Leaked source code of windows server 2003
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/******************************Module*Header*******************************\
* Module Name: wglcli.c
*
* Routines to support OpenGL client implementation.
*
* Created: 01-17-1995
* Author: Hock San Lee [hockl]
*
* Copyright (c) 1995 Microsoft Corporation
\**************************************************************************/
#include "precomp.h"
#pragma hdrstop
#ifdef _CLIENTSIDE_
#include <wingdip.h>
#include <glp.h>
#include <glscreen.h>
#include <glgenwin.h>
#include "wgldef.h"
PGLDRIVER pgldrvLoadInstalledDriver(HDC hdc);
// Mirror code from gre\rcobj.cxx
// Need DC and RC validation similar to those of DCOBJ and RCOBJ!!!
HANDLE __wglCreateContext(GLWINDOWID *pgwid, GLSURF *pgsurf)
{
HANDLE hrcSrv;
if (hrcSrv = (HANDLE) glsrvCreateContext(pgwid, pgsurf))
{
return(hrcSrv);
}
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return((HANDLE) 0);
}
BOOL __wglDeleteContext(HANDLE hrcSrv)
{
wglValidateWindows();
return(glsrvDeleteContext((PVOID) hrcSrv));
}
BOOL __wglMakeCurrent(GLWINDOWID *pgwid, HANDLE hrcSrv, BOOL bMeta)
{
BOOL bRet = FALSE;
ULONG iError = ERROR_INVALID_HANDLE; // Default error code
GLGENwindow *pwnd;
wglValidateWindows();
if (!hrcSrv)
{
glsrvLoseCurrent(GLTEB_SRVCONTEXT());
return(TRUE);
}
pwnd = pwndGetFromID(pgwid);
// Metafiles are allowed to not have pixel formats and therefore
// to not have GLGENwindows. Other types must have a genwin.
if (pwnd != NULL || bMeta)
{
iError = ERROR_NOT_ENOUGH_MEMORY;
bRet = glsrvMakeCurrent(pgwid, (PVOID) hrcSrv, pwnd);
}
else
{
WARNING("__wglMakeCurrent: No pixel genwin\n");
iError = ERROR_INVALID_PIXEL_FORMAT;
}
if (pwnd != NULL)
{
pwndRelease(pwnd);
}
if (!bRet)
{
SetLastError(iError);
}
return(bRet);
}
BOOL __wglShareLists(HANDLE hrcSrvShare, HANDLE hrcSrvSource)
{
ULONG iError;
iError = glsrvShareLists((VOID *) hrcSrvShare, (VOID *) hrcSrvSource);
if (iError == ERROR_SUCCESS)
{
return(TRUE);
}
else
{
SetLastError(iError);
return(FALSE);
}
}
BOOL __wglAttention()
{
return
(
glsrvAttention((VOID *) NULL, (VOID *) GLTEB_SRVCONTEXT(),
(VOID *) NULL, (VOID *) NULL)
);
}
int WINAPI __DrvDescribePixelFormat(HDC hdc, int ipfd, UINT cjpfd,
LPPIXELFORMATDESCRIPTOR ppfd)
{
int iRet = 0;
PGLDRIVER pglDriver;
if ((pglDriver = pgldrvLoadInstalledDriver(hdc)) &&
(pglDriver->dwFlags & GLDRIVER_CLIENT_BUFFER_CALLS))
{
ASSERTOPENGL(pglDriver->pfnDrvDescribePixelFormat != NULL,
"Missing DrvDescribePixelFormat\n");
iRet = pglDriver->pfnDrvDescribePixelFormat(hdc, ipfd, cjpfd, ppfd);
}
#ifndef _WIN95_
else
{
iRet = GdiDescribePixelFormat(hdc, ipfd, cjpfd, ppfd);
}
#endif
return iRet;
}
BOOL WINAPI __DrvSetPixelFormat(HDC hdc, int ipfd, PVOID *pwnd)
{
BOOL bRet = FALSE;
PGLDRIVER pglDriver;
if ((pglDriver = pgldrvLoadInstalledDriver(hdc)) &&
(pglDriver->dwFlags & GLDRIVER_CLIENT_BUFFER_CALLS))
{
ASSERTOPENGL(pglDriver->pfnDrvSetPixelFormat != NULL,
"Missing DrvSetPixelFormat\n");
bRet = pglDriver->pfnDrvSetPixelFormat(hdc, ipfd);
}
#ifndef _WIN95_
else
{
bRet = GdiSetPixelFormat(hdc, ipfd);
}
#endif
if ( bRet && pwnd )
{
((GLGENwindow *) pwnd)->pvDriver = (PVOID) pglDriver;
((GLGENwindow *) pwnd)->ulFlags |= GLGENWIN_DRIVERSET;
}
return bRet;
}
BOOL WINAPI __DrvSwapBuffers(HDC hdc, BOOL bFinish)
{
BOOL bRet = FALSE;
PGLDRIVER pglDriver;
if ((pglDriver = pgldrvLoadInstalledDriver(hdc)) &&
(pglDriver->dwFlags & GLDRIVER_CLIENT_BUFFER_CALLS))
{
ASSERTOPENGL(pglDriver->pfnDrvSwapBuffers != NULL,
"Missing DrvSwapBuffers\n");
// If the driver has not indicated that it doesn't
// need glFinish synchronization on swap then call
// glFinish to sync things.
if (bFinish && !(pglDriver->dwFlags & GLDRIVER_NO_FINISH_ON_SWAP))
{
glFinish();
}
bRet = pglDriver->pfnDrvSwapBuffers(hdc);
}
#ifndef _WIN95_
else
{
if (bFinish)
{
// In this case we always call glFinish for compatibility
// with previous version's behavior.
glFinish();
}
bRet = GdiSwapBuffers(hdc);
}
#endif
return bRet;
}
BOOL __wglCopyContext(HANDLE hrcSrvSrc, HANDLE hrcSrvDest, UINT fuFlags)
{
return glsrvCopyContext((VOID *) hrcSrvSrc, (VOID *) hrcSrvDest, fuFlags);
}
#endif // _CLIENTSIDE_