/*
 * Graphics driver management functions
 *
 * Copyright 1994 Bob Amstadt
 * Copyright 1996, 2001 Alexandre Julliard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <assert.h>
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winreg.h"
#include "wine/winbase16.h"
#include "winuser.h"

#include "ntgdi_private.h"
#include "wine/list.h"
#include "wine/debug.h"
#include "wine/heap.h"

WINE_DEFAULT_DEBUG_CHANNEL(driver);

struct graphics_driver
{
    struct list                entry;
    HMODULE                    module;  /* module handle */
    const struct gdi_dc_funcs *funcs;
};

struct d3dkmt_adapter
{
    D3DKMT_HANDLE handle;               /* Kernel mode graphics adapter handle */
    struct list entry;                  /* List entry */
};

struct d3dkmt_device
{
    D3DKMT_HANDLE handle;               /* Kernel mode graphics device handle*/
    struct list entry;                  /* List entry */
};

static struct list drivers = LIST_INIT( drivers );
static struct graphics_driver *display_driver;

static struct list d3dkmt_adapters = LIST_INIT( d3dkmt_adapters );
static struct list d3dkmt_devices = LIST_INIT( d3dkmt_devices );

static CRITICAL_SECTION driver_section;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
    0, 0, &driver_section,
    { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
      0, 0, { (DWORD_PTR)(__FILE__ ": driver_section") }
};
static CRITICAL_SECTION driver_section = { &critsect_debug, -1, 0, 0, 0, 0 };

static BOOL (WINAPI *pEnumDisplayMonitors)(HDC, LPRECT, MONITORENUMPROC, LPARAM);
static BOOL (WINAPI *pEnumDisplaySettingsW)(LPCWSTR, DWORD, LPDEVMODEW);
static HWND (WINAPI *pGetDesktopWindow)(void);
static BOOL (WINAPI *pGetMonitorInfoW)(HMONITOR, LPMONITORINFO);
static INT (WINAPI *pGetSystemMetrics)(INT);
static DPI_AWARENESS_CONTEXT (WINAPI *pSetThreadDpiAwarenessContext)(DPI_AWARENESS_CONTEXT);

/**********************************************************************
 *	     create_driver
 *
 * Allocate and fill the driver structure for a given module.
 */
static struct graphics_driver *create_driver( HMODULE module )
{
    static const struct gdi_dc_funcs empty_funcs;
    const struct gdi_dc_funcs *funcs = NULL;
    struct graphics_driver *driver;

    if (!(driver = HeapAlloc( GetProcessHeap(), 0, sizeof(*driver)))) return NULL;
    driver->module = module;

    if (module)
    {
        const struct gdi_dc_funcs * (CDECL *wine_get_gdi_driver)( unsigned int version );

        if ((wine_get_gdi_driver = (void *)GetProcAddress( module, "wine_get_gdi_driver" )))
            funcs = wine_get_gdi_driver( WINE_GDI_DRIVER_VERSION );
    }
    if (!funcs) funcs = &empty_funcs;
    driver->funcs = funcs;
    return driver;
}


/**********************************************************************
 *	     get_display_driver
 *
 * Special case for loading the display driver: get the name from the config file
 */
static const struct gdi_dc_funcs *get_display_driver(void)
{
    if (!display_driver)
    {
        HMODULE user32 = LoadLibraryA( "user32.dll" );
        pGetDesktopWindow = (void *)GetProcAddress( user32, "GetDesktopWindow" );

        if (!pGetDesktopWindow() || !display_driver)
        {
            WARN( "failed to load the display driver, falling back to null driver\n" );
            __wine_set_display_driver( 0 );
        }
    }
    return display_driver->funcs;
}


/**********************************************************************
 *	     is_display_device
 */
BOOL is_display_device( LPCWSTR name )
{
    const WCHAR *p = name;

    if (!name)
        return FALSE;

    if (wcsnicmp( name, L"\\\\.\\DISPLAY", lstrlenW(L"\\\\.\\DISPLAY") )) return FALSE;

    p += lstrlenW(L"\\\\.\\DISPLAY");

    if (!iswdigit( *p++ ))
        return FALSE;

    for (; *p; p++)
    {
        if (!iswdigit( *p ))
            return FALSE;
    }

    return TRUE;
}

#ifdef __i386__
static const WCHAR printer_env[] = L"w32x86";
#elif defined __x86_64__
static const WCHAR printer_env[] = L"x64";
#elif defined __arm__
static const WCHAR printer_env[] = L"arm";
#elif defined __aarch64__
static const WCHAR printer_env[] = L"arm64";
#else
#error not defined for this cpu
#endif

/**********************************************************************
 *	     DRIVER_load_driver
 */
const struct gdi_dc_funcs *DRIVER_load_driver( LPCWSTR name )
{
    HMODULE module;
    struct graphics_driver *driver, *new_driver;

    /* display driver is a special case */
    if (!wcsicmp( name, L"display" ) || is_display_device( name )) return 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 )))
    {
        WCHAR path[MAX_PATH];

        GetSystemDirectoryW( path, MAX_PATH );
        swprintf( path + wcslen(path), MAX_PATH - wcslen(path), L"\\spool\\drivers\\%s\\3\\%s",
                  printer_env, name );
        if (!(module = LoadLibraryW( path ))) 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;
}


/***********************************************************************
 *           __wine_set_display_driver    (win32u.@)
 */
void CDECL __wine_set_display_driver( HMODULE module )
{
    struct graphics_driver *driver;
    HMODULE user32;

    if (!(driver = create_driver( module )))
    {
        ERR( "Could not create graphics driver\n" );
        ExitProcess(1);
    }
    if (InterlockedCompareExchangePointer( (void **)&display_driver, driver, NULL ))
        HeapFree( GetProcessHeap(), 0, driver );

    user32 = LoadLibraryA( "user32.dll" );
    pGetMonitorInfoW = (void *)GetProcAddress( user32, "GetMonitorInfoW" );
    pGetSystemMetrics = (void *)GetProcAddress( user32, "GetSystemMetrics" );
    pEnumDisplayMonitors = (void *)GetProcAddress( user32, "EnumDisplayMonitors" );
    pEnumDisplaySettingsW = (void *)GetProcAddress( user32, "EnumDisplaySettingsW" );
    pSetThreadDpiAwarenessContext = (void *)GetProcAddress( user32, "SetThreadDpiAwarenessContext" );
}

struct monitor_info
{
    const WCHAR *name;
    RECT rect;
};

static BOOL CALLBACK monitor_enum_proc( HMONITOR monitor, HDC hdc, LPRECT rect, LPARAM lparam )
{
    struct monitor_info *info = (struct monitor_info *)lparam;
    MONITORINFOEXW mi;

    mi.cbSize = sizeof(mi);
    pGetMonitorInfoW( monitor, (MONITORINFO *)&mi );
    if (!lstrcmpiW( info->name, mi.szDevice ))
    {
        info->rect = mi.rcMonitor;
        return FALSE;
    }

    return TRUE;
}

static INT CDECL nulldrv_AbortDoc( PHYSDEV dev )
{
    return 0;
}

static BOOL CDECL nulldrv_Arc( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
                               INT xstart, INT ystart, INT xend, INT yend )
{
    return TRUE;
}

static BOOL CDECL nulldrv_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
                                 INT xstart, INT ystart, INT xend, INT yend )
{
    return TRUE;
}

static BOOL CDECL nulldrv_CreateCompatibleDC( PHYSDEV orig, PHYSDEV *pdev )
{
    if (!display_driver || !display_driver->funcs->pCreateCompatibleDC) return TRUE;
    return display_driver->funcs->pCreateCompatibleDC( NULL, pdev );
}

static BOOL CDECL nulldrv_CreateDC( PHYSDEV *dev, LPCWSTR driver, LPCWSTR device,
                                    LPCWSTR output, const DEVMODEW *devmode )
{
    assert(0);  /* should never be called */
    return FALSE;
}

static BOOL CDECL nulldrv_DeleteDC( PHYSDEV dev )
{
    assert(0);  /* should never be called */
    return TRUE;
}

static BOOL CDECL nulldrv_DeleteObject( PHYSDEV dev, HGDIOBJ obj )
{
    return TRUE;
}

static BOOL CDECL nulldrv_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
{
    return TRUE;
}

static INT CDECL nulldrv_EndDoc( PHYSDEV dev )
{
    return 0;
}

static INT CDECL nulldrv_EndPage( PHYSDEV dev )
{
    return 0;
}

static BOOL CDECL nulldrv_EnumFonts( PHYSDEV dev, LOGFONTW *logfont, FONTENUMPROCW proc, LPARAM lParam )
{
    return TRUE;
}

static INT CDECL nulldrv_ExtEscape( PHYSDEV dev, INT escape, INT in_size, const void *in_data,
                                    INT out_size, void *out_data )
{
    return 0;
}

static BOOL CDECL nulldrv_ExtFloodFill( PHYSDEV dev, INT x, INT y, COLORREF color, UINT type )
{
    return TRUE;
}

static BOOL CDECL nulldrv_FontIsLinked( PHYSDEV dev )
{
    return FALSE;
}

static UINT CDECL nulldrv_GetBoundsRect( PHYSDEV dev, RECT *rect, UINT flags )
{
    return DCB_RESET;
}

static BOOL CDECL nulldrv_GetCharABCWidths( PHYSDEV dev, UINT first, UINT count,
                                            WCHAR *chars, ABC *abc )
{
    return FALSE;
}

static BOOL CDECL nulldrv_GetCharABCWidthsI( PHYSDEV dev, UINT first, UINT count, WORD *indices, LPABC abc )
{
    return FALSE;
}

static BOOL CDECL nulldrv_GetCharWidth( PHYSDEV dev, UINT first, UINT count,
                                        const WCHAR *chars, INT *buffer )
{
    return FALSE;
}

static BOOL CDECL nulldrv_GetCharWidthInfo( PHYSDEV dev, void *info )
{
    return FALSE;
}

static INT CDECL nulldrv_GetDeviceCaps( PHYSDEV dev, INT cap )
{
    int bpp;

    switch (cap)
    {
    case DRIVERVERSION:   return 0x4000;
    case TECHNOLOGY:      return DT_RASDISPLAY;
    case HORZSIZE:        return MulDiv( NtGdiGetDeviceCaps( dev->hdc, HORZRES ), 254,
                                         NtGdiGetDeviceCaps( dev->hdc, LOGPIXELSX ) * 10 );
    case VERTSIZE:        return MulDiv( NtGdiGetDeviceCaps( dev->hdc, VERTRES ), 254,
                                         NtGdiGetDeviceCaps( dev->hdc, LOGPIXELSY ) * 10 );
    case HORZRES:
    {
        DC *dc = get_nulldrv_dc( dev );
        struct monitor_info info;

        if (dc->display[0] && pEnumDisplayMonitors && pGetMonitorInfoW)
        {
            info.name = dc->display;
            SetRectEmpty( &info.rect );
            pEnumDisplayMonitors( NULL, NULL, monitor_enum_proc, (LPARAM)&info );
            if (!IsRectEmpty( &info.rect ))
                return info.rect.right - info.rect.left;
        }

        return pGetSystemMetrics ? pGetSystemMetrics( SM_CXSCREEN ) : 640;
    }
    case VERTRES:
    {
        DC *dc = get_nulldrv_dc( dev );
        struct monitor_info info;

        if (dc->display[0] && pEnumDisplayMonitors && pGetMonitorInfoW)
        {
            info.name = dc->display;
            SetRectEmpty( &info.rect );
            pEnumDisplayMonitors( NULL, NULL, monitor_enum_proc, (LPARAM)&info );
            if (!IsRectEmpty( &info.rect ))
                return info.rect.bottom - info.rect.top;
        }

        return pGetSystemMetrics ? pGetSystemMetrics( SM_CYSCREEN ) : 480;
    }
    case BITSPIXEL:
    {
        DEVMODEW devmode;
        WCHAR *display;
        DC *dc;

        if (NtGdiGetDeviceCaps( dev->hdc, TECHNOLOGY ) == DT_RASDISPLAY && pEnumDisplaySettingsW)
        {
            dc = get_nulldrv_dc( dev );
            display = dc->display[0] ? dc->display : NULL;
            memset( &devmode, 0, sizeof(devmode) );
            devmode.dmSize = sizeof(devmode);
            if (pEnumDisplaySettingsW( display, ENUM_CURRENT_SETTINGS, &devmode )
                && devmode.dmFields & DM_BITSPERPEL && devmode.dmBitsPerPel)
                return devmode.dmBitsPerPel;
        }
        return 32;
    }
    case PLANES:          return 1;
    case NUMBRUSHES:      return -1;
    case NUMPENS:         return -1;
    case NUMMARKERS:      return 0;
    case NUMFONTS:        return 0;
    case PDEVICESIZE:     return 0;
    case CURVECAPS:       return (CC_CIRCLES | CC_PIE | CC_CHORD | CC_ELLIPSES | CC_WIDE |
                                  CC_STYLED | CC_WIDESTYLED | CC_INTERIORS | CC_ROUNDRECT);
    case LINECAPS:        return (LC_POLYLINE | LC_MARKER | LC_POLYMARKER | LC_WIDE |
                                  LC_STYLED | LC_WIDESTYLED | LC_INTERIORS);
    case POLYGONALCAPS:   return (PC_POLYGON | PC_RECTANGLE | PC_WINDPOLYGON | PC_SCANLINE |
                                  PC_WIDE | PC_STYLED | PC_WIDESTYLED | PC_INTERIORS);
    case TEXTCAPS:        return (TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
                                  TC_CR_ANY | TC_SF_X_YINDEP | TC_SA_DOUBLE | TC_SA_INTEGER |
                                  TC_SA_CONTIN | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE | TC_VA_ABLE);
    case CLIPCAPS:        return CP_RECTANGLE;
    case RASTERCAPS:      return (RC_BITBLT | RC_BITMAP64 | RC_GDI20_OUTPUT | RC_DI_BITMAP | RC_DIBTODEV |
                                  RC_BIGFONT | RC_STRETCHBLT | RC_FLOODFILL | RC_STRETCHDIB | RC_DEVBITS |
                                  (NtGdiGetDeviceCaps( dev->hdc, SIZEPALETTE ) ? RC_PALETTE : 0));
    case ASPECTX:         return 36;
    case ASPECTY:         return 36;
    case ASPECTXY:        return (int)(hypot( NtGdiGetDeviceCaps( dev->hdc, ASPECTX ),
                                              NtGdiGetDeviceCaps( dev->hdc, ASPECTY )) + 0.5);
    case CAPS1:           return 0;
    case SIZEPALETTE:     return 0;
    case NUMRESERVED:     return 20;
    case PHYSICALWIDTH:   return 0;
    case PHYSICALHEIGHT:  return 0;
    case PHYSICALOFFSETX: return 0;
    case PHYSICALOFFSETY: return 0;
    case SCALINGFACTORX:  return 0;
    case SCALINGFACTORY:  return 0;
    case VREFRESH:
    {
        DEVMODEW devmode;
        WCHAR *display;
        DC *dc;

        if (NtGdiGetDeviceCaps( dev->hdc, TECHNOLOGY ) != DT_RASDISPLAY)
            return 0;

        if (pEnumDisplaySettingsW)
        {
            dc = get_nulldrv_dc( dev );

            memset( &devmode, 0, sizeof(devmode) );
            devmode.dmSize = sizeof(devmode);
            display = dc->display[0] ? dc->display : NULL;
            if (pEnumDisplaySettingsW( display, ENUM_CURRENT_SETTINGS, &devmode ))
                return devmode.dmDisplayFrequency ? devmode.dmDisplayFrequency : 1;
        }

        return 1;
    }
    case DESKTOPHORZRES:
        if (NtGdiGetDeviceCaps( dev->hdc, TECHNOLOGY ) == DT_RASDISPLAY && pGetSystemMetrics)
        {
            DPI_AWARENESS_CONTEXT context;
            UINT ret;
            context = pSetThreadDpiAwarenessContext( DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE );
            ret = pGetSystemMetrics( SM_CXVIRTUALSCREEN );
            pSetThreadDpiAwarenessContext( context );
            return ret;
        }
        return NtGdiGetDeviceCaps( dev->hdc, HORZRES );
    case DESKTOPVERTRES:
        if (NtGdiGetDeviceCaps( dev->hdc, TECHNOLOGY ) == DT_RASDISPLAY && pGetSystemMetrics)
        {
            DPI_AWARENESS_CONTEXT context;
            UINT ret;
            context = pSetThreadDpiAwarenessContext( DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE );
            ret = pGetSystemMetrics( SM_CYVIRTUALSCREEN );
            pSetThreadDpiAwarenessContext( context );
            return ret;
        }
        return NtGdiGetDeviceCaps( dev->hdc, VERTRES );
    case BLTALIGNMENT:    return 0;
    case SHADEBLENDCAPS:  return 0;
    case COLORMGMTCAPS:   return 0;
    case LOGPIXELSX:
    case LOGPIXELSY:      return get_system_dpi();
    case NUMCOLORS:
        bpp = NtGdiGetDeviceCaps( dev->hdc, BITSPIXEL );
        return (bpp > 8) ? -1 : (1 << bpp);
    case COLORRES:
        /* The observed correspondence between BITSPIXEL and COLORRES is:
         * BITSPIXEL: 8  -> COLORRES: 18
         * BITSPIXEL: 16 -> COLORRES: 16
         * BITSPIXEL: 24 -> COLORRES: 24
         * BITSPIXEL: 32 -> COLORRES: 24 */
        bpp = NtGdiGetDeviceCaps( dev->hdc, BITSPIXEL );
        return (bpp <= 8) ? 18 : min( 24, bpp );
    default:
        FIXME("(%p): unsupported capability %d, will return 0\n", dev->hdc, cap );
        return 0;
    }
}

static BOOL CDECL nulldrv_GetDeviceGammaRamp( PHYSDEV dev, void *ramp )
{
    SetLastError( ERROR_INVALID_PARAMETER );
    return FALSE;
}

static DWORD CDECL nulldrv_GetFontData( PHYSDEV dev, DWORD table, DWORD offset, LPVOID buffer, DWORD length )
{
    return FALSE;
}

static BOOL CDECL nulldrv_GetFontRealizationInfo( PHYSDEV dev, void *info )
{
    return FALSE;
}

static DWORD CDECL nulldrv_GetFontUnicodeRanges( PHYSDEV dev, LPGLYPHSET glyphs )
{
    return 0;
}

static DWORD CDECL nulldrv_GetGlyphIndices( PHYSDEV dev, LPCWSTR str, INT count, LPWORD indices, DWORD flags )
{
    return GDI_ERROR;
}

static DWORD CDECL nulldrv_GetGlyphOutline( PHYSDEV dev, UINT ch, UINT format, LPGLYPHMETRICS metrics,
                                            DWORD size, LPVOID buffer, const MAT2 *mat )
{
    return GDI_ERROR;
}

static BOOL CDECL nulldrv_GetICMProfile( PHYSDEV dev, BOOL allow_default, LPDWORD size, LPWSTR filename )
{
    return FALSE;
}

static DWORD CDECL nulldrv_GetImage( PHYSDEV dev, BITMAPINFO *info, struct gdi_image_bits *bits,
                                     struct bitblt_coords *src )
{
    return ERROR_NOT_SUPPORTED;
}

static DWORD CDECL nulldrv_GetKerningPairs( PHYSDEV dev, DWORD count, LPKERNINGPAIR pairs )
{
    return 0;
}

static UINT CDECL nulldrv_GetOutlineTextMetrics( PHYSDEV dev, UINT size, LPOUTLINETEXTMETRICW otm )
{
    return 0;
}

static UINT CDECL nulldrv_GetTextCharsetInfo( PHYSDEV dev, LPFONTSIGNATURE fs, DWORD flags )
{
    return DEFAULT_CHARSET;
}

static BOOL CDECL nulldrv_GetTextExtentExPoint( PHYSDEV dev, LPCWSTR str, INT count, INT *dx )
{
    return FALSE;
}

static BOOL CDECL nulldrv_GetTextExtentExPointI( PHYSDEV dev, const WORD *indices, INT count, INT *dx )
{
    return FALSE;
}

static INT CDECL nulldrv_GetTextFace( PHYSDEV dev, INT size, LPWSTR name )
{
    INT ret = 0;
    LOGFONTW font;
    DC *dc = get_nulldrv_dc( dev );

    if (NtGdiExtGetObjectW( dc->hFont, sizeof(font), &font ))
    {
        ret = lstrlenW( font.lfFaceName ) + 1;
        if (name)
        {
            lstrcpynW( name, font.lfFaceName, size );
            ret = min( size, ret );
        }
    }
    return ret;
}

static BOOL CDECL nulldrv_GetTextMetrics( PHYSDEV dev, TEXTMETRICW *metrics )
{
    return FALSE;
}

static BOOL CDECL nulldrv_LineTo( PHYSDEV dev, INT x, INT y )
{
    return TRUE;
}

static BOOL CDECL nulldrv_MoveTo( PHYSDEV dev, INT x, INT y )
{
    return TRUE;
}

static BOOL CDECL nulldrv_PaintRgn( PHYSDEV dev, HRGN rgn )
{
    return TRUE;
}

static BOOL CDECL nulldrv_PatBlt( PHYSDEV dev, struct bitblt_coords *dst, DWORD rop )
{
    return TRUE;
}

static BOOL CDECL nulldrv_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
                               INT xstart, INT ystart, INT xend, INT yend )
{
    return TRUE;
}

static BOOL CDECL nulldrv_PolyPolygon( PHYSDEV dev, const POINT *points, const INT *counts, UINT polygons )
{
    return TRUE;
}

static BOOL CDECL nulldrv_PolyPolyline( PHYSDEV dev, const POINT *points, const DWORD *counts, DWORD lines )
{
    return TRUE;
}

static DWORD CDECL nulldrv_PutImage( PHYSDEV dev, HRGN clip, BITMAPINFO *info,
                                     const struct gdi_image_bits *bits, struct bitblt_coords *src,
                                     struct bitblt_coords *dst, DWORD rop )
{
    return ERROR_SUCCESS;
}

static UINT CDECL nulldrv_RealizeDefaultPalette( PHYSDEV dev )
{
    return 0;
}

static UINT CDECL nulldrv_RealizePalette( PHYSDEV dev, HPALETTE palette, BOOL primary )
{
    return 0;
}

static BOOL CDECL nulldrv_Rectangle( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
{
    return TRUE;
}

static BOOL CDECL nulldrv_ResetDC( PHYSDEV dev, const DEVMODEW *devmode )
{
    return FALSE;
}

static BOOL CDECL nulldrv_RoundRect( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
                                     INT ell_width, INT ell_height )
{
    return TRUE;
}

static HBITMAP CDECL nulldrv_SelectBitmap( PHYSDEV dev, HBITMAP bitmap )
{
    return bitmap;
}

static HBRUSH CDECL nulldrv_SelectBrush( PHYSDEV dev, HBRUSH brush, const struct brush_pattern *pattern )
{
    return brush;
}

static HFONT CDECL nulldrv_SelectFont( PHYSDEV dev, HFONT font, UINT *aa_flags )
{
    return font;
}

static HPEN CDECL nulldrv_SelectPen( PHYSDEV dev, HPEN pen, const struct brush_pattern *pattern )
{
    return pen;
}

static COLORREF CDECL nulldrv_SetBkColor( PHYSDEV dev, COLORREF color )
{
    return color;
}

static UINT CDECL nulldrv_SetBoundsRect( PHYSDEV dev, RECT *rect, UINT flags )
{
    return DCB_RESET;
}

static COLORREF CDECL nulldrv_SetDCBrushColor( PHYSDEV dev, COLORREF color )
{
    return color;
}

static COLORREF CDECL nulldrv_SetDCPenColor( PHYSDEV dev, COLORREF color )
{
    return color;
}

static void CDECL nulldrv_SetDeviceClipping( PHYSDEV dev, HRGN rgn )
{
}

static BOOL CDECL nulldrv_SetDeviceGammaRamp( PHYSDEV dev, void *ramp )
{
    SetLastError( ERROR_INVALID_PARAMETER );
    return FALSE;
}

static COLORREF CDECL nulldrv_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
{
    return color;
}

static COLORREF CDECL nulldrv_SetTextColor( PHYSDEV dev, COLORREF color )
{
    return color;
}

static INT CDECL nulldrv_StartDoc( PHYSDEV dev, const DOCINFOW *info )
{
    return 0;
}

static INT CDECL nulldrv_StartPage( PHYSDEV dev )
{
    return 1;
}

static BOOL CDECL nulldrv_UnrealizePalette( HPALETTE palette )
{
    return FALSE;
}

static NTSTATUS CDECL nulldrv_D3DKMTCheckVidPnExclusiveOwnership( const D3DKMT_CHECKVIDPNEXCLUSIVEOWNERSHIP *desc )
{
    return STATUS_PROCEDURE_NOT_FOUND;
}

static NTSTATUS CDECL nulldrv_D3DKMTSetVidPnSourceOwner( const D3DKMT_SETVIDPNSOURCEOWNER *desc )
{
    return STATUS_PROCEDURE_NOT_FOUND;
}

static struct opengl_funcs * CDECL nulldrv_wine_get_wgl_driver( PHYSDEV dev, UINT version )
{
    return (void *)-1;
}

static const struct vulkan_funcs * CDECL nulldrv_wine_get_vulkan_driver( PHYSDEV dev, UINT version )
{
    return NULL;
}

const struct gdi_dc_funcs null_driver =
{
    nulldrv_AbortDoc,                   /* pAbortDoc */
    nulldrv_AbortPath,                  /* pAbortPath */
    nulldrv_AlphaBlend,                 /* pAlphaBlend */
    nulldrv_AngleArc,                   /* pAngleArc */
    nulldrv_Arc,                        /* pArc */
    nulldrv_ArcTo,                      /* pArcTo */
    nulldrv_BeginPath,                  /* pBeginPath */
    nulldrv_BlendImage,                 /* pBlendImage */
    nulldrv_Chord,                      /* pChord */
    nulldrv_CloseFigure,                /* pCloseFigure */
    nulldrv_CreateCompatibleDC,         /* pCreateCompatibleDC */
    nulldrv_CreateDC,                   /* pCreateDC */
    nulldrv_DeleteDC,                   /* pDeleteDC */
    nulldrv_DeleteObject,               /* pDeleteObject */
    nulldrv_Ellipse,                    /* pEllipse */
    nulldrv_EndDoc,                     /* pEndDoc */
    nulldrv_EndPage,                    /* pEndPage */
    nulldrv_EndPath,                    /* pEndPath */
    nulldrv_EnumFonts,                  /* pEnumFonts */
    nulldrv_ExtEscape,                  /* pExtEscape */
    nulldrv_ExtFloodFill,               /* pExtFloodFill */
    nulldrv_ExtTextOut,                 /* pExtTextOut */
    nulldrv_FillPath,                   /* pFillPath */
    nulldrv_FillRgn,                    /* pFillRgn */
    nulldrv_FontIsLinked,               /* pFontIsLinked */
    nulldrv_FrameRgn,                   /* pFrameRgn */
    nulldrv_GetBoundsRect,              /* pGetBoundsRect */
    nulldrv_GetCharABCWidths,           /* pGetCharABCWidths */
    nulldrv_GetCharABCWidthsI,          /* pGetCharABCWidthsI */
    nulldrv_GetCharWidth,               /* pGetCharWidth */
    nulldrv_GetCharWidthInfo,           /* pGetCharWidthInfo */
    nulldrv_GetDeviceCaps,              /* pGetDeviceCaps */
    nulldrv_GetDeviceGammaRamp,         /* pGetDeviceGammaRamp */
    nulldrv_GetFontData,                /* pGetFontData */
    nulldrv_GetFontRealizationInfo,     /* pGetFontRealizationInfo */
    nulldrv_GetFontUnicodeRanges,       /* pGetFontUnicodeRanges */
    nulldrv_GetGlyphIndices,            /* pGetGlyphIndices */
    nulldrv_GetGlyphOutline,            /* pGetGlyphOutline */
    nulldrv_GetICMProfile,              /* pGetICMProfile */
    nulldrv_GetImage,                   /* pGetImage */
    nulldrv_GetKerningPairs,            /* pGetKerningPairs */
    nulldrv_GetNearestColor,            /* pGetNearestColor */
    nulldrv_GetOutlineTextMetrics,      /* pGetOutlineTextMetrics */
    nulldrv_GetPixel,                   /* pGetPixel */
    nulldrv_GetSystemPaletteEntries,    /* pGetSystemPaletteEntries */
    nulldrv_GetTextCharsetInfo,         /* pGetTextCharsetInfo */
    nulldrv_GetTextExtentExPoint,       /* pGetTextExtentExPoint */
    nulldrv_GetTextExtentExPointI,      /* pGetTextExtentExPointI */
    nulldrv_GetTextFace,                /* pGetTextFace */
    nulldrv_GetTextMetrics,             /* pGetTextMetrics */
    nulldrv_GradientFill,               /* pGradientFill */
    nulldrv_InvertRgn,                  /* pInvertRgn */
    nulldrv_LineTo,                     /* pLineTo */
    nulldrv_MoveTo,                     /* pMoveTo */
    nulldrv_PaintRgn,                   /* pPaintRgn */
    nulldrv_PatBlt,                     /* pPatBlt */
    nulldrv_Pie,                        /* pPie */
    nulldrv_PolyBezier,                 /* pPolyBezier */
    nulldrv_PolyBezierTo,               /* pPolyBezierTo */
    nulldrv_PolyDraw,                   /* pPolyDraw */
    nulldrv_PolyPolygon,                /* pPolyPolygon */
    nulldrv_PolyPolyline,               /* pPolyPolyline */
    nulldrv_PolylineTo,                 /* pPolylineTo */
    nulldrv_PutImage,                   /* pPutImage */
    nulldrv_RealizeDefaultPalette,      /* pRealizeDefaultPalette */
    nulldrv_RealizePalette,             /* pRealizePalette */
    nulldrv_Rectangle,                  /* pRectangle */
    nulldrv_ResetDC,                    /* pResetDC */
    nulldrv_RoundRect,                  /* pRoundRect */
    nulldrv_SelectBitmap,               /* pSelectBitmap */
    nulldrv_SelectBrush,                /* pSelectBrush */
    nulldrv_SelectFont,                 /* pSelectFont */
    nulldrv_SelectPen,                  /* pSelectPen */
    nulldrv_SetBkColor,                 /* pSetBkColor */
    nulldrv_SetBoundsRect,              /* pSetBoundsRect */
    nulldrv_SetDCBrushColor,            /* pSetDCBrushColor */
    nulldrv_SetDCPenColor,              /* pSetDCPenColor */
    nulldrv_SetDIBitsToDevice,          /* pSetDIBitsToDevice */
    nulldrv_SetDeviceClipping,          /* pSetDeviceClipping */
    nulldrv_SetDeviceGammaRamp,         /* pSetDeviceGammaRamp */
    nulldrv_SetPixel,                   /* pSetPixel */
    nulldrv_SetTextColor,               /* pSetTextColor */
    nulldrv_StartDoc,                   /* pStartDoc */
    nulldrv_StartPage,                  /* pStartPage */
    nulldrv_StretchBlt,                 /* pStretchBlt */
    nulldrv_StretchDIBits,              /* pStretchDIBits */
    nulldrv_StrokeAndFillPath,          /* pStrokeAndFillPath */
    nulldrv_StrokePath,                 /* pStrokePath */
    nulldrv_UnrealizePalette,           /* pUnrealizePalette */
    nulldrv_D3DKMTCheckVidPnExclusiveOwnership, /* pD3DKMTCheckVidPnExclusiveOwnership */
    nulldrv_D3DKMTSetVidPnSourceOwner,  /* pD3DKMTSetVidPnSourceOwner */
    nulldrv_wine_get_wgl_driver,        /* wine_get_wgl_driver */
    nulldrv_wine_get_vulkan_driver,     /* wine_get_vulkan_driver */

    GDI_PRIORITY_NULL_DRV               /* priority */
};


/*****************************************************************************
 *      DRIVER_GetDriverName
 *
 */
BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size )
{
    WCHAR *p;

    /* display is a special case */
    if (!wcsicmp( device, L"display" ) || is_display_device( device ))
    {
        lstrcpynW( driver, L"display", size );
        return TRUE;
    }

    size = GetProfileStringW(L"devices", device, L"", driver, size);
    if(!size) {
        WARN("Unable to find %s in [devices] section of win.ini\n", debugstr_w(device));
        return FALSE;
    }
    p = wcschr(driver, ',');
    if(!p)
    {
        WARN("%s entry in [devices] section of win.ini is malformed.\n", debugstr_w(device));
        return FALSE;
    }
    *p = 0;
    TRACE("Found %s for %s\n", debugstr_w(driver), debugstr_w(device));
    return TRUE;
}


/******************************************************************************
 *		NtGdiExtEscape   (win32u.@)
 *
 * Access capabilities of a particular device that are not available through GDI.
 */
INT WINAPI NtGdiExtEscape( HDC hdc, WCHAR *driver, int driver_id, INT escape, INT input_size,
                           const char *input, INT output_size, char *output )
{
    PHYSDEV physdev;
    INT ret;
    DC * dc = get_dc_ptr( hdc );

    if (!dc) return 0;
    update_dc( dc );
    physdev = GET_DC_PHYSDEV( dc, pExtEscape );
    ret = physdev->funcs->pExtEscape( physdev, escape, input_size, input, output_size, output );
    release_dc_ptr( dc );
    return ret;
}


/******************************************************************************
 *           NtGdiDdDDIOpenAdapterFromHdc    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDIOpenAdapterFromHdc( D3DKMT_OPENADAPTERFROMHDC *desc )
{
    FIXME( "(%p): stub\n", desc );
    return STATUS_NO_MEMORY;
}

/******************************************************************************
 *           NtGdiDdDDIEscape    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDIEscape( const D3DKMT_ESCAPE *desc )
{
    FIXME( "(%p): stub\n", desc );
    return STATUS_NO_MEMORY;
}

/******************************************************************************
 *           NtGdiDdDDICloseAdapter    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDICloseAdapter( const D3DKMT_CLOSEADAPTER *desc )
{
    NTSTATUS status = STATUS_INVALID_PARAMETER;
    struct d3dkmt_adapter *adapter;

    TRACE("(%p)\n", desc);

    if (!desc || !desc->hAdapter)
        return STATUS_INVALID_PARAMETER;

    EnterCriticalSection( &driver_section );
    LIST_FOR_EACH_ENTRY( adapter, &d3dkmt_adapters, struct d3dkmt_adapter, entry )
    {
        if (adapter->handle == desc->hAdapter)
        {
            list_remove( &adapter->entry );
            heap_free( adapter );
            status = STATUS_SUCCESS;
            break;
        }
    }
    LeaveCriticalSection( &driver_section );

    return status;
}

/******************************************************************************
 *           NtGdiDdDDIOpenAdapterFromDeviceName    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDIOpenAdapterFromDeviceName( D3DKMT_OPENADAPTERFROMDEVICENAME *desc )
{
    D3DKMT_OPENADAPTERFROMLUID desc_luid;
    NTSTATUS status;

    FIXME( "desc %p stub.\n", desc );

    if (!desc || !desc->pDeviceName) return STATUS_INVALID_PARAMETER;

    memset( &desc_luid, 0, sizeof( desc_luid ));
    if ((status = NtGdiDdDDIOpenAdapterFromLuid( &desc_luid ))) return status;

    desc->AdapterLuid = desc_luid.AdapterLuid;
    desc->hAdapter = desc_luid.hAdapter;
    return STATUS_SUCCESS;
}

/******************************************************************************
 *           NtGdiDdDDIOpenAdapterFromLuid    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDIOpenAdapterFromLuid( D3DKMT_OPENADAPTERFROMLUID *desc )
{
    static D3DKMT_HANDLE handle_start = 0;
    struct d3dkmt_adapter *adapter;

    if (!(adapter = heap_alloc( sizeof( *adapter ) ))) return STATUS_NO_MEMORY;

    EnterCriticalSection( &driver_section );
    desc->hAdapter = adapter->handle = ++handle_start;
    list_add_tail( &d3dkmt_adapters, &adapter->entry );
    LeaveCriticalSection( &driver_section );
    return STATUS_SUCCESS;
}

/******************************************************************************
 *           NtGdiDdDDICreateDevice    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDICreateDevice( D3DKMT_CREATEDEVICE *desc )
{
    static D3DKMT_HANDLE handle_start = 0;
    struct d3dkmt_adapter *adapter;
    struct d3dkmt_device *device;
    BOOL found = FALSE;

    TRACE("(%p)\n", desc);

    if (!desc)
        return STATUS_INVALID_PARAMETER;

    EnterCriticalSection( &driver_section );
    LIST_FOR_EACH_ENTRY( adapter, &d3dkmt_adapters, struct d3dkmt_adapter, entry )
    {
        if (adapter->handle == desc->hAdapter)
        {
            found = TRUE;
            break;
        }
    }
    LeaveCriticalSection( &driver_section );

    if (!found)
        return STATUS_INVALID_PARAMETER;

    if (desc->Flags.LegacyMode || desc->Flags.RequestVSync || desc->Flags.DisableGpuTimeout)
        FIXME("Flags unsupported.\n");

    device = heap_alloc_zero( sizeof( *device ) );
    if (!device)
        return STATUS_NO_MEMORY;

    EnterCriticalSection( &driver_section );
    device->handle = ++handle_start;
    list_add_tail( &d3dkmt_devices, &device->entry );
    LeaveCriticalSection( &driver_section );

    desc->hDevice = device->handle;
    return STATUS_SUCCESS;
}

/******************************************************************************
 *           NtGdiDdDDIDestroyDevice    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDIDestroyDevice( const D3DKMT_DESTROYDEVICE *desc )
{
    NTSTATUS status = STATUS_INVALID_PARAMETER;
    D3DKMT_SETVIDPNSOURCEOWNER set_owner_desc;
    struct d3dkmt_device *device;

    TRACE("(%p)\n", desc);

    if (!desc || !desc->hDevice)
        return STATUS_INVALID_PARAMETER;

    EnterCriticalSection( &driver_section );
    LIST_FOR_EACH_ENTRY( device, &d3dkmt_devices, struct d3dkmt_device, entry )
    {
        if (device->handle == desc->hDevice)
        {
            memset( &set_owner_desc, 0, sizeof(set_owner_desc) );
            set_owner_desc.hDevice = desc->hDevice;
            NtGdiDdDDISetVidPnSourceOwner( &set_owner_desc );
            list_remove( &device->entry );
            heap_free( device );
            status = STATUS_SUCCESS;
            break;
        }
    }
    LeaveCriticalSection( &driver_section );

    return status;
}

/******************************************************************************
 *           NtGdiDdDDIQueryStatistics    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDIQueryStatistics( D3DKMT_QUERYSTATISTICS *stats )
{
    FIXME("(%p): stub\n", stats);
    return STATUS_SUCCESS;
}

/******************************************************************************
 *           NtGdiDdDDISetQueuedLimit    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDISetQueuedLimit( D3DKMT_SETQUEUEDLIMIT *desc )
{
    FIXME( "(%p): stub\n", desc );
    return STATUS_NOT_IMPLEMENTED;
}

/******************************************************************************
 *           NtGdiDdDDISetVidPnSourceOwner    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDISetVidPnSourceOwner( const D3DKMT_SETVIDPNSOURCEOWNER *desc )
{
    TRACE("(%p)\n", desc);

    if (!get_display_driver()->pD3DKMTSetVidPnSourceOwner)
        return STATUS_PROCEDURE_NOT_FOUND;

    if (!desc || !desc->hDevice || (desc->VidPnSourceCount && (!desc->pType || !desc->pVidPnSourceId)))
        return STATUS_INVALID_PARAMETER;

    /* Store the VidPN source ownership info in the graphics driver because
     * the graphics driver needs to change ownership sometimes. For example,
     * when a new window is moved to a VidPN source with an exclusive owner,
     * such an exclusive owner will be released before showing the new window */
    return get_display_driver()->pD3DKMTSetVidPnSourceOwner( desc );
}

/******************************************************************************
 *           NtGdiDdDDICheckVidPnExclusiveOwnership    (win32u.@)
 */
NTSTATUS WINAPI NtGdiDdDDICheckVidPnExclusiveOwnership( const D3DKMT_CHECKVIDPNEXCLUSIVEOWNERSHIP *desc )
{
    TRACE("(%p)\n", desc);

    if (!get_display_driver()->pD3DKMTCheckVidPnExclusiveOwnership)
        return STATUS_PROCEDURE_NOT_FOUND;

    if (!desc || !desc->hAdapter)
        return STATUS_INVALID_PARAMETER;

    return get_display_driver()->pD3DKMTCheckVidPnExclusiveOwnership( desc );
}