ICD update from Gregor Anich

1 files changed, 347 insertions, 332 deletions

diff --git a/src/mesa/drivers/windows/icd/icd.c b/src/mesa/drivers/windows/icd/icd.c
index dfb80250fa7..969f530be36 100644
--- a/src/mesa/drivers/windows/icd/icd.c
+++ b/src/mesa/drivers/windows/icd/icd.c
@@ -1,332 +1,347 @@
-/*

- * Mesa 3-D graphics library

- * Version:  6.1

- *

- * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-/*

- * File name: icd.c

- * Author:    Gregor Anich <[email protected]>

- *

- * ICD (Installable Client Driver) interface.

- * Based on the windows GDI/WGL driver.

- */

-

-#ifdef WIN32

-

-#ifdef __cplusplus

-extern "C" {

-#endif

-

-#include <windows.h>

-#define GL_GLEXT_PROTOTYPES

-#include "GL/gl.h"

-#include "GL/glext.h"

-

-#ifdef __cplusplus

-}

-#endif

-

-#include <stdio.h>

-#include <tchar.h>

-#include "../gdi/wmesadef.h"

-#include "GL/wmesa.h"

-#include "mtypes.h"

-#include "glapi.h"

-

-#define MAX_MESA_ATTRS	20

-

-

-typedef struct _icdTable {

-    DWORD size;

-    PROC  table[336];

-} ICDTABLE, *PICDTABLE;

-

-static ICDTABLE icdTable = { 336, {

-#define ICD_ENTRY(func) (PROC)mgl##func,

-#include "icdlist.h"

-#undef ICD_ENTRY

-} };

-

-struct __pixelformat__

-{

-    PIXELFORMATDESCRIPTOR	pfd;

-    GLboolean doubleBuffered;

-};

-

-struct __pixelformat__	pix[] =

-{

-    /* Double Buffer, alpha */

-    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,

-        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,

-        PFD_TYPE_RGBA,

-        24,	8,	0,	8,	8,	8,	16,	8,	24,

-        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },

-        GL_TRUE

-    },

-    /* Single Buffer, alpha */

-    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,

-        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL, /* | PFD_SUPPORT_GDI ? */

-        PFD_TYPE_RGBA,

-        24,	8,	0,	8,	8,	8,	16,	8,	24,

-        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },

-        GL_FALSE

-    },

-    /* Double Buffer, no alpha */

-    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,

-        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,

-        PFD_TYPE_RGBA,

-        24,	8,	0,	8,	8,	8,	16,	0,	0,

-        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },

-        GL_TRUE

-    },

-    /* Single Buffer, no alpha */

-    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,

-        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL, /* | PFD_SUPPORT_GDI ? */

-        PFD_TYPE_RGBA,

-        24,	8,	0,	8,	8,	8,	16,	0,	0,

-        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },

-        GL_FALSE

-    },

-};

-

-int qt_pix = sizeof(pix) / sizeof(pix[0]);

-

-typedef struct {

-    WMesaContext ctx;

-    HDC hdc;

-} MesaWglCtx;

-

-#define MESAWGL_CTX_MAX_COUNT 20

-

-static MesaWglCtx wgl_ctx[MESAWGL_CTX_MAX_COUNT];

-

-static unsigned ctx_count = 0;

-static int ctx_current = -1;

-static unsigned curPFD = 0;

-

-WGLAPI BOOL GLAPIENTRY DrvCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)

-{

-    return(FALSE);

-}

-

-WGLAPI HGLRC GLAPIENTRY DrvCreateContext(HDC hdc)

-{

-    HWND		hWnd;

-    int i = 0;

-

-    if(!(hWnd = WindowFromDC(hdc)))

-    {

-        SetLastError(0);

-        return(NULL);

-    }

-    if (!ctx_count)

-    {

-    	for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++)

-    	{

-    		wgl_ctx[i].ctx = NULL;

-    		wgl_ctx[i].hdc = NULL;

-    	}

-    }

-    for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )

-    {

-        if ( wgl_ctx[i].ctx == NULL )

-        {

-            wgl_ctx[i].ctx = WMesaCreateContext( hWnd, NULL, GL_TRUE,

-                pix[curPFD-1].doubleBuffered, 

-                pix[curPFD-1].pfd.cAlphaBits ? GL_TRUE : GL_FALSE);

-            if (wgl_ctx[i].ctx == NULL)

-                break;

-            wgl_ctx[i].hdc = hdc;

-            ctx_count++;

-            return ((HGLRC)wgl_ctx[i].ctx);

-        }

-    }

-    SetLastError(0);

-    return(NULL);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvDeleteContext(HGLRC hglrc)

-{

-    int i;

-    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )

-    {

-    	if ( wgl_ctx[i].ctx == (PWMC) hglrc )

-    	{

-            WMesaMakeCurrent((PWMC) hglrc);

-            WMesaDestroyContext();

-            wgl_ctx[i].ctx = NULL;

-            wgl_ctx[i].hdc = NULL;

-            ctx_count--;

-            return(TRUE);

-    	}

-    }

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI HGLRC GLAPIENTRY DrvCreateLayerContext(HDC hdc,int iLayerPlane)

-{

-    if (iLayerPlane == 0)

-      return DrvCreateContext(hdc);

-    SetLastError(0);

-    return(NULL);

-}

-

-WGLAPI PICDTABLE GLAPIENTRY DrvSetContext(HDC hdc,HGLRC hglrc,void *callback)

-{

-    int i;

-

-    /* new code suggested by Andy Sy */

-    if (!hdc || !hglrc) {

-       WMesaMakeCurrent(NULL);

-       ctx_current = -1;

-       return NULL;

-    }

-

-    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )

-    {

-        if ( wgl_ctx[i].ctx == (PWMC) hglrc )

-        {

-            wgl_ctx[i].hdc = hdc;

-            WMesaMakeCurrent( (PWMC) hglrc );

-            ctx_current = i;

-            return &icdTable;

-        }

-    }

-    return NULL;

-}

-

-WGLAPI void GLAPIENTRY DrvReleaseContext(HGLRC hglrc)

-{

-    WMesaMakeCurrent(NULL);

-    ctx_current = -1;

-}

-

-WGLAPI BOOL GLAPIENTRY DrvShareLists(HGLRC hglrc1,HGLRC hglrc2)

-{

-    return(TRUE);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvDescribeLayerPlane(HDC hdc,int iPixelFormat,

-                                    int iLayerPlane,UINT nBytes,

-                                    LPLAYERPLANEDESCRIPTOR plpd)

-{

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI int GLAPIENTRY DrvSetLayerPaletteEntries(HDC hdc,int iLayerPlane,

-                                       int iStart,int cEntries,

-                                       CONST COLORREF *pcr)

-{

-    SetLastError(0);

-    return(0);

-}

-

-WGLAPI int GLAPIENTRY DrvGetLayerPaletteEntries(HDC hdc,int iLayerPlane,

-                                       int iStart,int cEntries,

-                                       COLORREF *pcr)

-{

-    SetLastError(0);

-    return(0);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize)

-{

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvSwapLayerBuffers(HDC hdc,UINT fuPlanes)

-{

-    if( !hdc )

-    {

-        WMesaSwapBuffers();

-        return(TRUE);

-    }

-    SetLastError(0);

-    return(FALSE);

-}

-

-WGLAPI int GLAPIENTRY DrvDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,

-                                    LPPIXELFORMATDESCRIPTOR ppfd)

-{

-    int		qt_valid_pix;

-

-    qt_valid_pix = qt_pix;

-    if(ppfd == NULL)

-	return(qt_valid_pix);

-    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || nBytes != sizeof(PIXELFORMATDESCRIPTOR))

-    {

-        SetLastError(0);

-        return(0);

-    }

-    *ppfd = pix[iPixelFormat - 1].pfd;

-    return(qt_valid_pix);

-}

-

-/*

-* GetProcAddress - return the address of an appropriate extension

-*/

-WGLAPI PROC GLAPIENTRY DrvGetProcAddress(LPCSTR lpszProc)

-{

-   PROC p = (PROC) _glapi_get_proc_address((const char *) lpszProc);

-   if (p)

-      return p;

-

-   SetLastError(0);

-   return(NULL);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvSetPixelFormat(HDC hdc,int iPixelFormat)

-{

-    int		qt_valid_pix;

-

-    qt_valid_pix = qt_pix;

-    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix)

-    {

-        SetLastError(0);

-        return(FALSE);

-    }

-    curPFD = iPixelFormat;

-    return(TRUE);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvSwapBuffers(HDC hdc)

-{

-   if (ctx_current < 0)

-      return FALSE;

-

-   if(wgl_ctx[ctx_current].ctx == NULL) {

-      SetLastError(0);

-      return(FALSE);

-   }

-   WMesaSwapBuffers();

-   return(TRUE);

-}

-

-WGLAPI BOOL GLAPIENTRY DrvValidateVersion(DWORD version)

-{

-    return TRUE;

-}

-

-#endif /* WIN32 */

+/*
+ * Mesa 3-D graphics library
+ * Version:  6.1
+ *
+ * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * File name: icd.c
+ * Author:    Gregor Anich
+ *
+ * ICD (Installable Client Driver) interface.
+ * Based on the windows GDI/WGL driver.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <windows.h>
+#define GL_GLEXT_PROTOTYPES
+#include "GL/gl.h"
+#include "GL/glext.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#include <stdio.h>
+#include <tchar.h>
+#include "../gdi/wmesadef.h"
+#include "GL/wmesa.h"
+#include "mtypes.h"
+#include "glapi.h"
+
+#define MAX_MESA_ATTRS	20
+
+
+typedef struct _icdTable {
+    DWORD size;
+    PROC  table[336];
+} ICDTABLE, *PICDTABLE;
+
+#ifdef USE_MGL_NAMESPACE
+# define GL_FUNC(func) mgl##func
+#else
+# define GL_FUNC(func) gl##func
+#endif
+
+static ICDTABLE icdTable = { 336, {
+#define ICD_ENTRY(func) (PROC)GL_FUNC(func),
+#include "icdlist.h"
+#undef ICD_ENTRY
+} };
+
+struct __pixelformat__
+{
+    PIXELFORMATDESCRIPTOR	pfd;
+    GLboolean doubleBuffered;
+};
+
+struct __pixelformat__	pix[] =
+{
+    /* Double Buffer, alpha */
+    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,
+        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
+        PFD_TYPE_RGBA,
+        24,	8,	0,	8,	8,	8,	16,	8,	24,
+        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },
+        GL_TRUE
+    },
+    /* Single Buffer, alpha */
+    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,
+        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL, /* | PFD_SUPPORT_GDI ? */
+        PFD_TYPE_RGBA,
+        24,	8,	0,	8,	8,	8,	16,	8,	24,
+        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },
+        GL_FALSE
+    },
+    /* Double Buffer, no alpha */
+    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,
+        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER|PFD_SWAP_COPY,
+        PFD_TYPE_RGBA,
+        24,	8,	0,	8,	8,	8,	16,	0,	0,
+        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },
+        GL_TRUE
+    },
+    /* Single Buffer, no alpha */
+    {	{	sizeof(PIXELFORMATDESCRIPTOR),	1,
+        PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL, /* | PFD_SUPPORT_GDI ? */
+        PFD_TYPE_RGBA,
+        24,	8,	0,	8,	8,	8,	16,	0,	0,
+        0,	0,	0,	0,	0,	16,	8,	0,	0,	0,	0,	0,	0 },
+        GL_FALSE
+    },
+};
+
+int qt_pix = sizeof(pix) / sizeof(pix[0]);
+
+typedef struct {
+    WMesaContext ctx;
+    HDC hdc;
+} MesaWglCtx;
+
+#define MESAWGL_CTX_MAX_COUNT 20
+
+static MesaWglCtx wgl_ctx[MESAWGL_CTX_MAX_COUNT];
+
+static unsigned ctx_count = 0;
+static int ctx_current = -1;
+static unsigned curPFD = 0;
+
+WGLAPI BOOL GLAPIENTRY DrvCopyContext(HGLRC hglrcSrc,HGLRC hglrcDst,UINT mask)
+{
+    (void) hglrcSrc; (void) hglrcDst; (void) mask;
+    return(FALSE);
+}
+
+WGLAPI HGLRC GLAPIENTRY DrvCreateContext(HDC hdc)
+{
+    HWND		hWnd;
+    int i = 0;
+
+    if(!(hWnd = WindowFromDC(hdc)))
+    {
+        SetLastError(0);
+        return(NULL);
+    }
+    if (!ctx_count)
+    {
+    	for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++)
+    	{
+    		wgl_ctx[i].ctx = NULL;
+    		wgl_ctx[i].hdc = NULL;
+    	}
+    }
+    for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
+    {
+        if ( wgl_ctx[i].ctx == NULL )
+        {
+            wgl_ctx[i].ctx = WMesaCreateContext( hWnd, NULL, GL_TRUE,
+                pix[curPFD-1].doubleBuffered, 
+                pix[curPFD-1].pfd.cAlphaBits ? GL_TRUE : GL_FALSE);
+            if (wgl_ctx[i].ctx == NULL)
+                break;
+            wgl_ctx[i].hdc = hdc;
+            ctx_count++;
+            return ((HGLRC)wgl_ctx[i].ctx);
+        }
+    }
+    SetLastError(0);
+    return(NULL);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvDeleteContext(HGLRC hglrc)
+{
+    int i;
+    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
+    {
+    	if ( wgl_ctx[i].ctx == (PWMC) hglrc )
+    	{
+            WMesaMakeCurrent((PWMC) hglrc);
+            WMesaDestroyContext();
+            wgl_ctx[i].ctx = NULL;
+            wgl_ctx[i].hdc = NULL;
+            ctx_count--;
+            return(TRUE);
+    	}
+    }
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI HGLRC GLAPIENTRY DrvCreateLayerContext(HDC hdc,int iLayerPlane)
+{
+    if (iLayerPlane == 0)
+      return DrvCreateContext(hdc);
+    SetLastError(0);
+    return(NULL);
+}
+
+WGLAPI PICDTABLE GLAPIENTRY DrvSetContext(HDC hdc,HGLRC hglrc,void *callback)
+{
+    int i;
+    (void) callback;
+
+    /* new code suggested by Andy Sy */
+    if (!hdc || !hglrc) {
+       WMesaMakeCurrent(NULL);
+       ctx_current = -1;
+       return NULL;
+    }
+
+    for ( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ )
+    {
+        if ( wgl_ctx[i].ctx == (PWMC) hglrc )
+        {
+            wgl_ctx[i].hdc = hdc;
+            WMesaMakeCurrent( (PWMC) hglrc );
+            ctx_current = i;
+            return &icdTable;
+        }
+    }
+    return NULL;
+}
+
+WGLAPI void GLAPIENTRY DrvReleaseContext(HGLRC hglrc)
+{
+    (void) hglrc;
+    WMesaMakeCurrent(NULL);
+    ctx_current = -1;
+}
+
+WGLAPI BOOL GLAPIENTRY DrvShareLists(HGLRC hglrc1,HGLRC hglrc2)
+{
+    (void) hglrc1; (void) hglrc2;
+    return(TRUE);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvDescribeLayerPlane(HDC hdc,int iPixelFormat,
+                                    int iLayerPlane,UINT nBytes,
+                                    LPLAYERPLANEDESCRIPTOR plpd)
+{
+    (void) hdc; (void) iPixelFormat; (void) iLayerPlane; (void) nBytes; (void) plpd;
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI int GLAPIENTRY DrvSetLayerPaletteEntries(HDC hdc,int iLayerPlane,
+                                       int iStart,int cEntries,
+                                       CONST COLORREF *pcr)
+{
+    (void) hdc; (void) iLayerPlane; (void) iStart; (void) cEntries; (void) pcr;
+    SetLastError(0);
+    return(0);
+}
+
+WGLAPI int GLAPIENTRY DrvGetLayerPaletteEntries(HDC hdc,int iLayerPlane,
+                                       int iStart,int cEntries,
+                                       COLORREF *pcr)
+{
+    (void) hdc; (void) iLayerPlane; (void) iStart; (void) cEntries; (void) pcr;
+    SetLastError(0);
+    return(0);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvRealizeLayerPalette(HDC hdc,int iLayerPlane,BOOL bRealize)
+{
+    (void) hdc; (void) iLayerPlane; (void) bRealize;
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvSwapLayerBuffers(HDC hdc,UINT fuPlanes)
+{
+    (void) fuPlanes;
+    if( !hdc )
+    {
+        WMesaSwapBuffers();
+        return(TRUE);
+    }
+    SetLastError(0);
+    return(FALSE);
+}
+
+WGLAPI int GLAPIENTRY DrvDescribePixelFormat(HDC hdc,int iPixelFormat,UINT nBytes,
+                                    LPPIXELFORMATDESCRIPTOR ppfd)
+{
+    int	qt_valid_pix;
+    (void) hdc;
+
+    qt_valid_pix = qt_pix;
+    if(ppfd == NULL)
+	return(qt_valid_pix);
+    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix || nBytes != sizeof(PIXELFORMATDESCRIPTOR))
+    {
+        SetLastError(0);
+        return(0);
+    }
+    *ppfd = pix[iPixelFormat - 1].pfd;
+    return(qt_valid_pix);
+}
+
+/*
+* GetProcAddress - return the address of an appropriate extension
+*/
+WGLAPI PROC GLAPIENTRY DrvGetProcAddress(LPCSTR lpszProc)
+{
+   PROC p = (PROC) (int) _glapi_get_proc_address((const char *) lpszProc);
+   if (p)
+      return p;
+
+   SetLastError(0);
+   return(NULL);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvSetPixelFormat(HDC hdc,int iPixelFormat)
+{
+    int qt_valid_pix;
+    (void) hdc;
+
+    qt_valid_pix = qt_pix;
+    if(iPixelFormat < 1 || iPixelFormat > qt_valid_pix)
+    {
+        SetLastError(0);
+        return(FALSE);
+    }
+    curPFD = iPixelFormat;
+    return(TRUE);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvSwapBuffers(HDC hdc)
+{
+    (void) hdc;
+    if (ctx_current < 0)
+        return FALSE;
+
+    if(wgl_ctx[ctx_current].ctx == NULL) {
+        SetLastError(0);
+        return(FALSE);
+    }
+    WMesaSwapBuffers();
+    return(TRUE);
+}
+
+WGLAPI BOOL GLAPIENTRY DrvValidateVersion(DWORD version)
+{
+    (void) version;
+    return TRUE;
+}