Quake: attempt 2duke3d

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799

1 files changed, 997 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/gl_vidlinuxglx.c b/apps/plugins/sdl/progs/quake/gl_vidlinuxglx.c
new file mode 100644
index 0000000..400adb4
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/gl_vidlinuxglx.c
@@ -0,0 +1,997 @@
+/*
+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.
+
+*/
+#include <termios.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/vt.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <signal.h>
+
+#include <dlfcn.h>
+
+#include "quakedef.h"
+
+#include <GL/glx.h>
+
+#include <X11/keysym.h>
+#include <X11/cursorfont.h>
+
+#include <X11/extensions/xf86dga.h>
+#include <X11/extensions/xf86vmode.h>
+
+#define WARP_WIDTH              320
+#define WARP_HEIGHT             200
+
+static Display *dpy = NULL;
+static int scrnum;
+static Window win;
+static GLXContext ctx = NULL;
+
+#define KEY_MASK (KeyPressMask | KeyReleaseMask)
+#define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
+		    PointerMotionMask | ButtonMotionMask )
+#define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | StructureNotifyMask )
+
+
+unsigned short	d_8to16table[256];
+unsigned		d_8to24table[256];
+unsigned char	d_15to8table[65536];
+
+cvar_t	vid_mode = {"vid_mode","0",false};
+ 
+static qboolean        mouse_avail;
+static qboolean        mouse_active;
+static int   mx, my;
+static int	old_mouse_x, old_mouse_y;
+
+static cvar_t in_mouse = {"in_mouse", "1", false};
+static cvar_t in_dgamouse = {"in_dgamouse", "1", false};
+static cvar_t m_filter = {"m_filter", "0"};
+
+qboolean dgamouse = false;
+qboolean vidmode_ext = false;
+
+static int win_x, win_y;
+
+static int scr_width, scr_height;
+
+static XF86VidModeModeInfo **vidmodes;
+static int default_dotclock_vidmode;
+static int num_vidmodes;
+static qboolean vidmode_active = false;
+
+/*-----------------------------------------------------------------------*/
+
+//int		texture_mode = GL_NEAREST;
+//int		texture_mode = GL_NEAREST_MIPMAP_NEAREST;
+//int		texture_mode = GL_NEAREST_MIPMAP_LINEAR;
+int		texture_mode = GL_LINEAR;
+//int		texture_mode = GL_LINEAR_MIPMAP_NEAREST;
+//int		texture_mode = GL_LINEAR_MIPMAP_LINEAR;
+
+int		texture_extension_number = 1;
+
+float		gldepthmin, gldepthmax;
+
+cvar_t	gl_ztrick = {"gl_ztrick","1"};
+
+const char *gl_vendor;
+const char *gl_renderer;
+const char *gl_version;
+const char *gl_extensions;
+
+void (*qglColorTableEXT) (int, int, int, int, int, const void*);
+void (*qgl3DfxSetPaletteEXT) (GLuint *);
+
+static float vid_gamma = 1.0;
+
+qboolean is8bit = false;
+qboolean isPermedia = false;
+qboolean gl_mtexable = false;
+
+/*-----------------------------------------------------------------------*/
+void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
+{
+}
+
+void D_EndDirectRect (int x, int y, int width, int height)
+{
+}
+
+static int XLateKey(XKeyEvent *ev)
+{
+
+	int key;
+	char buf[64];
+	KeySym keysym;
+
+	key = 0;
+
+	XLookupString(ev, buf, sizeof buf, &keysym, 0);
+
+	switch(keysym)
+	{
+		case XK_KP_Page_Up:	 
+		case XK_Page_Up:	 key = K_PGUP; break;
+
+		case XK_KP_Page_Down: 
+		case XK_Page_Down:	 key = K_PGDN; break;
+
+		case XK_KP_Home: 
+		case XK_Home:	 key = K_HOME; break;
+
+		case XK_KP_End:  
+		case XK_End:	 key = K_END; break;
+
+		case XK_KP_Left: 
+		case XK_Left:	 key = K_LEFTARROW; break;
+
+		case XK_KP_Right: 
+		case XK_Right:	key = K_RIGHTARROW;		break;
+
+		case XK_KP_Down: 
+		case XK_Down:	 key = K_DOWNARROW; break;
+
+		case XK_KP_Up:   
+		case XK_Up:		 key = K_UPARROW;	 break;
+
+		case XK_Escape: key = K_ESCAPE;		break;
+
+		case XK_KP_Enter: 
+		case XK_Return: key = K_ENTER;		 break;
+
+		case XK_Tab:		key = K_TAB;			 break;
+
+		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: key = K_BACKSPACE; break;
+
+		case XK_KP_Delete: 
+		case XK_Delete: key = K_DEL; break;
+
+		case XK_Pause:	key = K_PAUSE;		 break;
+
+		case XK_Shift_L:
+		case XK_Shift_R:	key = K_SHIFT;		break;
+
+		case XK_Execute: 
+		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;
+
+		case XK_KP_Begin: key = '5';	break;
+
+		case XK_KP_Insert: 
+		case XK_Insert:key = K_INS; break;
+
+		case XK_KP_Multiply: key = '*'; break;
+		case XK_KP_Add:  key = '+'; break;
+		case XK_KP_Subtract: key = '-'; break;
+		case XK_KP_Divide: key = '/'; break;
+
+#if 0
+		case 0x021: key = '1';break;/* [!] */
+		case 0x040: key = '2';break;/* [@] */
+		case 0x023: key = '3';break;/* [#] */
+		case 0x024: key = '4';break;/* [$] */
+		case 0x025: key = '5';break;/* [%] */
+		case 0x05e: key = '6';break;/* [^] */
+		case 0x026: key = '7';break;/* [&] */
+		case 0x02a: key = '8';break;/* [*] */
+		case 0x028: key = '9';;break;/* [(] */
+		case 0x029: key = '0';break;/* [)] */
+		case 0x05f: key = '-';break;/* [_] */
+		case 0x02b: key = '=';break;/* [+] */
+		case 0x07c: key = '\'';break;/* [|] */
+		case 0x07d: key = '[';break;/* [}] */
+		case 0x07b: key = ']';break;/* [{] */
+		case 0x022: key = '\'';break;/* ["] */
+		case 0x03a: key = ';';break;/* [:] */
+		case 0x03f: key = '/';break;/* [?] */
+		case 0x03e: key = '.';break;/* [>] */
+		case 0x03c: key = ',';break;/* [<] */
+#endif
+
+		default:
+			key = *(unsigned char*)buf;
+			if (key >= 'A' && key <= 'Z')
+				key = key - 'A' + 'a';
+			break;
+	} 
+
+	return key;
+}
+
+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;
+}
+
+static void install_grabs(void)
+{
+
+// inviso cursor
+	XDefineCursor(dpy, win, CreateNullCursor(dpy, win));
+
+	XGrabPointer(dpy, win,
+				 True,
+				 0,
+				 GrabModeAsync, GrabModeAsync,
+				 win,
+				 None,
+				 CurrentTime);
+
+	if (in_dgamouse.value) {
+		int MajorVersion, MinorVersion;
+
+		if (!XF86DGAQueryVersion(dpy, &MajorVersion, &MinorVersion)) { 
+			// unable to query, probalby not supported
+			Con_Printf( "Failed to detect XF86DGA Mouse\n" );
+			in_dgamouse.value = 0;
+		} else {
+			dgamouse = true;
+			XF86DGADirectVideo(dpy, DefaultScreen(dpy), XF86DGADirectMouse);
+			XWarpPointer(dpy, None, win, 0, 0, 0, 0, 0, 0);
+		}
+	} else {
+		XWarpPointer(dpy, None, win,
+					 0, 0, 0, 0,
+					 vid.width / 2, vid.height / 2);
+	}
+
+	XGrabKeyboard(dpy, win,
+				  False,
+				  GrabModeAsync, GrabModeAsync,
+				  CurrentTime);
+
+	mouse_active = true;
+
+//	XSync(dpy, True);
+}
+
+static void uninstall_grabs(void)
+{
+	if (!dpy || !win)
+		return;
+
+	if (dgamouse) {
+		dgamouse = false;
+		XF86DGADirectVideo(dpy, DefaultScreen(dpy), 0);
+	}
+
+	XUngrabPointer(dpy, CurrentTime);
+	XUngrabKeyboard(dpy, CurrentTime);
+
+// inviso cursor
+	XUndefineCursor(dpy, win);
+
+	mouse_active = false;
+}
+
+static void HandleEvents(void)
+{
+	XEvent event;
+	KeySym ks;
+	int b;
+	qboolean dowarp = false;
+	int mwx = vid.width/2;
+	int mwy = vid.height/2;
+
+	if (!dpy)
+		return;
+
+	while (XPending(dpy)) {
+		XNextEvent(dpy, &event);
+
+		switch (event.type) {
+		case KeyPress:
+		case KeyRelease:
+			Key_Event(XLateKey(&event.xkey), event.type == KeyPress);
+			break;
+
+		case MotionNotify:
+			if (mouse_active) {
+				if (dgamouse) {
+					mx += (event.xmotion.x + win_x) * 2;
+					my += (event.xmotion.y + win_y) * 2;
+				} 
+				else 
+				{
+					mx += ((int)event.xmotion.x - mwx) * 2;
+					my += ((int)event.xmotion.y - mwy) * 2;
+					mwx = event.xmotion.x;
+					mwy = event.xmotion.y;
+
+					if (mx || my)
+						dowarp = true;
+				}
+			}
+			break;
+
+			break;
+
+		case ButtonPress:
+			b=-1;
+			if (event.xbutton.button == 1)
+				b = 0;
+			else if (event.xbutton.button == 2)
+				b = 2;
+			else if (event.xbutton.button == 3)
+				b = 1;
+			if (b>=0)
+				Key_Event(K_MOUSE1 + b, true);
+			break;
+
+		case ButtonRelease:
+			b=-1;
+			if (event.xbutton.button == 1)
+				b = 0;
+			else if (event.xbutton.button == 2)
+				b = 2;
+			else if (event.xbutton.button == 3)
+				b = 1;
+			if (b>=0)
+				Key_Event(K_MOUSE1 + b, false);
+			break;
+
+		case CreateNotify :
+			win_x = event.xcreatewindow.x;
+			win_y = event.xcreatewindow.y;
+			break;
+
+		case ConfigureNotify :
+			win_x = event.xconfigure.x;
+			win_y = event.xconfigure.y;
+			break;
+		}
+	}
+
+	if (dowarp) {
+		/* move the mouse to the window center again */
+		XWarpPointer(dpy, None, win, 0, 0, 0, 0, vid.width / 2, vid.height / 2);
+	}
+
+}
+
+static void IN_DeactivateMouse( void ) 
+{
+	if (!mouse_avail || !dpy || !win)
+		return;
+
+	if (mouse_active) {
+		uninstall_grabs();
+		mouse_active = false;
+	}
+}
+
+static void IN_ActivateMouse( void ) 
+{
+	if (!mouse_avail || !dpy || !win)
+		return;
+
+	if (!mouse_active) {
+		mx = my = 0; // don't spazz
+		install_grabs();
+		mouse_active = true;
+	}
+}
+
+
+void VID_Shutdown(void)
+{
+	if (!ctx || !dpy)
+		return;
+	IN_DeactivateMouse();
+	if (dpy) {
+		if (ctx)
+			glXDestroyContext(dpy, ctx);
+		if (win)
+			XDestroyWindow(dpy, win);
+		if (vidmode_active)
+			XF86VidModeSwitchToMode(dpy, scrnum, vidmodes[0]);
+		XCloseDisplay(dpy);
+	}
+	vidmode_active = false;
+	dpy = NULL;
+	win = 0;
+	ctx = NULL;
+}
+
+void signal_handler(int sig)
+{
+	printf("Received signal %d, exiting...\n", sig);
+	Sys_Quit();
+	exit(0);
+}
+
+void InitSig(void)
+{
+	signal(SIGHUP, signal_handler);
+	signal(SIGINT, signal_handler);
+	signal(SIGQUIT, signal_handler);
+	signal(SIGILL, signal_handler);
+	signal(SIGTRAP, signal_handler);
+	signal(SIGIOT, signal_handler);
+	signal(SIGBUS, signal_handler);
+	signal(SIGFPE, signal_handler);
+	signal(SIGSEGV, signal_handler);
+	signal(SIGTERM, signal_handler);
+}
+
+void VID_ShiftPalette(unsigned char *p)
+{
+//	VID_SetPalette(p);
+}
+
+void	VID_SetPalette (unsigned char *palette)
+{
+	byte	*pal;
+	unsigned r,g,b;
+	unsigned v;
+	int     r1,g1,b1;
+	int		j,k,l,m;
+	unsigned short i;
+	unsigned	*table;
+	FILE *f;
+	char s[255];
+	int dist, bestdist;
+
+//
+// 8 8 8 encoding
+//
+	pal = palette;
+	table = d_8to24table;
+	for (i=0 ; i<256 ; i++)
+	{
+		r = pal[0];
+		g = pal[1];
+		b = pal[2];
+		pal += 3;
+		
+		v = (255<<24) + (r<<0) + (g<<8) + (b<<16);
+		*table++ = v;
+	}
+	d_8to24table[255] &= 0xffffff;	// 255 is transparent
+
+	for (i=0; i < (1<<15); i++) {
+		/* Maps
+		000000000000000
+		000000000011111 = Red  = 0x1F
+		000001111100000 = Blue = 0x03E0
+		111110000000000 = Grn  = 0x7C00
+		*/
+		r = ((i & 0x1F) << 3)+4;
+		g = ((i & 0x03E0) >> 2)+4;
+		b = ((i & 0x7C00) >> 7)+4;
+		pal = (unsigned char *)d_8to24table;
+		for (v=0,k=0,bestdist=10000*10000; v<256; v++,pal+=4) {
+			r1 = (int)r - (int)pal[0];
+			g1 = (int)g - (int)pal[1];
+			b1 = (int)b - (int)pal[2];
+			dist = (r1*r1)+(g1*g1)+(b1*b1);
+			if (dist < bestdist) {
+				k=v;
+				bestdist = dist;
+			}
+		}
+		d_15to8table[i]=k;
+	}
+}
+
+void CheckMultiTextureExtensions(void) 
+{
+	void *prjobj;
+
+	if (strstr(gl_extensions, "GL_SGIS_multitexture ") && !COM_CheckParm("-nomtex")) {
+		Con_Printf("Found GL_SGIS_multitexture...\n");
+
+		if ((prjobj = dlopen(NULL, RTLD_LAZY)) == NULL) {
+			Con_Printf("Unable to open symbol list for main program.\n");
+			return;
+		}
+
+		qglMTexCoord2fSGIS = (void *) dlsym(prjobj, "glMTexCoord2fSGIS");
+		qglSelectTextureSGIS = (void *) dlsym(prjobj, "glSelectTextureSGIS");
+
+		if (qglMTexCoord2fSGIS && qglSelectTextureSGIS) {
+			Con_Printf("Multitexture extensions found.\n");
+			gl_mtexable = true;
+		} else
+			Con_Printf("Symbol not found, disabled.\n");
+
+		dlclose(prjobj);
+	}
+}
+
+/*
+===============
+GL_Init
+===============
+*/
+void GL_Init (void)
+{
+	gl_vendor = glGetString (GL_VENDOR);
+	Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
+	gl_renderer = glGetString (GL_RENDERER);
+	Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
+
+	gl_version = glGetString (GL_VERSION);
+	Con_Printf ("GL_VERSION: %s\n", gl_version);
+	gl_extensions = glGetString (GL_EXTENSIONS);
+	Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
+
+//	Con_Printf ("%s %s\n", gl_renderer, gl_version);
+
+	CheckMultiTextureExtensions ();
+
+	glClearColor (1,0,0,0);
+	glCullFace(GL_FRONT);
+	glEnable(GL_TEXTURE_2D);
+
+	glEnable(GL_ALPHA_TEST);
+	glAlphaFunc(GL_GREATER, 0.666);
+
+	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
+	glShadeModel (GL_FLAT);
+
+	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);
+
+	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+//	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+}
+
+/*
+=================
+GL_BeginRendering
+
+=================
+*/
+void GL_BeginRendering (int *x, int *y, int *width, int *height)
+{
+	extern cvar_t gl_clear;
+
+	*x = *y = 0;
+	*width = scr_width;
+	*height = scr_height;
+
+//    if (!wglMakeCurrent( maindc, baseRC ))
+//		Sys_Error ("wglMakeCurrent failed");
+
+//	glViewport (*x, *y, *width, *height);
+}
+
+
+void GL_EndRendering (void)
+{
+	glFlush();
+	glXSwapBuffers(dpy, win);
+}
+
+qboolean VID_Is8bit(void)
+{
+	return is8bit;
+}
+
+void VID_Init8bitPalette(void) 
+{
+	// Check for 8bit Extensions and initialize them.
+	int i;
+	void *prjobj;
+
+	if ((prjobj = dlopen(NULL, RTLD_LAZY)) == NULL) {
+		Con_Printf("Unable to open symbol list for main program.\n");
+		return;
+	}
+
+	if (strstr(gl_extensions, "3DFX_set_global_palette") &&
+		(qgl3DfxSetPaletteEXT = dlsym(prjobj, "gl3DfxSetPaletteEXT")) != NULL) {
+		GLubyte table[256][4];
+		char *oldpal;
+
+		Con_SafePrintf("8-bit GL extensions enabled.\n");
+		glEnable( GL_SHARED_TEXTURE_PALETTE_EXT );
+		oldpal = (char *) d_8to24table; //d_8to24table3dfx;
+		for (i=0;i<256;i++) {
+			table[i][2] = *oldpal++;
+			table[i][1] = *oldpal++;
+			table[i][0] = *oldpal++;
+			table[i][3] = 255;
+			oldpal++;
+		}
+		qgl3DfxSetPaletteEXT((GLuint *)table);
+		is8bit = true;
+
+	} else if (strstr(gl_extensions, "GL_EXT_shared_texture_palette") &&
+		(qglColorTableEXT = dlsym(prjobj, "glColorTableEXT")) != NULL) {
+		char thePalette[256*3];
+		char *oldPalette, *newPalette;
+
+		Con_SafePrintf("8-bit GL extensions enabled.\n");
+		glEnable( GL_SHARED_TEXTURE_PALETTE_EXT );
+		oldPalette = (char *) d_8to24table; //d_8to24table3dfx;
+		newPalette = thePalette;
+		for (i=0;i<256;i++) {
+			*newPalette++ = *oldPalette++;
+			*newPalette++ = *oldPalette++;
+			*newPalette++ = *oldPalette++;
+			oldPalette++;
+		}
+		qglColorTableEXT(GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (void *) thePalette);
+		is8bit = true;
+	}
+	
+	dlclose(prjobj);
+}
+
+static void Check_Gamma (unsigned char *pal)
+{
+	float	f, inf;
+	unsigned char	palette[768];
+	int		i;
+
+	if ((i = COM_CheckParm("-gamma")) == 0) {
+		if ((gl_renderer && strstr(gl_renderer, "Voodoo")) ||
+			(gl_vendor && strstr(gl_vendor, "3Dfx")))
+			vid_gamma = 1;
+		else
+			vid_gamma = 0.7; // default to 0.7 on non-3dfx hardware
+	} else
+		vid_gamma = Q_atof(com_argv[i+1]);
+
+	for (i=0 ; i<768 ; i++)
+	{
+		f = pow ( (pal[i]+1)/256.0 , vid_gamma );
+		inf = f*255 + 0.5;
+		if (inf < 0)
+			inf = 0;
+		if (inf > 255)
+			inf = 255;
+		palette[i] = inf;
+	}
+
+	memcpy (pal, palette, sizeof(palette));
+}
+
+void VID_Init(unsigned char *palette)
+{
+	int i;
+	int attrib[] = {
+		GLX_RGBA,
+		GLX_RED_SIZE, 1,
+		GLX_GREEN_SIZE, 1,
+		GLX_BLUE_SIZE, 1,
+		GLX_DOUBLEBUFFER,
+		GLX_DEPTH_SIZE, 1,
+		None
+	};
+	char	gldir[MAX_OSPATH];
+	int width = 640, height = 480;
+	XSetWindowAttributes attr;
+	unsigned long mask;
+	Window root;
+	XVisualInfo *visinfo;
+	qboolean fullscreen = true;
+	int MajorVersion, MinorVersion;
+	int actualWidth, actualHeight;
+
+	Cvar_RegisterVariable (&vid_mode);
+	Cvar_RegisterVariable (&in_mouse);
+	Cvar_RegisterVariable (&in_dgamouse);
+	Cvar_RegisterVariable (&m_filter);
+	Cvar_RegisterVariable (&gl_ztrick);
+	
+	vid.maxwarpwidth = WARP_WIDTH;
+	vid.maxwarpheight = WARP_HEIGHT;
+	vid.colormap = host_colormap;
+	vid.fullbright = 256 - LittleLong (*((int *)vid.colormap + 2048));
+
+// interpret command-line params
+
+// set vid parameters
+	if ((i = COM_CheckParm("-window")) != 0)
+		fullscreen = false;
+
+	if ((i = COM_CheckParm("-width")) != 0)
+		width = atoi(com_argv[i+1]);
+
+	if ((i = COM_CheckParm("-height")) != 0)
+		height = atoi(com_argv[i+1]);
+
+	if ((i = COM_CheckParm("-conwidth")) != 0)
+		vid.conwidth = Q_atoi(com_argv[i+1]);
+	else
+		vid.conwidth = 640;
+
+	vid.conwidth &= 0xfff8; // make it a multiple of eight
+
+	if (vid.conwidth < 320)
+		vid.conwidth = 320;
+
+	// pick a conheight that matches with correct aspect
+	vid.conheight = vid.conwidth*3 / 4;
+
+	if ((i = COM_CheckParm("-conheight")) != 0)
+		vid.conheight = Q_atoi(com_argv[i+1]);
+	if (vid.conheight < 200)
+		vid.conheight = 200;
+
+	if (!(dpy = XOpenDisplay(NULL))) {
+		fprintf(stderr, "Error couldn't open the X display\n");
+		exit(1);
+	}
+
+	scrnum = DefaultScreen(dpy);
+	root = RootWindow(dpy, scrnum);
+
+	// Get video mode list
+	MajorVersion = MinorVersion = 0;
+	if (!XF86VidModeQueryVersion(dpy, &MajorVersion, &MinorVersion)) { 
+		vidmode_ext = false;
+	} else {
+		Con_Printf("Using XFree86-VidModeExtension Version %d.%d\n", MajorVersion, MinorVersion);
+		vidmode_ext = true;
+	}
+
+	visinfo = glXChooseVisual(dpy, scrnum, attrib);
+	if (!visinfo) {
+		fprintf(stderr, "qkHack: Error couldn't get an RGB, Double-buffered, Depth visual\n");
+		exit(1);
+	}
+
+	if (vidmode_ext) {
+		int best_fit, best_dist, dist, x, y;
+		
+		XF86VidModeGetAllModeLines(dpy, scrnum, &num_vidmodes, &vidmodes);
+
+		// Are we going fullscreen?  If so, let's change video mode
+		if (fullscreen) {
+			best_dist = 9999999;
+			best_fit = -1;
+
+			for (i = 0; i < num_vidmodes; i++) {
+				if (width > vidmodes[i]->hdisplay ||
+					height > vidmodes[i]->vdisplay)
+					continue;
+
+				x = width - vidmodes[i]->hdisplay;
+				y = height - vidmodes[i]->vdisplay;
+				dist = (x * x) + (y * y);
+				if (dist < best_dist) {
+					best_dist = dist;
+					best_fit = i;
+				}
+			}
+
+			if (best_fit != -1) {
+				actualWidth = vidmodes[best_fit]->hdisplay;
+				actualHeight = vidmodes[best_fit]->vdisplay;
+
+				// change to the mode
+				XF86VidModeSwitchToMode(dpy, scrnum, vidmodes[best_fit]);
+				vidmode_active = true;
+
+				// Move the viewport to top left
+				XF86VidModeSetViewPort(dpy, scrnum, 0, 0);
+			} else
+				fullscreen = 0;
+		}
+	}
+
+	/* window attributes */
+	attr.background_pixel = 0;
+	attr.border_pixel = 0;
+	attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
+	attr.event_mask = X_MASK;
+	if (vidmode_active) {
+		mask = CWBackPixel | CWColormap | CWSaveUnder | CWBackingStore | 
+			CWEventMask | CWOverrideRedirect;
+		attr.override_redirect = True;
+		attr.backing_store = NotUseful;
+		attr.save_under = False;
+	} else
+		mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
+
+	win = XCreateWindow(dpy, root, 0, 0, width, height,
+						0, visinfo->depth, InputOutput,
+						visinfo->visual, mask, &attr);
+	XMapWindow(dpy, win);
+
+	if (vidmode_active) {
+		XMoveWindow(dpy, win, 0, 0);
+		XRaiseWindow(dpy, win);
+		XWarpPointer(dpy, None, win, 0, 0, 0, 0, 0, 0);
+		XFlush(dpy);
+		// Move the viewport to top left
+		XF86VidModeSetViewPort(dpy, scrnum, 0, 0);
+	}
+
+	XFlush(dpy);
+
+	ctx = glXCreateContext(dpy, visinfo, NULL, True);
+
+	glXMakeCurrent(dpy, win, ctx);
+
+	scr_width = width;
+	scr_height = height;
+
+	if (vid.conheight > height)
+		vid.conheight = height;
+	if (vid.conwidth > width)
+		vid.conwidth = width;
+	vid.width = vid.conwidth;
+	vid.height = vid.conheight;
+
+	vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0);
+	vid.numpages = 2;
+
+	InitSig(); // trap evil signals
+
+	GL_Init();
+
+	sprintf (gldir, "%s/glquake", com_gamedir);
+	Sys_mkdir (gldir);
+
+	VID_SetPalette(palette);
+
+	// Check for 3DFX Extensions and initialize them.
+	VID_Init8bitPalette();
+
+	Con_SafePrintf ("Video mode %dx%d initialized.\n", width, height);
+
+	vid.recalc_refdef = 1;				// force a surface cache flush
+}
+
+void Sys_SendKeyEvents(void)
+{
+	HandleEvents();
+}
+
+void Force_CenterView_f (void)
+{
+	cl.viewangles[PITCH] = 0;
+}
+
+void IN_Init(void)
+{
+}
+
+void IN_Shutdown(void)
+{
+}
+
+/*
+===========
+IN_Commands
+===========
+*/
+void IN_Commands (void)
+{
+	if (!dpy || !win)
+		return;
+
+	if (vidmode_active || key_dest == key_game)
+		IN_ActivateMouse();
+	else
+		IN_DeactivateMouse ();
+}
+
+/*
+===========
+IN_Move
+===========
+*/
+void IN_MouseMove (usercmd_t *cmd)
+{
+	if (!mouse_avail)
+		return;
+   
+	if (m_filter.value)
+	{
+		mx = (mx + old_mouse_x) * 0.5;
+		my = (my + old_mouse_y) * 0.5;
+	}
+	old_mouse_x = mx;
+	old_mouse_y = my;
+
+	mx *= sensitivity.value;
+	my *= sensitivity.value;
+
+// add mouse X/Y movement to cmd
+	if ( (in_strafe.state & 1) || (lookstrafe.value && (in_mlook.state & 1) ))
+		cmd->sidemove += m_side.value * mx;
+	else
+		cl.viewangles[YAW] -= m_yaw.value * mx;
+	
+	if (in_mlook.state & 1)
+		V_StopPitchDrift ();
+		
+	if ( (in_mlook.state & 1) && !(in_strafe.state & 1))
+	{
+		cl.viewangles[PITCH] += m_pitch.value * my;
+		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 * my;
+		else
+			cmd->forwardmove -= m_forward.value * my;
+	}
+	mx = my = 0;
+}
+
+void IN_Move (usercmd_t *cmd)
+{
+	IN_MouseMove(cmd);
+}
+
+