/*
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.

*/

// screen.c -- master for refresh, status bar, console, chat, notify, etc

#include "quakedef.h"

/*

background clear
rendering
turtle/net/ram icons
sbar
centerprint / slow centerprint
notify lines
intermission / finale overlay
loading plaque
console
menu

required background clears
required update regions


syncronous draw mode or async
One off screen buffer, with updates either copied or xblited
Need to double buffer?


async draw will require the refresh area to be cleared, because it will be
xblited, but sync draw can just ignore it.

sync
draw

CenterPrint ()
SlowPrint ()
Screen_Update ();
Con_Printf ();

net 
turn off messages option

the refresh is allways rendered, unless the console is full screen


console is:
	notify lines
	half
	full
	

*/


int			glx, gly, glwidth, glheight;

// only the refresh window will be updated unless these variables are flagged 
int			scr_copytop;
int			scr_copyeverything;

float		scr_con_current;
float		scr_conlines;		// lines of console to display

float		oldscreensize, oldfov;
cvar_t		scr_viewsize = {"viewsize","100", true};
cvar_t		scr_fov = {"cg_fov","90"};	// 10 - 170
cvar_t		cg_conspeed = {"cg_conspeed","300"};
cvar_t		scr_centertime = {"scr_centertime","2"};
cvar_t		scr_showram = {"showram","1"};
cvar_t		scr_showturtle = {"cg_showturtle","0"};
cvar_t		scr_showpause = {"cg_showpause","1"};
cvar_t		scr_printspeed = {"scr_printspeed","8"};
cvar_t		gl_triplebuffer = {"gl_triplebuffer", "1", true };

extern	cvar_t	crosshair;

qboolean	scr_initialized;		// ready to draw

shader_t	*scr_ram;
shader_t	*scr_net;
shader_t	*scr_turtle;
extern shader_t *draw_conback;
extern shader_t *draw_disc; 
extern shader_t *draw_backtile;

int			scr_fullupdate;

int			clearconsole;
int			clearnotify;

extern int		sb_lines;		// <AWE> added "extern".

viddef_t	vid;				// global video state

vrect_t		scr_vrect;

qboolean	scr_disabled_for_loading;
qboolean	scr_drawloading;
float		scr_disabled_time;

qboolean	block_drawing;

void SCR_ScreenShot_f (void);

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

CENTER PRINTING

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

char		scr_centerstring[1024];
float		scr_centertime_start;	// for slow victory printing
float		scr_centertime_off;
int			scr_center_lines;
int			scr_erase_lines;
int			scr_erase_center;

/*
==============
SCR_CenterPrint

Called for important messages that should stay in the center of the screen
for a few moments
==============
*/
void SCR_CenterPrint (char *str)
{
	strncpy (scr_centerstring, str, sizeof(scr_centerstring)-1);
	scr_centertime_off = scr_centertime.value;
	scr_centertime_start = cl.time;

// count the number of lines for centering
	scr_center_lines = 1;
	while (*str)
	{
		if (*str == '\n')
			scr_center_lines++;
		str++;
	}
}


void SCR_DrawCenterString (void)
{
	char	*start;
	int		l;
	int		j;
	int		x, y;
	int		remaining;

// the finale prints the characters one at a time
	if (cl.intermission)
		remaining = scr_printspeed.value * (cl.time - scr_centertime_start);
	else
		remaining = 9999;

	scr_erase_center = 0;
	start = scr_centerstring;

	if (scr_center_lines <= 4)
		y = vid.height*0.35;
	else
		y = 48;

	do	
	{
	// scan the width of the line
		for (l=0 ; l<40 ; l++)
			if (start[l] == '\n' || !start[l])
				break;
		x = (vid.width - l*8)/2;

		for (j=0 ; j<l ; j++, x+=8)
		{
			Draw_Character (x, y, start[j]);	
			if (!remaining--)
				return;
		}
			
		y += 16;

		while (*start && *start != '\n')
			start++;

		if (!*start)
			break;
		start++;		// skip the \n
	} while (1);
}

void SCR_CheckDrawCenterString (void)
{
	scr_copytop = 1;
	if (scr_center_lines > scr_erase_lines)
		scr_erase_lines = scr_center_lines;

	scr_centertime_off -= host_frametime;
	
	if (scr_centertime_off <= 0 && !cl.intermission)
		return;
	if (key_dest != key_game)
		return;

	SCR_DrawCenterString ();
}

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

/*
====================
CalcFov
====================
*/
float CalcFov (float fov_x, float width, float height)
{
        float   a;
        float   x;

        if (fov_x < 1 || fov_x > 179)
                Sys_Error ("Bad fov: %f", fov_x);

        x = width/tan(fov_x/360*M_PI);

        a = atan (height/x);

        a = a*360/M_PI;

        return a;
}

/*
=================
SCR_CalcRefdef

Must be called whenever vid changes
Internal use only
=================
*/
static void SCR_CalcRefdef (void)
{
	float		size;
	int		h;
	qboolean		full = false;


	scr_fullupdate = 0;		// force a background redraw
	vid.recalc_refdef = 0;

// force the status bar to redraw
	Sbar_Changed ();

//========================================
	
// bound viewsize
	if (scr_viewsize.value < 30)
		Cvar_Set ("viewsize","30");
	if (scr_viewsize.value > 120)
		Cvar_Set ("viewsize","120");

// bound field of view
	if (scr_fov.value < 10)
		Cvar_Set ("cg_fov","10");
	if (scr_fov.value > 170)
		Cvar_Set ("cg_fov","170");

// intermission is always full screen	
	if (cl.intermission)
		size = 120;
	else
		size = scr_viewsize.value;

	if (size >= 120)
		sb_lines = 0;		// no status bar at all
	else if (size >= 110)
		sb_lines = 24;		// no inventory
	else
		sb_lines = 24+16+8;

	if (scr_viewsize.value >= 100.0) {
		full = true;
		size = 100.0;
	} else
		size = scr_viewsize.value;
	if (cl.intermission)
	{
		full = true;
		size = 100;
		sb_lines = 0;
	}
	size /= 100.0;

	h = vid.height - sb_lines;

	r_refdef.vrect.width = vid.width * size;
	if (r_refdef.vrect.width < 96)
	{
		size = 96.0 / r_refdef.vrect.width;
		r_refdef.vrect.width = 96;	// min for icons
	}

	r_refdef.vrect.height = vid.height * size;
	if (r_refdef.vrect.height > vid.height - sb_lines)
		r_refdef.vrect.height = vid.height - sb_lines;
	if (r_refdef.vrect.height > vid.height)
			r_refdef.vrect.height = vid.height;
	r_refdef.vrect.x = (vid.width - r_refdef.vrect.width)/2;
	if (full)
		r_refdef.vrect.y = 0;
	else 
		r_refdef.vrect.y = (h - r_refdef.vrect.height)/2;

	r_refdef.fov_x = scr_fov.value;
	r_refdef.fov_y = CalcFov (r_refdef.fov_x, r_refdef.vrect.width, r_refdef.vrect.height);

	scr_vrect = r_refdef.vrect;
}


/*
=================
SCR_SizeUp_f

Keybinding command
=================
*/
void SCR_SizeUp_f (void)
{
	Cvar_SetValue ("viewsize",scr_viewsize.value+10);
	vid.recalc_refdef = 1;
}


/*
=================
SCR_SizeDown_f

Keybinding command
=================
*/
void SCR_SizeDown_f (void)
{
	Cvar_SetValue ("viewsize",scr_viewsize.value-10);
	vid.recalc_refdef = 1;
}

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

/*
==================
SCR_Init
==================
*/
void SCR_Init (void)
{

	Cvar_RegisterVariable (&scr_fov);
	Cvar_RegisterVariable (&scr_viewsize);
	Cvar_RegisterVariable (&cg_conspeed);
	Cvar_RegisterVariable (&scr_showram);
	Cvar_RegisterVariable (&scr_showturtle);
	Cvar_RegisterVariable (&scr_showpause);
	Cvar_RegisterVariable (&scr_centertime);
	Cvar_RegisterVariable (&scr_printspeed);
	Cvar_RegisterVariable (&gl_triplebuffer);

//
// register our commands
//
	Cmd_AddCommand ("screenshot",SCR_ScreenShot_f);
	Cmd_AddCommand ("sizeup",SCR_SizeUp_f);
	Cmd_AddCommand ("sizedown",SCR_SizeDown_f);

	scr_initialized = true;
}

/*
==================
SCR_FindShaders

	PENTA: Find needed shaders, called after the shader system comes up
==================
*/
void SCR_FindShaders() {

	scr_ram = GL_ShaderForName ("screen/ram"); 
	scr_net = GL_ShaderForName ("screen/net"); 
	scr_turtle = GL_ShaderForName ("screen/turtle"); 

	draw_conback = GL_ShaderForName ("screen/conback");
	draw_disc = GL_ShaderForName ("screen/disc"); 
	draw_backtile = GL_ShaderForName ("screen/backtile");

}


/*
==============
SCR_DrawRam

  PENTA: Using a window for this is probably overkill
==============
*/
void SCR_DrawRam (void)
{
	if (!scr_ram) return;

	if (!scr_showram.value)
		return;
	
	if (!r_cache_thrash)
		return;

	Con_Printf("Thrash cache\n");

	Draw_Pic (scr_vrect.x+32, scr_vrect.y, scr_vrect.x+64, scr_vrect.y+32, scr_ram);
}

/*
==============
SCR_DrawTurtle

  PENTA: Using a window for this is probably overkill
==============
*/
void SCR_DrawTurtle (void)
{
	static int	count;

	if (!scr_turtle) return;
	
	if (!scr_showturtle.value)
		return;

	if (host_frametime < 0.1)
	{
		count = 0;
		return;
	}

	count++;
	if (count < 3)
		return;

	Draw_Pic (scr_vrect.x, scr_vrect.y, scr_vrect.x+32, scr_vrect.y+32, scr_turtle);
}

/*
==============
SCR_DrawNet

  PENTA: Using a window for this is probably overkill
==============
*/
void SCR_DrawNet (void)
{
	if (!scr_net) return;

	if (realtime - cl.last_received_message < 0.3)
		return;
	if (cls.demoplayback)
		return;

	Draw_Pic (scr_vrect.x+64, scr_vrect.y, scr_vrect.x+96, scr_vrect.y+32, scr_net);
}

/*
==============
DrawPause
==============
*/
void SCR_DrawPause (void)
{
	if (!scr_showpause.value)		// turn off for screenshots
		return;

	if (!cl.paused)
		return;

	M_DrawNamedWindow("paused");
}



/*
==============
SCR_DrawLoading
==============
*/
void SCR_DrawLoading (void)
{
	if (!scr_drawloading)
		return;
	
	M_DrawNamedWindow("loading");

}

/*
//muff - hacked out of SourceForge implementation + modified
//PENTA: Strange fps calc disadvantage is that is only does
//integer fps, well lazy me.
==============
SCR_DrawFPS
==============
*/

void SCR_DrawFPS (void)
{
	static double lastframetime;
	double t;
	extern int fps_count;
	static int lastfps;
	int x, y;
	char st[80];

	if (!cg_showfps.value & !sh_debuginfo.value)
		return;

	t = Sys_FloatTime ();
	if ((t - lastframetime) >= 1.0) {
		lastfps = fps_count;
		fps_count = 0;
		lastframetime = t;
	}

	if (sh_debuginfo.value)
	{
		sprintf(st, "FPS: %d NumLights: %d ClearsSaved %d\n", lastfps,numUsedShadowLights,numClearsSaved);
		x = 16;
		y = vid.height-80;
		Draw_String(x, y, st);
	}
	else
	{
		sprintf(st, "FPS: %d \n", lastfps);
		x = vid.width - 65; //Draw at the right to avoid clustering view - Eradicator
		y = 8;
		Draw_String(x, y, st);
	}

	if (!sh_debuginfo.value) //Only display the rest in debug info (willi reques) - Eradicator
		return;

	sprintf(st, "Alias Cache: %d Requests, %d Full Hits,  %d Partial Hits\n", aliasCacheRequests,aliasFullCacheHits,aliasPartialCacheHits);
	x = 16;
	y = vid.height-16;
	Draw_String(x, y, st);

	sprintf(st, "Brush Cache: %d Requests, %d Full Hits,  %d Partial Hits\n", brushCacheRequests,brushFullCacheHits,brushPartialCacheHits);
	x = 16;
	y = vid.height-32;
	Draw_String(x, y, st);

	sprintf(st, "Poly counts: %d Alias polys, %d Brush polys\n", c_alias_polys, c_brush_polys);
	x = 16;
	y = vid.height-48;
	Draw_String(x, y, st);

	sprintf(st, "Occlusion tests: %d lights cut, %d entities cut, %d meshes cut\n",	
		occlusion_cut_lights, occlusion_cut_entities, occlusion_cut_meshes);
	x = 16;
	y = vid.height-64;
	Draw_String(x, y, st);
}

/*
==============
SCR_DrawNumLights
PENTA:
==============
*/
void SCR_DrawNumLights (void)
{
	char st[256];
	int	modes[2];
	int i,width,height;
	if (!sh_showlightsciss.value) return;

	sprintf (st, "Lights: %i", numUsedShadowLights);
	Draw_String (0, 0, st);

	for (i=0; i<numUsedShadowLights; i++) {
		shadowlight_t *l = usedshadowlights[i];
		if (!l->shadowchainfilled) continue;
		width = l->scizz.coords[2]-l->scizz.coords[0];
		height = l->scizz.coords[3]-l->scizz.coords[1];
		sprintf(st, "+ %f %f %f",l->origin[0],l->origin[1],l->origin[2]);
		Draw_String(l->scizz.coords[0]+(width/2)-4,vid.height - l->scizz.coords[3]+(height/2)-8,st);
	}

	glGetIntegerv(GL_POLYGON_MODE,modes);
	glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
	//Draw scissor rectangles for all the active lights
	for (i=0; i<numUsedShadowLights; i++) {
		shadowlight_t *l = usedshadowlights[i];
		if (!l->shadowchainfilled) continue;
		width = l->scizz.coords[2]-l->scizz.coords[0];
		height = l->scizz.coords[3]-l->scizz.coords[1];
		Draw_FillRGB(l->scizz.coords[0],vid.height - l->scizz.coords[3],
						width,height,1.0f,0.0f,0.0f);
	}
	glPolygonMode(GL_FRONT,modes[0]);
	glPolygonMode(GL_BACK,modes[1]);
}


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


/*
==================
SCR_SetUpToDrawConsole
==================
*/
void SCR_SetUpToDrawConsole (void)
{
	Con_CheckResize ();
	
	if (scr_drawloading)
		return;		// never a console with loading plaque
		
// decide on the height of the console
	con_forcedup = !cl.worldmodel || cls.signon != SIGNONS;

	if (con_forcedup)
	{
		scr_conlines = vid.height;		// full screen
		scr_con_current = scr_conlines;
	}
	else if (key_dest == key_console)
		scr_conlines = vid.height/2;	// half screen
	else
		scr_conlines = 0;				// none visible
	
	if (scr_conlines < scr_con_current)
	{
		scr_con_current -= cg_conspeed.value*host_frametime;
		if (scr_conlines > scr_con_current)
			scr_con_current = scr_conlines;

	}
	else if (scr_conlines > scr_con_current)
	{
		scr_con_current += cg_conspeed.value*host_frametime;
		if (scr_conlines < scr_con_current)
			scr_con_current = scr_conlines;
	}

	if (clearconsole++ < vid.numpages)
	{
		Sbar_Changed ();
	}
	else if (clearnotify++ < vid.numpages)
	{
	}
	else
		con_notifylines = 0;
}
	
/*
==================
SCR_DrawConsole
==================
*/
void SCR_DrawConsole (void)
{
	if (scr_con_current)
	{
		scr_copyeverything = 1;
		Con_DrawConsole (scr_con_current, true);
		clearconsole = 0;
	}
	else
	{
		if (key_dest == key_game || key_dest == key_message)
			Con_DrawNotify ();	// only draw notify in game
	}
}


/* 
============================================================================== 
 
						SCREEN SHOTS 
 
============================================================================== 
*/ 


/* 
================== 
SCR_ScreenShot_f
<AWE> under MacOS X screenshots are saved in TIFF format.
================== 
*/  
void SCR_ScreenShot_f (void) 
{
	byte		*buffer;
	char		pcxname[80]; 
	char		checkname[MAX_OSPATH];
	int			i;

#if defined (__APPLE__) || defined (MACOSX)
        unsigned int	myRow;
        byte		*myBottom = NULL, *myTop = NULL, myStore;
        
        extern void 	TIF_WriteFile (char *, unsigned int, unsigned int, unsigned char *);

// 
// find a file name to save it to 
// 

	strcpy(pcxname,"screenshots/quake00000.tiff");
#else
        int	c, temp;

	strcpy(pcxname,"screenshots/quake00000.tga");
#endif /* __APPLE__ || MACOSX */


// 
// check screenshot dir  
//
	sprintf (checkname, "%s/screenshots", com_gamedir);
        Sys_mkdir(checkname);
	memset(checkname,0,MAX_OSPATH);        

		
	for (i=0 ; i<=99999 ; i++) 
	{ 
		/*
		pcxname[5] = i/10 + '0'; 
		pcxname[6] = i%10 + '0';
		*/
		int num = i;
		int counter = 10000;
		int k;

		for (k=0; k<5; k++) {
			pcxname[17+k] = '0'+(num/counter);
			num-=((num/counter)*counter);
			counter/=10;
		}
		
		sprintf (checkname, "%s/%s", com_gamedir, pcxname);
		if (Sys_FileTime(checkname) == -1)
			break;	// file doesn't exist
	} 
	if (i==100000) 
	{
#if defined (__APPLE__) || defined (MACOSX)
		Con_Printf ("SCR_ScreenShot_f: Couldn't create a TIFF file\n"); 
#else
		Con_Printf ("SCR_ScreenShot_f: Couldn't create a PCX file\n"); 
#endif /* __APPLE__ || MACOSX */
		return;
 	}
        
#if defined (__APPLE__) || defined (MACOSX)
        myRow = glwidth * 3;
	buffer = malloc (myRow * glheight);
	glReadPixels (glx, gly, glwidth, glheight, GL_RGB, GL_UNSIGNED_BYTE, buffer);

        // mirror the buffer [only vertical]:
        myTop = buffer;
        myBottom = buffer + myRow * (glheight - 1);
        while (myTop < myBottom)
        {
            for (i = 0; i < myRow; i++)
            {
                myStore = myTop[i];
                myTop[i] = myBottom[i];
                myBottom[i] = myStore;
            }
            myTop += myRow;
            myBottom -= myRow;
        }
        
        // write the file:
        TIF_WriteFile (pcxname, glwidth, glheight, buffer);
#else
	buffer = malloc(glwidth*glheight*3 + 18);
	memset (buffer, 0, 18);
	buffer[2] = 2;		// uncompressed type
	buffer[12] = glwidth&255;
	buffer[13] = glwidth>>8;
	buffer[14] = glheight&255;
	buffer[15] = glheight>>8;
	buffer[16] = 24;	// pixel size

	glReadPixels (glx, gly, glwidth, glheight, GL_RGB, GL_UNSIGNED_BYTE, buffer+18 ); 
	// swap rgb to bgr
	c = 18+glwidth*glheight*3;
	for (i=18 ; i<c ; i+=3)
	{
		temp = buffer[i];
		buffer[i] = buffer[i+2];
		buffer[i+2] = temp;
	}
	COM_WriteFile (pcxname, buffer, glwidth*glheight*3 + 18 );
#endif /* __APPLE__ ||ÊMACOSX */

	free (buffer);
	Con_Printf ("Wrote %s\n", pcxname);
} 


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


/*
===============
SCR_BeginLoadingPlaque

================
*/
void SCR_BeginLoadingPlaque (void)
{
	S_StopAllSounds (true);

	if (cls.state != ca_connected)
		return;

	if (cls.signon != SIGNONS)
		return;

// redraw with no console and the loading plaque
	Con_ClearNotify ();
	scr_centertime_off = 0;
	scr_con_current = 0;

	scr_drawloading = true;
	scr_fullupdate = 0;
	Sbar_Changed ();
	SCR_UpdateScreen ();
	scr_drawloading = false;

	scr_disabled_for_loading = true;
	scr_disabled_time = realtime;
	scr_fullupdate = 0;
}

/*
===============
SCR_EndLoadingPlaque

================
*/
void SCR_EndLoadingPlaque (void)
{
	scr_disabled_for_loading = false;
	scr_fullupdate = 0;
	Con_ClearNotify ();
}

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

char	*scr_notifystring;
qboolean	scr_drawdialog;

void SCR_DrawNotifyString (void)
{
	char	*start;
	int		l;
	int		j;
	int		x, y;

	start = scr_notifystring;

	y = vid.height*0.35;

	do	
	{
	// scan the width of the line
		for (l=0 ; l<40 ; l++)
			if (start[l] == '\n' || !start[l])
				break;
		x = (vid.width - l*8)/2;
		for (j=0 ; j<l ; j++, x+=8)
			Draw_Character (x, y, start[j]);	
			
		y += 16;

		while (*start && *start != '\n')
			start++;

		if (!*start)
			break;
		start++;		// skip the \n
	} while (1);
}

/*
==================
SCR_ModalMessage

Displays a text string in the center of the screen and waits for a Y or N
keypress.  
==================
*/
int SCR_ModalMessage (char *text)
{
	if (cls.state == ca_dedicated)
		return true;

	scr_notifystring = text;
 
// draw a fresh screen
	scr_fullupdate = 0;
	scr_drawdialog = true;
	SCR_UpdateScreen ();
	scr_drawdialog = false;
	
	S_ClearBuffer ();		// so dma doesn't loop current sound

	do
	{
		key_count = -1;		// wait for a key down and up
		Sys_SendKeyEvents ();
	} while (key_lastpress != 'y' && key_lastpress != 'n' && key_lastpress != K_ESCAPE);

	scr_fullupdate = 0;
	SCR_UpdateScreen ();

	return key_lastpress == 'y';
}


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

/*
===============
SCR_BringDownConsole

Brings the console down and fades the palettes back to normal
================
*/
void SCR_BringDownConsole (void)
{
	int		i;
	
	scr_centertime_off = 0;
	
	for (i=0 ; i<20 && scr_conlines != scr_con_current ; i++)
		SCR_UpdateScreen ();

	cl.cshifts[0].percent = 0;		// no area contents palette on next frame
}

void SCR_TileClear (void)
{
	if (r_refdef.vrect.x > 0) {
		// left
		Draw_TileClear (0, 0, r_refdef.vrect.x, vid.height - sb_lines);
		// right
		Draw_TileClear (r_refdef.vrect.x + r_refdef.vrect.width, 0, 
			vid.width - r_refdef.vrect.x + r_refdef.vrect.width, 
			vid.height - sb_lines);
	}
	if (r_refdef.vrect.y > 0) {
		// top
		Draw_TileClear (r_refdef.vrect.x, 0, 
			r_refdef.vrect.x + r_refdef.vrect.width, 
			r_refdef.vrect.y);
		// bottom
		Draw_TileClear (r_refdef.vrect.x,
			r_refdef.vrect.y + r_refdef.vrect.height, 
			r_refdef.vrect.width, 
			vid.height - sb_lines - 
			(r_refdef.vrect.height + r_refdef.vrect.y));
	}
}

/*
==================
SCR_UpdateScreen

This is called every frame, and can also be called explicitly to flush
text to the screen.

WARNING: be very careful calling this from elsewhere, because the refresh
needs almost the entire 256k of stack space!
==================
*/
void SCR_UpdateScreen (void)
{
	int				cross;
	int			i;

	if (block_drawing)
		return;

	vid.numpages = 2 + gl_triplebuffer.value;

	scr_copytop = 0;
	scr_copyeverything = 0;

	if (scr_disabled_for_loading)
	{
		if (realtime - scr_disabled_time > 60)
		{
			scr_disabled_for_loading = false;
			Con_Printf ("load failed.\n");
		}
		else
			return;
	}

	if (!scr_initialized || !con_initialized)
		return;				// not initialized yet


	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	
	//
	// determine size of refresh window
	//
	if (oldfov != scr_fov.value)
	{
		oldfov = scr_fov.value;
		vid.recalc_refdef = true;
	}

	if (oldscreensize != scr_viewsize.value)
	{
		oldscreensize = scr_viewsize.value;
		vid.recalc_refdef = true;
	}

	if (vid.recalc_refdef)
		SCR_CalcRefdef ();

//
// do 3D refresh drawing, and then update the screen
//
	SCR_SetUpToDrawConsole ();
	
	V_RenderView ();

	GL_Set2D ();

	//
	// PENTA: Draw glows
	//
	if (!con_forcedup) {
		//con_forcedup = we are still loading some sort of stuff
		//and not everything is set up yet (as the hulls are and we need
		//them for this)
		for (i=0; i<numUsedShadowLights; i++) {
			R_RenderGlow(usedshadowlights[i]);
		}
	}

	//
	// draw any areas not covered by the refresh
	//
	SCR_TileClear ();

	if (scr_drawdialog)
	{
		Sbar_Draw ();
		Draw_FadeScreen ();
		SCR_DrawNotifyString ();
		scr_copyeverything = true;
	}
	else if (scr_drawloading)
	{
		SCR_DrawLoading ();
		Sbar_Draw ();
	}
	else if (cl.intermission == 1 && key_dest == key_game)
	{
		Sbar_IntermissionOverlay ();
	}
	else if (cl.intermission == 2 && key_dest == key_game)
	{
		Sbar_FinaleOverlay ();
		SCR_CheckDrawCenterString ();
	}
/*	else if (cl.cinematictime > 0) {
		SCR_DrawCinematic();
		SCR_DrawConsole ();	
		M_Draw ();		
	}*/
	else
	{
		if (crosshair.value)
			Draw_Character (scr_vrect.x + scr_vrect.width/2, scr_vrect.y + scr_vrect.height/2, '+');	

		SCR_DrawRam ();
		SCR_DrawNet ();
		SCR_DrawTurtle ();
		//muff - to show FPS on screen
		SCR_DrawFPS ();
		SCR_DrawPause ();
		SCR_CheckDrawCenterString ();
		Sbar_Draw ();
		SCR_DrawNumLights ();
		SCR_DrawConsole ();	
		M_Draw ();
		glDisable(GL_BLEND);
	}


	V_UpdateFlashes ();
	GL_EndRendering ();
}