modelist[nummodes].refreshrate == modelist[i].refreshrate)) //johnfitz -- refreshrate
					{
						existingmode = 1;
						break;
					}
				}

				if (!existingmode)
				{
					nummodes++;
				}
			}
		}
		switch (bpp)
		{
			case 16:
				bpp = 32;
				break;

			case 32:
				bpp = 24;
				break;

			case 24:
				done = 1;
				break;
		}
	} while (!done);

	if (nummodes == originalnummodes)
		Con_SafePrintf ("No fullscreen DIB modes found\n");
}

/*
===================
VID_Init
===================
*/
void	VID_Init (void)
{
	int		i, existingmode;
	int		basenummodes, width, height, bpp, findbpp, done;
	byte	*ptmp;
	char	gldir[MAX_OSPATH];
	HGLRC	baseRC; //johnfitz -- moved here from global scope, since it was only used in this
	HDC		hdc;
	DEVMODE	devmode;

	//johnfitz -- clean up init readouts
	//Con_Printf("------------- Init Video -------------\n");
	//Con_Printf("%cVideo Init\n", 2);
	//johnfitz

	memset(&devmode, 0, sizeof(devmode));

	Cvar_RegisterVariable (&vid_fullscreen, NULL); //johnfitz
	Cvar_RegisterVariable (&vid_width, NULL); //johnfitz
	Cvar_RegisterVariable (&vid_height, NULL); //johnfitz
	Cvar_RegisterVariable (&vid_bpp, NULL); //johnfitz
	Cvar_RegisterVariable (&vid_refreshrate, NULL); //johnfitz
	Cvar_RegisterVariable (&_windowed_mouse, NULL);

	Cmd_AddCommand ("vid_unlock", VID_Unlock); //johnfitz
	Cmd_AddCommand ("vid_restart", VID_Restart); //johnfitz
	Cmd_AddCommand ("vid_test", VID_Test); //johnfitz
	Cmd_AddCommand ("vid_describecurrentmode", VID_DescribeCurrentMode_f);
	Cmd_AddCommand ("vid_describemodes", VID_DescribeModes_f);

	hIcon = LoadIcon (global_hInstance, MAKEINTRESOURCE (IDI_ICON2));

	InitCommonControls();

	VID_InitDIB (global_hInstance);
	basenummodes = nummodes = 1;

	VID_InitFullDIB (global_hInstance);

	if (COM_CheckParm("-window"))
	{
		hdc = GetDC (NULL);

		if (GetDeviceCaps(hdc, RASTERCAPS) & RC_PALETTE)
		{
			Sys_Error ("Can't run in non-RGB mode");
		}

		ReleaseDC (NULL, hdc);

		windowed = true;

		vid_default = MODE_WINDOWED;
	}
	else
	{
		if (nummodes == 1)
			Sys_Error ("No RGB fullscreen modes available");

		windowed = false;

		if (COM_CheckParm("-mode"))
		{
			vid_default = Q_atoi(com_argv[COM_CheckParm("-mode")+1]);
		}
		else
		{
			if (COM_CheckParm("-current"))
			{
				modelist[MODE_FULLSCREEN_DEFAULT].width = GetSystemMetrics (SM_CXSCREEN);
				modelist[MODE_FULLSCREEN_DEFAULT].height = GetSystemMetrics (SM_CYSCREEN);
				vid_default = MODE_FULLSCREEN_DEFAULT;
				leavecurrentmode = 1;
			}
			else
			{
				if (COM_CheckParm("-width"))
				{
					width = Q_atoi(com_argv[COM_CheckParm("-width")+1]);
				}
				else
				{
					width = 640;
				}

				if (COM_CheckParm("-bpp"))
				{
					bpp = Q_atoi(com_argv[COM_CheckParm("-bpp")+1]);
					findbpp = 0;
				}
				else
				{
					bpp = 15;
					findbpp = 1;
				}

				if (COM_CheckParm("-height"))
					height = Q_atoi(com_argv[COM_CheckParm("-height")+1]);
				else
					height = width * 3 / 4; // assume 4:3 aspect ratio

			// if they want to force it, add the specified mode to the list
				if (COM_CheckParm("-force") && (nummodes < MAX_MODE_LIST))
				{
					modelist[nummodes].type = MS_FULLDIB;
					modelist[nummodes].width = width;
					modelist[nummodes].height = height;
					modelist[nummodes].modenum = 0;
					modelist[nummodes].halfscreen = 0;
					modelist[nummodes].dib = 1;
					modelist[nummodes].fullscreen = 1;
					modelist[nummodes].bpp = bpp;
					sprintf (modelist[nummodes].modedesc, "%dx%dx%d %dHz", //johnfitz -- refreshrate
							 devmode.dmPelsWidth,
							 devmode.dmPelsHeight,
							 devmode.dmBitsPerPel,
							 devmode.dmDisplayFrequency); //johnfitz -- refreshrate

					for (i=nummodes, existingmode = 0 ; i<nummodes ; i++)
					{
						if ((modelist[nummodes].width == modelist[i].width)   &&
							(modelist[nummodes].height == modelist[i].height) &&
							(modelist[nummodes].bpp == modelist[i].bpp) &&
							(modelist[nummodes].refreshrate == modelist[i].refreshrate)) //johnfitz -- refreshrate
						{
							existingmode = 1;
							break;
						}
					}

					if (!existingmode)
					{
						nummodes++;
					}
				}

				done = 0;

				do
				{
					if (COM_CheckParm("-height"))
					{
						height = Q_atoi(com_argv[COM_CheckParm("-height")+1]);

						for (i=1, vid_default=0 ; i<nummodes ; i++)
						{
							if ((modelist[i].width == width) &&
								(modelist[i].height == height) &&
								(modelist[i].bpp == bpp))
							{
								vid_default = i;
								done = 1;
								break;
							}
						}
					}
					else
					{
						for (i=1, vid_default=0 ; i<nummodes ; i++)
						{
							if ((modelist[i].width == width) && (modelist[i].bpp == bpp))
							{
								vid_default = i;
								done = 1;
								break;
							}
						}
					}

					if (!done)
					{
						if (findbpp)
						{
							switch (bpp)
							{
							case 15:
								bpp = 16;
								break;
							case 16:
								bpp = 32;
								break;
							case 32:
								bpp = 24;
								break;
							case 24:
								done = 1;
								break;
							}
						}
						else
						{
							done = 1;
						}
					}
				} while (!done);

				if (!vid_default)
				{
					Sys_Error ("Specified video mode not available");
				}
			}
		}
	}

	vid_initialized = true;

	vid.maxwarpwidth = WARP_WIDTH;
	vid.maxwarpheight = WARP_HEIGHT;
	vid.colormap = host_colormap;
	vid.fullbright = 256 - LittleLong (*((int *)vid.colormap + 2048));

	DestroyWindow (hwnd_dialog);

	VID_SetMode (vid_default);

	maindc = GetDC(mainwindow);
	bSetupPixelFormat(maindc);

	baseRC = wglCreateContext( maindc );
	if (!baseRC)
		Sys_Error ("Could not initialize GL (wglCreateContext failed).\n\nMake sure you in are 65535 color mode, and try running -window.");
	if (!wglMakeCurrent( maindc, baseRC ))
		Sys_Error ("VID_Init: wglMakeCurrent failed");

	GL_Init ();

	//johnfitz -- removed code creating "glquake" subdirectory

	vid_realmode = vid_modenum;

	vid_menucmdfn = VID_Menu_f; //johnfitz
	vid_menudrawfn = VID_MenuDraw;
	vid_menukeyfn = VID_MenuKey;

	strcpy (badmode.modedesc, "Bad mode");
	vid_canalttab = true;

	if (COM_CheckParm("-fullsbar"))
		fullsbardraw = true;

	VID_Gamma_Init(); //johnfitz
	VID_Menu_Init(); //johnfitz

	//johnfitz -- command line vid settings should override config file settings.
	//so we have to lock the vid mode from now until after all config files are read.
	if (COM_CheckParm("-width") || COM_CheckParm("-height") ||
		COM_CheckParm("-bpp") || COM_CheckParm("-window"))
	{
		vid_locked = true;
	}
	//johnfitz
}

/*
================
VID_SyncCvars -- johnfitz -- set vid cvars to match current video mode
================
*/
void VID_SyncCvars (void)
{
	Cvar_Set ("vid_width", va("%i", modelist[vid_default].width));
	Cvar_Set ("vid_height", va("%i", modelist[vid_default].height));
	Cvar_Set ("vid_bpp", va("%i", modelist[vid_default].bpp));
	Cvar_Set ("vid_refreshrate", va("%i", modelist[vid_default].refreshrate));
	Cvar_Set ("vid_fullscreen", (windowed) ? "0" : "1");
}

//==========================================================================
//
//  NEW VIDEO MENU -- johnfitz
//
//==========================================================================

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 void M_DrawCheckbox (int x, int y, int on);

extern qboolean	m_entersound;

#define VIDEO_OPTIONS_ITEMS 6
int		video_cursor_table[] = {48, 56, 64, 72, 88, 96};
int		video_options_cursor = 0;

typedef struct {int width,height;} vid_menu_mode;

int vid_menu_rwidth;
int vid_menu_rheight;

//TODO: replace these fixed-length arrays with hunk_allocated buffers

vid_menu_mode vid_menu_modes[MAX_MODE_LIST];
int vid_menu_nummodes=0;

int vid_menu_bpps[4];
int vid_menu_numbpps=0;

int vid_menu_rates[20];
int vid_menu_numrates=0;

/*
================
VID_Menu_Init
================
*/
void VID_Menu_Init (void)
{
	int i,j,h,w;

	for (i=1;i<nummodes;i++) //start i at mode 1 because 0 is windowed mode
	{
		w = modelist[i].width;
		h = modelist[i].height;

		for (j=0;j<vid_menu_nummodes;j++)
		{
			if (vid_menu_modes[j].width == w &&
				vid_menu_modes[j].height == h)
				break;
		}

		if (j==vid_menu_nummodes)
		{
			vid_menu_modes[j].width = w;
			vid_menu_modes[j].height = h;
			vid_menu_nummodes++;
		}
	}
}

/*
================
VID_Menu_RebuildBppList

regenerates bpp list based on current vid_width and vid_height
================
*/
void VID_Menu_RebuildBppList (void)
{
	int i,j,b;

	vid_menu_numbpps=0;

	for (i=1;i<nummodes;i++) //start i at mode 1 because 0 is windowed mode
	{
		//bpp list is limited to bpps available with current width/height
		if (modelist[i].width != vid_width.value ||
			modelist[i].height != vid_height.value)
			continue;

		b = modelist[i].bpp;

		for (j=0;j<vid_menu_numbpps;j++)
		{
			if (vid_menu_bpps[j] == b)
				break;
		}

		if (j==vid_menu_numbpps)
		{
			vid_menu_bpps[j] = b;
			vid_menu_numbpps++;
		}
	}

	//if there are no valid fullscreen bpps for this width/height, just pick one
	if (vid_menu_numbpps == 0)
	{
		Cvar_SetValue ("vid_bpp",(float)modelist[0].bpp);
		return;
	}

	//if vid_bpp is not in the new list, change vid_bpp
	for (i=0;i<vid_menu_numbpps;i++)
		if (vid_menu_bpps[i] == (int)(vid_bpp.value))
			break;

	if (i==vid_menu_numbpps)
		Cvar_SetValue ("vid_bpp",(float)vid_menu_bpps[0]);
}

/*
================
VID_Menu_RebuildRateList

regenerates rate list based on current vid_width, vid_height and vid_bpp
================
*/
void VID_Menu_RebuildRateList (void)
{
	int i,j,r;

	vid_menu_numrates=0;

	for (i=1;i<nummodes;i++) //start i at mode 1 because 0 is windowed mode
	{
		//rate list is limited to rates available with current width/height/bpp
		if (modelist[i].width != vid_width.value ||
			modelist[i].height != vid_height.value ||
			modelist[i].bpp != vid_bpp.value)
			continue;

		r = modelist[i].refreshrate;

		for (j=0;j<vid_menu_numrates;j++)
		{
			if (vid_menu_rates[j] == r)
				break;
		}

		if (j==vid_menu_numrates)
		{
			vid_menu_rates[j] = r;
			vid_menu_numrates++;
		}
	}

	//if there are no valid fullscreen refreshrates for this width/height, just pick one
	if (vid_menu_numrates == 0)
	{
		Cvar_SetValue ("vid_refreshrate",(float)modelist[0].refreshrate);
		return;
	}

	//if vid_refreshrate is not in the new list, change vid_refreshrate
	for (i=0;i<vid_menu_numrates;i++)
		if (vid_menu_rates[i] == (int)(vid_refreshrate.value))
			break;

	if (i==vid_menu_numrates)
		Cvar_SetValue ("vid_refreshrate",(float)vid_menu_rates[0]);
}

/*
================
VID_Menu_CalcAspectRatio

calculates aspect ratio for current vid_width/vid_height
================
*/
void VID_Menu_CalcAspectRatio (void)
{
	int w,h,f;
	w = vid_width.value;
	h = vid_height.value;
	f = 2;
	while (f < w && f < h)
	{
		if ((w/f)*f == w && (h/f)*f == h)
		{
			w/=f;
			h/=f;
			f=2;
		}
		else
			f++;
	}
	vid_menu_rwidth = w;
	vid_menu_rheight = h;
}

/*
================
VID_Menu_ChooseNextMode

chooses next resolution in order, then updates vid_width and
vid_height cvars, then updates bpp and refreshrate lists
================
*/
void VID_Menu_ChooseNextMode (int dir)
{
	int i;

	for (i=0;i<vid_menu_nummodes;i++)
	{
		if (vid_menu_modes[i].width == vid_width.value &&
			vid_menu_modes[i].height == vid_height.value)
			break;
	}

	if (i==vid_menu_nummodes) //can't find it in list, so it must be a custom windowed res
	{
		i = 0;
	}
	else
	{
		i+=dir;
		if (i>=vid_menu_nummodes)
			i = 0;
		else if (i<0)
			i = vid_menu_nummodes-1;
	}

	Cvar_SetValue ("vid_width",(float)vid_menu_modes[i].width);
	Cvar_SetValue ("vid_height",(float)vid_menu_modes[i].height);
	VID_Menu_RebuildBppList ();
	VID_Menu_RebuildRateList ();
	VID_Menu_CalcAspectRatio ();
}

/*
================
VID_Menu_ChooseNextBpp

chooses next bpp in order, then updates vid_bpp cvar, then updates refreshrate list
================
*/
void VID_Menu_ChooseNextBpp (int dir)
{
	int i;

	for (i=0;i<vid_menu_numbpps;i++)
	{
		if (vid_menu_bpps[i] == vid_bpp.value)
			break;
	}

	if (i==vid_menu_numbpps) //can't find it in list
	{
		i = 0;
	}
	else
	{
		i+=dir;
		if (i>=vid_menu_numbpps)
			i = 0;
		else if (i<0)
			i = vid_menu_numbpps-1;
	}

	Cvar_SetValue ("vid_bpp",(float)vid_menu_bpps[i]);
	VID_Menu_RebuildRateList ();
}

/*
================
VID_Menu_ChooseNextRate

chooses next refresh rate in order, then updates vid_refreshrate cvar
================
*/
void VID_Menu_ChooseNextRate (int dir)
{
	int i;

	for (i=0;i<vid_menu_numrates;i++)
	{
		if (vid_menu_rates[i] == vid_refreshrate.value)
			break;
	}

	if (i==vid_menu_numrates) //can't find it in list
	{
		i = 0;
	}
	else
	{
		i+=dir;
		if (i>=vid_menu_numrates)
			i = 0;
		else if (i<0)
			i = vid_menu_numrates-1;
	}

	Cvar_SetValue ("vid_refreshrate",(float)vid_menu_rates[i]);
}

/*
================
VID_MenuKey
================
*/
void VID_MenuKey (int key)
{
	switch (key)
	{
	case K_ESCAPE:
		VID_SyncCvars (); //sync cvars before leaving menu. FIXME: there are other ways to leave menu
		S_LocalSound ("misc/menu1.wav");
		M_Menu_Options_f ();
		break;

	case K_UPARROW:
		S_LocalSound ("misc/menu1.wav");
		video_options_cursor--;
		if (video_options_cursor < 0)
			video_options_cursor = VIDEO_OPTIONS_ITEMS-1;
		break;

	case K_DOWNARROW:
		S_LocalSound ("misc/menu1.wav");
		video_options_cursor++;
		if (video_options_cursor >= VIDEO_OPTIONS_ITEMS)
			video_options_cursor = 0;
		break;

	case K_LEFTARROW:
		S_LocalSound ("misc/menu3.wav");
		switch (video_options_cursor)
		{
		case 0:
			VID_Menu_ChooseNextMode (-1);
			break;
		case 1:
			VID_Menu_ChooseNextBpp (-1);
			break;
		case 2:
			VID_Menu_ChooseNextRate (-1);
			break;
		case 3:
			Cbuf_AddText ("toggle vid_fullscreen\n");
			break;
		case 4:
		case 5:
		default:
			break;
		}
		break;

	case K_RIGHTARROW:
		S_LocalSound ("misc/menu3.wav");
		switch (video_options_cursor)
		{
		case 0:
			VID_Menu_ChooseNextMode (1);
			break;
		case 1:
			VID_Menu_ChooseNextBpp (1);
			break;
		case 2:
			VID_Menu_ChooseNextRate (1);
			break;
		case 3:
			Cbuf_AddText ("toggle vid_fullscreen\n");
			break;
		case 4:
		case 5:
		default:
			break;
		}
		break;

	case K_ENTER:
		m_entersound = true;
		switch (video_options_cursor)
		{
		case 0:
			VID_Menu_ChooseNextMode (1);
			break;
		case 1:
			VID_Menu_ChooseNextBpp (1);
			break;
		case 2:
			VID_Menu_ChooseNextRate (1);
			break;
		case 3:
			Cbuf_AddText ("toggle vid_fullscreen\n");
			break;
		case 4:
			Cbuf_AddText ("vid_test\n");
			break;
		case 5:
			Cbuf_AddText ("vid_restart\n");
			break;
		default:
			break;
		}
		break;

	default:
		break;
	}
}

/*
================
VID_MenuDraw
================
*/
void VID_MenuDraw (void)
{
	int i = 0;
	qpic_t *p;
	char *title;

	M_DrawTransPic (16, 4, Draw_CachePic ("gfx/qplaque.lmp"));

	//p = Draw_CachePic ("gfx/vidmodes.lmp");
	p = Draw_CachePic ("gfx/p_option.lmp");
	M_DrawPic ( (320-p->width)/2, 4, p);

	// title
	title = "Video Options";
	M_PrintWhite ((320-8*strlen(title))/2, 32, title);

	// options
	M_Print (16, video_cursor_table[i], "        Video mode");
	M_Print (184, video_cursor_table[i], va("%ix%i (%i:%i)", (int)vid_width.value, (int)vid_height.value, vid_menu_rwidth, vid_menu_rheight));
	i++;

	M_Print (16, video_cursor_table[i], "       Color depth");
	M_Print (184, video_cursor_table[i], va("%i", (int)vid_bpp.value));
	i++;

	M_Print (16, video_cursor_table[i], "      Refresh rate");
	M_Print (184, video_cursor_table[i], va("%i Hz", (int)vid_refreshrate.value));
	i++;

	M_Print (16, video_cursor_table[i], "        Fullscreen");
	M_DrawCheckbox (184, video_cursor_table[i], (int)vid_fullscreen.value);
	i++;

	M_Print (16, video_cursor_table[i], "      Test changes");
	i++;

	M_Print (16, video_cursor_table[i], "     Apply changes");

	// cursor
	M_DrawCharacter (168, video_cursor_table[video_options_cursor], 12+((int)(realtime*4)&1));

	// notes          "345678901234567890123456789012345678"
//	M_Print (16, 172, "Windowed modes always use the desk- ");
//	M_Print (16, 180, "top color depth, and can never be   ");
//	M_Print (16, 188, "larger than the desktop resolution. ");
}

/*
================
VID_Menu_f
================
*/
void VID_Menu_f (void)
{
	key_dest = key_menu;
	m_state = m_video;
	m_entersound = true;

	//set all the cvars to match the current mode when entering the menu
	VID_SyncCvars ();

	//set up bpp and rate lists based on current cvars
	VID_Menu_RebuildBppList ();
	VID_Menu_RebuildRateList ();

	//aspect ratio
	VID_Menu_CalcAspectRatio ();
}