/**********************************************************************
* DRIVER_load_driver
*/
const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
{
HMODULE module;
struct graphics_driver *driver;
static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
EnterCriticalSection( &driver_section );
/* display driver is a special case */
if (!strcmpiW( name, displayW ) ||
!strcmpiW( name, display1W ))
{
driver = load_display_driver();
LeaveCriticalSection( &driver_section );
return &driver->funcs;
}
if ((module = GetModuleHandleW( name )))
{
for (driver = first_driver; driver; driver = driver->next)
{
if (driver->module == module)
{
driver->count++;
LeaveCriticalSection( &driver_section );
return &driver->funcs;
}
}
}
if (!(module = LoadLibraryW( name )))
{
LeaveCriticalSection( &driver_section );
return NULL;
}
if (!(driver = create_driver( module )))
{
FreeLibrary( module );
LeaveCriticalSection( &driver_section );
return NULL;
}
TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
LeaveCriticalSection( &driver_section );
return &driver->funcs;
}
/**********************************************************************
* DRIVER_load_driver
*/
const DC_FUNCTIONS *DRIVER_load_driver( LPCWSTR name )
{
HMODULE module;
struct graphics_driver *driver, *new_driver;
static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
static const WCHAR display1W[] = {'\\','\\','.','\\','D','I','S','P','L','A','Y','1',0};
/* display driver is a special case */
if (!strcmpiW( name, displayW ) || !strcmpiW( name, display1W )) return DRIVER_get_display_driver();
if ((module = GetModuleHandleW( name )))
{
if (display_driver && display_driver->module == module) return &display_driver->funcs;
EnterCriticalSection( &driver_section );
LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
{
if (driver->module == module) goto done;
}
LeaveCriticalSection( &driver_section );
}
if (!(module = LoadLibraryW( name ))) return NULL;
if (!(new_driver = create_driver( module )))
{
FreeLibrary( module );
return NULL;
}
/* check if someone else added it in the meantime */
EnterCriticalSection( &driver_section );
LIST_FOR_EACH_ENTRY( driver, &drivers, struct graphics_driver, entry )
{
if (driver->module != module) continue;
FreeLibrary( module );
HeapFree( GetProcessHeap(), 0, new_driver );
goto done;
}
driver = new_driver;
list_add_head( &drivers, &driver->entry );
TRACE( "loaded driver %p for %s\n", driver, debugstr_w(name) );
done:
LeaveCriticalSection( &driver_section );
return &driver->funcs;
}
/**********************************************************************
* DRIVER_get_display_driver
*
* Special case for loading the display driver: get the name from the config file
*/
const DC_FUNCTIONS *DRIVER_get_display_driver(void)
{
struct graphics_driver *driver;
char buffer[MAX_PATH], libname[32], *name, *next;
HMODULE module = 0;
HKEY hkey;
if (display_driver) return &display_driver->funcs; /* already loaded */
strcpy( buffer, "x11" ); /* default value */
/* @@ Wine registry key: HKCU\Software\Wine\Drivers */
if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
{
DWORD type, count = sizeof(buffer);
RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
RegCloseKey( hkey );
}
name = buffer;
while (name)
{
next = strchr( name, ',' );
if (next) *next++ = 0;
snprintf( libname, sizeof(libname), "wine%s.drv", name );
if ((module = LoadLibraryA( libname )) != 0) break;
name = next;
}
if (!(driver = create_driver( module )))
{
MESSAGE( "Could not create graphics driver '%s'\n", buffer );
FreeLibrary( module );
ExitProcess(1);
}
if (InterlockedCompareExchangePointer( (void **)&display_driver, driver, NULL ))
{
/* somebody beat us to it */
FreeLibrary( driver->module );
HeapFree( GetProcessHeap(), 0, driver );
}
return &display_driver->funcs;
}
/**********************************************************************
* load_display_driver
*
* Special case for loading the display driver: get the name from the config file
*/
static struct graphics_driver *load_display_driver(void)
{
char buffer[MAX_PATH], libname[32], *name, *next;
HMODULE module = 0;
HKEY hkey;
if (display_driver) /* already loaded */
{
display_driver->count++;
return display_driver;
}
strcpy( buffer, "x11" ); /* default value */
/* @@ Wine registry key: HKCU\Software\Wine\Drivers */
if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\Drivers", &hkey ))
{
DWORD type, count = sizeof(buffer);
RegQueryValueExA( hkey, "Graphics", 0, &type, (LPBYTE) buffer, &count );
RegCloseKey( hkey );
}
name = buffer;
while (name)
{
next = strchr( name, ',' );
if (next) *next++ = 0;
snprintf( libname, sizeof(libname), "wine%s.drv", name );
if ((module = LoadLibraryA( libname )) != 0) break;
name = next;
}
if (!(display_driver = create_driver( module )))
{
MESSAGE( "Could not create graphics driver '%s'\n", buffer );
FreeLibrary( module );
ExitProcess(1);
}
display_driver->count++; /* we don't want to free it */
return display_driver;
}
