1 /* DirectDraw using DGA
3 * Copyright 1997-2000 Marcus Meissner
4 * Copyright 1998-2000 Lionel Ulmer (most of Direct3D stuff)
7 * When DirectVideo mode is enabled you can no longer use 'normal' X
8 * applications nor can you switch to a virtual console. Also, enabling
9 * only works, if you have switched to the screen where the application
11 * Some ways to debug this stuff are:
12 * - A terminal connected to the serial port. Can be bought used for cheap.
13 * (This is the method I am using.)
14 * - Another machine connected over some kind of network.
22 #ifdef HAVE_SYS_SIGNAL_H
23 # include <sys/signal.h>
33 #include "wine/exception.h"
36 #include "debugtools.h"
42 #include "dga_private.h"
44 #define RESTORE__SIGNALS
46 DEFAULT_DEBUG_CHANNEL(ddraw
);
48 #ifdef HAVE_LIBXXF86VM
49 XF86VidModeModeInfo
*orig_mode
= NULL
;
52 static inline BOOL
get_option( const char *name
, BOOL def
) {
53 return PROFILE_GetWineIniBool( "x11drv", name
, def
);
57 DDRAW_DGA_Available(void)
59 int fd
, evbase
, evret
, majver
, minver
;
60 static BYTE return_value
= 0xFF;
62 /* This prevents from probing X times for DGA */
63 if (return_value
!= 0xFF)
66 if (!get_option( "UseDGA", 1 )) {
67 TRACE("UseDGA disabled.\n");
72 /* First, query the extenstion and its version */
73 if (!TSXF86DGAQueryExtension(display
,&evbase
,&evret
)) {
74 TRACE("DGA extension not detected.\n");
79 if (!TSXF86DGAQueryVersion(display
,&majver
,&minver
)) {
80 TRACE("DGA version not detected.\n");
85 /* You don't have to be root to use DGA extensions. Simply having access
86 * to /dev/mem will do the trick
87 * This can be achieved by adding the user to the "kmem" group on
88 * Debian 2.x systems, don't know about
91 if ((fd
= open("/dev/mem", O_RDWR
)) != -1)
97 TRACE("You have no access to /dev/mem\n");
104 DGA_Create( LPDIRECTDRAW
*lplpDD
) {
105 IDirectDrawImpl
* ddraw
;
106 dga_dd_private
* dgpriv
;
107 int memsize
,banksize
,major
,minor
,flags
;
113 /* Get DGA availability / version */
114 dga_version
= DDRAW_DGA_Available();
115 if (dga_version
== 0)
116 return DDERR_GENERIC
;
118 /* If we were just testing ... return OK */
122 ddraw
= (IDirectDrawImpl
*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY
,sizeof(IDirectDrawImpl
));
123 *lplpDD
= (LPDIRECTDRAW
)ddraw
;
125 ICOM_VTBL(ddraw
) = &dga_ddvt
;
127 ddraw
->private = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY
,sizeof(dga_dd_private
));
129 dgpriv
= (dga_dd_private
*)ddraw
->private;
131 TSXF86DGAQueryVersion(display
,&major
,&minor
);
132 TRACE("XF86DGA is version %d.%d\n",major
,minor
);
134 TSXF86DGAQueryDirectVideo(display
,DefaultScreen(display
),&flags
);
135 if (!(flags
& XF86DGADirectPresent
))
136 MESSAGE("direct video is NOT PRESENT.\n");
137 TSXF86DGAGetVideo(display
,DefaultScreen(display
),&addr
,&width
,&banksize
,&memsize
);
138 dgpriv
->fb_width
= width
;
139 TSXF86DGAGetViewPortSize(display
,DefaultScreen(display
),&width
,&height
);
140 TSXF86DGASetViewPort(display
,DefaultScreen(display
),0,0);
141 dgpriv
->fb_height
= height
;
142 TRACE("video framebuffer: begin %p, width %d,banksize %d,memsize %d\n",
143 addr
,width
,banksize
,memsize
145 TRACE("viewport height: %d\n",height
);
146 /* Get the screen dimensions as seen by Wine.
147 * In that case, it may be better to ignore the -desktop mode and
148 * return the real screen size => print a warning
150 ddraw
->d
.height
= MONITOR_GetHeight(&MONITOR_PrimaryMonitor
);
151 ddraw
->d
.width
= MONITOR_GetWidth(&MONITOR_PrimaryMonitor
);
152 if ((ddraw
->d
.height
!= height
) || (ddraw
->d
.width
!= width
))
153 WARN("You seem to be running in -desktop mode. This may prove dangerous in DGA mode...\n");
154 dgpriv
->fb_addr
= addr
;
155 dgpriv
->fb_memsize
= memsize
;
158 /* The cast is because DGA2's install colormap does not return a value whereas
160 dgpriv
->InstallColormap
= (void (*)(Display
*, int, Colormap
)) TSXF86DGAInstallColormap
;
162 /* just assume the default depth is the DGA depth too */
163 depth
= DefaultDepthOfScreen(X11DRV_GetXScreen());
165 _common_depth_to_pixelformat(depth
, &(ddraw
->d
.directdraw_pixelformat
), &(ddraw
->d
.screen_pixelformat
), NULL
);
167 #ifdef RESTORE_SIGNALS
174 /* Where do these GUIDs come from? mkuuid.
175 * They exist solely to distinguish between the targets Wine support,
176 * and should be different than any other GUIDs in existence.
178 static GUID DGA_DirectDraw_GUID
= { /* e2dcb020-dc60-11d1-8407-9714f5d50802 */
182 {0x84, 0x07, 0x97, 0x14, 0xf5, 0xd5, 0x08, 0x02}
185 ddraw_driver dga_driver
= {
186 &DGA_DirectDraw_GUID
,
188 "WINE XF86DGA DirectDraw Driver",
193 DECL_GLOBAL_CONSTRUCTOR(DGA_register
) { ddraw_register_driver(&dga_driver
); }