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vid_win.c
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/*
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.
*/
// vid_win.c -- Win32 video driver
#include "quakedef.h"
#include "winquake.h"
#include "d_local.h"
#include "resource.h"
#define MAX_MODE_LIST 30
#define VID_ROW_SIZE 3
qboolean dibonly;
extern int Minimized;
HWND mainwindow;
HWND WINAPI InitializeWindow (HINSTANCE hInstance, int nCmdShow);
int DIBWidth, DIBHeight;
qboolean DDActive;
RECT WindowRect;
DWORD WindowStyle, ExWindowStyle;
int window_center_x, window_center_y, window_x, window_y, window_width, window_height;
RECT window_rect;
static DEVMODE gdevmode;
static qboolean startwindowed = 0, windowed_mode_set;
static int firstupdate = 1;
static qboolean vid_initialized = false, vid_palettized;
static int lockcount;
static int vid_fulldib_on_focus_mode;
static qboolean force_minimized, in_mode_set, is_mode0x13, force_mode_set;
static int vid_stretched, windowed_mouse;
static qboolean palette_changed, syscolchg, vid_mode_set, hide_window, pal_is_nostatic;
static HICON hIcon;
viddef_t vid; // global video state
#define MODE_WINDOWED 0
#define MODE_SETTABLE_WINDOW 2
#define NO_MODE (MODE_WINDOWED - 1)
#define MODE_FULLSCREEN_DEFAULT (MODE_WINDOWED + 3)
// Note that 0 is MODE_WINDOWED
cvar_t vid_mode = {"vid_mode","0", false};
// Note that 0 is MODE_WINDOWED
cvar_t _vid_default_mode = {"_vid_default_mode","0", true};
// Note that 3 is MODE_FULLSCREEN_DEFAULT
cvar_t _vid_default_mode_win = {"_vid_default_mode_win","3", true};
cvar_t vid_wait = {"vid_wait","0"};
cvar_t vid_nopageflip = {"vid_nopageflip","0", true};
cvar_t _vid_wait_override = {"_vid_wait_override", "0", true};
cvar_t vid_config_x = {"vid_config_x","800", true};
cvar_t vid_config_y = {"vid_config_y","600", true};
cvar_t vid_stretch_by_2 = {"vid_stretch_by_2","1", true};
cvar_t _windowed_mouse = {"_windowed_mouse","0", true};
cvar_t vid_fullscreen_mode = {"vid_fullscreen_mode","3", true};
cvar_t vid_windowed_mode = {"vid_windowed_mode","0", true};
cvar_t block_switch = {"block_switch","0", true};
cvar_t vid_window_x = {"vid_window_x", "0", true};
cvar_t vid_window_y = {"vid_window_y", "0", true};
typedef struct {
int width;
int height;
} lmode_t;
lmode_t lowresmodes[] = {
{320, 200},
{320, 240},
{400, 300},
{512, 384},
};
int vid_modenum = NO_MODE;
int vid_testingmode, vid_realmode;
double vid_testendtime;
int vid_default = MODE_WINDOWED;
static int windowed_default;
modestate_t modestate = MS_UNINIT;
static byte *vid_surfcache;
static int vid_surfcachesize;
static int VID_highhunkmark;
unsigned char vid_curpal[256*3];
unsigned short d_8to16table[256];
unsigned d_8to24table[256];
int driver = grDETECT,mode;
bool useWinDirect = true, useDirectDraw = true;
MGLDC *mgldc = NULL,*memdc = NULL,*dibdc = NULL,*windc = NULL;
typedef struct {
modestate_t type;
int width;
int height;
int modenum;
int mode13;
int stretched;
int dib;
int fullscreen;
int bpp;
int halfscreen;
char modedesc[13];
} vmode_t;
static vmode_t modelist[MAX_MODE_LIST];
static int nummodes;
static vmode_t *pcurrentmode;
int aPage; // Current active display page
int vPage; // Current visible display page
int waitVRT = true; // True to wait for retrace on flip
static vmode_t badmode;
static byte backingbuf[48*24];
void VID_MenuDraw (void);
void VID_MenuKey (int key);
LONG WINAPI MainWndProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
void AppActivate(BOOL fActive, BOOL minimize);
/*
================
VID_RememberWindowPos
================
*/
void VID_RememberWindowPos (void)
{
RECT rect;
if (GetWindowRect (mainwindow, &rect))
{
if ((rect.left < GetSystemMetrics (SM_CXSCREEN)) &&
(rect.top < GetSystemMetrics (SM_CYSCREEN)) &&
(rect.right > 0) &&
(rect.bottom > 0))
{
Cvar_SetValue ("vid_window_x", (float)rect.left);
Cvar_SetValue ("vid_window_y", (float)rect.top);
}
}
}
/*
================
VID_CheckWindowXY
================
*/
void VID_CheckWindowXY (void)
{
if (((int)vid_window_x.value > (GetSystemMetrics (SM_CXSCREEN) - 160)) ||
((int)vid_window_y.value > (GetSystemMetrics (SM_CYSCREEN) - 120)) ||
((int)vid_window_x.value < 0) ||
((int)vid_window_y.value < 0))
{
Cvar_SetValue ("vid_window_x", 0.0);
Cvar_SetValue ("vid_window_y", 0.0 );
}
}
/*
================
VID_UpdateWindowStatus
================
*/
void VID_UpdateWindowStatus (void)
{
window_rect.left = window_x;
window_rect.top = window_y;
window_rect.right = window_x + window_width;
window_rect.bottom = window_y + window_height;
window_center_x = (window_rect.left + window_rect.right) / 2;
window_center_y = (window_rect.top + window_rect.bottom) / 2;
IN_UpdateClipCursor ();
}
/*
================
ClearAllStates
================
*/
void ClearAllStates (void)
{
int i;
// send an up event for each key, to make sure the server clears them all
for (i=0 ; i<256 ; i++)
{
Key_Event (i, false);
}
Key_ClearStates ();
IN_ClearStates ();
}
/*
================
VID_CheckAdequateMem
================
*/
qboolean VID_CheckAdequateMem (int width, int height)
{
int tbuffersize;
tbuffersize = width * height * sizeof (*d_pzbuffer);
tbuffersize += D_SurfaceCacheForRes (width, height);
// see if there's enough memory, allowing for the normal mode 0x13 pixel,
// z, and surface buffers
if ((host_parms.memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
0x10000 * 3) < minimum_memory)
{
return false; // not enough memory for mode
}
return true;
}
/*
================
VID_AllocBuffers
================
*/
qboolean VID_AllocBuffers (int width, int height)
{
int tsize, tbuffersize;
tbuffersize = width * height * sizeof (*d_pzbuffer);
tsize = D_SurfaceCacheForRes (width, height);
tbuffersize += tsize;
// see if there's enough memory, allowing for the normal mode 0x13 pixel,
// z, and surface buffers
if ((host_parms.memsize - tbuffersize + SURFCACHE_SIZE_AT_320X200 +
0x10000 * 3) < minimum_memory)
{
Con_SafePrintf ("Not enough memory for video mode\n");
return false; // not enough memory for mode
}
vid_surfcachesize = tsize;
if (d_pzbuffer)
{
D_FlushCaches ();
Hunk_FreeToHighMark (VID_highhunkmark);
d_pzbuffer = NULL;
}
VID_highhunkmark = Hunk_HighMark ();
d_pzbuffer = Hunk_HighAllocName (tbuffersize, "video");
vid_surfcache = (byte *)d_pzbuffer +
width * height * sizeof (*d_pzbuffer);
return true;
}
void initFatalError(void)
{
MGL_exit();
MGL_fatalError(MGL_errorMsg(MGL_result()));
exit(EXIT_FAILURE);
}
int VID_Suspend (MGLDC *dc,m_int flags)
{
if (flags & MGL_DEACTIVATE)
{
// FIXME: this doesn't currently work on NT
if (block_switch.value && !WinNT)
{
return MGL_NO_DEACTIVATE;
}
S_BlockSound ();
S_ClearBuffer ();
IN_RestoreOriginalMouseState ();
CDAudio_Pause ();
// keep WM_PAINT from trying to redraw
in_mode_set = true;
block_drawing = true; // so we don't try to draw while switched away
return MGL_NO_SUSPEND_APP;
}
else if (flags & MGL_REACTIVATE)
{
IN_SetQuakeMouseState ();
// fix the leftover Alt from any Alt-Tab or the like that switched us away
ClearAllStates ();
CDAudio_Resume ();
S_UnblockSound ();
in_mode_set = false;
vid.recalc_refdef = 1;
block_drawing = false;
return MGL_NO_SUSPEND_APP;
}
}
void registerAllDispDrivers(void)
{
/* Event though these driver require WinDirect, we register
* them so that they will still be available even if DirectDraw
* is present and the user has disable the high performance
* WinDirect modes.
*/
MGL_registerDriver(MGL_VGA8NAME,VGA8_driver);
// MGL_registerDriver(MGL_VGAXNAME,VGAX_driver);
/* Register display drivers */
if (useWinDirect)
{
//we don't want VESA 1.X drivers MGL_registerDriver(MGL_SVGA8NAME,SVGA8_driver);
MGL_registerDriver(MGL_LINEAR8NAME,LINEAR8_driver);
if (!COM_CheckParm ("-novbeaf"))
MGL_registerDriver(MGL_ACCEL8NAME,ACCEL8_driver);
}
if (useDirectDraw)
{
MGL_registerDriver(MGL_DDRAW8NAME,DDRAW8_driver);
}
}
void registerAllMemDrivers(void)
{
/* Register memory context drivers */
MGL_registerDriver(MGL_PACKED8NAME,PACKED8_driver);
}
void VID_InitMGLFull (HINSTANCE hInstance)
{
int i, xRes, yRes, bits, vMode, lowres, curmode, temp;
int lowstretchedres, stretchedmode, lowstretched;
uchar *m;
// FIXME: NT is checked for because MGL currently has a bug that causes it
// to try to use WinDirect modes even on NT
if (COM_CheckParm("-nowindirect") ||
COM_CheckParm("-nowd") ||
COM_CheckParm("-novesa") ||
WinNT)
{
useWinDirect = false;
}
if (COM_CheckParm("-nodirectdraw") || COM_CheckParm("-noddraw") || COM_CheckParm("-nodd"))
useDirectDraw = false;
// Initialise the MGL
MGL_unregisterAllDrivers();
registerAllDispDrivers();
registerAllMemDrivers();
MGL_detectGraph(&driver,&mode);
m = MGL_availableModes();
if (m[0] != 0xFF)
{
lowres = lowstretchedres = 99999;
lowstretched = 0;
curmode = 0;
// find the lowest-res mode, or a mode we can stretch up to and get
// lowest-res that way
for (i = 0; m[i] != 0xFF; i++)
{
MGL_modeResolution(m[i], &xRes, &yRes,&bits);
if ((bits == 8) &&
(xRes <= MAXWIDTH) &&
(yRes <= MAXHEIGHT) &&
(curmode < MAX_MODE_LIST))
{
if (m[i] == grVGA_320x200x256)
is_mode0x13 = true;
if (!COM_CheckParm("-noforcevga"))
{
if (m[i] == grVGA_320x200x256)
{
mode = i;
break;
}
}
if (xRes < lowres)
{
lowres = xRes;
mode = i;
}
if ((xRes < lowstretchedres) && ((xRes >> 1) >= 320))
{
lowstretchedres = xRes >> 1;
stretchedmode = i;
}
}
curmode++;
}
// if there's a mode we can stretch by 2 up to, thereby effectively getting
// a lower-res mode than the lowest-res real but still at least 320x200, that
// will be our default mode
if (lowstretchedres < lowres)
{
mode = stretchedmode;
lowres = lowstretchedres;
lowstretched = 1;
}
// build the mode list, leaving room for the low-res stretched mode, if any
nummodes++; // leave room for default mode
for (i = 0; m[i] != 0xFF; i++)
{
MGL_modeResolution(m[i], &xRes, &yRes,&bits);
if ((bits == 8) &&
(xRes <= MAXWIDTH) &&
(yRes <= MAXHEIGHT) &&
(nummodes < MAX_MODE_LIST))
{
if (i == mode)
{
if (lowstretched)
{
stretchedmode = nummodes;
curmode = nummodes++;
}
else
{
curmode = MODE_FULLSCREEN_DEFAULT;
}
}
else
{
curmode = nummodes++;
}
modelist[curmode].type = MS_FULLSCREEN;
modelist[curmode].width = xRes;
modelist[curmode].height = yRes;
sprintf (modelist[curmode].modedesc, "%dx%d", xRes, yRes);
if (m[i] == grVGA_320x200x256)
modelist[curmode].mode13 = 1;
else
modelist[curmode].mode13 = 0;
modelist[curmode].modenum = m[i];
modelist[curmode].stretched = 0;
modelist[curmode].dib = 0;
modelist[curmode].fullscreen = 1;
modelist[curmode].halfscreen = 0;
modelist[curmode].bpp = 8;
}
}
if (lowstretched)
{
modelist[MODE_FULLSCREEN_DEFAULT] = modelist[stretchedmode];
modelist[MODE_FULLSCREEN_DEFAULT].stretched = 1;
modelist[MODE_FULLSCREEN_DEFAULT].width >>= 1;
modelist[MODE_FULLSCREEN_DEFAULT].height >>= 1;
sprintf (modelist[MODE_FULLSCREEN_DEFAULT].modedesc, "%dx%d",
modelist[MODE_FULLSCREEN_DEFAULT].width,
modelist[MODE_FULLSCREEN_DEFAULT].height);
}
vid_default = MODE_FULLSCREEN_DEFAULT;
temp = m[0];
if (!MGL_init(&driver, &temp, ""))
{
initFatalError();
}
}
MGL_setSuspendAppCallback(VID_Suspend);
}
MGLDC *createDisplayDC(int forcemem)
/****************************************************************************
*
* Function: createDisplayDC
* Returns: Pointer to the MGL device context to use for the application
*
* Description: Initialises the MGL and creates an appropriate display
* device context to be used by the GUI. This creates and
* apropriate device context depending on the system being
* compile for, and should be the only place where system
* specific code is required.
*
****************************************************************************/
{
MGLDC *dc;
pixel_format_t pf;
int npages;
// Start the specified video mode
if (!MGL_changeDisplayMode(mode))
initFatalError();
npages = MGL_availablePages(mode);
if (npages > 3)
npages = 3;
if (!COM_CheckParm ("-notriplebuf"))
{
if (npages > 2)
{
npages = 2;
}
}
if ((dc = MGL_createDisplayDC(npages)) == NULL)
return NULL;
if (!forcemem && (MGL_surfaceAccessType(dc)) == MGL_LINEAR_ACCESS && (dc->mi.maxPage > 0))
{
MGL_makeCurrentDC(dc);
memdc = NULL;
}
else
{
// Set up for blitting from a memory buffer
memdc = MGL_createMemoryDC(MGL_sizex(dc)+1,MGL_sizey(dc)+1,8,&pf);
MGL_makeCurrentDC(memdc);
}
// Enable page flipping even for even for blitted surfaces
if (forcemem)
{
vid.numpages = 1;
}
else
{
vid.numpages = dc->mi.maxPage + 1;
if (vid.numpages > 1)
{
// Set up for page flipping
MGL_setActivePage(dc, aPage = 1);
MGL_setVisualPage(dc, vPage = 0, false);
}
if (vid.numpages > 3)
vid.numpages = 3;
}
if (vid.numpages == 2)
waitVRT = true;
else
waitVRT = false;
return dc;
}
void VID_InitMGLDIB (HINSTANCE hInstance)
{
WNDCLASS wc;
HDC hdc;
int i;
hIcon = LoadIcon (hInstance, MAKEINTRESOURCE (IDI_ICON2));
/* Register the frame class */
wc.style = 0;
wc.lpfnWndProc = (WNDPROC)MainWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = 0;
wc.hCursor = LoadCursor (NULL,IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = 0;
wc.lpszClassName = "WinQuake";
if (!RegisterClass (&wc) )
Sys_Error ("Couldn't register window class");
/* Find the size for the DIB window */
/* Initialise the MGL for windowed operation */
MGL_setAppInstance(hInstance);
registerAllMemDrivers();
MGL_initWindowed("");
modelist[0].type = MS_WINDOWED;
modelist[0].width = 320;
modelist[0].height = 240;
strcpy (modelist[0].modedesc, "320x240");
modelist[0].mode13 = 0;
modelist[0].modenum = MODE_WINDOWED;
modelist[0].stretched = 0;
modelist[0].dib = 1;
modelist[0].fullscreen = 0;
modelist[0].halfscreen = 0;
modelist[0].bpp = 8;
modelist[1].type = MS_WINDOWED;
modelist[1].width = 640;
modelist[1].height = 480;
strcpy (modelist[1].modedesc, "640x480");
modelist[1].mode13 = 0;
modelist[1].modenum = MODE_WINDOWED + 1;
modelist[1].stretched = 1;
modelist[1].dib = 1;
modelist[1].fullscreen = 0;
modelist[1].halfscreen = 0;
modelist[1].bpp = 8;
modelist[2].type = MS_WINDOWED;
modelist[2].width = 800;
modelist[2].height = 600;
strcpy (modelist[2].modedesc, "800x600");
modelist[2].mode13 = 0;
modelist[2].modenum = MODE_WINDOWED + 2;
modelist[2].stretched = 1;
modelist[2].dib = 1;
modelist[2].fullscreen = 0;
modelist[2].halfscreen = 0;
modelist[2].bpp = 8;
// automatically stretch the default mode up if > 640x480 desktop resolution
hdc = GetDC(NULL);
if ((GetDeviceCaps(hdc, HORZRES) > 640) && !COM_CheckParm("-noautostretch"))
{
vid_default = MODE_WINDOWED + 1;
}
else
{
vid_default = MODE_WINDOWED;
}
windowed_default = vid_default;
ReleaseDC(NULL,hdc);
nummodes = 3; // reserve space for windowed mode
DDActive = 0;
}
/*
=================
VID_InitFullDIB
=================
*/
void VID_InitFullDIB (HINSTANCE hInstance)
{
DEVMODE devmode;
int i, j, modenum, cmodes, existingmode, originalnummodes, lowestres;
int numlowresmodes, bpp, done;
int cstretch, istretch, mstretch;
BOOL stat;
// enumerate 8 bpp modes
originalnummodes = nummodes;
modenum = 0;
lowestres = 99999;
do
{
stat = EnumDisplaySettings (NULL, modenum, &devmode);
if ((devmode.dmBitsPerPel == 8) &&
(devmode.dmPelsWidth <= MAXWIDTH) &&
(devmode.dmPelsHeight <= MAXHEIGHT) &&
(nummodes < MAX_MODE_LIST))
{
devmode.dmFields = DM_BITSPERPEL |
DM_PELSWIDTH |
DM_PELSHEIGHT;
if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
DISP_CHANGE_SUCCESSFUL)
{
modelist[nummodes].type = MS_FULLDIB;
modelist[nummodes].width = devmode.dmPelsWidth;
modelist[nummodes].height = devmode.dmPelsHeight;
modelist[nummodes].modenum = 0;
modelist[nummodes].mode13 = 0;
modelist[nummodes].stretched = 0;
modelist[nummodes].halfscreen = 0;
modelist[nummodes].dib = 1;
modelist[nummodes].fullscreen = 1;
modelist[nummodes].bpp = devmode.dmBitsPerPel;
sprintf (modelist[nummodes].modedesc, "%dx%d",
devmode.dmPelsWidth, devmode.dmPelsHeight);
// if the width is more than twice the height, reduce it by half because this
// is probably a dual-screen monitor
if (!COM_CheckParm("-noadjustaspect"))
{
if (modelist[nummodes].width > (modelist[nummodes].height << 1))
{
modelist[nummodes].width >>= 1;
modelist[nummodes].halfscreen = 1;
sprintf (modelist[nummodes].modedesc, "%dx%d",
modelist[nummodes].width,
modelist[nummodes].height);
}
}
for (i=originalnummodes, existingmode = 0 ; i<nummodes ; i++)
{
if ((modelist[nummodes].width == modelist[i].width) &&
(modelist[nummodes].height == modelist[i].height))
{
existingmode = 1;
break;
}
}
if (!existingmode)
{
if (modelist[nummodes].width < lowestres)
lowestres = modelist[nummodes].width;
nummodes++;
}
}
}
modenum++;
} while (stat);
// see if any of them were actually settable; if so, this is our mode list,
// else enumerate all modes; our mode list is whichever ones are settable
// with > 8 bpp
if (nummodes == originalnummodes)
{
modenum = 0;
lowestres = 99999;
Con_SafePrintf ("No 8-bpp fullscreen DIB modes found\n");
do
{
stat = EnumDisplaySettings (NULL, modenum, &devmode);
if ((((devmode.dmPelsWidth <= MAXWIDTH) &&
(devmode.dmPelsHeight <= MAXHEIGHT)) ||
(!COM_CheckParm("-noadjustaspect") &&
(devmode.dmPelsWidth <= (MAXWIDTH*2)) &&
(devmode.dmPelsWidth > (devmode.dmPelsHeight*2)))) &&
(nummodes < MAX_MODE_LIST) &&
(devmode.dmBitsPerPel > 8))
{
devmode.dmFields = DM_BITSPERPEL |
DM_PELSWIDTH |
DM_PELSHEIGHT;
if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
DISP_CHANGE_SUCCESSFUL)
{
modelist[nummodes].type = MS_FULLDIB;
modelist[nummodes].width = devmode.dmPelsWidth;
modelist[nummodes].height = devmode.dmPelsHeight;
modelist[nummodes].modenum = 0;
modelist[nummodes].mode13 = 0;
modelist[nummodes].stretched = 0;
modelist[nummodes].halfscreen = 0;
modelist[nummodes].dib = 1;
modelist[nummodes].fullscreen = 1;
modelist[nummodes].bpp = devmode.dmBitsPerPel;
sprintf (modelist[nummodes].modedesc, "%dx%d",
devmode.dmPelsWidth, devmode.dmPelsHeight);
// if the width is more than twice the height, reduce it by half because this
// is probably a dual-screen monitor
if (!COM_CheckParm("-noadjustaspect"))
{
if (modelist[nummodes].width > (modelist[nummodes].height*2))
{
modelist[nummodes].width >>= 1;
modelist[nummodes].halfscreen = 1;
sprintf (modelist[nummodes].modedesc, "%dx%d",
modelist[nummodes].width,
modelist[nummodes].height);
}
}
for (i=originalnummodes, existingmode = 0 ; i<nummodes ; i++)
{
if ((modelist[nummodes].width == modelist[i].width) &&
(modelist[nummodes].height == modelist[i].height))
{
// pick the lowest available bpp
if (modelist[nummodes].bpp < modelist[i].bpp)
modelist[i] = modelist[nummodes];
existingmode = 1;
break;
}
}
if (!existingmode)
{
if (modelist[nummodes].width < lowestres)
lowestres = modelist[nummodes].width;
nummodes++;
}
}
}
modenum++;
} while (stat);
}
// see if there are any low-res modes that aren't being reported
numlowresmodes = sizeof(lowresmodes) / sizeof(lowresmodes[0]);
bpp = 8;
done = 0;
// first make sure the driver doesn't just answer yes to all tests
devmode.dmBitsPerPel = 8;
devmode.dmPelsWidth = 42;
devmode.dmPelsHeight = 37;
devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
DISP_CHANGE_SUCCESSFUL)
{
done = 1;
}
while (!done)
{
for (j=0 ; (j<numlowresmodes) && (nummodes < MAX_MODE_LIST) ; j++)
{
devmode.dmBitsPerPel = bpp;
devmode.dmPelsWidth = lowresmodes[j].width;
devmode.dmPelsHeight = lowresmodes[j].height;
devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
if (ChangeDisplaySettings (&devmode, CDS_TEST | CDS_FULLSCREEN) ==
DISP_CHANGE_SUCCESSFUL)
{
modelist[nummodes].type = MS_FULLDIB;
modelist[nummodes].width = devmode.dmPelsWidth;
modelist[nummodes].height = devmode.dmPelsHeight;
modelist[nummodes].modenum = 0;
modelist[nummodes].mode13 = 0;
modelist[nummodes].stretched = 0;
modelist[nummodes].halfscreen = 0;
modelist[nummodes].dib = 1;
modelist[nummodes].fullscreen = 1;
modelist[nummodes].bpp = devmode.dmBitsPerPel;
sprintf (modelist[nummodes].modedesc, "%dx%d",
devmode.dmPelsWidth, devmode.dmPelsHeight);
// we only want the lowest-bpp version of each mode
for (i=originalnummodes, existingmode = 0 ; i<nummodes ; i++)
{
if ((modelist[nummodes].width == modelist[i].width) &&
(modelist[nummodes].height == modelist[i].height) &&
(modelist[nummodes].bpp >= modelist[i].bpp))
{
existingmode = 1;
break;
}
}
if (!existingmode)
{
if (modelist[nummodes].width < lowestres)
lowestres = modelist[nummodes].width;
nummodes++;
}
}
}
switch (bpp)
{
case 8:
bpp = 16;
break;
case 16:
bpp = 32;
break;
case 32:
done = 1;
break;
}
}
// now add the lowest stretch-by-2 pseudo-modes between 320-wide
// (inclusive) and lowest real res (not inclusive)
// don't bother if we have a real VGA mode 0x13 mode
if (!is_mode0x13)
{
for (i=originalnummodes, cstretch=0 ; i<nummodes ; i++)
{
if (((modelist[i].width >> 1) < lowestres) &&
((modelist[i].width >> 1) >= 320))
{
lowestres = modelist[i].width >> 1;
cstretch = 1;
mstretch = i;
}
}
if ((nummodes + cstretch) > MAX_MODE_LIST)
cstretch = MAX_MODE_LIST - nummodes;
if (cstretch > 0)
{
for (i=(nummodes-1) ; i>=originalnummodes ; i--)
modelist[i+cstretch] = modelist[i];
nummodes += cstretch;
istretch = originalnummodes;
modelist[istretch] = modelist[mstretch];
modelist[istretch].width >>= 1;
modelist[istretch].height >>= 1;
modelist[istretch].stretched = 1;
sprintf (modelist[istretch].modedesc, "%dx%d",
modelist[istretch].width, modelist[istretch].height);
}
}
if (nummodes != originalnummodes)
vid_default = MODE_FULLSCREEN_DEFAULT;
else
Con_SafePrintf ("No fullscreen DIB modes found\n");
}
/*
=================
VID_NumModes
=================
*/