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win32u: Read and cache adapter modes from the registry.

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Rémi Bernon 2022-07-01 06:56:54 +02:00 committed by Alexandre Julliard
parent 20414797ed
commit 546638a875
1 changed files with 28 additions and 2 deletions
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30
dlls/win32u/sysparams.c
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@ -203,6 +203,8 @@ static const WCHAR guid_devinterface_monitorW[] =
{'{','E','6','F','0','7','B','5','F','-','E','E','9','7','-','4','A','9','0','-',
'B','0','7','6','-','3','3','F','5','7','B','F','4','E','A','A','7','}',0};
#define NEXT_DEVMODEW(mode) ((DEVMODEW *)((char *)((mode) + 1) + (mode)->dmDriverExtra))
/* Cached display device information */
struct display_device
{
@ -220,6 +222,8 @@ struct adapter
struct display_device dev;
unsigned int id;
const WCHAR *config_key;
unsigned int mode_count;
DEVMODEW *modes;
};
struct monitor
@ -545,8 +549,9 @@ static BOOL read_display_adapter_settings( unsigned int index, struct adapter *i
char buffer[4096];
KEY_VALUE_PARTIAL_INFORMATION *value = (void *)buffer;
WCHAR *value_str = (WCHAR *)value->Data;
DWORD i, driver_extra = 0, size;
DEVMODEW *mode;
HKEY hkey;
DWORD size;
if (!enum_key && !(enum_key = reg_open_key( NULL, enum_keyW, sizeof(enum_keyW) )))
return FALSE;
@ -585,10 +590,29 @@ static BOOL read_display_adapter_settings( unsigned int index, struct adapter *i
/* Interface name */
info->dev.interface_name[0] = 0;
/* ModeCount / DriverExtra */
if (query_reg_value( hkey, mode_countW, value, sizeof(buffer) ) && value->Type == REG_DWORD)
info->mode_count = *(const DWORD *)value->Data;
if (query_reg_value( hkey, driver_extraW, value, sizeof(buffer) ) && value->Type == REG_DWORD)
driver_extra = *(const DWORD *)value->Data;
/* Modes */
if ((info->modes = calloc( info->mode_count, sizeof(DEVMODEW) + driver_extra )))
{
for (i = 0, mode = info->modes; i < info->mode_count; i++)
{
mode->dmSize = offsetof(DEVMODEW, dmICMMethod);
mode->dmDriverExtra = driver_extra;
if (!read_adapter_mode( hkey, i, mode )) break;
mode = NEXT_DEVMODEW(mode);
}
info->mode_count = i;
}
/* DeviceID */
size = query_reg_value( hkey, gpu_idW, value, sizeof(buffer) );
NtClose( hkey );
if (!size || value->Type != REG_SZ) return FALSE;
if (!size || value->Type != REG_SZ || !info->mode_count || !info->modes) return FALSE;
if (!(hkey = reg_open_key( enum_key, value_str, value->DataLength - sizeof(WCHAR) )))
return FALSE;
@ -1370,6 +1394,7 @@ static void clear_display_devices(void)
{
adapter = LIST_ENTRY( list_head( &adapters ), struct adapter, entry );
list_remove( &adapter->entry );
free( adapter->modes );
free( adapter );
}
}
@ -1408,6 +1433,7 @@ static BOOL update_display_cache_from_registry(void)
if (!read_display_adapter_settings( adapter_id, adapter ))
{
free( adapter->modes );
free( adapter );
break;
}