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quake2forge/solaris/vid_so.c

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/*
Copyright (C) 1997-2001 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.
*/
// Main windowed and fullscreen graphics interface module. This module
// is used for both the software and OpenGL rendering versions of the
// Quake refresh engine.
#include <assert.h>
#include <dlfcn.h> // ELF dl loader
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include "../client/client.h"
#include "../solaris/rw_solaris.h"
// Structure containing functions exported from refresh DLL
refexport_t re;
// Console variables that we need to access from this module
cvar_t *vid_gamma;
cvar_t *vid_ref; // Name of Refresh DLL loaded
cvar_t *vid_xpos; // X coordinate of window position
cvar_t *vid_ypos; // Y coordinate of window position
cvar_t *vid_fullscreen;
// Global variables used internally by this module
viddef_t viddef; // global video state; used by other modules
void *reflib_library; // Handle to refresh DLL
qboolean reflib_active = 0;
#define VID_NUM_MODES ( sizeof( vid_modes ) / sizeof( vid_modes[0] ) )
/** KEYBOARD **************************************************************/
void Do_Key_Event(int key, qboolean down);
void (*KBD_Update_fp)(void);
void (*KBD_Init_fp)(Key_Event_fp_t fp);
void (*KBD_Close_fp)(void);
/** MOUSE *****************************************************************/
in_state_t in_state;
void (*RW_IN_Init_fp)(in_state_t *in_state_p);
void (*RW_IN_Shutdown_fp)(void);
void (*RW_IN_Activate_fp)(qboolean active);
void (*RW_IN_Commands_fp)(void);
void (*RW_IN_Move_fp)(usercmd_t *cmd);
void (*RW_IN_Frame_fp)(void);
void Real_IN_Init (void);
/*
==========================================================================
DLL GLUE
==========================================================================
*/
#define MAXPRINTMSG 4096
void VID_Printf (int print_level, char *fmt, ...)
{
va_list argptr;
char msg[MAXPRINTMSG];
va_start (argptr,fmt);
vsnprintf (msg,MAXPRINTMSG,fmt,argptr);
va_end (argptr);
if (print_level == PRINT_ALL)
Com_Printf ("%s", msg);
else
Com_DPrintf ("%s", msg);
}
void VID_Error (int err_level, char *fmt, ...)
{
va_list argptr;
char msg[MAXPRINTMSG];
va_start (argptr,fmt);
vsnprintf (msg,MAXPRINTMSG,fmt,argptr);
va_end (argptr);
Com_Error (err_level,"%s", msg);
}
//==========================================================================
/*
============
VID_Restart_f
Console command to re-start the video mode and refresh DLL. We do this
simply by setting the modified flag for the vid_ref variable, which will
cause the entire video mode and refresh DLL to be reset on the next frame.
============
*/
void VID_Restart_f (void)
{
vid_ref->modified = true;
}
/*
** VID_GetModeInfo
*/
typedef struct vidmode_s
{
const char *description;
int width, height;
int mode;
} vidmode_t;
vidmode_t vid_modes[] =
{
{ "Mode 0: 320x240", 320, 240, 0 },
{ "Mode 1: 400x300", 400, 300, 1 },
{ "Mode 2: 512x384", 512, 384, 2 },
{ "Mode 3: 640x480", 640, 480, 3 },
{ "Mode 4: 800x600", 800, 600, 4 },
{ "Mode 5: 960x720", 960, 720, 5 },
{ "Mode 6: 1024x768", 1024, 768, 6 },
{ "Mode 7: 1152x864", 1152, 864, 7 },
{ "Mode 8: 1280x1024", 1280, 1024, 8 },
{ "Mode 9: 1600x1200", 1600, 1200, 9 },
{ "Mode 10: 2048x1536", 2048, 1536, 10 }
};
qboolean VID_GetModeInfo( int *width, int *height, int mode )
{
if ( mode < 0 || mode >= VID_NUM_MODES )
return false;
*width = vid_modes[mode].width;
*height = vid_modes[mode].height;
return true;
}
/*
** VID_NewWindow
*/
void VID_NewWindow ( int width, int height)
{
viddef.width = width;
viddef.height = height;
}
void VID_FreeReflib (void)
{
if (reflib_library) {
if (KBD_Close_fp)
KBD_Close_fp();
if (RW_IN_Shutdown_fp)
RW_IN_Shutdown_fp();
dlclose(reflib_library);
}
KBD_Init_fp = NULL;
KBD_Update_fp = NULL;
KBD_Close_fp = NULL;
RW_IN_Init_fp = NULL;
RW_IN_Shutdown_fp = NULL;
RW_IN_Activate_fp = NULL;
RW_IN_Commands_fp = NULL;
RW_IN_Move_fp = NULL;
RW_IN_Frame_fp = NULL;
memset (&re, 0, sizeof(re));
reflib_library = NULL;
reflib_active = false;
}
/*
==============
VID_LoadRefresh
==============
*/
qboolean VID_LoadRefresh( char *name )
{
refimport_t ri;
GetRefAPI_t GetRefAPI;
char fn[MAX_OSPATH];
char *path;
struct stat st;
extern uid_t saved_euid;
if ( reflib_active )
{
if (KBD_Close_fp)
KBD_Close_fp();
if (RW_IN_Shutdown_fp)
RW_IN_Shutdown_fp();
KBD_Close_fp = NULL;
RW_IN_Shutdown_fp = NULL;
re.Shutdown();
VID_FreeReflib ();
}
Com_Printf( "------- Loading %s -------\n", name );
//regain root
seteuid(saved_euid);
path = Cvar_Get ("basedir", ".", CVAR_NOSET)->string;
snprintf (fn, MAX_OSPATH, "%s/%s", path, name );
if (stat(fn, &st) == -1) {
Com_Printf( "LoadLibrary(\"%s\") failed: %s\n", name, strerror(errno));
return false;
}
// permission checking
if (strstr(fn, "softx") == NULL &&
strstr(fn, "glx") == NULL &&
strstr(fn, "softsdl") == NULL &&
strstr(fn, "sdlgl") == NULL) { // softx doesn't require root
#if 0
if (st.st_uid != 0) {
Com_Printf( "LoadLibrary(\"%s\") failed: ref is not owned by root\n", name);
return false;
}
if ((st.st_mode & 0777) & ~0700) {
Com_Printf( "LoadLibrary(\"%s\") failed: invalid permissions, must be 700 for security considerations\n", name);
return false;
}
#endif
} else {
// softx requires we give up root now
setreuid(getuid(), getuid());
setegid(getgid());
}
if ( ( reflib_library = dlopen( fn, RTLD_LAZY ) ) == 0 )
{
Com_Printf( "LoadLibrary(\"%s\") failed: %s\n", name , dlerror());
return false;
}
Com_Printf( "LoadLibrary(\"%s\")\n", fn );
ri.Cmd_AddCommand = Cmd_AddCommand;
ri.Cmd_RemoveCommand = Cmd_RemoveCommand;
ri.Cmd_Argc = Cmd_Argc;
ri.Cmd_Argv = Cmd_Argv;
ri.Cmd_ExecuteText = Cbuf_ExecuteText;
ri.Con_Printf = VID_Printf;
ri.Sys_Error = VID_Error;
ri.FS_LoadFile = FS_LoadFile;
ri.FS_FreeFile = FS_FreeFile;
ri.FS_Gamedir = FS_Gamedir;
ri.Cvar_Get = Cvar_Get;
ri.Cvar_Set = Cvar_Set;
ri.Cvar_SetValue = Cvar_SetValue;
ri.Vid_GetModeInfo = VID_GetModeInfo;
ri.Vid_MenuInit = VID_MenuInit;
ri.Vid_NewWindow = VID_NewWindow;
if ( ( GetRefAPI = (void *) dlsym( reflib_library, "GetRefAPI" ) ) == 0 )
Com_Error( ERR_FATAL, "dlsym failed on %s", name );
re = GetRefAPI( ri );
if (re.api_version != API_VERSION)
{
VID_FreeReflib ();
Com_Error (ERR_FATAL, "%s has incompatible api_version", name);
}
/* Init IN (Mouse) */
in_state.IN_CenterView_fp = IN_CenterView;
in_state.Key_Event_fp = Do_Key_Event;
in_state.viewangles = cl.viewangles;
in_state.in_strafe_state = &in_strafe.state;
if ((RW_IN_Init_fp = dlsym(reflib_library, "RW_IN_Init")) == NULL ||
(RW_IN_Shutdown_fp = dlsym(reflib_library, "RW_IN_Shutdown")) == NULL ||
(RW_IN_Activate_fp = dlsym(reflib_library, "RW_IN_Activate")) == NULL ||
(RW_IN_Commands_fp = dlsym(reflib_library, "RW_IN_Commands")) == NULL ||
(RW_IN_Move_fp = dlsym(reflib_library, "RW_IN_Move")) == NULL ||
(RW_IN_Frame_fp = dlsym(reflib_library, "RW_IN_Frame")) == NULL)
Sys_Error("No RW_IN functions in REF.\n");
Real_IN_Init();
if ( re.Init( 0, 0 ) == -1 )
{
re.Shutdown();
VID_FreeReflib ();
return false;
}
/* Init KBD */
#if 1
if ((KBD_Init_fp = dlsym(reflib_library, "KBD_Init")) == NULL ||
(KBD_Update_fp = dlsym(reflib_library, "KBD_Update")) == NULL ||
(KBD_Close_fp = dlsym(reflib_library, "KBD_Close")) == NULL)
Sys_Error("No KBD functions in REF.\n");
#else
{
void KBD_Init(void);
void KBD_Update(void);
void KBD_Close(void);
KBD_Init_fp = KBD_Init;
KBD_Update_fp = KBD_Update;
KBD_Close_fp = KBD_Close;
}
#endif
KBD_Init_fp(Do_Key_Event);
Key_ClearStates();
// give up root now
setreuid(getuid(), getuid());
setegid(getgid());
Com_Printf( "------------------------------------\n");
reflib_active = true;
return true;
}
/*
============
VID_CheckChanges
This function gets called once just before drawing each frame, and it's sole purpose in life
is to check to see if any of the video mode parameters have changed, and if they have to
update the rendering DLL and/or video mode to match.
============
*/
void VID_CheckChanges (void)
{
char name[100];
cvar_t *sw_mode;
if ( vid_ref->modified )
{
S_StopAllSounds();
}
while (vid_ref->modified)
{
/*
** refresh has changed
*/
vid_ref->modified = false;
vid_fullscreen->modified = true;
cl.refresh_prepped = false;
cls.disable_screen = true;
sprintf( name, "ref_%s.so", vid_ref->string );
if ( !VID_LoadRefresh( name ) )
{
if ( strcmp (vid_ref->string, "soft") == 0 ||
strcmp (vid_ref->string, "softx") == 0 ) {
Com_Printf("Refresh failed\n");
sw_mode = Cvar_Get( "sw_mode", "0", 0 );
if (sw_mode->value != 0) {
Com_Printf("Trying mode 0\n");
Cvar_SetValue("sw_mode", 0);
if ( !VID_LoadRefresh( name ) )
Com_Error (ERR_FATAL, "Couldn't fall back to software refresh!");
} else
Com_Error (ERR_FATAL, "Couldn't fall back to software refresh!");
}
/* prefer to fall back on X if active */
if (getenv("DISPLAY"))
Cvar_Set( "vid_ref", "softx" );
else
Cvar_Set( "vid_ref", "soft" );
/*
** drop the console if we fail to load a refresh
*/
if ( cls.key_dest != key_console )
{
Con_ToggleConsole_f();
}
}
cls.disable_screen = false;
}
}
/*
============
VID_Init
============
*/
void VID_Init (void)
{
/* Create the video variables so we know how to start the graphics drivers */
// if DISPLAY is defined, try X
if (getenv("DISPLAY"))
vid_ref = Cvar_Get ("vid_ref", "softx", CVAR_ARCHIVE);
else
vid_ref = Cvar_Get ("vid_ref", "soft", CVAR_ARCHIVE);
vid_xpos = Cvar_Get ("vid_xpos", "3", CVAR_ARCHIVE);
vid_ypos = Cvar_Get ("vid_ypos", "22", CVAR_ARCHIVE);
vid_fullscreen = Cvar_Get ("vid_fullscreen", "0", CVAR_ARCHIVE);
vid_gamma = Cvar_Get( "vid_gamma", "1", CVAR_ARCHIVE );
/* Add some console commands that we want to handle */
Cmd_AddCommand ("vid_restart", VID_Restart_f);
/* Disable the 3Dfx splash screen */
putenv("FX_GLIDE_NO_SPLASH=0");
/* Start the graphics mode and load refresh DLL */
VID_CheckChanges();
}
/*
============
VID_Shutdown
============
*/
void VID_Shutdown (void)
{
if ( reflib_active )
{
if (KBD_Close_fp)
KBD_Close_fp();
if (RW_IN_Shutdown_fp)
RW_IN_Shutdown_fp();
KBD_Close_fp = NULL;
RW_IN_Shutdown_fp = NULL;
re.Shutdown ();
VID_FreeReflib ();
}
VID_MenuShutdown();
}
/*
============
VID_CheckRefExists
Checks to see if the given ref_NAME.so exists.
Placed here to avoid complicating other code if the library .so files
ever have their names changed.
============
*/
qboolean VID_CheckRefExists (const char *ref)
{
char fn[MAX_OSPATH];
char *path;
struct stat st;
path = Cvar_Get ("basedir", ".", CVAR_NOSET)->string;
snprintf (fn, MAX_OSPATH, "%s/ref_%s.so", path, ref );
if (stat(fn, &st) == 0)
return true;
else
return false;
}
/*****************************************************************************/
/* INPUT */
/*****************************************************************************/
cvar_t *in_joystick;
// This is fake, it's acutally done by the Refresh load
void IN_Init (void)
{
in_joystick = Cvar_Get ("in_joystick", "0", CVAR_ARCHIVE);
}
void Real_IN_Init (void)
{
if (RW_IN_Init_fp)
RW_IN_Init_fp(&in_state);
}
void IN_Shutdown (void)
{
if (RW_IN_Shutdown_fp)
RW_IN_Shutdown_fp();
}
void IN_Commands (void)
{
if (RW_IN_Commands_fp)
RW_IN_Commands_fp();
}
void IN_Move (usercmd_t *cmd)
{
if (RW_IN_Move_fp)
RW_IN_Move_fp(cmd);
}
void IN_Frame (void)
{
if (RW_IN_Activate_fp)
{
if ( !cl.refresh_prepped || cls.key_dest == key_console || cls.key_dest == key_menu)
RW_IN_Activate_fp(false);
else
RW_IN_Activate_fp(true);
}
if (RW_IN_Frame_fp)
RW_IN_Frame_fp();
}
void IN_Activate (qboolean active)
{
}
void Do_Key_Event(int key, qboolean down)
{
Key_Event(key, down, Sys_Milliseconds());
}
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