Sweden-Number/dlls/gdi32/opengl.c

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/*
* OpenGL function forwarding to the display driver
*
* Copyright (c) 1999 Lionel Ulmer
* Copyright (c) 2005 Raphael Junqueira
* Copyright (c) 2006 Roderick Colenbrander
*
* 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 "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winerror.h"
#include "winternl.h"
#include "winnt.h"
#include "gdi_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wgl);
static const WCHAR opengl32W[] = {'o','p','e','n','g','l','3','2','.','d','l','l',0};
static HMODULE opengl32;
static INT (WINAPI *wglChoosePixelFormat)(HDC,const PIXELFORMATDESCRIPTOR *);
static INT (WINAPI *wglDescribePixelFormat)(HDC,INT,UINT,PIXELFORMATDESCRIPTOR*);
static INT (WINAPI *wglGetPixelFormat)(HDC);
static BOOL (WINAPI *wglSetPixelFormat)(HDC,INT,const PIXELFORMATDESCRIPTOR*);
static BOOL (WINAPI *wglSwapBuffers)(HDC);
/***********************************************************************
* __wine_get_wgl_driver (GDI32.@)
*/
const struct wgl_funcs * CDECL __wine_get_wgl_driver( HDC hdc, UINT version )
{
const struct wgl_funcs *ret = NULL;
DC * dc = get_dc_ptr( hdc );
if (dc)
{
PHYSDEV physdev = GET_DC_PHYSDEV( dc, wine_get_wgl_driver );
ret = physdev->funcs->wine_get_wgl_driver( physdev, version );
release_dc_ptr( dc );
}
return ret;
}
/******************************************************************************
* ChoosePixelFormat (GDI32.@)
*/
INT WINAPI ChoosePixelFormat( HDC hdc, const PIXELFORMATDESCRIPTOR *pfd )
{
if (!wglChoosePixelFormat)
{
if (!opengl32) opengl32 = LoadLibraryW( opengl32W );
if (!(wglChoosePixelFormat = (void *)GetProcAddress( opengl32, "wglChoosePixelFormat" )))
return 0;
}
return wglChoosePixelFormat( hdc, pfd );
}
/******************************************************************************
* DescribePixelFormat (GDI32.@)
*/
INT WINAPI DescribePixelFormat( HDC hdc, INT fmt, UINT size, PIXELFORMATDESCRIPTOR *pfd )
{
if (!wglDescribePixelFormat)
{
if (!opengl32) opengl32 = LoadLibraryW( opengl32W );
if (!(wglDescribePixelFormat = (void *)GetProcAddress( opengl32, "wglDescribePixelFormat" )))
return 0;
}
return wglDescribePixelFormat( hdc, fmt, size, pfd );
}
/******************************************************************************
* GetPixelFormat (GDI32.@)
*/
INT WINAPI GetPixelFormat( HDC hdc )
{
if (!wglGetPixelFormat)
{
if (!opengl32) opengl32 = LoadLibraryW( opengl32W );
if (!(wglGetPixelFormat = (void *)GetProcAddress( opengl32, "wglGetPixelFormat" )))
return 0;
}
return wglGetPixelFormat( hdc );
}
/******************************************************************************
* SetPixelFormat (GDI32.@)
*/
BOOL WINAPI SetPixelFormat( HDC hdc, INT fmt, const PIXELFORMATDESCRIPTOR *pfd )
{
if (!wglSetPixelFormat)
{
if (!opengl32) opengl32 = LoadLibraryW( opengl32W );
if (!(wglSetPixelFormat = (void *)GetProcAddress( opengl32, "wglSetPixelFormat" )))
return 0;
}
return wglSetPixelFormat( hdc, fmt, pfd );
}
/******************************************************************************
* SwapBuffers (GDI32.@)
*/
BOOL WINAPI SwapBuffers( HDC hdc )
{
if (!wglSwapBuffers)
{
if (!opengl32) opengl32 = LoadLibraryW( opengl32W );
if (!(wglSwapBuffers = (void *)GetProcAddress( opengl32, "wglSwapBuffers" )))
return 0;
}
return wglSwapBuffers( hdc );
}