svn merge https://vcxsrv.svn.sourceforge.net/svnroot/vcxsrv/branches/released

3 files changed, 3873 insertions, 3876 deletions

diff --git a/xorg-server/glx/glxcmds.c b/xorg-server/glx/glxcmds.c
index 6723297c9..847154718 100644
--- a/xorg-server/glx/glxcmds.c
+++ b/xorg-server/glx/glxcmds.c
@@ -1,2421 +1,2422 @@
-/*
- * 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_DIX_CONFIG_H
-#include <dix-config.h>
-#else
-
-#include "glheader.h"
-
-#endif
-
-#include <string.h>
-#include <assert.h>
-
-#include "glxserver.h"
-#include <GL/glxtokens.h>
-#include <unpack.h>
-#include "g_disptab.h"
-#include <pixmapstr.h>
-#include <windowstr.h>
-#include "glxutil.h"
-#include "glxext.h"
-#include "glapitable.h"
-#include "glapi.h"
-#include "glthread.h"
-#include "dispatch.h"
-#include "indirect_dispatch.h"
-#include "indirect_table.h"
-#include "indirect_util.h"
-
-static int
-validGlxScreen(ClientPtr client, int screen, __GLXscreen **pGlxScreen, int *err)
-{
-    /*
-    ** Check if screen exists.
-    */
-    if (screen >= screenInfo.numScreens) {
-	client->errorValue = screen;
-	*err = BadValue;
-	return FALSE;
-    }
-    *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-
-    return TRUE;
-}
-
-static int
-validGlxFBConfig(ClientPtr client, __GLXscreen *pGlxScreen, XID id,
-		 __GLXconfig **config, int *err)
-{
-    __GLXconfig *m;
-
-    for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next)
-	if (m->fbconfigID == id) {
-	    *config = m;
-	    return TRUE;
-	}
-
-    client->errorValue = id;
-    *err = __glXError(GLXBadFBConfig);
-
-    return FALSE;
-}
-
-static int
-validGlxVisual(ClientPtr client, __GLXscreen *pGlxScreen, XID id,
-	       __GLXconfig **config, int *err)
-{
-    int i;
-
-    for (i = 0; i < pGlxScreen->numVisuals; i++)
- 	if (pGlxScreen->visuals[i]->visualID == id) {
-	    *config = pGlxScreen->visuals[i];
-	    return TRUE;
-	}
-
-    client->errorValue = id;
-    *err = BadValue;
-
-    return FALSE;
-}
-
-static int
-validGlxFBConfigForWindow(ClientPtr client, __GLXconfig *config,
-			  DrawablePtr pDraw, int *err)
-{
-    ScreenPtr pScreen = pDraw->pScreen;
-    VisualPtr pVisual = NULL;
-    XID vid;
-    int i;
-
-    vid = wVisual((WindowPtr)pDraw);
-    for (i = 0; i < pScreen->numVisuals; i++) {
-	if (pScreen->visuals[i].vid == vid) {
-	    pVisual = &pScreen->visuals[i];
-	    break;
-	}
-    }
-
-    /* FIXME: What exactly should we check here... */
-    if (pVisual->class != glxConvertToXVisualType(config->visualType) ||
-	!(config->drawableType & GLX_WINDOW_BIT)) {
-	client->errorValue = pDraw->id;
-	*err = BadMatch;
-	return FALSE;
-    }
-
-    return TRUE;
-}
-
-static int
-validGlxContext(ClientPtr client, XID id, int access_mode,
-		__GLXcontext **context, int *err)
-{
-    *err = dixLookupResourceByType((pointer *) context, id,
-				   __glXContextRes, client, access_mode);
-    if (*err != Success) {
-	client->errorValue = id;
-	if (*err == BadValue)
-	    *err = __glXError(GLXBadContext);
-	return FALSE;
-    }
-
-    return TRUE;
-}
-
-static int
-validGlxDrawable(ClientPtr client, XID id, int type, int access_mode,
-		 __GLXdrawable **drawable, int *err)
-{
-    int rc;
-
-    rc = dixLookupResourceByType((pointer *) drawable, id,
-				 __glXDrawableRes, client, access_mode);
-    if (rc != Success && rc != BadValue) {
-	*err = rc;
-	client->errorValue = id;
-	return FALSE;
-    }
-
-    if (rc == BadValue ||
-	(type != GLX_DRAWABLE_ANY && type != (*drawable)->type)) {
-	client->errorValue = id;
-	switch (type) {
-	case GLX_DRAWABLE_WINDOW:
-	    *err = __glXError(GLXBadWindow);
-	    return FALSE;
-	case GLX_DRAWABLE_PIXMAP:
-	    *err = __glXError(GLXBadPixmap);
-	    return FALSE;
-	case GLX_DRAWABLE_PBUFFER:
-	    *err = __glXError(GLXBadPbuffer);
-	    return FALSE;
-	case GLX_DRAWABLE_ANY:
-	    *err = __glXError(GLXBadDrawable);
-	    return FALSE;
-	}
-    }
-
-    return TRUE;
-}
-
-void
-__glXContextDestroy(__GLXcontext *context)
-{
-    __glXFlushContextCache();
-}
-
-static void __glXdirectContextDestroy(__GLXcontext *context)
-{
-    __glXContextDestroy(context);
-    xfree(context);
-}
-
-static __GLXcontext *__glXdirectContextCreate(__GLXscreen *screen,
-					      __GLXconfig *modes,
-					      __GLXcontext *shareContext)
-{
-    __GLXcontext *context;
-
-    context = xcalloc (1, sizeof (__GLXcontext));
-    if (context == NULL)
-	return NULL;
-
-    context->destroy = __glXdirectContextDestroy;
-
-    return context;
-}
-
-/**
- * Create a GL context with the given properties.  This routine is used
- * to implement \c glXCreateContext, \c glXCreateNewContext, and
- * \c glXCreateContextWithConfigSGIX.  This works becuase of the hack way
- * that GLXFBConfigs are implemented.  Basically, the FBConfigID is the
- * same as the VisualID.
- */
-
-static int
-DoCreateContext(__GLXclientState *cl, GLXContextID gcId,
-		GLXContextID shareList, __GLXconfig *config,
-		__GLXscreen *pGlxScreen, GLboolean isDirect)
-{
-    ClientPtr client = cl->client;
-    __GLXcontext *glxc, *shareglxc;
-    int err;
-    
-    LEGAL_NEW_RESOURCE(gcId, client);
-
-    /*
-    ** Find the display list space that we want to share.  
-    **
-    ** NOTE: In a multithreaded X server, we would need to keep a reference
-    ** count for each display list so that if one client detroyed a list that 
-    ** another client was using, the list would not really be freed until it 
-    ** was no longer in use.  Since this sample implementation has no support 
-    ** for multithreaded servers, we don't do this.  
-    */
-    if (shareList == None) {
-	shareglxc = 0;
-    } else {
-	if (!validGlxContext(client, shareList, DixReadAccess,
-			     &shareglxc, &err))
-	    return err;
-
-	if (shareglxc->isDirect) {
-	    /*
-	    ** NOTE: no support for sharing display lists between direct
-	    ** contexts, even if they are in the same address space.
-	    */
-#if 0
-            /* Disabling this code seems to allow shared display lists
-             * and texture objects to work.  We'll leave it disabled for now.
-             */
-	    client->errorValue = shareList;
-	    return BadMatch;
-#endif
-	} else {
-	    /*
-	    ** Create an indirect context regardless of what the client asked
-	    ** for; this way we can share display list space with shareList.
-	    */
-	    isDirect = GL_FALSE;
-	}
-    }
-
-    /*
-    ** Allocate memory for the new context
-    */
-    if (!isDirect)
-	glxc = pGlxScreen->createContext(pGlxScreen, config, shareglxc);
-    else
-	glxc = __glXdirectContextCreate(pGlxScreen, config, shareglxc);
-    if (!glxc) {
-	return BadAlloc;
-    }
-
-    /*
-    ** Initially, setup the part of the context that could be used by
-    ** a GL core that needs windowing information (e.g., Mesa).
-    */
-    glxc->pGlxScreen = pGlxScreen;
-    glxc->config = config;
-
-    /*
-    ** Register this context as a resource.
-    */
-    if (!AddResource(gcId, __glXContextRes, (pointer)glxc)) {
-	(*glxc->destroy)(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;
-    glxc->isDirect = isDirect;
-    glxc->renderMode = GL_RENDER;
-
-    __glXAddToContextList(glxc);
-
-    return Success;
-}
-
-int __glXDisp_CreateContext(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;
-    __GLXconfig *config;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err))
-	return err;
-
-    return DoCreateContext(cl, req->context, req->shareList,
-			   config, pGlxScreen, req->isDirect);
-}
-
-int __glXDisp_CreateNewContext(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc;
-    __GLXconfig *config;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
-	return err;
-
-    return DoCreateContext(cl, req->context, req->shareList,
-			   config, pGlxScreen, req->isDirect);
-}
-
-int __glXDisp_CreateContextWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateContextWithConfigSGIXReq *req = 
-	(xGLXCreateContextWithConfigSGIXReq *) pc;
-    __GLXconfig *config;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
-	return err;
-
-    return DoCreateContext(cl, req->context, req->shareList,
-			   config, pGlxScreen, req->isDirect);
-}
-int __glXDisp_DestroyContext(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;
-    __GLXcontext *glxc;
-    int err;
-
-    if (!validGlxContext(cl->client, req->context, DixDestroyAccess,
-			 &glxc, &err))
-	    return err;
-
-    FreeResourceByType(req->context, __glXContextRes, FALSE);
-    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)
-{
-    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 **) xalloc(sizeof(__GLXcontext *));
-    } else {
-	table = (__GLXcontext **) xrealloc(table,
-					   (num+1)*sizeof(__GLXcontext *));
-    }
-    table[num] = glxc;
-    cl->currentContexts = table;
-    cl->numCurrentContexts++;
-    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;
-}
-
-/*
-** 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];
-    }
-}
-
-/*****************************************************************************/
-
-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;
-    __glXLastContext = glxc;	
-}
-
-/**
- * This is a helper function to handle the legacy (pre GLX 1.3) cases
- * where passing an X window to glXMakeCurrent is valid.  Given a
- * resource ID, look up the GLX drawable if available, otherwise, make
- * sure it's an X window and create a GLX drawable one the fly.
- */
-static __GLXdrawable *
-__glXGetDrawable(__GLXcontext *glxc, GLXDrawable drawId, ClientPtr client,
-		 int *error)
-{
-    DrawablePtr pDraw;
-    __GLXdrawable *pGlxDraw;
-    int rc;
-
-    if (validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY,
-			 DixWriteAccess, &pGlxDraw, &rc)) {
-	if (glxc != NULL && pGlxDraw->config != glxc->config) {
-	    client->errorValue = drawId;
-	    *error = BadMatch;
-	    return NULL;
-	}
-
-	return pGlxDraw;
-    }
-
-    /* The drawId wasn't a GLX drawable.  Make sure it's a window and
-     * create a GLXWindow for it.  Check that the drawable screen
-     * matches the context screen and that the context fbconfig is
-     * compatible with the window visual. */
-
-    rc = dixLookupDrawable(&pDraw, drawId, client, 0, DixGetAttrAccess);
-    if (rc != Success || pDraw->type != DRAWABLE_WINDOW) {
-	client->errorValue = drawId;
-	*error = __glXError(GLXBadDrawable);
-	return NULL;
-    }
-
-    if (pDraw->pScreen != glxc->pGlxScreen->pScreen) {
-	client->errorValue = pDraw->pScreen->myNum;
-	*error = BadMatch;
-	return NULL;
-    }
-
-    if (!validGlxFBConfigForWindow(client, glxc->config, pDraw, error))
-	return NULL;
-
-    pGlxDraw = glxc->pGlxScreen->createDrawable(glxc->pGlxScreen,
-						pDraw, GLX_DRAWABLE_WINDOW,
-						drawId, glxc->config);
-
-    /* since we are creating the drawablePrivate, drawId should be new */
-    if (!AddResource(drawId, __glXDrawableRes, pGlxDraw)) {
-	pGlxDraw->destroy (pGlxDraw);
-	*error = BadAlloc;
-	return NULL;
-    }
-
-    return pGlxDraw;
-}
-
-/*****************************************************************************/
-/*
-** Make an OpenGL context and drawable current.
-*/
-
-static int
-DoMakeCurrent(__GLXclientState *cl,
-	      GLXDrawable drawId, GLXDrawable readId,
-	      GLXContextID contextId, GLXContextTag tag)
-{
-    ClientPtr client = cl->client;
-    xGLXMakeCurrentReply reply;
-    __GLXcontext *glxc, *prevglxc;
-    __GLXdrawable *drawPriv = NULL;
-    __GLXdrawable *readPriv = NULL;
-    int error;
-    GLuint  mask;
-
-    /*
-    ** If one is None and the other isn't, it's a bad match.
-    */
-
-    mask  = (drawId == None)    ? (1 << 0) : 0;
-    mask |= (readId == None)    ? (1 << 1) : 0;
-    mask |= (contextId == None) ? (1 << 2) : 0;
-
-    if ( (mask != 0x00) && (mask != 0x07) ) {
-	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 __glXError(GLXBadContextTag);
-	}
-	if (prevglxc->renderMode != GL_RENDER) {
-	    /* Oops.  Not in render mode render. */
-	    client->errorValue = prevglxc->id;
-	    return __glXError(GLXBadContextState);
-	}
-    } else {
-	prevglxc = 0;
-    }
-
-    /*
-    ** Lookup new context.  It must not be current for someone else.
-    */
-    if (contextId != None) {
-	int  status;
-
-	if (!validGlxContext(client, contextId, DixUseAccess, &glxc, &error))
-	    return error;
-	if ((glxc != prevglxc) && glxc->isCurrent) {
-	    /* Context is current to somebody else */
-	    return BadAccess;
-	}
-
-	assert( drawId != None );
-	assert( readId != None );
-
-	drawPriv = __glXGetDrawable(glxc, drawId, client, &status);
-	if (drawPriv == NULL)
-	    return status;
-
-	readPriv = __glXGetDrawable(glxc, readId, client, &status);
-	if (readPriv == NULL)
-	    return status;
-
-    } else {
-	/* Switching to no context.  Ignore new drawable. */
-	glxc = 0;
-	drawPriv = 0;
-	readPriv = 0;
-    }
-
-
-    if (prevglxc) {
-	/*
-	** Flush the previous context if needed.
-	*/
-	if (__GLX_HAS_UNFLUSHED_CMDS(prevglxc)) {
-	    if (__glXForceCurrent(cl, tag, (int *)&error)) {
-		CALL_Flush( GET_DISPATCH(), () );
-		__GLX_NOTE_FLUSHED_CMDS(prevglxc);
-	    } else {
-		return error;
-	    }
-	}
-
-	/*
-	** Make the previous context not current.
-	*/
-	if (!(*prevglxc->loseCurrent)(prevglxc)) {
-	    return __glXError(GLXBadContext);
-	}
-	__glXFlushContextCache();
-	if (!prevglxc->isDirect) {
-	    prevglxc->drawPriv = NULL;
-	    prevglxc->readPriv = NULL;
-	}
-    }
-	
-
-    if ((glxc != 0) && !glxc->isDirect) {
-
-	glxc->drawPriv = drawPriv;
-	glxc->readPriv = readPriv;
-
-	/* make the context current */
-	if (!(*glxc->makeCurrent)(glxc)) {
-	    glxc->drawPriv = NULL;
-	    glxc->readPriv = NULL;
-	    return __glXError(GLXBadContext);
-	}
-
-	glxc->isCurrent = GL_TRUE;
-    }
-
-    if (prevglxc) {
-	ChangeCurrentContext(cl, glxc, tag);
-	StopUsingContext(prevglxc);
-    } else {
-	tag = AddCurrentContext(cl, glxc);
-    }
-
-    if (glxc) {
-	StartUsingContext(cl, glxc);
-	reply.contextTag = tag;
-    } else {
-	reply.contextTag = 0;
-    }
-
-    reply.length = 0;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-	__glXSwapMakeCurrentReply(client, &reply);
-    } else {
-	WriteToClient(client, sz_xGLXMakeCurrentReply, (char *)&reply);
-    }
-    return Success;
-}
-
-int __glXDisp_MakeCurrent(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;
-
-    return DoMakeCurrent( cl, req->drawable, req->drawable,
-			  req->context, req->oldContextTag );
-}
-
-int __glXDisp_MakeContextCurrent(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc;
-
-    return DoMakeCurrent( cl, req->drawable, req->readdrawable,
-			  req->context, req->oldContextTag );
-}
-
-int __glXDisp_MakeCurrentReadSGI(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc;
-
-    return DoMakeCurrent( cl, req->drawable, req->readable,
-			  req->context, req->oldContextTag );
-}
-
-int __glXDisp_IsDirect(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;
-    xGLXIsDirectReply reply;
-    __GLXcontext *glxc;
-    int err;
-
-    if (!validGlxContext(cl->client, req->context, DixReadAccess, &glxc, &err))
-	return err;
-
-    reply.isDirect = glxc->isDirect;
-    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 __glXDisp_QueryVersion(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc;
-    xGLXQueryVersionReply reply;
-    GLuint major, minor;
-
-    major = req->majorVersion;
-    minor = req->minorVersion;
-    (void)major;
-    (void)minor;
-
-    /*
-    ** 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 = GLX_SERVER_MAJOR_VERSION;
-    reply.minorVersion = GLX_SERVER_MINOR_VERSION;
-    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 __glXDisp_WaitGL(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;
-    GLXContextTag tag = req->contextTag;
-    __GLXcontext *glxc = NULL;
-    int error;
-
-    if (tag) {
-	glxc = __glXLookupContextByTag(cl, tag);
-	if (!glxc)
-	    return __glXError(GLXBadContextTag);
-    
-	if (!__glXForceCurrent(cl, req->contextTag, &error))
-	    return error;
-
-	CALL_Finish( GET_DISPATCH(), () );
-    }
-
-    if (glxc && glxc->drawPriv->waitGL)
-	(*glxc->drawPriv->waitGL)(glxc->drawPriv);
-
-    return Success;
-}
-
-int __glXDisp_WaitX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXWaitXReq *req = (xGLXWaitXReq *)pc;
-    GLXContextTag tag = req->contextTag;
-    __GLXcontext *glxc = NULL;
-    int error;
-
-    if (tag) {
-	glxc = __glXLookupContextByTag(cl, tag);
-	if (!glxc)
-	    return __glXError(GLXBadContextTag);
-    
-	if (!__glXForceCurrent(cl, req->contextTag, &error))
-	    return error;
-    }
-
-    if (glxc && glxc->drawPriv->waitX)
-	(*glxc->drawPriv->waitX)(glxc->drawPriv);
-
-    return Success;
-}
-
-int __glXDisp_CopyContext(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    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 error;
-
-    if (!validGlxContext(cl->client, source, DixReadAccess, &src, &error))
-	return error;
-    if (!validGlxContext(cl->client, dest, DixWriteAccess, &dst, &error))
-	return error;
-
-    /*
-    ** They must be in the same address space, and same screen.
-    ** NOTE: no support for direct rendering contexts here.
-    */
-    if (src->isDirect || dst->isDirect ||
-	(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 __glXError(GLXBadContextTag);
-	}
-	if (tagcx != src) {
-	    /*
-	    ** This would be caused by a faulty implementation of the client
-	    ** library.
-	    */
-	    return BadMatch;
-	}
-	/*
-	** In this case, glXCopyContext is in both GL and X streams, in terms
-	** of sequentiality.
-	*/
-	if (__glXForceCurrent(cl, tag, &error)) {
-	    /*
-	    ** Do whatever is needed to make sure that all preceding requests
-	    ** in both streams are completed before the copy is executed.
-	    */
-	    CALL_Finish( GET_DISPATCH(), () );
-	    __GLX_NOTE_FLUSHED_CMDS(tagcx);
-	} else {
-	    return error;
-	}
-    }
-    /*
-    ** Issue copy.  The only reason for failure is a bad mask.
-    */
-    if (!(*dst->copy)(dst, src, mask)) {
-	client->errorValue = mask;
-	return BadValue;
-    }
-    return Success;
-}
-
-enum {
-    GLX_VIS_CONFIG_UNPAIRED = 18,
-    GLX_VIS_CONFIG_PAIRED = 20
-};
-
-enum {
-    GLX_VIS_CONFIG_TOTAL = GLX_VIS_CONFIG_UNPAIRED + GLX_VIS_CONFIG_PAIRED
-};
-
-int __glXDisp_GetVisualConfigs(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;
-    ClientPtr client = cl->client;
-    xGLXGetVisualConfigsReply reply;
-    __GLXscreen *pGlxScreen;
-    __GLXconfig *modes;
-    CARD32 buf[GLX_VIS_CONFIG_TOTAL];
-    int p, i, err;
-    __GLX_DECLARE_SWAP_VARIABLES;
-    __GLX_DECLARE_SWAP_ARRAY_VARIABLES;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-
-    reply.numVisuals = pGlxScreen->numVisuals;
-    reply.numProps = GLX_VIS_CONFIG_TOTAL;
-    reply.length = (reply.numVisuals * __GLX_SIZE_CARD32 * GLX_VIS_CONFIG_TOTAL) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-	__GLX_SWAP_SHORT(&reply.sequenceNumber);
-	__GLX_SWAP_INT(&reply.length);
-	__GLX_SWAP_INT(&reply.numVisuals);
-	__GLX_SWAP_INT(&reply.numProps);
-    }
-
-    WriteToClient(client, sz_xGLXGetVisualConfigsReply, (char *)&reply);
-
-    for (i = 0; i < pGlxScreen->numVisuals; i++) {
-	modes = pGlxScreen->visuals[i];
-
-	p = 0;
-	buf[p++] = modes->visualID;
-	buf[p++] = glxConvertToXVisualType( modes->visualType );
-	buf[p++] = (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE;
-
-	buf[p++] = modes->redBits;
-	buf[p++] = modes->greenBits;
-	buf[p++] = modes->blueBits;
-	buf[p++] = modes->alphaBits;
-	buf[p++] = modes->accumRedBits;
-	buf[p++] = modes->accumGreenBits;
-	buf[p++] = modes->accumBlueBits;
-	buf[p++] = modes->accumAlphaBits;
-
-	buf[p++] = modes->doubleBufferMode;
-	buf[p++] = modes->stereoMode;
-
-	buf[p++] = modes->rgbBits;
-	buf[p++] = modes->depthBits;
-	buf[p++] = modes->stencilBits;
-	buf[p++] = modes->numAuxBuffers;
-	buf[p++] = modes->level;
-
-	assert(p == GLX_VIS_CONFIG_UNPAIRED);
-	/* 
-	** Add token/value pairs for extensions.
-	*/
-	buf[p++] = GLX_VISUAL_CAVEAT_EXT;
-	buf[p++] = modes->visualRating;
-	buf[p++] = GLX_TRANSPARENT_TYPE;
-	buf[p++] = modes->transparentPixel;
-	buf[p++] = GLX_TRANSPARENT_RED_VALUE;
-	buf[p++] = modes->transparentRed;
-	buf[p++] = GLX_TRANSPARENT_GREEN_VALUE;
-	buf[p++] = modes->transparentGreen;
-	buf[p++] = GLX_TRANSPARENT_BLUE_VALUE;
-	buf[p++] = modes->transparentBlue;
-	buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE;
-	buf[p++] = modes->transparentAlpha;
-	buf[p++] = GLX_TRANSPARENT_INDEX_VALUE;
-	buf[p++] = modes->transparentIndex;
-	buf[p++] = GLX_SAMPLES_SGIS;
-	buf[p++] = modes->samples;
-	buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;
-	buf[p++] = modes->sampleBuffers;
-	buf[p++] = 0; /* copy over visualSelectGroup (GLX_VISUAL_SELECT_GROUP_SGIX)? */
-	buf[p++] = 0;
-
-	assert(p == GLX_VIS_CONFIG_TOTAL);
-	if (client->swapped) {
-	    __GLX_SWAP_INT_ARRAY(buf, p);
-	}
-	WriteToClient(client, __GLX_SIZE_CARD32 * p, (char *)buf);
-    }
-    return Success;
-}
-
-#define __GLX_TOTAL_FBCONFIG_ATTRIBS (36)
-#define __GLX_FBCONFIG_ATTRIBS_LENGTH (__GLX_TOTAL_FBCONFIG_ATTRIBS * 2)
-/**
- * Send the set of GLXFBConfigs to the client.  There is not currently
- * and interface into the driver on the server-side to get GLXFBConfigs,
- * so we "invent" some based on the \c __GLXvisualConfig structures that
- * the driver does supply.
- * 
- * The reply format for both \c glXGetFBConfigs and \c glXGetFBConfigsSGIX
- * is the same, so this routine pulls double duty.
- */
-
-static int
-DoGetFBConfigs(__GLXclientState *cl, unsigned screen)
-{
-    ClientPtr client = cl->client;
-    xGLXGetFBConfigsReply reply;
-    __GLXscreen *pGlxScreen;
-    CARD32 buf[__GLX_FBCONFIG_ATTRIBS_LENGTH];
-    int p, err;
-    __GLXconfig *modes;
-    __GLX_DECLARE_SWAP_VARIABLES;
-    __GLX_DECLARE_SWAP_ARRAY_VARIABLES;
-
-    if (!validGlxScreen(cl->client, screen, &pGlxScreen, &err))
-	return err;
-
-    reply.numFBConfigs = pGlxScreen->numFBConfigs;
-    reply.numAttribs = __GLX_TOTAL_FBCONFIG_ATTRIBS;
-    reply.length = (__GLX_FBCONFIG_ATTRIBS_LENGTH * reply.numFBConfigs);
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-	__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 (modes = pGlxScreen->fbconfigs; modes != NULL; modes = modes->next) {
-	p = 0;
-
-#define WRITE_PAIR(tag,value) \
-    do { buf[p++] = tag ; buf[p++] = value ; } while( 0 )
-
-	WRITE_PAIR( GLX_VISUAL_ID,        modes->visualID );
-	WRITE_PAIR( GLX_FBCONFIG_ID,      modes->fbconfigID );
-	WRITE_PAIR( GLX_X_RENDERABLE,     GL_TRUE );
-
-	WRITE_PAIR( GLX_RGBA,
-		    (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE );
-	WRITE_PAIR( GLX_RENDER_TYPE,      modes->renderType );
-	WRITE_PAIR( GLX_DOUBLEBUFFER,     modes->doubleBufferMode );
-	WRITE_PAIR( GLX_STEREO,           modes->stereoMode );
-
-	WRITE_PAIR( GLX_BUFFER_SIZE,      modes->rgbBits );
-	WRITE_PAIR( GLX_LEVEL,            modes->level );
-	WRITE_PAIR( GLX_AUX_BUFFERS,      modes->numAuxBuffers );
-	WRITE_PAIR( GLX_RED_SIZE,         modes->redBits );
-	WRITE_PAIR( GLX_GREEN_SIZE,       modes->greenBits );
-	WRITE_PAIR( GLX_BLUE_SIZE,        modes->blueBits );
-	WRITE_PAIR( GLX_ALPHA_SIZE,       modes->alphaBits );
-	WRITE_PAIR( GLX_ACCUM_RED_SIZE,   modes->accumRedBits );
-	WRITE_PAIR( GLX_ACCUM_GREEN_SIZE, modes->accumGreenBits );
-	WRITE_PAIR( GLX_ACCUM_BLUE_SIZE,  modes->accumBlueBits );
-	WRITE_PAIR( GLX_ACCUM_ALPHA_SIZE, modes->accumAlphaBits );
-	WRITE_PAIR( GLX_DEPTH_SIZE,       modes->depthBits );
-	WRITE_PAIR( GLX_STENCIL_SIZE,     modes->stencilBits );
-	WRITE_PAIR( GLX_X_VISUAL_TYPE,    modes->visualType );
-	WRITE_PAIR( GLX_CONFIG_CAVEAT, modes->visualRating );
-	WRITE_PAIR( GLX_TRANSPARENT_TYPE, modes->transparentPixel );
-	WRITE_PAIR( GLX_TRANSPARENT_RED_VALUE, modes->transparentRed );
-	WRITE_PAIR( GLX_TRANSPARENT_GREEN_VALUE, modes->transparentGreen );
-	WRITE_PAIR( GLX_TRANSPARENT_BLUE_VALUE, modes->transparentBlue );
-	WRITE_PAIR( GLX_TRANSPARENT_ALPHA_VALUE, modes->transparentAlpha );
-	WRITE_PAIR( GLX_TRANSPARENT_INDEX_VALUE, modes->transparentIndex );
-	WRITE_PAIR( GLX_SWAP_METHOD_OML, modes->swapMethod );
-	WRITE_PAIR( GLX_SAMPLES_SGIS, modes->samples );
-	WRITE_PAIR( GLX_SAMPLE_BUFFERS_SGIS, modes->sampleBuffers );
-	/* GLX_VISUAL_SELECT_GROUP_SGIX ? */
-	WRITE_PAIR( GLX_DRAWABLE_TYPE, modes->drawableType );
-	WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGB_EXT, modes->bindToTextureRgb );
-	WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGBA_EXT, modes->bindToTextureRgba );
-	WRITE_PAIR( GLX_BIND_TO_MIPMAP_TEXTURE_EXT, modes->bindToMipmapTexture );
-	WRITE_PAIR( GLX_BIND_TO_TEXTURE_TARGETS_EXT, modes->bindToTextureTargets );
-
-	if (client->swapped) {
-	    __GLX_SWAP_INT_ARRAY(buf, __GLX_FBCONFIG_ATTRIBS_LENGTH);
-	}
-	WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_FBCONFIG_ATTRIBS_LENGTH,
-		      (char *)buf);
-    }
-    return Success;
-}
-
-
-int __glXDisp_GetFBConfigs(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc;
-    return DoGetFBConfigs(cl, req->screen);
-}
-
-int __glXDisp_GetFBConfigsSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *) pc;
-    return DoGetFBConfigs(cl, req->screen);
-}
-
-GLboolean
-__glXDrawableInit(__GLXdrawable *drawable,
-		  __GLXscreen *screen, DrawablePtr pDraw, int type,
-		  XID drawId, __GLXconfig *config)
-{
-    drawable->pDraw = pDraw;
-    drawable->type = type;
-    drawable->drawId = drawId;
-    drawable->config = config;
-    drawable->eventMask = 0;
-
-    return GL_TRUE;
-}
-
-void
-__glXDrawableRelease(__GLXdrawable *drawable)
-{
-    ScreenPtr pScreen = drawable->pDraw->pScreen;
-
-    switch (drawable->type) {
-    case GLX_DRAWABLE_PIXMAP:
-    case GLX_DRAWABLE_PBUFFER:
-	(*pScreen->DestroyPixmap)((PixmapPtr) drawable->pDraw);
-	break;
-    }
-}
-
-static int 
-DoCreateGLXDrawable(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config,
-		    DrawablePtr pDraw, XID glxDrawableId, int type)
-{
-    __GLXdrawable *pGlxDraw;
-
-    LEGAL_NEW_RESOURCE(glxDrawableId, client);
-
-    if (pGlxScreen->pScreen != pDraw->pScreen)
-	return BadMatch;
-
-    pGlxDraw = pGlxScreen->createDrawable(pGlxScreen, pDraw, type,
-					  glxDrawableId, config);
-    if (pGlxDraw == NULL)
-	return BadAlloc;
-
-    if (!AddResource(glxDrawableId, __glXDrawableRes, pGlxDraw)) {
-	pGlxDraw->destroy (pGlxDraw);
-	return BadAlloc;
-    }
-
-    return Success;
-}
-
-static int
-DoCreateGLXPixmap(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config,
-		  XID drawableId, XID glxDrawableId)
-{
-    DrawablePtr pDraw;
-    int err;
-
-    err = dixLookupDrawable(&pDraw, drawableId, client, 0, DixAddAccess);
-    if (err != Success) {
-	client->errorValue = drawableId;
-	return err;
-    }
-    if (pDraw->type != DRAWABLE_PIXMAP) {
-	client->errorValue = drawableId;
-	return BadPixmap;
-    }
-
-    err = DoCreateGLXDrawable(client, pGlxScreen, config, pDraw,
-			      glxDrawableId, GLX_DRAWABLE_PIXMAP);
-
-    if (err == Success)
-	((PixmapPtr) pDraw)->refcnt++;
-
-    return err;
-}
-
-static void
-determineTextureTarget(ClientPtr client, XID glxDrawableID,
-		       CARD32 *attribs, CARD32 numAttribs)
-{
-    GLenum target = 0;
-    GLenum format = 0;
-    int i, err;
-    __GLXdrawable *pGlxDraw;
-
-    if (!validGlxDrawable(client, glxDrawableID, GLX_DRAWABLE_PIXMAP,
-			  DixWriteAccess, &pGlxDraw, &err))
-	/* We just added it in CreatePixmap, so we should never get here. */
-	return;
-
-    for (i = 0; i < numAttribs; i++) {
-	if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {
-	    switch (attribs[2 * i + 1]) {
-	    case GLX_TEXTURE_2D_EXT:
-		target = GL_TEXTURE_2D;
-		break;
-	    case GLX_TEXTURE_RECTANGLE_EXT:
-		target = GL_TEXTURE_RECTANGLE_ARB;
-		break;
-	    }
-	}
-
-	if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)
-		format = attribs[2 * i + 1];
-    }
- 
-    if (!target) {
-	int w = pGlxDraw->pDraw->width, h = pGlxDraw->pDraw->height;
-	
-	if (h & (h - 1) || w & (w - 1))
-	    target = GL_TEXTURE_RECTANGLE_ARB;
-	else
-	    target = GL_TEXTURE_2D;
-    }
-
-    pGlxDraw->target = target;
-    pGlxDraw->format = format;
-}
-
-int __glXDisp_CreateGLXPixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;
-    __GLXconfig *config;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err))
-	return err;
-
-    return DoCreateGLXPixmap(cl->client, pGlxScreen, config,
-			     req->pixmap, req->glxpixmap);
-}
-
-int __glXDisp_CreatePixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc;
-    __GLXconfig *config;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
-	return err;
-
-    err = DoCreateGLXPixmap(cl->client, pGlxScreen, config,
-			    req->pixmap, req->glxpixmap);
-    if (err != Success)
-	return err;
-
-    determineTextureTarget(cl->client, req->glxpixmap,
-			   (CARD32*) (req + 1), req->numAttribs);
-
-    return Success;
-}
-
-int __glXDisp_CreateGLXPixmapWithConfigSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateGLXPixmapWithConfigSGIXReq *req = 
-	(xGLXCreateGLXPixmapWithConfigSGIXReq *) pc;
-    __GLXconfig *config;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))
-	return err;
-
-    return DoCreateGLXPixmap(cl->client, pGlxScreen,
-			     config, req->pixmap, req->glxpixmap);
-}
-
-
-static int DoDestroyDrawable(__GLXclientState *cl, XID glxdrawable, int type)
-{
-    __GLXdrawable *pGlxDraw;
-    int err;
-
-    if (!validGlxDrawable(cl->client, glxdrawable, type,
-			  DixDestroyAccess, &pGlxDraw, &err))
-	return err;
-
-    FreeResource(glxdrawable, FALSE);
-
-    return Success;
-}
-
-int __glXDisp_DestroyGLXPixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;
-
-    return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);
-}
-
-int __glXDisp_DestroyPixmap(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXDestroyPixmapReq *req = (xGLXDestroyPixmapReq *) pc;
-
-    return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);
-}
-
-static int
-DoCreatePbuffer(ClientPtr client, int screenNum, XID fbconfigId,
-		int width, int height, XID glxDrawableId)
-{
-    __GLXconfig	*config;
-    __GLXscreen		*pGlxScreen;
-    PixmapPtr		 pPixmap;
-    int			 err;
-
-    if (!validGlxScreen(client, screenNum, &pGlxScreen, &err))
-	return err;
-    if (!validGlxFBConfig(client, pGlxScreen, fbconfigId, &config, &err))
-	return err;
-
-    __glXenterServer(GL_FALSE);
-    pPixmap = (*pGlxScreen->pScreen->CreatePixmap) (pGlxScreen->pScreen,
-						    width, height, config->rgbBits, 0);
-    __glXleaveServer(GL_FALSE);
-
-    return DoCreateGLXDrawable(client, pGlxScreen, config, &pPixmap->drawable,
-			       glxDrawableId, GLX_DRAWABLE_PBUFFER);
-}
-
-int __glXDisp_CreatePbuffer(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreatePbufferReq	*req = (xGLXCreatePbufferReq *) pc;
-    CARD32			*attrs;
-    int				 width, height, i;
-
-    attrs = (CARD32 *) (req + 1);
-    width = 0;
-    height = 0;
-
-    for (i = 0; i < req->numAttribs; i++) {
-	switch (attrs[i * 2]) {
-	case GLX_PBUFFER_WIDTH:
-	    width = attrs[i * 2 + 1];
-	    break;
-	case GLX_PBUFFER_HEIGHT:
-	    height = attrs[i * 2 + 1];
-	    break;
-	case GLX_LARGEST_PBUFFER:
-	case GLX_PRESERVED_CONTENTS:
-	    /* FIXME: huh... */
-	    break;
-	}
-    }
-
-    return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,
-			   width, height, req->pbuffer);
-}
-
-int __glXDisp_CreateGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateGLXPbufferSGIXReq *req = (xGLXCreateGLXPbufferSGIXReq *) pc;
-
-    return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,
-			   req->width, req->height, req->pbuffer);
-}
-
-int __glXDisp_DestroyPbuffer(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc;
-
-    return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);
-}
-
-int __glXDisp_DestroyGLXPbufferSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXDestroyGLXPbufferSGIXReq *req = (xGLXDestroyGLXPbufferSGIXReq *) pc;
-
-    return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);
-}
-
-static int
-DoChangeDrawableAttributes(ClientPtr client, XID glxdrawable,
-			   int numAttribs, CARD32 *attribs)
-{
-    __GLXdrawable *pGlxDraw;
-    int i, err;
-
-    if (!validGlxDrawable(client, glxdrawable, GLX_DRAWABLE_ANY,
-			  DixSetAttrAccess, &pGlxDraw, &err))
-	return err;
-
-    for (i = 0; i < numAttribs; i++) {
-	switch(attribs[i * 2]) {
-	case GLX_EVENT_MASK:
-	    /* All we do is to record the event mask so we can send it
-	     * back when queried.  We never actually clobber the
-	     * pbuffers, so we never need to send out the event. */
-	    pGlxDraw->eventMask = attribs[i * 2 + 1];
-	    break;
-	}
-    }
-
-    return Success;
-}
-
-int __glXDisp_ChangeDrawableAttributes(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXChangeDrawableAttributesReq *req =
-	(xGLXChangeDrawableAttributesReq *) pc;
-
-    return DoChangeDrawableAttributes(cl->client, req->drawable,
-				      req->numAttribs, (CARD32 *) (req + 1));
-}
-
-int __glXDisp_ChangeDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXChangeDrawableAttributesSGIXReq *req =
-	(xGLXChangeDrawableAttributesSGIXReq *)pc;
-
-    return DoChangeDrawableAttributes(cl->client, req->drawable,
-				      req->numAttribs, (CARD32 *) (req + 1));
-}
-
-int __glXDisp_CreateWindow(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXCreateWindowReq	*req = (xGLXCreateWindowReq *) pc;
-    __GLXconfig	*config;
-    __GLXscreen		*pGlxScreen;
-    ClientPtr		 client = cl->client;
-    DrawablePtr		 pDraw;
-    int			 err;
-
-    if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
-	return err;
-    if (!validGlxFBConfig(client, pGlxScreen, req->fbconfig, &config, &err))
-	return err;
-
-    err = dixLookupDrawable(&pDraw, req->window, client, 0, DixAddAccess);
-    if (err != Success || pDraw->type != DRAWABLE_WINDOW) {
-	client->errorValue = req->window;
-	return BadWindow;
-    }
-
-    if (!validGlxFBConfigForWindow(client, config, pDraw, &err))
-	return err;
-
-    return DoCreateGLXDrawable(client, pGlxScreen, config,
-			       pDraw, req->glxwindow, GLX_DRAWABLE_WINDOW);
-}
-
-int __glXDisp_DestroyWindow(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc;
-
-    return DoDestroyDrawable(cl, req->glxwindow, GLX_DRAWABLE_WINDOW);
-}
-
-
-/*****************************************************************************/
-
-/*
-** 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 __glXDisp_SwapBuffers(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;
-    GLXContextTag tag = req->contextTag;
-    XID drawId = req->drawable;
-    __GLXcontext *glxc = NULL;
-    __GLXdrawable *pGlxDraw;
-    int error;
-
-    if (tag) {
-	glxc = __glXLookupContextByTag(cl, tag);
-	if (!glxc) {
-	    return __glXError(GLXBadContextTag);
-	}
-	/*
-	** The calling thread is swapping its current drawable.  In this case,
-	** glxSwapBuffers is in both GL and X streams, in terms of
-	** sequentiality.
-	*/
-	if (__glXForceCurrent(cl, tag, &error)) {
-	    /*
-	    ** Do whatever is needed to make sure that all preceding requests
-	    ** in both streams are completed before the swap is executed.
-	    */
-	    CALL_Finish( GET_DISPATCH(), () );
-	    __GLX_NOTE_FLUSHED_CMDS(glxc);
-	} else {
-	    return error;
-	}
-    }
-
-    pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);
-    if (pGlxDraw == NULL)
-	return error;
-
-    if (pGlxDraw->type == DRAWABLE_WINDOW &&
-	(*pGlxDraw->swapBuffers)(pGlxDraw) == GL_FALSE)
-	return __glXError(GLXBadDrawable);
-
-    return Success;
-}
-
-
-static int
-DoQueryContext(__GLXclientState *cl, GLXContextID gcId)
-{
-    ClientPtr client = cl->client;
-    __GLXcontext *ctx;
-    xGLXQueryContextInfoEXTReply reply;
-    int nProps;
-    int *sendBuf, *pSendBuf;
-    int nReplyBytes;
-    int err;
-
-    if (!validGlxContext(cl->client, gcId, DixReadAccess, &ctx, &err))
-	return err;
-
-    nProps = 3;
-    reply.length = nProps << 1;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.n = nProps;
-
-    nReplyBytes = reply.length << 2;
-    sendBuf = (int *)xalloc((size_t)nReplyBytes);
-    if (sendBuf == NULL) {
-	return __glXError(GLXBadContext);	/* XXX: Is this correct? */
-    }
-    pSendBuf = sendBuf;
-    *pSendBuf++ = GLX_SHARE_CONTEXT_EXT;
-    *pSendBuf++ = (int)(ctx->share_id);
-    *pSendBuf++ = GLX_VISUAL_ID_EXT;
-    *pSendBuf++ = (int)(ctx->config->visualID);
-    *pSendBuf++ = GLX_SCREEN_EXT;
-    *pSendBuf++ = (int)(ctx->pGlxScreen->pScreen->myNum);
-
-    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 __glXDisp_QueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc;
-
-    return DoQueryContext(cl, req->context);
-}
-
-int __glXDisp_QueryContext(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXQueryContextReq *req = (xGLXQueryContextReq *) pc;
-
-    return DoQueryContext(cl, req->context);
-}
-
-int __glXDisp_BindTexImageEXT(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
-    ClientPtr		 client = cl->client;
-    __GLXcontext	*context;
-    __GLXdrawable	*pGlxDraw;
-    GLXDrawable		 drawId;
-    int			 buffer;
-    int			 error;
-
-    pc += __GLX_VENDPRIV_HDR_SIZE;
-
-    drawId = *((CARD32 *) (pc));
-    buffer = *((INT32 *)  (pc + 4));
-
-    if (buffer != GLX_FRONT_LEFT_EXT)
-	return __glXError(GLXBadPixmap);
-
-    context = __glXForceCurrent (cl, req->contextTag, &error);
-    if (!context)
-	return error;
-
-    if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP,
-			  DixReadAccess, &pGlxDraw, &error))
-	return error;
-
-    if (!context->textureFromPixmap)
-	return __glXError(GLXUnsupportedPrivateRequest);
-
-    return context->textureFromPixmap->bindTexImage(context,
-						    buffer,
-						    pGlxDraw);
-}
-
-int __glXDisp_ReleaseTexImageEXT(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
-    ClientPtr		 client = cl->client;
-    __GLXdrawable	*pGlxDraw;
-    __GLXcontext	*context;
-    GLXDrawable		 drawId;
-    int			 buffer;
-    int			 error;
-
-    pc += __GLX_VENDPRIV_HDR_SIZE;
-
-    drawId = *((CARD32 *) (pc));
-    buffer = *((INT32 *)  (pc + 4));
-    
-    context = __glXForceCurrent (cl, req->contextTag, &error);
-    if (!context)
-	return error;
-
-    if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP,
-			  DixReadAccess, &pGlxDraw, &error))
-	return error;
-
-    if (!context->textureFromPixmap)
-	return __glXError(GLXUnsupportedPrivateRequest);
-
-    return context->textureFromPixmap->releaseTexImage(context,
-						       buffer,
-						       pGlxDraw);
-}
-
-int __glXDisp_CopySubBufferMESA(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
-    GLXContextTag         tag = req->contextTag;
-    __GLXcontext         *glxc = NULL;
-    __GLXdrawable        *pGlxDraw;
-    ClientPtr		  client = cl->client;
-    GLXDrawable		  drawId;
-    int                   error;
-    int                   x, y, width, height;
-
-    (void) client;
-    (void) req;
-
-    pc += __GLX_VENDPRIV_HDR_SIZE;
-
-    drawId = *((CARD32 *) (pc));
-    x      = *((INT32 *)  (pc + 4));
-    y      = *((INT32 *)  (pc + 8));
-    width  = *((INT32 *)  (pc + 12));
-    height = *((INT32 *)  (pc + 16));
-
-    if (tag) {
-	glxc = __glXLookupContextByTag(cl, tag);
-	if (!glxc) {
-	    return __glXError(GLXBadContextTag);
-	}
-	/*
-	** The calling thread is swapping its current drawable.  In this case,
-	** glxSwapBuffers is in both GL and X streams, in terms of
-	** sequentiality.
-	*/
-	if (__glXForceCurrent(cl, tag, &error)) {
-	    /*
-	    ** Do whatever is needed to make sure that all preceding requests
-	    ** in both streams are completed before the swap is executed.
-	    */
-	    CALL_Finish( GET_DISPATCH(), () );
-	    __GLX_NOTE_FLUSHED_CMDS(glxc);
-	} else {
-	    return error;
-	}
-    }
-
-    pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);
-    if (!pGlxDraw)
-	return error;
-
-    if (pGlxDraw == NULL ||
-	pGlxDraw->type != GLX_DRAWABLE_WINDOW ||
-	pGlxDraw->copySubBuffer == NULL)
-	return __glXError(GLXBadDrawable);
-
-    (*pGlxDraw->copySubBuffer)(pGlxDraw, x, y, width, height);
-
-    return Success;
-}
-
-/*
-** Get drawable attributes
-*/
-static int
-DoGetDrawableAttributes(__GLXclientState *cl, XID drawId)
-{
-    ClientPtr client = cl->client;
-    xGLXGetDrawableAttributesReply reply;
-    __GLXdrawable *pGlxDraw;
-    CARD32 attributes[6];
-    int numAttribs, error;
-
-    if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY,
-			  DixGetAttrAccess, &pGlxDraw, &error))
-	return error;
-
-    numAttribs = 3;
-    reply.length = numAttribs << 1;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.numAttribs = numAttribs;
-
-    attributes[0] = GLX_TEXTURE_TARGET_EXT;
-    attributes[1] = pGlxDraw->target == GL_TEXTURE_2D ? GLX_TEXTURE_2D_EXT :
-	GLX_TEXTURE_RECTANGLE_EXT;
-    attributes[2] = GLX_Y_INVERTED_EXT;
-    attributes[3] = GL_FALSE;
-    attributes[4] = GLX_EVENT_MASK;
-    attributes[5] = pGlxDraw->eventMask;
-
-    if (client->swapped) {
-	__glXSwapGetDrawableAttributesReply(client, &reply, attributes);
-    } else {
-	WriteToClient(client, sz_xGLXGetDrawableAttributesReply,
-		      (char *)&reply);
-	WriteToClient(client, reply.length * sizeof (CARD32),
-		      (char *)attributes);
-    }
-
-    return Success;
-}
-
-int __glXDisp_GetDrawableAttributes(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc;
-
-    return DoGetDrawableAttributes(cl, req->drawable);
-}
-
-int __glXDisp_GetDrawableAttributesSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXGetDrawableAttributesSGIXReq *req =
-	(xGLXGetDrawableAttributesSGIXReq *)pc;
-    
-    return DoGetDrawableAttributes(cl, req->drawable);
-}
-
-/************************************************************************/
-
-/*
-** 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 __glXDisp_Render(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXRenderReq *req;
-    ClientPtr client= cl->client;
-    int left, cmdlen, error;
-    int commandsDone;
-    CARD16 opcode;
-    __GLXrenderHeader *hdr;
-    __GLXcontext *glxc;
-    __GLX_DECLARE_SWAP_VARIABLES;
-
-    req = (xGLXRenderReq *) pc;
-    if (client->swapped) {
-	__GLX_SWAP_SHORT(&req->length);
-	__GLX_SWAP_INT(&req->contextTag);
-    }
-
-    glxc = __glXForceCurrent(cl, req->contextTag, &error);
-    if (!glxc) {
-	return error;
-    }
-
-    commandsDone = 0;
-    pc += sz_xGLXRenderReq;
-    left = (req->length << 2) - sz_xGLXRenderReq;
-    while (left > 0) {
-        __GLXrenderSizeData entry;
-        int extra;
-	__GLXdispatchRenderProcPtr proc;
-	int err;
-
-	/*
-	** Verify that the header length and the overall length agree.
-	** Also, each command must be word aligned.
-	*/
-	hdr = (__GLXrenderHeader *) pc;
-	if (client->swapped) {
-	    __GLX_SWAP_SHORT(&hdr->length);
-	    __GLX_SWAP_SHORT(&hdr->opcode);
-	}
-	cmdlen = hdr->length;
-	opcode = hdr->opcode;
-
-	/*
-	** Check for core opcodes and grab entry data.
-	*/
-	err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);
-	proc = (__GLXdispatchRenderProcPtr)
-	    __glXGetProtocolDecodeFunction(& Render_dispatch_info,
-					   opcode, client->swapped);
-
-	if ((err < 0) || (proc == NULL)) {
-	    client->errorValue = commandsDone;
-	    return __glXError(GLXBadRenderRequest);
-	}
-
-        if (entry.varsize) {
-            /* variable size command */
-            extra = (*entry.varsize)(pc + __GLX_RENDER_HDR_SIZE,
-				     client->swapped);
-            if (extra < 0) {
-                extra = 0;
-            }
-            if (cmdlen != __GLX_PAD(entry.bytes + extra)) {
-                return BadLength;
-            }
-        } else {
-            /* constant size command */
-            if (cmdlen != __GLX_PAD(entry.bytes)) {
-                return BadLength;
-            }
-        }
-	if (left < cmdlen) {
-	    return BadLength;
-	}
-
-	/*
-	** Skip over the header and execute the command.  We allow the
-	** caller to trash the command memory.  This is useful especially
-	** for things that require double alignment - they can just shift
-	** the data towards lower memory (trashing the header) by 4 bytes
-	** and achieve the required alignment.
-	*/
-	(*proc)(pc + __GLX_RENDER_HDR_SIZE);
-	pc += cmdlen;
-	left -= cmdlen;
-	commandsDone++;
-    }
-    __GLX_NOTE_UNFLUSHED_CMDS(glxc);
-    return Success;
-}
-
-
-/*
-** Execute a large rendering request (one that spans multiple X requests).
-*/
-int __glXDisp_RenderLarge(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXRenderLargeReq *req;
-    ClientPtr client= cl->client;
-    size_t dataBytes;
-    __GLXrenderLargeHeader *hdr;
-    __GLXcontext *glxc;
-    int error;
-    CARD16 opcode;
-    __GLX_DECLARE_SWAP_VARIABLES;
-    
-    req = (xGLXRenderLargeReq *) pc;
-    if (client->swapped) {
-	__GLX_SWAP_SHORT(&req->length);
-	__GLX_SWAP_INT(&req->contextTag);
-	__GLX_SWAP_INT(&req->dataBytes);
-	__GLX_SWAP_SHORT(&req->requestNumber);
-	__GLX_SWAP_SHORT(&req->requestTotal);
-    }
-
-    glxc = __glXForceCurrent(cl, req->contextTag, &error);
-    if (!glxc) {
-	/* Reset in case this isn't 1st request. */
-	__glXResetLargeCommandStatus(cl);
-	return error;
-    }
-    dataBytes = req->dataBytes;
-
-    /*
-    ** Check the request length.
-    */
-    if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) {
-	client->errorValue = req->length;
-	/* Reset in case this isn't 1st request. */
-	__glXResetLargeCommandStatus(cl);
-	return BadLength;
-    }
-    pc += sz_xGLXRenderLargeReq;
-    
-    if (cl->largeCmdRequestsSoFar == 0) {
-	__GLXrenderSizeData entry;
-	int extra;
-	size_t cmdlen;
-	int err;
-
-	/*
-	** This is the first request of a multi request command.
-	** Make enough space in the buffer, then copy the entire request.
-	*/
-	if (req->requestNumber != 1) {
-	    client->errorValue = req->requestNumber;
-	    return __glXError(GLXBadLargeRequest);
-	}
-
-	hdr = (__GLXrenderLargeHeader *) pc;
-	if (client->swapped) {
-	    __GLX_SWAP_INT(&hdr->length);
-	    __GLX_SWAP_INT(&hdr->opcode);
-	}
-	cmdlen = hdr->length;
-	opcode = hdr->opcode;
-
-	/*
-	** Check for core opcodes and grab entry data.
-	*/
-	err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);
-	if (err < 0) {
-	    client->errorValue = opcode;
-	    return __glXError(GLXBadLargeRequest);
-	}
-
-	if (entry.varsize) {
-	    /*
-	    ** If it's a variable-size command (a command whose length must
-	    ** be computed from its parameters), all the parameters needed
-	    ** will be in the 1st request, so it's okay to do this.
-	    */
-	    extra = (*entry.varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE,
-				     client->swapped);
-	    if (extra < 0) {
-		extra = 0;
-	    }
-	    /* large command's header is 4 bytes longer, so add 4 */
-	    if (cmdlen != __GLX_PAD(entry.bytes + 4 + extra)) {
-		return BadLength;
-	    }
-	} else {
-	    /* constant size command */
-	    if (cmdlen != __GLX_PAD(entry.bytes + 4)) {
-		return BadLength;
-	    }
-	}
-	/*
-	** Make enough space in the buffer, then copy the entire request.
-	*/
-	if (cl->largeCmdBufSize < cmdlen) {
-	    if (!cl->largeCmdBuf) {
-		cl->largeCmdBuf = (GLbyte *) xalloc(cmdlen);
-	    } else {
-		cl->largeCmdBuf = (GLbyte *) xrealloc(cl->largeCmdBuf, cmdlen);
-	    }
-	    if (!cl->largeCmdBuf) {
-		return BadAlloc;
-	    }
-	    cl->largeCmdBufSize = cmdlen;
-	}
-	memcpy(cl->largeCmdBuf, pc, dataBytes);
-
-	cl->largeCmdBytesSoFar = dataBytes;
-	cl->largeCmdBytesTotal = cmdlen;
-	cl->largeCmdRequestsSoFar = 1;
-	cl->largeCmdRequestsTotal = req->requestTotal;
-	return Success;
-	
-    } else {
-	/*
-	** We are receiving subsequent (i.e. not the first) requests of a
-	** multi request command.
-	*/
-
-	/*
-	** Check the request number and the total request count.
-	*/
-	if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) {
-	    client->errorValue = req->requestNumber;
-	    __glXResetLargeCommandStatus(cl);
-	    return __glXError(GLXBadLargeRequest);
-	}
-	if (req->requestTotal != cl->largeCmdRequestsTotal) {
-	    client->errorValue = req->requestTotal;
-	    __glXResetLargeCommandStatus(cl);
-	    return __glXError(GLXBadLargeRequest);
-	}
-
-	/*
-	** Check that we didn't get too much data.
-	*/
-	if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) {
-	    client->errorValue = dataBytes;
-	    __glXResetLargeCommandStatus(cl);
-	    return __glXError(GLXBadLargeRequest);
-	}
-	memcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes);
-	cl->largeCmdBytesSoFar += dataBytes;
-	cl->largeCmdRequestsSoFar++;
-
-	if (req->requestNumber == cl->largeCmdRequestsTotal) {
-	    __GLXdispatchRenderProcPtr proc;
-
-	    /*
-	    ** This is the last request; it must have enough bytes to complete
-	    ** the command.
-	    */
-	    /* NOTE: the two pad macros have been added below; they are needed
-	    ** because the client library pads the total byte count, but not
-	    ** the per-request byte counts.  The Protocol Encoding says the
-	    ** total byte count should not be padded, so a proposal will be 
-	    ** made to the ARB to relax the padding constraint on the total 
-	    ** byte count, thus preserving backward compatibility.  Meanwhile, 
-	    ** the padding done below fixes a bug that did not allow
-	    ** large commands of odd sizes to be accepted by the server.
-	    */
-	    if (__GLX_PAD(cl->largeCmdBytesSoFar) !=
-		__GLX_PAD(cl->largeCmdBytesTotal)) {
-		client->errorValue = dataBytes;
-		__glXResetLargeCommandStatus(cl);
-		return __glXError(GLXBadLargeRequest);
-	    }
-	    hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf;
-	    /*
-	    ** The opcode and length field in the header had already been
-	    ** swapped when the first request was received.
-	    **
-	    ** Use the opcode to index into the procedure table.
-	    */
-	    opcode = hdr->opcode;
-
-	    proc = (__GLXdispatchRenderProcPtr)
-	      __glXGetProtocolDecodeFunction(& Render_dispatch_info, opcode,
-					     client->swapped);
-	    if (proc == NULL) {
-		client->errorValue = opcode;
-		return __glXError(GLXBadLargeRequest);
-	    }
-
-	    /*
-	    ** Skip over the header and execute the command.
-	    */
-	    (*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE);
-	    __GLX_NOTE_UNFLUSHED_CMDS(glxc);
-
-	    /*
-	    ** Reset for the next RenderLarge series.
-	    */
-	    __glXResetLargeCommandStatus(cl);
-	} else {
-	    /*
-	    ** This is neither the first nor the last request.
-	    */
-	}
-	return Success;
-    }
-}
-
-extern RESTYPE __glXSwapBarrierRes;
-
-int __glXDisp_BindSwapBarrierSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXBindSwapBarrierSGIXReq *req = (xGLXBindSwapBarrierSGIXReq *) pc;
-    XID drawable = req->drawable;
-    int barrier = req->barrier;
-    DrawablePtr pDraw;
-    int screen, rc;
-    __GLXscreen *pGlxScreen;
-
-    rc = dixLookupDrawable(&pDraw, drawable, client, 0, DixGetAttrAccess);
-    pGlxScreen = glxGetScreen(pDraw->pScreen);
-    if (rc == Success && (pDraw->type == DRAWABLE_WINDOW)) {
-	screen = pDraw->pScreen->myNum;
-        if (pGlxScreen->swapBarrierFuncs) {
-            int ret = pGlxScreen->swapBarrierFuncs->bindSwapBarrierFunc(screen, drawable, barrier);
-            if (ret == Success) {
-                if (barrier)
-                    /* add source for cleanup when drawable is gone */
-                    AddResource(drawable, __glXSwapBarrierRes, (pointer)screen);
-                else
-                    /* delete source */
-                    FreeResourceByType(drawable, __glXSwapBarrierRes, FALSE);
-            }
-            return ret;
-        }
-    }
-    client->errorValue = drawable;
-    return __glXError(GLXBadDrawable);
-}
-
-
-int __glXDisp_QueryMaxSwapBarriersSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryMaxSwapBarriersSGIXReq *req =
-                                    (xGLXQueryMaxSwapBarriersSGIXReq *) pc;
-    xGLXQueryMaxSwapBarriersSGIXReply reply;
-    int screen = req->screen;
-    __GLXscreen *pGlxScreen;
-
-    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-    if (pGlxScreen->swapBarrierFuncs)
-        reply.max = pGlxScreen->swapBarrierFuncs->queryMaxSwapBarriersFunc(screen);
-    else
-        reply.max = 0;
-
-
-    reply.length = 0;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-
-    if (client->swapped) {
-        __GLX_DECLARE_SWAP_VARIABLES;
-        __GLX_SWAP_SHORT(&reply.sequenceNumber);
-    }
-
-    WriteToClient(client, sz_xGLXQueryMaxSwapBarriersSGIXReply,
-                        (char *) &reply);
-    return Success;
-}
-
-#define GLX_BAD_HYPERPIPE_SGIX 92
-
-int __glXDisp_QueryHyperpipeNetworkSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryHyperpipeNetworkSGIXReq * req = (xGLXQueryHyperpipeNetworkSGIXReq *) pc;
-    xGLXQueryHyperpipeNetworkSGIXReply reply;
-    int screen = req->screen;
-    void *rdata = NULL;
-
-    int length=0;
-    int npipes=0;
-
-    int n= 0;
-    __GLXscreen *pGlxScreen;
-
-    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-    if (pGlxScreen->hyperpipeFuncs) {
-        rdata =
-            (pGlxScreen->hyperpipeFuncs->queryHyperpipeNetworkFunc(screen, &npipes, &n));
-    }
-    length = __GLX_PAD(n) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = length;
-    reply.n = n;
-    reply.npipes = npipes;
-
-    if (client->swapped) {
-        __GLX_DECLARE_SWAP_VARIABLES;
-        __GLX_SWAP_SHORT(&reply.sequenceNumber);
-        __GLX_SWAP_INT(&reply.length);
-        __GLX_SWAP_INT(&reply.n);
-        __GLX_SWAP_INT(&reply.npipes);
-    }
-    WriteToClient(client, sz_xGLXQueryHyperpipeNetworkSGIXReply,
-                  (char *) &reply);
-
-    WriteToClient(client, length << 2, (char *)rdata);
-
-    return Success;
-}
-
-int __glXDisp_DestroyHyperpipeConfigSGIX (__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXDestroyHyperpipeConfigSGIXReq * req =
-        (xGLXDestroyHyperpipeConfigSGIXReq *) pc;
-    xGLXDestroyHyperpipeConfigSGIXReply reply;
-    int screen = req->screen;
-    int  success = GLX_BAD_HYPERPIPE_SGIX;
-    int hpId ;
-    __GLXscreen *pGlxScreen;
-
-    hpId = req->hpId;
-
-    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-    if (pGlxScreen->hyperpipeFuncs) {
-        success = pGlxScreen->hyperpipeFuncs->destroyHyperpipeConfigFunc(screen, hpId);
-    }
-
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = __GLX_PAD(0) >> 2;
-    reply.n = 0;
-    reply.success = success;
-
-
-    if (client->swapped) {
-        __GLX_DECLARE_SWAP_VARIABLES;
-        __GLX_SWAP_SHORT(&reply.sequenceNumber);
-    }
-    WriteToClient(client,
-                  sz_xGLXDestroyHyperpipeConfigSGIXReply,
-                  (char *) &reply);
-    return Success;
-}
-
-int __glXDisp_QueryHyperpipeConfigSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryHyperpipeConfigSGIXReq * req =
-        (xGLXQueryHyperpipeConfigSGIXReq *) pc;
-    xGLXQueryHyperpipeConfigSGIXReply reply;
-    int screen = req->screen;
-    void *rdata = NULL;
-    int length;
-    int npipes=0;
-    int n= 0;
-    int hpId;
-    __GLXscreen *pGlxScreen;
-
-    hpId = req->hpId;
-
-    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-    if (pGlxScreen->hyperpipeFuncs) {
-        rdata = pGlxScreen->hyperpipeFuncs->queryHyperpipeConfigFunc(screen, hpId,&npipes, &n);
-    }
-
-    length = __GLX_PAD(n) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = length;
-    reply.n = n;
-    reply.npipes = npipes;
-
-
-    if (client->swapped) {
-        __GLX_DECLARE_SWAP_VARIABLES;
-        __GLX_SWAP_SHORT(&reply.sequenceNumber);
-        __GLX_SWAP_INT(&reply.length);
-        __GLX_SWAP_INT(&reply.n);
-        __GLX_SWAP_INT(&reply.npipes);
-    }
-
-    WriteToClient(client, sz_xGLXQueryHyperpipeConfigSGIXReply,
-                  (char *) &reply);
-
-    WriteToClient(client, length << 2, (char *)rdata);
-
-    return Success;
-}
-
-int __glXDisp_HyperpipeConfigSGIX(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXHyperpipeConfigSGIXReq * req =
-        (xGLXHyperpipeConfigSGIXReq *) pc;
-    xGLXHyperpipeConfigSGIXReply reply;
-    int screen = req->screen;
-    void *rdata;
-
-    int npipes=0, networkId;
-    int hpId=-1;
-    __GLXscreen *pGlxScreen;
-
-    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);
-    networkId = (int)req->networkId;
-    npipes = (int)req->npipes;
-    rdata = (void *)(req +1);
-
-    if (pGlxScreen->hyperpipeFuncs) {
-        pGlxScreen->hyperpipeFuncs->hyperpipeConfigFunc(screen,networkId,
-                                                        &hpId, &npipes,
-                                                        (void *) rdata);
-    }
-
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = __GLX_PAD(0) >> 2;
-    reply.n = 0;
-    reply.npipes = npipes;
-    reply.hpId = hpId;
-
-    if (client->swapped) {
-        __GLX_DECLARE_SWAP_VARIABLES;
-        __GLX_SWAP_SHORT(&reply.sequenceNumber);
-        __GLX_SWAP_INT(&reply.npipes);
-        __GLX_SWAP_INT(&reply.hpId);
-    }
-
-    WriteToClient(client, sz_xGLXHyperpipeConfigSGIXReply,
-                  (char *) &reply);
-
-    return Success;
-}
-
-
-/************************************************************************/
-
-/*
-** No support is provided for the vendor-private requests other than
-** allocating the entry points in the dispatch table.
-*/
-
-int __glXDisp_VendorPrivate(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
-    GLint vendorcode = req->vendorCode;
-    __GLXdispatchVendorPrivProcPtr proc;
-
-
-    proc = (__GLXdispatchVendorPrivProcPtr)
-      __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info,
-				     vendorcode, 0);
-    if (proc != NULL) {
-	(*proc)(cl, (GLbyte*)req);
-	return Success;
-    }
-
-    cl->client->errorValue = req->vendorCode;
-    return __glXError(GLXUnsupportedPrivateRequest);
-}
-
-int __glXDisp_VendorPrivateWithReply(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;
-    GLint vendorcode = req->vendorCode;
-    __GLXdispatchVendorPrivProcPtr proc;
-
-
-    proc = (__GLXdispatchVendorPrivProcPtr)
-      __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info,
-				     vendorcode, 0);
-    if (proc != NULL) {
-	return (*proc)(cl, (GLbyte*)req);
-    }
-
-    cl->client->errorValue = vendorcode;
-    return __glXError(GLXUnsupportedPrivateRequest);
-}
-
-int __glXDisp_QueryExtensionsString(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc;
-    xGLXQueryExtensionsStringReply reply;
-    __GLXscreen *pGlxScreen;
-    size_t n, length;
-    char *buf;
-    int err;
-
-    if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
-	return err;
-
-    n = strlen(pGlxScreen->GLXextensions) + 1;
-    length = __GLX_PAD(n) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = length;
-    reply.n = n;
-
-    /* Allocate buffer to make sure it's a multiple of 4 bytes big.*/
-    buf = (char *) xalloc(length << 2);
-    if (buf == NULL)
-        return BadAlloc;
-    memcpy(buf, pGlxScreen->GLXextensions, n);
-
-    if (client->swapped) {
-        glxSwapQueryExtensionsStringReply(client, &reply, buf);
-    } else {
-        WriteToClient(client, sz_xGLXQueryExtensionsStringReply,(char *)&reply);
-        WriteToClient(client, (int)(length << 2), (char *)buf);
-    }
-
-    xfree(buf);
-    return Success;
-}
-
-int __glXDisp_QueryServerString(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client = cl->client;
-    xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc;
-    xGLXQueryServerStringReply reply;
-    size_t n, length;
-    const char *ptr;
-    char *buf;
-    __GLXscreen *pGlxScreen;
-    int err;
-
-    if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))
-	return err;
-
-    switch(req->name) {
-	case GLX_VENDOR:
-	    ptr = pGlxScreen->GLXvendor;
-	    break;
-	case GLX_VERSION:
-	    ptr = pGlxScreen->GLXversion;
-	    break;
-	case GLX_EXTENSIONS:
-	    ptr = pGlxScreen->GLXextensions;
-	    break;
-	default:
-	    return BadValue; 
-    }
-
-    n = strlen(ptr) + 1;
-    length = __GLX_PAD(n) >> 2;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = length;
-    reply.n = n;
-
-    buf = (char *) xalloc(length << 2);
-    if (buf == NULL) {
-        return BadAlloc;
-    }
-    memcpy(buf, ptr, n);
-
-    if (client->swapped) {
-        glxSwapQueryServerStringReply(client, &reply, buf);
-    } else {
-        WriteToClient(client, sz_xGLXQueryServerStringReply, (char *)&reply);
-        WriteToClient(client, (int)(length << 2), buf);
-    }
-
-    xfree(buf);
-    return Success;
-}
-
-int __glXDisp_ClientInfo(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;
-    const char *buf;
-   
-    cl->GLClientmajorVersion = req->major;
-    cl->GLClientminorVersion = req->minor;
-    if (cl->GLClientextensions)
-	xfree(cl->GLClientextensions);
-    buf = (const char *)(req+1);
-    cl->GLClientextensions = xstrdup(buf);
-
-    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_DIX_CONFIG_H

+#include <dix-config.h>

+#else

+

+#include "glheader.h"

+

+#endif

+

+#include <string.h>

+#include <assert.h>

+

+#include "glxserver.h"

+#include <GL/glxtokens.h>

+#include <unpack.h>

+#include "g_disptab.h"

+#include <pixmapstr.h>

+#include <windowstr.h>

+#include "glxutil.h"

+#include "glxext.h"

+#include "glapitable.h"

+#include "glapi.h"

+#include "glthread.h"

+#include "dispatch.h"

+#include "indirect_dispatch.h"

+#include "indirect_table.h"

+#include "indirect_util.h"

+#include "protocol-versions.h"

+

+static int

+validGlxScreen(ClientPtr client, int screen, __GLXscreen **pGlxScreen, int *err)

+{

+    /*

+    ** Check if screen exists.

+    */

+    if (screen >= screenInfo.numScreens) {

+	client->errorValue = screen;

+	*err = BadValue;

+	return FALSE;

+    }

+    *pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+

+    return TRUE;

+}

+

+static int

+validGlxFBConfig(ClientPtr client, __GLXscreen *pGlxScreen, XID id,

+		 __GLXconfig **config, int *err)

+{

+    __GLXconfig *m;

+

+    for (m = pGlxScreen->fbconfigs; m != NULL; m = m->next)

+	if (m->fbconfigID == id) {

+	    *config = m;

+	    return TRUE;

+	}

+

+    client->errorValue = id;

+    *err = __glXError(GLXBadFBConfig);

+

+    return FALSE;

+}

+

+static int

+validGlxVisual(ClientPtr client, __GLXscreen *pGlxScreen, XID id,

+	       __GLXconfig **config, int *err)

+{

+    int i;

+

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

+ 	if (pGlxScreen->visuals[i]->visualID == id) {

+	    *config = pGlxScreen->visuals[i];

+	    return TRUE;

+	}

+

+    client->errorValue = id;

+    *err = BadValue;

+

+    return FALSE;

+}

+

+static int

+validGlxFBConfigForWindow(ClientPtr client, __GLXconfig *config,

+			  DrawablePtr pDraw, int *err)

+{

+    ScreenPtr pScreen = pDraw->pScreen;

+    VisualPtr pVisual = NULL;

+    XID vid;

+    int i;

+

+    vid = wVisual((WindowPtr)pDraw);

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

+	if (pScreen->visuals[i].vid == vid) {

+	    pVisual = &pScreen->visuals[i];

+	    break;

+	}

+    }

+

+    /* FIXME: What exactly should we check here... */

+    if (pVisual->class != glxConvertToXVisualType(config->visualType) ||

+	!(config->drawableType & GLX_WINDOW_BIT)) {

+	client->errorValue = pDraw->id;

+	*err = BadMatch;

+	return FALSE;

+    }

+

+    return TRUE;

+}

+

+static int

+validGlxContext(ClientPtr client, XID id, int access_mode,

+		__GLXcontext **context, int *err)

+{

+    *err = dixLookupResourceByType((pointer *) context, id,

+				   __glXContextRes, client, access_mode);

+    if (*err != Success) {

+	client->errorValue = id;

+	if (*err == BadValue)

+	    *err = __glXError(GLXBadContext);

+	return FALSE;

+    }

+

+    return TRUE;

+}

+

+static int

+validGlxDrawable(ClientPtr client, XID id, int type, int access_mode,

+		 __GLXdrawable **drawable, int *err)

+{

+    int rc;

+

+    rc = dixLookupResourceByType((pointer *) drawable, id,

+				 __glXDrawableRes, client, access_mode);

+    if (rc != Success && rc != BadValue) {

+	*err = rc;

+	client->errorValue = id;

+	return FALSE;

+    }

+

+    if (rc == BadValue ||

+	(type != GLX_DRAWABLE_ANY && type != (*drawable)->type)) {

+	client->errorValue = id;

+	switch (type) {

+	case GLX_DRAWABLE_WINDOW:

+	    *err = __glXError(GLXBadWindow);

+	    return FALSE;

+	case GLX_DRAWABLE_PIXMAP:

+	    *err = __glXError(GLXBadPixmap);

+	    return FALSE;

+	case GLX_DRAWABLE_PBUFFER:

+	    *err = __glXError(GLXBadPbuffer);

+	    return FALSE;

+	case GLX_DRAWABLE_ANY:

+	    *err = __glXError(GLXBadDrawable);

+	    return FALSE;

+	}

+    }

+

+    return TRUE;

+}

+

+void

+__glXContextDestroy(__GLXcontext *context)

+{

+    __glXFlushContextCache();

+}

+

+static void __glXdirectContextDestroy(__GLXcontext *context)

+{

+    __glXContextDestroy(context);

+    xfree(context);

+}

+

+static __GLXcontext *__glXdirectContextCreate(__GLXscreen *screen,

+					      __GLXconfig *modes,

+					      __GLXcontext *shareContext)

+{

+    __GLXcontext *context;

+

+    context = xcalloc (1, sizeof (__GLXcontext));

+    if (context == NULL)

+	return NULL;

+

+    context->destroy = __glXdirectContextDestroy;

+

+    return context;

+}

+

+/**

+ * Create a GL context with the given properties.  This routine is used

+ * to implement \c glXCreateContext, \c glXCreateNewContext, and

+ * \c glXCreateContextWithConfigSGIX.  This works becuase of the hack way

+ * that GLXFBConfigs are implemented.  Basically, the FBConfigID is the

+ * same as the VisualID.

+ */

+

+static int

+DoCreateContext(__GLXclientState *cl, GLXContextID gcId,

+		GLXContextID shareList, __GLXconfig *config,

+		__GLXscreen *pGlxScreen, GLboolean isDirect)

+{

+    ClientPtr client = cl->client;

+    __GLXcontext *glxc, *shareglxc;

+    int err;

+    

+    LEGAL_NEW_RESOURCE(gcId, client);

+

+    /*

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

+    **

+    ** NOTE: In a multithreaded X server, we would need to keep a reference

+    ** count for each display list so that if one client detroyed a list that 

+    ** another client was using, the list would not really be freed until it 

+    ** was no longer in use.  Since this sample implementation has no support 

+    ** for multithreaded servers, we don't do this.  

+    */

+    if (shareList == None) {

+	shareglxc = 0;

+    } else {

+	if (!validGlxContext(client, shareList, DixReadAccess,

+			     &shareglxc, &err))

+	    return err;

+

+	if (shareglxc->isDirect) {

+	    /*

+	    ** NOTE: no support for sharing display lists between direct

+	    ** contexts, even if they are in the same address space.

+	    */

+#if 0

+            /* Disabling this code seems to allow shared display lists

+             * and texture objects to work.  We'll leave it disabled for now.

+             */

+	    client->errorValue = shareList;

+	    return BadMatch;

+#endif

+	} else {

+	    /*

+	    ** Create an indirect context regardless of what the client asked

+	    ** for; this way we can share display list space with shareList.

+	    */

+	    isDirect = GL_FALSE;

+	}

+    }

+

+    /*

+    ** Allocate memory for the new context

+    */

+    if (!isDirect)

+	glxc = pGlxScreen->createContext(pGlxScreen, config, shareglxc);

+    else

+	glxc = __glXdirectContextCreate(pGlxScreen, config, shareglxc);

+    if (!glxc) {

+	return BadAlloc;

+    }

+

+    /*

+    ** Initially, setup the part of the context that could be used by

+    ** a GL core that needs windowing information (e.g., Mesa).

+    */

+    glxc->pGlxScreen = pGlxScreen;

+    glxc->config = config;

+

+    /*

+    ** Register this context as a resource.

+    */

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

+	(*glxc->destroy)(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;

+    glxc->isDirect = isDirect;

+    glxc->renderMode = GL_RENDER;

+

+    __glXAddToContextList(glxc);

+

+    return Success;

+}

+

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

+{

+    xGLXCreateContextReq *req = (xGLXCreateContextReq *) pc;

+    __GLXconfig *config;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err))

+	return err;

+

+    return DoCreateContext(cl, req->context, req->shareList,

+			   config, pGlxScreen, req->isDirect);

+}

+

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

+{

+    xGLXCreateNewContextReq *req = (xGLXCreateNewContextReq *) pc;

+    __GLXconfig *config;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))

+	return err;

+

+    return DoCreateContext(cl, req->context, req->shareList,

+			   config, pGlxScreen, req->isDirect);

+}

+

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

+{

+    xGLXCreateContextWithConfigSGIXReq *req = 

+	(xGLXCreateContextWithConfigSGIXReq *) pc;

+    __GLXconfig *config;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))

+	return err;

+

+    return DoCreateContext(cl, req->context, req->shareList,

+			   config, pGlxScreen, req->isDirect);

+}

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

+{

+    xGLXDestroyContextReq *req = (xGLXDestroyContextReq *) pc;

+    __GLXcontext *glxc;

+    int err;

+

+    if (!validGlxContext(cl->client, req->context, DixDestroyAccess,

+			 &glxc, &err))

+	    return err;

+

+    FreeResourceByType(req->context, __glXContextRes, FALSE);

+    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)

+{

+    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 **) xalloc(sizeof(__GLXcontext *));

+    } else {

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

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

+    }

+    table[num] = glxc;

+    cl->currentContexts = table;

+    cl->numCurrentContexts++;

+    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;

+}

+

+/*

+** 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];

+    }

+}

+

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

+

+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;

+    __glXLastContext = glxc;	

+}

+

+/**

+ * This is a helper function to handle the legacy (pre GLX 1.3) cases

+ * where passing an X window to glXMakeCurrent is valid.  Given a

+ * resource ID, look up the GLX drawable if available, otherwise, make

+ * sure it's an X window and create a GLX drawable one the fly.

+ */

+static __GLXdrawable *

+__glXGetDrawable(__GLXcontext *glxc, GLXDrawable drawId, ClientPtr client,

+		 int *error)

+{

+    DrawablePtr pDraw;

+    __GLXdrawable *pGlxDraw;

+    int rc;

+

+    if (validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY,

+			 DixWriteAccess, &pGlxDraw, &rc)) {

+	if (glxc != NULL && pGlxDraw->config != glxc->config) {

+	    client->errorValue = drawId;

+	    *error = BadMatch;

+	    return NULL;

+	}

+

+	return pGlxDraw;

+    }

+

+    /* The drawId wasn't a GLX drawable.  Make sure it's a window and

+     * create a GLXWindow for it.  Check that the drawable screen

+     * matches the context screen and that the context fbconfig is

+     * compatible with the window visual. */

+

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

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

+	client->errorValue = drawId;

+	*error = __glXError(GLXBadDrawable);

+	return NULL;

+    }

+

+    if (pDraw->pScreen != glxc->pGlxScreen->pScreen) {

+	client->errorValue = pDraw->pScreen->myNum;

+	*error = BadMatch;

+	return NULL;

+    }

+

+    if (!validGlxFBConfigForWindow(client, glxc->config, pDraw, error))

+	return NULL;

+

+    pGlxDraw = glxc->pGlxScreen->createDrawable(glxc->pGlxScreen,

+						pDraw, GLX_DRAWABLE_WINDOW,

+						drawId, glxc->config);

+

+    /* since we are creating the drawablePrivate, drawId should be new */

+    if (!AddResource(drawId, __glXDrawableRes, pGlxDraw)) {

+	pGlxDraw->destroy (pGlxDraw);

+	*error = BadAlloc;

+	return NULL;

+    }

+

+    return pGlxDraw;

+}

+

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

+/*

+** Make an OpenGL context and drawable current.

+*/

+

+static int

+DoMakeCurrent(__GLXclientState *cl,

+	      GLXDrawable drawId, GLXDrawable readId,

+	      GLXContextID contextId, GLXContextTag tag)

+{

+    ClientPtr client = cl->client;

+    xGLXMakeCurrentReply reply;

+    __GLXcontext *glxc, *prevglxc;

+    __GLXdrawable *drawPriv = NULL;

+    __GLXdrawable *readPriv = NULL;

+    int error;

+    GLuint  mask;

+

+    /*

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

+    */

+

+    mask  = (drawId == None)    ? (1 << 0) : 0;

+    mask |= (readId == None)    ? (1 << 1) : 0;

+    mask |= (contextId == None) ? (1 << 2) : 0;

+

+    if ( (mask != 0x00) && (mask != 0x07) ) {

+	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 __glXError(GLXBadContextTag);

+	}

+	if (prevglxc->renderMode != GL_RENDER) {

+	    /* Oops.  Not in render mode render. */

+	    client->errorValue = prevglxc->id;

+	    return __glXError(GLXBadContextState);

+	}

+    } else {

+	prevglxc = 0;

+    }

+

+    /*

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

+    */

+    if (contextId != None) {

+	int  status;

+

+	if (!validGlxContext(client, contextId, DixUseAccess, &glxc, &error))

+	    return error;

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

+	    /* Context is current to somebody else */

+	    return BadAccess;

+	}

+

+	assert( drawId != None );

+	assert( readId != None );

+

+	drawPriv = __glXGetDrawable(glxc, drawId, client, &status);

+	if (drawPriv == NULL)

+	    return status;

+

+	readPriv = __glXGetDrawable(glxc, readId, client, &status);

+	if (readPriv == NULL)

+	    return status;

+

+    } else {

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

+	glxc = 0;

+	drawPriv = 0;

+	readPriv = 0;

+    }

+

+

+    if (prevglxc) {

+	/*

+	** Flush the previous context if needed.

+	*/

+	if (__GLX_HAS_UNFLUSHED_CMDS(prevglxc)) {

+	    if (__glXForceCurrent(cl, tag, (int *)&error)) {

+		CALL_Flush( GET_DISPATCH(), () );

+		__GLX_NOTE_FLUSHED_CMDS(prevglxc);

+	    } else {

+		return error;

+	    }

+	}

+

+	/*

+	** Make the previous context not current.

+	*/

+	if (!(*prevglxc->loseCurrent)(prevglxc)) {

+	    return __glXError(GLXBadContext);

+	}

+	__glXFlushContextCache();

+	if (!prevglxc->isDirect) {

+	    prevglxc->drawPriv = NULL;

+	    prevglxc->readPriv = NULL;

+	}

+    }

+	

+

+    if ((glxc != 0) && !glxc->isDirect) {

+

+	glxc->drawPriv = drawPriv;

+	glxc->readPriv = readPriv;

+

+	/* make the context current */

+	if (!(*glxc->makeCurrent)(glxc)) {

+	    glxc->drawPriv = NULL;

+	    glxc->readPriv = NULL;

+	    return __glXError(GLXBadContext);

+	}

+

+	glxc->isCurrent = GL_TRUE;

+    }

+

+    if (prevglxc) {

+	ChangeCurrentContext(cl, glxc, tag);

+	StopUsingContext(prevglxc);

+    } else {

+	tag = AddCurrentContext(cl, glxc);

+    }

+

+    if (glxc) {

+	StartUsingContext(cl, glxc);

+	reply.contextTag = tag;

+    } else {

+	reply.contextTag = 0;

+    }

+

+    reply.length = 0;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+	__glXSwapMakeCurrentReply(client, &reply);

+    } else {

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

+    }

+    return Success;

+}

+

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

+{

+    xGLXMakeCurrentReq *req = (xGLXMakeCurrentReq *) pc;

+

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

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

+}

+

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

+{

+    xGLXMakeContextCurrentReq *req = (xGLXMakeContextCurrentReq *) pc;

+

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

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

+}

+

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

+{

+    xGLXMakeCurrentReadSGIReq *req = (xGLXMakeCurrentReadSGIReq *) pc;

+

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

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

+}

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXIsDirectReq *req = (xGLXIsDirectReq *) pc;

+    xGLXIsDirectReply reply;

+    __GLXcontext *glxc;

+    int err;

+

+    if (!validGlxContext(cl->client, req->context, DixReadAccess, &glxc, &err))

+	return err;

+

+    reply.isDirect = glxc->isDirect;

+    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 __glXDisp_QueryVersion(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXQueryVersionReq *req = (xGLXQueryVersionReq *) pc;

+    xGLXQueryVersionReply reply;

+    GLuint major, minor;

+

+    major = req->majorVersion;

+    minor = req->minorVersion;

+    (void)major;

+    (void)minor;

+

+    /*

+    ** 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 = SERVER_GLX_MAJOR_VERSION;

+    reply.minorVersion = SERVER_GLX_MINOR_VERSION;

+    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 __glXDisp_WaitGL(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXWaitGLReq *req = (xGLXWaitGLReq *)pc;

+    GLXContextTag tag = req->contextTag;

+    __GLXcontext *glxc = NULL;

+    int error;

+

+    if (tag) {

+	glxc = __glXLookupContextByTag(cl, tag);

+	if (!glxc)

+	    return __glXError(GLXBadContextTag);

+    

+	if (!__glXForceCurrent(cl, req->contextTag, &error))

+	    return error;

+

+	CALL_Finish( GET_DISPATCH(), () );

+    }

+

+    if (glxc && glxc->drawPriv->waitGL)

+	(*glxc->drawPriv->waitGL)(glxc->drawPriv);

+

+    return Success;

+}

+

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

+{

+    xGLXWaitXReq *req = (xGLXWaitXReq *)pc;

+    GLXContextTag tag = req->contextTag;

+    __GLXcontext *glxc = NULL;

+    int error;

+

+    if (tag) {

+	glxc = __glXLookupContextByTag(cl, tag);

+	if (!glxc)

+	    return __glXError(GLXBadContextTag);

+    

+	if (!__glXForceCurrent(cl, req->contextTag, &error))

+	    return error;

+    }

+

+    if (glxc && glxc->drawPriv->waitX)

+	(*glxc->drawPriv->waitX)(glxc->drawPriv);

+

+    return Success;

+}

+

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

+{

+    ClientPtr client = cl->client;

+    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 error;

+

+    if (!validGlxContext(cl->client, source, DixReadAccess, &src, &error))

+	return error;

+    if (!validGlxContext(cl->client, dest, DixWriteAccess, &dst, &error))

+	return error;

+

+    /*

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

+    ** NOTE: no support for direct rendering contexts here.

+    */

+    if (src->isDirect || dst->isDirect ||

+	(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 __glXError(GLXBadContextTag);

+	}

+	if (tagcx != src) {

+	    /*

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

+	    ** library.

+	    */

+	    return BadMatch;

+	}

+	/*

+	** In this case, glXCopyContext is in both GL and X streams, in terms

+	** of sequentiality.

+	*/

+	if (__glXForceCurrent(cl, tag, &error)) {

+	    /*

+	    ** Do whatever is needed to make sure that all preceding requests

+	    ** in both streams are completed before the copy is executed.

+	    */

+	    CALL_Finish( GET_DISPATCH(), () );

+	    __GLX_NOTE_FLUSHED_CMDS(tagcx);

+	} else {

+	    return error;

+	}

+    }

+    /*

+    ** Issue copy.  The only reason for failure is a bad mask.

+    */

+    if (!(*dst->copy)(dst, src, mask)) {

+	client->errorValue = mask;

+	return BadValue;

+    }

+    return Success;

+}

+

+enum {

+    GLX_VIS_CONFIG_UNPAIRED = 18,

+    GLX_VIS_CONFIG_PAIRED = 20

+};

+

+enum {

+    GLX_VIS_CONFIG_TOTAL = GLX_VIS_CONFIG_UNPAIRED + GLX_VIS_CONFIG_PAIRED

+};

+

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

+{

+    xGLXGetVisualConfigsReq *req = (xGLXGetVisualConfigsReq *) pc;

+    ClientPtr client = cl->client;

+    xGLXGetVisualConfigsReply reply;

+    __GLXscreen *pGlxScreen;

+    __GLXconfig *modes;

+    CARD32 buf[GLX_VIS_CONFIG_TOTAL];

+    int p, i, err;

+    __GLX_DECLARE_SWAP_VARIABLES;

+    __GLX_DECLARE_SWAP_ARRAY_VARIABLES;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+

+    reply.numVisuals = pGlxScreen->numVisuals;

+    reply.numProps = GLX_VIS_CONFIG_TOTAL;

+    reply.length = (reply.numVisuals * __GLX_SIZE_CARD32 * GLX_VIS_CONFIG_TOTAL) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+	__GLX_SWAP_SHORT(&reply.sequenceNumber);

+	__GLX_SWAP_INT(&reply.length);

+	__GLX_SWAP_INT(&reply.numVisuals);

+	__GLX_SWAP_INT(&reply.numProps);

+    }

+

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

+

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

+	modes = pGlxScreen->visuals[i];

+

+	p = 0;

+	buf[p++] = modes->visualID;

+	buf[p++] = glxConvertToXVisualType( modes->visualType );

+	buf[p++] = (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE;

+

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

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

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

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

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

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

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

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

+

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

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

+

+	buf[p++] = modes->rgbBits;

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

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

+	buf[p++] = modes->numAuxBuffers;

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

+

+	assert(p == GLX_VIS_CONFIG_UNPAIRED);

+	/* 

+	** Add token/value pairs for extensions.

+	*/

+	buf[p++] = GLX_VISUAL_CAVEAT_EXT;

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

+	buf[p++] = GLX_TRANSPARENT_TYPE;

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

+	buf[p++] = GLX_TRANSPARENT_RED_VALUE;

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

+	buf[p++] = GLX_TRANSPARENT_GREEN_VALUE;

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

+	buf[p++] = GLX_TRANSPARENT_BLUE_VALUE;

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

+	buf[p++] = GLX_TRANSPARENT_ALPHA_VALUE;

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

+	buf[p++] = GLX_TRANSPARENT_INDEX_VALUE;

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

+	buf[p++] = GLX_SAMPLES_SGIS;

+	buf[p++] = modes->samples;

+	buf[p++] = GLX_SAMPLE_BUFFERS_SGIS;

+	buf[p++] = modes->sampleBuffers;

+	buf[p++] = 0; /* copy over visualSelectGroup (GLX_VISUAL_SELECT_GROUP_SGIX)? */

+	buf[p++] = 0;

+

+	assert(p == GLX_VIS_CONFIG_TOTAL);

+	if (client->swapped) {

+	    __GLX_SWAP_INT_ARRAY(buf, p);

+	}

+	WriteToClient(client, __GLX_SIZE_CARD32 * p, (char *)buf);

+    }

+    return Success;

+}

+

+#define __GLX_TOTAL_FBCONFIG_ATTRIBS (36)

+#define __GLX_FBCONFIG_ATTRIBS_LENGTH (__GLX_TOTAL_FBCONFIG_ATTRIBS * 2)

+/**

+ * Send the set of GLXFBConfigs to the client.  There is not currently

+ * and interface into the driver on the server-side to get GLXFBConfigs,

+ * so we "invent" some based on the \c __GLXvisualConfig structures that

+ * the driver does supply.

+ * 

+ * The reply format for both \c glXGetFBConfigs and \c glXGetFBConfigsSGIX

+ * is the same, so this routine pulls double duty.

+ */

+

+static int

+DoGetFBConfigs(__GLXclientState *cl, unsigned screen)

+{

+    ClientPtr client = cl->client;

+    xGLXGetFBConfigsReply reply;

+    __GLXscreen *pGlxScreen;

+    CARD32 buf[__GLX_FBCONFIG_ATTRIBS_LENGTH];

+    int p, err;

+    __GLXconfig *modes;

+    __GLX_DECLARE_SWAP_VARIABLES;

+    __GLX_DECLARE_SWAP_ARRAY_VARIABLES;

+

+    if (!validGlxScreen(cl->client, screen, &pGlxScreen, &err))

+	return err;

+

+    reply.numFBConfigs = pGlxScreen->numFBConfigs;

+    reply.numAttribs = __GLX_TOTAL_FBCONFIG_ATTRIBS;

+    reply.length = (__GLX_FBCONFIG_ATTRIBS_LENGTH * reply.numFBConfigs);

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+	__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 (modes = pGlxScreen->fbconfigs; modes != NULL; modes = modes->next) {

+	p = 0;

+

+#define WRITE_PAIR(tag,value) \

+    do { buf[p++] = tag ; buf[p++] = value ; } while( 0 )

+

+	WRITE_PAIR( GLX_VISUAL_ID,        modes->visualID );

+	WRITE_PAIR( GLX_FBCONFIG_ID,      modes->fbconfigID );

+	WRITE_PAIR( GLX_X_RENDERABLE,     GL_TRUE );

+

+	WRITE_PAIR( GLX_RGBA,

+		    (modes->renderType & GLX_RGBA_BIT) ? GL_TRUE : GL_FALSE );

+	WRITE_PAIR( GLX_RENDER_TYPE,      modes->renderType );

+	WRITE_PAIR( GLX_DOUBLEBUFFER,     modes->doubleBufferMode );

+	WRITE_PAIR( GLX_STEREO,           modes->stereoMode );

+

+	WRITE_PAIR( GLX_BUFFER_SIZE,      modes->rgbBits );

+	WRITE_PAIR( GLX_LEVEL,            modes->level );

+	WRITE_PAIR( GLX_AUX_BUFFERS,      modes->numAuxBuffers );

+	WRITE_PAIR( GLX_RED_SIZE,         modes->redBits );

+	WRITE_PAIR( GLX_GREEN_SIZE,       modes->greenBits );

+	WRITE_PAIR( GLX_BLUE_SIZE,        modes->blueBits );

+	WRITE_PAIR( GLX_ALPHA_SIZE,       modes->alphaBits );

+	WRITE_PAIR( GLX_ACCUM_RED_SIZE,   modes->accumRedBits );

+	WRITE_PAIR( GLX_ACCUM_GREEN_SIZE, modes->accumGreenBits );

+	WRITE_PAIR( GLX_ACCUM_BLUE_SIZE,  modes->accumBlueBits );

+	WRITE_PAIR( GLX_ACCUM_ALPHA_SIZE, modes->accumAlphaBits );

+	WRITE_PAIR( GLX_DEPTH_SIZE,       modes->depthBits );

+	WRITE_PAIR( GLX_STENCIL_SIZE,     modes->stencilBits );

+	WRITE_PAIR( GLX_X_VISUAL_TYPE,    modes->visualType );

+	WRITE_PAIR( GLX_CONFIG_CAVEAT, modes->visualRating );

+	WRITE_PAIR( GLX_TRANSPARENT_TYPE, modes->transparentPixel );

+	WRITE_PAIR( GLX_TRANSPARENT_RED_VALUE, modes->transparentRed );

+	WRITE_PAIR( GLX_TRANSPARENT_GREEN_VALUE, modes->transparentGreen );

+	WRITE_PAIR( GLX_TRANSPARENT_BLUE_VALUE, modes->transparentBlue );

+	WRITE_PAIR( GLX_TRANSPARENT_ALPHA_VALUE, modes->transparentAlpha );

+	WRITE_PAIR( GLX_TRANSPARENT_INDEX_VALUE, modes->transparentIndex );

+	WRITE_PAIR( GLX_SWAP_METHOD_OML, modes->swapMethod );

+	WRITE_PAIR( GLX_SAMPLES_SGIS, modes->samples );

+	WRITE_PAIR( GLX_SAMPLE_BUFFERS_SGIS, modes->sampleBuffers );

+	/* GLX_VISUAL_SELECT_GROUP_SGIX ? */

+	WRITE_PAIR( GLX_DRAWABLE_TYPE, modes->drawableType );

+	WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGB_EXT, modes->bindToTextureRgb );

+	WRITE_PAIR( GLX_BIND_TO_TEXTURE_RGBA_EXT, modes->bindToTextureRgba );

+	WRITE_PAIR( GLX_BIND_TO_MIPMAP_TEXTURE_EXT, modes->bindToMipmapTexture );

+	WRITE_PAIR( GLX_BIND_TO_TEXTURE_TARGETS_EXT, modes->bindToTextureTargets );

+

+	if (client->swapped) {

+	    __GLX_SWAP_INT_ARRAY(buf, __GLX_FBCONFIG_ATTRIBS_LENGTH);

+	}

+	WriteToClient(client, __GLX_SIZE_CARD32 * __GLX_FBCONFIG_ATTRIBS_LENGTH,

+		      (char *)buf);

+    }

+    return Success;

+}

+

+

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

+{

+    xGLXGetFBConfigsReq *req = (xGLXGetFBConfigsReq *) pc;

+    return DoGetFBConfigs(cl, req->screen);

+}

+

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

+{

+    xGLXGetFBConfigsSGIXReq *req = (xGLXGetFBConfigsSGIXReq *) pc;

+    return DoGetFBConfigs(cl, req->screen);

+}

+

+GLboolean

+__glXDrawableInit(__GLXdrawable *drawable,

+		  __GLXscreen *screen, DrawablePtr pDraw, int type,

+		  XID drawId, __GLXconfig *config)

+{

+    drawable->pDraw = pDraw;

+    drawable->type = type;

+    drawable->drawId = drawId;

+    drawable->config = config;

+    drawable->eventMask = 0;

+

+    return GL_TRUE;

+}

+

+void

+__glXDrawableRelease(__GLXdrawable *drawable)

+{

+    ScreenPtr pScreen = drawable->pDraw->pScreen;

+

+    switch (drawable->type) {

+    case GLX_DRAWABLE_PIXMAP:

+    case GLX_DRAWABLE_PBUFFER:

+	(*pScreen->DestroyPixmap)((PixmapPtr) drawable->pDraw);

+	break;

+    }

+}

+

+static int 

+DoCreateGLXDrawable(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config,

+		    DrawablePtr pDraw, XID glxDrawableId, int type)

+{

+    __GLXdrawable *pGlxDraw;

+

+    LEGAL_NEW_RESOURCE(glxDrawableId, client);

+

+    if (pGlxScreen->pScreen != pDraw->pScreen)

+	return BadMatch;

+

+    pGlxDraw = pGlxScreen->createDrawable(pGlxScreen, pDraw, type,

+					  glxDrawableId, config);

+    if (pGlxDraw == NULL)

+	return BadAlloc;

+

+    if (!AddResource(glxDrawableId, __glXDrawableRes, pGlxDraw)) {

+	pGlxDraw->destroy (pGlxDraw);

+	return BadAlloc;

+    }

+

+    return Success;

+}

+

+static int

+DoCreateGLXPixmap(ClientPtr client, __GLXscreen *pGlxScreen, __GLXconfig *config,

+		  XID drawableId, XID glxDrawableId)

+{

+    DrawablePtr pDraw;

+    int err;

+

+    err = dixLookupDrawable(&pDraw, drawableId, client, 0, DixAddAccess);

+    if (err != Success) {

+	client->errorValue = drawableId;

+	return err;

+    }

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

+	client->errorValue = drawableId;

+	return BadPixmap;

+    }

+

+    err = DoCreateGLXDrawable(client, pGlxScreen, config, pDraw,

+			      glxDrawableId, GLX_DRAWABLE_PIXMAP);

+

+    if (err == Success)

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

+

+    return err;

+}

+

+static void

+determineTextureTarget(ClientPtr client, XID glxDrawableID,

+		       CARD32 *attribs, CARD32 numAttribs)

+{

+    GLenum target = 0;

+    GLenum format = 0;

+    int i, err;

+    __GLXdrawable *pGlxDraw;

+

+    if (!validGlxDrawable(client, glxDrawableID, GLX_DRAWABLE_PIXMAP,

+			  DixWriteAccess, &pGlxDraw, &err))

+	/* We just added it in CreatePixmap, so we should never get here. */

+	return;

+

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

+	if (attribs[2 * i] == GLX_TEXTURE_TARGET_EXT) {

+	    switch (attribs[2 * i + 1]) {

+	    case GLX_TEXTURE_2D_EXT:

+		target = GL_TEXTURE_2D;

+		break;

+	    case GLX_TEXTURE_RECTANGLE_EXT:

+		target = GL_TEXTURE_RECTANGLE_ARB;

+		break;

+	    }

+	}

+

+	if (attribs[2 * i] == GLX_TEXTURE_FORMAT_EXT)

+		format = attribs[2 * i + 1];

+    }

+ 

+    if (!target) {

+	int w = pGlxDraw->pDraw->width, h = pGlxDraw->pDraw->height;

+	

+	if (h & (h - 1) || w & (w - 1))

+	    target = GL_TEXTURE_RECTANGLE_ARB;

+	else

+	    target = GL_TEXTURE_2D;

+    }

+

+    pGlxDraw->target = target;

+    pGlxDraw->format = format;

+}

+

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

+{

+    xGLXCreateGLXPixmapReq *req = (xGLXCreateGLXPixmapReq *) pc;

+    __GLXconfig *config;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxVisual(cl->client, pGlxScreen, req->visual, &config, &err))

+	return err;

+

+    return DoCreateGLXPixmap(cl->client, pGlxScreen, config,

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

+}

+

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

+{

+    xGLXCreatePixmapReq *req = (xGLXCreatePixmapReq *) pc;

+    __GLXconfig *config;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))

+	return err;

+

+    err = DoCreateGLXPixmap(cl->client, pGlxScreen, config,

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

+    if (err != Success)

+	return err;

+

+    determineTextureTarget(cl->client, req->glxpixmap,

+			   (CARD32*) (req + 1), req->numAttribs);

+

+    return Success;

+}

+

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

+{

+    xGLXCreateGLXPixmapWithConfigSGIXReq *req = 

+	(xGLXCreateGLXPixmapWithConfigSGIXReq *) pc;

+    __GLXconfig *config;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(cl->client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxFBConfig(cl->client, pGlxScreen, req->fbconfig, &config, &err))

+	return err;

+

+    return DoCreateGLXPixmap(cl->client, pGlxScreen,

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

+}

+

+

+static int DoDestroyDrawable(__GLXclientState *cl, XID glxdrawable, int type)

+{

+    __GLXdrawable *pGlxDraw;

+    int err;

+

+    if (!validGlxDrawable(cl->client, glxdrawable, type,

+			  DixDestroyAccess, &pGlxDraw, &err))

+	return err;

+

+    FreeResource(glxdrawable, FALSE);

+

+    return Success;

+}

+

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

+{

+    xGLXDestroyGLXPixmapReq *req = (xGLXDestroyGLXPixmapReq *) pc;

+

+    return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);

+}

+

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

+{

+    xGLXDestroyPixmapReq *req = (xGLXDestroyPixmapReq *) pc;

+

+    return DoDestroyDrawable(cl, req->glxpixmap, GLX_DRAWABLE_PIXMAP);

+}

+

+static int

+DoCreatePbuffer(ClientPtr client, int screenNum, XID fbconfigId,

+		int width, int height, XID glxDrawableId)

+{

+    __GLXconfig	*config;

+    __GLXscreen		*pGlxScreen;

+    PixmapPtr		 pPixmap;

+    int			 err;

+

+    if (!validGlxScreen(client, screenNum, &pGlxScreen, &err))

+	return err;

+    if (!validGlxFBConfig(client, pGlxScreen, fbconfigId, &config, &err))

+	return err;

+

+    __glXenterServer(GL_FALSE);

+    pPixmap = (*pGlxScreen->pScreen->CreatePixmap) (pGlxScreen->pScreen,

+						    width, height, config->rgbBits, 0);

+    __glXleaveServer(GL_FALSE);

+

+    return DoCreateGLXDrawable(client, pGlxScreen, config, &pPixmap->drawable,

+			       glxDrawableId, GLX_DRAWABLE_PBUFFER);

+}

+

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

+{

+    xGLXCreatePbufferReq	*req = (xGLXCreatePbufferReq *) pc;

+    CARD32			*attrs;

+    int				 width, height, i;

+

+    attrs = (CARD32 *) (req + 1);

+    width = 0;

+    height = 0;

+

+    for (i = 0; i < req->numAttribs; i++) {

+	switch (attrs[i * 2]) {

+	case GLX_PBUFFER_WIDTH:

+	    width = attrs[i * 2 + 1];

+	    break;

+	case GLX_PBUFFER_HEIGHT:

+	    height = attrs[i * 2 + 1];

+	    break;

+	case GLX_LARGEST_PBUFFER:

+	case GLX_PRESERVED_CONTENTS:

+	    /* FIXME: huh... */

+	    break;

+	}

+    }

+

+    return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,

+			   width, height, req->pbuffer);

+}

+

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

+{

+    xGLXCreateGLXPbufferSGIXReq *req = (xGLXCreateGLXPbufferSGIXReq *) pc;

+

+    return DoCreatePbuffer(cl->client, req->screen, req->fbconfig,

+			   req->width, req->height, req->pbuffer);

+}

+

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

+{

+    xGLXDestroyPbufferReq *req = (xGLXDestroyPbufferReq *) pc;

+

+    return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);

+}

+

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

+{

+    xGLXDestroyGLXPbufferSGIXReq *req = (xGLXDestroyGLXPbufferSGIXReq *) pc;

+

+    return DoDestroyDrawable(cl, req->pbuffer, GLX_DRAWABLE_PBUFFER);

+}

+

+static int

+DoChangeDrawableAttributes(ClientPtr client, XID glxdrawable,

+			   int numAttribs, CARD32 *attribs)

+{

+    __GLXdrawable *pGlxDraw;

+    int i, err;

+

+    if (!validGlxDrawable(client, glxdrawable, GLX_DRAWABLE_ANY,

+			  DixSetAttrAccess, &pGlxDraw, &err))

+	return err;

+

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

+	switch(attribs[i * 2]) {

+	case GLX_EVENT_MASK:

+	    /* All we do is to record the event mask so we can send it

+	     * back when queried.  We never actually clobber the

+	     * pbuffers, so we never need to send out the event. */

+	    pGlxDraw->eventMask = attribs[i * 2 + 1];

+	    break;

+	}

+    }

+

+    return Success;

+}

+

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

+{

+    xGLXChangeDrawableAttributesReq *req =

+	(xGLXChangeDrawableAttributesReq *) pc;

+

+    return DoChangeDrawableAttributes(cl->client, req->drawable,

+				      req->numAttribs, (CARD32 *) (req + 1));

+}

+

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

+{

+    xGLXChangeDrawableAttributesSGIXReq *req =

+	(xGLXChangeDrawableAttributesSGIXReq *)pc;

+

+    return DoChangeDrawableAttributes(cl->client, req->drawable,

+				      req->numAttribs, (CARD32 *) (req + 1));

+}

+

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

+{

+    xGLXCreateWindowReq	*req = (xGLXCreateWindowReq *) pc;

+    __GLXconfig	*config;

+    __GLXscreen		*pGlxScreen;

+    ClientPtr		 client = cl->client;

+    DrawablePtr		 pDraw;

+    int			 err;

+

+    if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))

+	return err;

+    if (!validGlxFBConfig(client, pGlxScreen, req->fbconfig, &config, &err))

+	return err;

+

+    err = dixLookupDrawable(&pDraw, req->window, client, 0, DixAddAccess);

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

+	client->errorValue = req->window;

+	return BadWindow;

+    }

+

+    if (!validGlxFBConfigForWindow(client, config, pDraw, &err))

+	return err;

+

+    return DoCreateGLXDrawable(client, pGlxScreen, config,

+			       pDraw, req->glxwindow, GLX_DRAWABLE_WINDOW);

+}

+

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

+{

+    xGLXDestroyWindowReq *req = (xGLXDestroyWindowReq *) pc;

+

+    return DoDestroyDrawable(cl, req->glxwindow, GLX_DRAWABLE_WINDOW);

+}

+

+

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

+

+/*

+** 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 __glXDisp_SwapBuffers(__GLXclientState *cl, GLbyte *pc)

+{

+    ClientPtr client = cl->client;

+    xGLXSwapBuffersReq *req = (xGLXSwapBuffersReq *) pc;

+    GLXContextTag tag = req->contextTag;

+    XID drawId = req->drawable;

+    __GLXcontext *glxc = NULL;

+    __GLXdrawable *pGlxDraw;

+    int error;

+

+    if (tag) {

+	glxc = __glXLookupContextByTag(cl, tag);

+	if (!glxc) {

+	    return __glXError(GLXBadContextTag);

+	}

+	/*

+	** The calling thread is swapping its current drawable.  In this case,

+	** glxSwapBuffers is in both GL and X streams, in terms of

+	** sequentiality.

+	*/

+	if (__glXForceCurrent(cl, tag, &error)) {

+	    /*

+	    ** Do whatever is needed to make sure that all preceding requests

+	    ** in both streams are completed before the swap is executed.

+	    */

+	    CALL_Finish( GET_DISPATCH(), () );

+	    __GLX_NOTE_FLUSHED_CMDS(glxc);

+	} else {

+	    return error;

+	}

+    }

+

+    pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);

+    if (pGlxDraw == NULL)

+	return error;

+

+    if (pGlxDraw->type == DRAWABLE_WINDOW &&

+	(*pGlxDraw->swapBuffers)(pGlxDraw) == GL_FALSE)

+	return __glXError(GLXBadDrawable);

+

+    return Success;

+}

+

+

+static int

+DoQueryContext(__GLXclientState *cl, GLXContextID gcId)

+{

+    ClientPtr client = cl->client;

+    __GLXcontext *ctx;

+    xGLXQueryContextInfoEXTReply reply;

+    int nProps;

+    int *sendBuf, *pSendBuf;

+    int nReplyBytes;

+    int err;

+

+    if (!validGlxContext(cl->client, gcId, DixReadAccess, &ctx, &err))

+	return err;

+

+    nProps = 3;

+    reply.length = nProps << 1;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.n = nProps;

+

+    nReplyBytes = reply.length << 2;

+    sendBuf = (int *)xalloc((size_t)nReplyBytes);

+    if (sendBuf == NULL) {

+	return __glXError(GLXBadContext);	/* XXX: Is this correct? */

+    }

+    pSendBuf = sendBuf;

+    *pSendBuf++ = GLX_SHARE_CONTEXT_EXT;

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

+    *pSendBuf++ = GLX_VISUAL_ID_EXT;

+    *pSendBuf++ = (int)(ctx->config->visualID);

+    *pSendBuf++ = GLX_SCREEN_EXT;

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

+

+    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 __glXDisp_QueryContextInfoEXT(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXQueryContextInfoEXTReq *req = (xGLXQueryContextInfoEXTReq *) pc;

+

+    return DoQueryContext(cl, req->context);

+}

+

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

+{

+    xGLXQueryContextReq *req = (xGLXQueryContextReq *) pc;

+

+    return DoQueryContext(cl, req->context);

+}

+

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

+{

+    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;

+    ClientPtr		 client = cl->client;

+    __GLXcontext	*context;

+    __GLXdrawable	*pGlxDraw;

+    GLXDrawable		 drawId;

+    int			 buffer;

+    int			 error;

+

+    pc += __GLX_VENDPRIV_HDR_SIZE;

+

+    drawId = *((CARD32 *) (pc));

+    buffer = *((INT32 *)  (pc + 4));

+

+    if (buffer != GLX_FRONT_LEFT_EXT)

+	return __glXError(GLXBadPixmap);

+

+    context = __glXForceCurrent (cl, req->contextTag, &error);

+    if (!context)

+	return error;

+

+    if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP,

+			  DixReadAccess, &pGlxDraw, &error))

+	return error;

+

+    if (!context->textureFromPixmap)

+	return __glXError(GLXUnsupportedPrivateRequest);

+

+    return context->textureFromPixmap->bindTexImage(context,

+						    buffer,

+						    pGlxDraw);

+}

+

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

+{

+    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;

+    ClientPtr		 client = cl->client;

+    __GLXdrawable	*pGlxDraw;

+    __GLXcontext	*context;

+    GLXDrawable		 drawId;

+    int			 buffer;

+    int			 error;

+

+    pc += __GLX_VENDPRIV_HDR_SIZE;

+

+    drawId = *((CARD32 *) (pc));

+    buffer = *((INT32 *)  (pc + 4));

+    

+    context = __glXForceCurrent (cl, req->contextTag, &error);

+    if (!context)

+	return error;

+

+    if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_PIXMAP,

+			  DixReadAccess, &pGlxDraw, &error))

+	return error;

+

+    if (!context->textureFromPixmap)

+	return __glXError(GLXUnsupportedPrivateRequest);

+

+    return context->textureFromPixmap->releaseTexImage(context,

+						       buffer,

+						       pGlxDraw);

+}

+

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

+{

+    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;

+    GLXContextTag         tag = req->contextTag;

+    __GLXcontext         *glxc = NULL;

+    __GLXdrawable        *pGlxDraw;

+    ClientPtr		  client = cl->client;

+    GLXDrawable		  drawId;

+    int                   error;

+    int                   x, y, width, height;

+

+    (void) client;

+    (void) req;

+

+    pc += __GLX_VENDPRIV_HDR_SIZE;

+

+    drawId = *((CARD32 *) (pc));

+    x      = *((INT32 *)  (pc + 4));

+    y      = *((INT32 *)  (pc + 8));

+    width  = *((INT32 *)  (pc + 12));

+    height = *((INT32 *)  (pc + 16));

+

+    if (tag) {

+	glxc = __glXLookupContextByTag(cl, tag);

+	if (!glxc) {

+	    return __glXError(GLXBadContextTag);

+	}

+	/*

+	** The calling thread is swapping its current drawable.  In this case,

+	** glxSwapBuffers is in both GL and X streams, in terms of

+	** sequentiality.

+	*/

+	if (__glXForceCurrent(cl, tag, &error)) {

+	    /*

+	    ** Do whatever is needed to make sure that all preceding requests

+	    ** in both streams are completed before the swap is executed.

+	    */

+	    CALL_Finish( GET_DISPATCH(), () );

+	    __GLX_NOTE_FLUSHED_CMDS(glxc);

+	} else {

+	    return error;

+	}

+    }

+

+    pGlxDraw = __glXGetDrawable(glxc, drawId, client, &error);

+    if (!pGlxDraw)

+	return error;

+

+    if (pGlxDraw == NULL ||

+	pGlxDraw->type != GLX_DRAWABLE_WINDOW ||

+	pGlxDraw->copySubBuffer == NULL)

+	return __glXError(GLXBadDrawable);

+

+    (*pGlxDraw->copySubBuffer)(pGlxDraw, x, y, width, height);

+

+    return Success;

+}

+

+/*

+** Get drawable attributes

+*/

+static int

+DoGetDrawableAttributes(__GLXclientState *cl, XID drawId)

+{

+    ClientPtr client = cl->client;

+    xGLXGetDrawableAttributesReply reply;

+    __GLXdrawable *pGlxDraw;

+    CARD32 attributes[6];

+    int numAttribs, error;

+

+    if (!validGlxDrawable(client, drawId, GLX_DRAWABLE_ANY,

+			  DixGetAttrAccess, &pGlxDraw, &error))

+	return error;

+

+    numAttribs = 3;

+    reply.length = numAttribs << 1;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.numAttribs = numAttribs;

+

+    attributes[0] = GLX_TEXTURE_TARGET_EXT;

+    attributes[1] = pGlxDraw->target == GL_TEXTURE_2D ? GLX_TEXTURE_2D_EXT :

+	GLX_TEXTURE_RECTANGLE_EXT;

+    attributes[2] = GLX_Y_INVERTED_EXT;

+    attributes[3] = GL_FALSE;

+    attributes[4] = GLX_EVENT_MASK;

+    attributes[5] = pGlxDraw->eventMask;

+

+    if (client->swapped) {

+	__glXSwapGetDrawableAttributesReply(client, &reply, attributes);

+    } else {

+	WriteToClient(client, sz_xGLXGetDrawableAttributesReply,

+		      (char *)&reply);

+	WriteToClient(client, reply.length * sizeof (CARD32),

+		      (char *)attributes);

+    }

+

+    return Success;

+}

+

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

+{

+    xGLXGetDrawableAttributesReq *req = (xGLXGetDrawableAttributesReq *)pc;

+

+    return DoGetDrawableAttributes(cl, req->drawable);

+}

+

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

+{

+    xGLXGetDrawableAttributesSGIXReq *req =

+	(xGLXGetDrawableAttributesSGIXReq *)pc;

+    

+    return DoGetDrawableAttributes(cl, req->drawable);

+}

+

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

+

+/*

+** 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 __glXDisp_Render(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXRenderReq *req;

+    ClientPtr client= cl->client;

+    int left, cmdlen, error;

+    int commandsDone;

+    CARD16 opcode;

+    __GLXrenderHeader *hdr;

+    __GLXcontext *glxc;

+    __GLX_DECLARE_SWAP_VARIABLES;

+

+    req = (xGLXRenderReq *) pc;

+    if (client->swapped) {

+	__GLX_SWAP_SHORT(&req->length);

+	__GLX_SWAP_INT(&req->contextTag);

+    }

+

+    glxc = __glXForceCurrent(cl, req->contextTag, &error);

+    if (!glxc) {

+	return error;

+    }

+

+    commandsDone = 0;

+    pc += sz_xGLXRenderReq;

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

+    while (left > 0) {

+        __GLXrenderSizeData entry;

+        int extra;

+	__GLXdispatchRenderProcPtr proc;

+	int err;

+

+	/*

+	** Verify that the header length and the overall length agree.

+	** Also, each command must be word aligned.

+	*/

+	hdr = (__GLXrenderHeader *) pc;

+	if (client->swapped) {

+	    __GLX_SWAP_SHORT(&hdr->length);

+	    __GLX_SWAP_SHORT(&hdr->opcode);

+	}

+	cmdlen = hdr->length;

+	opcode = hdr->opcode;

+

+	/*

+	** Check for core opcodes and grab entry data.

+	*/

+	err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);

+	proc = (__GLXdispatchRenderProcPtr)

+	    __glXGetProtocolDecodeFunction(& Render_dispatch_info,

+					   opcode, client->swapped);

+

+	if ((err < 0) || (proc == NULL)) {

+	    client->errorValue = commandsDone;

+	    return __glXError(GLXBadRenderRequest);

+	}

+

+        if (entry.varsize) {

+            /* variable size command */

+            extra = (*entry.varsize)(pc + __GLX_RENDER_HDR_SIZE,

+				     client->swapped);

+            if (extra < 0) {

+                extra = 0;

+            }

+            if (cmdlen != __GLX_PAD(entry.bytes + extra)) {

+                return BadLength;

+            }

+        } else {

+            /* constant size command */

+            if (cmdlen != __GLX_PAD(entry.bytes)) {

+                return BadLength;

+            }

+        }

+	if (left < cmdlen) {

+	    return BadLength;

+	}

+

+	/*

+	** Skip over the header and execute the command.  We allow the

+	** caller to trash the command memory.  This is useful especially

+	** for things that require double alignment - they can just shift

+	** the data towards lower memory (trashing the header) by 4 bytes

+	** and achieve the required alignment.

+	*/

+	(*proc)(pc + __GLX_RENDER_HDR_SIZE);

+	pc += cmdlen;

+	left -= cmdlen;

+	commandsDone++;

+    }

+    __GLX_NOTE_UNFLUSHED_CMDS(glxc);

+    return Success;

+}

+

+

+/*

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

+*/

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

+{

+    xGLXRenderLargeReq *req;

+    ClientPtr client= cl->client;

+    size_t dataBytes;

+    __GLXrenderLargeHeader *hdr;

+    __GLXcontext *glxc;

+    int error;

+    CARD16 opcode;

+    __GLX_DECLARE_SWAP_VARIABLES;

+    

+    req = (xGLXRenderLargeReq *) pc;

+    if (client->swapped) {

+	__GLX_SWAP_SHORT(&req->length);

+	__GLX_SWAP_INT(&req->contextTag);

+	__GLX_SWAP_INT(&req->dataBytes);

+	__GLX_SWAP_SHORT(&req->requestNumber);

+	__GLX_SWAP_SHORT(&req->requestTotal);

+    }

+

+    glxc = __glXForceCurrent(cl, req->contextTag, &error);

+    if (!glxc) {

+	/* Reset in case this isn't 1st request. */

+	__glXResetLargeCommandStatus(cl);

+	return error;

+    }

+    dataBytes = req->dataBytes;

+

+    /*

+    ** Check the request length.

+    */

+    if ((req->length << 2) != __GLX_PAD(dataBytes) + sz_xGLXRenderLargeReq) {

+	client->errorValue = req->length;

+	/* Reset in case this isn't 1st request. */

+	__glXResetLargeCommandStatus(cl);

+	return BadLength;

+    }

+    pc += sz_xGLXRenderLargeReq;

+    

+    if (cl->largeCmdRequestsSoFar == 0) {

+	__GLXrenderSizeData entry;

+	int extra;

+	size_t cmdlen;

+	int err;

+

+	/*

+	** This is the first request of a multi request command.

+	** Make enough space in the buffer, then copy the entire request.

+	*/

+	if (req->requestNumber != 1) {

+	    client->errorValue = req->requestNumber;

+	    return __glXError(GLXBadLargeRequest);

+	}

+

+	hdr = (__GLXrenderLargeHeader *) pc;

+	if (client->swapped) {

+	    __GLX_SWAP_INT(&hdr->length);

+	    __GLX_SWAP_INT(&hdr->opcode);

+	}

+	cmdlen = hdr->length;

+	opcode = hdr->opcode;

+

+	/*

+	** Check for core opcodes and grab entry data.

+	*/

+	err = __glXGetProtocolSizeData(& Render_dispatch_info, opcode, & entry);

+	if (err < 0) {

+	    client->errorValue = opcode;

+	    return __glXError(GLXBadLargeRequest);

+	}

+

+	if (entry.varsize) {

+	    /*

+	    ** If it's a variable-size command (a command whose length must

+	    ** be computed from its parameters), all the parameters needed

+	    ** will be in the 1st request, so it's okay to do this.

+	    */

+	    extra = (*entry.varsize)(pc + __GLX_RENDER_LARGE_HDR_SIZE,

+				     client->swapped);

+	    if (extra < 0) {

+		extra = 0;

+	    }

+	    /* large command's header is 4 bytes longer, so add 4 */

+	    if (cmdlen != __GLX_PAD(entry.bytes + 4 + extra)) {

+		return BadLength;

+	    }

+	} else {

+	    /* constant size command */

+	    if (cmdlen != __GLX_PAD(entry.bytes + 4)) {

+		return BadLength;

+	    }

+	}

+	/*

+	** Make enough space in the buffer, then copy the entire request.

+	*/

+	if (cl->largeCmdBufSize < cmdlen) {

+	    if (!cl->largeCmdBuf) {

+		cl->largeCmdBuf = (GLbyte *) xalloc(cmdlen);

+	    } else {

+		cl->largeCmdBuf = (GLbyte *) xrealloc(cl->largeCmdBuf, cmdlen);

+	    }

+	    if (!cl->largeCmdBuf) {

+		return BadAlloc;

+	    }

+	    cl->largeCmdBufSize = cmdlen;

+	}

+	memcpy(cl->largeCmdBuf, pc, dataBytes);

+

+	cl->largeCmdBytesSoFar = dataBytes;

+	cl->largeCmdBytesTotal = cmdlen;

+	cl->largeCmdRequestsSoFar = 1;

+	cl->largeCmdRequestsTotal = req->requestTotal;

+	return Success;

+	

+    } else {

+	/*

+	** We are receiving subsequent (i.e. not the first) requests of a

+	** multi request command.

+	*/

+

+	/*

+	** Check the request number and the total request count.

+	*/

+	if (req->requestNumber != cl->largeCmdRequestsSoFar + 1) {

+	    client->errorValue = req->requestNumber;

+	    __glXResetLargeCommandStatus(cl);

+	    return __glXError(GLXBadLargeRequest);

+	}

+	if (req->requestTotal != cl->largeCmdRequestsTotal) {

+	    client->errorValue = req->requestTotal;

+	    __glXResetLargeCommandStatus(cl);

+	    return __glXError(GLXBadLargeRequest);

+	}

+

+	/*

+	** Check that we didn't get too much data.

+	*/

+	if ((cl->largeCmdBytesSoFar + dataBytes) > cl->largeCmdBytesTotal) {

+	    client->errorValue = dataBytes;

+	    __glXResetLargeCommandStatus(cl);

+	    return __glXError(GLXBadLargeRequest);

+	}

+	memcpy(cl->largeCmdBuf + cl->largeCmdBytesSoFar, pc, dataBytes);

+	cl->largeCmdBytesSoFar += dataBytes;

+	cl->largeCmdRequestsSoFar++;

+

+	if (req->requestNumber == cl->largeCmdRequestsTotal) {

+	    __GLXdispatchRenderProcPtr proc;

+

+	    /*

+	    ** This is the last request; it must have enough bytes to complete

+	    ** the command.

+	    */

+	    /* NOTE: the two pad macros have been added below; they are needed

+	    ** because the client library pads the total byte count, but not

+	    ** the per-request byte counts.  The Protocol Encoding says the

+	    ** total byte count should not be padded, so a proposal will be 

+	    ** made to the ARB to relax the padding constraint on the total 

+	    ** byte count, thus preserving backward compatibility.  Meanwhile, 

+	    ** the padding done below fixes a bug that did not allow

+	    ** large commands of odd sizes to be accepted by the server.

+	    */

+	    if (__GLX_PAD(cl->largeCmdBytesSoFar) !=

+		__GLX_PAD(cl->largeCmdBytesTotal)) {

+		client->errorValue = dataBytes;

+		__glXResetLargeCommandStatus(cl);

+		return __glXError(GLXBadLargeRequest);

+	    }

+	    hdr = (__GLXrenderLargeHeader *) cl->largeCmdBuf;

+	    /*

+	    ** The opcode and length field in the header had already been

+	    ** swapped when the first request was received.

+	    **

+	    ** Use the opcode to index into the procedure table.

+	    */

+	    opcode = hdr->opcode;

+

+	    proc = (__GLXdispatchRenderProcPtr)

+	      __glXGetProtocolDecodeFunction(& Render_dispatch_info, opcode,

+					     client->swapped);

+	    if (proc == NULL) {

+		client->errorValue = opcode;

+		return __glXError(GLXBadLargeRequest);

+	    }

+

+	    /*

+	    ** Skip over the header and execute the command.

+	    */

+	    (*proc)(cl->largeCmdBuf + __GLX_RENDER_LARGE_HDR_SIZE);

+	    __GLX_NOTE_UNFLUSHED_CMDS(glxc);

+

+	    /*

+	    ** Reset for the next RenderLarge series.

+	    */

+	    __glXResetLargeCommandStatus(cl);

+	} else {

+	    /*

+	    ** This is neither the first nor the last request.

+	    */

+	}

+	return Success;

+    }

+}

+

+extern RESTYPE __glXSwapBarrierRes;

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXBindSwapBarrierSGIXReq *req = (xGLXBindSwapBarrierSGIXReq *) pc;

+    XID drawable = req->drawable;

+    int barrier = req->barrier;

+    DrawablePtr pDraw;

+    int screen, rc;

+    __GLXscreen *pGlxScreen;

+

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

+    pGlxScreen = glxGetScreen(pDraw->pScreen);

+    if (rc == Success && (pDraw->type == DRAWABLE_WINDOW)) {

+	screen = pDraw->pScreen->myNum;

+        if (pGlxScreen->swapBarrierFuncs) {

+            int ret = pGlxScreen->swapBarrierFuncs->bindSwapBarrierFunc(screen, drawable, barrier);

+            if (ret == Success) {

+                if (barrier)

+                    /* add source for cleanup when drawable is gone */

+                    AddResource(drawable, __glXSwapBarrierRes, (pointer)screen);

+                else

+                    /* delete source */

+                    FreeResourceByType(drawable, __glXSwapBarrierRes, FALSE);

+            }

+            return ret;

+        }

+    }

+    client->errorValue = drawable;

+    return __glXError(GLXBadDrawable);

+}

+

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXQueryMaxSwapBarriersSGIXReq *req =

+                                    (xGLXQueryMaxSwapBarriersSGIXReq *) pc;

+    xGLXQueryMaxSwapBarriersSGIXReply reply;

+    int screen = req->screen;

+    __GLXscreen *pGlxScreen;

+

+    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+    if (pGlxScreen->swapBarrierFuncs)

+        reply.max = pGlxScreen->swapBarrierFuncs->queryMaxSwapBarriersFunc(screen);

+    else

+        reply.max = 0;

+

+

+    reply.length = 0;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+

+    if (client->swapped) {

+        __GLX_DECLARE_SWAP_VARIABLES;

+        __GLX_SWAP_SHORT(&reply.sequenceNumber);

+    }

+

+    WriteToClient(client, sz_xGLXQueryMaxSwapBarriersSGIXReply,

+                        (char *) &reply);

+    return Success;

+}

+

+#define GLX_BAD_HYPERPIPE_SGIX 92

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXQueryHyperpipeNetworkSGIXReq * req = (xGLXQueryHyperpipeNetworkSGIXReq *) pc;

+    xGLXQueryHyperpipeNetworkSGIXReply reply;

+    int screen = req->screen;

+    void *rdata = NULL;

+

+    int length=0;

+    int npipes=0;

+

+    int n= 0;

+    __GLXscreen *pGlxScreen;

+

+    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+    if (pGlxScreen->hyperpipeFuncs) {

+        rdata =

+            (pGlxScreen->hyperpipeFuncs->queryHyperpipeNetworkFunc(screen, &npipes, &n));

+    }

+    length = __GLX_PAD(n) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = length;

+    reply.n = n;

+    reply.npipes = npipes;

+

+    if (client->swapped) {

+        __GLX_DECLARE_SWAP_VARIABLES;

+        __GLX_SWAP_SHORT(&reply.sequenceNumber);

+        __GLX_SWAP_INT(&reply.length);

+        __GLX_SWAP_INT(&reply.n);

+        __GLX_SWAP_INT(&reply.npipes);

+    }

+    WriteToClient(client, sz_xGLXQueryHyperpipeNetworkSGIXReply,

+                  (char *) &reply);

+

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

+

+    return Success;

+}

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXDestroyHyperpipeConfigSGIXReq * req =

+        (xGLXDestroyHyperpipeConfigSGIXReq *) pc;

+    xGLXDestroyHyperpipeConfigSGIXReply reply;

+    int screen = req->screen;

+    int  success = GLX_BAD_HYPERPIPE_SGIX;

+    int hpId ;

+    __GLXscreen *pGlxScreen;

+

+    hpId = req->hpId;

+

+    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+    if (pGlxScreen->hyperpipeFuncs) {

+        success = pGlxScreen->hyperpipeFuncs->destroyHyperpipeConfigFunc(screen, hpId);

+    }

+

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = __GLX_PAD(0) >> 2;

+    reply.n = 0;

+    reply.success = success;

+

+

+    if (client->swapped) {

+        __GLX_DECLARE_SWAP_VARIABLES;

+        __GLX_SWAP_SHORT(&reply.sequenceNumber);

+    }

+    WriteToClient(client,

+                  sz_xGLXDestroyHyperpipeConfigSGIXReply,

+                  (char *) &reply);

+    return Success;

+}

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXQueryHyperpipeConfigSGIXReq * req =

+        (xGLXQueryHyperpipeConfigSGIXReq *) pc;

+    xGLXQueryHyperpipeConfigSGIXReply reply;

+    int screen = req->screen;

+    void *rdata = NULL;

+    int length;

+    int npipes=0;

+    int n= 0;

+    int hpId;

+    __GLXscreen *pGlxScreen;

+

+    hpId = req->hpId;

+

+    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+    if (pGlxScreen->hyperpipeFuncs) {

+        rdata = pGlxScreen->hyperpipeFuncs->queryHyperpipeConfigFunc(screen, hpId,&npipes, &n);

+    }

+

+    length = __GLX_PAD(n) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = length;

+    reply.n = n;

+    reply.npipes = npipes;

+

+

+    if (client->swapped) {

+        __GLX_DECLARE_SWAP_VARIABLES;

+        __GLX_SWAP_SHORT(&reply.sequenceNumber);

+        __GLX_SWAP_INT(&reply.length);

+        __GLX_SWAP_INT(&reply.n);

+        __GLX_SWAP_INT(&reply.npipes);

+    }

+

+    WriteToClient(client, sz_xGLXQueryHyperpipeConfigSGIXReply,

+                  (char *) &reply);

+

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

+

+    return Success;

+}

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXHyperpipeConfigSGIXReq * req =

+        (xGLXHyperpipeConfigSGIXReq *) pc;

+    xGLXHyperpipeConfigSGIXReply reply;

+    int screen = req->screen;

+    void *rdata;

+

+    int npipes=0, networkId;

+    int hpId=-1;

+    __GLXscreen *pGlxScreen;

+

+    pGlxScreen = glxGetScreen(screenInfo.screens[screen]);

+    networkId = (int)req->networkId;

+    npipes = (int)req->npipes;

+    rdata = (void *)(req +1);

+

+    if (pGlxScreen->hyperpipeFuncs) {

+        pGlxScreen->hyperpipeFuncs->hyperpipeConfigFunc(screen,networkId,

+                                                        &hpId, &npipes,

+                                                        (void *) rdata);

+    }

+

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = __GLX_PAD(0) >> 2;

+    reply.n = 0;

+    reply.npipes = npipes;

+    reply.hpId = hpId;

+

+    if (client->swapped) {

+        __GLX_DECLARE_SWAP_VARIABLES;

+        __GLX_SWAP_SHORT(&reply.sequenceNumber);

+        __GLX_SWAP_INT(&reply.npipes);

+        __GLX_SWAP_INT(&reply.hpId);

+    }

+

+    WriteToClient(client, sz_xGLXHyperpipeConfigSGIXReply,

+                  (char *) &reply);

+

+    return Success;

+}

+

+

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

+

+/*

+** No support is provided for the vendor-private requests other than

+** allocating the entry points in the dispatch table.

+*/

+

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

+{

+    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;

+    GLint vendorcode = req->vendorCode;

+    __GLXdispatchVendorPrivProcPtr proc;

+

+

+    proc = (__GLXdispatchVendorPrivProcPtr)

+      __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info,

+				     vendorcode, 0);

+    if (proc != NULL) {

+	(*proc)(cl, (GLbyte*)req);

+	return Success;

+    }

+

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

+    return __glXError(GLXUnsupportedPrivateRequest);

+}

+

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

+{

+    xGLXVendorPrivateReq *req = (xGLXVendorPrivateReq *) pc;

+    GLint vendorcode = req->vendorCode;

+    __GLXdispatchVendorPrivProcPtr proc;

+

+

+    proc = (__GLXdispatchVendorPrivProcPtr)

+      __glXGetProtocolDecodeFunction(& VendorPriv_dispatch_info,

+				     vendorcode, 0);

+    if (proc != NULL) {

+	return (*proc)(cl, (GLbyte*)req);

+    }

+

+    cl->client->errorValue = vendorcode;

+    return __glXError(GLXUnsupportedPrivateRequest);

+}

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXQueryExtensionsStringReq *req = (xGLXQueryExtensionsStringReq *) pc;

+    xGLXQueryExtensionsStringReply reply;

+    __GLXscreen *pGlxScreen;

+    size_t n, length;

+    char *buf;

+    int err;

+

+    if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))

+	return err;

+

+    n = strlen(pGlxScreen->GLXextensions) + 1;

+    length = __GLX_PAD(n) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = length;

+    reply.n = n;

+

+    /* Allocate buffer to make sure it's a multiple of 4 bytes big.*/

+    buf = (char *) xalloc(length << 2);

+    if (buf == NULL)

+        return BadAlloc;

+    memcpy(buf, pGlxScreen->GLXextensions, n);

+

+    if (client->swapped) {

+        glxSwapQueryExtensionsStringReply(client, &reply, buf);

+    } else {

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

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

+    }

+

+    xfree(buf);

+    return Success;

+}

+

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

+{

+    ClientPtr client = cl->client;

+    xGLXQueryServerStringReq *req = (xGLXQueryServerStringReq *) pc;

+    xGLXQueryServerStringReply reply;

+    size_t n, length;

+    const char *ptr;

+    char *buf;

+    __GLXscreen *pGlxScreen;

+    int err;

+

+    if (!validGlxScreen(client, req->screen, &pGlxScreen, &err))

+	return err;

+

+    switch(req->name) {

+	case GLX_VENDOR:

+	    ptr = pGlxScreen->GLXvendor;

+	    break;

+	case GLX_VERSION:

+	    ptr = pGlxScreen->GLXversion;

+	    break;

+	case GLX_EXTENSIONS:

+	    ptr = pGlxScreen->GLXextensions;

+	    break;

+	default:

+	    return BadValue; 

+    }

+

+    n = strlen(ptr) + 1;

+    length = __GLX_PAD(n) >> 2;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = length;

+    reply.n = n;

+

+    buf = (char *) xalloc(length << 2);

+    if (buf == NULL) {

+        return BadAlloc;

+    }

+    memcpy(buf, ptr, n);

+

+    if (client->swapped) {

+        glxSwapQueryServerStringReply(client, &reply, buf);

+    } else {

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

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

+    }

+

+    xfree(buf);

+    return Success;

+}

+

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

+{

+    xGLXClientInfoReq *req = (xGLXClientInfoReq *) pc;

+    const char *buf;

+   

+    cl->GLClientmajorVersion = req->major;

+    cl->GLClientminorVersion = req->minor;

+    if (cl->GLClientextensions)

+	xfree(cl->GLClientextensions);

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

+    cl->GLClientextensions = xstrdup(buf);

+

+    return Success;

+}

diff --git a/xorg-server/glx/glxdri.c b/xorg-server/glx/glxdri.c
index bcb62ecf4..e4f061c54 100644
--- a/xorg-server/glx/glxdri.c
+++ b/xorg-server/glx/glxdri.c
@@ -1,1199 +1,1199 @@
-/*
- * Copyright © 2006 Red Hat, Inc
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without
- * fee, provided that the above copyright notice appear in all copies
- * and that both that copyright notice and this permission notice
- * appear in supporting documentation, and that the name of Red Hat,
- * Inc not be used in advertising or publicity pertaining to
- * distribution of the software without specific, written prior
- * permission.  Red Hat, Inc makes no representations about the
- * suitability of this software for any purpose.  It is provided "as
- * is" without express or implied warranty.
- *
- * RED HAT, INC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
- * NO EVENT SHALL RED HAT, INC BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
- * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
- * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdint.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#ifndef _MSC_VER
-#include <sys/time.h>
-#include <dlfcn.h>
-
-#include <drm.h>
-#endif
-
-#include <GL/gl.h>
-#include <GL/internal/dri_interface.h>
-
-#include <windowstr.h>
-#include <os.h>
-#include <damage.h>
-
-#define _XF86DRI_SERVER_
-#include <drm_sarea.h>
-#include <xf86drm.h>
-#include <xf86dristr.h>
-#include <xf86str.h>
-#include <xf86.h>
-#include <dri.h>
-
-#include "servermd.h"
-
-#define DRI_NEW_INTERFACE_ONLY
-#include "glxserver.h"
-#include "glxutil.h"
-#include "glxdricommon.h"
-
-#include "g_disptab.h"
-#include "glapitable.h"
-#include "glapi.h"
-#include "glthread.h"
-#include "dispatch.h"
-#include "extension_string.h"
-
-typedef struct __GLXDRIscreen   __GLXDRIscreen;
-typedef struct __GLXDRIcontext  __GLXDRIcontext;
-typedef struct __GLXDRIdrawable __GLXDRIdrawable;
-
-struct __GLXDRIscreen {
-    __GLXscreen		 base;
-    __DRIscreen		*driScreen;
-    void		*driver;
-
-    xf86EnterVTProc	*enterVT;
-    xf86LeaveVTProc	*leaveVT;
-
-    const __DRIcoreExtension *core;
-    const __DRIlegacyExtension *legacy;
-    const __DRIcopySubBufferExtension *copySubBuffer;
-    const __DRIswapControlExtension *swapControl;
-
-#ifdef __DRI_TEX_OFFSET
-    const __DRItexOffsetExtension *texOffset;
-    DRITexOffsetStartProcPtr texOffsetStart;
-    DRITexOffsetFinishProcPtr texOffsetFinish;
-    __GLXDRIdrawable *texOffsetOverride[16];
-    GLuint lastTexOffsetOverride;
-#endif
-
-    unsigned char glx_enable_bits[__GLX_EXT_BYTES];
-};
-
-struct __GLXDRIcontext {
-    __GLXcontext base;
-    __DRIcontext *driContext;
-    XID hwContextID;
-};
-
-struct __GLXDRIdrawable {
-    __GLXdrawable base;
-    __DRIdrawable *driDrawable;
-
-    /* Pulled in from old __GLXpixmap */
-#ifdef __DRI_TEX_OFFSET
-    GLint texname;
-    __GLXDRIcontext *ctx;
-    unsigned long long offset;
-    DamagePtr pDamage;
-#endif
-};
-
-static void
-__glXDRIleaveServer(GLboolean rendering)
-{
-    int i;
-
-    for (i = 0; rendering && i < screenInfo.numScreens; i++) {
-	__GLXDRIscreen * const screen =
-	    (__GLXDRIscreen *) glxGetScreen(screenInfo.screens[i]);
-	GLuint lastOverride = screen->lastTexOffsetOverride;
-
-	if (lastOverride) {
-	    __GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;
-	    int j;
-
-	    for (j = 0; j < lastOverride; j++) {
-		__GLXDRIdrawable *pGlxPix = texOffsetOverride[j];
-
-		if (pGlxPix && pGlxPix->texname) {
-		    pGlxPix->offset =
-			screen->texOffsetStart((PixmapPtr)pGlxPix->base.pDraw);
-		}
-	    }
-	}
-    }
-
-    DRIBlockHandler(NULL, NULL, NULL);
-
-    for (i = 0; rendering && i < screenInfo.numScreens; i++) {
-	__GLXDRIscreen * const screen =
-	    (__GLXDRIscreen *) glxGetScreen(screenInfo.screens[i]);
-	GLuint lastOverride = screen->lastTexOffsetOverride;
-
-	if (lastOverride) {
-	    __GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;
-	    int j;
-
-	    for (j = 0; j < lastOverride; j++) {
-		__GLXDRIdrawable *pGlxPix = texOffsetOverride[j];
-
-		if (pGlxPix && pGlxPix->texname) {
-		    screen->texOffset->setTexOffset(pGlxPix->ctx->driContext,
-						    pGlxPix->texname,
-						    pGlxPix->offset,
-						    pGlxPix->base.pDraw->depth,
-						    ((PixmapPtr)pGlxPix->base.pDraw)->devKind);
-		}
-	    }
-	}
-    }
-}
-    
-static void
-__glXDRIenterServer(GLboolean rendering)
-{
-    int i;
-
-    for (i = 0; rendering && i < screenInfo.numScreens; i++) {
-	__GLXDRIscreen * const screen = (__GLXDRIscreen *)
-	    glxGetScreen(screenInfo.screens[i]);
-
-	if (screen->lastTexOffsetOverride) {
-	    CALL_Flush(GET_DISPATCH(), ());
-	    break;
-	}
-    }
-
-    DRIWakeupHandler(NULL, 0, NULL);
-}
-
-
-static void
-__glXDRIdoReleaseTexImage(__GLXDRIscreen *screen, __GLXDRIdrawable *drawable)
-{
-    GLuint lastOverride = screen->lastTexOffsetOverride;
-
-    if (lastOverride) {
-	__GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;
-	int i;
-
-	for (i = 0; i < lastOverride; i++) {
-	    if (texOffsetOverride[i] == drawable) {
-		if (screen->texOffsetFinish)
-		    screen->texOffsetFinish((PixmapPtr)drawable->base.pDraw);
-
-		texOffsetOverride[i] = NULL;
-
-		if (i + 1 == lastOverride) {
-		    lastOverride = 0;
-
-		    while (i--) {
-			if (texOffsetOverride[i]) {
-			    lastOverride = i + 1;
-			    break;
-			}
-		    }
-
-		    screen->lastTexOffsetOverride = lastOverride;
-
-		    break;
-		}
-	    }
-	}
-    }
-}
-
-
-static void
-__glXDRIdrawableDestroy(__GLXdrawable *drawable)
-{
-    __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable;
-    __GLXDRIscreen *screen;
-    int i;
-
-    for (i = 0; i < screenInfo.numScreens; i++) {
-	screen = (__GLXDRIscreen *) glxGetScreen(screenInfo.screens[i]);
-	__glXDRIdoReleaseTexImage(screen, private);
-    }
-
-    /* If the X window was destroyed, the dri DestroyWindow hook will
-     * aready have taken care of this, so only call if pDraw isn't NULL. */
-    if (drawable->pDraw != NULL) {
-	screen = (__GLXDRIscreen *) glxGetScreen(drawable->pDraw->pScreen);
-	(*screen->core->destroyDrawable)(private->driDrawable);
-
-	__glXenterServer(GL_FALSE);
-	DRIDestroyDrawable(drawable->pDraw->pScreen,
-			   serverClient, drawable->pDraw);
-	__glXleaveServer(GL_FALSE);
-    }
-
-    __glXDrawableRelease(drawable);
-
-    xfree(private);
-}
-
-static GLboolean
-__glXDRIdrawableSwapBuffers(__GLXdrawable *basePrivate)
-{
-    __GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;
-    __GLXDRIscreen *screen =
-	(__GLXDRIscreen *) glxGetScreen(basePrivate->pDraw->pScreen);
-
-    (*screen->core->swapBuffers)(private->driDrawable);
-
-    return TRUE;
-}
-
-
-static int
-__glXDRIdrawableSwapInterval(__GLXdrawable *baseDrawable, int interval)
-{
-    __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseDrawable;
-    __GLXDRIscreen *screen =
-	(__GLXDRIscreen *) glxGetScreen(baseDrawable->pDraw->pScreen);
-
-    if (screen->swapControl)
-	screen->swapControl->setSwapInterval(draw->driDrawable, interval);
-
-    return 0;
-}
-
-
-static void
-__glXDRIdrawableCopySubBuffer(__GLXdrawable *basePrivate,
-			       int x, int y, int w, int h)
-{
-    __GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;
-    __GLXDRIscreen *screen = (__GLXDRIscreen *)
-	glxGetScreen(basePrivate->pDraw->pScreen);
-
-    if (screen->copySubBuffer)
-	screen->copySubBuffer->copySubBuffer(private->driDrawable, x, y, w, h);
-}
-
-static void
-__glXDRIcontextDestroy(__GLXcontext *baseContext)
-{
-    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
-    Bool retval;
-
-    screen->core->destroyContext(context->driContext);
-
-    __glXenterServer(GL_FALSE);
-    retval = DRIDestroyContext(baseContext->pGlxScreen->pScreen,
-			       context->hwContextID);
-    __glXleaveServer(GL_FALSE);
-
-    __glXContextDestroy(&context->base);
-    xfree(context);
-}
-
-static int
-__glXDRIcontextMakeCurrent(__GLXcontext *baseContext)
-{
-    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
-    __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv;
-    __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv;
-
-    return (*screen->core->bindContext)(context->driContext,
-					draw->driDrawable,
-					read->driDrawable);
-}					      
-
-static int
-__glXDRIcontextLoseCurrent(__GLXcontext *baseContext)
-{
-    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
-
-    return (*screen->core->unbindContext)(context->driContext);
-}
-
-static int
-__glXDRIcontextCopy(__GLXcontext *baseDst, __GLXcontext *baseSrc,
-		    unsigned long mask)
-{
-    __GLXDRIcontext *dst = (__GLXDRIcontext *) baseDst;
-    __GLXDRIcontext *src = (__GLXDRIcontext *) baseSrc;
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) dst->base.pGlxScreen;
-
-    return (*screen->core->copyContext)(dst->driContext,
-					src->driContext, mask);
-}
-
-static int
-__glXDRIcontextForceCurrent(__GLXcontext *baseContext)
-{
-    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;
-    __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv;
-    __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv;
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;
-
-    return (*screen->core->bindContext)(context->driContext,
-					draw->driDrawable,
-					read->driDrawable);
-}
-
-static void
-glxFillAlphaChannel (CARD32 *pixels, CARD32 rowstride, int width, int height)
-{
-    int i;
-    CARD32 *p, *end;
-
-    rowstride /= 4;
-    
-    for (i = 0; i < height; i++)
-    {
-	p = pixels;
-	end = p + width;
-	while (p < end)
-	  *p++ |= 0xFF000000;
-	pixels += rowstride;
-    }
-}
-
-static Bool
-testTexOffset(__GLXDRIscreen * const screen, PixmapPtr pPixmap)
-{
-    Bool ret;
-
-    if (!screen->texOffsetStart || !screen->texOffset)
-	return FALSE;
-
-    __glXenterServer(GL_FALSE);
-    ret = screen->texOffsetStart(pPixmap) != ~0ULL;
-    __glXleaveServer(GL_FALSE);
-
-    return ret;
-}
-
-/*
- * (sticking this here for lack of a better place)
- * Known issues with the GLX_EXT_texture_from_pixmap implementation:
- * - In general we ignore the fbconfig, lots of examples follow
- * - No fbconfig handling for multiple mipmap levels
- * - No fbconfig handling for 1D textures
- * - No fbconfig handling for TEXTURE_TARGET
- * - No fbconfig exposure of Y inversion state
- * - No GenerateMipmapEXT support (due to no FBO support)
- * - No support for anything but 16bpp and 32bpp-sparse pixmaps
- */
-
-static int
-__glXDRIbindTexImage(__GLXcontext *baseContext,
-		     int buffer,
-		     __GLXdrawable *glxPixmap)
-{
-    RegionPtr	pRegion = NULL;
-    PixmapPtr	pixmap;
-    int		bpp, override = 0, texname;
-    GLenum	format, type;
-    ScreenPtr pScreen = glxPixmap->pDraw->pScreen;
-    __GLXDRIdrawable *driDraw = (__GLXDRIdrawable *) glxPixmap;
-    __GLXDRIscreen * const screen = (__GLXDRIscreen *) glxGetScreen(pScreen);
-
-    CALL_GetIntegerv(GET_DISPATCH(), (glxPixmap->target == GL_TEXTURE_2D ?
-				      GL_TEXTURE_BINDING_2D :
-				      GL_TEXTURE_BINDING_RECTANGLE_NV,
-				      &texname));
-
-    if (!texname)
-	return __glXError(GLXBadContextState);
-
-    pixmap = (PixmapPtr) glxPixmap->pDraw;
-
-    if (testTexOffset(screen, pixmap)) {
-	__GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;
-	int i, firstEmpty = 16;
-
-	for (i = 0; i < 16; i++) {
-	    if (texOffsetOverride[i] == driDraw)
-		goto alreadyin; 
-
-	    if (firstEmpty == 16 && !texOffsetOverride[i])
-		firstEmpty = i;
-	}
-
-	if (firstEmpty == 16) {
-	    ErrorF("%s: Failed to register texture offset override\n", __func__);
-	    goto nooverride;
-	}
-
-	if (firstEmpty >= screen->lastTexOffsetOverride)
-	    screen->lastTexOffsetOverride = firstEmpty + 1;
-
-	texOffsetOverride[firstEmpty] = driDraw;
-
-alreadyin:
-	override = 1;
-
-	driDraw->ctx = (__GLXDRIcontext*)baseContext;
-
-	if (texname == driDraw->texname)
-	    return Success;
-
-	driDraw->texname = texname;
-
-	screen->texOffset->setTexOffset(driDraw->ctx->driContext, texname, 0,
-					pixmap->drawable.depth,
-					pixmap->devKind);
-    }
-nooverride:
-
-    if (!driDraw->pDamage) {
-	if (!override) {
-	    driDraw->pDamage = DamageCreate(NULL, NULL, DamageReportNone,
-					    TRUE, pScreen, NULL);
-	    if (!driDraw->pDamage)
-		return BadAlloc;
-
-	    DamageRegister ((DrawablePtr) pixmap, driDraw->pDamage);
-	}
-
-	pRegion = NULL;
-    } else {
-	pRegion = DamageRegion(driDraw->pDamage);
-	if (REGION_NIL(pRegion))
-	    return Success;
-    }
-
-    /* XXX 24bpp packed, 8, etc */
-    if (pixmap->drawable.depth >= 24) {
-	bpp = 4;
-	format = GL_BGRA;
-	type =
-#if X_BYTE_ORDER == X_BIG_ENDIAN
-	    !override ? GL_UNSIGNED_INT_8_8_8_8_REV :
-#endif
-	    GL_UNSIGNED_BYTE;
-    } else {
-	bpp = 2;
-	format = GL_RGB;
-	type = GL_UNSIGNED_SHORT_5_6_5;
-    }
-
-    if (pRegion == NULL)
-    {
-	void *data = NULL;
-
-	if (!override) {
-	    unsigned pitch = PixmapBytePad(pixmap->drawable.width,
-					   pixmap->drawable.depth); 
-
-	    data = xalloc(pitch * pixmap->drawable.height);
-
-	    __glXenterServer(GL_FALSE);
-	    pScreen->GetImage(&pixmap->drawable, 0 /*pixmap->drawable.x*/,
-			      0 /*pixmap->drawable.y*/, pixmap->drawable.width,
-			      pixmap->drawable.height, ZPixmap, ~0, data);
-	    __glXleaveServer(GL_FALSE);
-
-	    if (pixmap->drawable.depth == 24)
-		glxFillAlphaChannel(data,
-				    pitch,
-				    pixmap->drawable.width,
-				    pixmap->drawable.height);
-
-	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH,
-					       pitch / bpp) );
-	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS, 0) );
-	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS, 0) );
-	}
-
-	CALL_TexImage2D( GET_DISPATCH(),
-			 (glxPixmap->target,
-			  0,
-			  bpp == 4 ? 4 : 3,
-			  pixmap->drawable.width,
-			  pixmap->drawable.height,
-			  0,
-			  format,
-			  type,
-			  data) );
-
-	xfree(data);
-    } else if (!override) {
-        int i, numRects;
-	BoxPtr p;
-
-	numRects = REGION_NUM_RECTS (pRegion);
-	p = REGION_RECTS (pRegion);
-
-	CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS, 0) );
-	CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS, 0) );
-
-	for (i = 0; i < numRects; i++)
-	{
-	    unsigned pitch = PixmapBytePad(p[i].x2 - p[i].x1,
-					   pixmap->drawable.depth);
-	    void *data = xalloc(pitch * (p[i].y2 - p[i].y1));
-
-	    __glXenterServer(GL_FALSE);
-	    pScreen->GetImage(&pixmap->drawable, /*pixmap->drawable.x +*/ p[i].x1,
-			      /*pixmap->drawable.y*/ + p[i].y1, p[i].x2 - p[i].x1,
-			      p[i].y2 - p[i].y1, ZPixmap, ~0, data);
-	    __glXleaveServer(GL_FALSE);
-
-	    if (pixmap->drawable.depth == 24)
-		glxFillAlphaChannel(data,
-				    pitch,
-				    p[i].x2 - p[i].x1,
-				    p[i].y2 - p[i].y1);
-
-	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH,
-					       pitch / bpp) );
-
-	    CALL_TexSubImage2D( GET_DISPATCH(),
-				(glxPixmap->target,
-				 0,
-				 p[i].x1, p[i].y1,
-				 p[i].x2 - p[i].x1, p[i].y2 - p[i].y1,
-				 format,
-				 type,
-				 data) );
-
-	    xfree(data);
-	}
-    }
-
-    if (!override)
-	DamageEmpty(driDraw->pDamage);
-
-    return Success;
-}
-
-static int
-__glXDRIreleaseTexImage(__GLXcontext *baseContext,
-			int buffer,
-			__GLXdrawable *pixmap)
-{
-    __GLXDRIscreen *screen =
-	(__GLXDRIscreen *) glxGetScreen(pixmap->pDraw->pScreen);
-    __GLXDRIdrawable *drawable = (__GLXDRIdrawable *) pixmap;
-
-    __glXDRIdoReleaseTexImage(screen, drawable);
-
-    return Success;
-}
-
-static __GLXtextureFromPixmap __glXDRItextureFromPixmap = {
-    __glXDRIbindTexImage,
-    __glXDRIreleaseTexImage
-};
-
-static void
-__glXDRIscreenDestroy(__GLXscreen *baseScreen)
-{
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;
-
-    screen->core->destroyScreen(screen->driScreen);
-
-    dlclose(screen->driver);
-
-    __glXScreenDestroy(baseScreen);
-
-    xfree(screen);
-}
-
-static __GLXcontext *
-__glXDRIscreenCreateContext(__GLXscreen *baseScreen,
-			    __GLXconfig *glxConfig,
-			    __GLXcontext *baseShareContext)
-{
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;
-    __GLXDRIcontext *context, *shareContext;
-    __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig;
-    VisualPtr visual;
-    int i;
-    GLboolean retval;
-    __DRIcontext *driShare;
-    drm_context_t hwContext;
-    ScreenPtr pScreen = baseScreen->pScreen;
-
-    shareContext = (__GLXDRIcontext *) baseShareContext;
-    if (shareContext)
-	driShare = shareContext->driContext;
-    else
-	driShare = NULL;
-
-    if (baseShareContext && baseShareContext->isDirect)
-        return NULL;
-
-    context = xcalloc(1, sizeof *context);
-    if (context == NULL)
-	return NULL;
-
-    context->base.destroy           = __glXDRIcontextDestroy;
-    context->base.makeCurrent       = __glXDRIcontextMakeCurrent;
-    context->base.loseCurrent       = __glXDRIcontextLoseCurrent;
-    context->base.copy              = __glXDRIcontextCopy;
-    context->base.forceCurrent      = __glXDRIcontextForceCurrent;
-
-    context->base.textureFromPixmap = &__glXDRItextureFromPixmap;
-    /* Find the requested X visual */
-    visual = pScreen->visuals;
-    for (i = 0; i < pScreen->numVisuals; i++, visual++)
-	if (visual->vid == glxConfig->visualID)
-	    break;
-    if (i == pScreen->numVisuals)
-	return NULL;
-
-    context->hwContextID = FakeClientID(0);
-
-    __glXenterServer(GL_FALSE);
-    retval = DRICreateContext(baseScreen->pScreen, visual,
-			      context->hwContextID, &hwContext);
-    __glXleaveServer(GL_FALSE);
-
-    if (!retval)
-    	return NULL;
-
-    context->driContext =
-	screen->legacy->createNewContext(screen->driScreen,
-					 config->driConfig,
-					 0, /* render type */
-					 driShare,
-					 hwContext,
-					 context);
-
-    if (context->driContext == NULL) {
-    	__glXenterServer(GL_FALSE);
-	retval = DRIDestroyContext(baseScreen->pScreen, context->hwContextID);
-    	__glXleaveServer(GL_FALSE);
-	xfree(context);
-	return NULL;
-    }
-
-    return &context->base;
-}
-
-static __GLXdrawable *
-__glXDRIscreenCreateDrawable(__GLXscreen *screen,
-			     DrawablePtr pDraw,
-			     int type,
-			     XID drawId,
-			     __GLXconfig *glxConfig)
-{
-    __GLXDRIscreen *driScreen = (__GLXDRIscreen *) screen;
-    __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig;
-    __GLXDRIdrawable *private;
-    GLboolean retval;
-    drm_drawable_t hwDrawable;
-
-    private = xcalloc(1, sizeof *private);
-    if (private == NULL)
-	return NULL;
-
-    if (!__glXDrawableInit(&private->base, screen,
-			   pDraw, type, drawId, glxConfig)) {
-        xfree(private);
-	return NULL;
-    }
-
-    private->base.destroy       = __glXDRIdrawableDestroy;
-    private->base.swapBuffers   = __glXDRIdrawableSwapBuffers;
-    private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer;
-    private->base.waitX		= NULL;
-    private->base.waitGL	= NULL;
-
-    __glXenterServer(GL_FALSE);
-    retval = DRICreateDrawable(screen->pScreen, serverClient,
-			       pDraw, &hwDrawable);
-    __glXleaveServer(GL_FALSE);
-
-    if (!retval) {
-    	xfree(private);
-    	return NULL;
-    }
-
-    /* The last argument is 'attrs', which is used with pbuffers which
-     * we currently don't support. */
-
-    private->driDrawable =
-	(driScreen->legacy->createNewDrawable)(driScreen->driScreen,
-					       config->driConfig,
-					       hwDrawable, 0, NULL, private);
-
-    if (private->driDrawable == NULL) {
-	__glXenterServer(GL_FALSE);
-	DRIDestroyDrawable(screen->pScreen, serverClient, pDraw);
-	__glXleaveServer(GL_FALSE);
-	xfree(private);
-	return NULL;
-    }
-
-    return &private->base;
-}
-
-static GLboolean
-getDrawableInfo(__DRIdrawable *driDrawable,
-		unsigned int *index, unsigned int *stamp,
-		int *x, int *y, int *width, int *height,
-		int *numClipRects, drm_clip_rect_t **ppClipRects,
-		int *backX, int *backY,
-		int *numBackClipRects, drm_clip_rect_t **ppBackClipRects,
-		void *data)
-{
-    __GLXDRIdrawable *drawable = data;
-    ScreenPtr pScreen;
-    drm_clip_rect_t *pClipRects, *pBackClipRects;
-    GLboolean retval;
-    size_t size;
-
-    /* If the X window has been destroyed, give up here. */
-    if (drawable->base.pDraw == NULL)
-	return GL_FALSE;
-
-    pScreen = drawable->base.pDraw->pScreen;
-    __glXenterServer(GL_FALSE);
-    retval = DRIGetDrawableInfo(pScreen, drawable->base.pDraw, index, stamp,
-				x, y, width, height,
-				numClipRects, &pClipRects,
-				backX, backY,
-				numBackClipRects, &pBackClipRects);
-    __glXleaveServer(GL_FALSE);
-
-    if (retval && *numClipRects > 0) {
-	size = sizeof (drm_clip_rect_t) * *numClipRects;
-	*ppClipRects = xalloc (size);
-
-	/* Clip cliprects to screen dimensions (redirected windows) */
-	if (*ppClipRects != NULL) {
-	    int i, j;
-
-	    for (i = 0, j = 0; i < *numClipRects; i++) {
-	        (*ppClipRects)[j].x1 = max(pClipRects[i].x1, 0);
-		(*ppClipRects)[j].y1 = max(pClipRects[i].y1, 0);
-		(*ppClipRects)[j].x2 = min(pClipRects[i].x2, pScreen->width);
-		(*ppClipRects)[j].y2 = min(pClipRects[i].y2, pScreen->height);
-
-		if ((*ppClipRects)[j].x1 < (*ppClipRects)[j].x2 &&
-		    (*ppClipRects)[j].y1 < (*ppClipRects)[j].y2) {
-		    j++;
-		}
-	    }
-
-	    if (*numClipRects != j) {
-		*numClipRects = j;
-		*ppClipRects = xrealloc (*ppClipRects,
-					 sizeof (drm_clip_rect_t) *
-					 *numClipRects);
-	    }
-	} else
-	    *numClipRects = 0;
-    }
-    else {
-      *ppClipRects = NULL;
-      *numClipRects = 0;
-    }
-      
-    if (retval && *numBackClipRects > 0) {
-	size = sizeof (drm_clip_rect_t) * *numBackClipRects;
-	*ppBackClipRects = xalloc (size);
-	if (*ppBackClipRects != NULL)
-	    memcpy (*ppBackClipRects, pBackClipRects, size);
-	else
-	    *numBackClipRects = 0;
-    }
-    else {
-      *ppBackClipRects = NULL;
-      *numBackClipRects = 0;
-    }
-
-    return retval;
-}
-
-static void __glXReportDamage(__DRIdrawable *driDraw,
-			      int x, int y,
-			      drm_clip_rect_t *rects, int num_rects,
-			      GLboolean front_buffer,
-			      void *data)
-{
-    __GLXDRIdrawable *drawable = data;
-    DrawablePtr pDraw = drawable->base.pDraw;
-    RegionRec region;
-
-    __glXenterServer(GL_FALSE);
-
-    REGION_INIT(pDraw->pScreen, &region, (BoxPtr) rects, num_rects);
-    REGION_TRANSLATE(pScreen, &region, pDraw->x, pDraw->y);
-    DamageRegionAppend(pDraw, &region);
-    /* This is wrong, this needs a seperate function. */
-    DamageRegionProcessPending(pDraw);
-    REGION_UNINIT(pDraw->pScreen, &region);
-
-    __glXleaveServer(GL_FALSE);
-}
-
-static const __DRIgetDrawableInfoExtension getDrawableInfoExtension = {
-    { __DRI_GET_DRAWABLE_INFO, __DRI_GET_DRAWABLE_INFO_VERSION },
-    getDrawableInfo
-};
-
-static const __DRIdamageExtension damageExtension = {
-    { __DRI_DAMAGE, __DRI_DAMAGE_VERSION },
-    __glXReportDamage,
-};
-
-static const __DRIextension *loader_extensions[] = {
-    &systemTimeExtension.base,
-    &getDrawableInfoExtension.base,
-    &damageExtension.base,
-    NULL
-};
-
-
-
-static const char dri_driver_path[] = DRI_DRIVER_PATH;
-
-static Bool
-glxDRIEnterVT (int index, int flags)
-{
-    __GLXDRIscreen *screen = (__GLXDRIscreen *) 
-	glxGetScreen(screenInfo.screens[index]);
-
-    LogMessage(X_INFO, "AIGLX: Resuming AIGLX clients after VT switch\n");
-
-    if (!(*screen->enterVT) (index, flags))
-	return FALSE;
-    
-    glxResumeClients();
-
-    return TRUE;
-}
-
-static void
-glxDRILeaveVT (int index, int flags)
-{
-    __GLXDRIscreen *screen = (__GLXDRIscreen *)
-	glxGetScreen(screenInfo.screens[index]);
-
-    LogMessage(X_INFO, "AIGLX: Suspending AIGLX clients for VT switch\n");
-
-    glxSuspendClients();
-
-    return (*screen->leaveVT) (index, flags);
-}
-
-static void
-initializeExtensions(__GLXDRIscreen *screen)
-{
-    const __DRIextension **extensions;
-    int i;
-
-    extensions = screen->core->getExtensions(screen->driScreen);
-
-    for (i = 0; extensions[i]; i++) {
-#ifdef __DRI_READ_DRAWABLE
-	if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) {
-	    __glXEnableExtension(screen->glx_enable_bits,
-				 "GLX_SGI_make_current_read");
-	    
-	    LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_make_current_read\n");
-	}
-#endif
-
-#ifdef __DRI_COPY_SUB_BUFFER
-	if (strcmp(extensions[i]->name, __DRI_COPY_SUB_BUFFER) == 0) {
-	    screen->copySubBuffer = (__DRIcopySubBufferExtension *) extensions[i];
-	    __glXEnableExtension(screen->glx_enable_bits,
-				 "GLX_MESA_copy_sub_buffer");
-	    
-	    LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n");
-	}
-#endif
-
-#ifdef __DRI_SWAP_CONTROL
-	if (strcmp(extensions[i]->name, __DRI_SWAP_CONTROL) == 0) {
-	    screen->swapControl = (__DRIswapControlExtension *) extensions[i];
-	    __glXEnableExtension(screen->glx_enable_bits,
-				 "GLX_SGI_swap_control");
-	    __glXEnableExtension(screen->glx_enable_bits,
-				 "GLX_MESA_swap_control");
-	    
-	    LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n");
-	}
-#endif
-
-#ifdef __DRI_TEX_OFFSET
-	if (strcmp(extensions[i]->name, __DRI_TEX_OFFSET) == 0) {
-	    screen->texOffset = (__DRItexOffsetExtension *) extensions[i];
-	    LogMessage(X_INFO, "AIGLX: enabled GLX_texture_from_pixmap with driver support\n");
-	}
-#endif
-	/* Ignore unknown extensions */
-    }
-}
-    
-extern __GLXconfig *
-glxConvertConfigs(const __DRIcoreExtension *core, const __DRIconfig **configs);
-
-static __GLXscreen *
-__glXDRIscreenProbe(ScreenPtr pScreen)
-{
-    drm_handle_t hSAREA;
-    drmAddress pSAREA = NULL;
-    char *BusID;
-    __DRIversion   ddx_version;
-    __DRIversion   dri_version;
-    __DRIversion   drm_version;
-    __DRIframebuffer  framebuffer;
-    int   fd = -1;
-    int   status;
-    drm_magic_t magic;
-    drmVersionPtr version;
-    int newlyopened;
-    char *driverName;
-    drm_handle_t  hFB;
-    int        junk;
-    __GLXDRIscreen *screen;
-    char filename[128];
-    Bool isCapable;
-    size_t buffer_size;
-    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
-    const __DRIconfig **driConfigs;
-    const __DRIextension **extensions;
-    int i;
-
-    if (!xf86LoaderCheckSymbol("DRIQueryDirectRenderingCapable") ||
-	!DRIQueryDirectRenderingCapable(pScreen, &isCapable) ||
-	!isCapable) {
-	LogMessage(X_INFO,
-		   "AIGLX: Screen %d is not DRI capable\n", pScreen->myNum);
-	return NULL;
-    }
-
-    screen = xcalloc(1, sizeof *screen);
-    if (screen == NULL)
-      return NULL;
-
-    screen->base.destroy        = __glXDRIscreenDestroy;
-    screen->base.createContext  = __glXDRIscreenCreateContext;
-    screen->base.createDrawable = __glXDRIscreenCreateDrawable;
-    screen->base.swapInterval   = __glXDRIdrawableSwapInterval;
-    screen->base.pScreen       = pScreen;
-
-    __glXInitExtensionEnableBits(screen->glx_enable_bits);
-
-    /* DRI protocol version. */
-    dri_version.major = XF86DRI_MAJOR_VERSION;
-    dri_version.minor = XF86DRI_MINOR_VERSION;
-    dri_version.patch = XF86DRI_PATCH_VERSION;
-
-    if (!DRIOpenConnection(pScreen, &hSAREA, &BusID)) {
-	LogMessage(X_ERROR, "AIGLX error: DRIOpenConnection failed\n");
-	goto handle_error;
-    }
-
-    fd = drmOpenOnce(NULL, BusID, &newlyopened);
-
-    if (fd < 0) {
-	LogMessage(X_ERROR, "AIGLX error: drmOpenOnce failed (%s)\n",
-		   strerror(-fd));
-	goto handle_error;
-    }
-
-    if (drmGetMagic(fd, &magic)) {
-	LogMessage(X_ERROR, "AIGLX error: drmGetMagic failed\n");
-	goto handle_error;
-    }
-
-    version = drmGetVersion(fd);
-    if (version) {
-	drm_version.major = version->version_major;
-	drm_version.minor = version->version_minor;
-	drm_version.patch = version->version_patchlevel;
-	drmFreeVersion(version);
-    }
-    else {
-	drm_version.major = -1;
-	drm_version.minor = -1;
-	drm_version.patch = -1;
-    }
-
-    if (newlyopened && !DRIAuthConnection(pScreen, magic)) {
-	LogMessage(X_ERROR, "AIGLX error: DRIAuthConnection failed\n");
-	goto handle_error;
-    }
-
-    /* Get device name (like "tdfx") and the ddx version numbers.
-     * We'll check the version in each DRI driver's "createNewScreen"
-     * function. */
-    if (!DRIGetClientDriverName(pScreen,
-				&ddx_version.major,
-				&ddx_version.minor,
-				&ddx_version.patch,
-				&driverName)) {
-	LogMessage(X_ERROR, "AIGLX error: DRIGetClientDriverName failed\n");
-	goto handle_error;
-    }
-
-    snprintf(filename, sizeof filename, "%s/%s_dri.so",
-             dri_driver_path, driverName);
-
-    screen->driver = dlopen(filename, RTLD_LAZY | RTLD_LOCAL);
-    if (screen->driver == NULL) {
-	LogMessage(X_ERROR, "AIGLX error: dlopen of %s failed (%s)\n",
-		   filename, dlerror());
-        goto handle_error;
-    }
-
-    extensions = dlsym(screen->driver, __DRI_DRIVER_EXTENSIONS);
-    if (extensions == NULL) {
-	LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n",
-		   driverName, dlerror());
-	goto handle_error;
-    }
-    
-    for (i = 0; extensions[i]; i++) {
-	if (strcmp(extensions[i]->name, __DRI_CORE) == 0 &&
-	    extensions[i]->version >= __DRI_CORE_VERSION) {
-		screen->core = (__DRIcoreExtension *) extensions[i];
-	}
-
-	if (strcmp(extensions[i]->name, __DRI_LEGACY) == 0 &&
-	    extensions[i]->version >= __DRI_LEGACY_VERSION) {
-		screen->legacy = (__DRIlegacyExtension *) extensions[i];
-	}
-    }
-
-    if (screen->core == NULL || screen->legacy == NULL) {
-	LogMessage(X_ERROR,
-		   "AIGLX error: %s does not export required DRI extension\n",
-		   driverName);
-	goto handle_error;
-    }
-
-    /*
-     * Get device-specific info.  pDevPriv will point to a struct
-     * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) that
-     * has information about the screen size, depth, pitch, ancilliary
-     * buffers, DRM mmap handles, etc.
-     */
-    if (!DRIGetDeviceInfo(pScreen, &hFB, &junk,
-			  &framebuffer.size, &framebuffer.stride,
-			  &framebuffer.dev_priv_size, &framebuffer.dev_priv)) {
-	LogMessage(X_ERROR, "AIGLX error: XF86DRIGetDeviceInfo failed\n");
-	goto handle_error;
-    }
-
-    framebuffer.width = pScreen->width;
-    framebuffer.height = pScreen->height;
-
-    /* Map the framebuffer region. */
-    status = drmMap(fd, hFB, framebuffer.size, 
-		    (drmAddressPtr)&framebuffer.base);
-    if (status != 0) {
-	LogMessage(X_ERROR, "AIGLX error: drmMap of framebuffer failed (%s)\n",
-		   strerror(-status));
-	goto handle_error;
-    }
-
-    /* Map the SAREA region.  Further mmap regions may be setup in
-     * each DRI driver's "createNewScreen" function.
-     */
-    status = drmMap(fd, hSAREA, SAREA_MAX, &pSAREA);
-    if (status != 0) {
-	LogMessage(X_ERROR, "AIGLX error: drmMap of SAREA failed (%s)\n",
-		   strerror(-status));
-	goto handle_error;
-    }
-    
-    screen->driScreen =
-	(*screen->legacy->createNewScreen)(pScreen->myNum,
-					   &ddx_version,
-					   &dri_version,
-					   &drm_version,
-					   &framebuffer,
-					   pSAREA,
-					   fd,
-					   loader_extensions,
-					   &driConfigs,
-					   screen);
-
-    if (screen->driScreen == NULL) {
-	LogMessage(X_ERROR,
-		   "AIGLX error: Calling driver entry point failed\n");
-	goto handle_error;
-    }
-
-    screen->base.fbconfigs = glxConvertConfigs(screen->core, driConfigs);
-
-    initializeExtensions(screen);
-
-    DRIGetTexOffsetFuncs(pScreen, &screen->texOffsetStart,
-			 &screen->texOffsetFinish);
-
-    __glXScreenInit(&screen->base, pScreen);
-
-    /* The first call simply determines the length of the extension string.
-     * This allows us to allocate some memory to hold the extension string,
-     * but it requires that we call __glXGetExtensionString a second time.
-     */
-    buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);
-    if (buffer_size > 0) {
-	if (screen->base.GLXextensions != NULL) {
-	    xfree(screen->base.GLXextensions);
-	}
-
-	screen->base.GLXextensions = xnfalloc(buffer_size);
-	(void) __glXGetExtensionString(screen->glx_enable_bits, 
-				       screen->base.GLXextensions);
-    }
-
-    __glXsetEnterLeaveServerFuncs(__glXDRIenterServer, __glXDRIleaveServer);
-
-    screen->enterVT = pScrn->EnterVT;
-    pScrn->EnterVT = glxDRIEnterVT;
-    screen->leaveVT = pScrn->LeaveVT;
-    pScrn->LeaveVT = glxDRILeaveVT;
-
-    LogMessage(X_INFO,
-	       "AIGLX: Loaded and initialized %s\n", filename);
-
-    return &screen->base;
-
- handle_error:
-    if (pSAREA != NULL)
-	drmUnmap(pSAREA, SAREA_MAX);
-
-    if (framebuffer.base != NULL)
-	drmUnmap((drmAddress)framebuffer.base, framebuffer.size);
-
-    if (fd >= 0)
-	drmCloseOnce(fd);
-
-    DRICloseConnection(pScreen);
-
-    if (screen->driver)
-        dlclose(screen->driver);
-
-    xfree(screen);
-
-    LogMessage(X_ERROR, "AIGLX: reverting to software rendering\n");
-
-    return NULL;
-}
-
-_X_EXPORT __GLXprovider __glXDRIProvider = {
-    __glXDRIscreenProbe,
-    "DRI",
-    NULL
-};
+/*

+ * Copyright © 2006 Red Hat, Inc

+ *

+ * Permission to use, copy, modify, distribute, and sell this software

+ * and its documentation for any purpose is hereby granted without

+ * fee, provided that the above copyright notice appear in all copies

+ * and that both that copyright notice and this permission notice

+ * appear in supporting documentation, and that the name of Red Hat,

+ * Inc not be used in advertising or publicity pertaining to

+ * distribution of the software without specific, written prior

+ * permission.  Red Hat, Inc makes no representations about the

+ * suitability of this software for any purpose.  It is provided "as

+ * is" without express or implied warranty.

+ *

+ * RED HAT, INC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN

+ * NO EVENT SHALL RED HAT, INC BE LIABLE FOR ANY SPECIAL, INDIRECT OR

+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS

+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,

+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN

+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <stdint.h>

+#include <stdio.h>

+#include <string.h>

+#include <errno.h>

+#ifndef _MSC_VER

+#include <sys/time.h>

+#include <dlfcn.h>

+

+#include <drm.h>

+#endif

+

+#include <GL/gl.h>

+#include <GL/internal/dri_interface.h>

+

+#include <windowstr.h>

+#include <os.h>

+#include <damage.h>

+

+#define _XF86DRI_SERVER_

+#include <drm_sarea.h>

+#include <xf86drm.h>

+#include <X11/dri/xf86driproto.h>

+#include <xf86str.h>

+#include <xf86.h>

+#include <dri.h>

+

+#include "servermd.h"

+

+#define DRI_NEW_INTERFACE_ONLY

+#include "glxserver.h"

+#include "glxutil.h"

+#include "glxdricommon.h"

+

+#include "g_disptab.h"

+#include "glapitable.h"

+#include "glapi.h"

+#include "glthread.h"

+#include "dispatch.h"

+#include "extension_string.h"

+

+typedef struct __GLXDRIscreen   __GLXDRIscreen;

+typedef struct __GLXDRIcontext  __GLXDRIcontext;

+typedef struct __GLXDRIdrawable __GLXDRIdrawable;

+

+struct __GLXDRIscreen {

+    __GLXscreen		 base;

+    __DRIscreen		*driScreen;

+    void		*driver;

+

+    xf86EnterVTProc	*enterVT;

+    xf86LeaveVTProc	*leaveVT;

+

+    const __DRIcoreExtension *core;

+    const __DRIlegacyExtension *legacy;

+    const __DRIcopySubBufferExtension *copySubBuffer;

+    const __DRIswapControlExtension *swapControl;

+

+#ifdef __DRI_TEX_OFFSET

+    const __DRItexOffsetExtension *texOffset;

+    DRITexOffsetStartProcPtr texOffsetStart;

+    DRITexOffsetFinishProcPtr texOffsetFinish;

+    __GLXDRIdrawable *texOffsetOverride[16];

+    GLuint lastTexOffsetOverride;

+#endif

+

+    unsigned char glx_enable_bits[__GLX_EXT_BYTES];

+};

+

+struct __GLXDRIcontext {

+    __GLXcontext base;

+    __DRIcontext *driContext;

+    XID hwContextID;

+};

+

+struct __GLXDRIdrawable {

+    __GLXdrawable base;

+    __DRIdrawable *driDrawable;

+

+    /* Pulled in from old __GLXpixmap */

+#ifdef __DRI_TEX_OFFSET

+    GLint texname;

+    __GLXDRIcontext *ctx;

+    unsigned long long offset;

+    DamagePtr pDamage;

+#endif

+};

+

+static void

+__glXDRIleaveServer(GLboolean rendering)

+{

+    int i;

+

+    for (i = 0; rendering && i < screenInfo.numScreens; i++) {

+	__GLXDRIscreen * const screen =

+	    (__GLXDRIscreen *) glxGetScreen(screenInfo.screens[i]);

+	GLuint lastOverride = screen->lastTexOffsetOverride;

+

+	if (lastOverride) {

+	    __GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;

+	    int j;

+

+	    for (j = 0; j < lastOverride; j++) {

+		__GLXDRIdrawable *pGlxPix = texOffsetOverride[j];

+

+		if (pGlxPix && pGlxPix->texname) {

+		    pGlxPix->offset =

+			screen->texOffsetStart((PixmapPtr)pGlxPix->base.pDraw);

+		}

+	    }

+	}

+    }

+

+    DRIBlockHandler(NULL, NULL, NULL);

+

+    for (i = 0; rendering && i < screenInfo.numScreens; i++) {

+	__GLXDRIscreen * const screen =

+	    (__GLXDRIscreen *) glxGetScreen(screenInfo.screens[i]);

+	GLuint lastOverride = screen->lastTexOffsetOverride;

+

+	if (lastOverride) {

+	    __GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;

+	    int j;

+

+	    for (j = 0; j < lastOverride; j++) {

+		__GLXDRIdrawable *pGlxPix = texOffsetOverride[j];

+

+		if (pGlxPix && pGlxPix->texname) {

+		    screen->texOffset->setTexOffset(pGlxPix->ctx->driContext,

+						    pGlxPix->texname,

+						    pGlxPix->offset,

+						    pGlxPix->base.pDraw->depth,

+						    ((PixmapPtr)pGlxPix->base.pDraw)->devKind);

+		}

+	    }

+	}

+    }

+}

+    

+static void

+__glXDRIenterServer(GLboolean rendering)

+{

+    int i;

+

+    for (i = 0; rendering && i < screenInfo.numScreens; i++) {

+	__GLXDRIscreen * const screen = (__GLXDRIscreen *)

+	    glxGetScreen(screenInfo.screens[i]);

+

+	if (screen->lastTexOffsetOverride) {

+	    CALL_Flush(GET_DISPATCH(), ());

+	    break;

+	}

+    }

+

+    DRIWakeupHandler(NULL, 0, NULL);

+}

+

+

+static void

+__glXDRIdoReleaseTexImage(__GLXDRIscreen *screen, __GLXDRIdrawable *drawable)

+{

+    GLuint lastOverride = screen->lastTexOffsetOverride;

+

+    if (lastOverride) {

+	__GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;

+	int i;

+

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

+	    if (texOffsetOverride[i] == drawable) {

+		if (screen->texOffsetFinish)

+		    screen->texOffsetFinish((PixmapPtr)drawable->base.pDraw);

+

+		texOffsetOverride[i] = NULL;

+

+		if (i + 1 == lastOverride) {

+		    lastOverride = 0;

+

+		    while (i--) {

+			if (texOffsetOverride[i]) {

+			    lastOverride = i + 1;

+			    break;

+			}

+		    }

+

+		    screen->lastTexOffsetOverride = lastOverride;

+

+		    break;

+		}

+	    }

+	}

+    }

+}

+

+

+static void

+__glXDRIdrawableDestroy(__GLXdrawable *drawable)

+{

+    __GLXDRIdrawable *private = (__GLXDRIdrawable *) drawable;

+    __GLXDRIscreen *screen;

+    int i;

+

+    for (i = 0; i < screenInfo.numScreens; i++) {

+	screen = (__GLXDRIscreen *) glxGetScreen(screenInfo.screens[i]);

+	__glXDRIdoReleaseTexImage(screen, private);

+    }

+

+    /* If the X window was destroyed, the dri DestroyWindow hook will

+     * aready have taken care of this, so only call if pDraw isn't NULL. */

+    if (drawable->pDraw != NULL) {

+	screen = (__GLXDRIscreen *) glxGetScreen(drawable->pDraw->pScreen);

+	(*screen->core->destroyDrawable)(private->driDrawable);

+

+	__glXenterServer(GL_FALSE);

+	DRIDestroyDrawable(drawable->pDraw->pScreen,

+			   serverClient, drawable->pDraw);

+	__glXleaveServer(GL_FALSE);

+    }

+

+    __glXDrawableRelease(drawable);

+

+    xfree(private);

+}

+

+static GLboolean

+__glXDRIdrawableSwapBuffers(__GLXdrawable *basePrivate)

+{

+    __GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;

+    __GLXDRIscreen *screen =

+	(__GLXDRIscreen *) glxGetScreen(basePrivate->pDraw->pScreen);

+

+    (*screen->core->swapBuffers)(private->driDrawable);

+

+    return TRUE;

+}

+

+

+static int

+__glXDRIdrawableSwapInterval(__GLXdrawable *baseDrawable, int interval)

+{

+    __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseDrawable;

+    __GLXDRIscreen *screen =

+	(__GLXDRIscreen *) glxGetScreen(baseDrawable->pDraw->pScreen);

+

+    if (screen->swapControl)

+	screen->swapControl->setSwapInterval(draw->driDrawable, interval);

+

+    return 0;

+}

+

+

+static void

+__glXDRIdrawableCopySubBuffer(__GLXdrawable *basePrivate,

+			       int x, int y, int w, int h)

+{

+    __GLXDRIdrawable *private = (__GLXDRIdrawable *) basePrivate;

+    __GLXDRIscreen *screen = (__GLXDRIscreen *)

+	glxGetScreen(basePrivate->pDraw->pScreen);

+

+    if (screen->copySubBuffer)

+	screen->copySubBuffer->copySubBuffer(private->driDrawable, x, y, w, h);

+}

+

+static void

+__glXDRIcontextDestroy(__GLXcontext *baseContext)

+{

+    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;

+    Bool retval;

+

+    screen->core->destroyContext(context->driContext);

+

+    __glXenterServer(GL_FALSE);

+    retval = DRIDestroyContext(baseContext->pGlxScreen->pScreen,

+			       context->hwContextID);

+    __glXleaveServer(GL_FALSE);

+

+    __glXContextDestroy(&context->base);

+    xfree(context);

+}

+

+static int

+__glXDRIcontextMakeCurrent(__GLXcontext *baseContext)

+{

+    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;

+    __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv;

+    __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv;

+

+    return (*screen->core->bindContext)(context->driContext,

+					draw->driDrawable,

+					read->driDrawable);

+}					      

+

+static int

+__glXDRIcontextLoseCurrent(__GLXcontext *baseContext)

+{

+    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;

+

+    return (*screen->core->unbindContext)(context->driContext);

+}

+

+static int

+__glXDRIcontextCopy(__GLXcontext *baseDst, __GLXcontext *baseSrc,

+		    unsigned long mask)

+{

+    __GLXDRIcontext *dst = (__GLXDRIcontext *) baseDst;

+    __GLXDRIcontext *src = (__GLXDRIcontext *) baseSrc;

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) dst->base.pGlxScreen;

+

+    return (*screen->core->copyContext)(dst->driContext,

+					src->driContext, mask);

+}

+

+static int

+__glXDRIcontextForceCurrent(__GLXcontext *baseContext)

+{

+    __GLXDRIcontext *context = (__GLXDRIcontext *) baseContext;

+    __GLXDRIdrawable *draw = (__GLXDRIdrawable *) baseContext->drawPriv;

+    __GLXDRIdrawable *read = (__GLXDRIdrawable *) baseContext->readPriv;

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) context->base.pGlxScreen;

+

+    return (*screen->core->bindContext)(context->driContext,

+					draw->driDrawable,

+					read->driDrawable);

+}

+

+static void

+glxFillAlphaChannel (CARD32 *pixels, CARD32 rowstride, int width, int height)

+{

+    int i;

+    CARD32 *p, *end;

+

+    rowstride /= 4;

+    

+    for (i = 0; i < height; i++)

+    {

+	p = pixels;

+	end = p + width;

+	while (p < end)

+	  *p++ |= 0xFF000000;

+	pixels += rowstride;

+    }

+}

+

+static Bool

+testTexOffset(__GLXDRIscreen * const screen, PixmapPtr pPixmap)

+{

+    Bool ret;

+

+    if (!screen->texOffsetStart || !screen->texOffset)

+	return FALSE;

+

+    __glXenterServer(GL_FALSE);

+    ret = screen->texOffsetStart(pPixmap) != ~0ULL;

+    __glXleaveServer(GL_FALSE);

+

+    return ret;

+}

+

+/*

+ * (sticking this here for lack of a better place)

+ * Known issues with the GLX_EXT_texture_from_pixmap implementation:

+ * - In general we ignore the fbconfig, lots of examples follow

+ * - No fbconfig handling for multiple mipmap levels

+ * - No fbconfig handling for 1D textures

+ * - No fbconfig handling for TEXTURE_TARGET

+ * - No fbconfig exposure of Y inversion state

+ * - No GenerateMipmapEXT support (due to no FBO support)

+ * - No support for anything but 16bpp and 32bpp-sparse pixmaps

+ */

+

+static int

+__glXDRIbindTexImage(__GLXcontext *baseContext,

+		     int buffer,

+		     __GLXdrawable *glxPixmap)

+{

+    RegionPtr	pRegion = NULL;

+    PixmapPtr	pixmap;

+    int		bpp, override = 0, texname;

+    GLenum	format, type;

+    ScreenPtr pScreen = glxPixmap->pDraw->pScreen;

+    __GLXDRIdrawable *driDraw = (__GLXDRIdrawable *) glxPixmap;

+    __GLXDRIscreen * const screen = (__GLXDRIscreen *) glxGetScreen(pScreen);

+

+    CALL_GetIntegerv(GET_DISPATCH(), (glxPixmap->target == GL_TEXTURE_2D ?

+				      GL_TEXTURE_BINDING_2D :

+				      GL_TEXTURE_BINDING_RECTANGLE_NV,

+				      &texname));

+

+    if (!texname)

+	return __glXError(GLXBadContextState);

+

+    pixmap = (PixmapPtr) glxPixmap->pDraw;

+

+    if (testTexOffset(screen, pixmap)) {

+	__GLXDRIdrawable **texOffsetOverride = screen->texOffsetOverride;

+	int i, firstEmpty = 16;

+

+	for (i = 0; i < 16; i++) {

+	    if (texOffsetOverride[i] == driDraw)

+		goto alreadyin; 

+

+	    if (firstEmpty == 16 && !texOffsetOverride[i])

+		firstEmpty = i;

+	}

+

+	if (firstEmpty == 16) {

+	    ErrorF("%s: Failed to register texture offset override\n", __func__);

+	    goto nooverride;

+	}

+

+	if (firstEmpty >= screen->lastTexOffsetOverride)

+	    screen->lastTexOffsetOverride = firstEmpty + 1;

+

+	texOffsetOverride[firstEmpty] = driDraw;

+

+alreadyin:

+	override = 1;

+

+	driDraw->ctx = (__GLXDRIcontext*)baseContext;

+

+	if (texname == driDraw->texname)

+	    return Success;

+

+	driDraw->texname = texname;

+

+	screen->texOffset->setTexOffset(driDraw->ctx->driContext, texname, 0,

+					pixmap->drawable.depth,

+					pixmap->devKind);

+    }

+nooverride:

+

+    if (!driDraw->pDamage) {

+	if (!override) {

+	    driDraw->pDamage = DamageCreate(NULL, NULL, DamageReportNone,

+					    TRUE, pScreen, NULL);

+	    if (!driDraw->pDamage)

+		return BadAlloc;

+

+	    DamageRegister ((DrawablePtr) pixmap, driDraw->pDamage);

+	}

+

+	pRegion = NULL;

+    } else {

+	pRegion = DamageRegion(driDraw->pDamage);

+	if (REGION_NIL(pRegion))

+	    return Success;

+    }

+

+    /* XXX 24bpp packed, 8, etc */

+    if (pixmap->drawable.depth >= 24) {

+	bpp = 4;

+	format = GL_BGRA;

+	type =

+#if X_BYTE_ORDER == X_BIG_ENDIAN

+	    !override ? GL_UNSIGNED_INT_8_8_8_8_REV :

+#endif

+	    GL_UNSIGNED_BYTE;

+    } else {

+	bpp = 2;

+	format = GL_RGB;

+	type = GL_UNSIGNED_SHORT_5_6_5;

+    }

+

+    if (pRegion == NULL)

+    {

+	void *data = NULL;

+

+	if (!override) {

+	    unsigned pitch = PixmapBytePad(pixmap->drawable.width,

+					   pixmap->drawable.depth); 

+

+	    data = xalloc(pitch * pixmap->drawable.height);

+

+	    __glXenterServer(GL_FALSE);

+	    pScreen->GetImage(&pixmap->drawable, 0 /*pixmap->drawable.x*/,

+			      0 /*pixmap->drawable.y*/, pixmap->drawable.width,

+			      pixmap->drawable.height, ZPixmap, ~0, data);

+	    __glXleaveServer(GL_FALSE);

+

+	    if (pixmap->drawable.depth == 24)

+		glxFillAlphaChannel(data,

+				    pitch,

+				    pixmap->drawable.width,

+				    pixmap->drawable.height);

+

+	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH,

+					       pitch / bpp) );

+	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS, 0) );

+	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS, 0) );

+	}

+

+	CALL_TexImage2D( GET_DISPATCH(),

+			 (glxPixmap->target,

+			  0,

+			  bpp == 4 ? 4 : 3,

+			  pixmap->drawable.width,

+			  pixmap->drawable.height,

+			  0,

+			  format,

+			  type,

+			  data) );

+

+	xfree(data);

+    } else if (!override) {

+        int i, numRects;

+	BoxPtr p;

+

+	numRects = REGION_NUM_RECTS (pRegion);

+	p = REGION_RECTS (pRegion);

+

+	CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS, 0) );

+	CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS, 0) );

+

+	for (i = 0; i < numRects; i++)

+	{

+	    unsigned pitch = PixmapBytePad(p[i].x2 - p[i].x1,

+					   pixmap->drawable.depth);

+	    void *data = xalloc(pitch * (p[i].y2 - p[i].y1));

+

+	    __glXenterServer(GL_FALSE);

+	    pScreen->GetImage(&pixmap->drawable, /*pixmap->drawable.x +*/ p[i].x1,

+			      /*pixmap->drawable.y*/ + p[i].y1, p[i].x2 - p[i].x1,

+			      p[i].y2 - p[i].y1, ZPixmap, ~0, data);

+	    __glXleaveServer(GL_FALSE);

+

+	    if (pixmap->drawable.depth == 24)

+		glxFillAlphaChannel(data,

+				    pitch,

+				    p[i].x2 - p[i].x1,

+				    p[i].y2 - p[i].y1);

+

+	    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH,

+					       pitch / bpp) );

+

+	    CALL_TexSubImage2D( GET_DISPATCH(),

+				(glxPixmap->target,

+				 0,

+				 p[i].x1, p[i].y1,

+				 p[i].x2 - p[i].x1, p[i].y2 - p[i].y1,

+				 format,

+				 type,

+				 data) );

+

+	    xfree(data);

+	}

+    }

+

+    if (!override)

+	DamageEmpty(driDraw->pDamage);

+

+    return Success;

+}

+

+static int

+__glXDRIreleaseTexImage(__GLXcontext *baseContext,

+			int buffer,

+			__GLXdrawable *pixmap)

+{

+    __GLXDRIscreen *screen =

+	(__GLXDRIscreen *) glxGetScreen(pixmap->pDraw->pScreen);

+    __GLXDRIdrawable *drawable = (__GLXDRIdrawable *) pixmap;

+

+    __glXDRIdoReleaseTexImage(screen, drawable);

+

+    return Success;

+}

+

+static __GLXtextureFromPixmap __glXDRItextureFromPixmap = {

+    __glXDRIbindTexImage,

+    __glXDRIreleaseTexImage

+};

+

+static void

+__glXDRIscreenDestroy(__GLXscreen *baseScreen)

+{

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;

+

+    screen->core->destroyScreen(screen->driScreen);

+

+    dlclose(screen->driver);

+

+    __glXScreenDestroy(baseScreen);

+

+    xfree(screen);

+}

+

+static __GLXcontext *

+__glXDRIscreenCreateContext(__GLXscreen *baseScreen,

+			    __GLXconfig *glxConfig,

+			    __GLXcontext *baseShareContext)

+{

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) baseScreen;

+    __GLXDRIcontext *context, *shareContext;

+    __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig;

+    VisualPtr visual;

+    int i;

+    GLboolean retval;

+    __DRIcontext *driShare;

+    drm_context_t hwContext;

+    ScreenPtr pScreen = baseScreen->pScreen;

+

+    shareContext = (__GLXDRIcontext *) baseShareContext;

+    if (shareContext)

+	driShare = shareContext->driContext;

+    else

+	driShare = NULL;

+

+    if (baseShareContext && baseShareContext->isDirect)

+        return NULL;

+

+    context = xcalloc(1, sizeof *context);

+    if (context == NULL)

+	return NULL;

+

+    context->base.destroy           = __glXDRIcontextDestroy;

+    context->base.makeCurrent       = __glXDRIcontextMakeCurrent;

+    context->base.loseCurrent       = __glXDRIcontextLoseCurrent;

+    context->base.copy              = __glXDRIcontextCopy;

+    context->base.forceCurrent      = __glXDRIcontextForceCurrent;

+

+    context->base.textureFromPixmap = &__glXDRItextureFromPixmap;

+    /* Find the requested X visual */

+    visual = pScreen->visuals;

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

+	if (visual->vid == glxConfig->visualID)

+	    break;

+    if (i == pScreen->numVisuals)

+	return NULL;

+

+    context->hwContextID = FakeClientID(0);

+

+    __glXenterServer(GL_FALSE);

+    retval = DRICreateContext(baseScreen->pScreen, visual,

+			      context->hwContextID, &hwContext);

+    __glXleaveServer(GL_FALSE);

+

+    if (!retval)

+    	return NULL;

+

+    context->driContext =

+	screen->legacy->createNewContext(screen->driScreen,

+					 config->driConfig,

+					 0, /* render type */

+					 driShare,

+					 hwContext,

+					 context);

+

+    if (context->driContext == NULL) {

+    	__glXenterServer(GL_FALSE);

+	retval = DRIDestroyContext(baseScreen->pScreen, context->hwContextID);

+    	__glXleaveServer(GL_FALSE);

+	xfree(context);

+	return NULL;

+    }

+

+    return &context->base;

+}

+

+static __GLXdrawable *

+__glXDRIscreenCreateDrawable(__GLXscreen *screen,

+			     DrawablePtr pDraw,

+			     int type,

+			     XID drawId,

+			     __GLXconfig *glxConfig)

+{

+    __GLXDRIscreen *driScreen = (__GLXDRIscreen *) screen;

+    __GLXDRIconfig *config = (__GLXDRIconfig *) glxConfig;

+    __GLXDRIdrawable *private;

+    GLboolean retval;

+    drm_drawable_t hwDrawable;

+

+    private = xcalloc(1, sizeof *private);

+    if (private == NULL)

+	return NULL;

+

+    if (!__glXDrawableInit(&private->base, screen,

+			   pDraw, type, drawId, glxConfig)) {

+        xfree(private);

+	return NULL;

+    }

+

+    private->base.destroy       = __glXDRIdrawableDestroy;

+    private->base.swapBuffers   = __glXDRIdrawableSwapBuffers;

+    private->base.copySubBuffer = __glXDRIdrawableCopySubBuffer;

+    private->base.waitX		= NULL;

+    private->base.waitGL	= NULL;

+

+    __glXenterServer(GL_FALSE);

+    retval = DRICreateDrawable(screen->pScreen, serverClient,

+			       pDraw, &hwDrawable);

+    __glXleaveServer(GL_FALSE);

+

+    if (!retval) {

+    	xfree(private);

+    	return NULL;

+    }

+

+    /* The last argument is 'attrs', which is used with pbuffers which

+     * we currently don't support. */

+

+    private->driDrawable =

+	(driScreen->legacy->createNewDrawable)(driScreen->driScreen,

+					       config->driConfig,

+					       hwDrawable, 0, NULL, private);

+

+    if (private->driDrawable == NULL) {

+	__glXenterServer(GL_FALSE);

+	DRIDestroyDrawable(screen->pScreen, serverClient, pDraw);

+	__glXleaveServer(GL_FALSE);

+	xfree(private);

+	return NULL;

+    }

+

+    return &private->base;

+}

+

+static GLboolean

+getDrawableInfo(__DRIdrawable *driDrawable,

+		unsigned int *index, unsigned int *stamp,

+		int *x, int *y, int *width, int *height,

+		int *numClipRects, drm_clip_rect_t **ppClipRects,

+		int *backX, int *backY,

+		int *numBackClipRects, drm_clip_rect_t **ppBackClipRects,

+		void *data)

+{

+    __GLXDRIdrawable *drawable = data;

+    ScreenPtr pScreen;

+    drm_clip_rect_t *pClipRects, *pBackClipRects;

+    GLboolean retval;

+    size_t size;

+

+    /* If the X window has been destroyed, give up here. */

+    if (drawable->base.pDraw == NULL)

+	return GL_FALSE;

+

+    pScreen = drawable->base.pDraw->pScreen;

+    __glXenterServer(GL_FALSE);

+    retval = DRIGetDrawableInfo(pScreen, drawable->base.pDraw, index, stamp,

+				x, y, width, height,

+				numClipRects, &pClipRects,

+				backX, backY,

+				numBackClipRects, &pBackClipRects);

+    __glXleaveServer(GL_FALSE);

+

+    if (retval && *numClipRects > 0) {

+	size = sizeof (drm_clip_rect_t) * *numClipRects;

+	*ppClipRects = xalloc (size);

+

+	/* Clip cliprects to screen dimensions (redirected windows) */

+	if (*ppClipRects != NULL) {

+	    int i, j;

+

+	    for (i = 0, j = 0; i < *numClipRects; i++) {

+	        (*ppClipRects)[j].x1 = max(pClipRects[i].x1, 0);

+		(*ppClipRects)[j].y1 = max(pClipRects[i].y1, 0);

+		(*ppClipRects)[j].x2 = min(pClipRects[i].x2, pScreen->width);

+		(*ppClipRects)[j].y2 = min(pClipRects[i].y2, pScreen->height);

+

+		if ((*ppClipRects)[j].x1 < (*ppClipRects)[j].x2 &&

+		    (*ppClipRects)[j].y1 < (*ppClipRects)[j].y2) {

+		    j++;

+		}

+	    }

+

+	    if (*numClipRects != j) {

+		*numClipRects = j;

+		*ppClipRects = xrealloc (*ppClipRects,

+					 sizeof (drm_clip_rect_t) *

+					 *numClipRects);

+	    }

+	} else

+	    *numClipRects = 0;

+    }

+    else {

+      *ppClipRects = NULL;

+      *numClipRects = 0;

+    }

+      

+    if (retval && *numBackClipRects > 0) {

+	size = sizeof (drm_clip_rect_t) * *numBackClipRects;

+	*ppBackClipRects = xalloc (size);

+	if (*ppBackClipRects != NULL)

+	    memcpy (*ppBackClipRects, pBackClipRects, size);

+	else

+	    *numBackClipRects = 0;

+    }

+    else {

+      *ppBackClipRects = NULL;

+      *numBackClipRects = 0;

+    }

+

+    return retval;

+}

+

+static void __glXReportDamage(__DRIdrawable *driDraw,

+			      int x, int y,

+			      drm_clip_rect_t *rects, int num_rects,

+			      GLboolean front_buffer,

+			      void *data)

+{

+    __GLXDRIdrawable *drawable = data;

+    DrawablePtr pDraw = drawable->base.pDraw;

+    RegionRec region;

+

+    __glXenterServer(GL_FALSE);

+

+    REGION_INIT(pDraw->pScreen, &region, (BoxPtr) rects, num_rects);

+    REGION_TRANSLATE(pScreen, &region, pDraw->x, pDraw->y);

+    DamageRegionAppend(pDraw, &region);

+    /* This is wrong, this needs a seperate function. */

+    DamageRegionProcessPending(pDraw);

+    REGION_UNINIT(pDraw->pScreen, &region);

+

+    __glXleaveServer(GL_FALSE);

+}

+

+static const __DRIgetDrawableInfoExtension getDrawableInfoExtension = {

+    { __DRI_GET_DRAWABLE_INFO, __DRI_GET_DRAWABLE_INFO_VERSION },

+    getDrawableInfo

+};

+

+static const __DRIdamageExtension damageExtension = {

+    { __DRI_DAMAGE, __DRI_DAMAGE_VERSION },

+    __glXReportDamage,

+};

+

+static const __DRIextension *loader_extensions[] = {

+    &systemTimeExtension.base,

+    &getDrawableInfoExtension.base,

+    &damageExtension.base,

+    NULL

+};

+

+

+

+static const char dri_driver_path[] = DRI_DRIVER_PATH;

+

+static Bool

+glxDRIEnterVT (int index, int flags)

+{

+    __GLXDRIscreen *screen = (__GLXDRIscreen *) 

+	glxGetScreen(screenInfo.screens[index]);

+

+    LogMessage(X_INFO, "AIGLX: Resuming AIGLX clients after VT switch\n");

+

+    if (!(*screen->enterVT) (index, flags))

+	return FALSE;

+    

+    glxResumeClients();

+

+    return TRUE;

+}

+

+static void

+glxDRILeaveVT (int index, int flags)

+{

+    __GLXDRIscreen *screen = (__GLXDRIscreen *)

+	glxGetScreen(screenInfo.screens[index]);

+

+    LogMessage(X_INFO, "AIGLX: Suspending AIGLX clients for VT switch\n");

+

+    glxSuspendClients();

+

+    return (*screen->leaveVT) (index, flags);

+}

+

+static void

+initializeExtensions(__GLXDRIscreen *screen)

+{

+    const __DRIextension **extensions;

+    int i;

+

+    extensions = screen->core->getExtensions(screen->driScreen);

+

+    for (i = 0; extensions[i]; i++) {

+#ifdef __DRI_READ_DRAWABLE

+	if (strcmp(extensions[i]->name, __DRI_READ_DRAWABLE) == 0) {

+	    __glXEnableExtension(screen->glx_enable_bits,

+				 "GLX_SGI_make_current_read");

+	    

+	    LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_make_current_read\n");

+	}

+#endif

+

+#ifdef __DRI_COPY_SUB_BUFFER

+	if (strcmp(extensions[i]->name, __DRI_COPY_SUB_BUFFER) == 0) {

+	    screen->copySubBuffer = (__DRIcopySubBufferExtension *) extensions[i];

+	    __glXEnableExtension(screen->glx_enable_bits,

+				 "GLX_MESA_copy_sub_buffer");

+	    

+	    LogMessage(X_INFO, "AIGLX: enabled GLX_MESA_copy_sub_buffer\n");

+	}

+#endif

+

+#ifdef __DRI_SWAP_CONTROL

+	if (strcmp(extensions[i]->name, __DRI_SWAP_CONTROL) == 0) {

+	    screen->swapControl = (__DRIswapControlExtension *) extensions[i];

+	    __glXEnableExtension(screen->glx_enable_bits,

+				 "GLX_SGI_swap_control");

+	    __glXEnableExtension(screen->glx_enable_bits,

+				 "GLX_MESA_swap_control");

+	    

+	    LogMessage(X_INFO, "AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control\n");

+	}

+#endif

+

+#ifdef __DRI_TEX_OFFSET

+	if (strcmp(extensions[i]->name, __DRI_TEX_OFFSET) == 0) {

+	    screen->texOffset = (__DRItexOffsetExtension *) extensions[i];

+	    LogMessage(X_INFO, "AIGLX: enabled GLX_texture_from_pixmap with driver support\n");

+	}

+#endif

+	/* Ignore unknown extensions */

+    }

+}

+    

+extern __GLXconfig *

+glxConvertConfigs(const __DRIcoreExtension *core, const __DRIconfig **configs);

+

+static __GLXscreen *

+__glXDRIscreenProbe(ScreenPtr pScreen)

+{

+    drm_handle_t hSAREA;

+    drmAddress pSAREA = NULL;

+    char *BusID;

+    __DRIversion   ddx_version;

+    __DRIversion   dri_version;

+    __DRIversion   drm_version;

+    __DRIframebuffer  framebuffer;

+    int   fd = -1;

+    int   status;

+    drm_magic_t magic;

+    drmVersionPtr version;

+    int newlyopened;

+    char *driverName;

+    drm_handle_t  hFB;

+    int        junk;

+    __GLXDRIscreen *screen;

+    char filename[128];

+    Bool isCapable;

+    size_t buffer_size;

+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];

+    const __DRIconfig **driConfigs;

+    const __DRIextension **extensions;

+    int i;

+

+    if (!xf86LoaderCheckSymbol("DRIQueryDirectRenderingCapable") ||

+	!DRIQueryDirectRenderingCapable(pScreen, &isCapable) ||

+	!isCapable) {

+	LogMessage(X_INFO,

+		   "AIGLX: Screen %d is not DRI capable\n", pScreen->myNum);

+	return NULL;

+    }

+

+    screen = xcalloc(1, sizeof *screen);

+    if (screen == NULL)

+      return NULL;

+

+    screen->base.destroy        = __glXDRIscreenDestroy;

+    screen->base.createContext  = __glXDRIscreenCreateContext;

+    screen->base.createDrawable = __glXDRIscreenCreateDrawable;

+    screen->base.swapInterval   = __glXDRIdrawableSwapInterval;

+    screen->base.pScreen       = pScreen;

+

+    __glXInitExtensionEnableBits(screen->glx_enable_bits);

+

+    /* DRI protocol version. */

+    dri_version.major = XF86DRI_MAJOR_VERSION;

+    dri_version.minor = XF86DRI_MINOR_VERSION;

+    dri_version.patch = XF86DRI_PATCH_VERSION;

+

+    if (!DRIOpenConnection(pScreen, &hSAREA, &BusID)) {

+	LogMessage(X_ERROR, "AIGLX error: DRIOpenConnection failed\n");

+	goto handle_error;

+    }

+

+    fd = drmOpenOnce(NULL, BusID, &newlyopened);

+

+    if (fd < 0) {

+	LogMessage(X_ERROR, "AIGLX error: drmOpenOnce failed (%s)\n",

+		   strerror(-fd));

+	goto handle_error;

+    }

+

+    if (drmGetMagic(fd, &magic)) {

+	LogMessage(X_ERROR, "AIGLX error: drmGetMagic failed\n");

+	goto handle_error;

+    }

+

+    version = drmGetVersion(fd);

+    if (version) {

+	drm_version.major = version->version_major;

+	drm_version.minor = version->version_minor;

+	drm_version.patch = version->version_patchlevel;

+	drmFreeVersion(version);

+    }

+    else {

+	drm_version.major = -1;

+	drm_version.minor = -1;

+	drm_version.patch = -1;

+    }

+

+    if (newlyopened && !DRIAuthConnection(pScreen, magic)) {

+	LogMessage(X_ERROR, "AIGLX error: DRIAuthConnection failed\n");

+	goto handle_error;

+    }

+

+    /* Get device name (like "tdfx") and the ddx version numbers.

+     * We'll check the version in each DRI driver's "createNewScreen"

+     * function. */

+    if (!DRIGetClientDriverName(pScreen,

+				&ddx_version.major,

+				&ddx_version.minor,

+				&ddx_version.patch,

+				&driverName)) {

+	LogMessage(X_ERROR, "AIGLX error: DRIGetClientDriverName failed\n");

+	goto handle_error;

+    }

+

+    snprintf(filename, sizeof filename, "%s/%s_dri.so",

+             dri_driver_path, driverName);

+

+    screen->driver = dlopen(filename, RTLD_LAZY | RTLD_LOCAL);

+    if (screen->driver == NULL) {

+	LogMessage(X_ERROR, "AIGLX error: dlopen of %s failed (%s)\n",

+		   filename, dlerror());

+        goto handle_error;

+    }

+

+    extensions = dlsym(screen->driver, __DRI_DRIVER_EXTENSIONS);

+    if (extensions == NULL) {

+	LogMessage(X_ERROR, "AIGLX error: %s exports no extensions (%s)\n",

+		   driverName, dlerror());

+	goto handle_error;

+    }

+    

+    for (i = 0; extensions[i]; i++) {

+	if (strcmp(extensions[i]->name, __DRI_CORE) == 0 &&

+	    extensions[i]->version >= __DRI_CORE_VERSION) {

+		screen->core = (__DRIcoreExtension *) extensions[i];

+	}

+

+	if (strcmp(extensions[i]->name, __DRI_LEGACY) == 0 &&

+	    extensions[i]->version >= __DRI_LEGACY_VERSION) {

+		screen->legacy = (__DRIlegacyExtension *) extensions[i];

+	}

+    }

+

+    if (screen->core == NULL || screen->legacy == NULL) {

+	LogMessage(X_ERROR,

+		   "AIGLX error: %s does not export required DRI extension\n",

+		   driverName);

+	goto handle_error;

+    }

+

+    /*

+     * Get device-specific info.  pDevPriv will point to a struct

+     * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) that

+     * has information about the screen size, depth, pitch, ancilliary

+     * buffers, DRM mmap handles, etc.

+     */

+    if (!DRIGetDeviceInfo(pScreen, &hFB, &junk,

+			  &framebuffer.size, &framebuffer.stride,

+			  &framebuffer.dev_priv_size, &framebuffer.dev_priv)) {

+	LogMessage(X_ERROR, "AIGLX error: XF86DRIGetDeviceInfo failed\n");

+	goto handle_error;

+    }

+

+    framebuffer.width = pScreen->width;

+    framebuffer.height = pScreen->height;

+

+    /* Map the framebuffer region. */

+    status = drmMap(fd, hFB, framebuffer.size, 

+		    (drmAddressPtr)&framebuffer.base);

+    if (status != 0) {

+	LogMessage(X_ERROR, "AIGLX error: drmMap of framebuffer failed (%s)\n",

+		   strerror(-status));

+	goto handle_error;

+    }

+

+    /* Map the SAREA region.  Further mmap regions may be setup in

+     * each DRI driver's "createNewScreen" function.

+     */

+    status = drmMap(fd, hSAREA, SAREA_MAX, &pSAREA);

+    if (status != 0) {

+	LogMessage(X_ERROR, "AIGLX error: drmMap of SAREA failed (%s)\n",

+		   strerror(-status));

+	goto handle_error;

+    }

+    

+    screen->driScreen =

+	(*screen->legacy->createNewScreen)(pScreen->myNum,

+					   &ddx_version,

+					   &dri_version,

+					   &drm_version,

+					   &framebuffer,

+					   pSAREA,

+					   fd,

+					   loader_extensions,

+					   &driConfigs,

+					   screen);

+

+    if (screen->driScreen == NULL) {

+	LogMessage(X_ERROR,

+		   "AIGLX error: Calling driver entry point failed\n");

+	goto handle_error;

+    }

+

+    screen->base.fbconfigs = glxConvertConfigs(screen->core, driConfigs);

+

+    initializeExtensions(screen);

+

+    DRIGetTexOffsetFuncs(pScreen, &screen->texOffsetStart,

+			 &screen->texOffsetFinish);

+

+    __glXScreenInit(&screen->base, pScreen);

+

+    /* The first call simply determines the length of the extension string.

+     * This allows us to allocate some memory to hold the extension string,

+     * but it requires that we call __glXGetExtensionString a second time.

+     */

+    buffer_size = __glXGetExtensionString(screen->glx_enable_bits, NULL);

+    if (buffer_size > 0) {

+	if (screen->base.GLXextensions != NULL) {

+	    xfree(screen->base.GLXextensions);

+	}

+

+	screen->base.GLXextensions = xnfalloc(buffer_size);

+	(void) __glXGetExtensionString(screen->glx_enable_bits, 

+				       screen->base.GLXextensions);

+    }

+

+    __glXsetEnterLeaveServerFuncs(__glXDRIenterServer, __glXDRIleaveServer);

+

+    screen->enterVT = pScrn->EnterVT;

+    pScrn->EnterVT = glxDRIEnterVT;

+    screen->leaveVT = pScrn->LeaveVT;

+    pScrn->LeaveVT = glxDRILeaveVT;

+

+    LogMessage(X_INFO,

+	       "AIGLX: Loaded and initialized %s\n", filename);

+

+    return &screen->base;

+

+ handle_error:

+    if (pSAREA != NULL)

+	drmUnmap(pSAREA, SAREA_MAX);

+

+    if (framebuffer.base != NULL)

+	drmUnmap((drmAddress)framebuffer.base, framebuffer.size);

+

+    if (fd >= 0)

+	drmCloseOnce(fd);

+

+    DRICloseConnection(pScreen);

+

+    if (screen->driver)

+        dlclose(screen->driver);

+

+    xfree(screen);

+

+    LogMessage(X_ERROR, "AIGLX: reverting to software rendering\n");

+

+    return NULL;

+}

+

+_X_EXPORT __GLXprovider __glXDRIProvider = {

+    __glXDRIscreenProbe,

+    "DRI",

+    NULL

+};

diff --git a/xorg-server/glx/glxserver.h b/xorg-server/glx/glxserver.h
index 49e6ab30c..87d7c3945 100644
--- a/xorg-server/glx/glxserver.h
+++ b/xorg-server/glx/glxserver.h
@@ -1,256 +1,252 @@
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#ifndef _GLX_server_h_
-#define _GLX_server_h_
-
-/*
- * 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.
- */
-
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include <X11/Xmd.h>
-#include <misc.h>
-#include <dixstruct.h>
-#include <pixmapstr.h>
-#include <gcstruct.h>
-#include <extnsionst.h>
-#include <resource.h>
-#include <scrnintstr.h>
-
-/*
-** The X header misc.h defines these math functions.
-*/
-#undef abs
-#undef fabs
-
-#define GL_GLEXT_PROTOTYPES /* we want prototypes */
-#include <GL/gl.h>
-#include <GL/glext.h>
-#include <GL/glxproto.h>
-
-/* For glxscreens.h */
-typedef struct __GLXdrawable __GLXdrawable;
-typedef struct __GLXcontext __GLXcontext;
-
-#include "glxscreens.h"
-#include "glxdrawable.h"
-#include "glxcontext.h"
-
-
-#define GLX_SERVER_MAJOR_VERSION 1
-#define GLX_SERVER_MINOR_VERSION 2
-
-#ifndef True
-#define True 1
-#endif
-#ifndef False
-#define False 0
-#endif
-
-/*
-** GLX resources.
-*/
-typedef XID GLXContextID;
-typedef XID GLXPixmap;
-typedef XID GLXDrawable;
-
-typedef struct __GLXclientStateRec __GLXclientState;
-
-extern __GLXscreen *glxGetScreen(ScreenPtr pScreen);
-extern __GLXclientState *glxGetClient(ClientPtr pClient);
-
-/************************************************************************/
-
-void GlxExtensionInit(void);
-
-void GlxSetVisualConfigs(int nconfigs, 
-                         void *configs, void **privates);
-
-void __glXScreenInitVisuals(__GLXscreen *screen);
-
-/*
-** The last context used (from the server's persective) is cached.
-*/
-extern __GLXcontext *__glXLastContext;
-extern __GLXcontext *__glXForceCurrent(__GLXclientState*, GLXContextTag, int*);
-
-extern ClientPtr __pGlxClient;
-
-int __glXError(int error);
-
-/*
-** Macros to set, unset, and retrieve the flag that says whether a context
-** has unflushed commands.
-*/
-#define __GLX_NOTE_UNFLUSHED_CMDS(glxc) glxc->hasUnflushedCommands = GL_TRUE
-#define __GLX_NOTE_FLUSHED_CMDS(glxc) glxc->hasUnflushedCommands = GL_FALSE
-#define __GLX_HAS_UNFLUSHED_CMDS(glxc) (glxc->hasUnflushedCommands)
-
-/************************************************************************/
-
-typedef struct __GLXprovider __GLXprovider;
-struct __GLXprovider {
-    __GLXscreen *(*screenProbe)(ScreenPtr pScreen);
-    const char    *name;
-    __GLXprovider *next;
-};
-
-void GlxPushProvider(__GLXprovider *provider);
-
-enum {
-    GLX_MINIMAL_VISUALS,
-    GLX_TYPICAL_VISUALS,
-    GLX_ALL_VISUALS
-};
-
-void __glXsetEnterLeaveServerFuncs(void (*enter)(GLboolean),
-				   void (*leave)(GLboolean));
-void __glXenterServer(GLboolean rendering);
-void __glXleaveServer(GLboolean rendering);
-
-void glxSuspendClients(void);
-void glxResumeClients(void);
-
-/*
-** State kept per client.
-*/
-struct __GLXclientStateRec {
-    /*
-    ** Whether this structure is currently being used to support a client.
-    */
-    Bool inUse;
-
-    /*
-    ** Buffer for returned data.
-    */
-    GLbyte *returnBuf;
-    GLint returnBufSize;
-
-    /*
-    ** Keep track of large rendering commands, which span multiple requests.
-    */
-    GLint largeCmdBytesSoFar;		/* bytes received so far	*/
-    GLint largeCmdBytesTotal;		/* total bytes expected		*/
-    GLint largeCmdRequestsSoFar;	/* requests received so far	*/
-    GLint largeCmdRequestsTotal;	/* total requests expected	*/
-    GLbyte *largeCmdBuf;
-    GLint largeCmdBufSize;
-
-    /*
-    ** Keep a list of all the contexts that are current for this client's
-    ** threads.
-    */
-    __GLXcontext **currentContexts;
-    GLint numCurrentContexts;
-
-    /* Back pointer to X client record */
-    ClientPtr client;
-
-    int GLClientmajorVersion;
-    int GLClientminorVersion;
-    char *GLClientextensions;
-};
-
-/************************************************************************/
-
-/*
-** Dispatch tables.
-*/
-typedef void (*__GLXdispatchRenderProcPtr)(GLbyte *);
-typedef int (*__GLXdispatchSingleProcPtr)(__GLXclientState *, GLbyte *);
-typedef int (*__GLXdispatchVendorPrivProcPtr)(__GLXclientState *, GLbyte *);
-
-/*
- * Dispatch for GLX commands.
- */
-typedef int (*__GLXprocPtr)(__GLXclientState *, char *pc);
-
-/*
- * Tables for computing the size of each rendering command.
- */
-typedef int (*gl_proto_size_func)(const GLbyte *, Bool);
-
-typedef struct {
-    int bytes;
-    gl_proto_size_func varsize;
-} __GLXrenderSizeData;
-
-/************************************************************************/
-
-/*
-** X resources.
-*/
-extern RESTYPE __glXContextRes;
-extern RESTYPE __glXClientRes;
-extern RESTYPE __glXPixmapRes;
-extern RESTYPE __glXDrawableRes;
-
-/************************************************************************/
-
-/*
-** Prototypes.
-*/
-
-extern char *__glXcombine_strings(const char *, const char *);
-
-/*
-** Routines for sending swapped replies.
-*/
-
-extern void __glXSwapMakeCurrentReply(ClientPtr client,
-				      xGLXMakeCurrentReply *reply);
-extern void __glXSwapIsDirectReply(ClientPtr client,
-				   xGLXIsDirectReply *reply);
-extern void __glXSwapQueryVersionReply(ClientPtr client,
-				       xGLXQueryVersionReply *reply);
-extern void __glXSwapQueryContextInfoEXTReply(ClientPtr client,
-					      xGLXQueryContextInfoEXTReply *reply,
-					      int *buf);
-extern void __glXSwapGetDrawableAttributesReply(ClientPtr client,
-						xGLXGetDrawableAttributesReply *reply, CARD32 *buf);
-extern void glxSwapQueryExtensionsStringReply(ClientPtr client,
-				xGLXQueryExtensionsStringReply *reply, char *buf);
-extern void glxSwapQueryServerStringReply(ClientPtr client,
-				xGLXQueryServerStringReply *reply, char *buf);
-
-
-/*
- * Routines for computing the size of variably-sized rendering commands.
- */
-
-extern int __glXTypeSize(GLenum enm);
-extern int __glXImageSize(GLenum format, GLenum type,
-    GLenum target, GLsizei w, GLsizei h, GLsizei d,
-    GLint imageHeight, GLint rowLength, GLint skipImages, GLint skipRows,
-    GLint alignment);
-
-#endif /* !__GLX_server_h__ */
+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#ifndef _GLX_server_h_

+#define _GLX_server_h_

+

+/*

+ * 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.

+ */

+

+#include <X11/X.h>

+#include <X11/Xproto.h>

+#include <X11/Xmd.h>

+#include <misc.h>

+#include <dixstruct.h>

+#include <pixmapstr.h>

+#include <gcstruct.h>

+#include <extnsionst.h>

+#include <resource.h>

+#include <scrnintstr.h>

+

+/*

+** The X header misc.h defines these math functions.

+*/

+#undef abs

+#undef fabs

+

+#define GL_GLEXT_PROTOTYPES /* we want prototypes */

+#include <GL/gl.h>

+#include <GL/glext.h>

+#include <GL/glxproto.h>

+

+/* For glxscreens.h */

+typedef struct __GLXdrawable __GLXdrawable;

+typedef struct __GLXcontext __GLXcontext;

+

+#include "glxscreens.h"

+#include "glxdrawable.h"

+#include "glxcontext.h"

+

+#ifndef True

+#define True 1

+#endif

+#ifndef False

+#define False 0

+#endif

+

+/*

+** GLX resources.

+*/

+typedef XID GLXContextID;

+typedef XID GLXPixmap;

+typedef XID GLXDrawable;

+

+typedef struct __GLXclientStateRec __GLXclientState;

+

+extern __GLXscreen *glxGetScreen(ScreenPtr pScreen);

+extern __GLXclientState *glxGetClient(ClientPtr pClient);

+

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

+

+void GlxExtensionInit(void);

+

+void GlxSetVisualConfigs(int nconfigs, 

+                         void *configs, void **privates);

+

+void __glXScreenInitVisuals(__GLXscreen *screen);

+

+/*

+** The last context used (from the server's persective) is cached.

+*/

+extern __GLXcontext *__glXLastContext;

+extern __GLXcontext *__glXForceCurrent(__GLXclientState*, GLXContextTag, int*);

+

+extern ClientPtr __pGlxClient;

+

+int __glXError(int error);

+

+/*

+** Macros to set, unset, and retrieve the flag that says whether a context

+** has unflushed commands.

+*/

+#define __GLX_NOTE_UNFLUSHED_CMDS(glxc) glxc->hasUnflushedCommands = GL_TRUE

+#define __GLX_NOTE_FLUSHED_CMDS(glxc) glxc->hasUnflushedCommands = GL_FALSE

+#define __GLX_HAS_UNFLUSHED_CMDS(glxc) (glxc->hasUnflushedCommands)

+

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

+

+typedef struct __GLXprovider __GLXprovider;

+struct __GLXprovider {

+    __GLXscreen *(*screenProbe)(ScreenPtr pScreen);

+    const char    *name;

+    __GLXprovider *next;

+};

+

+void GlxPushProvider(__GLXprovider *provider);

+

+enum {

+    GLX_MINIMAL_VISUALS,

+    GLX_TYPICAL_VISUALS,

+    GLX_ALL_VISUALS

+};

+

+void __glXsetEnterLeaveServerFuncs(void (*enter)(GLboolean),

+				   void (*leave)(GLboolean));

+void __glXenterServer(GLboolean rendering);

+void __glXleaveServer(GLboolean rendering);

+

+void glxSuspendClients(void);

+void glxResumeClients(void);

+

+/*

+** State kept per client.

+*/

+struct __GLXclientStateRec {

+    /*

+    ** Whether this structure is currently being used to support a client.

+    */

+    Bool inUse;

+

+    /*

+    ** Buffer for returned data.

+    */

+    GLbyte *returnBuf;

+    GLint returnBufSize;

+

+    /*

+    ** Keep track of large rendering commands, which span multiple requests.

+    */

+    GLint largeCmdBytesSoFar;		/* bytes received so far	*/

+    GLint largeCmdBytesTotal;		/* total bytes expected		*/

+    GLint largeCmdRequestsSoFar;	/* requests received so far	*/

+    GLint largeCmdRequestsTotal;	/* total requests expected	*/

+    GLbyte *largeCmdBuf;

+    GLint largeCmdBufSize;

+

+    /*

+    ** Keep a list of all the contexts that are current for this client's

+    ** threads.

+    */

+    __GLXcontext **currentContexts;

+    GLint numCurrentContexts;

+

+    /* Back pointer to X client record */

+    ClientPtr client;

+

+    int GLClientmajorVersion;

+    int GLClientminorVersion;

+    char *GLClientextensions;

+};

+

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

+

+/*

+** Dispatch tables.

+*/

+typedef void (*__GLXdispatchRenderProcPtr)(GLbyte *);

+typedef int (*__GLXdispatchSingleProcPtr)(__GLXclientState *, GLbyte *);

+typedef int (*__GLXdispatchVendorPrivProcPtr)(__GLXclientState *, GLbyte *);

+

+/*

+ * Dispatch for GLX commands.

+ */

+typedef int (*__GLXprocPtr)(__GLXclientState *, char *pc);

+

+/*

+ * Tables for computing the size of each rendering command.

+ */

+typedef int (*gl_proto_size_func)(const GLbyte *, Bool);

+

+typedef struct {

+    int bytes;

+    gl_proto_size_func varsize;

+} __GLXrenderSizeData;

+

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

+

+/*

+** X resources.

+*/

+extern RESTYPE __glXContextRes;

+extern RESTYPE __glXClientRes;

+extern RESTYPE __glXPixmapRes;

+extern RESTYPE __glXDrawableRes;

+

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

+

+/*

+** Prototypes.

+*/

+

+extern char *__glXcombine_strings(const char *, const char *);

+

+/*

+** Routines for sending swapped replies.

+*/

+

+extern void __glXSwapMakeCurrentReply(ClientPtr client,

+				      xGLXMakeCurrentReply *reply);

+extern void __glXSwapIsDirectReply(ClientPtr client,

+				   xGLXIsDirectReply *reply);

+extern void __glXSwapQueryVersionReply(ClientPtr client,

+				       xGLXQueryVersionReply *reply);

+extern void __glXSwapQueryContextInfoEXTReply(ClientPtr client,

+					      xGLXQueryContextInfoEXTReply *reply,

+					      int *buf);

+extern void __glXSwapGetDrawableAttributesReply(ClientPtr client,

+						xGLXGetDrawableAttributesReply *reply, CARD32 *buf);

+extern void glxSwapQueryExtensionsStringReply(ClientPtr client,

+				xGLXQueryExtensionsStringReply *reply, char *buf);

+extern void glxSwapQueryServerStringReply(ClientPtr client,

+				xGLXQueryServerStringReply *reply, char *buf);

+

+

+/*

+ * Routines for computing the size of variably-sized rendering commands.

+ */

+

+extern int __glXTypeSize(GLenum enm);

+extern int __glXImageSize(GLenum format, GLenum type,

+    GLenum target, GLsizei w, GLsizei h, GLsizei d,

+    GLint imageHeight, GLint rowLength, GLint skipImages, GLint skipRows,

+    GLint alignment);

+

+#endif /* !__GLX_server_h__ */