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quakeforge/qw/source/vid_x11.c

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/*
vid_x11.c
General X11 video driver
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 1999-2000 contributors of the QuakeForge project
Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#define _BSD
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/types.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/extensions/XShm.h>
#ifdef HAVE_VIDMODE
# include <X11/extensions/xf86vmode.h>
#endif
#include "client.h"
#include "cmd.h"
#include "console.h"
#include "context_x11.h"
#include "cvar.h"
#include "d_local.h"
#include "dga_check.h"
#include "draw.h"
#include "host.h"
#include "menu.h"
#include "qargs.h"
#include "qendian.h"
#include "screen.h"
#include "sys.h"
#include "va.h"
extern viddef_t vid; // global video state
unsigned short d_8to16table[256];
static Colormap x_cmap;
static GC x_gc;
int XShmQueryExtension (Display *);
int XShmGetEventBase (Display *);
static qboolean doShm;
static XShmSegmentInfo x_shminfo[2];
static int current_framebuffer;
static XImage *x_framebuffer[2] = { 0, 0 };
static int verbose = 0;
int VID_options_items = 1;
static byte current_palette[768];
typedef unsigned short PIXEL16;
typedef unsigned long PIXEL24;
static PIXEL16 st2d_8to16table[256];
static PIXEL24 st2d_8to24table[256];
static int shiftmask_fl = 0;
static long r_shift, g_shift, b_shift;
static unsigned long r_mask, g_mask, b_mask;
cvar_t *vid_width;
cvar_t *vid_height;
static 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 <<= 1)
r_shift++;
for (g_shift = -8, x = 1; x < g_mask; x <<= 1)
g_shift++;
for (b_shift = -8, x = 1; x < b_mask; x <<= 1)
b_shift++;
shiftmask_fl = 1;
}
static PIXEL16
xlib_rgb16 (int r, int g, int b)
{
PIXEL16 p = 0;
if (!shiftmask_fl)
shiftmask_init ();
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;
}
static PIXEL24
xlib_rgb24 (int r, int g, int b)
{
PIXEL24 p = 0;
if (!shiftmask_fl)
shiftmask_init ();
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;
}
static void
st2_fixup (XImage * framebuf, int x, int y, int width, int height)
{
int xi, yi;
unsigned char *src;
PIXEL16 *dest;
if (x < 0 || y < 0)
return;
for (yi = y; yi < (y + height); yi++) {
src = &framebuf->data[yi * framebuf->bytes_per_line];
dest = (PIXEL16 *) src;
for (xi = (x + width - 1); xi >= x; xi--) {
dest[xi] = st2d_8to16table[src[xi]];
}
}
}
static void
st3_fixup (XImage * framebuf, int x, int y, int width, int height)
{
int 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]];
// }
}
}
/*
D_BeginDirectRect
*/
void
D_BeginDirectRect (int x, int y, byte * pbitmap, int width, int height)
{
// direct drawing of the "accessing disk" icon isn't supported
}
/*
D_EndDirectRect
*/
void
D_EndDirectRect (int x, int y, int width, int height)
{
// direct drawing of the "accessing disk" icon isn't supported
}
/*
VID_Gamma_f
Keybinding command
*/
byte vid_gamma[256];
void
VID_Gamma_f (void)
{
float g, f, inf;
int i;
if (Cmd_Argc () == 2) {
g = atof (Cmd_Argv (1));
for (i = 0; i < 255; i++) {
f = pow ((i + 1) / 256.0, g);
inf = f * 255 + 0.5;
inf = bound (0, inf, 255);
vid_gamma[i] = inf;
}
VID_SetPalette (current_palette);
vid.recalc_refdef = 1; // force a surface cache flush
}
}
static void
ResetFrameBuffer (void)
{
int tbuffersize, tcachesize;
void *vid_surfcache;
int mem, pwidth;
// Calculate the sizes we want first
tbuffersize = vid.width * vid.height * sizeof (*d_pzbuffer);
tcachesize = D_SurfaceCacheForRes (vid.width, vid.height);
if (x_framebuffer[0]) {
XDestroyImage (x_framebuffer[0]);
}
// Free the old z-buffer
if (d_pzbuffer) {
free (d_pzbuffer);
d_pzbuffer = NULL;
}
// Free the old surface cache
vid_surfcache = D_SurfaceCacheAddress ();
if (vid_surfcache) {
D_FlushCaches ();
free (vid_surfcache);
vid_surfcache = NULL;
}
// Allocate the new z-buffer
d_pzbuffer = calloc (tbuffersize, 1);
if (!d_pzbuffer) {
Sys_Error ("Not enough memory for video mode\n");
}
// Allocate the new surface cache; free the z-buffer if we fail
vid_surfcache = calloc (tcachesize, 1);
if (!vid_surfcache) {
free (d_pzbuffer);
d_pzbuffer = NULL;
Sys_Error ("Not enough memory for video mode\n");
}
D_InitCaches (vid_surfcache, tcachesize);
pwidth = x_visinfo->depth / 8;
if (pwidth == 3)
pwidth = 4;
mem = ((vid.width * pwidth + 7) & ~7) * vid.height;
x_framebuffer[0] = XCreateImage (x_disp, 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");
}
}
static void
ResetSharedFrameBuffers (void)
{
int tbuffersize, tcachesize;
void *vid_surfcache;
int size;
int key;
int minsize = getpagesize ();
int frm;
// Calculate the sizes we want first
tbuffersize = vid.width * vid.height * sizeof (*d_pzbuffer);
tcachesize = D_SurfaceCacheForRes (vid.width, vid.height);
// Free the old z-buffer
if (d_pzbuffer) {
free (d_pzbuffer);
d_pzbuffer = NULL;
}
// Free the old surface cache
vid_surfcache = D_SurfaceCacheAddress ();
if (vid_surfcache) {
D_FlushCaches ();
free (vid_surfcache);
vid_surfcache = NULL;
}
// Allocate the new z-buffer
d_pzbuffer = calloc (tbuffersize, 1);
if (!d_pzbuffer) {
Sys_Error ("Not enough memory for video mode\n");
}
// Allocate the new surface cache; free the z-buffer if we fail
vid_surfcache = calloc (tcachesize, 1);
if (!vid_surfcache) {
free (d_pzbuffer);
d_pzbuffer = NULL;
Sys_Error ("Not enough memory for video mode\n");
}
D_InitCaches (vid_surfcache, tcachesize);
for (frm = 0; frm < 2; frm++) {
// free up old frame buffer memory
if (x_framebuffer[frm]) {
XShmDetach (x_disp, &x_shminfo[frm]);
free (x_framebuffer[frm]);
shmdt (x_shminfo[frm].shmaddr);
}
// create the image
x_framebuffer[frm] = XShmCreateImage (x_disp, 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);
printf ("VID: shared memory id=%d, addr=0x%lx\n", x_shminfo[frm].shmid,
(long) x_shminfo[frm].shmaddr);
x_framebuffer[frm]->data = x_shminfo[frm].shmaddr;
// get the X server to attach to it
if (!XShmAttach (x_disp, &x_shminfo[frm]))
Sys_Error ("VID: XShmAttach() failed\n");
XSync (x_disp, 0);
shmctl (x_shminfo[frm].shmid, IPC_RMID, 0);
}
}
static void
event_shm (XEvent * event)
{
if (doShm)
oktodraw = true;
}
/*
VID_Init
Set up color translation tables and the window. Takes a 256-color 8-bit
palette. Palette data will go away after the call, so copy it if you'll
need it later.
*/
void
VID_Init (unsigned char *palette)
{
int pnum, i;
XVisualInfo template;
int num_visuals;
int template_mask;
VID_GetWindowSize (320, 200);
// plugin_load ("in_x11.so");
// Cmd_AddCommand ("gamma", VID_Gamma_f, "Change brightness level");
for (i = 0; i < 256; i++)
vid_gamma[i] = i;
vid.width = vid_width->int_val;
vid.height = vid_height->int_val;
Con_CheckResize (); // Now that we have a window size, fix console
vid.maxwarpwidth = WARP_WIDTH;
vid.maxwarpheight = WARP_HEIGHT;
vid.numpages = 2;
vid.colormap = host_colormap;
vid.fullbright = 256 - LittleLong (*((int *) vid.colormap + 2048));
srandom (getpid ());
verbose = COM_CheckParm ("-verbose");
// open the display
x11_open_display ();
template_mask = 0;
// specify a visual id
if ((pnum = COM_CheckParm ("-visualid"))) {
if (pnum >= com_argc - 1)
Sys_Error ("VID: -visualid <id#>\n");
template.visualid = atoi (com_argv[pnum + 1]);
template_mask = VisualIDMask;
} else { // If not specified, use default
// visual
template.visualid =
XVisualIDFromVisual (XDefaultVisual (x_disp, x_screen));
template_mask = VisualIDMask;
}
// pick a visual -- warn if more than one was available
x_visinfo = XGetVisualInfo (x_disp, template_mask, &template, &num_visuals);
x_vis = x_visinfo->visual;
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 %ld\n", template.visualid);
} else {
Sys_Error ("VID: No visuals at depth %d\n", template.depth);
}
}
}
if (verbose) {
printf ("Using visualid %d:\n", (int) x_visinfo->visualid);
printf (" class %d\n", x_visinfo->class);
printf (" screen %d\n", x_visinfo->screen);
printf (" depth %d\n", x_visinfo->depth);
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);
}
/* Setup attributes for main window */
x11_set_vidmode (vid.width, vid.height);
/* Create the main window */
x11_create_window (vid.width, vid.height);
/* Invisible cursor */
x11_create_null_cursor ();
if (x_visinfo->depth == 8) {
/* Create and upload the palette */
if (x_visinfo->class == PseudoColor) {
x_cmap = XCreateColormap (x_disp, x_win, x_vis, AllocAll);
VID_SetPalette (palette);
XSetWindowColormap (x_disp, x_win, x_cmap);
}
}
// create the GC
{
XGCValues xgcvalues;
int valuemask = GCGraphicsExposures;
xgcvalues.graphics_exposures = False;
x_gc = XCreateGC (x_disp, x_win, valuemask, &xgcvalues);
}
x11_grab_keyboard ();
// wait for first exposure event
{
XEvent event;
do {
XNextEvent (x_disp, &event);
if (event.type == Expose && !event.xexpose.count)
oktodraw = true;
} while (!oktodraw);
}
// now safe to draw
// even if MITSHM is available, make sure it's a local connection
if (XShmQueryExtension (x_disp)) {
char *displayname;
char *d;
doShm = true;
if ((displayname = XDisplayName (NULL))) {
if ((d = strchr (displayname, ':')))
*d = '\0';
if (!(!strcasecmp (displayname, "unix") || !*displayname))
doShm = false;
}
}
if (doShm) {
x_shmeventtype = XShmGetEventBase (x_disp) + ShmCompletion;
ResetSharedFrameBuffers ();
} else {
ResetFrameBuffer ();
}
current_framebuffer = 0;
vid.rowbytes = x_framebuffer[0]->bytes_per_line;
vid.buffer = x_framebuffer[0]->data;
vid.direct = 0;
vid.conbuffer = x_framebuffer[0]->data;
vid.conrowbytes = vid.rowbytes;
vid.conwidth = vid.width;
vid.conheight = vid.height;
vid.aspect = ((float) vid.height / (float) vid.width) * (320.0 / 240.0);
// XSynchronize (x_disp, False);
x11_add_event (x_shmeventtype, event_shm);
}
void
VID_Init_Cvars ()
{
x11_Init_Cvars ();
}
void
VID_ShiftPalette (unsigned char *p)
{
VID_SetPalette (p);
}
void
VID_SetPalette (unsigned char *palette)
{
int i;
XColor colors[256];
for (i = 0; i < 256; i++) {
st2d_8to16table[i] = xlib_rgb16 (palette[i * 3], palette[i * 3 + 1],
palette[i * 3 + 2]);
st2d_8to24table[i] = xlib_rgb24 (palette[i * 3], palette[i * 3 + 1],
palette[i * 3 + 2]);
}
if (x_visinfo->class == PseudoColor && x_visinfo->depth == 8) {
if (palette != current_palette) {
memcpy (current_palette, palette, 768);
}
for (i = 0; i < 256; i++) {
colors[i].pixel = i;
colors[i].flags = DoRed | DoGreen | DoBlue;
colors[i].red = vid_gamma[palette[i * 3]] * 256;
colors[i].green = vid_gamma[palette[i * 3 + 1]] * 256;
colors[i].blue = vid_gamma[palette[i * 3 + 2]] * 256;
}
XStoreColors (x_disp, x_cmap, colors, 256);
}
}
/*
VID_Shutdown
Restore video mode
*/
void
VID_Shutdown (void)
{
Sys_Printf ("VID_Shutdown\n");
if (x_disp) {
x11_restore_vidmode ();
x11_close_display ();
}
}
static int config_notify = 0;
static int config_notify_width;
static int config_notify_height;
/*
VID_Update
Flush the given rectangles from the view buffer to the screen.
*/
void
VID_Update (vrect_t *rects)
{
/* If the window changes dimension, skip this frame. */
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.conbuffer = vid.buffer;
vid.conwidth = vid.width;
vid.conheight = vid.height;
vid.conrowbytes = vid.rowbytes;
vid.recalc_refdef = 1; /* force a surface cache flush */
Con_CheckResize ();
Con_Clear_f ();
return;
}
while (rects) {
switch (x_visinfo->depth) {
case 16:
st2_fixup (x_framebuffer[current_framebuffer],
rects->x, rects->y, rects->width, rects->height);
break;
case 24:
st3_fixup (x_framebuffer[current_framebuffer],
rects->x, rects->y, rects->width, rects->height);
break;
}
if (doShm) {
if (!XShmPutImage (x_disp, x_win, x_gc,
x_framebuffer[current_framebuffer],
rects->x, rects->y, rects->x, rects->y,
rects->width, rects->height, True)) {
Sys_Error ("VID_Update: XShmPutImage failed\n");
}
oktodraw = false;
while (!oktodraw)
x11_process_event ();
rects = rects->pnext;
current_framebuffer = !current_framebuffer;
vid.buffer = x_framebuffer[current_framebuffer]->data;
vid.conbuffer = vid.buffer;
} else {
if (!XPutImage (x_disp, x_win, x_gc, x_framebuffer[0],
rects->x, rects->y, rects->x, rects->y,
rects->width, rects->height)) {
Sys_Error ("VID_Update: XPutImage failed\n");
}
rects = rects->pnext;
}
}
XSync (x_disp, False);
scr_fullupdate = 0;
}
static qboolean dither;
void
VID_DitherOn (void)
{
if (!dither) {
vid.recalc_refdef = 1;
dither = true;
}
}
void
VID_DitherOff (void)
{
if (dither) {
vid.recalc_refdef = 1;
dither = false;
}
}
void
VID_LockBuffer (void)
{
}
void
VID_UnlockBuffer (void)
{
}
void
VID_SetCaption (char *text)
{
if (text && *text) {
char *temp = strdup (text);
x11_set_caption (va ("%s %s: %s", PROGRAM, VERSION, temp));
free (temp);
} else {
x11_set_caption (va ("%s %s", PROGRAM, VERSION));
}
}
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