xserver git update 15/5/2010

1 files changed, 3610 insertions, 3610 deletions

diff --git a/xorg-server/hw/dmx/glxProxy/glxcmds.c b/xorg-server/hw/dmx/glxProxy/glxcmds.c
index 31fd431e7..a2fe0b27b 100644
--- a/xorg-server/hw/dmx/glxProxy/glxcmds.c
+++ b/xorg-server/hw/dmx/glxProxy/glxcmds.c
@@ -1,3610 +1,3610 @@
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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 including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * 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
- * SILICON GRAPHICS, INC. 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.
- *
- * Except as contained in this notice, the name of Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-#ifdef HAVE_DMX_CONFIG_H
-#include <dmx-config.h>
-#endif
-
-#include "dmx.h"
-#include "dmxwindow.h"
-#include "dmxpixmap.h"
-#include "dmxfont.h"
-#include "dmxsync.h"
-
-#undef Xmalloc
-#undef Xcalloc
-#undef Xrealloc
-#undef Xfree
-
-#include "glxserver.h"
-#include <GL/glxtokens.h>
-#include "g_disptab.h"
-#include <pixmapstr.h>
-#include <windowstr.h>
-#include "glxutil.h"
-#include "glxext.h"
-#include "unpack.h"
-
-#include "GL/glxproto.h"
-#include "glxvendor.h"
-#include "glxvisuals.h"
-#include "glxswap.h"
-
-#ifdef PANORAMIX
-#include "panoramiXsrv.h"
-#endif
-
-extern __GLXFBConfig **__glXFBConfigs;
-extern int            __glXNumFBConfigs;
-
-extern __GLXFBConfig *glxLookupFBConfig( GLXFBConfigID id );
-extern __GLXFBConfig *glxLookupFBConfigByVID( VisualID vid );
-extern __GLXFBConfig *glxLookupBackEndFBConfig( GLXFBConfigID id, int screen );
-extern int glxIsExtensionSupported( char *ext );
-extern int __glXGetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc);
-
-#define BE_TO_CLIENT_ERROR(x) \
-           ( (x) >= __glXerrorBase ? \
-             (x) - dmxScreen->glxErrorBase + __glXerrorBase \
-	     : (x) )
-
-Display *GetBackEndDisplay( __GLXclientState *cl, int s )
-{
-   if (! cl->be_displays[s] ) {
-      cl->be_displays[s] = XOpenDisplay( DisplayString(dmxScreens[s].beDisplay) );
-   }
-   return( cl->be_displays[s] );
-}
-
-/*
-** Create a GL context with the given properties.
-*/
-static int CreateContext(__GLXclientState *cl, 
-                         GLXContextID gcId,
-			 VisualID vid, GLXFBConfigID fbconfigId,
-			 int screen,
-			 GLXContextID shareList,
-			 int isDirect )
-{
-    ClientPtr client = cl->client;
-    xGLXCreateContextReq *be_req;
-    xGLXCreateNewContextReq *be_new_req;
-    VisualPtr pVisual;
-    ScreenPtr pScreen;
-    __GLXcontext *glxc, *shareglxc;
-    __GLXvisualConfig *pGlxVisual;
-    __GLXscreenInfo *pGlxScreen;
-    VisualID visual = vid;
-    GLint i;
-    int from_screen = screen;
-    int to_screen = screen;
-    DMXScreenInfo *dmxScreen;
-    VisualID be_vid;
-    GLXFBConfigID be_fbconfigId;
-    int num_be_screens;
-    Display *dpy;
-    
-    /*
-    ** Check if screen exists.
-    */
-    if (screen >= screenInfo.numScreens) {
-	client->errorValue = screen;
-	return BadValue;
-    }
-
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    /*
-     ** Find the display list space that we want to share.  
-     **
-     */
-    if (shareList == None) {
-       shareglxc = NULL;
-    } else {
-       shareglxc = (__GLXcontext *) LookupIDByType(shareList, __glXContextRes);
-       if (!shareglxc) {
-	  client->errorValue = shareList;
-	  return __glXBadContext;
-       }
-    }
-
-    /*
-    ** Allocate memory for the new context
-    */
-    glxc = __glXCalloc(1, sizeof(__GLXcontext));
-    if (!glxc) {
-	return BadAlloc;
-    }
-
-    pScreen = screenInfo.screens[screen];
-    pGlxScreen = &__glXActiveScreens[screen];
-
-    if (fbconfigId != None) {
-       glxc->pFBConfig = glxLookupFBConfig( fbconfigId );
-       if (!glxc->pFBConfig) {
-	  client->errorValue = fbconfigId;
-	  __glXFree( glxc );
-	  return BadValue;
-       }
-       visual = glxc->pFBConfig->associatedVisualId;
-    }
-    else {
-       glxc->pFBConfig = NULL;
-    }
-
-    if (visual != None) {
-       /*
-	** Check if the visual ID is valid for this screen.
-	*/
-       pVisual = pScreen->visuals;
-       for (i = 0; i < pScreen->numVisuals; i++, pVisual++) {
-	  if (pVisual->vid == visual) {
-	     break;
-	  }
-       }
-       if (i == pScreen->numVisuals) {
-	  client->errorValue = visual;
-	  __glXFree( glxc );
-	  return BadValue;
-       }
-
-       pGlxVisual = pGlxScreen->pGlxVisual;
-       for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {
-	  if (pGlxVisual->vid == visual) {
-	     break;
-	  }
-       }
-       if (i == pGlxScreen->numVisuals) {
-	  /*
-	   ** Visual not support on this screen by this OpenGL implementation.
-	   */
-	  client->errorValue = visual;
-	  __glXFree( glxc );
-	  return BadValue;
-       }
-
-       if ( glxc->pFBConfig == NULL ) {
-	   glxc->pFBConfig = glxLookupFBConfigByVID( visual );
-
-	   if ( glxc->pFBConfig == NULL ) {
-	      /*
-               * visual does not have an FBConfig ???
-	      client->errorValue = visual;
-	      __glXFree( glxc );
-	      return BadValue;
-	       */
-	   }
-       }
-    }
-    else {
-       pVisual = NULL;
-       pGlxVisual = NULL;
-    }
-
-    glxc->pScreen = pScreen;
-    glxc->pGlxScreen = pGlxScreen;
-    glxc->pVisual = pVisual;
-    glxc->pGlxVisual = pGlxVisual;
-
-    /*
-     * allocate memory for back-end servers info
-     */
-    num_be_screens = to_screen - from_screen + 1;
-    glxc->real_ids = (XID *)__glXMalloc(sizeof(XID) * num_be_screens);
-    if (!glxc->real_ids) {
-	return BadAlloc;
-    }
-    glxc->real_vids = (XID *)__glXMalloc(sizeof(XID) * num_be_screens);
-    if (!glxc->real_vids) {
-	return BadAlloc;
-    }
-
-    for (screen = from_screen; screen <= to_screen; screen++) {
-       int sent = 0;
-       pScreen = screenInfo.screens[screen];
-       pGlxScreen = &__glXActiveScreens[screen];
-       dmxScreen = &dmxScreens[screen];
-
-       if (glxc->pFBConfig) {
-	  __GLXFBConfig *beFBConfig = glxLookupBackEndFBConfig( glxc->pFBConfig->id, 
-		                                                screen );
-	  be_fbconfigId = beFBConfig->id;
-       }
-
-       if (pGlxVisual) {
-
-	  be_vid = glxMatchGLXVisualInConfigList( pGlxVisual,
-	                                    dmxScreen->glxVisuals,
-					    dmxScreen->numGlxVisuals  );
-
-	  if (!be_vid) {
-	     /* visual is not supported on the back-end server */
-	     __glXFree( glxc->real_ids );
-	     __glXFree( glxc->real_vids );
-	     __glXFree( glxc );
-	     return BadValue;
-	  }
-       }
-
-       glxc->real_ids[screen-from_screen] = XAllocID(GetBackEndDisplay(cl,screen));
-
-       /* send the create context request to the back-end server */
-       dpy = GetBackEndDisplay(cl,screen);
-       if (glxc->pFBConfig) {
-	     /*Since for a certain visual both RGB and COLOR INDEX
-	      *can be on then the only parmeter to choose the renderType
-	      * should be the class of the colormap since all 4 first 
-	      * classes does not support RGB mode only COLOR INDEX ,
-	      * and so TrueColor and DirectColor does not support COLOR INDEX*/
-	     int renderType =  glxc->pFBConfig->renderType;  
-	     if ( pVisual ) {
-		 switch ( pVisual->class ){
-		     case PseudoColor:
-                     case StaticColor:
-                     case GrayScale:
-                     case StaticGray:
-                         renderType = GLX_COLOR_INDEX_TYPE;
-                         break;
-                     case TrueColor:
-                     case DirectColor:
-                     default:
-                         renderType = GLX_RGBA_TYPE;
-                     break;
-		 }
-	     }
-	  if ( __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	     LockDisplay(dpy);
-	     GetReq(GLXCreateNewContext,be_new_req);
-	     be_new_req->reqType = dmxScreen->glxMajorOpcode;
-	     be_new_req->glxCode = X_GLXCreateNewContext;
-	     be_new_req->context = (unsigned int)glxc->real_ids[screen-from_screen];
-	     be_new_req->fbconfig = (unsigned int)be_fbconfigId;
-	     be_new_req->screen = DefaultScreen(dpy);
-	     be_new_req->renderType = renderType;  
-
-	     be_new_req->shareList = (shareglxc ? shareglxc->real_ids[screen-from_screen] : 0);
-	     be_new_req->isDirect = 0;
-	     UnlockDisplay(dpy);
-	     glxc->real_vids[screen-from_screen] = be_fbconfigId;
-	     sent = 1;
-	  }
-	  else if (glxIsExtensionSupported("GLX_SGIX_fbconfig")) {
-
-	     xGLXCreateContextWithConfigSGIXReq *ext_req;
-	     xGLXVendorPrivateReq *vpreq;
-	     LockDisplay(dpy);
-	     GetReqExtra(GLXVendorPrivate,
-		         sz_xGLXCreateContextWithConfigSGIXReq - sz_xGLXVendorPrivateReq,
-			vpreq);
-	     ext_req = (xGLXCreateContextWithConfigSGIXReq *)vpreq;
-	     ext_req->reqType = dmxScreen->glxMajorOpcode;
-	     ext_req->glxCode = X_GLXVendorPrivate;
-	     ext_req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
-	     ext_req->context = (unsigned int)glxc->real_ids[screen-from_screen];
-	     ext_req->fbconfig = (unsigned int)be_fbconfigId;
-	     ext_req->screen = DefaultScreen(dpy);
-	     ext_req->renderType = renderType;  
-	     ext_req->shareList = (shareglxc ? shareglxc->real_ids[screen-from_screen] : 0);
-	     ext_req->isDirect = 0;
-	     UnlockDisplay(dpy);
-	     glxc->real_vids[screen-from_screen] = be_fbconfigId;
-	     sent = 1;
-	  }
-       }
-
-       if (!sent) {
-	  LockDisplay(dpy);
-	  GetReq(GLXCreateContext,be_req);
-	  be_req->reqType = dmxScreen->glxMajorOpcode;
-	  be_req->glxCode = X_GLXCreateContext;
-	  be_req->context = (unsigned int)glxc->real_ids[screen-from_screen];
-	  be_req->visual = (unsigned int)be_vid;
-	  be_req->screen = DefaultScreen(dpy);
-	  be_req->shareList = (shareglxc ? shareglxc->real_ids[screen-from_screen] : 0);
-	  be_req->isDirect = 0;
-	  UnlockDisplay(dpy);
-	  glxc->real_vids[screen-from_screen] = be_vid;
-       }
-       SyncHandle();
-
-    }
-
-    /*
-    ** Register this context as a resource.
-    */
-    if (!AddResource(gcId, __glXContextRes, (pointer)glxc)) {
-       __glXFree( glxc->real_ids );
-       __glXFree( glxc->real_vids );
-       __glXFree( glxc );
-	client->errorValue = gcId;
-	return BadAlloc;
-    }
-    
-    /*
-    ** Finally, now that everything is working, setup the rest of the
-    ** context.
-    */
-    glxc->id = gcId;
-    glxc->share_id = shareList;
-    glxc->idExists = GL_TRUE;
-    glxc->isCurrent = GL_FALSE;
-
-    return Success;
-}
-
-int __glXCreateContext(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;
-
-    return( CreateContext(cl, req->context,req->visual, None,
-	                  req->screen, req->shareList, req->isDirect) );
-
-}
-
-int __glXCreateNewContext(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc;
-
-    return( CreateContext(cl, req->context,None, req->fbconfig,
-	                  req->screen, req->shareList, req->isDirect) );
-
-}
-
-int __glXCreateContextWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateContextWithConfigSGIXReq *req = (xGLXCreateContextWithConfigSGIXReq *) pc;
-
-    return( CreateContext(cl, req->context, None, req->fbconfig,
-	                  req->screen, req->shareList, req->isDirect) );
-
-}
-
-int __glXQueryMaxSwapBarriersSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryMaxSwapBarriersSGIXReq *req =
-	(xGLXQueryMaxSwapBarriersSGIXReq *)pc;
-    xGLXQueryMaxSwapBarriersSGIXReply reply;
-
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = 0;
-    reply.max = QueryMaxSwapBarriersSGIX(req->screen);
-
-    if (client->swapped) {
-	__glXSwapQueryMaxSwapBarriersSGIXReply(client, &reply);
-    } else {
-	WriteToClient(client, sz_xGLXQueryMaxSwapBarriersSGIXReply,
-		      (char *)&reply);
-    }
-
-    return Success;
-}
-
-int __glXBindSwapBarrierSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXBindSwapBarrierSGIXReq *req = (xGLXBindSwapBarrierSGIXReq *)pc;
-    DrawablePtr pDraw;
-    __GLXpixmap *pGlxPixmap = NULL;
-    __glXWindow *pGlxWindow = NULL;
-    int rc;
-
-    rc = dixLookupDrawable(&pDraw, req->drawable, client, 0, DixGetAttrAccess);
-    if (rc != Success) {
-	pGlxPixmap = (__GLXpixmap *) LookupIDByType(req->drawable,
-						    __glXPixmapRes);
-	if (pGlxPixmap) pDraw = pGlxPixmap->pDraw;
-    }
-
-    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-       pGlxWindow = (__glXWindow *) LookupIDByType(req->drawable,
-						   __glXWindowRes);
-       if (pGlxWindow) pDraw = pGlxWindow->pDraw;
-    }
-
-    if (!pDraw) {
-       client->errorValue = req->drawable;
-       return __glXBadDrawable;
-    }
-
-    return BindSwapBarrierSGIX(pDraw, req->barrier);
-}
-
-int __glXJoinSwapGroupSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXJoinSwapGroupSGIXReq *req = (xGLXJoinSwapGroupSGIXReq *)pc;
-    DrawablePtr pDraw, pMember = NULL;
-    __GLXpixmap *pGlxPixmap = NULL;
-    __glXWindow *pGlxWindow = NULL;
-    int rc;
-
-    rc = dixLookupDrawable(&pDraw, req->drawable, client, 0, DixManageAccess);
-    if (rc != Success) {
-	pGlxPixmap = (__GLXpixmap *) LookupIDByType(req->drawable,
-						    __glXPixmapRes);
-	if (pGlxPixmap) pDraw = pGlxPixmap->pDraw;
-    }
-
-    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-       pGlxWindow = (__glXWindow *) LookupIDByType(req->drawable,
-						   __glXWindowRes);
-       if (pGlxWindow) pDraw = pGlxWindow->pDraw;
-    }
-
-    if (!pDraw) {
-       client->errorValue = req->drawable;
-       return __glXBadDrawable;
-    }
-
-    if (req->member != None) {
-	rc = dixLookupDrawable(&pMember, req->member, client, 0,
-			       DixGetAttrAccess);
-	if (rc != Success) {
-	    pGlxPixmap = (__GLXpixmap *) LookupIDByType(req->member,
-							__glXPixmapRes);
-	    if (pGlxPixmap) pMember = pGlxPixmap->pDraw;
-	}
-
-	if (!pMember && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	    pGlxWindow = (__glXWindow *) LookupIDByType(req->member,
-							__glXWindowRes);
-	    if (pGlxWindow) pMember = pGlxWindow->pDraw;
-	}
-
-	if (!pMember) {
-	    client->errorValue = req->member;
-	    return __glXBadDrawable;
-	}
-    }
-
-    return JoinSwapGroupSGIX(pDraw, pMember);
-}
-
-
-/*
-** Destroy a GL context as an X resource.
-*/
-int __glXDestroyContext(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;
-    xGLXDestroyContextReq *be_req;
-    GLXContextID gcId = req->context;
-    __GLXcontext *glxc;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-    
-    glxc = (__GLXcontext *) LookupIDByType(gcId, __glXContextRes);
-    if (glxc) {
-	/*
-	** Just free the resource; don't actually destroy the context,
-	** because it might be in use.  The
-	** destroy method will be called by the resource destruction routine
-	** if necessary.
-	*/
-	FreeResourceByType(gcId, __glXContextRes, FALSE);
-
-	from_screen = to_screen = glxc->pScreen->myNum;
-
-    } else {
-	client->errorValue = gcId;
-	return __glXBadContext;
-    }
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    /*
-     * send DestroyContext request to all back-end servers
-     */
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReq(GLXDestroyContext,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXDestroyContext;
-       be_req->context = glxc->real_ids[s-from_screen];
-       UnlockDisplay(dpy);
-       SyncHandle();
-    }
-
-    return Success;
-}
-
-/*****************************************************************************/
-
-/*
-** For each client, the server keeps a table of all the contexts that are
-** current for that client (each thread of a client may have its own current
-** context).  These routines add, change, and lookup contexts in the table.
-*/
-
-/*
-** Add a current context, and return the tag that will be used to refer to it.
-*/
-static int AddCurrentContext(__GLXclientState *cl, __GLXcontext *glxc, DrawablePtr pDraw)
-{
-    int i;
-    int num = cl->numCurrentContexts;
-    __GLXcontext **table = cl->currentContexts;
-
-    if (!glxc) return -1;
-    
-    /*
-    ** Try to find an empty slot and use it.
-    */
-    for (i=0; i < num; i++) {
-	if (!table[i]) {
-	    table[i] = glxc;
-	    return i+1;
-	}
-    }
-    /*
-    ** Didn't find a free slot, so we'll have to grow the table.
-    */
-    if (!num) {
-	table = (__GLXcontext **) __glXMalloc(sizeof(__GLXcontext *));
-	cl->currentDrawables = (DrawablePtr *) __glXMalloc(sizeof(DrawablePtr));
-	cl->be_currentCTag = (GLXContextTag *) __glXMalloc(screenInfo.numScreens *sizeof(GLXContextTag));
-    } else {
-	table = (__GLXcontext **) __glXRealloc(table,
-					   (num+1)*sizeof(__GLXcontext *));
-	cl->currentDrawables = (DrawablePtr *) __glXRealloc(
-	                                          cl->currentDrawables ,
-						  (num+1)*sizeof(DrawablePtr));
-	cl->be_currentCTag = (GLXContextTag *) __glXRealloc(cl->be_currentCTag,
-	            (num+1)*screenInfo.numScreens*sizeof(GLXContextTag));
-    }
-    table[num] = glxc;
-    cl->currentDrawables[num] = pDraw;
-    cl->currentContexts = table;
-    cl->numCurrentContexts++;
-
-    memset(cl->be_currentCTag + num*screenInfo.numScreens, 0, 
-	         screenInfo.numScreens * sizeof(GLXContextTag));
-
-    return num+1;
-}
-
-/*
-** Given a tag, change the current context for the corresponding entry.
-*/
-static void ChangeCurrentContext(__GLXclientState *cl, __GLXcontext *glxc,
-				GLXContextTag tag)
-{
-    __GLXcontext **table = cl->currentContexts;
-    table[tag-1] = glxc;
-}
-
-/*
-** Given a tag, and back-end screen number, retrives the current back-end
-** tag.
-*/
-int GetCurrentBackEndTag(__GLXclientState *cl, GLXContextTag tag, int s)
-{
-   if (tag >0) {
-      return( cl->be_currentCTag[ (tag-1)*screenInfo.numScreens + s ] );
-   }
-   else {
-      return( 0 );
-   }
-}
-
-/*
-** Given a tag, and back-end screen number, sets the current back-end
-** tag.
-*/
-static void SetCurrentBackEndTag(__GLXclientState *cl, GLXContextTag tag, int s, GLXContextTag be_tag)
-{
-   if (tag >0) {
-      cl->be_currentCTag[ (tag-1)*screenInfo.numScreens + s ] = be_tag;
-   }
-}
-
-/*
-** For this implementation we have chosen to simply use the index of the
-** context's entry in the table as the context tag.  A tag must be greater
-** than 0.
-*/
-__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag)
-{
-    int num = cl->numCurrentContexts;
-
-    if (tag < 1 || tag > num) {
-	return 0;
-    } else {
-	return cl->currentContexts[tag-1];
-    }
-}
-
-DrawablePtr __glXLookupDrawableByTag(__GLXclientState *cl, GLXContextTag tag)
-{
-    int num = cl->numCurrentContexts;
-
-    if (tag < 1 || tag > num) {
-	return 0;
-    } else {
-	return cl->currentDrawables[tag-1];
-    }
-}
-
-/*****************************************************************************/
-
-static void StopUsingContext(__GLXcontext *glxc)
-{
-    if (glxc) {
-	if (glxc == __glXLastContext) {
-	    /* Tell server GL library */
-	    __glXLastContext = 0;
-	}
-	glxc->isCurrent = GL_FALSE;
-	if (!glxc->idExists) {
-	    __glXFreeContext(glxc);
-	}
-    }
-}
-
-static void StartUsingContext(__GLXclientState *cl, __GLXcontext *glxc)
-{
-    glxc->isCurrent = GL_TRUE;
-}
-
-/*****************************************************************************/
-/*
-** Make an OpenGL context and drawable current.
-*/
-static int MakeCurrent(__GLXclientState *cl,
-                       GLXDrawable drawable,
-                       GLXDrawable readdrawable,
-		       GLXContextID context,
-		       GLXContextTag oldContextTag)
-{
-    ClientPtr client = cl->client;
-    DrawablePtr pDraw = NULL;
-    DrawablePtr pReadDraw = NULL;
-    xGLXMakeCurrentReadSGIReply new_reply;
-    xGLXMakeCurrentReq *be_req;
-    xGLXMakeCurrentReply be_reply;
-    xGLXMakeContextCurrentReq *be_new_req;
-    xGLXMakeContextCurrentReply be_new_reply;
-    GLXDrawable drawId = drawable;
-    GLXDrawable readId = readdrawable;
-    GLXContextID contextId = context;
-    __GLXpixmap *pGlxPixmap = 0;
-    __GLXpixmap *pReadGlxPixmap = 0;
-    __GLXcontext *glxc, *prevglxc;
-    GLXContextTag tag = oldContextTag;
-    WindowPtr pWin = NULL;
-    WindowPtr pReadWin = NULL;
-    __glXWindow *pGlxWindow = NULL;
-    __glXWindow *pGlxReadWindow = NULL;
-    __glXPbuffer *pGlxPbuffer = NULL;
-    __glXPbuffer *pGlxReadPbuffer = NULL;
-#ifdef PANORAMIX
-    PanoramiXRes *pXinDraw = NULL;
-    PanoramiXRes *pXinReadDraw = NULL;
-#endif
-    int from_screen = 0;
-    int to_screen = 0;
-    int s, rc;
-
-    /*
-    ** If one is None and the other isn't, it's a bad match.
-    */
-    if ((drawId == None && contextId != None) ||
-	(drawId != None && contextId == None)) {
-	return BadMatch;
-    }
-    
-    /*
-    ** Lookup old context.  If we have one, it must be in a usable state.
-    */
-    if (tag != 0) {
-	prevglxc = __glXLookupContextByTag(cl, tag);
-	if (!prevglxc) {
-	    /*
-	    ** Tag for previous context is invalid.
-	    */
-	    return __glXBadContextTag;
-	}
-    } else {
-	prevglxc = 0;
-    }
-
-    /*
-    ** Lookup new context.  It must not be current for someone else.
-    */
-    if (contextId != None) {
-	glxc = (__GLXcontext *) LookupIDByType(contextId, __glXContextRes);
-	if (!glxc) {
-	    client->errorValue = contextId;
-	    return __glXBadContext;
-	}
-	if ((glxc != prevglxc) && glxc->isCurrent) {
-	    /* Context is current to somebody else */
-	    return BadAccess;
-	}
-    } else {
-	/* Switching to no context.  Ignore new drawable. */
-	glxc = 0;
-    }
-
-    if (drawId != None) {
-	rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixWriteAccess);
-	if (rc == Success) {
-	    if (pDraw->type == DRAWABLE_WINDOW) {
-		/*
-		** Drawable is an X Window.
-		*/
-	        VisualID vid;
-		pWin = (WindowPtr)pDraw;
-		vid = wVisual(pWin);
-
-		new_reply.writeVid = (glxc->pFBConfig ? glxc->pFBConfig->id : vid);
-		new_reply.writeType = GLX_WINDOW_TYPE;
-
-		/*
-		** Check if window and context are similar.
-		*/
-		if ((vid != glxc->pVisual->vid) ||
-		    (pWin->drawable.pScreen != glxc->pScreen)) {
-		    client->errorValue = drawId;
-		    return BadMatch;
-		}
-
-		from_screen = to_screen = pWin->drawable.pScreen->myNum;
-
-	    } else {
-		/*
-		** An X Pixmap is not allowed as a parameter (a GLX Pixmap
-		** is, but it must first be created with glxCreateGLXPixmap).
-		*/
-		client->errorValue = drawId;
-		return __glXBadDrawable;
-	    }
-	}
-
-        if (!pDraw) {
-	    pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
-							__glXPixmapRes);
-	    if (pGlxPixmap) {
-		/*
-		** Check if pixmap and context are similar.
-		*/
-		if (pGlxPixmap->pScreen != glxc->pScreen ||
-		    pGlxPixmap->pGlxVisual != glxc->pGlxVisual) {
-		    client->errorValue = drawId;
-		    return BadMatch;
-		}
-		pDraw = pGlxPixmap->pDraw;
-
-		new_reply.writeVid = (glxc->pFBConfig ? glxc->pFBConfig->id : 
-		                      pGlxPixmap->pGlxVisual->vid);
-
-		new_reply.writeType = GLX_PIXMAP_TYPE;
-
-		from_screen = to_screen = pGlxPixmap->pScreen->myNum;
-
-	    }
-	}
-
-	if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	   pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);
-            if (pGlxWindow) {
-                /*
-                ** Drawable is a GLXWindow.
-                **
-                ** Check if GLX window and context are similar.
-                */
-                if (pGlxWindow->pScreen != glxc->pScreen ||
-                    pGlxWindow->pGlxFBConfig != glxc->pFBConfig) {
-                    client->errorValue = drawId;
-                    return BadMatch;
-                }
-
-                pDraw = pGlxWindow->pDraw;
-                new_reply.writeVid = pGlxWindow->pGlxFBConfig->id;
-                new_reply.writeType = GLX_GLXWINDOW_TYPE;
-            }
-
-	}
-
-	if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	   pGlxPbuffer = (__glXPbuffer *)LookupIDByType(drawId, __glXPbufferRes);
-	   if (pGlxPbuffer) {
-                if (pGlxPbuffer->pScreen != glxc->pScreen ||
-                    pGlxPbuffer->pFBConfig != glxc->pFBConfig) {
-                    client->errorValue = drawId;
-                    return BadMatch;
-                }
-
-		pDraw = (DrawablePtr)pGlxPbuffer;
-                new_reply.writeVid = pGlxPbuffer->pFBConfig->id;
-                new_reply.writeType = GLX_PBUFFER_TYPE;
-	   }
-	}
-
-	if (!pDraw) {
-	   /*
-    	    ** Drawable is not a Window , GLXWindow or a GLXPixmap.
-	    */
-	   client->errorValue = drawId;
-	   return __glXBadDrawable;
-	}
-
-    } else {
-	pDraw = 0;
-    }
-
-    if (readId != None && readId != drawId ) {
-	rc = dixLookupDrawable(&pReadDraw, readId, client, 0, DixReadAccess);
-	if (rc == Success) {
-	    if (pReadDraw->type == DRAWABLE_WINDOW) {
-		/*
-		** Drawable is an X Window.
-		*/
-	        VisualID vid;
-		pReadWin = (WindowPtr)pDraw;
-		vid = wVisual(pReadWin);
-
-		new_reply.readVid = (glxc->pFBConfig ? glxc->pFBConfig->id : vid);
-		new_reply.readType = GLX_WINDOW_TYPE;
-
-		/*
-		** Check if window and context are similar.
-		*/
-		if ((vid != glxc->pVisual->vid) ||
-		    (pReadWin->drawable.pScreen != glxc->pScreen)) {
-		    client->errorValue = readId;
-		    return BadMatch;
-		}
-
-	    } else {
-
-		/*
-		** An X Pixmap is not allowed as a parameter (a GLX Pixmap
-		** is, but it must first be created with glxCreateGLXPixmap).
-		*/
-		client->errorValue = readId;
-		return __glXBadDrawable;
-	    }
-	}
-
-	if (!pReadDraw) {
-	    pReadGlxPixmap = (__GLXpixmap *) LookupIDByType(readId,
-							__glXPixmapRes);
-	    if (pReadGlxPixmap) {
-		/*
-		** Check if pixmap and context are similar.
-		*/
-		if (pReadGlxPixmap->pScreen != glxc->pScreen ||
-		    pReadGlxPixmap->pGlxVisual != glxc->pGlxVisual) {
-		    client->errorValue = readId;
-		    return BadMatch;
-		}
-		pReadDraw = pReadGlxPixmap->pDraw;
-
-		new_reply.readVid = (glxc->pFBConfig ? glxc->pFBConfig->id :
-		                     pReadGlxPixmap->pGlxVisual->vid );
-		new_reply.readType = GLX_PIXMAP_TYPE;
-
-	    }
-	}
-
-	if (!pReadDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	   pGlxReadWindow = (__glXWindow *)
-                                LookupIDByType(readId, __glXWindowRes);
-            if (pGlxReadWindow) {
-                /*
-                ** Drawable is a GLXWindow.
-                **
-                ** Check if GLX window and context are similar.
-                */
-                if (pGlxReadWindow->pScreen != glxc->pScreen ||
-                    pGlxReadWindow->pGlxFBConfig != glxc->pFBConfig) {
-                    client->errorValue = readId;
-                    return BadMatch;
-                }
-
-                pReadDraw = pGlxReadWindow->pDraw;
-                new_reply.readVid = pGlxReadWindow->pGlxFBConfig->id;
-                new_reply.readType = GLX_GLXWINDOW_TYPE;
-            }
-	}
-
-	if (!pReadDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	   pGlxReadPbuffer = (__glXPbuffer *)LookupIDByType(readId, __glXPbufferRes);
-	   if (pGlxReadPbuffer) {
-                if (pGlxReadPbuffer->pScreen != glxc->pScreen ||
-                    pGlxReadPbuffer->pFBConfig != glxc->pFBConfig) {
-                    client->errorValue = drawId;
-                    return BadMatch;
-                }
-
-		pReadDraw = (DrawablePtr)pGlxReadPbuffer;
-                new_reply.readVid = pGlxReadPbuffer->pFBConfig->id;
-                new_reply.readType = GLX_PBUFFER_TYPE;
-	   }
-	}
-
-	if (!pReadDraw) {
-	   /*
-    	    ** Drawable is neither a Window nor a GLXPixmap.
-	    */
-	   client->errorValue = readId;
-	   return __glXBadDrawable;
-	}
-
-    } else {
-	pReadDraw = pDraw;
-	pReadGlxPixmap = pGlxPixmap;
-	pReadWin = pWin;
-	new_reply.readVid = new_reply.writeVid;
-	new_reply.readType = new_reply.writeType;
-    }
-
-    if (prevglxc) {
-
-	if (prevglxc->pGlxPixmap) {
-	    /*
-	    ** The previous drawable was a glx pixmap, release it.
-	    */
-	    prevglxc->pGlxPixmap->refcnt--;
-	    __glXFreeGLXPixmap( prevglxc->pGlxPixmap );
-	    prevglxc->pGlxPixmap = 0;
-	}
-
-	if (prevglxc->pGlxReadPixmap) {
-	    /*
-	    ** The previous drawable was a glx pixmap, release it.
-	    */
-	    prevglxc->pGlxReadPixmap->refcnt--;
-	    __glXFreeGLXPixmap( prevglxc->pGlxReadPixmap );
-	    prevglxc->pGlxReadPixmap = 0;
-	}
-
-	if (prevglxc->pGlxWindow) {
-	    /*
-	    ** The previous drawable was a glx window, release it.
-	    */
-	    prevglxc->pGlxWindow->refcnt--;
-	    __glXFreeGLXWindow( prevglxc->pGlxWindow );
-	    prevglxc->pGlxWindow = 0;   
-	}
-
-	if (prevglxc->pGlxReadWindow) {
-	    /*
-	    ** The previous drawable was a glx window, release it.
-	    */
-	    prevglxc->pGlxReadWindow->refcnt--;
-	    __glXFreeGLXWindow( prevglxc->pGlxReadWindow );
-	    prevglxc->pGlxReadWindow = 0;   
-	}
-
-	if (prevglxc->pGlxPbuffer) {
-	    /*
-	    ** The previous drawable was a glx Pbuffer, release it.
-	    */
-	    prevglxc->pGlxPbuffer->refcnt--;
-	    __glXFreeGLXPbuffer( prevglxc->pGlxPbuffer );
-	    prevglxc->pGlxPbuffer = 0;   
-	}
-
-	if (prevglxc->pGlxReadPbuffer) {
-	    /*
-	    ** The previous drawable was a glx Pbuffer, release it.
-	    */
-	    prevglxc->pGlxReadPbuffer->refcnt--;
-	    __glXFreeGLXPbuffer( prevglxc->pGlxReadPbuffer );
-	    prevglxc->pGlxReadPbuffer = 0;   
-	}
-
-	ChangeCurrentContext(cl, glxc, tag);
-	ChangeCurrentContext(cl, glxc, tag);
-	StopUsingContext(prevglxc);
-    } else {
-	tag = AddCurrentContext(cl, glxc, pDraw);
-    }
-    if (glxc) {
-
-       glxc->pGlxPixmap = pGlxPixmap;
-       glxc->pGlxReadPixmap = pReadGlxPixmap;
-       glxc->pGlxWindow = pGlxWindow;
-       glxc->pGlxReadWindow = pGlxReadWindow;
-       glxc->pGlxPbuffer = pGlxPbuffer;
-       glxc->pGlxReadPbuffer = pGlxReadPbuffer;
-
-	if (pGlxPixmap) {
-	    pGlxPixmap->refcnt++;
-	}
-
-	if (pReadGlxPixmap) {
-	    pReadGlxPixmap->refcnt++;
-	}
-
-	if (pGlxWindow) {
-	   pGlxWindow->refcnt++;
-	}
-
-	if (pGlxReadWindow) {
-	   pGlxReadWindow->refcnt++;
-	}
-
-	if (pGlxPbuffer) {
-	   pGlxPbuffer->refcnt++;
-	}
-
-	if (pGlxReadPbuffer) {
-	   pGlxReadPbuffer->refcnt++;
-	}
-
-	StartUsingContext(cl, glxc);
-	new_reply.contextTag = tag;
-    } else {
-	new_reply.contextTag = 0;
-    }
-    new_reply.length = 0;
-    new_reply.type = X_Reply;
-    new_reply.sequenceNumber = client->sequence;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-
-       if (pDraw && new_reply.writeType != GLX_PBUFFER_TYPE) {
-	  pXinDraw = (PanoramiXRes *)
-	     SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);
-       }
-
-       if (pReadDraw && pReadDraw != pDraw && 
-	     new_reply.readType != GLX_PBUFFER_TYPE) {
-	  pXinReadDraw = (PanoramiXRes *)
-	     SecurityLookupIDByClass(client, pReadDraw->id, XRC_DRAWABLE, DixReadAccess);
-       }
-       else {
-	  pXinReadDraw = pXinDraw;
-       }
-    }
-#endif
-
-
-    /* send the MakeCurrent request to all required
-     * back-end servers.
-     */
-    for (s = from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-       unsigned int be_draw = None;
-       unsigned int be_read_draw = None;
-
-       if (pGlxPixmap) {
-	   be_draw = pGlxPixmap->be_xids[s];
-       }
-       else if (pGlxPbuffer) {
-	  be_draw = pGlxPbuffer->be_xids[s];
-       }
-#ifdef PANORAMIX
-       else if (pXinDraw) {
-	  dixLookupWindow(&pWin, pXinDraw->info[s].id, client, DixReadAccess);
-       }
-#endif
-       else if (pGlxWindow) {
-	  pWin = (WindowPtr)pGlxWindow->pDraw;
-       }
-
-       if (pWin && be_draw == None) {
-	   be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   if (!be_draw) {
-	      /* it might be that the window did not created yet on the */
-	      /* back-end server (lazy window creation option), force   */
-	      /* creation of the window */
-	      dmxCreateAndRealizeWindow( pWin, TRUE );
-	      be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   }
-       }
-
-       /*
-	* Before sending the MakeCurrent request - sync the
-	* X11 connection to the back-end servers to make sure
-	* that drawable is already created
-	*/
-       dmxSync( dmxScreen, 1 ); 
-
-       if (drawId == readId) {
-	  LockDisplay(dpy);
-	  GetReq(GLXMakeCurrent, be_req);
-	  be_req->reqType = dmxScreen->glxMajorOpcode;
-	  be_req->glxCode = X_GLXMakeCurrent;
-	  be_req->drawable = be_draw;
-	  be_req->context = (unsigned int)(glxc ? glxc->real_ids[s-from_screen] : 0);
-	  be_req->oldContextTag = GetCurrentBackEndTag(cl, tag, s);
-	  if (!_XReply(dpy, (xReply *) &be_reply, 0, False)) {
-
-	     /* The make current failed */
-	     UnlockDisplay(dpy);
-	     SyncHandle();
-	     return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );
-	  }
-
-	  UnlockDisplay(dpy);
-       	  SyncHandle();
-
-	  SetCurrentBackEndTag( cl, tag, s, be_reply.contextTag );
-       }
-       else {
-
-	  if (pReadGlxPixmap) {
-	     be_read_draw = pReadGlxPixmap->be_xids[s];
-	  }
-	  else if (pGlxReadPbuffer) {
-	     be_read_draw = pGlxReadPbuffer->be_xids[s];
-	  }
-#ifdef PANORAMIX
-	  else if (pXinReadDraw) {
-	     dixLookupWindow(&pReadWin, pXinReadDraw->info[s].id, client,
-			     DixReadAccess);
-   	  }
-#endif
-	  else if (pGlxReadWindow) {
-	     pReadWin = (WindowPtr)pGlxReadWindow->pDraw;
-	  }
-
-      	  if (pReadWin && be_read_draw == None) {
-  	     be_read_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pReadWin))->window;
-	   if (!be_read_draw) {
-	      /* it might be that the window did not created yet on the */
-	      /* back-end server (lazy window creation option), force   */
-	      /* creation of the window */
-	      dmxCreateAndRealizeWindow( pReadWin, TRUE );
-	      be_read_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pReadWin))->window;
-              dmxSync( dmxScreen, 1 ); 
-	   }
-     	  }
-
-	  if ( __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-	     LockDisplay(dpy);
-	     GetReq(GLXMakeContextCurrent, be_new_req);
-	     be_new_req->reqType = dmxScreen->glxMajorOpcode;
-	     be_new_req->glxCode = X_GLXMakeContextCurrent;
-	     be_new_req->drawable = be_draw;
-	     be_new_req->readdrawable = be_read_draw;
-	     be_new_req->context = (unsigned int)(glxc ? glxc->real_ids[s-from_screen] : 0);
-	     be_new_req->oldContextTag = GetCurrentBackEndTag(cl, tag, s);
-	     if (!_XReply(dpy, (xReply *) &be_new_reply, 0, False)) {
-
-		/* The make current failed */
-		UnlockDisplay(dpy);
-   		SyncHandle();
-   		return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );
-   	     }
-
-   	     UnlockDisplay(dpy);
-      	     SyncHandle();
-
-   	     SetCurrentBackEndTag( cl, tag, s, be_new_reply.contextTag );
-	  }
-	  else if (glxIsExtensionSupported("GLX_SGI_make_current_read")) {
-	     xGLXMakeCurrentReadSGIReq *ext_req;
-	     xGLXVendorPrivateWithReplyReq *vpreq;
-             xGLXMakeCurrentReadSGIReply ext_reply;
-
-	     LockDisplay(dpy);
-	     GetReqExtra(GLXVendorPrivateWithReply, 
-		         sz_xGLXMakeCurrentReadSGIReq - sz_xGLXVendorPrivateWithReplyReq,
-		         vpreq);
-	     ext_req = (xGLXMakeCurrentReadSGIReq *)vpreq;
-	     ext_req->reqType = dmxScreen->glxMajorOpcode;
-	     ext_req->glxCode = X_GLXVendorPrivateWithReply;
-	     ext_req->vendorCode = X_GLXvop_MakeCurrentReadSGI;
-	     ext_req->drawable = be_draw;
-	     ext_req->readable = be_read_draw;
-	     ext_req->context = (unsigned int)(glxc ? glxc->real_ids[s-from_screen] : 0);
-	     ext_req->oldContextTag = GetCurrentBackEndTag(cl, tag, s);
-	     if (!_XReply(dpy, (xReply *) &ext_reply, 0, False)) {
-
-		/* The make current failed */
-		UnlockDisplay(dpy);
-   		SyncHandle();
-   		return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );
-   	     }
-
-   	     UnlockDisplay(dpy);
-      	     SyncHandle();
-
-   	     SetCurrentBackEndTag( cl, tag, s, ext_reply.contextTag );
-
-	  }
-	  else {
-	     return BadMatch;
-	  }
-       }
-
-       XFlush( dpy );
-    }
-
-    if (client->swapped) {
-	__glXSwapMakeCurrentReply(client, &new_reply);
-    } else {
-	WriteToClient(client, sz_xGLXMakeContextCurrentReply, (char *)&new_reply);
-    }
-
-    return Success;
-}
-
-int __glXMakeCurrent(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;
-
-    return( MakeCurrent(cl, req->drawable, req->drawable,
-	                req->context, req->oldContextTag ) );
-}
-
-int __glXMakeContextCurrent(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc;
-
-    return( MakeCurrent(cl, req->drawable, req->readdrawable,
-	                req->context, req->oldContextTag ) );
-}
-
-int __glXMakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc;
-
-    return( MakeCurrent(cl, req->drawable, req->readable,
-	                req->context, req->oldContextTag ) );
-}
-
-int __glXIsDirect(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;
-    xGLXIsDirectReply reply;
-    __GLXcontext *glxc;
-
-    /*
-    ** Find the GL context.
-    */
-    glxc = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);
-    if (!glxc) {
-	client->errorValue = req->context;
-	return __glXBadContext;
-    }
-
-    reply.isDirect = 0;
-    reply.length = 0;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-	__glXSwapIsDirectReply(client, &reply);
-    } else {
-	WriteToClient(client, sz_xGLXIsDirectReply, (char *)&reply);
-    }
-
-    return Success;
-}
-
-int __glXQueryVersion(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-/*    xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc; */
-    xGLXQueryVersionReply reply;
-
-    /*
-    ** Server should take into consideration the version numbers sent by the
-    ** client if it wants to work with older clients; however, in this
-    ** implementation the server just returns its version number.
-    */
-    reply.majorVersion = __glXVersionMajor;
-    reply.minorVersion = __glXVersionMinor;
-    reply.length = 0;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-	__glXSwapQueryVersionReply(client, &reply);
-    } else {
-	WriteToClient(client, sz_xGLXQueryVersionReply, (char *)&reply);
-    }
-    return Success;
-}
-
-int __glXWaitGL(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;
-    xGLXWaitGLReq *be_req = (xGLXWaitGLReq *)pc;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-    __GLXcontext *glxc = NULL;
-    
-    if (req->contextTag != 0) {
-	glxc = __glXLookupContextByTag(cl, req->contextTag);
-	if (glxc) {
-	   from_screen = to_screen = glxc->pScreen->myNum;
-	}
-    }
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReq(GLXWaitGL,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXWaitGL;
-       be_req->contextTag = (glxc ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-       XSync(dpy, False);
-    }
-    
-    return Success;
-}
-
-int __glXWaitX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXWaitXReq *req = (xGLXWaitXReq *)pc;
-    xGLXWaitXReq *be_req;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-    __GLXcontext *glxc = NULL;
-    
-    if (req->contextTag != 0) {
-	glxc = __glXLookupContextByTag(cl, req->contextTag);
-	if (glxc) {
-	   from_screen = to_screen = glxc->pScreen->myNum;
-	}
-    }
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       dmxSync( dmxScreen, 1 );
-
-       LockDisplay(dpy);
-       GetReq(GLXWaitX,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXWaitX;
-       be_req->contextTag = (glxc ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-       XFlush( dpy );
-    }
-
-    return Success;
-}
-
-int __glXCopyContext(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXCopyContextReq *be_req;
-    xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc;
-    GLXContextID source = req->source;
-    GLXContextID dest = req->dest;
-    GLXContextTag tag = req->contextTag;
-    unsigned long mask = req->mask;
-    __GLXcontext *src, *dst;
-    int s;
-    int from_screen = 0;
-    int to_screen = 0;
-
-    /*
-    ** Check that each context exists.
-    */
-    src = (__GLXcontext *) LookupIDByType(source, __glXContextRes);
-    if (!src) {
-	client->errorValue = source;
-	return __glXBadContext;
-    }
-    dst = (__GLXcontext *) LookupIDByType(dest, __glXContextRes);
-    if (!dst) {
-	client->errorValue = dest;
-	return __glXBadContext;
-    }
-
-    /*
-    ** They must be in the same address space, and same screen.
-    */
-    if (src->pGlxScreen != dst->pGlxScreen) {
-	client->errorValue = source;
-	return BadMatch;
-    }
-
-    /*
-    ** The destination context must not be current for any client.
-    */
-    if (dst->isCurrent) {
-	client->errorValue = dest;
-	return BadAccess;
-    }
-
-    if (tag) {
-	__GLXcontext *tagcx = __glXLookupContextByTag(cl, tag);
-	
-	if (!tagcx) {
-	    return __glXBadContextTag;
-	}
-	if (tagcx != src) {
-	    /*
-	    ** This would be caused by a faulty implementation of the client
-	    ** library.
-	    */
-	    return BadMatch;
-	}
-    }
-
-    from_screen = to_screen = src->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReq(GLXCopyContext,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXCopyContext;
-       be_req->source = (unsigned int)src->real_ids[s-from_screen];
-       be_req->dest = (unsigned int)dst->real_ids[s-from_screen];
-       be_req->mask = mask;
-       be_req->contextTag = (tag ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);
-       UnlockDisplay(dpy);
-       SyncHandle();
-    }
-
-    return Success;
-}
-
-int __glXGetVisualConfigs(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;
-    xGLXGetVisualConfigsReply reply;
-    __GLXscreenInfo *pGlxScreen;
-    __GLXvisualConfig *pGlxVisual;
-    CARD32 buf[__GLX_TOTAL_CONFIG];
-    unsigned int screen;
-    int i, p;
-
-    screen = req->screen;
-    if (screen > screenInfo.numScreens) {
-	/* The client library must send a valid screen number. */
-	client->errorValue = screen;
-	return BadValue;
-    }
-    pGlxScreen = &__glXActiveScreens[screen];
-
-    reply.numVisuals = pGlxScreen->numGLXVisuals;
-    reply.numProps = __GLX_TOTAL_CONFIG;
-    reply.length = (pGlxScreen->numGLXVisuals * __GLX_SIZE_CARD32 *
-		    __GLX_TOTAL_CONFIG) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply);
-
-    for (i=0; i < pGlxScreen->numVisuals; i++) {
-	pGlxVisual = &pGlxScreen->pGlxVisual[i];
-	if (!pGlxScreen->isGLXvis[i] || pGlxVisual->vid == 0) {
-	    /* not a usable visual */
-	    continue;
-	}
-	p = 0;
-	buf[p++] = pGlxVisual->vid;
-	buf[p++] = pGlxVisual->class;
-	buf[p++] = pGlxVisual->rgba;
-
-	buf[p++] = pGlxVisual->redSize;
-	buf[p++] = pGlxVisual->greenSize;
-	buf[p++] = pGlxVisual->blueSize;
-	buf[p++] = pGlxVisual->alphaSize;
-	buf[p++] = pGlxVisual->accumRedSize;
-	buf[p++] = pGlxVisual->accumGreenSize;
-	buf[p++] = pGlxVisual->accumBlueSize;
-	buf[p++] = pGlxVisual->accumAlphaSize;
-
-	buf[p++] = pGlxVisual->doubleBuffer;
-	buf[p++] = pGlxVisual->stereo;
-
-	buf[p++] = pGlxVisual->bufferSize;
-	buf[p++] = pGlxVisual->depthSize;
-	buf[p++] = pGlxVisual->stencilSize;
-	buf[p++] = pGlxVisual->auxBuffers;
-	buf[p++] = pGlxVisual->level;
-	/* 
-	** Add token/value pairs for extensions.
-	*/
-	buf[p++] = GLX_VISUAL_CAVEAT_EXT;
-	buf[p++] = pGlxVisual->visualRating;
-	buf[p++] = GLX_TRANSPARENT_TYPE_EXT;
-	buf[p++] = pGlxVisual->transparentPixel;
-	buf[p++] = GLX_TRANSPARENT_RED_VALUE_EXT;
-	buf[p++] = pGlxVisual->transparentRed;
-	buf[p++] = GLX_TRANSPARENT_GREEN_VALUE_EXT;
-	buf[p++] = pGlxVisual->transparentGreen;
-	buf[p++] = GLX_TRANSPARENT_BLUE_VALUE_EXT;
-	buf[p++] = pGlxVisual->transparentBlue;
-	buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE_EXT;
-	buf[p++] = pGlxVisual->transparentAlpha;
-	buf[p++] = GLX_TRANSPARENT_INDEX_VALUE_EXT;
-	buf[p++] = pGlxVisual->transparentIndex;
-	buf[p++] = GLX_SAMPLES_SGIS;
-	buf[p++] = pGlxVisual->multiSampleSize;
-	buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;
-	buf[p++] = pGlxVisual->nMultiSampleBuffers;
-	buf[p++] = GLX_VISUAL_SELECT_GROUP_SGIX;
-	buf[p++] = pGlxVisual->visualSelectGroup;
-
-	WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG, 
-		(char *)buf);
-    }
-    return Success;
-}
-
-/*
-** Create a GLX Pixmap from an X Pixmap.
-*/
-static int CreateGLXPixmap(__GLXclientState *cl,
-                    VisualID visual, GLXFBConfigID fbconfigId,
-		    int screenNum, XID pixmapId, XID glxpixmapId )
-{
-    ClientPtr client = cl->client;
-    xGLXCreateGLXPixmapReq *be_req;
-    xGLXCreatePixmapReq *be_new_req;
-    DrawablePtr pDraw;
-    ScreenPtr pScreen;
-    VisualPtr pVisual;
-    __GLXpixmap *pGlxPixmap;
-    __GLXscreenInfo *pGlxScreen;
-    __GLXvisualConfig *pGlxVisual;
-    __GLXFBConfig *pFBConfig;
-    int i, s, rc;
-    int from_screen, to_screen;
-#ifdef PANORAMIX
-    PanoramiXRes *pXinDraw = NULL;
-#endif
-
-    rc = dixLookupDrawable(&pDraw, pixmapId, client, M_DRAWABLE_PIXMAP,
-			   DixAddAccess);
-    if (rc != Success)
-	return rc;
-
-    /*
-    ** Check if screen of visual matches screen of pixmap.
-    */
-    pScreen = pDraw->pScreen;
-    if (screenNum != pScreen->myNum) {
-	return BadMatch;
-    }
-
-    if (fbconfigId == NULL && visual == NULL) {
-	  return BadValue;
-    }
-
-    if (fbconfigId != None) {
-       pFBConfig = glxLookupFBConfig( fbconfigId );
-       if (!pFBConfig) {
-	  client->errorValue = fbconfigId;
-	  return BadValue;
-       }
-       visual = pFBConfig->associatedVisualId;
-    }
-    else {
-       pFBConfig = NULL;
-    }
-
-    if (visual != None) {
-       /*
-	** Find the VisualRec for this visual.
-	*/
-       pVisual = pScreen->visuals;
-       for (i=0; i < pScreen->numVisuals; i++, pVisual++) {
-	  if (pVisual->vid == visual) {
-	     break;
-	  }
-       }
-       if (i == pScreen->numVisuals) {
-	  client->errorValue = visual;
-	  return BadValue;
-       }
-       /*
-	** Check if depth of visual matches depth of pixmap.
-	*/
-       if (pVisual->nplanes != pDraw->depth) {
-	  client->errorValue = visual;
-	  return BadMatch;
-       }
-
-       /*
-	** Get configuration of the visual.
-	*/
-       pGlxScreen = &__glXActiveScreens[screenNum];
-       pGlxVisual = pGlxScreen->pGlxVisual;
-       for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {
-	  if (pGlxVisual->vid == visual) {
-	     break;
-	  }
-       }
-       if (i == pGlxScreen->numVisuals) {
-	  /*
-	   ** Visual not support on this screen by this OpenGL implementation.
-	   */
-	  client->errorValue = visual;
-	  return BadValue;
-       }
-
-
-       /* find the FBConfig for that visual (if any) */
-       if ( pFBConfig == NULL ) {
-	   pFBConfig = glxLookupFBConfigByVID( visual );
-
-	   if ( pFBConfig == NULL ) {
-	      /*
-               * visual does not have an FBConfig ???
-	      client->errorValue = visual;
-	      return BadValue;
-	       */
-	   }
-       }
-    }
-    else {
-       pVisual = NULL;
-       pGlxVisual = NULL;
-    }
-
-    pGlxPixmap = (__GLXpixmap *) __glXMalloc(sizeof(__GLXpixmap));
-    if (!pGlxPixmap) {
-	return BadAlloc;
-    }
-    pGlxPixmap->be_xids = (XID *) __glXMalloc(sizeof(XID) * screenInfo.numScreens);
-    if (!pGlxPixmap->be_xids) {
-        __glXFree( pGlxPixmap );
-	return BadAlloc;
-    }
-
-    pGlxPixmap->pDraw = pDraw;
-    pGlxPixmap->pGlxScreen = pGlxScreen;
-    pGlxPixmap->pGlxVisual = pGlxVisual;
-    pGlxPixmap->pFBConfig = pFBConfig;
-    pGlxPixmap->pScreen = pScreen;
-    pGlxPixmap->idExists = True;
-    pGlxPixmap->refcnt = 0;
-
-    /*
-    ** Bump the ref count on the X pixmap so it won't disappear.
-    */
-    ((PixmapPtr) pDraw)->refcnt++;
-
-    /*
-     * send the request to the back-end server(s)
-     */
-    from_screen = to_screen = screenNum;
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-
-       pXinDraw = (PanoramiXRes *)
-	  SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-       Pixmap  be_pixmap;
-       DrawablePtr pRealDraw = pDraw;
-
-#ifdef PANORAMIX
-       if (pXinDraw) {
-	   dixLookupDrawable(&pRealDraw, pXinDraw->info[s].id, client, 0,
-			     DixAddAccess);
-       }
-#endif
-
-       be_pixmap = (DMX_GET_PIXMAP_PRIV((PixmapPtr)pRealDraw))->pixmap;
-
-       /* make sure pixmap already created on back-end */
-       dmxSync( dmxScreen, 1 );
-
-       if ( pFBConfig && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-       	  __GLXFBConfig *be_FBConfig = glxLookupBackEndFBConfig( pFBConfig->id, s );
-	  
-	  LockDisplay(dpy);
-	  pGlxPixmap->be_xids[s] = XAllocID(dpy);
-	  GetReq(GLXCreatePixmap,be_new_req);
-	  be_new_req->reqType = dmxScreen->glxMajorOpcode;
-	  be_new_req->glxCode = X_GLXCreatePixmap;
-	  be_new_req->screen = DefaultScreen(dpy);
-	  be_new_req->fbconfig = be_FBConfig->id;
-	  be_new_req->pixmap = (unsigned int)be_pixmap;
-	  be_new_req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];
-	  be_new_req->numAttribs = 0;
-	  UnlockDisplay(dpy);
-	  SyncHandle();
-       }
-       else if (pFBConfig && glxIsExtensionSupported("GLX_SGIX_fbconfig")) {
-	  __GLXFBConfig *be_FBConfig = glxLookupBackEndFBConfig( pFBConfig->id, s );
-	  xGLXCreateGLXPixmapWithConfigSGIXReq *ext_req;
-	  xGLXVendorPrivateReq *vpreq;
-	  
-	  LockDisplay(dpy);
-	  pGlxPixmap->be_xids[s] = XAllocID(dpy);
-	  GetReqExtra(GLXVendorPrivate,
-		      sz_xGLXCreateGLXPixmapWithConfigSGIXReq-sz_xGLXVendorPrivateReq,
-		      vpreq);
-	  ext_req = (xGLXCreateGLXPixmapWithConfigSGIXReq *)vpreq;
-	  ext_req->reqType = dmxScreen->glxMajorOpcode;
-	  ext_req->glxCode = X_GLXVendorPrivate;
-	  ext_req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
-	  ext_req->screen = DefaultScreen(dpy);
-	  ext_req->fbconfig = be_FBConfig->id;
-	  ext_req->pixmap = (unsigned int)be_pixmap;
-	  ext_req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];
-	  UnlockDisplay(dpy);
-	  SyncHandle();
-       }
-       else if (pGlxVisual) {
-	  LockDisplay(dpy);
-	  pGlxPixmap->be_xids[s] = XAllocID(dpy);
-	  GetReq(GLXCreateGLXPixmap,be_req);
-	  be_req->reqType = dmxScreen->glxMajorOpcode;
-	  be_req->glxCode = X_GLXCreateGLXPixmap;
-	  be_req->screen = DefaultScreen(dpy);
-	  be_req->visual = (unsigned int)glxMatchGLXVisualInConfigList( 
-	 	pGlxVisual,
-		dmxScreen->glxVisuals,
-		dmxScreen->numGlxVisuals );
-   	  be_req->pixmap = (unsigned int)be_pixmap;
-      	  be_req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];
-	  UnlockDisplay(dpy);
-	  SyncHandle();
-       }
-       else {
-	  client->errorValue = ( visual ? visual : fbconfigId );
-          __glXFree( pGlxPixmap );
-	  return BadValue;
-       }
-
-       XFlush( dpy );
-    }
-
-    if (!(AddResource(glxpixmapId, __glXPixmapRes, pGlxPixmap))) {
-        __glXFree( pGlxPixmap );
-	return BadAlloc;
-    }
-
-    return Success;
-}
-
-int __glXCreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;
-
-    return( CreateGLXPixmap(cl, req->visual, None,
-	                    req->screen, req->pixmap, req->glxpixmap) );
-}
-
-int __glXCreatePixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc;
-
-    return( CreateGLXPixmap(cl, None, req->fbconfig,
-	                    req->screen, req->pixmap, req->glxpixmap) );
-}
-
-int __glXDestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;
-    XID glxpixmap = req->glxpixmap;
-    __GLXpixmap *pGlxPixmap;
-    int s;
-    int from_screen, to_screen;
-
-    /*
-    ** Check if it's a valid GLX pixmap.
-    */
-    pGlxPixmap = (__GLXpixmap *)LookupIDByType(glxpixmap, __glXPixmapRes);
-    if (!pGlxPixmap) {
-	client->errorValue = glxpixmap;
-	return __glXBadPixmap;
-    }
-    FreeResource(glxpixmap, FALSE);
-
-    /*
-     * destroy the pixmap on the back-end server(s).
-     */
-    from_screen = to_screen = pGlxPixmap->pDraw->pScreen->myNum;
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       /* make sure pixmap exist in back-end */
-       dmxSync( dmxScreen, 1 );
-
-       LockDisplay(dpy);
-       GetReq(GLXDestroyGLXPixmap,req);
-       req->reqType = dmxScreen->glxMajorOpcode;
-       req->glxCode = X_GLXDestroyGLXPixmap;
-       req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];
-       UnlockDisplay(dpy);
-       SyncHandle();
-    }
-
-    
-    return Success;
-}
-
-/*****************************************************************************/
-
-/*
-** NOTE: There is no portable implementation for swap buffers as of
-** this time that is of value.  Consequently, this code must be
-** implemented by somebody other than SGI.
-*/
-int __glXDoSwapBuffers(__GLXclientState *cl, XID drawId, GLXContextTag tag)
-{
-    ClientPtr client = cl->client;
-    DrawablePtr pDraw;
-    xGLXSwapBuffersReq *be_req;
-    WindowPtr pWin = NULL;
-    __GLXpixmap *pGlxPixmap = NULL;
-    __GLXcontext *glxc = NULL;
-#ifdef PANORAMIX
-    PanoramiXRes *pXinDraw = NULL;
-#endif
-    __glXWindow *pGlxWindow = NULL;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s, rc;
-    
-    /*
-    ** Check that the GLX drawable is valid.
-    */
-    rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixWriteAccess);
-    if (rc == Success) {
-        from_screen = to_screen = pDraw->pScreen->myNum;
-
-	if (pDraw->type == DRAWABLE_WINDOW) {
-	    /*
-	    ** Drawable is an X window.
-	    */
-	   pWin = (WindowPtr)pDraw;
-	} else {
-	    /*
-	    ** Drawable is an X pixmap, which is not allowed.
-	    */
-	    client->errorValue = drawId;
-	    return __glXBadDrawable;
-	}
-    } 
-
-    if (!pDraw) {
-	pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
-						    __glXPixmapRes);
-	if (pGlxPixmap) {
-	    /*
-	    ** Drawable is a GLX pixmap.
-	    */
-	   pDraw = pGlxPixmap->pDraw;
-	   from_screen = to_screen = pGlxPixmap->pScreen->myNum;
-	}
-    }
-
-    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-       pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);
-       if (pGlxWindow) {
-	  /*
-	   ** Drawable is a GLXWindow.
-	   */
-	  pDraw = pGlxWindow->pDraw;
-	  from_screen = to_screen = pGlxWindow->pScreen->myNum;
-       }
-    }
-
-    if (!pDraw) {
-       /*
-	** Drawable is neither a X window nor a GLX pixmap.
-	*/
-       client->errorValue = drawId;
-       return __glXBadDrawable;
-    }
-
-    if (tag) {
-	glxc = __glXLookupContextByTag(cl, tag);
-	if (!glxc) {
-	    return __glXBadContextTag;
-	}
-    }
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-       pXinDraw = (PanoramiXRes *)
-        SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);
-    }
-#endif
-
-    /* If requested, send a glFinish to all back-end servers before swapping. */
-    if (dmxGLXFinishSwap) {
-	for (s=from_screen; s<=to_screen; s++) {
-	    Display *dpy = GetBackEndDisplay(cl,s);
-	    DMXScreenInfo *dmxScreen = &dmxScreens[s];
-	    xGLXSingleReq *finishReq;
-	    xGLXSingleReply reply;
-
-#define X_GLXSingle 0    /* needed by GetReq below */
-
-	    LockDisplay(dpy);
-	    GetReq(GLXSingle,finishReq);
-	    finishReq->reqType = dmxScreen->glxMajorOpcode;
-	    finishReq->glxCode = X_GLsop_Finish;
-	    finishReq->contextTag = (tag ? GetCurrentBackEndTag(cl,tag,s) : 0);
-	    (void) _XReply(dpy, (xReply*) &reply, 0, False);
-	    UnlockDisplay(dpy);
-	    SyncHandle();
-	}
-    }
-
-    /* If requested, send an XSync to all back-end servers before swapping. */
-    if (dmxGLXSyncSwap) {
-	for (s=from_screen; s<=to_screen; s++)
-	    XSync(GetBackEndDisplay(cl,s), False);
-    }
-
-
-    /* send the SwapBuffers request to all back-end servers */
-
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-       unsigned int be_draw = 0;
-
-       if (pGlxPixmap) {
-	  be_draw = (unsigned int)pGlxPixmap->be_xids[s];
-       }
-#ifdef PANORAMIX
-       else if (pXinDraw) {
-	  dixLookupWindow(&pWin, pXinDraw->info[s].id, client, DixReadAccess);
-       }
-#endif
-       else if (pGlxWindow) {
-	  pWin = (WindowPtr)pGlxWindow->pDraw;
-       }
-
-       if (pWin && !be_draw) {
-	   be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   if (!be_draw) {
-	      /* it might be that the window did not created yet on the */
-	      /* back-end server (lazy window creation option), force   */
-	      /* creation of the window */
-	      dmxCreateAndRealizeWindow( pWin, TRUE );
-	      be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   }
-       }
-
-       dmxSync( dmxScreen, 1 );
-
-       LockDisplay(dpy);
-       GetReq(GLXSwapBuffers,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXSwapBuffers;
-       be_req->drawable = be_draw;
-       be_req->contextTag = ( tag ? GetCurrentBackEndTag(cl,tag,s) : 0 );
-       UnlockDisplay(dpy);
-       SyncHandle();
-       XFlush(dpy);
-    }
-
-    return Success;
-}
-
-int __glXSwapBuffers(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    DrawablePtr pDraw;
-    xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;
-    GLXContextTag tag = req->contextTag;
-    XID drawId = req->drawable;
-    __GLXpixmap *pGlxPixmap = NULL;
-    __GLXcontext *glxc = NULL;
-    __glXWindow *pGlxWindow = NULL;
-    int rc;
-    
-    /*
-    ** Check that the GLX drawable is valid.
-    */
-    rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixWriteAccess);
-    if (rc == Success) {
-	if (pDraw->type != DRAWABLE_WINDOW) {
-	    /*
-	    ** Drawable is an X pixmap, which is not allowed.
-	    */
-	    client->errorValue = drawId;
-	    return __glXBadDrawable;
-	}
-    } 
-
-    if (!pDraw) {
-	pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
-						    __glXPixmapRes);
-	if (pGlxPixmap) {
-	    /*
-	    ** Drawable is a GLX pixmap.
-	    */
-	   pDraw = pGlxPixmap->pDraw;
-	}
-    }
-
-    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {
-       pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);
-       if (pGlxWindow) {
-	  /*
-	   ** Drawable is a GLXWindow.
-	   */
-	  pDraw = pGlxWindow->pDraw;
-       }
-    }
-
-    if (!pDraw) {
-       /*
-	** Drawable is neither a X window nor a GLX pixmap.
-	*/
-       client->errorValue = drawId;
-       return __glXBadDrawable;
-    }
-
-    if (tag) {
-	glxc = __glXLookupContextByTag(cl, tag);
-	if (!glxc) {
-	    return __glXBadContextTag;
-	}
-    }
-
-    if (pDraw &&
-	pDraw->type == DRAWABLE_WINDOW &&
-	DMX_GET_WINDOW_PRIV((WindowPtr)pDraw)->swapGroup) {
-	return SGSwapBuffers(cl, drawId, tag, pDraw);
-    }
-
-    return __glXDoSwapBuffers(cl, drawId, tag);
-}
-
-
-/************************************************************************/
-
-/*
-** Render and Renderlarge are not in the GLX API.  They are used by the GLX
-** client library to send batches of GL rendering commands.
-*/
-
-/*
-** Execute all the drawing commands in a request.
-*/
-int __glXRender(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXRenderReq *req;
-    xGLXRenderReq *be_req;
-    int size;
-    __GLXcontext *glxc;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-
-    /*
-    ** NOTE: much of this code also appears in the byteswapping version of this
-    ** routine, __glXSwapRender().  Any changes made here should also be
-    ** duplicated there.
-    */
-    
-    req = (xGLXRenderReq *) pc;
-
-    glxc = __glXLookupContextByTag(cl, req->contextTag);
-    if (!glxc) {
-	return 0;
-    }
-    from_screen = to_screen = glxc->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    pc += sz_xGLXRenderReq;
-    size = (req->length << 2) - sz_xGLXRenderReq;
-
-    /*
-     * just forward the request to back-end server(s)
-     */
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReq(GLXRender,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXRender;
-       be_req->length = req->length;
-       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);
-       _XSend(dpy, (const char *)pc, size);
-       UnlockDisplay(dpy);
-       SyncHandle();
-    }
-
-    return Success;
-}
-
-/*
-** Execute a large rendering request (one that spans multiple X requests).
-*/
-int __glXRenderLarge(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXRenderLargeReq *req;
-    xGLXRenderLargeReq *be_req;
-    __GLXcontext *glxc;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-
-    /*
-    ** NOTE: much of this code also appears in the byteswapping version of this
-    ** routine, __glXSwapRenderLarge().  Any changes made here should also be
-    ** duplicated there.
-    */
-    
-    req = (xGLXRenderLargeReq *) pc;
-    glxc = __glXLookupContextByTag(cl, req->contextTag);
-    if (!glxc) {
-	return 0;
-    }
-    from_screen = to_screen = glxc->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    pc += sz_xGLXRenderLargeReq;
-
-    /*
-     * just forward the request to back-end server(s)
-     */
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       GetReq(GLXRenderLarge,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXRenderLarge;
-       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);
-       be_req->length = req->length;
-       be_req->requestNumber = req->requestNumber;
-       be_req->requestTotal = req->requestTotal;
-       be_req->dataBytes = req->dataBytes;
-       Data(dpy, (const char *)pc, req->dataBytes);
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-    }
-
-    return Success;
-}
-
-
-/************************************************************************/
-
-int __glXVendorPrivate(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateReq *req;
-
-    req = (xGLXVendorPrivateReq *) pc;
-
-    switch( req->vendorCode ) {
-
-       case X_GLvop_DeleteTexturesEXT:
-	  return __glXVForwardSingleReq( cl, pc );
-	  break;
-
-       case X_GLXvop_SwapIntervalSGI:
-	  if (glxIsExtensionSupported("SGI_swap_control")) {
-	     return __glXVForwardSingleReq( cl, pc );
-	  }
-	  else {
-	     return Success;
-	  }
-	  break;
-
-#if 0 /* glx 1.3 */
-       case X_GLXvop_CreateGLXVideoSourceSGIX:
-	  break;
-       case X_GLXvop_DestroyGLXVideoSourceSGIX:
-	  break;
-       case X_GLXvop_CreateGLXPixmapWithConfigSGIX:
-	  break;
-       case X_GLXvop_DestroyGLXPbufferSGIX:
-	  break;
-       case X_GLXvop_ChangeDrawableAttributesSGIX:
-	  break;
-#endif
-
-       case X_GLXvop_BindSwapBarrierSGIX:
-	  return __glXBindSwapBarrierSGIX( cl, pc );
-	  break;
-
-       case X_GLXvop_JoinSwapGroupSGIX:
-	  return __glXJoinSwapGroupSGIX( cl, pc );
-	  break;
-
-       case X_GLXvop_CreateContextWithConfigSGIX:
-	  return __glXCreateContextWithConfigSGIX( cl, pc );
-	  break;
-
-       default:
-	  /*
-	   ** unsupported private request
-	   */
-	  cl->client->errorValue = req->vendorCode;
-	  return __glXUnsupportedPrivateRequest;
-    }
-
-    cl->client->errorValue = req->vendorCode;
-    return __glXUnsupportedPrivateRequest;
-
-}
-
-int __glXVendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateWithReplyReq *req;
-
-    req = (xGLXVendorPrivateWithReplyReq *) pc;
-
-    switch( req->vendorCode ) {
-
-       case X_GLvop_GetConvolutionFilterEXT:
-       case X_GLvop_GetConvolutionParameterfvEXT:
-       case X_GLvop_GetConvolutionParameterivEXT:
-       case X_GLvop_GetSeparableFilterEXT:
-       case X_GLvop_GetHistogramEXT:
-       case X_GLvop_GetHistogramParameterivEXT:
-       case X_GLvop_GetMinmaxEXT:
-       case X_GLvop_GetMinmaxParameterfvEXT:
-       case X_GLvop_GetMinmaxParameterivEXT:
-       case X_GLvop_AreTexturesResidentEXT:
-       case X_GLvop_IsTextureEXT:
-	  return( __glXVForwardPipe0WithReply(cl, pc) );
-	  break;
-
-       case X_GLvop_GenTexturesEXT:
-	  return( __glXVForwardAllWithReply(cl, pc) );
-	  break;
-
-
-#if 0 /* glx1.3 */
-       case X_GLvop_GetDetailTexFuncSGIS:
-       case X_GLvop_GetSharpenTexFuncSGIS:
-       case X_GLvop_GetColorTableSGI:
-       case X_GLvop_GetColorTableParameterfvSGI:
-       case X_GLvop_GetColorTableParameterivSGI:
-       case X_GLvop_GetTexFilterFuncSGIS:
-       case X_GLvop_GetInstrumentsSGIX:
-       case X_GLvop_InstrumentsBufferSGIX:
-       case X_GLvop_PollInstrumentsSGIX:
-       case X_GLvop_FlushRasterSGIX:
-       case X_GLXvop_CreateGLXPbufferSGIX:
-       case X_GLXvop_GetDrawableAttributesSGIX:
-       case X_GLXvop_QueryHyperpipeNetworkSGIX:
-       case X_GLXvop_QueryHyperpipeConfigSGIX:
-       case X_GLXvop_HyperpipeConfigSGIX:
-       case X_GLXvop_DestroyHyperpipeConfigSGIX:
-#endif
-       case X_GLXvop_QueryMaxSwapBarriersSGIX:
-	  return( __glXQueryMaxSwapBarriersSGIX(cl, pc) );
-	  break;
-
-       case X_GLXvop_GetFBConfigsSGIX:
-	  return( __glXGetFBConfigsSGIX(cl, pc) );
-	  break;
-
-       case X_GLXvop_MakeCurrentReadSGI:
-	  return( __glXMakeCurrentReadSGI(cl, pc) );
-	  break;
-
-       case X_GLXvop_QueryContextInfoEXT:
-	  return( __glXQueryContextInfoEXT(cl,pc) );
-	  break;
-
-       default:
-	  /*
-	   ** unsupported private request
-	   */
-	  cl->client->errorValue = req->vendorCode;
-	  return __glXUnsupportedPrivateRequest;
-    }
-
-}
-
-int __glXQueryExtensionsString(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc;
-    xGLXQueryExtensionsStringReply reply;
-    GLint screen;
-    size_t length;
-    int len, numbytes;
-    char *be_buf;
-
-#ifdef FWD_QUERY_REQ
-    xGLXQueryExtensionsStringReq *be_req;
-    xGLXQueryExtensionsStringReply be_reply;
-    DMXScreenInfo *dmxScreen;
-    Display *dpy;
-    int slop;
-#endif
-
-    screen = req->screen;
-
-    /*
-    ** Check if screen exists.
-    */
-    if ((screen < 0) || (screen >= screenInfo.numScreens)) {
-	client->errorValue = screen;
-	return BadValue;
-    }
-
-#ifdef FWD_QUERY_REQ
-    dmxScreen = &dmxScreens[screen];
-
-    /* Send the glXQueryServerString request */
-    dpy = GetBackEndDisplay(cl,screen);
-    LockDisplay(dpy);
-    GetReq(GLXQueryExtensionsString,be_req);
-    be_req->reqType = dmxScreen->glxMajorOpcode;
-    be_req->glxCode = X_GLXQueryServerString;
-    be_req->screen = DefaultScreen(dpy);
-    _XReply(dpy, (xReply*) &be_reply, 0, False);
-    len = (int)be_reply.length;
-    numbytes = (int)be_reply.n;
-    slop = numbytes * __GLX_SIZE_INT8 & 3;
-    be_buf = (char *)Xalloc(numbytes);
-    if (!be_buf) {
-        /* Throw data on the floor */
-        _XEatData(dpy, len);
-    } else {
-        _XRead(dpy, (char *)be_buf, numbytes);
-        if (slop) _XEatData(dpy,4-slop);
-    }
-    UnlockDisplay(dpy);
-    SyncHandle();
-
-#else
-
-    be_buf = __glXGetServerString(GLX_EXTENSIONS);
-    numbytes = strlen(be_buf) + 1;
-    len = __GLX_PAD(numbytes) >> 2;
-
-#endif
-
-    length = len;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = len;
-    reply.n = numbytes;
-
-    if (client->swapped) {
-        glxSwapQueryExtensionsStringReply(client, &reply, be_buf);
-    } else {
-        WriteToClient(client, sz_xGLXQueryExtensionsStringReply,(char *)&reply);
-        WriteToClient(client, (int)(length << 2), (char *)be_buf);
-    }
-
-    return Success;
-}
-
-int __glXQueryServerString(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc;
-    xGLXQueryServerStringReply reply;
-    int name;
-    GLint screen;
-    size_t length;
-    int len, numbytes;
-    char *be_buf;
-#ifdef FWD_QUERY_REQ
-    xGLXQueryServerStringReq *be_req;
-    xGLXQueryServerStringReply be_reply;
-    DMXScreenInfo *dmxScreen;
-    Display *dpy;
-    int  slop;
-#endif
-
-    name = req->name;
-    screen = req->screen;
-    /*
-    ** Check if screen exists.
-    */
-    if ((screen < 0) || (screen >= screenInfo.numScreens)) {
-	client->errorValue = screen;
-	return BadValue;
-    }
-
-#ifdef FWD_QUERY_REQ
-    dmxScreen = &dmxScreens[screen];
-
-    /* Send the glXQueryServerString request */
-    dpy = GetBackEndDisplay(cl,screen);
-    LockDisplay(dpy);
-    GetReq(GLXQueryServerString,be_req);
-    be_req->reqType = dmxScreen->glxMajorOpcode;
-    be_req->glxCode = X_GLXQueryServerString;
-    be_req->screen = DefaultScreen(dpy);
-    be_req->name = name;
-    _XReply(dpy, (xReply*) &be_reply, 0, False);
-    len = (int)be_reply.length;
-    numbytes = (int)be_reply.n;
-    slop = numbytes * __GLX_SIZE_INT8 & 3;
-    be_buf = (char *)Xalloc(numbytes);
-    if (!be_buf) {
-        /* Throw data on the floor */
-        _XEatData(dpy, len);
-    } else {
-        _XRead(dpy, (char *)be_buf, numbytes);
-        if (slop) _XEatData(dpy,4-slop);
-    }
-    UnlockDisplay(dpy);
-    SyncHandle();
-
-#else
-    be_buf = __glXGetServerString(name);
-    numbytes = strlen(be_buf) + 1;
-    len = __GLX_PAD(numbytes) >> 2;
-#endif
-
-    length = len;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = length;
-    reply.n = numbytes;
-
-    if (client->swapped) {
-        glxSwapQueryServerStringReply(client, &reply, be_buf);
-    } else {
-        WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)&reply);
-        WriteToClient(client, (int)(length << 2), be_buf);
-    }
-
-    return Success;
-}
-
-int __glXClientInfo(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;
-    xGLXClientInfoReq *be_req;
-    const char *buf;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-   
-    cl->GLClientmajorVersion = req->major;
-    cl->GLClientminorVersion = req->minor;
-    if (cl->GLClientextensions) __glXFree(cl->GLClientextensions);
-    buf = (const char *)(req+1);
-    cl->GLClientextensions = strdup(buf);
-
-    to_screen = screenInfo.numScreens - 1;
-
-    for (s=from_screen; s<=to_screen; s++)
-    {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReq(GLXClientInfo,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXClientInfo;
-       be_req->major = req->major;
-       be_req->minor = req->minor;
-       be_req->length = req->length;
-       be_req->numbytes = req->numbytes;
-       Data(dpy, buf, req->numbytes);
-
-       UnlockDisplay(dpy);
-       SyncHandle();
-    }
-
-    return Success;
-}
-
-int __glXUseXFont(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXUseXFontReq *req;
-    xGLXUseXFontReq *be_req;
-    FontPtr pFont;
-    __GLXcontext *glxc = NULL;
-    int from_screen = 0;
-    int to_screen = 0;
-    int s;
-    dmxFontPrivPtr  pFontPriv;
-    DMXScreenInfo *dmxScreen;
-    Display *dpy;
-
-    req = (xGLXUseXFontReq *) pc;
-
-    if (req->contextTag != 0) {
-	glxc = __glXLookupContextByTag(cl, req->contextTag);
-	if (glxc) {
-	   from_screen = to_screen = glxc->pScreen->myNum;
-	}
-    }
-
-    /*
-    ** Font can actually be either the ID of a font or the ID of a GC
-    ** containing a font.
-    */
-    pFont = (FontPtr)LookupIDByType(req->font, RT_FONT);
-    if (!pFont) {
-        GC *pGC = (GC *)LookupIDByType(req->font, RT_GC);
-        if (!pGC) {
-	    client->errorValue = req->font;
-            return BadFont;
-	}
-	pFont = pGC->font;
-    }
-
-    pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex);
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-
-    for (s=from_screen; s<=to_screen; s++) {
-       dmxScreen = &dmxScreens[s];
-       dpy = GetBackEndDisplay(cl,s);
-
-       dmxSync( dmxScreen, 1 );
-
-       LockDisplay(dpy);
-       GetReq(GLXUseXFont,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXUseXFont;
-       be_req->contextTag = (glxc ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);
-       be_req->font = pFontPriv->font[s]->fid;
-       be_req->first = req->first;
-       be_req->count = req->count;
-       be_req->listBase = req->listBase;
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-       XSync( dpy, False );
-    }
-
-    return Success;
-}
-
-/*
- * start GLX 1.3 here
- */
-
-int __glXGetFBConfigs(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc;
-    xGLXGetFBConfigsReply reply;
-    __GLXFBConfig *pFBConfig;
-    CARD32 buf[2 * __GLX_TOTAL_FBCONFIG_PROPS];
-    int numAttribs = __GLX_TOTAL_FBCONFIG_PROPS;
-    unsigned int screen = req->screen;
-    int numFBConfigs, i, p;
-    __GLXscreenInfo *pGlxScreen;
-
-    if (screen > screenInfo.numScreens) {
-	/* The client library must send a valid screen number. */
-	client->errorValue = screen;
-	return BadValue;
-    }
-
-    pGlxScreen = &__glXActiveScreens[screen];
-    numFBConfigs = __glXNumFBConfigs;
-
-    reply.numFBConfigs = numFBConfigs;
-    reply.numAttribs = numAttribs;
-    reply.length = (numFBConfigs * 2 * numAttribs * __GLX_SIZE_CARD32) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-	__GLX_DECLARE_SWAP_VARIABLES;
-	__GLX_SWAP_SHORT(&reply.sequenceNumber);
-	__GLX_SWAP_INT(&reply.length);
-	__GLX_SWAP_INT(&reply.numFBConfigs);
-	__GLX_SWAP_INT(&reply.numAttribs);
-    }
-    WriteToClient(client, sz_xGLXGetFBConfigsReply, (char *)&reply);
-
-    for (i=0; i < numFBConfigs; i++) {
-       int associatedVisualId = 0;
-       int drawableTypeIndex;
-       pFBConfig = __glXFBConfigs[ i * (screenInfo.numScreens+1) ];
-
-	p = 0;
-	/* core attributes */
-	buf[p++] = GLX_FBCONFIG_ID;
-	buf[p++] = pFBConfig->id;
-	buf[p++] = GLX_BUFFER_SIZE;
-	buf[p++] = pFBConfig->indexBits;
-	buf[p++] = GLX_LEVEL;
-	buf[p++] = pFBConfig->level;
-	buf[p++] = GLX_DOUBLEBUFFER;
-	buf[p++] = pFBConfig->doubleBufferMode;
-	buf[p++] = GLX_STEREO;
-	buf[p++] = pFBConfig->stereoMode;
-	buf[p++] = GLX_AUX_BUFFERS;
-	buf[p++] = pFBConfig->maxAuxBuffers;
-	buf[p++] = GLX_RED_SIZE;
-	buf[p++] = pFBConfig->redBits;
-	buf[p++] = GLX_GREEN_SIZE;
-	buf[p++] = pFBConfig->greenBits;
-	buf[p++] = GLX_BLUE_SIZE;
-	buf[p++] = pFBConfig->blueBits;
-	buf[p++] = GLX_ALPHA_SIZE;
-	buf[p++] = pFBConfig->alphaBits;
-	buf[p++] = GLX_DEPTH_SIZE;
-	buf[p++] = pFBConfig->depthBits;
-	buf[p++] = GLX_STENCIL_SIZE;
-	buf[p++] = pFBConfig->stencilBits;
-	buf[p++] = GLX_ACCUM_RED_SIZE;
-	buf[p++] = pFBConfig->accumRedBits;
-	buf[p++] = GLX_ACCUM_GREEN_SIZE;
-	buf[p++] = pFBConfig->accumGreenBits;
-	buf[p++] = GLX_ACCUM_BLUE_SIZE;
-	buf[p++] = pFBConfig->accumBlueBits;
-	buf[p++] = GLX_ACCUM_ALPHA_SIZE;
-	buf[p++] = pFBConfig->accumAlphaBits;
-	buf[p++] = GLX_RENDER_TYPE;
-	buf[p++] = pFBConfig->renderType;
-	buf[p++] = GLX_DRAWABLE_TYPE;
-	drawableTypeIndex = p;
-	buf[p++] = pFBConfig->drawableType;
-	buf[p++] = GLX_X_VISUAL_TYPE;
-	buf[p++] = pFBConfig->visualType;
-	buf[p++] = GLX_CONFIG_CAVEAT;
-	buf[p++] = pFBConfig->visualCaveat;
-	buf[p++] = GLX_TRANSPARENT_TYPE;
-	buf[p++] = pFBConfig->transparentType;
-	buf[p++] = GLX_TRANSPARENT_RED_VALUE;
-	buf[p++] = pFBConfig->transparentRed;
-	buf[p++] = GLX_TRANSPARENT_GREEN_VALUE;
-	buf[p++] = pFBConfig->transparentGreen;
-	buf[p++] = GLX_TRANSPARENT_BLUE_VALUE;
-	buf[p++] = pFBConfig->transparentBlue;
-	buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE;
-	buf[p++] = pFBConfig->transparentAlpha;
-	buf[p++] = GLX_TRANSPARENT_INDEX_VALUE;
-	buf[p++] = pFBConfig->transparentIndex;
-	buf[p++] = GLX_MAX_PBUFFER_WIDTH;
-	buf[p++] = pFBConfig->maxPbufferWidth;
-	buf[p++] = GLX_MAX_PBUFFER_HEIGHT;
-	buf[p++] = pFBConfig->maxPbufferHeight;
-	buf[p++] = GLX_MAX_PBUFFER_PIXELS;
-	buf[p++] = pFBConfig->maxPbufferPixels;
-
-	/*
-         * find the visual of the back-end server and match a visual
-	 * on the proxy.
-	 * do only once - if a visual is not yet associated.
-	 */
-	if (pFBConfig->associatedVisualId == (unsigned int)-1) {
-	   DMXScreenInfo *dmxScreen = &dmxScreens[screen];
-	   __GLXFBConfig *be_pFBConfig = __glXFBConfigs[ i * (screenInfo.numScreens+1)+screen+1 ];
-	   __GLXvisualConfig *pGlxVisual = NULL;
-	   int v;
-	   int found = 0;
-	   for (v=0; v<dmxScreen->numGlxVisuals; v++) {
-	      if (dmxScreen->glxVisuals[v].vid == be_pFBConfig->associatedVisualId) {
-		 pGlxVisual = &dmxScreen->glxVisuals[v];
-		 break;
-	      }
-	   }
-
-	   if (pGlxVisual) {
-	      for (v=0; v<pGlxScreen->numVisuals; v++) {
-		 if (glxVisualsMatch(&pGlxScreen->pGlxVisual[v], pGlxVisual)) {
-		    associatedVisualId = pGlxScreen->pGlxVisual[v].vid;
-		    found = 1;
-		    break;
-		 }
-	      }
-	   }
-
-	   if (!found) {
-	      associatedVisualId = 0;
-	      pFBConfig->drawableType &= ~(GLX_WINDOW_BIT);
-	      buf[drawableTypeIndex] = pFBConfig->drawableType;
-	   }
-#ifdef PANORAMIX
-	   else if (!noPanoramiXExtension) {
-	      /* convert the associated visualId to the panoramix one */
-	      pFBConfig->associatedVisualId =
-		  PanoramiXTranslateVisualID(screen, v);
-	   }
-#endif
-	}
-	else {
-	   associatedVisualId = pFBConfig->associatedVisualId;
-	}
-
-	buf[p++] = GLX_VISUAL_ID;
-	buf[p++] = associatedVisualId;
-
-	/* SGIS_multisample attributes */
-	buf[p++] = GLX_SAMPLES_SGIS;
-	buf[p++] = pFBConfig->multiSampleSize;
-	buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;
-	buf[p++] = pFBConfig->nMultiSampleBuffers;
-
-	/* SGIX_pbuffer specific attributes */
-	buf[p++] = GLX_OPTIMAL_PBUFFER_WIDTH_SGIX;
-	buf[p++] = pFBConfig->optimalPbufferWidth;
-	buf[p++] = GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX;
-	buf[p++] = pFBConfig->optimalPbufferHeight;
-
-	buf[p++] = GLX_VISUAL_SELECT_GROUP_SGIX;
-	buf[p++] = pFBConfig->visualSelectGroup;
-
-	if (client->swapped) {
-	    __GLX_DECLARE_SWAP_VARIABLES;
-	    __GLX_SWAP_INT_ARRAY((int *)buf, 2*numAttribs);
-	}
-	WriteToClient(client, 2*numAttribs * __GLX_SIZE_CARD32, (char *)buf);
-    }
-    return Success;
-}
-
-int __glXGetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-   xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *)pc;
-   xGLXGetFBConfigsReq new_req;
-
-   new_req.reqType = req->reqType;
-   new_req.glxCode = req->glxCode;
-   new_req.length = req->length;
-   new_req.screen = req->screen;
-
-   return( __glXGetFBConfigs( cl, (GLbyte *)&new_req ) );
-}
-
-
-int __glXCreateWindow(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXCreateWindowReq *req = (xGLXCreateWindowReq *) pc;
-    int screen = req->screen;
-    GLXFBConfigID fbconfigId = req->fbconfig;
-    XID windowId = req->window;
-    XID glxwindowId = req->glxwindow;
-    DrawablePtr pDraw;
-    ScreenPtr pScreen;
-    __glXWindow *pGlxWindow;
-    __GLXFBConfig *pGlxFBConfig = NULL;
-    VisualPtr pVisual;
-    VisualID visId;
-    int i, rc;
-
-    /*
-    ** Check if windowId is valid 
-    */
-    rc = dixLookupDrawable(&pDraw, windowId, client, M_DRAWABLE_WINDOW,
-			   DixAddAccess);
-    if (rc != Success)
-	return rc;
-
-    /*
-    ** Check if screen of window matches screen of fbconfig.
-    */
-    pScreen = pDraw->pScreen;
-    if (screen != pScreen->myNum) {
-	return BadMatch;
-    }
-
-    /*
-    ** Find the FBConfigRec for this fbconfigid.
-    */
-    if (!(pGlxFBConfig = glxLookupFBConfig(fbconfigId))) {
-	client->errorValue = fbconfigId;
-	return __glXBadFBConfig;
-    }
-    visId = pGlxFBConfig->associatedVisualId;
-
-    /*
-    ** Check if the fbconfig supports rendering to windows 
-    */
-    if( !(pGlxFBConfig->drawableType & GLX_WINDOW_BIT) ) {
-	return BadMatch;	
-    }
-
-    if (visId != None) {
-       /*
-	** Check if the visual ID is valid for this screen.
-	*/
-       pVisual = pScreen->visuals;
-       for (i = 0; i < pScreen->numVisuals; i++, pVisual++) {
-	  if (pVisual->vid == visId) {
-	     break;
-	  }
-       }
-       if (i == pScreen->numVisuals) {
-	  client->errorValue = visId;
-	  return BadValue;
-       }
-	
-        /*
-        ** Check if color buffer depth of fbconfig matches depth 
-	** of window.
-        */
-        if (pVisual->nplanes != pDraw->depth) {
-	    return BadMatch;
-	}
-    } else
-	/*
-	** The window was created with no visual that corresponds
-	** to fbconfig 
-	*/
-	return BadMatch;
-
-    /*
-    ** Check if there is already a fbconfig associated with this window
-    */
-    if ( LookupIDByType(glxwindowId, __glXWindowRes) ) {
-	client->errorValue = glxwindowId;
-	return BadAlloc;
-    }
-
-    pGlxWindow = (__glXWindow *) xalloc(sizeof(__glXWindow));
-    if (!pGlxWindow) {
-	return BadAlloc;
-    }
-
-    /*
-    ** Register this GLX window as a resource
-    */
-    if (!(AddResource(glxwindowId, __glXWindowRes, pGlxWindow))) {
-	return BadAlloc;
-    }
-
-    pGlxWindow->pDraw = pDraw;
-    pGlxWindow->type = GLX_GLXWINDOW_TYPE;
-    pGlxWindow->idExists = True;
-    pGlxWindow->refcnt = 0;
-    pGlxWindow->pGlxFBConfig = pGlxFBConfig;
-    pGlxWindow->pScreen = pScreen;
-
-    return Success;
-}
-
-int __glXDestroyWindow(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc;
-    XID glxwindow = req->glxwindow;
-
-    /*
-    ** Check if it's a valid GLX window.
-    */
-    if (!LookupIDByType(glxwindow, __glXWindowRes)) {
-	client->errorValue = glxwindow;
-	return __glXBadDrawable;
-    }
-    /*
-    ** The glx window destructor will check whether it's current before
-    ** freeing anything.
-    */
-    FreeResource(glxwindow, RT_NONE);	
-
-    return Success;
-}
-
-int __glXQueryContext(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    __GLXcontext *ctx;
-    xGLXQueryContextReq *req;
-    xGLXQueryContextReply reply;
-    int nProps;
-    int *sendBuf, *pSendBuf;
-    int nReplyBytes;
-
-    req = (xGLXQueryContextReq *)pc;
-    ctx = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);
-    if (!ctx) {
-        client->errorValue = req->context;
-        return __glXBadContext;
-    }
-
-    nProps = 3;
-
-    reply.length = nProps << 1;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.n = nProps;
-
-    nReplyBytes = reply.length << 2;
-    sendBuf = (int *)xalloc(nReplyBytes);
-    pSendBuf = sendBuf;
-    *pSendBuf++ = GLX_FBCONFIG_ID;
-    *pSendBuf++ = (int)(ctx->pFBConfig->id);
-    *pSendBuf++ = GLX_RENDER_TYPE;
-    *pSendBuf++ = (int)(ctx->pFBConfig->renderType);
-    *pSendBuf++ = GLX_SCREEN;
-    *pSendBuf++ = (int)(ctx->pScreen->myNum);
-
-    if (client->swapped) {
-        __glXSwapQueryContextReply(client, &reply, sendBuf);
-    } else {
-        WriteToClient(client, sz_xGLXQueryContextReply, (char *)&reply);
-        WriteToClient(client, nReplyBytes, (char *)sendBuf);
-    }
-    xfree((char *)sendBuf);
-
-    return Success;
-}
-
-int __glXQueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    __GLXcontext *ctx;
-    xGLXQueryContextInfoEXTReq *req;
-    xGLXQueryContextInfoEXTReply reply;
-    int nProps;
-    int *sendBuf, *pSendBuf;
-    int nReplyBytes;
-
-    req = (xGLXQueryContextInfoEXTReq *)pc;
-    ctx = (__GLXcontext *) SecurityLookupIDByType(client, req->context, __glXContextRes, DixReadAccess);
-    if (!ctx) {
-        client->errorValue = req->context;
-        return __glXBadContext;
-    }
-
-    nProps = 4;
-
-    reply.length = nProps << 1;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.n = nProps;
-
-    nReplyBytes = reply.length << 2;
-    sendBuf = (int *)xalloc(nReplyBytes);
-    pSendBuf = sendBuf;
-    *pSendBuf++ = GLX_SHARE_CONTEXT_EXT;
-    *pSendBuf++ = (int)(ctx->share_id);
-    *pSendBuf++ = GLX_VISUAL_ID_EXT;
-    *pSendBuf++ = (int)(ctx->pVisual ? ctx->pVisual->vid : 0);
-    *pSendBuf++ = GLX_SCREEN_EXT;
-    *pSendBuf++ = (int)(ctx->pScreen->myNum);
-    *pSendBuf++ = GLX_FBCONFIG_ID;
-    *pSendBuf++ = (int)(ctx->pFBConfig ? ctx->pFBConfig->id : 0);
-
-    if (client->swapped) {
-        __glXSwapQueryContextInfoEXTReply(client, &reply, sendBuf);
-    } else {
-        WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)&reply);
-        WriteToClient(client, nReplyBytes, (char *)sendBuf);
-    }
-    xfree((char *)sendBuf);
-
-    return Success;
-}
-
-int __glXCreatePbuffer(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXCreatePbufferReq *req = (xGLXCreatePbufferReq *)pc;
-    xGLXCreatePbufferReq *be_req;
-    int screen = req->screen;
-    GLXFBConfigID fbconfigId = req->fbconfig;
-    GLXPbuffer pbuffer = req->pbuffer;
-    __glXPbuffer *pGlxPbuffer;
-    int numAttribs = req->numAttribs;
-    int *attr;
-    ScreenPtr pScreen;
-    __GLXFBConfig *pGlxFBConfig;
-    __GLXFBConfig *be_pGlxFBConfig;
-    XID be_xid;
-    Display *dpy;
-    DMXScreenInfo *dmxScreen;
-    int s;
-    int from_screen, to_screen;
-
-   /*
-    ** Look up screen and FBConfig.
-    */
-    if (screen > screenInfo.numScreens) {
-        /* The client library must send a valid screen number. */
-        client->errorValue = screen;
-        return BadValue;
-    }
-    pScreen = screenInfo.screens[screen];
-
-    /*
-    ** Find the FBConfigRec for this fbconfigid.
-    */
-    if (!(pGlxFBConfig = glxLookupFBConfig(fbconfigId))) {
-	client->errorValue = fbconfigId;
-	return __glXBadFBConfig;
-    }
-
-    /*
-    ** Create the GLX part of the Pbuffer.
-    */
-    pGlxPbuffer = (__glXPbuffer *) xalloc(sizeof(__glXPbuffer));
-    if (!pGlxPbuffer) {
-        return BadAlloc;
-    }
-
-    pGlxPbuffer->be_xids = (XID *) xalloc( sizeof(XID) * screenInfo.numScreens );
-    if (!pGlxPbuffer->be_xids) {
-        xfree(pGlxPbuffer);
-        return BadAlloc;
-    }
-
-    /*
-     * Allocate an XID on the back-end server(s) and send him the request
-     */
-    from_screen = to_screen = screen;
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-       dpy = GetBackEndDisplay(cl,s);
-       be_xid = XAllocID(dpy);
-       dmxScreen = &dmxScreens[s];
-       be_pGlxFBConfig = glxLookupBackEndFBConfig( pGlxFBConfig->id, s );
-       
-       attr = (int *)( req+1 );
-
-       LockDisplay(dpy);
-       GetReqExtra(GLXCreatePbuffer, 2 * numAttribs * __GLX_SIZE_CARD32, be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXCreatePbuffer;
-       be_req->screen = be_pGlxFBConfig->screen;
-       be_req->fbconfig = be_pGlxFBConfig->id;
-       be_req->pbuffer = be_xid;
-       be_req->numAttribs = numAttribs;
-    
-       /* Send attributes */
-       if ( attr != NULL ) {
-	  CARD32 *pc = (CARD32 *)(be_req + 1);
-
-	  while (numAttribs-- > 0) {
-	     *pc++ = *attr++;     /* token */
-	     *pc++ = *attr++;     /* value */
-	  }
-       }
-
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-       pGlxPbuffer->be_xids[s] = be_xid;
-    }
-
-
-    pGlxPbuffer->idExists = True;
-    pGlxPbuffer->refcnt = 0;
-    pGlxPbuffer->pFBConfig = pGlxFBConfig;
-    pGlxPbuffer->pScreen = pScreen;
-
-    /*
-    ** Register the resource.
-    */
-    if (!(AddResource(pbuffer, __glXPbufferRes, pGlxPbuffer))) {
-        return BadAlloc;
-    }
-
-    return Success;
-
-}
-
-int __glXDestroyPbuffer(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc;
-    xGLXDestroyPbufferReq *be_req;
-    GLXPbuffer pbuffer = req->pbuffer;
-    Display *dpy;
-    int screen;
-    DMXScreenInfo *dmxScreen;
-    __glXPbuffer *pGlxPbuffer;
-    int s;
-    int from_screen, to_screen;
-
-    /*
-    ** Check if it's a valid Pbuffer
-    */
-    pGlxPbuffer = (__glXPbuffer *)LookupIDByType(pbuffer, __glXPbufferRes);
-    if (!pGlxPbuffer) {
-	client->errorValue = pbuffer;
-	return __glXBadPbuffer;
-    }
-
-    screen = pGlxPbuffer->pScreen->myNum;
-
-    from_screen = to_screen = screen;
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    for (s=from_screen; s<=to_screen; s++) {
-       dpy = GetBackEndDisplay(cl,s);
-       dmxScreen = &dmxScreens[s];
-
-       /* send the destroy request to the back-end server */
-       LockDisplay(dpy);
-       GetReq(GLXDestroyPbuffer, be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = X_GLXDestroyPbuffer;
-       be_req->pbuffer = pGlxPbuffer->be_xids[s];
-       UnlockDisplay(dpy);
-       SyncHandle();
-    }
-
-    FreeResource(pbuffer, RT_NONE);	
-
-    return Success;
-}
-
-int __glXGetDrawableAttributes(__GLXclientState *cl, GLbyte *pc)
-{
-   xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc;
-   xGLXGetDrawableAttributesReq *be_req;
-   xGLXGetDrawableAttributesReply reply;
-   ClientPtr client = cl->client;
-   GLXDrawable drawId = req->drawable;
-   GLXDrawable be_drawable = 0;
-   DrawablePtr pDraw = NULL;
-   Display *dpy;
-   int screen, rc;
-   DMXScreenInfo *dmxScreen;
-   CARD32 *attribs = NULL;
-   int attribs_size;
-#ifdef PANORAMIX
-    PanoramiXRes *pXinDraw = NULL;
-#endif
-
-   if (drawId != None) {
-      rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixGetAttrAccess);
-      if (rc == Success) {
-	 if (pDraw->type == DRAWABLE_WINDOW) {
-		WindowPtr pWin = (WindowPtr)pDraw;
-		be_drawable = 0;
-		screen = pWin->drawable.pScreen->myNum;
-
-	 }
-	 else {
-	    /*
-	     ** Drawable is not a Window , GLXWindow or a GLXPixmap.
-	     */
-	    client->errorValue = drawId;
-	    return __glXBadDrawable;
-	 }
-      }
-
-      if (!pDraw) {
-	 __GLXpixmap *pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
-							__glXPixmapRes);
-	 if (pGlxPixmap) {
-		pDraw = pGlxPixmap->pDraw;
-		screen = pGlxPixmap->pScreen->myNum;
-                be_drawable = pGlxPixmap->be_xids[screen];
-	 }
-      }
-
-      if (!pDraw) {
-	 __glXWindow *pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);
-	 if (pGlxWindow) {
-	    pDraw = pGlxWindow->pDraw;
-	    screen = pGlxWindow->pScreen->myNum;
-	    be_drawable = 0;
-     	 }
-      }
-
-      if (!pDraw) {
-	 __glXPbuffer *pGlxPbuffer = (__glXPbuffer *)LookupIDByType(drawId, __glXPbufferRes);
-	 if (pGlxPbuffer) {
-    	    pDraw = (DrawablePtr)pGlxPbuffer;
-	    screen = pGlxPbuffer->pScreen->myNum;
-	    be_drawable = pGlxPbuffer->be_xids[screen];
-	 }
-      }
-
-
-      if (!pDraw) {
-	 /*
-	  ** Drawable is not a Window , GLXWindow or a GLXPixmap.
-	  */
-	 client->errorValue = drawId;
-	 return __glXBadDrawable;
-      }
-    }
-
-
-   /* if the drawable is a window or GLXWindow - 
-    * we need to find the base id on the back-end server
-    */
-   if (!be_drawable) {
-       WindowPtr pWin = (WindowPtr)pDraw;
-
-#ifdef PANORAMIX
-       if (!noPanoramiXExtension) {
-	  pXinDraw = (PanoramiXRes *)
-	     SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);
-	  if (!pXinDraw) {
-	     client->errorValue = drawId;
-	     return __glXBadDrawable;
-	  }
-
-	  dixLookupWindow(&pWin, pXinDraw->info[screen].id, client,
-			  DixReadAccess);
-       }
-#endif
-
-       if (pWin) {
-	   be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   if (!be_drawable) {
-	      /* it might be that the window did not created yet on the */
-	      /* back-end server (lazy window creation option), force   */
-	      /* creation of the window */
-	      dmxCreateAndRealizeWindow( pWin, TRUE );
-	      be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   }
-       }
-       else {
-	  client->errorValue = drawId;
-	  return __glXBadDrawable;
-       }
-   }
-
-
-   /* send the request to the back-end server */
-   dpy = GetBackEndDisplay(cl,screen);
-   dmxScreen = &dmxScreens[screen];
-
-   /* make sure drawable exists on back-end */
-   dmxSync( dmxScreen, 1 );
-
-   LockDisplay(dpy);
-   GetReq(GLXGetDrawableAttributes, be_req);
-   be_req->reqType = dmxScreen->glxMajorOpcode;
-   be_req->glxCode = X_GLXGetDrawableAttributes;
-   be_req->drawable = be_drawable;
-   be_req->length = req->length;
-   if (!_XReply(dpy, (xReply *) &reply, 0, False)) {
-      UnlockDisplay(dpy);
-      SyncHandle();
-      return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );
-   }
-
-   if (reply.numAttribs) {
-      attribs_size = 2 * reply.numAttribs * __GLX_SIZE_CARD32;
-      attribs = (CARD32 *) Xalloc(attribs_size);
-      if (attribs == NULL) {
-	 UnlockDisplay(dpy);
-	 SyncHandle();
-	 return BadAlloc;
-      }
-
-      _XRead(dpy, (char *) attribs, attribs_size);
-   }
-
-   UnlockDisplay(dpy);
-   SyncHandle();
-
-
-   /* send the reply back to the client */
-   reply.sequenceNumber = client->sequence;
-   if (client->swapped) {
-      __glXSwapGetDrawableAttributesReply(client, &reply, (int *)attribs);
-   }
-   else {
-      WriteToClient(client, sz_xGLXGetDrawableAttributesReply, (char *)&reply);
-      WriteToClient(client, attribs_size, (char *)attribs);
-   }
-
-   Xfree(attribs);
-
-   return Success;
-}
-
-int __glXChangeDrawableAttributes(__GLXclientState *cl, GLbyte *pc)
-{
-   xGLXChangeDrawableAttributesReq *req = (xGLXChangeDrawableAttributesReq *)pc;
-   xGLXChangeDrawableAttributesReq *be_req;
-   ClientPtr client = cl->client;
-   GLXDrawable drawId = req->drawable;
-   GLXDrawable be_drawable = 0;
-   DrawablePtr pDraw = NULL;
-   Display *dpy;
-   int screen, rc;
-   DMXScreenInfo *dmxScreen;
-   char *attrbuf;
-#ifdef PANORAMIX
-    PanoramiXRes *pXinDraw = NULL;
-    PanoramiXRes *pXinReadDraw = NULL;
-#endif
-
-   if (drawId != None) {
-      rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixSetAttrAccess);
-      if (rc == Success) {
-	 if (pDraw->type == DRAWABLE_WINDOW) {
-		WindowPtr pWin = (WindowPtr)pDraw;
-		be_drawable = 0;
-		screen = pWin->drawable.pScreen->myNum;
-
-	 }
-	 else {
-	    /*
-	     ** Drawable is not a Window , GLXWindow or a GLXPixmap.
-	     */
-	    client->errorValue = drawId;
-	    return __glXBadDrawable;
-	 }
-      }
-
-      if (!pDraw) {
-	 __GLXpixmap *pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,
-							__glXPixmapRes);
-	 if (pGlxPixmap) {
-		pDraw = pGlxPixmap->pDraw;
-		screen = pGlxPixmap->pScreen->myNum;
-                be_drawable = pGlxPixmap->be_xids[screen];
-	 }
-      }
-
-      if (!pDraw) {
-	 __glXWindow *pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);
-	 if (pGlxWindow) {
-	    pDraw = pGlxWindow->pDraw;
-	    screen = pGlxWindow->pScreen->myNum;
-	    be_drawable = 0;
-     	 }
-      }
-
-      if (!pDraw) {
-	 __glXPbuffer *pGlxPbuffer = (__glXPbuffer *)LookupIDByType(drawId, __glXPbufferRes);
-	 if (pGlxPbuffer) {
-    	    pDraw = (DrawablePtr)pGlxPbuffer;
-	    screen = pGlxPbuffer->pScreen->myNum;
-	    be_drawable = pGlxPbuffer->be_xids[screen];
-	 }
-      }
-
-
-      if (!pDraw) {
-	 /*
-	  ** Drawable is not a Window , GLXWindow or a GLXPixmap.
-	  */
-	 client->errorValue = drawId;
-	 return __glXBadDrawable;
-      }
-    }
-
-
-   /* if the drawable is a window or GLXWindow - 
-    * we need to find the base id on the back-end server
-    */
-   if (!be_drawable) {
-       WindowPtr pWin = (WindowPtr)pDraw;
-
-#ifdef PANORAMIX
-       if (!noPanoramiXExtension) {
-	  pXinDraw = (PanoramiXRes *)
-	     SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);
-	  if (!pXinDraw) {
-	     client->errorValue = drawId;
-	     return __glXBadDrawable;
-	  }
-
-	  dixLookupWindow(&pWin, pXinDraw->info[screen].id, client,
-			  DixReadAccess);
-       }
-#endif
-
-       if (pWin) {
-	   be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   if (!be_drawable) {
-	      /* it might be that the window did not created yet on the */
-	      /* back-end server (lazy window creation option), force   */
-	      /* creation of the window */
-	      dmxCreateAndRealizeWindow( pWin, TRUE );
-	      be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;
-	   }
-       }
-       else {
-	  client->errorValue = drawId;
-	  return __glXBadDrawable;
-       }
-   }
-
-
-   /* send the request to the back-end server */
-   dpy = GetBackEndDisplay(cl,screen);
-   dmxScreen = &dmxScreens[screen];
-
-   /* make sure drawable exists on back-end */
-   dmxSync( dmxScreen, 1 );
-
-   LockDisplay(dpy);
-   GetReqExtra(GLXChangeDrawableAttributes,
-                        2 * req->numAttribs * __GLX_SIZE_CARD32, be_req);
-   be_req->reqType = dmxScreen->glxMajorOpcode;
-   be_req->glxCode = X_GLXChangeDrawableAttributes;
-   be_req->drawable = be_drawable;
-   be_req->numAttribs = req->numAttribs;
-   be_req->length = req->length;
-
-   UnlockDisplay(dpy);
-   SyncHandle();
-
-   return Success;
-}
-
-int __glXSendLargeCommand(__GLXclientState *cl, GLXContextTag contextTag)
-{
-   ClientPtr client = cl->client;
-    xGLXRenderLargeReq *req;
-    GLint maxSize, amount;
-    GLint totalRequests, requestNumber;
-    GLint dataLen;
-    GLbyte *data;
-    __GLXcontext *glxc;
-    int s;
-    int from_screen, to_screen;
-
-    maxSize = cl->largeCmdMaxReqDataSize - (GLint)sizeof(xGLXRenderLargeReq);
-    dataLen = cl->largeCmdBytesTotal;
-    totalRequests = (dataLen / maxSize);
-    if (dataLen % maxSize) totalRequests++;
-
-    glxc = __glXLookupContextByTag(cl, contextTag);
-    if (!glxc) {
-       client->errorValue = contextTag;
-       return __glXBadContext;
-    }
-    from_screen = to_screen = glxc->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    /*
-    ** Send enough requests until the whole array is sent.
-    */
-    requestNumber = 1;
-    data = cl->largeCmdBuf;
-    while (dataLen > 0) {
-	amount = dataLen;
-	if (amount > maxSize) {
-	    amount = maxSize;
-	}
-
-	for (s=from_screen; s<=to_screen; s++) {
-
-	   Display *dpy = GetBackEndDisplay(cl,s);
-	   DMXScreenInfo *dmxScreen = &dmxScreens[s];
-
-	   LockDisplay(dpy);
-	   GetReq(GLXRenderLarge,req); 
-	   req->reqType = dmxScreen->glxMajorOpcode;
-	   req->glxCode = X_GLXRenderLarge; 
-	   req->contextTag = GetCurrentBackEndTag(cl,contextTag,s);
-	   req->length += (amount + 3) >> 2;
-	   req->requestNumber = requestNumber++;
-	   req->requestTotal = totalRequests;
-	   req->dataBytes = amount;
-	   Data(dpy, ((const char*)data), amount);
-	   dataLen -= amount;
-	   data = ((GLbyte *) data) + amount;
-	   UnlockDisplay(dpy);
-	   SyncHandle();
-	}
-    }
-
-    return Success;
-}
+/*

+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)

+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. 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 including the dates of first publication and

+ * either this permission notice or a reference to

+ * http://oss.sgi.com/projects/FreeB/

+ * 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

+ * SILICON GRAPHICS, INC. 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.

+ *

+ * Except as contained in this notice, the name of Silicon Graphics, Inc.

+ * shall not be used in advertising or otherwise to promote the sale, use or

+ * other dealings in this Software without prior written authorization from

+ * Silicon Graphics, Inc.

+ */

+

+#ifdef HAVE_DMX_CONFIG_H

+#include <dmx-config.h>

+#endif

+

+#include "dmx.h"

+#include "dmxwindow.h"

+#include "dmxpixmap.h"

+#include "dmxfont.h"

+#include "dmxsync.h"

+

+#undef Xmalloc

+#undef Xcalloc

+#undef Xrealloc

+#undef Xfree

+

+#include "glxserver.h"

+#include <GL/glxtokens.h>

+#include "g_disptab.h"

+#include <pixmapstr.h>

+#include <windowstr.h>

+#include "glxutil.h"

+#include "glxext.h"

+#include "unpack.h"

+

+#include "GL/glxproto.h"

+#include "glxvendor.h"

+#include "glxvisuals.h"

+#include "glxswap.h"

+

+#ifdef PANORAMIX

+#include "panoramiXsrv.h"

+#endif

+

+extern __GLXFBConfig **__glXFBConfigs;

+extern int            __glXNumFBConfigs;

+

+extern __GLXFBConfig *glxLookupFBConfig( GLXFBConfigID id );

+extern __GLXFBConfig *glxLookupFBConfigByVID( VisualID vid );

+extern __GLXFBConfig *glxLookupBackEndFBConfig( GLXFBConfigID id, int screen );

+extern int glxIsExtensionSupported( char *ext );

+extern int __glXGetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc);

+

+#define BE_TO_CLIENT_ERROR(x) \

+           ( (x) >= __glXerrorBase ? \

+             (x) - dmxScreen->glxErrorBase + __glXerrorBase \

+	     : (x) )

+

+Display *GetBackEndDisplay( __GLXclientState *cl, int s )

+{

+   if (! cl->be_displays[s] ) {

+      cl->be_displays[s] = XOpenDisplay( DisplayString(dmxScreens[s].beDisplay) );

+   }

+   return( cl->be_displays[s] );

+}

+

+/*

+** Create a GL context with the given properties.

+*/

+static int CreateContext(__GLXclientState *cl, 

+                         GLXContextID gcId,

+			 VisualID vid, GLXFBConfigID fbconfigId,

+			 int screen,

+			 GLXContextID shareList,

+			 int isDirect )

+{

+    ClientPtr client = cl->client;

+    xGLXCreateContextReq *be_req;

+    xGLXCreateNewContextReq *be_new_req;

+    VisualPtr pVisual;

+    ScreenPtr pScreen;

+    __GLXcontext *glxc, *shareglxc;

+    __GLXvisualConfig *pGlxVisual;

+    __GLXscreenInfo *pGlxScreen;

+    VisualID visual = vid;

+    GLint i;

+    int from_screen = screen;

+    int to_screen = screen;

+    DMXScreenInfo *dmxScreen;

+    VisualID be_vid;

+    GLXFBConfigID be_fbconfigId;

+    int num_be_screens;

+    Display *dpy;

+    

+    /*

+    ** Check if screen exists.

+    */

+    if (screen >= screenInfo.numScreens) {

+	client->errorValue = screen;

+	return BadValue;

+    }

+

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    /*

+     ** Find the display list space that we want to share.  

+     **

+     */

+    if (shareList == None) {

+       shareglxc = NULL;

+    } else {

+       shareglxc = (__GLXcontext *) LookupIDByType(shareList, __glXContextRes);

+       if (!shareglxc) {

+	  client->errorValue = shareList;

+	  return __glXBadContext;

+       }

+    }

+

+    /*

+    ** Allocate memory for the new context

+    */

+    glxc = __glXCalloc(1, sizeof(__GLXcontext));

+    if (!glxc) {

+	return BadAlloc;

+    }

+

+    pScreen = screenInfo.screens[screen];

+    pGlxScreen = &__glXActiveScreens[screen];

+

+    if (fbconfigId != None) {

+       glxc->pFBConfig = glxLookupFBConfig( fbconfigId );

+       if (!glxc->pFBConfig) {

+	  client->errorValue = fbconfigId;

+	  __glXFree( glxc );

+	  return BadValue;

+       }

+       visual = glxc->pFBConfig->associatedVisualId;

+    }

+    else {

+       glxc->pFBConfig = NULL;

+    }

+

+    if (visual != None) {

+       /*

+	** Check if the visual ID is valid for this screen.

+	*/

+       pVisual = pScreen->visuals;

+       for (i = 0; i < pScreen->numVisuals; i++, pVisual++) {

+	  if (pVisual->vid == visual) {

+	     break;

+	  }

+       }

+       if (i == pScreen->numVisuals) {

+	  client->errorValue = visual;

+	  __glXFree( glxc );

+	  return BadValue;

+       }

+

+       pGlxVisual = pGlxScreen->pGlxVisual;

+       for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {

+	  if (pGlxVisual->vid == visual) {

+	     break;

+	  }

+       }

+       if (i == pGlxScreen->numVisuals) {

+	  /*

+	   ** Visual not support on this screen by this OpenGL implementation.

+	   */

+	  client->errorValue = visual;

+	  __glXFree( glxc );

+	  return BadValue;

+       }

+

+       if ( glxc->pFBConfig == NULL ) {

+	   glxc->pFBConfig = glxLookupFBConfigByVID( visual );

+

+	   if ( glxc->pFBConfig == NULL ) {

+	      /*

+               * visual does not have an FBConfig ???

+	      client->errorValue = visual;

+	      __glXFree( glxc );

+	      return BadValue;

+	       */

+	   }

+       }

+    }

+    else {

+       pVisual = NULL;

+       pGlxVisual = NULL;

+    }

+

+    glxc->pScreen = pScreen;

+    glxc->pGlxScreen = pGlxScreen;

+    glxc->pVisual = pVisual;

+    glxc->pGlxVisual = pGlxVisual;

+

+    /*

+     * allocate memory for back-end servers info

+     */

+    num_be_screens = to_screen - from_screen + 1;

+    glxc->real_ids = (XID *)__glXMalloc(sizeof(XID) * num_be_screens);

+    if (!glxc->real_ids) {

+	return BadAlloc;

+    }

+    glxc->real_vids = (XID *)__glXMalloc(sizeof(XID) * num_be_screens);

+    if (!glxc->real_vids) {

+	return BadAlloc;

+    }

+

+    for (screen = from_screen; screen <= to_screen; screen++) {

+       int sent = 0;

+       pScreen = screenInfo.screens[screen];

+       pGlxScreen = &__glXActiveScreens[screen];

+       dmxScreen = &dmxScreens[screen];

+

+       if (glxc->pFBConfig) {

+	  __GLXFBConfig *beFBConfig = glxLookupBackEndFBConfig( glxc->pFBConfig->id, 

+		                                                screen );

+	  be_fbconfigId = beFBConfig->id;

+       }

+

+       if (pGlxVisual) {

+

+	  be_vid = glxMatchGLXVisualInConfigList( pGlxVisual,

+	                                    dmxScreen->glxVisuals,

+					    dmxScreen->numGlxVisuals  );

+

+	  if (!be_vid) {

+	     /* visual is not supported on the back-end server */

+	     __glXFree( glxc->real_ids );

+	     __glXFree( glxc->real_vids );

+	     __glXFree( glxc );

+	     return BadValue;

+	  }

+       }

+

+       glxc->real_ids[screen-from_screen] = XAllocID(GetBackEndDisplay(cl,screen));

+

+       /* send the create context request to the back-end server */

+       dpy = GetBackEndDisplay(cl,screen);

+       if (glxc->pFBConfig) {

+	     /*Since for a certain visual both RGB and COLOR INDEX

+	      *can be on then the only parmeter to choose the renderType

+	      * should be the class of the colormap since all 4 first 

+	      * classes does not support RGB mode only COLOR INDEX ,

+	      * and so TrueColor and DirectColor does not support COLOR INDEX*/

+	     int renderType =  glxc->pFBConfig->renderType;  

+	     if ( pVisual ) {

+		 switch ( pVisual->class ){

+		     case PseudoColor:

+                     case StaticColor:

+                     case GrayScale:

+                     case StaticGray:

+                         renderType = GLX_COLOR_INDEX_TYPE;

+                         break;

+                     case TrueColor:

+                     case DirectColor:

+                     default:

+                         renderType = GLX_RGBA_TYPE;

+                     break;

+		 }

+	     }

+	  if ( __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	     LockDisplay(dpy);

+	     GetReq(GLXCreateNewContext,be_new_req);

+	     be_new_req->reqType = dmxScreen->glxMajorOpcode;

+	     be_new_req->glxCode = X_GLXCreateNewContext;

+	     be_new_req->context = (unsigned int)glxc->real_ids[screen-from_screen];

+	     be_new_req->fbconfig = (unsigned int)be_fbconfigId;

+	     be_new_req->screen = DefaultScreen(dpy);

+	     be_new_req->renderType = renderType;  

+

+	     be_new_req->shareList = (shareglxc ? shareglxc->real_ids[screen-from_screen] : 0);

+	     be_new_req->isDirect = 0;

+	     UnlockDisplay(dpy);

+	     glxc->real_vids[screen-from_screen] = be_fbconfigId;

+	     sent = 1;

+	  }

+	  else if (glxIsExtensionSupported("GLX_SGIX_fbconfig")) {

+

+	     xGLXCreateContextWithConfigSGIXReq *ext_req;

+	     xGLXVendorPrivateReq *vpreq;

+	     LockDisplay(dpy);

+	     GetReqExtra(GLXVendorPrivate,

+		         sz_xGLXCreateContextWithConfigSGIXReq - sz_xGLXVendorPrivateReq,

+			vpreq);

+	     ext_req = (xGLXCreateContextWithConfigSGIXReq *)vpreq;

+	     ext_req->reqType = dmxScreen->glxMajorOpcode;

+	     ext_req->glxCode = X_GLXVendorPrivate;

+	     ext_req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;

+	     ext_req->context = (unsigned int)glxc->real_ids[screen-from_screen];

+	     ext_req->fbconfig = (unsigned int)be_fbconfigId;

+	     ext_req->screen = DefaultScreen(dpy);

+	     ext_req->renderType = renderType;  

+	     ext_req->shareList = (shareglxc ? shareglxc->real_ids[screen-from_screen] : 0);

+	     ext_req->isDirect = 0;

+	     UnlockDisplay(dpy);

+	     glxc->real_vids[screen-from_screen] = be_fbconfigId;

+	     sent = 1;

+	  }

+       }

+

+       if (!sent) {

+	  LockDisplay(dpy);

+	  GetReq(GLXCreateContext,be_req);

+	  be_req->reqType = dmxScreen->glxMajorOpcode;

+	  be_req->glxCode = X_GLXCreateContext;

+	  be_req->context = (unsigned int)glxc->real_ids[screen-from_screen];

+	  be_req->visual = (unsigned int)be_vid;

+	  be_req->screen = DefaultScreen(dpy);

+	  be_req->shareList = (shareglxc ? shareglxc->real_ids[screen-from_screen] : 0);

+	  be_req->isDirect = 0;

+	  UnlockDisplay(dpy);

+	  glxc->real_vids[screen-from_screen] = be_vid;

+       }

+       SyncHandle();

+

+    }

+

+    /*

+    ** Register this context as a resource.

+    */

+    if (!AddResource(gcId, __glXContextRes, (pointer)glxc)) {

+       __glXFree( glxc->real_ids );

+       __glXFree( glxc->real_vids );

+       __glXFree( glxc );

+	client->errorValue = gcId;

+	return BadAlloc;

+    }

+    

+    /*

+    ** Finally, now that everything is working, setup the rest of the

+    ** context.

+    */

+    glxc->id = gcId;

+    glxc->share_id = shareList;

+    glxc->idExists = GL_TRUE;

+    glxc->isCurrent = GL_FALSE;

+

+    return Success;

+}

+

+int __glXCreateContext(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;

+

+    return( CreateContext(cl, req->context,req->visual, None,

+	                  req->screen, req->shareList, req->isDirect) );

+

+}

+

+int __glXCreateNewContext(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc;

+

+    return( CreateContext(cl, req->context,None, req->fbconfig,

+	                  req->screen, req->shareList, req->isDirect) );

+

+}

+

+int __glXCreateContextWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXCreateContextWithConfigSGIXReq *req = (xGLXCreateContextWithConfigSGIXReq *) pc;

+

+    return( CreateContext(cl, req->context, None, req->fbconfig,

+	                  req->screen, req->shareList, req->isDirect) );

+

+}

+

+int __glXQueryMaxSwapBarriersSGIX(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXQueryMaxSwapBarriersSGIXReq *req =

+	(xGLXQueryMaxSwapBarriersSGIXReq *)pc;

+    xGLXQueryMaxSwapBarriersSGIXReply reply;

+

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = 0;

+    reply.max = QueryMaxSwapBarriersSGIX(req->screen);

+

+    if (client->swapped) {

+	__glXSwapQueryMaxSwapBarriersSGIXReply(client, &reply);

+    } else {

+	WriteToClient(client, sz_xGLXQueryMaxSwapBarriersSGIXReply,

+		      (char *)&reply);

+    }

+

+    return Success;

+}

+

+int __glXBindSwapBarrierSGIX(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXBindSwapBarrierSGIXReq *req = (xGLXBindSwapBarrierSGIXReq *)pc;

+    DrawablePtr pDraw;

+    __GLXpixmap *pGlxPixmap = NULL;

+    __glXWindow *pGlxWindow = NULL;

+    int rc;

+

+    rc = dixLookupDrawable(&pDraw, req->drawable, client, 0, DixGetAttrAccess);

+    if (rc != Success) {

+	pGlxPixmap = (__GLXpixmap *) LookupIDByType(req->drawable,

+						    __glXPixmapRes);

+	if (pGlxPixmap) pDraw = pGlxPixmap->pDraw;

+    }

+

+    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+       pGlxWindow = (__glXWindow *) LookupIDByType(req->drawable,

+						   __glXWindowRes);

+       if (pGlxWindow) pDraw = pGlxWindow->pDraw;

+    }

+

+    if (!pDraw) {

+       client->errorValue = req->drawable;

+       return __glXBadDrawable;

+    }

+

+    return BindSwapBarrierSGIX(pDraw, req->barrier);

+}

+

+int __glXJoinSwapGroupSGIX(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXJoinSwapGroupSGIXReq *req = (xGLXJoinSwapGroupSGIXReq *)pc;

+    DrawablePtr pDraw, pMember = NULL;

+    __GLXpixmap *pGlxPixmap = NULL;

+    __glXWindow *pGlxWindow = NULL;

+    int rc;

+

+    rc = dixLookupDrawable(&pDraw, req->drawable, client, 0, DixManageAccess);

+    if (rc != Success) {

+	pGlxPixmap = (__GLXpixmap *) LookupIDByType(req->drawable,

+						    __glXPixmapRes);

+	if (pGlxPixmap) pDraw = pGlxPixmap->pDraw;

+    }

+

+    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+       pGlxWindow = (__glXWindow *) LookupIDByType(req->drawable,

+						   __glXWindowRes);

+       if (pGlxWindow) pDraw = pGlxWindow->pDraw;

+    }

+

+    if (!pDraw) {

+       client->errorValue = req->drawable;

+       return __glXBadDrawable;

+    }

+

+    if (req->member != None) {

+	rc = dixLookupDrawable(&pMember, req->member, client, 0,

+			       DixGetAttrAccess);

+	if (rc != Success) {

+	    pGlxPixmap = (__GLXpixmap *) LookupIDByType(req->member,

+							__glXPixmapRes);

+	    if (pGlxPixmap) pMember = pGlxPixmap->pDraw;

+	}

+

+	if (!pMember && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	    pGlxWindow = (__glXWindow *) LookupIDByType(req->member,

+							__glXWindowRes);

+	    if (pGlxWindow) pMember = pGlxWindow->pDraw;

+	}

+

+	if (!pMember) {

+	    client->errorValue = req->member;

+	    return __glXBadDrawable;

+	}

+    }

+

+    return JoinSwapGroupSGIX(pDraw, pMember);

+}

+

+

+/*

+** Destroy a GL context as an X resource.

+*/

+int __glXDestroyContext(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;

+    xGLXDestroyContextReq *be_req;

+    GLXContextID gcId = req->context;

+    __GLXcontext *glxc;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+    

+    glxc = (__GLXcontext *) LookupIDByType(gcId, __glXContextRes);

+    if (glxc) {

+	/*

+	** Just free the resource; don't actually destroy the context,

+	** because it might be in use.  The

+	** destroy method will be called by the resource destruction routine

+	** if necessary.

+	*/

+	FreeResourceByType(gcId, __glXContextRes, FALSE);

+

+	from_screen = to_screen = glxc->pScreen->myNum;

+

+    } else {

+	client->errorValue = gcId;

+	return __glXBadContext;

+    }

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    /*

+     * send DestroyContext request to all back-end servers

+     */

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReq(GLXDestroyContext,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXDestroyContext;

+       be_req->context = glxc->real_ids[s-from_screen];

+       UnlockDisplay(dpy);

+       SyncHandle();

+    }

+

+    return Success;

+}

+

+/*****************************************************************************/

+

+/*

+** For each client, the server keeps a table of all the contexts that are

+** current for that client (each thread of a client may have its own current

+** context).  These routines add, change, and lookup contexts in the table.

+*/

+

+/*

+** Add a current context, and return the tag that will be used to refer to it.

+*/

+static int AddCurrentContext(__GLXclientState *cl, __GLXcontext *glxc, DrawablePtr pDraw)

+{

+    int i;

+    int num = cl->numCurrentContexts;

+    __GLXcontext **table = cl->currentContexts;

+

+    if (!glxc) return -1;

+    

+    /*

+    ** Try to find an empty slot and use it.

+    */

+    for (i=0; i < num; i++) {

+	if (!table[i]) {

+	    table[i] = glxc;

+	    return i+1;

+	}

+    }

+    /*

+    ** Didn't find a free slot, so we'll have to grow the table.

+    */

+    if (!num) {

+	table = (__GLXcontext **) __glXMalloc(sizeof(__GLXcontext *));

+	cl->currentDrawables = (DrawablePtr *) __glXMalloc(sizeof(DrawablePtr));

+	cl->be_currentCTag = (GLXContextTag *) __glXMalloc(screenInfo.numScreens *sizeof(GLXContextTag));

+    } else {

+	table = (__GLXcontext **) __glXRealloc(table,

+					   (num+1)*sizeof(__GLXcontext *));

+	cl->currentDrawables = (DrawablePtr *) __glXRealloc(

+	                                          cl->currentDrawables ,

+						  (num+1)*sizeof(DrawablePtr));

+	cl->be_currentCTag = (GLXContextTag *) __glXRealloc(cl->be_currentCTag,

+	            (num+1)*screenInfo.numScreens*sizeof(GLXContextTag));

+    }

+    table[num] = glxc;

+    cl->currentDrawables[num] = pDraw;

+    cl->currentContexts = table;

+    cl->numCurrentContexts++;

+

+    memset(cl->be_currentCTag + num*screenInfo.numScreens, 0, 

+	         screenInfo.numScreens * sizeof(GLXContextTag));

+

+    return num+1;

+}

+

+/*

+** Given a tag, change the current context for the corresponding entry.

+*/

+static void ChangeCurrentContext(__GLXclientState *cl, __GLXcontext *glxc,

+				GLXContextTag tag)

+{

+    __GLXcontext **table = cl->currentContexts;

+    table[tag-1] = glxc;

+}

+

+/*

+** Given a tag, and back-end screen number, retrives the current back-end

+** tag.

+*/

+int GetCurrentBackEndTag(__GLXclientState *cl, GLXContextTag tag, int s)

+{

+   if (tag >0) {

+      return( cl->be_currentCTag[ (tag-1)*screenInfo.numScreens + s ] );

+   }

+   else {

+      return( 0 );

+   }

+}

+

+/*

+** Given a tag, and back-end screen number, sets the current back-end

+** tag.

+*/

+static void SetCurrentBackEndTag(__GLXclientState *cl, GLXContextTag tag, int s, GLXContextTag be_tag)

+{

+   if (tag >0) {

+      cl->be_currentCTag[ (tag-1)*screenInfo.numScreens + s ] = be_tag;

+   }

+}

+

+/*

+** For this implementation we have chosen to simply use the index of the

+** context's entry in the table as the context tag.  A tag must be greater

+** than 0.

+*/

+__GLXcontext *__glXLookupContextByTag(__GLXclientState *cl, GLXContextTag tag)

+{

+    int num = cl->numCurrentContexts;

+

+    if (tag < 1 || tag > num) {

+	return 0;

+    } else {

+	return cl->currentContexts[tag-1];

+    }

+}

+

+DrawablePtr __glXLookupDrawableByTag(__GLXclientState *cl, GLXContextTag tag)

+{

+    int num = cl->numCurrentContexts;

+

+    if (tag < 1 || tag > num) {

+	return 0;

+    } else {

+	return cl->currentDrawables[tag-1];

+    }

+}

+

+/*****************************************************************************/

+

+static void StopUsingContext(__GLXcontext *glxc)

+{

+    if (glxc) {

+	if (glxc == __glXLastContext) {

+	    /* Tell server GL library */

+	    __glXLastContext = 0;

+	}

+	glxc->isCurrent = GL_FALSE;

+	if (!glxc->idExists) {

+	    __glXFreeContext(glxc);

+	}

+    }

+}

+

+static void StartUsingContext(__GLXclientState *cl, __GLXcontext *glxc)

+{

+    glxc->isCurrent = GL_TRUE;

+}

+

+/*****************************************************************************/

+/*

+** Make an OpenGL context and drawable current.

+*/

+static int MakeCurrent(__GLXclientState *cl,

+                       GLXDrawable drawable,

+                       GLXDrawable readdrawable,

+		       GLXContextID context,

+		       GLXContextTag oldContextTag)

+{

+    ClientPtr client = cl->client;

+    DrawablePtr pDraw = NULL;

+    DrawablePtr pReadDraw = NULL;

+    xGLXMakeCurrentReadSGIReply new_reply;

+    xGLXMakeCurrentReq *be_req;

+    xGLXMakeCurrentReply be_reply;

+    xGLXMakeContextCurrentReq *be_new_req;

+    xGLXMakeContextCurrentReply be_new_reply;

+    GLXDrawable drawId = drawable;

+    GLXDrawable readId = readdrawable;

+    GLXContextID contextId = context;

+    __GLXpixmap *pGlxPixmap = 0;

+    __GLXpixmap *pReadGlxPixmap = 0;

+    __GLXcontext *glxc, *prevglxc;

+    GLXContextTag tag = oldContextTag;

+    WindowPtr pWin = NULL;

+    WindowPtr pReadWin = NULL;

+    __glXWindow *pGlxWindow = NULL;

+    __glXWindow *pGlxReadWindow = NULL;

+    __glXPbuffer *pGlxPbuffer = NULL;

+    __glXPbuffer *pGlxReadPbuffer = NULL;

+#ifdef PANORAMIX

+    PanoramiXRes *pXinDraw = NULL;

+    PanoramiXRes *pXinReadDraw = NULL;

+#endif

+    int from_screen = 0;

+    int to_screen = 0;

+    int s, rc;

+

+    /*

+    ** If one is None and the other isn't, it's a bad match.

+    */

+    if ((drawId == None && contextId != None) ||

+	(drawId != None && contextId == None)) {

+	return BadMatch;

+    }

+    

+    /*

+    ** Lookup old context.  If we have one, it must be in a usable state.

+    */

+    if (tag != 0) {

+	prevglxc = __glXLookupContextByTag(cl, tag);

+	if (!prevglxc) {

+	    /*

+	    ** Tag for previous context is invalid.

+	    */

+	    return __glXBadContextTag;

+	}

+    } else {

+	prevglxc = 0;

+    }

+

+    /*

+    ** Lookup new context.  It must not be current for someone else.

+    */

+    if (contextId != None) {

+	glxc = (__GLXcontext *) LookupIDByType(contextId, __glXContextRes);

+	if (!glxc) {

+	    client->errorValue = contextId;

+	    return __glXBadContext;

+	}

+	if ((glxc != prevglxc) && glxc->isCurrent) {

+	    /* Context is current to somebody else */

+	    return BadAccess;

+	}

+    } else {

+	/* Switching to no context.  Ignore new drawable. */

+	glxc = 0;

+    }

+

+    if (drawId != None) {

+	rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixWriteAccess);

+	if (rc == Success) {

+	    if (pDraw->type == DRAWABLE_WINDOW) {

+		/*

+		** Drawable is an X Window.

+		*/

+	        VisualID vid;

+		pWin = (WindowPtr)pDraw;

+		vid = wVisual(pWin);

+

+		new_reply.writeVid = (glxc->pFBConfig ? glxc->pFBConfig->id : vid);

+		new_reply.writeType = GLX_WINDOW_TYPE;

+

+		/*

+		** Check if window and context are similar.

+		*/

+		if ((vid != glxc->pVisual->vid) ||

+		    (pWin->drawable.pScreen != glxc->pScreen)) {

+		    client->errorValue = drawId;

+		    return BadMatch;

+		}

+

+		from_screen = to_screen = pWin->drawable.pScreen->myNum;

+

+	    } else {

+		/*

+		** An X Pixmap is not allowed as a parameter (a GLX Pixmap

+		** is, but it must first be created with glxCreateGLXPixmap).

+		*/

+		client->errorValue = drawId;

+		return __glXBadDrawable;

+	    }

+	}

+

+        if (!pDraw) {

+	    pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,

+							__glXPixmapRes);

+	    if (pGlxPixmap) {

+		/*

+		** Check if pixmap and context are similar.

+		*/

+		if (pGlxPixmap->pScreen != glxc->pScreen ||

+		    pGlxPixmap->pGlxVisual != glxc->pGlxVisual) {

+		    client->errorValue = drawId;

+		    return BadMatch;

+		}

+		pDraw = pGlxPixmap->pDraw;

+

+		new_reply.writeVid = (glxc->pFBConfig ? glxc->pFBConfig->id : 

+		                      pGlxPixmap->pGlxVisual->vid);

+

+		new_reply.writeType = GLX_PIXMAP_TYPE;

+

+		from_screen = to_screen = pGlxPixmap->pScreen->myNum;

+

+	    }

+	}

+

+	if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	   pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);

+            if (pGlxWindow) {

+                /*

+                ** Drawable is a GLXWindow.

+                **

+                ** Check if GLX window and context are similar.

+                */

+                if (pGlxWindow->pScreen != glxc->pScreen ||

+                    pGlxWindow->pGlxFBConfig != glxc->pFBConfig) {

+                    client->errorValue = drawId;

+                    return BadMatch;

+                }

+

+                pDraw = pGlxWindow->pDraw;

+                new_reply.writeVid = pGlxWindow->pGlxFBConfig->id;

+                new_reply.writeType = GLX_GLXWINDOW_TYPE;

+            }

+

+	}

+

+	if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	   pGlxPbuffer = (__glXPbuffer *)LookupIDByType(drawId, __glXPbufferRes);

+	   if (pGlxPbuffer) {

+                if (pGlxPbuffer->pScreen != glxc->pScreen ||

+                    pGlxPbuffer->pFBConfig != glxc->pFBConfig) {

+                    client->errorValue = drawId;

+                    return BadMatch;

+                }

+

+		pDraw = (DrawablePtr)pGlxPbuffer;

+                new_reply.writeVid = pGlxPbuffer->pFBConfig->id;

+                new_reply.writeType = GLX_PBUFFER_TYPE;

+	   }

+	}

+

+	if (!pDraw) {

+	   /*

+    	    ** Drawable is not a Window , GLXWindow or a GLXPixmap.

+	    */

+	   client->errorValue = drawId;

+	   return __glXBadDrawable;

+	}

+

+    } else {

+	pDraw = 0;

+    }

+

+    if (readId != None && readId != drawId ) {

+	rc = dixLookupDrawable(&pReadDraw, readId, client, 0, DixReadAccess);

+	if (rc == Success) {

+	    if (pReadDraw->type == DRAWABLE_WINDOW) {

+		/*

+		** Drawable is an X Window.

+		*/

+	        VisualID vid;

+		pReadWin = (WindowPtr)pDraw;

+		vid = wVisual(pReadWin);

+

+		new_reply.readVid = (glxc->pFBConfig ? glxc->pFBConfig->id : vid);

+		new_reply.readType = GLX_WINDOW_TYPE;

+

+		/*

+		** Check if window and context are similar.

+		*/

+		if ((vid != glxc->pVisual->vid) ||

+		    (pReadWin->drawable.pScreen != glxc->pScreen)) {

+		    client->errorValue = readId;

+		    return BadMatch;

+		}

+

+	    } else {

+

+		/*

+		** An X Pixmap is not allowed as a parameter (a GLX Pixmap

+		** is, but it must first be created with glxCreateGLXPixmap).

+		*/

+		client->errorValue = readId;

+		return __glXBadDrawable;

+	    }

+	}

+

+	if (!pReadDraw) {

+	    pReadGlxPixmap = (__GLXpixmap *) LookupIDByType(readId,

+							__glXPixmapRes);

+	    if (pReadGlxPixmap) {

+		/*

+		** Check if pixmap and context are similar.

+		*/

+		if (pReadGlxPixmap->pScreen != glxc->pScreen ||

+		    pReadGlxPixmap->pGlxVisual != glxc->pGlxVisual) {

+		    client->errorValue = readId;

+		    return BadMatch;

+		}

+		pReadDraw = pReadGlxPixmap->pDraw;

+

+		new_reply.readVid = (glxc->pFBConfig ? glxc->pFBConfig->id :

+		                     pReadGlxPixmap->pGlxVisual->vid );

+		new_reply.readType = GLX_PIXMAP_TYPE;

+

+	    }

+	}

+

+	if (!pReadDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	   pGlxReadWindow = (__glXWindow *)

+                                LookupIDByType(readId, __glXWindowRes);

+            if (pGlxReadWindow) {

+                /*

+                ** Drawable is a GLXWindow.

+                **

+                ** Check if GLX window and context are similar.

+                */

+                if (pGlxReadWindow->pScreen != glxc->pScreen ||

+                    pGlxReadWindow->pGlxFBConfig != glxc->pFBConfig) {

+                    client->errorValue = readId;

+                    return BadMatch;

+                }

+

+                pReadDraw = pGlxReadWindow->pDraw;

+                new_reply.readVid = pGlxReadWindow->pGlxFBConfig->id;

+                new_reply.readType = GLX_GLXWINDOW_TYPE;

+            }

+	}

+

+	if (!pReadDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	   pGlxReadPbuffer = (__glXPbuffer *)LookupIDByType(readId, __glXPbufferRes);

+	   if (pGlxReadPbuffer) {

+                if (pGlxReadPbuffer->pScreen != glxc->pScreen ||

+                    pGlxReadPbuffer->pFBConfig != glxc->pFBConfig) {

+                    client->errorValue = drawId;

+                    return BadMatch;

+                }

+

+		pReadDraw = (DrawablePtr)pGlxReadPbuffer;

+                new_reply.readVid = pGlxReadPbuffer->pFBConfig->id;

+                new_reply.readType = GLX_PBUFFER_TYPE;

+	   }

+	}

+

+	if (!pReadDraw) {

+	   /*

+    	    ** Drawable is neither a Window nor a GLXPixmap.

+	    */

+	   client->errorValue = readId;

+	   return __glXBadDrawable;

+	}

+

+    } else {

+	pReadDraw = pDraw;

+	pReadGlxPixmap = pGlxPixmap;

+	pReadWin = pWin;

+	new_reply.readVid = new_reply.writeVid;

+	new_reply.readType = new_reply.writeType;

+    }

+

+    if (prevglxc) {

+

+	if (prevglxc->pGlxPixmap) {

+	    /*

+	    ** The previous drawable was a glx pixmap, release it.

+	    */

+	    prevglxc->pGlxPixmap->refcnt--;

+	    __glXFreeGLXPixmap( prevglxc->pGlxPixmap );

+	    prevglxc->pGlxPixmap = 0;

+	}

+

+	if (prevglxc->pGlxReadPixmap) {

+	    /*

+	    ** The previous drawable was a glx pixmap, release it.

+	    */

+	    prevglxc->pGlxReadPixmap->refcnt--;

+	    __glXFreeGLXPixmap( prevglxc->pGlxReadPixmap );

+	    prevglxc->pGlxReadPixmap = 0;

+	}

+

+	if (prevglxc->pGlxWindow) {

+	    /*

+	    ** The previous drawable was a glx window, release it.

+	    */

+	    prevglxc->pGlxWindow->refcnt--;

+	    __glXFreeGLXWindow( prevglxc->pGlxWindow );

+	    prevglxc->pGlxWindow = 0;   

+	}

+

+	if (prevglxc->pGlxReadWindow) {

+	    /*

+	    ** The previous drawable was a glx window, release it.

+	    */

+	    prevglxc->pGlxReadWindow->refcnt--;

+	    __glXFreeGLXWindow( prevglxc->pGlxReadWindow );

+	    prevglxc->pGlxReadWindow = 0;   

+	}

+

+	if (prevglxc->pGlxPbuffer) {

+	    /*

+	    ** The previous drawable was a glx Pbuffer, release it.

+	    */

+	    prevglxc->pGlxPbuffer->refcnt--;

+	    __glXFreeGLXPbuffer( prevglxc->pGlxPbuffer );

+	    prevglxc->pGlxPbuffer = 0;   

+	}

+

+	if (prevglxc->pGlxReadPbuffer) {

+	    /*

+	    ** The previous drawable was a glx Pbuffer, release it.

+	    */

+	    prevglxc->pGlxReadPbuffer->refcnt--;

+	    __glXFreeGLXPbuffer( prevglxc->pGlxReadPbuffer );

+	    prevglxc->pGlxReadPbuffer = 0;   

+	}

+

+	ChangeCurrentContext(cl, glxc, tag);

+	ChangeCurrentContext(cl, glxc, tag);

+	StopUsingContext(prevglxc);

+    } else {

+	tag = AddCurrentContext(cl, glxc, pDraw);

+    }

+    if (glxc) {

+

+       glxc->pGlxPixmap = pGlxPixmap;

+       glxc->pGlxReadPixmap = pReadGlxPixmap;

+       glxc->pGlxWindow = pGlxWindow;

+       glxc->pGlxReadWindow = pGlxReadWindow;

+       glxc->pGlxPbuffer = pGlxPbuffer;

+       glxc->pGlxReadPbuffer = pGlxReadPbuffer;

+

+	if (pGlxPixmap) {

+	    pGlxPixmap->refcnt++;

+	}

+

+	if (pReadGlxPixmap) {

+	    pReadGlxPixmap->refcnt++;

+	}

+

+	if (pGlxWindow) {

+	   pGlxWindow->refcnt++;

+	}

+

+	if (pGlxReadWindow) {

+	   pGlxReadWindow->refcnt++;

+	}

+

+	if (pGlxPbuffer) {

+	   pGlxPbuffer->refcnt++;

+	}

+

+	if (pGlxReadPbuffer) {

+	   pGlxReadPbuffer->refcnt++;

+	}

+

+	StartUsingContext(cl, glxc);

+	new_reply.contextTag = tag;

+    } else {

+	new_reply.contextTag = 0;

+    }

+    new_reply.length = 0;

+    new_reply.type = X_Reply;

+    new_reply.sequenceNumber = client->sequence;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+

+       if (pDraw && new_reply.writeType != GLX_PBUFFER_TYPE) {

+	  pXinDraw = (PanoramiXRes *)

+	     SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);

+       }

+

+       if (pReadDraw && pReadDraw != pDraw && 

+	     new_reply.readType != GLX_PBUFFER_TYPE) {

+	  pXinReadDraw = (PanoramiXRes *)

+	     SecurityLookupIDByClass(client, pReadDraw->id, XRC_DRAWABLE, DixReadAccess);

+       }

+       else {

+	  pXinReadDraw = pXinDraw;

+       }

+    }

+#endif

+

+

+    /* send the MakeCurrent request to all required

+     * back-end servers.

+     */

+    for (s = from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+       unsigned int be_draw = None;

+       unsigned int be_read_draw = None;

+

+       if (pGlxPixmap) {

+	   be_draw = pGlxPixmap->be_xids[s];

+       }

+       else if (pGlxPbuffer) {

+	  be_draw = pGlxPbuffer->be_xids[s];

+       }

+#ifdef PANORAMIX

+       else if (pXinDraw) {

+	  dixLookupWindow(&pWin, pXinDraw->info[s].id, client, DixReadAccess);

+       }

+#endif

+       else if (pGlxWindow) {

+	  pWin = (WindowPtr)pGlxWindow->pDraw;

+       }

+

+       if (pWin && be_draw == None) {

+	   be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   if (!be_draw) {

+	      /* it might be that the window did not created yet on the */

+	      /* back-end server (lazy window creation option), force   */

+	      /* creation of the window */

+	      dmxCreateAndRealizeWindow( pWin, TRUE );

+	      be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   }

+       }

+

+       /*

+	* Before sending the MakeCurrent request - sync the

+	* X11 connection to the back-end servers to make sure

+	* that drawable is already created

+	*/

+       dmxSync( dmxScreen, 1 ); 

+

+       if (drawId == readId) {

+	  LockDisplay(dpy);

+	  GetReq(GLXMakeCurrent, be_req);

+	  be_req->reqType = dmxScreen->glxMajorOpcode;

+	  be_req->glxCode = X_GLXMakeCurrent;

+	  be_req->drawable = be_draw;

+	  be_req->context = (unsigned int)(glxc ? glxc->real_ids[s-from_screen] : 0);

+	  be_req->oldContextTag = GetCurrentBackEndTag(cl, tag, s);

+	  if (!_XReply(dpy, (xReply *) &be_reply, 0, False)) {

+

+	     /* The make current failed */

+	     UnlockDisplay(dpy);

+	     SyncHandle();

+	     return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );

+	  }

+

+	  UnlockDisplay(dpy);

+       	  SyncHandle();

+

+	  SetCurrentBackEndTag( cl, tag, s, be_reply.contextTag );

+       }

+       else {

+

+	  if (pReadGlxPixmap) {

+	     be_read_draw = pReadGlxPixmap->be_xids[s];

+	  }

+	  else if (pGlxReadPbuffer) {

+	     be_read_draw = pGlxReadPbuffer->be_xids[s];

+	  }

+#ifdef PANORAMIX

+	  else if (pXinReadDraw) {

+	     dixLookupWindow(&pReadWin, pXinReadDraw->info[s].id, client,

+			     DixReadAccess);

+   	  }

+#endif

+	  else if (pGlxReadWindow) {

+	     pReadWin = (WindowPtr)pGlxReadWindow->pDraw;

+	  }

+

+      	  if (pReadWin && be_read_draw == None) {

+  	     be_read_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pReadWin))->window;

+	   if (!be_read_draw) {

+	      /* it might be that the window did not created yet on the */

+	      /* back-end server (lazy window creation option), force   */

+	      /* creation of the window */

+	      dmxCreateAndRealizeWindow( pReadWin, TRUE );

+	      be_read_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pReadWin))->window;

+              dmxSync( dmxScreen, 1 ); 

+	   }

+     	  }

+

+	  if ( __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+	     LockDisplay(dpy);

+	     GetReq(GLXMakeContextCurrent, be_new_req);

+	     be_new_req->reqType = dmxScreen->glxMajorOpcode;

+	     be_new_req->glxCode = X_GLXMakeContextCurrent;

+	     be_new_req->drawable = be_draw;

+	     be_new_req->readdrawable = be_read_draw;

+	     be_new_req->context = (unsigned int)(glxc ? glxc->real_ids[s-from_screen] : 0);

+	     be_new_req->oldContextTag = GetCurrentBackEndTag(cl, tag, s);

+	     if (!_XReply(dpy, (xReply *) &be_new_reply, 0, False)) {

+

+		/* The make current failed */

+		UnlockDisplay(dpy);

+   		SyncHandle();

+   		return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );

+   	     }

+

+   	     UnlockDisplay(dpy);

+      	     SyncHandle();

+

+   	     SetCurrentBackEndTag( cl, tag, s, be_new_reply.contextTag );

+	  }

+	  else if (glxIsExtensionSupported("GLX_SGI_make_current_read")) {

+	     xGLXMakeCurrentReadSGIReq *ext_req;

+	     xGLXVendorPrivateWithReplyReq *vpreq;

+             xGLXMakeCurrentReadSGIReply ext_reply;

+

+	     LockDisplay(dpy);

+	     GetReqExtra(GLXVendorPrivateWithReply, 

+		         sz_xGLXMakeCurrentReadSGIReq - sz_xGLXVendorPrivateWithReplyReq,

+		         vpreq);

+	     ext_req = (xGLXMakeCurrentReadSGIReq *)vpreq;

+	     ext_req->reqType = dmxScreen->glxMajorOpcode;

+	     ext_req->glxCode = X_GLXVendorPrivateWithReply;

+	     ext_req->vendorCode = X_GLXvop_MakeCurrentReadSGI;

+	     ext_req->drawable = be_draw;

+	     ext_req->readable = be_read_draw;

+	     ext_req->context = (unsigned int)(glxc ? glxc->real_ids[s-from_screen] : 0);

+	     ext_req->oldContextTag = GetCurrentBackEndTag(cl, tag, s);

+	     if (!_XReply(dpy, (xReply *) &ext_reply, 0, False)) {

+

+		/* The make current failed */

+		UnlockDisplay(dpy);

+   		SyncHandle();

+   		return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );

+   	     }

+

+   	     UnlockDisplay(dpy);

+      	     SyncHandle();

+

+   	     SetCurrentBackEndTag( cl, tag, s, ext_reply.contextTag );

+

+	  }

+	  else {

+	     return BadMatch;

+	  }

+       }

+

+       XFlush( dpy );

+    }

+

+    if (client->swapped) {

+	__glXSwapMakeCurrentReply(client, &new_reply);

+    } else {

+	WriteToClient(client, sz_xGLXMakeContextCurrentReply, (char *)&new_reply);

+    }

+

+    return Success;

+}

+

+int __glXMakeCurrent(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;

+

+    return( MakeCurrent(cl, req->drawable, req->drawable,

+	                req->context, req->oldContextTag ) );

+}

+

+int __glXMakeContextCurrent(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc;

+

+    return( MakeCurrent(cl, req->drawable, req->readdrawable,

+	                req->context, req->oldContextTag ) );

+}

+

+int __glXMakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc;

+

+    return( MakeCurrent(cl, req->drawable, req->readable,

+	                req->context, req->oldContextTag ) );

+}

+

+int __glXIsDirect(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;

+    xGLXIsDirectReply reply;

+    __GLXcontext *glxc;

+

+    /*

+    ** Find the GL context.

+    */

+    glxc = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);

+    if (!glxc) {

+	client->errorValue = req->context;

+	return __glXBadContext;

+    }

+

+    reply.isDirect = 0;

+    reply.length = 0;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+	__glXSwapIsDirectReply(client, &reply);

+    } else {

+	WriteToClient(client, sz_xGLXIsDirectReply, (char *)&reply);

+    }

+

+    return Success;

+}

+

+int __glXQueryVersion(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+/*    xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc; */

+    xGLXQueryVersionReply reply;

+

+    /*

+    ** Server should take into consideration the version numbers sent by the

+    ** client if it wants to work with older clients; however, in this

+    ** implementation the server just returns its version number.

+    */

+    reply.majorVersion = __glXVersionMajor;

+    reply.minorVersion = __glXVersionMinor;

+    reply.length = 0;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+	__glXSwapQueryVersionReply(client, &reply);

+    } else {

+	WriteToClient(client, sz_xGLXQueryVersionReply, (char *)&reply);

+    }

+    return Success;

+}

+

+int __glXWaitGL(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;

+    xGLXWaitGLReq *be_req = (xGLXWaitGLReq *)pc;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+    __GLXcontext *glxc = NULL;

+    

+    if (req->contextTag != 0) {

+	glxc = __glXLookupContextByTag(cl, req->contextTag);

+	if (glxc) {

+	   from_screen = to_screen = glxc->pScreen->myNum;

+	}

+    }

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReq(GLXWaitGL,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXWaitGL;

+       be_req->contextTag = (glxc ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+       XSync(dpy, False);

+    }

+    

+    return Success;

+}

+

+int __glXWaitX(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXWaitXReq *req = (xGLXWaitXReq *)pc;

+    xGLXWaitXReq *be_req;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+    __GLXcontext *glxc = NULL;

+    

+    if (req->contextTag != 0) {

+	glxc = __glXLookupContextByTag(cl, req->contextTag);

+	if (glxc) {

+	   from_screen = to_screen = glxc->pScreen->myNum;

+	}

+    }

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       dmxSync( dmxScreen, 1 );

+

+       LockDisplay(dpy);

+       GetReq(GLXWaitX,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXWaitX;

+       be_req->contextTag = (glxc ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+       XFlush( dpy );

+    }

+

+    return Success;

+}

+

+int __glXCopyContext(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXCopyContextReq *be_req;

+    xGLXCopyContextReq *req = (xGLXCopyContextReq *) pc;

+    GLXContextID source = req->source;

+    GLXContextID dest = req->dest;

+    GLXContextTag tag = req->contextTag;

+    unsigned long mask = req->mask;

+    __GLXcontext *src, *dst;

+    int s;

+    int from_screen = 0;

+    int to_screen = 0;

+

+    /*

+    ** Check that each context exists.

+    */

+    src = (__GLXcontext *) LookupIDByType(source, __glXContextRes);

+    if (!src) {

+	client->errorValue = source;

+	return __glXBadContext;

+    }

+    dst = (__GLXcontext *) LookupIDByType(dest, __glXContextRes);

+    if (!dst) {

+	client->errorValue = dest;

+	return __glXBadContext;

+    }

+

+    /*

+    ** They must be in the same address space, and same screen.

+    */

+    if (src->pGlxScreen != dst->pGlxScreen) {

+	client->errorValue = source;

+	return BadMatch;

+    }

+

+    /*

+    ** The destination context must not be current for any client.

+    */

+    if (dst->isCurrent) {

+	client->errorValue = dest;

+	return BadAccess;

+    }

+

+    if (tag) {

+	__GLXcontext *tagcx = __glXLookupContextByTag(cl, tag);

+	

+	if (!tagcx) {

+	    return __glXBadContextTag;

+	}

+	if (tagcx != src) {

+	    /*

+	    ** This would be caused by a faulty implementation of the client

+	    ** library.

+	    */

+	    return BadMatch;

+	}

+    }

+

+    from_screen = to_screen = src->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReq(GLXCopyContext,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXCopyContext;

+       be_req->source = (unsigned int)src->real_ids[s-from_screen];

+       be_req->dest = (unsigned int)dst->real_ids[s-from_screen];

+       be_req->mask = mask;

+       be_req->contextTag = (tag ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);

+       UnlockDisplay(dpy);

+       SyncHandle();

+    }

+

+    return Success;

+}

+

+int __glXGetVisualConfigs(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;

+    xGLXGetVisualConfigsReply reply;

+    __GLXscreenInfo *pGlxScreen;

+    __GLXvisualConfig *pGlxVisual;

+    CARD32 buf[__GLX_TOTAL_CONFIG];

+    unsigned int screen;

+    int i, p;

+

+    screen = req->screen;

+    if (screen > screenInfo.numScreens) {

+	/* The client library must send a valid screen number. */

+	client->errorValue = screen;

+	return BadValue;

+    }

+    pGlxScreen = &__glXActiveScreens[screen];

+

+    reply.numVisuals = pGlxScreen->numGLXVisuals;

+    reply.numProps = __GLX_TOTAL_CONFIG;

+    reply.length = (pGlxScreen->numGLXVisuals * __GLX_SIZE_CARD32 *

+		    __GLX_TOTAL_CONFIG) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply);

+

+    for (i=0; i < pGlxScreen->numVisuals; i++) {

+	pGlxVisual = &pGlxScreen->pGlxVisual[i];

+	if (!pGlxScreen->isGLXvis[i] || pGlxVisual->vid == 0) {

+	    /* not a usable visual */

+	    continue;

+	}

+	p = 0;

+	buf[p++] = pGlxVisual->vid;

+	buf[p++] = pGlxVisual->class;

+	buf[p++] = pGlxVisual->rgba;

+

+	buf[p++] = pGlxVisual->redSize;

+	buf[p++] = pGlxVisual->greenSize;

+	buf[p++] = pGlxVisual->blueSize;

+	buf[p++] = pGlxVisual->alphaSize;

+	buf[p++] = pGlxVisual->accumRedSize;

+	buf[p++] = pGlxVisual->accumGreenSize;

+	buf[p++] = pGlxVisual->accumBlueSize;

+	buf[p++] = pGlxVisual->accumAlphaSize;

+

+	buf[p++] = pGlxVisual->doubleBuffer;

+	buf[p++] = pGlxVisual->stereo;

+

+	buf[p++] = pGlxVisual->bufferSize;

+	buf[p++] = pGlxVisual->depthSize;

+	buf[p++] = pGlxVisual->stencilSize;

+	buf[p++] = pGlxVisual->auxBuffers;

+	buf[p++] = pGlxVisual->level;

+	/* 

+	** Add token/value pairs for extensions.

+	*/

+	buf[p++] = GLX_VISUAL_CAVEAT_EXT;

+	buf[p++] = pGlxVisual->visualRating;

+	buf[p++] = GLX_TRANSPARENT_TYPE_EXT;

+	buf[p++] = pGlxVisual->transparentPixel;

+	buf[p++] = GLX_TRANSPARENT_RED_VALUE_EXT;

+	buf[p++] = pGlxVisual->transparentRed;

+	buf[p++] = GLX_TRANSPARENT_GREEN_VALUE_EXT;

+	buf[p++] = pGlxVisual->transparentGreen;

+	buf[p++] = GLX_TRANSPARENT_BLUE_VALUE_EXT;

+	buf[p++] = pGlxVisual->transparentBlue;

+	buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE_EXT;

+	buf[p++] = pGlxVisual->transparentAlpha;

+	buf[p++] = GLX_TRANSPARENT_INDEX_VALUE_EXT;

+	buf[p++] = pGlxVisual->transparentIndex;

+	buf[p++] = GLX_SAMPLES_SGIS;

+	buf[p++] = pGlxVisual->multiSampleSize;

+	buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;

+	buf[p++] = pGlxVisual->nMultiSampleBuffers;

+	buf[p++] = GLX_VISUAL_SELECT_GROUP_SGIX;

+	buf[p++] = pGlxVisual->visualSelectGroup;

+

+	WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_TOTAL_CONFIG, 

+		(char *)buf);

+    }

+    return Success;

+}

+

+/*

+** Create a GLX Pixmap from an X Pixmap.

+*/

+static int CreateGLXPixmap(__GLXclientState *cl,

+                    VisualID visual, GLXFBConfigID fbconfigId,

+		    int screenNum, XID pixmapId, XID glxpixmapId )

+{

+    ClientPtr client = cl->client;

+    xGLXCreateGLXPixmapReq *be_req;

+    xGLXCreatePixmapReq *be_new_req;

+    DrawablePtr pDraw;

+    ScreenPtr pScreen;

+    VisualPtr pVisual;

+    __GLXpixmap *pGlxPixmap;

+    __GLXscreenInfo *pGlxScreen;

+    __GLXvisualConfig *pGlxVisual;

+    __GLXFBConfig *pFBConfig;

+    int i, s, rc;

+    int from_screen, to_screen;

+#ifdef PANORAMIX

+    PanoramiXRes *pXinDraw = NULL;

+#endif

+

+    rc = dixLookupDrawable(&pDraw, pixmapId, client, M_DRAWABLE_PIXMAP,

+			   DixAddAccess);

+    if (rc != Success)

+	return rc;

+

+    /*

+    ** Check if screen of visual matches screen of pixmap.

+    */

+    pScreen = pDraw->pScreen;

+    if (screenNum != pScreen->myNum) {

+	return BadMatch;

+    }

+

+    if (fbconfigId == NULL && visual == NULL) {

+	  return BadValue;

+    }

+

+    if (fbconfigId != None) {

+       pFBConfig = glxLookupFBConfig( fbconfigId );

+       if (!pFBConfig) {

+	  client->errorValue = fbconfigId;

+	  return BadValue;

+       }

+       visual = pFBConfig->associatedVisualId;

+    }

+    else {

+       pFBConfig = NULL;

+    }

+

+    if (visual != None) {

+       /*

+	** Find the VisualRec for this visual.

+	*/

+       pVisual = pScreen->visuals;

+       for (i=0; i < pScreen->numVisuals; i++, pVisual++) {

+	  if (pVisual->vid == visual) {

+	     break;

+	  }

+       }

+       if (i == pScreen->numVisuals) {

+	  client->errorValue = visual;

+	  return BadValue;

+       }

+       /*

+	** Check if depth of visual matches depth of pixmap.

+	*/

+       if (pVisual->nplanes != pDraw->depth) {

+	  client->errorValue = visual;

+	  return BadMatch;

+       }

+

+       /*

+	** Get configuration of the visual.

+	*/

+       pGlxScreen = &__glXActiveScreens[screenNum];

+       pGlxVisual = pGlxScreen->pGlxVisual;

+       for (i = 0; i < pGlxScreen->numVisuals; i++, pGlxVisual++) {

+	  if (pGlxVisual->vid == visual) {

+	     break;

+	  }

+       }

+       if (i == pGlxScreen->numVisuals) {

+	  /*

+	   ** Visual not support on this screen by this OpenGL implementation.

+	   */

+	  client->errorValue = visual;

+	  return BadValue;

+       }

+

+

+       /* find the FBConfig for that visual (if any) */

+       if ( pFBConfig == NULL ) {

+	   pFBConfig = glxLookupFBConfigByVID( visual );

+

+	   if ( pFBConfig == NULL ) {

+	      /*

+               * visual does not have an FBConfig ???

+	      client->errorValue = visual;

+	      return BadValue;

+	       */

+	   }

+       }

+    }

+    else {

+       pVisual = NULL;

+       pGlxVisual = NULL;

+    }

+

+    pGlxPixmap = (__GLXpixmap *) __glXMalloc(sizeof(__GLXpixmap));

+    if (!pGlxPixmap) {

+	return BadAlloc;

+    }

+    pGlxPixmap->be_xids = (XID *) __glXMalloc(sizeof(XID) * screenInfo.numScreens);

+    if (!pGlxPixmap->be_xids) {

+        __glXFree( pGlxPixmap );

+	return BadAlloc;

+    }

+

+    pGlxPixmap->pDraw = pDraw;

+    pGlxPixmap->pGlxScreen = pGlxScreen;

+    pGlxPixmap->pGlxVisual = pGlxVisual;

+    pGlxPixmap->pFBConfig = pFBConfig;

+    pGlxPixmap->pScreen = pScreen;

+    pGlxPixmap->idExists = True;

+    pGlxPixmap->refcnt = 0;

+

+    /*

+    ** Bump the ref count on the X pixmap so it won't disappear.

+    */

+    ((PixmapPtr) pDraw)->refcnt++;

+

+    /*

+     * send the request to the back-end server(s)

+     */

+    from_screen = to_screen = screenNum;

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+

+       pXinDraw = (PanoramiXRes *)

+	  SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+       Pixmap  be_pixmap;

+       DrawablePtr pRealDraw = pDraw;

+

+#ifdef PANORAMIX

+       if (pXinDraw) {

+	   dixLookupDrawable(&pRealDraw, pXinDraw->info[s].id, client, 0,

+			     DixAddAccess);

+       }

+#endif

+

+       be_pixmap = (DMX_GET_PIXMAP_PRIV((PixmapPtr)pRealDraw))->pixmap;

+

+       /* make sure pixmap already created on back-end */

+       dmxSync( dmxScreen, 1 );

+

+       if ( pFBConfig && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+       	  __GLXFBConfig *be_FBConfig = glxLookupBackEndFBConfig( pFBConfig->id, s );

+	  

+	  LockDisplay(dpy);

+	  pGlxPixmap->be_xids[s] = XAllocID(dpy);

+	  GetReq(GLXCreatePixmap,be_new_req);

+	  be_new_req->reqType = dmxScreen->glxMajorOpcode;

+	  be_new_req->glxCode = X_GLXCreatePixmap;

+	  be_new_req->screen = DefaultScreen(dpy);

+	  be_new_req->fbconfig = be_FBConfig->id;

+	  be_new_req->pixmap = (unsigned int)be_pixmap;

+	  be_new_req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];

+	  be_new_req->numAttribs = 0;

+	  UnlockDisplay(dpy);

+	  SyncHandle();

+       }

+       else if (pFBConfig && glxIsExtensionSupported("GLX_SGIX_fbconfig")) {

+	  __GLXFBConfig *be_FBConfig = glxLookupBackEndFBConfig( pFBConfig->id, s );

+	  xGLXCreateGLXPixmapWithConfigSGIXReq *ext_req;

+	  xGLXVendorPrivateReq *vpreq;

+	  

+	  LockDisplay(dpy);

+	  pGlxPixmap->be_xids[s] = XAllocID(dpy);

+	  GetReqExtra(GLXVendorPrivate,

+		      sz_xGLXCreateGLXPixmapWithConfigSGIXReq-sz_xGLXVendorPrivateReq,

+		      vpreq);

+	  ext_req = (xGLXCreateGLXPixmapWithConfigSGIXReq *)vpreq;

+	  ext_req->reqType = dmxScreen->glxMajorOpcode;

+	  ext_req->glxCode = X_GLXVendorPrivate;

+	  ext_req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;

+	  ext_req->screen = DefaultScreen(dpy);

+	  ext_req->fbconfig = be_FBConfig->id;

+	  ext_req->pixmap = (unsigned int)be_pixmap;

+	  ext_req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];

+	  UnlockDisplay(dpy);

+	  SyncHandle();

+       }

+       else if (pGlxVisual) {

+	  LockDisplay(dpy);

+	  pGlxPixmap->be_xids[s] = XAllocID(dpy);

+	  GetReq(GLXCreateGLXPixmap,be_req);

+	  be_req->reqType = dmxScreen->glxMajorOpcode;

+	  be_req->glxCode = X_GLXCreateGLXPixmap;

+	  be_req->screen = DefaultScreen(dpy);

+	  be_req->visual = (unsigned int)glxMatchGLXVisualInConfigList( 

+	 	pGlxVisual,

+		dmxScreen->glxVisuals,

+		dmxScreen->numGlxVisuals );

+   	  be_req->pixmap = (unsigned int)be_pixmap;

+      	  be_req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];

+	  UnlockDisplay(dpy);

+	  SyncHandle();

+       }

+       else {

+	  client->errorValue = ( visual ? visual : fbconfigId );

+          __glXFree( pGlxPixmap );

+	  return BadValue;

+       }

+

+       XFlush( dpy );

+    }

+

+    if (!(AddResource(glxpixmapId, __glXPixmapRes, pGlxPixmap))) {

+        __glXFree( pGlxPixmap );

+	return BadAlloc;

+    }

+

+    return Success;

+}

+

+int __glXCreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;

+

+    return( CreateGLXPixmap(cl, req->visual, None,

+	                    req->screen, req->pixmap, req->glxpixmap) );

+}

+

+int __glXCreatePixmap(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc;

+

+    return( CreateGLXPixmap(cl, None, req->fbconfig,

+	                    req->screen, req->pixmap, req->glxpixmap) );

+}

+

+int __glXDestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;

+    XID glxpixmap = req->glxpixmap;

+    __GLXpixmap *pGlxPixmap;

+    int s;

+    int from_screen, to_screen;

+

+    /*

+    ** Check if it's a valid GLX pixmap.

+    */

+    pGlxPixmap = (__GLXpixmap *)LookupIDByType(glxpixmap, __glXPixmapRes);

+    if (!pGlxPixmap) {

+	client->errorValue = glxpixmap;

+	return __glXBadPixmap;

+    }

+    FreeResource(glxpixmap, FALSE);

+

+    /*

+     * destroy the pixmap on the back-end server(s).

+     */

+    from_screen = to_screen = pGlxPixmap->pDraw->pScreen->myNum;

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       /* make sure pixmap exist in back-end */

+       dmxSync( dmxScreen, 1 );

+

+       LockDisplay(dpy);

+       GetReq(GLXDestroyGLXPixmap,req);

+       req->reqType = dmxScreen->glxMajorOpcode;

+       req->glxCode = X_GLXDestroyGLXPixmap;

+       req->glxpixmap = (unsigned int)pGlxPixmap->be_xids[s];

+       UnlockDisplay(dpy);

+       SyncHandle();

+    }

+

+    

+    return Success;

+}

+

+/*****************************************************************************/

+

+/*

+** NOTE: There is no portable implementation for swap buffers as of

+** this time that is of value.  Consequently, this code must be

+** implemented by somebody other than SGI.

+*/

+int __glXDoSwapBuffers(__GLXclientState *cl, XID drawId, GLXContextTag tag)

+{

+    ClientPtr client = cl->client;

+    DrawablePtr pDraw;

+    xGLXSwapBuffersReq *be_req;

+    WindowPtr pWin = NULL;

+    __GLXpixmap *pGlxPixmap = NULL;

+    __GLXcontext *glxc = NULL;

+#ifdef PANORAMIX

+    PanoramiXRes *pXinDraw = NULL;

+#endif

+    __glXWindow *pGlxWindow = NULL;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s, rc;

+    

+    /*

+    ** Check that the GLX drawable is valid.

+    */

+    rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixWriteAccess);

+    if (rc == Success) {

+        from_screen = to_screen = pDraw->pScreen->myNum;

+

+	if (pDraw->type == DRAWABLE_WINDOW) {

+	    /*

+	    ** Drawable is an X window.

+	    */

+	   pWin = (WindowPtr)pDraw;

+	} else {

+	    /*

+	    ** Drawable is an X pixmap, which is not allowed.

+	    */

+	    client->errorValue = drawId;

+	    return __glXBadDrawable;

+	}

+    } 

+

+    if (!pDraw) {

+	pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,

+						    __glXPixmapRes);

+	if (pGlxPixmap) {

+	    /*

+	    ** Drawable is a GLX pixmap.

+	    */

+	   pDraw = pGlxPixmap->pDraw;

+	   from_screen = to_screen = pGlxPixmap->pScreen->myNum;

+	}

+    }

+

+    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+       pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);

+       if (pGlxWindow) {

+	  /*

+	   ** Drawable is a GLXWindow.

+	   */

+	  pDraw = pGlxWindow->pDraw;

+	  from_screen = to_screen = pGlxWindow->pScreen->myNum;

+       }

+    }

+

+    if (!pDraw) {

+       /*

+	** Drawable is neither a X window nor a GLX pixmap.

+	*/

+       client->errorValue = drawId;

+       return __glXBadDrawable;

+    }

+

+    if (tag) {

+	glxc = __glXLookupContextByTag(cl, tag);

+	if (!glxc) {

+	    return __glXBadContextTag;

+	}

+    }

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+       pXinDraw = (PanoramiXRes *)

+        SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);

+    }

+#endif

+

+    /* If requested, send a glFinish to all back-end servers before swapping. */

+    if (dmxGLXFinishSwap) {

+	for (s=from_screen; s<=to_screen; s++) {

+	    Display *dpy = GetBackEndDisplay(cl,s);

+	    DMXScreenInfo *dmxScreen = &dmxScreens[s];

+	    xGLXSingleReq *finishReq;

+	    xGLXSingleReply reply;

+

+#define X_GLXSingle 0    /* needed by GetReq below */

+

+	    LockDisplay(dpy);

+	    GetReq(GLXSingle,finishReq);

+	    finishReq->reqType = dmxScreen->glxMajorOpcode;

+	    finishReq->glxCode = X_GLsop_Finish;

+	    finishReq->contextTag = (tag ? GetCurrentBackEndTag(cl,tag,s) : 0);

+	    (void) _XReply(dpy, (xReply*) &reply, 0, False);

+	    UnlockDisplay(dpy);

+	    SyncHandle();

+	}

+    }

+

+    /* If requested, send an XSync to all back-end servers before swapping. */

+    if (dmxGLXSyncSwap) {

+	for (s=from_screen; s<=to_screen; s++)

+	    XSync(GetBackEndDisplay(cl,s), False);

+    }

+

+

+    /* send the SwapBuffers request to all back-end servers */

+

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+       unsigned int be_draw = 0;

+

+       if (pGlxPixmap) {

+	  be_draw = (unsigned int)pGlxPixmap->be_xids[s];

+       }

+#ifdef PANORAMIX

+       else if (pXinDraw) {

+	  dixLookupWindow(&pWin, pXinDraw->info[s].id, client, DixReadAccess);

+       }

+#endif

+       else if (pGlxWindow) {

+	  pWin = (WindowPtr)pGlxWindow->pDraw;

+       }

+

+       if (pWin && !be_draw) {

+	   be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   if (!be_draw) {

+	      /* it might be that the window did not created yet on the */

+	      /* back-end server (lazy window creation option), force   */

+	      /* creation of the window */

+	      dmxCreateAndRealizeWindow( pWin, TRUE );

+	      be_draw = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   }

+       }

+

+       dmxSync( dmxScreen, 1 );

+

+       LockDisplay(dpy);

+       GetReq(GLXSwapBuffers,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXSwapBuffers;

+       be_req->drawable = be_draw;

+       be_req->contextTag = ( tag ? GetCurrentBackEndTag(cl,tag,s) : 0 );

+       UnlockDisplay(dpy);

+       SyncHandle();

+       XFlush(dpy);

+    }

+

+    return Success;

+}

+

+int __glXSwapBuffers(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    DrawablePtr pDraw;

+    xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;

+    GLXContextTag tag = req->contextTag;

+    XID drawId = req->drawable;

+    __GLXpixmap *pGlxPixmap = NULL;

+    __GLXcontext *glxc = NULL;

+    __glXWindow *pGlxWindow = NULL;

+    int rc;

+    

+    /*

+    ** Check that the GLX drawable is valid.

+    */

+    rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixWriteAccess);

+    if (rc == Success) {

+	if (pDraw->type != DRAWABLE_WINDOW) {

+	    /*

+	    ** Drawable is an X pixmap, which is not allowed.

+	    */

+	    client->errorValue = drawId;

+	    return __glXBadDrawable;

+	}

+    } 

+

+    if (!pDraw) {

+	pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,

+						    __glXPixmapRes);

+	if (pGlxPixmap) {

+	    /*

+	    ** Drawable is a GLX pixmap.

+	    */

+	   pDraw = pGlxPixmap->pDraw;

+	}

+    }

+

+    if (!pDraw && __GLX_IS_VERSION_SUPPORTED(1,3) ) {

+       pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);

+       if (pGlxWindow) {

+	  /*

+	   ** Drawable is a GLXWindow.

+	   */

+	  pDraw = pGlxWindow->pDraw;

+       }

+    }

+

+    if (!pDraw) {

+       /*

+	** Drawable is neither a X window nor a GLX pixmap.

+	*/

+       client->errorValue = drawId;

+       return __glXBadDrawable;

+    }

+

+    if (tag) {

+	glxc = __glXLookupContextByTag(cl, tag);

+	if (!glxc) {

+	    return __glXBadContextTag;

+	}

+    }

+

+    if (pDraw &&

+	pDraw->type == DRAWABLE_WINDOW &&

+	DMX_GET_WINDOW_PRIV((WindowPtr)pDraw)->swapGroup) {

+	return SGSwapBuffers(cl, drawId, tag, pDraw);

+    }

+

+    return __glXDoSwapBuffers(cl, drawId, tag);

+}

+

+

+/************************************************************************/

+

+/*

+** Render and Renderlarge are not in the GLX API.  They are used by the GLX

+** client library to send batches of GL rendering commands.

+*/

+

+/*

+** Execute all the drawing commands in a request.

+*/

+int __glXRender(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXRenderReq *req;

+    xGLXRenderReq *be_req;

+    int size;

+    __GLXcontext *glxc;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+

+    /*

+    ** NOTE: much of this code also appears in the byteswapping version of this

+    ** routine, __glXSwapRender().  Any changes made here should also be

+    ** duplicated there.

+    */

+    

+    req = (xGLXRenderReq *) pc;

+

+    glxc = __glXLookupContextByTag(cl, req->contextTag);

+    if (!glxc) {

+	return 0;

+    }

+    from_screen = to_screen = glxc->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    pc += sz_xGLXRenderReq;

+    size = (req->length << 2) - sz_xGLXRenderReq;

+

+    /*

+     * just forward the request to back-end server(s)

+     */

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReq(GLXRender,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXRender;

+       be_req->length = req->length;

+       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);

+       _XSend(dpy, (const char *)pc, size);

+       UnlockDisplay(dpy);

+       SyncHandle();

+    }

+

+    return Success;

+}

+

+/*

+** Execute a large rendering request (one that spans multiple X requests).

+*/

+int __glXRenderLarge(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXRenderLargeReq *req;

+    xGLXRenderLargeReq *be_req;

+    __GLXcontext *glxc;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+

+    /*

+    ** NOTE: much of this code also appears in the byteswapping version of this

+    ** routine, __glXSwapRenderLarge().  Any changes made here should also be

+    ** duplicated there.

+    */

+    

+    req = (xGLXRenderLargeReq *) pc;

+    glxc = __glXLookupContextByTag(cl, req->contextTag);

+    if (!glxc) {

+	return 0;

+    }

+    from_screen = to_screen = glxc->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    pc += sz_xGLXRenderLargeReq;

+

+    /*

+     * just forward the request to back-end server(s)

+     */

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       GetReq(GLXRenderLarge,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXRenderLarge;

+       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);

+       be_req->length = req->length;

+       be_req->requestNumber = req->requestNumber;

+       be_req->requestTotal = req->requestTotal;

+       be_req->dataBytes = req->dataBytes;

+       Data(dpy, (const char *)pc, req->dataBytes);

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+    }

+

+    return Success;

+}

+

+

+/************************************************************************/

+

+int __glXVendorPrivate(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXVendorPrivateReq *req;

+

+    req = (xGLXVendorPrivateReq *) pc;

+

+    switch( req->vendorCode ) {

+

+       case X_GLvop_DeleteTexturesEXT:

+	  return __glXVForwardSingleReq( cl, pc );

+	  break;

+

+       case X_GLXvop_SwapIntervalSGI:

+	  if (glxIsExtensionSupported("SGI_swap_control")) {

+	     return __glXVForwardSingleReq( cl, pc );

+	  }

+	  else {

+	     return Success;

+	  }

+	  break;

+

+#if 0 /* glx 1.3 */

+       case X_GLXvop_CreateGLXVideoSourceSGIX:

+	  break;

+       case X_GLXvop_DestroyGLXVideoSourceSGIX:

+	  break;

+       case X_GLXvop_CreateGLXPixmapWithConfigSGIX:

+	  break;

+       case X_GLXvop_DestroyGLXPbufferSGIX:

+	  break;

+       case X_GLXvop_ChangeDrawableAttributesSGIX:

+	  break;

+#endif

+

+       case X_GLXvop_BindSwapBarrierSGIX:

+	  return __glXBindSwapBarrierSGIX( cl, pc );

+	  break;

+

+       case X_GLXvop_JoinSwapGroupSGIX:

+	  return __glXJoinSwapGroupSGIX( cl, pc );

+	  break;

+

+       case X_GLXvop_CreateContextWithConfigSGIX:

+	  return __glXCreateContextWithConfigSGIX( cl, pc );

+	  break;

+

+       default:

+	  /*

+	   ** unsupported private request

+	   */

+	  cl->client->errorValue = req->vendorCode;

+	  return __glXUnsupportedPrivateRequest;

+    }

+

+    cl->client->errorValue = req->vendorCode;

+    return __glXUnsupportedPrivateRequest;

+

+}

+

+int __glXVendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXVendorPrivateWithReplyReq *req;

+

+    req = (xGLXVendorPrivateWithReplyReq *) pc;

+

+    switch( req->vendorCode ) {

+

+       case X_GLvop_GetConvolutionFilterEXT:

+       case X_GLvop_GetConvolutionParameterfvEXT:

+       case X_GLvop_GetConvolutionParameterivEXT:

+       case X_GLvop_GetSeparableFilterEXT:

+       case X_GLvop_GetHistogramEXT:

+       case X_GLvop_GetHistogramParameterivEXT:

+       case X_GLvop_GetMinmaxEXT:

+       case X_GLvop_GetMinmaxParameterfvEXT:

+       case X_GLvop_GetMinmaxParameterivEXT:

+       case X_GLvop_AreTexturesResidentEXT:

+       case X_GLvop_IsTextureEXT:

+	  return( __glXVForwardPipe0WithReply(cl, pc) );

+	  break;

+

+       case X_GLvop_GenTexturesEXT:

+	  return( __glXVForwardAllWithReply(cl, pc) );

+	  break;

+

+

+#if 0 /* glx1.3 */

+       case X_GLvop_GetDetailTexFuncSGIS:

+       case X_GLvop_GetSharpenTexFuncSGIS:

+       case X_GLvop_GetColorTableSGI:

+       case X_GLvop_GetColorTableParameterfvSGI:

+       case X_GLvop_GetColorTableParameterivSGI:

+       case X_GLvop_GetTexFilterFuncSGIS:

+       case X_GLvop_GetInstrumentsSGIX:

+       case X_GLvop_InstrumentsBufferSGIX:

+       case X_GLvop_PollInstrumentsSGIX:

+       case X_GLvop_FlushRasterSGIX:

+       case X_GLXvop_CreateGLXPbufferSGIX:

+       case X_GLXvop_GetDrawableAttributesSGIX:

+       case X_GLXvop_QueryHyperpipeNetworkSGIX:

+       case X_GLXvop_QueryHyperpipeConfigSGIX:

+       case X_GLXvop_HyperpipeConfigSGIX:

+       case X_GLXvop_DestroyHyperpipeConfigSGIX:

+#endif

+       case X_GLXvop_QueryMaxSwapBarriersSGIX:

+	  return( __glXQueryMaxSwapBarriersSGIX(cl, pc) );

+	  break;

+

+       case X_GLXvop_GetFBConfigsSGIX:

+	  return( __glXGetFBConfigsSGIX(cl, pc) );

+	  break;

+

+       case X_GLXvop_MakeCurrentReadSGI:

+	  return( __glXMakeCurrentReadSGI(cl, pc) );

+	  break;

+

+       case X_GLXvop_QueryContextInfoEXT:

+	  return( __glXQueryContextInfoEXT(cl,pc) );

+	  break;

+

+       default:

+	  /*

+	   ** unsupported private request

+	   */

+	  cl->client->errorValue = req->vendorCode;

+	  return __glXUnsupportedPrivateRequest;

+    }

+

+}

+

+int __glXQueryExtensionsString(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc;

+    xGLXQueryExtensionsStringReply reply;

+    GLint screen;

+    size_t length;

+    int len, numbytes;

+    char *be_buf;

+

+#ifdef FWD_QUERY_REQ

+    xGLXQueryExtensionsStringReq *be_req;

+    xGLXQueryExtensionsStringReply be_reply;

+    DMXScreenInfo *dmxScreen;

+    Display *dpy;

+    int slop;

+#endif

+

+    screen = req->screen;

+

+    /*

+    ** Check if screen exists.

+    */

+    if ((screen < 0) || (screen >= screenInfo.numScreens)) {

+	client->errorValue = screen;

+	return BadValue;

+    }

+

+#ifdef FWD_QUERY_REQ

+    dmxScreen = &dmxScreens[screen];

+

+    /* Send the glXQueryServerString request */

+    dpy = GetBackEndDisplay(cl,screen);

+    LockDisplay(dpy);

+    GetReq(GLXQueryExtensionsString,be_req);

+    be_req->reqType = dmxScreen->glxMajorOpcode;

+    be_req->glxCode = X_GLXQueryServerString;

+    be_req->screen = DefaultScreen(dpy);

+    _XReply(dpy, (xReply*) &be_reply, 0, False);

+    len = (int)be_reply.length;

+    numbytes = (int)be_reply.n;

+    slop = numbytes * __GLX_SIZE_INT8 & 3;

+    be_buf = (char *)malloc(numbytes);

+    if (!be_buf) {

+        /* Throw data on the floor */

+        _XEatData(dpy, len);

+    } else {

+        _XRead(dpy, (char *)be_buf, numbytes);

+        if (slop) _XEatData(dpy,4-slop);

+    }

+    UnlockDisplay(dpy);

+    SyncHandle();

+

+#else

+

+    be_buf = __glXGetServerString(GLX_EXTENSIONS);

+    numbytes = strlen(be_buf) + 1;

+    len = __GLX_PAD(numbytes) >> 2;

+

+#endif

+

+    length = len;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = len;

+    reply.n = numbytes;

+

+    if (client->swapped) {

+        glxSwapQueryExtensionsStringReply(client, &reply, be_buf);

+    } else {

+        WriteToClient(client, sz_xGLXQueryExtensionsStringReply,(char *)&reply);

+        WriteToClient(client, (int)(length << 2), (char *)be_buf);

+    }

+

+    return Success;

+}

+

+int __glXQueryServerString(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc;

+    xGLXQueryServerStringReply reply;

+    int name;

+    GLint screen;

+    size_t length;

+    int len, numbytes;

+    char *be_buf;

+#ifdef FWD_QUERY_REQ

+    xGLXQueryServerStringReq *be_req;

+    xGLXQueryServerStringReply be_reply;

+    DMXScreenInfo *dmxScreen;

+    Display *dpy;

+    int  slop;

+#endif

+

+    name = req->name;

+    screen = req->screen;

+    /*

+    ** Check if screen exists.

+    */

+    if ((screen < 0) || (screen >= screenInfo.numScreens)) {

+	client->errorValue = screen;

+	return BadValue;

+    }

+

+#ifdef FWD_QUERY_REQ

+    dmxScreen = &dmxScreens[screen];

+

+    /* Send the glXQueryServerString request */

+    dpy = GetBackEndDisplay(cl,screen);

+    LockDisplay(dpy);

+    GetReq(GLXQueryServerString,be_req);

+    be_req->reqType = dmxScreen->glxMajorOpcode;

+    be_req->glxCode = X_GLXQueryServerString;

+    be_req->screen = DefaultScreen(dpy);

+    be_req->name = name;

+    _XReply(dpy, (xReply*) &be_reply, 0, False);

+    len = (int)be_reply.length;

+    numbytes = (int)be_reply.n;

+    slop = numbytes * __GLX_SIZE_INT8 & 3;

+    be_buf = (char *)malloc(numbytes);

+    if (!be_buf) {

+        /* Throw data on the floor */

+        _XEatData(dpy, len);

+    } else {

+        _XRead(dpy, (char *)be_buf, numbytes);

+        if (slop) _XEatData(dpy,4-slop);

+    }

+    UnlockDisplay(dpy);

+    SyncHandle();

+

+#else

+    be_buf = __glXGetServerString(name);

+    numbytes = strlen(be_buf) + 1;

+    len = __GLX_PAD(numbytes) >> 2;

+#endif

+

+    length = len;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = length;

+    reply.n = numbytes;

+

+    if (client->swapped) {

+        glxSwapQueryServerStringReply(client, &reply, be_buf);

+    } else {

+        WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)&reply);

+        WriteToClient(client, (int)(length << 2), be_buf);

+    }

+

+    return Success;

+}

+

+int __glXClientInfo(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;

+    xGLXClientInfoReq *be_req;

+    const char *buf;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+   

+    cl->GLClientmajorVersion = req->major;

+    cl->GLClientminorVersion = req->minor;

+    if (cl->GLClientextensions) __glXFree(cl->GLClientextensions);

+    buf = (const char *)(req+1);

+    cl->GLClientextensions = strdup(buf);

+

+    to_screen = screenInfo.numScreens - 1;

+

+    for (s=from_screen; s<=to_screen; s++)

+    {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReq(GLXClientInfo,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXClientInfo;

+       be_req->major = req->major;

+       be_req->minor = req->minor;

+       be_req->length = req->length;

+       be_req->numbytes = req->numbytes;

+       Data(dpy, buf, req->numbytes);

+

+       UnlockDisplay(dpy);

+       SyncHandle();

+    }

+

+    return Success;

+}

+

+int __glXUseXFont(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXUseXFontReq *req;

+    xGLXUseXFontReq *be_req;

+    FontPtr pFont;

+    __GLXcontext *glxc = NULL;

+    int from_screen = 0;

+    int to_screen = 0;

+    int s;

+    dmxFontPrivPtr  pFontPriv;

+    DMXScreenInfo *dmxScreen;

+    Display *dpy;

+

+    req = (xGLXUseXFontReq *) pc;

+

+    if (req->contextTag != 0) {

+	glxc = __glXLookupContextByTag(cl, req->contextTag);

+	if (glxc) {

+	   from_screen = to_screen = glxc->pScreen->myNum;

+	}

+    }

+

+    /*

+    ** Font can actually be either the ID of a font or the ID of a GC

+    ** containing a font.

+    */

+    pFont = (FontPtr)LookupIDByType(req->font, RT_FONT);

+    if (!pFont) {

+        GC *pGC = (GC *)LookupIDByType(req->font, RT_GC);

+        if (!pGC) {

+	    client->errorValue = req->font;

+            return BadFont;

+	}

+	pFont = pGC->font;

+    }

+

+    pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex);

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+

+    for (s=from_screen; s<=to_screen; s++) {

+       dmxScreen = &dmxScreens[s];

+       dpy = GetBackEndDisplay(cl,s);

+

+       dmxSync( dmxScreen, 1 );

+

+       LockDisplay(dpy);

+       GetReq(GLXUseXFont,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXUseXFont;

+       be_req->contextTag = (glxc ? GetCurrentBackEndTag(cl,req->contextTag,s) : 0);

+       be_req->font = pFontPriv->font[s]->fid;

+       be_req->first = req->first;

+       be_req->count = req->count;

+       be_req->listBase = req->listBase;

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+       XSync( dpy, False );

+    }

+

+    return Success;

+}

+

+/*

+ * start GLX 1.3 here

+ */

+

+int __glXGetFBConfigs(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc;

+    xGLXGetFBConfigsReply reply;

+    __GLXFBConfig *pFBConfig;

+    CARD32 buf[2 * __GLX_TOTAL_FBCONFIG_PROPS];

+    int numAttribs = __GLX_TOTAL_FBCONFIG_PROPS;

+    unsigned int screen = req->screen;

+    int numFBConfigs, i, p;

+    __GLXscreenInfo *pGlxScreen;

+

+    if (screen > screenInfo.numScreens) {

+	/* The client library must send a valid screen number. */

+	client->errorValue = screen;

+	return BadValue;

+    }

+

+    pGlxScreen = &__glXActiveScreens[screen];

+    numFBConfigs = __glXNumFBConfigs;

+

+    reply.numFBConfigs = numFBConfigs;

+    reply.numAttribs = numAttribs;

+    reply.length = (numFBConfigs * 2 * numAttribs * __GLX_SIZE_CARD32) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+	__GLX_DECLARE_SWAP_VARIABLES;

+	__GLX_SWAP_SHORT(&reply.sequenceNumber);

+	__GLX_SWAP_INT(&reply.length);

+	__GLX_SWAP_INT(&reply.numFBConfigs);

+	__GLX_SWAP_INT(&reply.numAttribs);

+    }

+    WriteToClient(client, sz_xGLXGetFBConfigsReply, (char *)&reply);

+

+    for (i=0; i < numFBConfigs; i++) {

+       int associatedVisualId = 0;

+       int drawableTypeIndex;

+       pFBConfig = __glXFBConfigs[ i * (screenInfo.numScreens+1) ];

+

+	p = 0;

+	/* core attributes */

+	buf[p++] = GLX_FBCONFIG_ID;

+	buf[p++] = pFBConfig->id;

+	buf[p++] = GLX_BUFFER_SIZE;

+	buf[p++] = pFBConfig->indexBits;

+	buf[p++] = GLX_LEVEL;

+	buf[p++] = pFBConfig->level;

+	buf[p++] = GLX_DOUBLEBUFFER;

+	buf[p++] = pFBConfig->doubleBufferMode;

+	buf[p++] = GLX_STEREO;

+	buf[p++] = pFBConfig->stereoMode;

+	buf[p++] = GLX_AUX_BUFFERS;

+	buf[p++] = pFBConfig->maxAuxBuffers;

+	buf[p++] = GLX_RED_SIZE;

+	buf[p++] = pFBConfig->redBits;

+	buf[p++] = GLX_GREEN_SIZE;

+	buf[p++] = pFBConfig->greenBits;

+	buf[p++] = GLX_BLUE_SIZE;

+	buf[p++] = pFBConfig->blueBits;

+	buf[p++] = GLX_ALPHA_SIZE;

+	buf[p++] = pFBConfig->alphaBits;

+	buf[p++] = GLX_DEPTH_SIZE;

+	buf[p++] = pFBConfig->depthBits;

+	buf[p++] = GLX_STENCIL_SIZE;

+	buf[p++] = pFBConfig->stencilBits;

+	buf[p++] = GLX_ACCUM_RED_SIZE;

+	buf[p++] = pFBConfig->accumRedBits;

+	buf[p++] = GLX_ACCUM_GREEN_SIZE;

+	buf[p++] = pFBConfig->accumGreenBits;

+	buf[p++] = GLX_ACCUM_BLUE_SIZE;

+	buf[p++] = pFBConfig->accumBlueBits;

+	buf[p++] = GLX_ACCUM_ALPHA_SIZE;

+	buf[p++] = pFBConfig->accumAlphaBits;

+	buf[p++] = GLX_RENDER_TYPE;

+	buf[p++] = pFBConfig->renderType;

+	buf[p++] = GLX_DRAWABLE_TYPE;

+	drawableTypeIndex = p;

+	buf[p++] = pFBConfig->drawableType;

+	buf[p++] = GLX_X_VISUAL_TYPE;

+	buf[p++] = pFBConfig->visualType;

+	buf[p++] = GLX_CONFIG_CAVEAT;

+	buf[p++] = pFBConfig->visualCaveat;

+	buf[p++] = GLX_TRANSPARENT_TYPE;

+	buf[p++] = pFBConfig->transparentType;

+	buf[p++] = GLX_TRANSPARENT_RED_VALUE;

+	buf[p++] = pFBConfig->transparentRed;

+	buf[p++] = GLX_TRANSPARENT_GREEN_VALUE;

+	buf[p++] = pFBConfig->transparentGreen;

+	buf[p++] = GLX_TRANSPARENT_BLUE_VALUE;

+	buf[p++] = pFBConfig->transparentBlue;

+	buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE;

+	buf[p++] = pFBConfig->transparentAlpha;

+	buf[p++] = GLX_TRANSPARENT_INDEX_VALUE;

+	buf[p++] = pFBConfig->transparentIndex;

+	buf[p++] = GLX_MAX_PBUFFER_WIDTH;

+	buf[p++] = pFBConfig->maxPbufferWidth;

+	buf[p++] = GLX_MAX_PBUFFER_HEIGHT;

+	buf[p++] = pFBConfig->maxPbufferHeight;

+	buf[p++] = GLX_MAX_PBUFFER_PIXELS;

+	buf[p++] = pFBConfig->maxPbufferPixels;

+

+	/*

+         * find the visual of the back-end server and match a visual

+	 * on the proxy.

+	 * do only once - if a visual is not yet associated.

+	 */

+	if (pFBConfig->associatedVisualId == (unsigned int)-1) {

+	   DMXScreenInfo *dmxScreen = &dmxScreens[screen];

+	   __GLXFBConfig *be_pFBConfig = __glXFBConfigs[ i * (screenInfo.numScreens+1)+screen+1 ];

+	   __GLXvisualConfig *pGlxVisual = NULL;

+	   int v;

+	   int found = 0;

+	   for (v=0; v<dmxScreen->numGlxVisuals; v++) {

+	      if (dmxScreen->glxVisuals[v].vid == be_pFBConfig->associatedVisualId) {

+		 pGlxVisual = &dmxScreen->glxVisuals[v];

+		 break;

+	      }

+	   }

+

+	   if (pGlxVisual) {

+	      for (v=0; v<pGlxScreen->numVisuals; v++) {

+		 if (glxVisualsMatch(&pGlxScreen->pGlxVisual[v], pGlxVisual)) {

+		    associatedVisualId = pGlxScreen->pGlxVisual[v].vid;

+		    found = 1;

+		    break;

+		 }

+	      }

+	   }

+

+	   if (!found) {

+	      associatedVisualId = 0;

+	      pFBConfig->drawableType &= ~(GLX_WINDOW_BIT);

+	      buf[drawableTypeIndex] = pFBConfig->drawableType;

+	   }

+#ifdef PANORAMIX

+	   else if (!noPanoramiXExtension) {

+	      /* convert the associated visualId to the panoramix one */

+	      pFBConfig->associatedVisualId =

+		  PanoramiXTranslateVisualID(screen, v);

+	   }

+#endif

+	}

+	else {

+	   associatedVisualId = pFBConfig->associatedVisualId;

+	}

+

+	buf[p++] = GLX_VISUAL_ID;

+	buf[p++] = associatedVisualId;

+

+	/* SGIS_multisample attributes */

+	buf[p++] = GLX_SAMPLES_SGIS;

+	buf[p++] = pFBConfig->multiSampleSize;

+	buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;

+	buf[p++] = pFBConfig->nMultiSampleBuffers;

+

+	/* SGIX_pbuffer specific attributes */

+	buf[p++] = GLX_OPTIMAL_PBUFFER_WIDTH_SGIX;

+	buf[p++] = pFBConfig->optimalPbufferWidth;

+	buf[p++] = GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX;

+	buf[p++] = pFBConfig->optimalPbufferHeight;

+

+	buf[p++] = GLX_VISUAL_SELECT_GROUP_SGIX;

+	buf[p++] = pFBConfig->visualSelectGroup;

+

+	if (client->swapped) {

+	    __GLX_DECLARE_SWAP_VARIABLES;

+	    __GLX_SWAP_INT_ARRAY((int *)buf, 2*numAttribs);

+	}

+	WriteToClient(client, 2*numAttribs * __GLX_SIZE_CARD32, (char *)buf);

+    }

+    return Success;

+}

+

+int __glXGetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc)

+{

+   xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *)pc;

+   xGLXGetFBConfigsReq new_req;

+

+   new_req.reqType = req->reqType;

+   new_req.glxCode = req->glxCode;

+   new_req.length = req->length;

+   new_req.screen = req->screen;

+

+   return( __glXGetFBConfigs( cl, (GLbyte *)&new_req ) );

+}

+

+

+int __glXCreateWindow(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXCreateWindowReq *req = (xGLXCreateWindowReq *) pc;

+    int screen = req->screen;

+    GLXFBConfigID fbconfigId = req->fbconfig;

+    XID windowId = req->window;

+    XID glxwindowId = req->glxwindow;

+    DrawablePtr pDraw;

+    ScreenPtr pScreen;

+    __glXWindow *pGlxWindow;

+    __GLXFBConfig *pGlxFBConfig = NULL;

+    VisualPtr pVisual;

+    VisualID visId;

+    int i, rc;

+

+    /*

+    ** Check if windowId is valid 

+    */

+    rc = dixLookupDrawable(&pDraw, windowId, client, M_DRAWABLE_WINDOW,

+			   DixAddAccess);

+    if (rc != Success)

+	return rc;

+

+    /*

+    ** Check if screen of window matches screen of fbconfig.

+    */

+    pScreen = pDraw->pScreen;

+    if (screen != pScreen->myNum) {

+	return BadMatch;

+    }

+

+    /*

+    ** Find the FBConfigRec for this fbconfigid.

+    */

+    if (!(pGlxFBConfig = glxLookupFBConfig(fbconfigId))) {

+	client->errorValue = fbconfigId;

+	return __glXBadFBConfig;

+    }

+    visId = pGlxFBConfig->associatedVisualId;

+

+    /*

+    ** Check if the fbconfig supports rendering to windows 

+    */

+    if( !(pGlxFBConfig->drawableType & GLX_WINDOW_BIT) ) {

+	return BadMatch;	

+    }

+

+    if (visId != None) {

+       /*

+	** Check if the visual ID is valid for this screen.

+	*/

+       pVisual = pScreen->visuals;

+       for (i = 0; i < pScreen->numVisuals; i++, pVisual++) {

+	  if (pVisual->vid == visId) {

+	     break;

+	  }

+       }

+       if (i == pScreen->numVisuals) {

+	  client->errorValue = visId;

+	  return BadValue;

+       }

+	

+        /*

+        ** Check if color buffer depth of fbconfig matches depth 

+	** of window.

+        */

+        if (pVisual->nplanes != pDraw->depth) {

+	    return BadMatch;

+	}

+    } else

+	/*

+	** The window was created with no visual that corresponds

+	** to fbconfig 

+	*/

+	return BadMatch;

+

+    /*

+    ** Check if there is already a fbconfig associated with this window

+    */

+    if ( LookupIDByType(glxwindowId, __glXWindowRes) ) {

+	client->errorValue = glxwindowId;

+	return BadAlloc;

+    }

+

+    pGlxWindow = (__glXWindow *) malloc(sizeof(__glXWindow));

+    if (!pGlxWindow) {

+	return BadAlloc;

+    }

+

+    /*

+    ** Register this GLX window as a resource

+    */

+    if (!(AddResource(glxwindowId, __glXWindowRes, pGlxWindow))) {

+	return BadAlloc;

+    }

+

+    pGlxWindow->pDraw = pDraw;

+    pGlxWindow->type = GLX_GLXWINDOW_TYPE;

+    pGlxWindow->idExists = True;

+    pGlxWindow->refcnt = 0;

+    pGlxWindow->pGlxFBConfig = pGlxFBConfig;

+    pGlxWindow->pScreen = pScreen;

+

+    return Success;

+}

+

+int __glXDestroyWindow(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc;

+    XID glxwindow = req->glxwindow;

+

+    /*

+    ** Check if it's a valid GLX window.

+    */

+    if (!LookupIDByType(glxwindow, __glXWindowRes)) {

+	client->errorValue = glxwindow;

+	return __glXBadDrawable;

+    }

+    /*

+    ** The glx window destructor will check whether it's current before

+    ** freeing anything.

+    */

+    FreeResource(glxwindow, RT_NONE);	

+

+    return Success;

+}

+

+int __glXQueryContext(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    __GLXcontext *ctx;

+    xGLXQueryContextReq *req;

+    xGLXQueryContextReply reply;

+    int nProps;

+    int *sendBuf, *pSendBuf;

+    int nReplyBytes;

+

+    req = (xGLXQueryContextReq *)pc;

+    ctx = (__GLXcontext *) LookupIDByType(req->context, __glXContextRes);

+    if (!ctx) {

+        client->errorValue = req->context;

+        return __glXBadContext;

+    }

+

+    nProps = 3;

+

+    reply.length = nProps << 1;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.n = nProps;

+

+    nReplyBytes = reply.length << 2;

+    sendBuf = (int *)malloc(nReplyBytes);

+    pSendBuf = sendBuf;

+    *pSendBuf++ = GLX_FBCONFIG_ID;

+    *pSendBuf++ = (int)(ctx->pFBConfig->id);

+    *pSendBuf++ = GLX_RENDER_TYPE;

+    *pSendBuf++ = (int)(ctx->pFBConfig->renderType);

+    *pSendBuf++ = GLX_SCREEN;

+    *pSendBuf++ = (int)(ctx->pScreen->myNum);

+

+    if (client->swapped) {

+        __glXSwapQueryContextReply(client, &reply, sendBuf);

+    } else {

+        WriteToClient(client, sz_xGLXQueryContextReply, (char *)&reply);

+        WriteToClient(client, nReplyBytes, (char *)sendBuf);

+    }

+    free((char *)sendBuf);

+

+    return Success;

+}

+

+int __glXQueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    __GLXcontext *ctx;

+    xGLXQueryContextInfoEXTReq *req;

+    xGLXQueryContextInfoEXTReply reply;

+    int nProps;

+    int *sendBuf, *pSendBuf;

+    int nReplyBytes;

+

+    req = (xGLXQueryContextInfoEXTReq *)pc;

+    ctx = (__GLXcontext *) SecurityLookupIDByType(client, req->context, __glXContextRes, DixReadAccess);

+    if (!ctx) {

+        client->errorValue = req->context;

+        return __glXBadContext;

+    }

+

+    nProps = 4;

+

+    reply.length = nProps << 1;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.n = nProps;

+

+    nReplyBytes = reply.length << 2;

+    sendBuf = (int *)malloc(nReplyBytes);

+    pSendBuf = sendBuf;

+    *pSendBuf++ = GLX_SHARE_CONTEXT_EXT;

+    *pSendBuf++ = (int)(ctx->share_id);

+    *pSendBuf++ = GLX_VISUAL_ID_EXT;

+    *pSendBuf++ = (int)(ctx->pVisual ? ctx->pVisual->vid : 0);

+    *pSendBuf++ = GLX_SCREEN_EXT;

+    *pSendBuf++ = (int)(ctx->pScreen->myNum);

+    *pSendBuf++ = GLX_FBCONFIG_ID;

+    *pSendBuf++ = (int)(ctx->pFBConfig ? ctx->pFBConfig->id : 0);

+

+    if (client->swapped) {

+        __glXSwapQueryContextInfoEXTReply(client, &reply, sendBuf);

+    } else {

+        WriteToClient(client, sz_xGLXQueryContextInfoEXTReply, (char *)&reply);

+        WriteToClient(client, nReplyBytes, (char *)sendBuf);

+    }

+    free((char *)sendBuf);

+

+    return Success;

+}

+

+int __glXCreatePbuffer(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXCreatePbufferReq *req = (xGLXCreatePbufferReq *)pc;

+    xGLXCreatePbufferReq *be_req;

+    int screen = req->screen;

+    GLXFBConfigID fbconfigId = req->fbconfig;

+    GLXPbuffer pbuffer = req->pbuffer;

+    __glXPbuffer *pGlxPbuffer;

+    int numAttribs = req->numAttribs;

+    int *attr;

+    ScreenPtr pScreen;

+    __GLXFBConfig *pGlxFBConfig;

+    __GLXFBConfig *be_pGlxFBConfig;

+    XID be_xid;

+    Display *dpy;

+    DMXScreenInfo *dmxScreen;

+    int s;

+    int from_screen, to_screen;

+

+   /*

+    ** Look up screen and FBConfig.

+    */

+    if (screen > screenInfo.numScreens) {

+        /* The client library must send a valid screen number. */

+        client->errorValue = screen;

+        return BadValue;

+    }

+    pScreen = screenInfo.screens[screen];

+

+    /*

+    ** Find the FBConfigRec for this fbconfigid.

+    */

+    if (!(pGlxFBConfig = glxLookupFBConfig(fbconfigId))) {

+	client->errorValue = fbconfigId;

+	return __glXBadFBConfig;

+    }

+

+    /*

+    ** Create the GLX part of the Pbuffer.

+    */

+    pGlxPbuffer = (__glXPbuffer *) malloc(sizeof(__glXPbuffer));

+    if (!pGlxPbuffer) {

+        return BadAlloc;

+    }

+

+    pGlxPbuffer->be_xids = (XID *) malloc( sizeof(XID) * screenInfo.numScreens );

+    if (!pGlxPbuffer->be_xids) {

+        free(pGlxPbuffer);

+        return BadAlloc;

+    }

+

+    /*

+     * Allocate an XID on the back-end server(s) and send him the request

+     */

+    from_screen = to_screen = screen;

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+       dpy = GetBackEndDisplay(cl,s);

+       be_xid = XAllocID(dpy);

+       dmxScreen = &dmxScreens[s];

+       be_pGlxFBConfig = glxLookupBackEndFBConfig( pGlxFBConfig->id, s );

+       

+       attr = (int *)( req+1 );

+

+       LockDisplay(dpy);

+       GetReqExtra(GLXCreatePbuffer, 2 * numAttribs * __GLX_SIZE_CARD32, be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXCreatePbuffer;

+       be_req->screen = be_pGlxFBConfig->screen;

+       be_req->fbconfig = be_pGlxFBConfig->id;

+       be_req->pbuffer = be_xid;

+       be_req->numAttribs = numAttribs;

+    

+       /* Send attributes */

+       if ( attr != NULL ) {

+	  CARD32 *pc = (CARD32 *)(be_req + 1);

+

+	  while (numAttribs-- > 0) {

+	     *pc++ = *attr++;     /* token */

+	     *pc++ = *attr++;     /* value */

+	  }

+       }

+

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+       pGlxPbuffer->be_xids[s] = be_xid;

+    }

+

+

+    pGlxPbuffer->idExists = True;

+    pGlxPbuffer->refcnt = 0;

+    pGlxPbuffer->pFBConfig = pGlxFBConfig;

+    pGlxPbuffer->pScreen = pScreen;

+

+    /*

+    ** Register the resource.

+    */

+    if (!(AddResource(pbuffer, __glXPbufferRes, pGlxPbuffer))) {

+        return BadAlloc;

+    }

+

+    return Success;

+

+}

+

+int __glXDestroyPbuffer(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc;

+    xGLXDestroyPbufferReq *be_req;

+    GLXPbuffer pbuffer = req->pbuffer;

+    Display *dpy;

+    int screen;

+    DMXScreenInfo *dmxScreen;

+    __glXPbuffer *pGlxPbuffer;

+    int s;

+    int from_screen, to_screen;

+

+    /*

+    ** Check if it's a valid Pbuffer

+    */

+    pGlxPbuffer = (__glXPbuffer *)LookupIDByType(pbuffer, __glXPbufferRes);

+    if (!pGlxPbuffer) {

+	client->errorValue = pbuffer;

+	return __glXBadPbuffer;

+    }

+

+    screen = pGlxPbuffer->pScreen->myNum;

+

+    from_screen = to_screen = screen;

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    for (s=from_screen; s<=to_screen; s++) {

+       dpy = GetBackEndDisplay(cl,s);

+       dmxScreen = &dmxScreens[s];

+

+       /* send the destroy request to the back-end server */

+       LockDisplay(dpy);

+       GetReq(GLXDestroyPbuffer, be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = X_GLXDestroyPbuffer;

+       be_req->pbuffer = pGlxPbuffer->be_xids[s];

+       UnlockDisplay(dpy);

+       SyncHandle();

+    }

+

+    FreeResource(pbuffer, RT_NONE);	

+

+    return Success;

+}

+

+int __glXGetDrawableAttributes(__GLXclientState *cl, GLbyte *pc)

+{

+   xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc;

+   xGLXGetDrawableAttributesReq *be_req;

+   xGLXGetDrawableAttributesReply reply;

+   ClientPtr client = cl->client;

+   GLXDrawable drawId = req->drawable;

+   GLXDrawable be_drawable = 0;

+   DrawablePtr pDraw = NULL;

+   Display *dpy;

+   int screen, rc;

+   DMXScreenInfo *dmxScreen;

+   CARD32 *attribs = NULL;

+   int attribs_size;

+#ifdef PANORAMIX

+    PanoramiXRes *pXinDraw = NULL;

+#endif

+

+   if (drawId != None) {

+      rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixGetAttrAccess);

+      if (rc == Success) {

+	 if (pDraw->type == DRAWABLE_WINDOW) {

+		WindowPtr pWin = (WindowPtr)pDraw;

+		be_drawable = 0;

+		screen = pWin->drawable.pScreen->myNum;

+

+	 }

+	 else {

+	    /*

+	     ** Drawable is not a Window , GLXWindow or a GLXPixmap.

+	     */

+	    client->errorValue = drawId;

+	    return __glXBadDrawable;

+	 }

+      }

+

+      if (!pDraw) {

+	 __GLXpixmap *pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,

+							__glXPixmapRes);

+	 if (pGlxPixmap) {

+		pDraw = pGlxPixmap->pDraw;

+		screen = pGlxPixmap->pScreen->myNum;

+                be_drawable = pGlxPixmap->be_xids[screen];

+	 }

+      }

+

+      if (!pDraw) {

+	 __glXWindow *pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);

+	 if (pGlxWindow) {

+	    pDraw = pGlxWindow->pDraw;

+	    screen = pGlxWindow->pScreen->myNum;

+	    be_drawable = 0;

+     	 }

+      }

+

+      if (!pDraw) {

+	 __glXPbuffer *pGlxPbuffer = (__glXPbuffer *)LookupIDByType(drawId, __glXPbufferRes);

+	 if (pGlxPbuffer) {

+    	    pDraw = (DrawablePtr)pGlxPbuffer;

+	    screen = pGlxPbuffer->pScreen->myNum;

+	    be_drawable = pGlxPbuffer->be_xids[screen];

+	 }

+      }

+

+

+      if (!pDraw) {

+	 /*

+	  ** Drawable is not a Window , GLXWindow or a GLXPixmap.

+	  */

+	 client->errorValue = drawId;

+	 return __glXBadDrawable;

+      }

+    }

+

+

+   /* if the drawable is a window or GLXWindow - 

+    * we need to find the base id on the back-end server

+    */

+   if (!be_drawable) {

+       WindowPtr pWin = (WindowPtr)pDraw;

+

+#ifdef PANORAMIX

+       if (!noPanoramiXExtension) {

+	  pXinDraw = (PanoramiXRes *)

+	     SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);

+	  if (!pXinDraw) {

+	     client->errorValue = drawId;

+	     return __glXBadDrawable;

+	  }

+

+	  dixLookupWindow(&pWin, pXinDraw->info[screen].id, client,

+			  DixReadAccess);

+       }

+#endif

+

+       if (pWin) {

+	   be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   if (!be_drawable) {

+	      /* it might be that the window did not created yet on the */

+	      /* back-end server (lazy window creation option), force   */

+	      /* creation of the window */

+	      dmxCreateAndRealizeWindow( pWin, TRUE );

+	      be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   }

+       }

+       else {

+	  client->errorValue = drawId;

+	  return __glXBadDrawable;

+       }

+   }

+

+

+   /* send the request to the back-end server */

+   dpy = GetBackEndDisplay(cl,screen);

+   dmxScreen = &dmxScreens[screen];

+

+   /* make sure drawable exists on back-end */

+   dmxSync( dmxScreen, 1 );

+

+   LockDisplay(dpy);

+   GetReq(GLXGetDrawableAttributes, be_req);

+   be_req->reqType = dmxScreen->glxMajorOpcode;

+   be_req->glxCode = X_GLXGetDrawableAttributes;

+   be_req->drawable = be_drawable;

+   be_req->length = req->length;

+   if (!_XReply(dpy, (xReply *) &reply, 0, False)) {

+      UnlockDisplay(dpy);

+      SyncHandle();

+      return( BE_TO_CLIENT_ERROR(dmxLastErrorEvent.error_code) );

+   }

+

+   if (reply.numAttribs) {

+      attribs_size = 2 * reply.numAttribs * __GLX_SIZE_CARD32;

+      attribs = (CARD32 *) malloc(attribs_size);

+      if (attribs == NULL) {

+	 UnlockDisplay(dpy);

+	 SyncHandle();

+	 return BadAlloc;

+      }

+

+      _XRead(dpy, (char *) attribs, attribs_size);

+   }

+

+   UnlockDisplay(dpy);

+   SyncHandle();

+

+

+   /* send the reply back to the client */

+   reply.sequenceNumber = client->sequence;

+   if (client->swapped) {

+      __glXSwapGetDrawableAttributesReply(client, &reply, (int *)attribs);

+   }

+   else {

+      WriteToClient(client, sz_xGLXGetDrawableAttributesReply, (char *)&reply);

+      WriteToClient(client, attribs_size, (char *)attribs);

+   }

+

+   Xfree(attribs);

+

+   return Success;

+}

+

+int __glXChangeDrawableAttributes(__GLXclientState *cl, GLbyte *pc)

+{

+   xGLXChangeDrawableAttributesReq *req = (xGLXChangeDrawableAttributesReq *)pc;

+   xGLXChangeDrawableAttributesReq *be_req;

+   ClientPtr client = cl->client;

+   GLXDrawable drawId = req->drawable;

+   GLXDrawable be_drawable = 0;

+   DrawablePtr pDraw = NULL;

+   Display *dpy;

+   int screen, rc;

+   DMXScreenInfo *dmxScreen;

+   char *attrbuf;

+#ifdef PANORAMIX

+    PanoramiXRes *pXinDraw = NULL;

+    PanoramiXRes *pXinReadDraw = NULL;

+#endif

+

+   if (drawId != None) {

+      rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixSetAttrAccess);

+      if (rc == Success) {

+	 if (pDraw->type == DRAWABLE_WINDOW) {

+		WindowPtr pWin = (WindowPtr)pDraw;

+		be_drawable = 0;

+		screen = pWin->drawable.pScreen->myNum;

+

+	 }

+	 else {

+	    /*

+	     ** Drawable is not a Window , GLXWindow or a GLXPixmap.

+	     */

+	    client->errorValue = drawId;

+	    return __glXBadDrawable;

+	 }

+      }

+

+      if (!pDraw) {

+	 __GLXpixmap *pGlxPixmap = (__GLXpixmap *) LookupIDByType(drawId,

+							__glXPixmapRes);

+	 if (pGlxPixmap) {

+		pDraw = pGlxPixmap->pDraw;

+		screen = pGlxPixmap->pScreen->myNum;

+                be_drawable = pGlxPixmap->be_xids[screen];

+	 }

+      }

+

+      if (!pDraw) {

+	 __glXWindow *pGlxWindow = (__glXWindow *) LookupIDByType(drawId, __glXWindowRes);

+	 if (pGlxWindow) {

+	    pDraw = pGlxWindow->pDraw;

+	    screen = pGlxWindow->pScreen->myNum;

+	    be_drawable = 0;

+     	 }

+      }

+

+      if (!pDraw) {

+	 __glXPbuffer *pGlxPbuffer = (__glXPbuffer *)LookupIDByType(drawId, __glXPbufferRes);

+	 if (pGlxPbuffer) {

+    	    pDraw = (DrawablePtr)pGlxPbuffer;

+	    screen = pGlxPbuffer->pScreen->myNum;

+	    be_drawable = pGlxPbuffer->be_xids[screen];

+	 }

+      }

+

+

+      if (!pDraw) {

+	 /*

+	  ** Drawable is not a Window , GLXWindow or a GLXPixmap.

+	  */

+	 client->errorValue = drawId;

+	 return __glXBadDrawable;

+      }

+    }

+

+

+   /* if the drawable is a window or GLXWindow - 

+    * we need to find the base id on the back-end server

+    */

+   if (!be_drawable) {

+       WindowPtr pWin = (WindowPtr)pDraw;

+

+#ifdef PANORAMIX

+       if (!noPanoramiXExtension) {

+	  pXinDraw = (PanoramiXRes *)

+	     SecurityLookupIDByClass(client, pDraw->id, XRC_DRAWABLE, DixReadAccess);

+	  if (!pXinDraw) {

+	     client->errorValue = drawId;

+	     return __glXBadDrawable;

+	  }

+

+	  dixLookupWindow(&pWin, pXinDraw->info[screen].id, client,

+			  DixReadAccess);

+       }

+#endif

+

+       if (pWin) {

+	   be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   if (!be_drawable) {

+	      /* it might be that the window did not created yet on the */

+	      /* back-end server (lazy window creation option), force   */

+	      /* creation of the window */

+	      dmxCreateAndRealizeWindow( pWin, TRUE );

+	      be_drawable = (unsigned int)(DMX_GET_WINDOW_PRIV(pWin))->window;

+	   }

+       }

+       else {

+	  client->errorValue = drawId;

+	  return __glXBadDrawable;

+       }

+   }

+

+

+   /* send the request to the back-end server */

+   dpy = GetBackEndDisplay(cl,screen);

+   dmxScreen = &dmxScreens[screen];

+

+   /* make sure drawable exists on back-end */

+   dmxSync( dmxScreen, 1 );

+

+   LockDisplay(dpy);

+   GetReqExtra(GLXChangeDrawableAttributes,

+                        2 * req->numAttribs * __GLX_SIZE_CARD32, be_req);

+   be_req->reqType = dmxScreen->glxMajorOpcode;

+   be_req->glxCode = X_GLXChangeDrawableAttributes;

+   be_req->drawable = be_drawable;

+   be_req->numAttribs = req->numAttribs;

+   be_req->length = req->length;

+

+   UnlockDisplay(dpy);

+   SyncHandle();

+

+   return Success;

+}

+

+int __glXSendLargeCommand(__GLXclientState *cl, GLXContextTag contextTag)

+{

+   ClientPtr client = cl->client;

+    xGLXRenderLargeReq *req;

+    GLint maxSize, amount;

+    GLint totalRequests, requestNumber;

+    GLint dataLen;

+    GLbyte *data;

+    __GLXcontext *glxc;

+    int s;

+    int from_screen, to_screen;

+

+    maxSize = cl->largeCmdMaxReqDataSize - (GLint)sizeof(xGLXRenderLargeReq);

+    dataLen = cl->largeCmdBytesTotal;

+    totalRequests = (dataLen / maxSize);

+    if (dataLen % maxSize) totalRequests++;

+

+    glxc = __glXLookupContextByTag(cl, contextTag);

+    if (!glxc) {

+       client->errorValue = contextTag;

+       return __glXBadContext;

+    }

+    from_screen = to_screen = glxc->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    /*

+    ** Send enough requests until the whole array is sent.

+    */

+    requestNumber = 1;

+    data = cl->largeCmdBuf;

+    while (dataLen > 0) {

+	amount = dataLen;

+	if (amount > maxSize) {

+	    amount = maxSize;

+	}

+

+	for (s=from_screen; s<=to_screen; s++) {

+

+	   Display *dpy = GetBackEndDisplay(cl,s);

+	   DMXScreenInfo *dmxScreen = &dmxScreens[s];

+

+	   LockDisplay(dpy);

+	   GetReq(GLXRenderLarge,req); 

+	   req->reqType = dmxScreen->glxMajorOpcode;

+	   req->glxCode = X_GLXRenderLarge; 

+	   req->contextTag = GetCurrentBackEndTag(cl,contextTag,s);

+	   req->length += (amount + 3) >> 2;

+	   req->requestNumber = requestNumber++;

+	   req->requestTotal = totalRequests;

+	   req->dataBytes = amount;

+	   Data(dpy, ((const char*)data), amount);

+	   dataLen -= amount;

+	   data = ((GLbyte *) data) + amount;

+	   UnlockDisplay(dpy);

+	   SyncHandle();

+	}

+    }

+

+    return Success;

+}