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thirtyflightsofloving/linux/rw_x11.c
Knightmare66 8f43c6bf9f More 64-bit portability fixes.
2020-08-01 22:54:35 -04:00

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/*
===========================================================================
Copyright (C) 1997-2001 Id Software, Inc.
This file is part of Quake 2 source code.
Quake 2 source code 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.
Quake 2 source code 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 Quake 2 source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
/*
** rw_x11.c
**
** This file contains ALL Linux specific stuff having to do with the
** software refresh. When a port is being made the following functions
** must be implemented by the port:
**
** SWimp_EndFrame
** SWimp_Init
** SWimp_InitGraphics
** SWimp_SetPalette
** SWimp_Shutdown
** SWimp_SwitchFullscreen
*/
#include <ctype.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <X11/extensions/XShm.h>
#include <X11/extensions/xf86dga.h>
#include "../ref_soft/r_local.h"
#include "../client/keys.h"
#include "../linux/rw_linux.h"
/*****************************************************************************/
static qboolean doShm;
static Display *dpy;
static Colormap x_cmap;
static Window win;
static GC x_gc;
static Visual *x_vis;
static XVisualInfo *x_visinfo;
static int win_x, win_y;
#define KEY_MASK (KeyPressMask | KeyReleaseMask)
#define MOUSE_MASK (ButtonPressMask | ButtonReleaseMask | \
PointerMotionMask | ButtonMotionMask )
#define X_MASK (KEY_MASK | MOUSE_MASK | VisibilityChangeMask | StructureNotifyMask | ExposureMask )
static int x_shmeventtype;
//static XShmSegmentInfo x_shminfo;
static qboolean oktodraw = false;
static qboolean ignorefirst = false;
static qboolean exposureflag = false;
static qboolean X11_active = false;
int XShmQueryExtension(Display *);
int XShmGetEventBase(Display *);
int current_framebuffer;
static XImage *x_framebuffer[2] = { 0, 0 };
static XShmSegmentInfo x_shminfo[2];
int config_notify=0;
int config_notify_width;
int config_notify_height;
typedef unsigned short PIXEL16;
typedef unsigned int PIXEL24;
static PIXEL16 st2d_8to16table[256];
static PIXEL24 st2d_8to24table[256];
static int shiftmask_fl=0;
static int r_shift,g_shift,b_shift;
static unsigned int r_mask,g_mask,b_mask;
void shiftmask_init(void)
{
unsigned int x;
r_mask=x_vis->red_mask;
g_mask=x_vis->green_mask;
b_mask=x_vis->blue_mask;
for(r_shift=-8,x=1;x<r_mask;x=x<<1)r_shift++;
for(g_shift=-8,x=1;x<g_mask;x=x<<1)g_shift++;
for(b_shift=-8,x=1;x<b_mask;x=x<<1)b_shift++;
shiftmask_fl=1;
}
PIXEL16 xlib_rgb16(int r,int g,int b)
{
PIXEL16 p;
if(shiftmask_fl==0) shiftmask_init();
p=0;
if(r_shift>0) {
p=(r<<(r_shift))&r_mask;
} else if(r_shift<0) {
p=(r>>(-r_shift))&r_mask;
} else p|=(r&r_mask);
if(g_shift>0) {
p|=(g<<(g_shift))&g_mask;
} else if(g_shift<0) {
p|=(g>>(-g_shift))&g_mask;
} else p|=(g&g_mask);
if(b_shift>0) {
p|=(b<<(b_shift))&b_mask;
} else if(b_shift<0) {
p|=(b>>(-b_shift))&b_mask;
} else p|=(b&b_mask);
return p;
}
PIXEL24 xlib_rgb24(int r,int g,int b)
{
PIXEL24 p;
if(shiftmask_fl==0) shiftmask_init();
p=0;
if(r_shift>0) {
p=(r<<(r_shift))&r_mask;
} else if(r_shift<0) {
p=(r>>(-r_shift))&r_mask;
} else p|=(r&r_mask);
if(g_shift>0) {
p|=(g<<(g_shift))&g_mask;
} else if(g_shift<0) {
p|=(g>>(-g_shift))&g_mask;
} else p|=(g&g_mask);
if(b_shift>0) {
p|=(b<<(b_shift))&b_mask;
} else if(b_shift<0) {
p|=(b>>(-b_shift))&b_mask;
} else p|=(b&b_mask);
return p;
}
void st2_fixup( XImage *framebuf, int x, int y, int width, int height)
{
int xi,yi;
unsigned char *src;
PIXEL16 *dest;
register int count, n;
if( (x<0)||(y<0) )return;
for (yi = y; yi < (y+height); yi++) {
src = &framebuf->data [yi * framebuf->bytes_per_line];
// Duff's Device
count = width;
n = (count + 7) / 8;
dest = ((PIXEL16 *)src) + x+width - 1;
src += x+width - 1;
switch (count % 8) {
case 0: do { *dest-- = st2d_8to16table[*src--];
case 7: *dest-- = st2d_8to16table[*src--];
case 6: *dest-- = st2d_8to16table[*src--];
case 5: *dest-- = st2d_8to16table[*src--];
case 4: *dest-- = st2d_8to16table[*src--];
case 3: *dest-- = st2d_8to16table[*src--];
case 2: *dest-- = st2d_8to16table[*src--];
case 1: *dest-- = st2d_8to16table[*src--];
} while (--n > 0);
}
// for(xi = (x+width-1); xi >= x; xi--) {
// dest[xi] = st2d_8to16table[src[xi]];
// }
}
}
void st3_fixup( XImage *framebuf, int x, int y, int width, int height)
{
int xi,yi;
unsigned char *src;
PIXEL24 *dest;
register int count, n;
if( (x<0)||(y<0) )return;
for (yi = y; yi < (y+height); yi++) {
src = &framebuf->data [yi * framebuf->bytes_per_line];
// Duff's Device
count = width;
n = (count + 7) / 8;
dest = ((PIXEL24 *)src) + x+width - 1;
src += x+width - 1;
switch (count % 8) {
case 0: do { *dest-- = st2d_8to24table[*src--];
case 7: *dest-- = st2d_8to24table[*src--];
case 6: *dest-- = st2d_8to24table[*src--];
case 5: *dest-- = st2d_8to24table[*src--];
case 4: *dest-- = st2d_8to24table[*src--];
case 3: *dest-- = st2d_8to24table[*src--];
case 2: *dest-- = st2d_8to24table[*src--];
case 1: *dest-- = st2d_8to24table[*src--];
} while (--n > 0);
}
// for(xi = (x+width-1); xi >= x; xi--) {
// dest[xi] = st2d_8to16table[src[xi]];
// }
}
}
// Console variables that we need to access from this module
/*****************************************************************************/
/* MOUSE */
/*****************************************************************************/
// this is inside the renderer shared lib, so these are called from vid_so
static qboolean mouse_avail;
static int mouse_buttonstate;
static int mouse_oldbuttonstate;
static int old_mouse_x, old_mouse_y;
static int mx, my;
static qboolean mouse_active = false;
static qboolean dgamouse = false;
static cvar_t *m_filter;
static cvar_t *in_mouse;
static cvar_t *in_dgamouse;
static cvar_t *vid_xpos; // X coordinate of window position
static cvar_t *vid_ypos; // Y coordinate of window position
static qboolean mlooking;
// state struct passed in Init
static in_state_t *in_state;
static cvar_t *sensitivity;
static cvar_t *lookstrafe;
static cvar_t *m_side;
static cvar_t *m_yaw;
static cvar_t *m_pitch;
static cvar_t *m_forward;
static cvar_t *freelook;
static void Force_CenterView_f (void)
{
in_state->viewangles[PITCH] = 0;
}
static void RW_IN_MLookDown (void)
{
mlooking = true;
}
static void RW_IN_MLookUp (void)
{
mlooking = false;
in_state->IN_CenterView_fp ();
}
void RW_IN_Init(in_state_t *in_state_p)
{
int mtype;
int i;
in_state = in_state_p;
// mouse variables
m_filter = ri.Cvar_Get ("m_filter", "0", 0);
in_mouse = ri.Cvar_Get ("in_mouse", "0", CVAR_ARCHIVE);
in_dgamouse = ri.Cvar_Get ("in_dgamouse", "1", CVAR_ARCHIVE);
freelook = ri.Cvar_Get( "freelook", "0", 0 );
lookstrafe = ri.Cvar_Get ("lookstrafe", "0", 0);
sensitivity = ri.Cvar_Get ("sensitivity", "3", 0);
m_pitch = ri.Cvar_Get ("m_pitch", "0.022", 0);
m_yaw = ri.Cvar_Get ("m_yaw", "0.022", 0);
m_forward = ri.Cvar_Get ("m_forward", "1", 0);
m_side = ri.Cvar_Get ("m_side", "0.8", 0);
ri.Cmd_AddCommand ("+mlook", RW_IN_MLookDown);
ri.Cmd_AddCommand ("-mlook", RW_IN_MLookUp);
ri.Cmd_AddCommand ("force_centerview", Force_CenterView_f);
mouse_avail = true;
}
void RW_IN_Shutdown(void)
{
mouse_avail = false;
}
/*
===========
IN_Commands
===========
*/
void RW_IN_Commands (void)
{
int i;
if (!mouse_avail)
return;
for (i=0 ; i<3 ; i++) {
if ( (mouse_buttonstate & (1<<i)) && !(mouse_oldbuttonstate & (1<<i)) )
in_state->Key_Event_fp (K_MOUSE1 + i, true);
if ( !(mouse_buttonstate & (1<<i)) && (mouse_oldbuttonstate & (1<<i)) )
in_state->Key_Event_fp (K_MOUSE1 + i, false);
}
mouse_oldbuttonstate = mouse_buttonstate;
}
/*
===========
IN_Move
===========
*/
void RW_IN_Move (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_state->in_strafe_state & 1) ||
(lookstrafe->value && mlooking ))
cmd->sidemove += m_side->value * mx;
else
in_state->viewangles[YAW] -= m_yaw->value * mx;
if ( (mlooking || freelook->value) &&
!(*in_state->in_strafe_state & 1))
{
in_state->viewangles[PITCH] += m_pitch->value * my;
}
else
{
cmd->forwardmove -= m_forward->value * my;
}
mx = my = 0;
}
// ========================================================================
// makes a null cursor
// ========================================================================
static Cursor CreateNullCursor(Display *display, Window root)
{
Pixmap cursormask;
XGCValues xgc;
GC gc;
XColor dummycolour;
Cursor cursor;
cursormask = XCreatePixmap(display, root, 1, 1, 1/*depth*/);
xgc.function = GXclear;
gc = XCreateGC(display, cursormask, GCFunction, &xgc);
XFillRectangle(display, cursormask, gc, 0, 0, 1, 1);
dummycolour.pixel = 0;
dummycolour.red = 0;
dummycolour.flags = 04;
cursor = XCreatePixmapCursor(display, cursormask, cursormask,
&dummycolour,&dummycolour, 0,0);
XFreePixmap(display,cursormask);
XFreeGC(display,gc);
return cursor;
}
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
ri.Con_Printf( PRINT_ALL, "Failed to detect XF86DGA Mouse\n" );
ri.Cvar_Set( "in_dgamouse", "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;
ignorefirst = 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 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 RW_IN_Frame (void)
{
}
void RW_IN_Activate(qboolean active)
{
if (active)
IN_ActivateMouse();
else
IN_DeactivateMouse ();
}
/*****************************************************************************/
void ResetFrameBuffer(void)
{
int mem;
int pwidth;
if (x_framebuffer[0])
{
free(x_framebuffer[0]->data);
free(x_framebuffer[0]);
}
// alloc an extra line in case we want to wrap, and allocate the z-buffer
pwidth = x_visinfo->depth / 8;
if (pwidth == 3) pwidth = 4;
mem = ((vid.width*pwidth+7)&~7) * vid.height;
x_framebuffer[0] = XCreateImage(dpy,
x_vis,
x_visinfo->depth,
ZPixmap,
0,
malloc(mem),
vid.width, vid.height,
32,
0);
if (!x_framebuffer[0])
Sys_Error("VID: XCreateImage failed\n");
vid.buffer = (byte*) (x_framebuffer[0]);
}
void ResetSharedFrameBuffers(void)
{
int size;
int key;
int minsize = getpagesize();
int frm;
for (frm=0 ; frm<2 ; frm++)
{
// free up old frame buffer memory
if (x_framebuffer[frm])
{
XShmDetach(dpy, &x_shminfo[frm]);
free(x_framebuffer[frm]);
shmdt(x_shminfo[frm].shmaddr);
}
// create the image
x_framebuffer[frm] = XShmCreateImage( dpy,
x_vis,
x_visinfo->depth,
ZPixmap,
0,
&x_shminfo[frm],
vid.width,
vid.height );
// grab shared memory
size = x_framebuffer[frm]->bytes_per_line
* x_framebuffer[frm]->height;
if (size < minsize)
Sys_Error("VID: Window must use at least %d bytes\n", minsize);
key = random();
x_shminfo[frm].shmid = shmget((key_t)key, size, IPC_CREAT|0777);
if (x_shminfo[frm].shmid==-1)
Sys_Error("VID: Could not get any shared memory\n");
// attach to the shared memory segment
x_shminfo[frm].shmaddr =
(void *) shmat(x_shminfo[frm].shmid, 0, 0);
ri.Con_Printf(PRINT_DEVELOPER, "MITSHM shared memory (id=%d, addr=0x%lx)\n",
x_shminfo[frm].shmid, (int) x_shminfo[frm].shmaddr);
x_framebuffer[frm]->data = x_shminfo[frm].shmaddr;
// get the X server to attach to it
if (!XShmAttach(dpy, &x_shminfo[frm]))
Sys_Error("VID: XShmAttach() failed\n");
XSync(dpy, 0);
shmctl(x_shminfo[frm].shmid, IPC_RMID, 0);
}
}
// ========================================================================
// Tragic death handler
// ========================================================================
void TragicDeath(int signal_num)
{
// XAutoRepeatOn(dpy);
XCloseDisplay(dpy);
Sys_Error("This death brought to you by the number %d\n", signal_num);
}
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: key = K_KP_PGUP; break;
case XK_Page_Up: key = K_PGUP; break;
case XK_KP_Page_Down: key = K_KP_PGDN; break;
case XK_Page_Down: key = K_PGDN; break;
case XK_KP_Home: key = K_KP_HOME; break;
case XK_Home: key = K_HOME; break;
case XK_KP_End: key = K_KP_END; break;
case XK_End: key = K_END; break;
case XK_KP_Left: key = K_KP_LEFTARROW; break;
case XK_Left: key = K_LEFTARROW; break;
case XK_KP_Right: key = K_KP_RIGHTARROW; break;
case XK_Right: key = K_RIGHTARROW; break;
case XK_KP_Down: key = K_KP_DOWNARROW; break;
case XK_Down: key = K_DOWNARROW; break;
case XK_KP_Up: key = K_KP_UPARROW; break;
case XK_Up: key = K_UPARROW; break;
case XK_Escape: key = K_ESCAPE; break;
case XK_KP_Enter: key = K_KP_ENTER; break;
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: key = K_KP_DEL; break;
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 = K_KP_5; break;
case XK_Insert:key = K_INS; break;
case XK_KP_Insert: key = K_KP_INS; break;
case XK_KP_Multiply: key = '*'; break;
case XK_KP_Add: key = K_KP_PLUS; break;
case XK_KP_Subtract: key = K_KP_MINUS; break;
case XK_KP_Divide: key = K_KP_SLASH; 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;
}
void HandleEvents(void)
{
XEvent event;
int b;
qboolean dowarp = false;
int mwx = vid.width/2;
int mwy = vid.height/2;
while (XPending(dpy)) {
XNextEvent(dpy, &event);
switch(event.type) {
case KeyPress:
case KeyRelease:
if (in_state && in_state->Key_Event_fp)
in_state->Key_Event_fp (XLateKey(&event.xkey), event.type == KeyPress);
break;
case MotionNotify:
if (ignorefirst) {
ignorefirst = false;
break;
}
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)
mouse_buttonstate |= 1<<b;
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)
mouse_buttonstate &= ~(1<<b);
break;
case CreateNotify :
ri.Cvar_Set( "vid_xpos", va("%d", event.xcreatewindow.x));
ri.Cvar_Set( "vid_ypos", va("%d", event.xcreatewindow.y));
vid_xpos->modified = false;
vid_ypos->modified = false;
win_x = event.xcreatewindow.x;
win_y = event.xcreatewindow.y;
break;
case ConfigureNotify :
ri.Cvar_Set( "vid_xpos", va("%d", event.xcreatewindow.x));
ri.Cvar_Set( "vid_ypos", va("%d", event.xcreatewindow.y));
vid_xpos->modified = false;
vid_ypos->modified = false;
win_x = event.xconfigure.x;
win_y = event.xconfigure.y;
config_notify_width = event.xconfigure.width;
config_notify_height = event.xconfigure.height;
if (config_notify_width != vid.width ||
config_notify_height != vid.height)
XMoveResizeWindow(dpy, win, win_x, win_y, vid.width, vid.height);
config_notify = 1;
break;
default:
if (doShm && event.type == x_shmeventtype)
oktodraw = true;
if (event.type == Expose && !event.xexpose.count)
exposureflag = true;
}
}
if (dowarp) {
/* move the mouse to the window center again */
XWarpPointer(dpy,None,win,0,0,0,0, vid.width/2,vid.height/2);
}
}
/*****************************************************************************/
/*
** SWimp_Init
**
** This routine is responsible for initializing the implementation
** specific stuff in a software rendering subsystem.
*/
int SWimp_Init( void *hInstance, void *wndProc )
{
vid_xpos = ri.Cvar_Get ("vid_xpos", "3", CVAR_ARCHIVE);
vid_ypos = ri.Cvar_Get ("vid_ypos", "22", CVAR_ARCHIVE);
// open the display
dpy = XOpenDisplay(0);
if (!dpy)
{
if (getenv("DISPLAY"))
Sys_Error("VID: Could not open display [%s]\n",
getenv("DISPLAY"));
else
Sys_Error("VID: Could not open local display\n");
}
// catch signals so i can turn on auto-repeat
{
struct sigaction sa;
sigaction(SIGINT, 0, &sa);
sa.sa_handler = TragicDeath;
sigaction(SIGINT, &sa, 0);
sigaction(SIGTERM, &sa, 0);
}
return true;
}
/*
** SWimp_InitGraphics
**
** This initializes the software refresh's implementation specific
** graphics subsystem. In the case of Windows it creates DIB or
** DDRAW surfaces.
**
** The necessary width and height parameters are grabbed from
** vid.width and vid.height.
*/
static qboolean SWimp_InitGraphics( qboolean fullscreen )
{
int pnum, i;
XVisualInfo template;
int num_visuals;
int template_mask;
Window root;
srandom(getpid());
// free resources in use
SWimp_Shutdown ();
// let the sound and input subsystems know about the new window
ri.Vid_NewWindow (vid.width, vid.height);
// XAutoRepeatOff(dpy);
// for debugging only
XSynchronize(dpy, True);
// check for command-line window size
template_mask = 0;
#if 0
// specify a visual id
if ((pnum=COM_CheckParm("-visualid")))
{
if (pnum >= com_argc-1)
Sys_Error("VID: -visualid <id#>\n");
template.visualid = Q_atoi(com_argv[pnum+1]);
template_mask = VisualIDMask;
}
// If not specified, use default visual
else
#endif
{
int screen;
screen = XDefaultScreen(dpy);
template.visualid =
XVisualIDFromVisual(XDefaultVisual(dpy, screen));
template_mask = VisualIDMask;
}
// pick a visual- warn if more than one was available
x_visinfo = XGetVisualInfo(dpy, template_mask, &template, &num_visuals);
if (num_visuals > 1)
{
printf("Found more than one visual id at depth %d:\n", template.depth);
for (i=0 ; i<num_visuals ; i++)
printf(" -visualid %d\n", (int)(x_visinfo[i].visualid));
}
else if (num_visuals == 0)
{
if (template_mask == VisualIDMask)
Sys_Error("VID: Bad visual id %d\n", template.visualid);
else
Sys_Error("VID: No visuals at depth %d\n", template.depth);
}
#if 0
printf("Using visualid %d:\n", (int)(x_visinfo->visualid));
printf(" screen %d\n", x_visinfo->screen);
printf(" red_mask 0x%x\n", (int)(x_visinfo->red_mask));
printf(" green_mask 0x%x\n", (int)(x_visinfo->green_mask));
printf(" blue_mask 0x%x\n", (int)(x_visinfo->blue_mask));
printf(" colormap_size %d\n", x_visinfo->colormap_size);
printf(" bits_per_rgb %d\n", x_visinfo->bits_per_rgb);
#endif
x_vis = x_visinfo->visual;
root = XRootWindow(dpy, x_visinfo->screen);
// setup attributes for main window
{
int attribmask = CWEventMask | CWColormap | CWBorderPixel;
XSetWindowAttributes attribs;
Colormap tmpcmap;
tmpcmap = XCreateColormap(dpy, root, x_vis, AllocNone);
attribs.event_mask = X_MASK;
attribs.border_pixel = 0;
attribs.colormap = tmpcmap;
// create the main window
win = XCreateWindow(dpy, root, (int)vid_xpos->value, (int)vid_ypos->value,
vid.width, vid.height, 0, x_visinfo->depth, InputOutput, x_vis,
attribmask, &attribs );
XStoreName(dpy, win, "Quake II");
if (x_visinfo->class != TrueColor)
XFreeColormap(dpy, tmpcmap);
}
if (x_visinfo->depth == 8)
{
// create and upload the palette
if (x_visinfo->class == PseudoColor)
{
x_cmap = XCreateColormap(dpy, win, x_vis, AllocAll);
XSetWindowColormap(dpy, win, x_cmap);
}
}
// create the GC
{
XGCValues xgcvalues;
int valuemask = GCGraphicsExposures;
xgcvalues.graphics_exposures = False;
x_gc = XCreateGC(dpy, win, valuemask, &xgcvalues );
}
XMapWindow(dpy, win);
XMoveWindow(dpy, win, (int)vid_xpos->value, (int)vid_ypos->value);
// wait for first exposure event
{
XEvent event;
exposureflag = false;
do
{
HandleEvents();
} while (!exposureflag);
}
// now safe to draw
// even if MITSHM is available, make sure it's a local connection
if (XShmQueryExtension(dpy))
{
char *displayname;
doShm = true;
displayname = (char *) getenv("DISPLAY");
if (displayname)
{
char *d = displayname;
while (*d && (*d != ':')) d++;
if (*d) *d = 0;
if (!(!strcasecmp(displayname, "unix") || !*displayname))
doShm = false;
}
}
if (doShm)
{
x_shmeventtype = XShmGetEventBase(dpy) + ShmCompletion;
ResetSharedFrameBuffers();
}
else
ResetFrameBuffer();
current_framebuffer = 0;
vid.rowbytes = x_framebuffer[0]->bytes_per_line;
vid.buffer = x_framebuffer[0]->data;
// XSynchronize(dpy, False);
X11_active = true;
return true;
}
/*
** SWimp_EndFrame
**
** This does an implementation specific copy from the backbuffer to the
** front buffer. In the Win32 case it uses BitBlt or BltFast depending
** on whether we're using DIB sections/GDI or DDRAW.
*/
void SWimp_EndFrame (void)
{
// if the window changes dimension, skip this frame
#if 0
if (config_notify)
{
fprintf(stderr, "config notify\n");
config_notify = 0;
vid.width = config_notify_width & ~7;
vid.height = config_notify_height;
if (doShm)
ResetSharedFrameBuffers();
else
ResetFrameBuffer();
vid.rowbytes = x_framebuffer[0]->bytes_per_line;
vid.buffer = x_framebuffer[current_framebuffer]->data;
vid.recalc_refdef = 1; // force a surface cache flush
Con_CheckResize();
Con_Clear_f();
return;
}
#endif
if (doShm)
{
if (x_visinfo->depth == 16)
st2_fixup( x_framebuffer[current_framebuffer], 0, 0, vid.width, vid.height);
else if (x_visinfo->depth == 24)
st3_fixup( x_framebuffer[current_framebuffer], 0, 0, vid.width, vid.height);
if (!XShmPutImage(dpy, win, x_gc,
x_framebuffer[current_framebuffer], 0, 0, 0, 0, vid.width, vid.height, True))
Sys_Error("VID_Update: XShmPutImage failed\n");
oktodraw = false;
while (!oktodraw)
HandleEvents();
current_framebuffer = !current_framebuffer;
vid.buffer = x_framebuffer[current_framebuffer]->data;
XSync(dpy, False);
}
else
{
if (x_visinfo->depth == 16)
st2_fixup( x_framebuffer[current_framebuffer], 0, 0, vid.width, vid.height);
else if (x_visinfo->depth == 24)
st3_fixup( x_framebuffer[current_framebuffer], 0, 0, vid.width, vid.height);
XPutImage(dpy, win, x_gc, x_framebuffer[0], 0, 0, 0, 0, vid.width, vid.height);
XSync(dpy, False);
}
}
/*
** SWimp_SetMode
*/
rserr_t SWimp_SetMode( int *pwidth, int *pheight, int mode, qboolean fullscreen )
{
rserr_t retval = rserr_ok;
ri.Con_Printf (PRINT_ALL, "setting mode %d:", mode );
if ( !ri.Vid_GetModeInfo( pwidth, pheight, mode ) )
{
ri.Con_Printf( PRINT_ALL, " invalid mode\n" );
return rserr_invalid_mode;
}
ri.Con_Printf( PRINT_ALL, " %d %d\n", *pwidth, *pheight);
if ( !SWimp_InitGraphics( false ) ) {
// failed to set a valid mode in windowed mode
return rserr_invalid_mode;
}
R_GammaCorrectAndSetPalette( ( const unsigned char * ) d_8to24table );
return retval;
}
/*
** SWimp_SetPalette
**
** System specific palette setting routine. A NULL palette means
** to use the existing palette. The palette is expected to be in
** a padded 4-byte xRGB format.
*/
void SWimp_SetPalette( const unsigned char *palette )
{
int i;
XColor colors[256];
if (!X11_active)
return;
if ( !palette )
palette = ( const unsigned char * ) sw_state.currentpalette;
for(i=0;i<256;i++) {
st2d_8to16table[i]= xlib_rgb16(palette[i*4], palette[i*4+1],palette[i*4+2]);
st2d_8to24table[i]= xlib_rgb24(palette[i*4], palette[i*4+1],palette[i*4+2]);
}
if (x_visinfo->class == PseudoColor && x_visinfo->depth == 8)
{
for (i=0 ; i<256 ; i++)
{
colors[i].pixel = i;
colors[i].flags = DoRed|DoGreen|DoBlue;
colors[i].red = palette[i*4] * 257;
colors[i].green = palette[i*4+1] * 257;
colors[i].blue = palette[i*4+2] * 257;
}
XStoreColors(dpy, x_cmap, colors, 256);
}
}
/*
** SWimp_Shutdown
**
** System specific graphics subsystem shutdown routine. Destroys
** DIBs or DDRAW surfaces as appropriate.
*/
void SWimp_Shutdown( void )
{
int i;
if (!X11_active)
return;
if (doShm) {
for (i = 0; i < 2; i++)
if (x_framebuffer[i]) {
XShmDetach(dpy, &x_shminfo[i]);
free(x_framebuffer[i]);
shmdt(x_shminfo[i].shmaddr);
x_framebuffer[i] = NULL;
}
} else if (x_framebuffer[0]) {
free(x_framebuffer[0]->data);
free(x_framebuffer[0]);
x_framebuffer[0] = NULL;
}
XDestroyWindow( dpy, win );
// XAutoRepeatOn(dpy);
// XCloseDisplay(dpy);
X11_active = false;
}
/*
** SWimp_AppActivate
*/
void SWimp_AppActivate( qboolean active )
{
}
//===============================================================================
/*
================
Sys_MakeCodeWriteable
================
*/
void Sys_MakeCodeWriteable (unsigned int startaddr, unsigned int length)
{
int r;
unsigned int addr;
int psize = getpagesize();
addr = (startaddr & ~(psize-1)) - psize;
// fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
// addr, startaddr+length, length);
r = mprotect((char*)addr, length + startaddr - addr + psize, 7);
if (r < 0)
Sys_Error("Protection change failed\n");
}
/*****************************************************************************/
/* KEYBOARD */
/*****************************************************************************/
Key_Event_fp_t Key_Event_fp;
void KBD_Init(Key_Event_fp_t fp)
{
Key_Event_fp = fp;
}
void KBD_Update(void)
{
// get events from x server
HandleEvents();
}
void KBD_Close(void)
{
}
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