Move dri_util.[ch] and glcontextmodes.[ch] from dri_client to common.

1 files changed, 0 insertions, 1654 deletions

diff --git a/src/mesa/drivers/dri/dri_client/dri_util.c b/src/mesa/drivers/dri/dri_client/dri_util.c
deleted file mode 100644
index 03d92c02f2..0000000000
--- a/src/mesa/drivers/dri/dri_client/dri_util.c
+++ /dev/null
@@ -1,1654 +0,0 @@
-/* $XFree86: xc/lib/GL/dri/dri_util.c,v 1.7 2003/04/28 17:01:25 dawes Exp $ */
-/**
- * \file dri_util.c
- * DRI utility functions.
- *
- * This module acts as glue between GLX and the actual hardware driver.  A DRI
- * driver doesn't really \e have to use any of this - it's optional.  But, some
- * useful stuff is done here that otherwise would have to be duplicated in most
- * drivers.
- * 
- * Basically, these utility functions take care of some of the dirty details of
- * screen initialization, context creation, context binding, DRM setup, etc.
- *
- * These functions are compiled into each DRI driver so libGL.so knows nothing
- * about them.
- *
- * \note
- * When \c DRI_NEW_INTERFACE_ONLY is defined, code is built / not built so
- * that only the "new" libGL-to-driver interfaces are supported.  This breaks
- * backwards compatability.  However, this may be necessary when DRI drivers
- * are built to be used in non-XFree86 environments.
- *
- * \todo There are still some places in the code that need to be wrapped with
- *       \c DRI_NEW_INTERFACE_ONLY.
- */
-
-
-#ifdef GLX_DIRECT_RENDERING
-
-#include <inttypes.h>
-#include <assert.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <X11/Xlibint.h>
-#include <Xext.h>
-#include <extutil.h>
-#include <stdio.h>
-#include "dri_util.h"
-#include "xf86dri.h"
-#include "sarea.h"
-#include "glcontextmodes.h"
-
-/*#define DRI_NEW_INTERFACE_ONLY*/
-
-/**
- * This is used in a couple of places that call \c driCreateNewDrawable.
- */
-static const int empty_attribute_list[1] = { None };
-
-/**
- * Function used to determine if a drawable (window) still exists.  Ideally
- * this function comes from libGL.  With older versions of libGL from XFree86
- * we can fall-back to an internal version.
- * 
- * \sa __driWindowExists __glXWindowExists
- */
-static PFNGLXWINDOWEXISTSPROC window_exists;
-
-typedef Bool (*PFNGLXCREATECONTEXTWITHCONFIGPROC)( Display*, int, int, void *,
-    drmContextPtr );
-
-static PFNGLXCREATECONTEXTWITHCONFIGPROC create_context_with_config;
-
-/**
- * Cached copy of the internal API version used by libGL and the client-side
- * DRI driver.
- */
-static int api_ver = 0;
-
-/* forward declarations */
-static int driQueryFrameTracking( Display * dpy, void * priv,
-    int64_t * sbc, int64_t * missedFrames, float * lastMissedUsage,
-    float * usage );
-
-static void *driCreateNewDrawable(Display *dpy, const __GLcontextModes *modes,
-    GLXDrawable draw, __DRIdrawable *pdraw, int renderType, const int *attrs);
-
-static void driDestroyDrawable(Display *dpy, void *drawablePrivate);
-
-
-
-
-#ifdef not_defined
-static Bool driFeatureOn(const char *name)
-{
-    char *env = getenv(name);
-
-    if (!env) return GL_FALSE;
-    if (!strcasecmp(env, "enable")) return GL_TRUE;
-    if (!strcasecmp(env, "1"))      return GL_TRUE;
-    if (!strcasecmp(env, "on"))     return GL_TRUE;
-    if (!strcasecmp(env, "true"))   return GL_TRUE;
-    if (!strcasecmp(env, "t"))      return GL_TRUE;
-    if (!strcasecmp(env, "yes"))    return GL_TRUE;
-    if (!strcasecmp(env, "y"))      return GL_TRUE;
-
-    return GL_FALSE;
-}
-#endif /* not_defined */
-
-
-/**
- * Print message to \c stderr if the \c LIBGL_DEBUG environment variable
- * is set. 
- * 
- * Is called from the drivers.
- * 
- * \param f \c printf like format string.
- */
-void
-__driUtilMessage(const char *f, ...)
-{
-    va_list args;
-
-    if (getenv("LIBGL_DEBUG")) {
-        fprintf(stderr, "libGL error: \n");
-        va_start(args, f);
-        vfprintf(stderr, f, args);
-        va_end(args);
-        fprintf(stderr, "\n");
-    }
-}
-
-
-/*****************************************************************/
-/** \name Visual utility functions                               */
-/*****************************************************************/
-/*@{*/
-
-#ifndef DRI_NEW_INTERFACE_ONLY
-/**
- * Find a \c __GLcontextModes structure matching the given visual ID.
- * 
- * \param dpy   Display to search for a matching configuration.
- * \param scrn  Screen number on \c dpy to be searched.
- * \param vid   Desired \c VisualID to find.
- *
- * \returns A pointer to a \c __GLcontextModes structure that matches \c vid,
- *          if found, or \c NULL if no match is found.
- */
-static const __GLcontextModes *
-findConfigMode(Display *dpy, int scrn, VisualID vid, 
-	       const __DRIscreen * pDRIScreen)
-{
-    if ( (pDRIScreen != NULL) && (pDRIScreen->private != NULL) ) {
-	const __DRIscreenPrivate * const psp =
-	    (const __DRIscreenPrivate *) pDRIScreen->private;
-
-	return _gl_context_modes_find_visual( psp->modes, vid );
-    }
-
-    return NULL;
-}
-
-
-/**
- * This function is a hack to work-around old versions of libGL.so that
- * do not export \c XF86DRICreateContextWithConfig.  I would modify the
- * code to just use this function, but the stand-alone driver (i.e., DRI
- * drivers that are built to work without XFree86) shouldn't have to know
- * about X structures like a \c Visual.
- */
-static Bool
-fake_XF86DRICreateContextWithConfig( Display* dpy, int screen, int configID,
-				     XID* context, drmContextPtr hHWContext )
-{
-    Visual  vis;
-    
-    vis.visualid = configID;
-    return XF86DRICreateContext( dpy, screen, & vis, context, hHWContext );
-}
-#endif /* DRI_NEW_INTERFACE_ONLY */
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Drawable list management */
-/*****************************************************************/
-/*@{*/
-
-static Bool __driAddDrawable(void *drawHash, __DRIdrawable *pdraw)
-{
-    __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)pdraw->private;
-
-    if (drmHashInsert(drawHash, pdp->draw, pdraw))
-	return GL_FALSE;
-
-    return GL_TRUE;
-}
-
-static __DRIdrawable *__driFindDrawable(void *drawHash, GLXDrawable draw)
-{
-    int retcode;
-    __DRIdrawable *pdraw;
-
-    retcode = drmHashLookup(drawHash, draw, (void **)&pdraw);
-    if (retcode)
-	return NULL;
-
-    return pdraw;
-}
-
-static void __driRemoveDrawable(void *drawHash, __DRIdrawable *pdraw)
-{
-    int retcode;
-    __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)pdraw->private;
-
-    retcode = drmHashLookup(drawHash, pdp->draw, (void **)&pdraw);
-    if (!retcode) { /* Found */
-	drmHashDelete(drawHash, pdp->draw);
-    }
-}
-
-#ifndef DRI_NEW_INTERFACE_ONLY
-static Bool __driWindowExistsFlag;
-
-static int __driWindowExistsErrorHandler(Display *dpy, XErrorEvent *xerr)
-{
-    if (xerr->error_code == BadWindow) {
-	__driWindowExistsFlag = GL_FALSE;
-    }
-    return 0;
-}
-
-/**
- * Determine if a window associated with a \c GLXDrawable exists on the
- * X-server.
- *
- * \param dpy  Display associated with the drawable to be queried.
- * \param draw \c GLXDrawable to test.
- * 
- * \returns \c GL_TRUE if a window exists that is associated with \c draw,
- *          otherwise \c GL_FALSE is returned.
- * 
- * \warning This function is not currently thread-safe.
- *
- * \deprecated
- * \c __glXWindowExists (from libGL) is prefered over this function.  Starting
- * with the next major release of XFree86, this function will be removed.
- * Even now this function is no longer directly called.  Instead it is called
- * via a function pointer if and only if \c __glXWindowExists does not exist.
- * 
- * \sa __glXWindowExists glXGetProcAddress window_exists
- */
-static Bool __driWindowExists(Display *dpy, GLXDrawable draw)
-{
-    XWindowAttributes xwa;
-    int (*oldXErrorHandler)(Display *, XErrorEvent *);
-
-    XSync(dpy, GL_FALSE);
-    __driWindowExistsFlag = GL_TRUE;
-    oldXErrorHandler = XSetErrorHandler(__driWindowExistsErrorHandler);
-    XGetWindowAttributes(dpy, draw, &xwa); /* dummy request */
-    XSetErrorHandler(oldXErrorHandler);
-    return __driWindowExistsFlag;
-}
-#endif /* DRI_NEW_INTERFACE_ONLY */
-
-/**
- * Find drawables in the local hash that have been destroyed on the
- * server.
- * 
- * \param drawHash  Hash-table containing all know drawables.
- */
-static void __driGarbageCollectDrawables(void *drawHash)
-{
-    GLXDrawable draw;
-    __DRIdrawable *pdraw;
-    Display *dpy;
-
-    if (drmHashFirst(drawHash, &draw, (void **)&pdraw)) {
-	do {
-	    __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)pdraw->private;
-	    dpy = pdp->driScreenPriv->display;
-	    if (! (*window_exists)(dpy, draw)) {
-		/* Destroy the local drawable data in the hash table, if the
-		   drawable no longer exists in the Xserver */
-		__driRemoveDrawable(drawHash, pdraw);
-		(*pdraw->destroyDrawable)(dpy, pdraw->private);
-		Xfree(pdraw);
-	    }
-	} while (drmHashNext(drawHash, &draw, (void **)&pdraw));
-    }
-}
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Context (un)binding functions                          */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Unbind context.
- * 
- * \param dpy the display handle.
- * \param scrn the screen number.
- * \param draw drawable.
- * \param read Current reading drawable.
- * \param gc context.
- *
- * \return \c GL_TRUE on success, or \c GL_FALSE on failure.
- * 
- * \internal
- * This function calls __DriverAPIRec::UnbindContext, and then decrements
- * __DRIdrawablePrivateRec::refcount which must be non-zero for a successful
- * return.
- * 
- * While casting the opaque private pointers associated with the parameters
- * into their respective real types it also assures they are not \c NULL. 
- */
-static Bool driUnbindContext3(Display *dpy, int scrn,
-			      GLXDrawable draw, GLXDrawable read,
-			      __DRIcontext *ctx)
-{
-    __DRIscreen *pDRIScreen;
-    __DRIdrawable *pdraw;
-    __DRIdrawable *pread;
-    __DRIcontextPrivate *pcp;
-    __DRIscreenPrivate *psp;
-    __DRIdrawablePrivate *pdp;
-    __DRIdrawablePrivate *prp;
-
-    /*
-    ** Assume error checking is done properly in glXMakeCurrent before
-    ** calling driUnbindContext3.
-    */
-
-    if (ctx == NULL || draw == None || read == None) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    pDRIScreen = __glXFindDRIScreen(dpy, scrn);
-    if ( (pDRIScreen == NULL) || (pDRIScreen->private == NULL) ) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    psp = (__DRIscreenPrivate *)pDRIScreen->private;
-    pcp = (__DRIcontextPrivate *)ctx->private;
-
-    pdraw = __driFindDrawable(psp->drawHash, draw);
-    if (!pdraw) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-    pdp = (__DRIdrawablePrivate *)pdraw->private;
-
-    pread = __driFindDrawable(psp->drawHash, read);
-    if (!pread) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-    prp = (__DRIdrawablePrivate *)pread->private;
-
-
-    /* Let driver unbind drawable from context */
-    (*psp->DriverAPI.UnbindContext)(pcp);
-
-
-    if (pdp->refcount == 0) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    pdp->refcount--;
-
-    if (prp != pdp) {
-        if (prp->refcount == 0) {
-	    /* ERROR!!! */
-	    return GL_FALSE;
-	}
-
-	prp->refcount--;
-    }
-
-
-    /* XXX this is disabled so that if we call SwapBuffers on an unbound
-     * window we can determine the last context bound to the window and
-     * use that context's lock. (BrianP, 2-Dec-2000)
-     */
-#if 0
-    /* Unbind the drawable */
-    pcp->driDrawablePriv = NULL;
-    pdp->driContextPriv = &psp->dummyContextPriv;
-#endif
-
-    return GL_TRUE;
-}
-
-
-/**
- * This function takes both a read buffer and a draw buffer.  This is needed
- * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
- * function.
- * 
- * \bug This function calls \c driCreateNewDrawable in two places with the
- *      \c renderType hard-coded to \c GLX_WINDOW_BIT.  Some checking might
- *      be needed in those places when support for pbuffers and / or pixmaps
- *      is added.  Is it safe to assume that the drawable is a window?
- */
-static Bool DoBindContext(Display *dpy,
-			  GLXDrawable draw, GLXDrawable read,
-			  __DRIcontext *ctx, const __GLcontextModes * modes,
-			  __DRIscreenPrivate *psp)
-{
-    __DRIdrawable *pdraw;
-    __DRIdrawablePrivate *pdp;
-    __DRIdrawable *pread;
-    __DRIdrawablePrivate *prp;
-    __DRIcontextPrivate * const pcp = ctx->private;
-
-
-    /* Find the _DRIdrawable which corresponds to the writing GLXDrawable */
-    pdraw = __driFindDrawable(psp->drawHash, draw);
-    if (!pdraw) {
-	/* Allocate a new drawable */
-	pdraw = (__DRIdrawable *)Xmalloc(sizeof(__DRIdrawable));
-	if (!pdraw) {
-	    /* ERROR!!! */
-	    return GL_FALSE;
-	}
-
-	/* Create a new drawable */
-	driCreateNewDrawable(dpy, modes, draw, pdraw, GLX_WINDOW_BIT,
-			     empty_attribute_list);
-	if (!pdraw->private) {
-	    /* ERROR!!! */
-	    Xfree(pdraw);
-	    return GL_FALSE;
-	}
-
-    }
-    pdp = (__DRIdrawablePrivate *) pdraw->private;
-
-    /* Find the _DRIdrawable which corresponds to the reading GLXDrawable */
-    if (read == draw) {
-        /* read buffer == draw buffer */
-        prp = pdp;
-    }
-    else {
-        pread = __driFindDrawable(psp->drawHash, read);
-        if (!pread) {
-            /* Allocate a new drawable */
-            pread = (__DRIdrawable *)Xmalloc(sizeof(__DRIdrawable));
-            if (!pread) {
-                /* ERROR!!! */
-                return GL_FALSE;
-            }
-
-            /* Create a new drawable */
-	    driCreateNewDrawable(dpy, modes, read, pread, GLX_WINDOW_BIT,
-				 empty_attribute_list);
-            if (!pread->private) {
-                /* ERROR!!! */
-                Xfree(pread);
-                return GL_FALSE;
-            }
-        }
-        prp = (__DRIdrawablePrivate *) pread->private;
-    }
-
-    /* Bind the drawable to the context */
-    pcp->driDrawablePriv = pdp;
-    pdp->driContextPriv = pcp;
-    pdp->refcount++;
-    if ( pdp != prp ) {
-	prp->refcount++;
-    }
-
-    /*
-    ** Now that we have a context associated with this drawable, we can
-    ** initialize the drawable information if has not been done before.
-    */
-    if (!pdp->pStamp || *pdp->pStamp != pdp->lastStamp) {
-	DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-	__driUtilUpdateDrawableInfo(pdp);
-	DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-    }
-
-    /* Call device-specific MakeCurrent */
-    (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);
-
-    return GL_TRUE;
-}
-
-
-/**
- * This function takes both a read buffer and a draw buffer.  This is needed
- * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
- * function.
- */
-static Bool driBindContext3(Display *dpy, int scrn,
-                            GLXDrawable draw, GLXDrawable read,
-                            __DRIcontext * ctx)
-{
-    __DRIscreen *pDRIScreen;
-
-    /*
-    ** Assume error checking is done properly in glXMakeCurrent before
-    ** calling driBindContext.
-    */
-
-    if (ctx == NULL || draw == None || read == None) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    pDRIScreen = __glXFindDRIScreen(dpy, scrn);
-    if ( (pDRIScreen == NULL) || (pDRIScreen->private == NULL) ) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    return DoBindContext( dpy, draw, read, ctx, ctx->mode,
-			  (__DRIscreenPrivate *)pDRIScreen->private );
-}
-
-
-#ifndef DRI_NEW_INTERFACE_ONLY
-/**
- * This function takes both a read buffer and a draw buffer.  This is needed
- * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
- * function.
- */
-static Bool driBindContext2(Display *dpy, int scrn,
-                            GLXDrawable draw, GLXDrawable read,
-                            GLXContext gc)
-{
-    __DRIscreen *pDRIScreen;
-    const __GLcontextModes *modes;
-
-    /*
-    ** Assume error checking is done properly in glXMakeCurrent before
-    ** calling driBindContext.
-    */
-
-    if (gc == NULL || draw == None || read == None) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    pDRIScreen = __glXFindDRIScreen(dpy, scrn);
-    modes = (driCompareGLXAPIVersion( 20040317 ) >= 0)
-	? gc->driContext.mode
-	: findConfigMode( dpy, scrn, gc->vid, pDRIScreen );
-
-    if ( modes == NULL ) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    /* findConfigMode will return NULL if the DRI screen or screen private
-     * are NULL.
-     */
-    assert( (pDRIScreen != NULL) && (pDRIScreen->private != NULL) );
-
-    return DoBindContext( dpy, draw, read, & gc->driContext, modes,
-			  (__DRIscreenPrivate *)pDRIScreen->private );
-}
-
-static Bool driUnbindContext2(Display *dpy, int scrn,
-			      GLXDrawable draw, GLXDrawable read,
-			      GLXContext gc)
-{
-    return driUnbindContext3(dpy, scrn, draw, read, & gc->driContext);
-}
-
-/*
- * Simply call bind with the same GLXDrawable for the read and draw buffers.
- */
-static Bool driBindContext(Display *dpy, int scrn,
-                           GLXDrawable draw, GLXContext gc)
-{
-    return driBindContext2(dpy, scrn, draw, draw, gc);
-}
-
-
-/*
- * Simply call bind with the same GLXDrawable for the read and draw buffers.
- */
-static Bool driUnbindContext(Display *dpy, int scrn,
-                             GLXDrawable draw, GLXContext gc,
-                             int will_rebind)
-{
-   (void) will_rebind;
-   return driUnbindContext2( dpy, scrn, draw, draw, gc );
-}
-#endif /* DRI_NEW_INTERFACE_ONLY */
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Drawable handling functions                            */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Update private drawable information.
- *
- * \param pdp pointer to the private drawable information to update.
- * 
- * This function basically updates the __DRIdrawablePrivate struct's
- * cliprect information by calling \c __DRIDrawablePrivate::getInfo.  This is
- * usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which
- * compares the __DRIdrwablePrivate pStamp and lastStamp values.  If
- * the values are different that means we have to update the clipping
- * info.
- */
-void
-__driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp)
-{
-    __DRIscreenPrivate *psp;
-    __DRIcontextPrivate *pcp = pdp->driContextPriv;
-    
-    if (!pcp || (pdp != pcp->driDrawablePriv)) {
-	/* ERROR!!! */
-	return;
-    }
-
-    psp = pdp->driScreenPriv;
-    if (!psp) {
-	/* ERROR!!! */
-	return;
-    }
-
-    if (pdp->pClipRects) {
-	Xfree(pdp->pClipRects); 
-    }
-
-    if (pdp->pBackClipRects) {
-	Xfree(pdp->pBackClipRects); 
-    }
-
-    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-
-    if (!__driFindDrawable(psp->drawHash, pdp->draw) ||
-	! (*pdp->getInfo)(pdp->display, pdp->screen, pdp->draw,
-			  &pdp->index, &pdp->lastStamp,
-			  &pdp->x, &pdp->y, &pdp->w, &pdp->h,
-			  &pdp->numClipRects, &pdp->pClipRects,
-			  &pdp->backX,
-			  &pdp->backY,
-			  &pdp->numBackClipRects,
-			  &pdp->pBackClipRects )) {
-	/* Error -- eg the window may have been destroyed.  Keep going
-	 * with no cliprects.
-	 */
-        pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */
-	pdp->numClipRects = 0;
-	pdp->pClipRects = NULL;
-	pdp->numBackClipRects = 0;
-	pdp->pBackClipRects = NULL;
-    }
-    else
-       pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);
-
-    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-
-}
-
-/*@}*/
-
-/*****************************************************************/
-/** \name GLX callbacks                                          */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Swap buffers.
- *
- * \param dpy the display handle.
- * \param drawablePrivate opaque pointer to the per-drawable private info.
- * 
- * \internal
- * This function calls __DRIdrawablePrivate::swapBuffers.
- * 
- * Is called directly from glXSwapBuffers().
- */
-static void driSwapBuffers( Display *dpy, void *drawablePrivate )
-{
-    __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePrivate;
-    dPriv->swapBuffers(dPriv);
-    (void) dpy;
-}
-
-/**
- * Called directly from a number of higher-level GLX functions.
- */
-static int driGetMSC( void *screenPrivate, int64_t *msc )
-{
-    __DRIscreenPrivate *sPriv = (__DRIscreenPrivate *) screenPrivate;
-
-    return sPriv->DriverAPI.GetMSC( sPriv, msc );
-}
-
-/**
- * Called directly from a number of higher-level GLX functions.
- */
-static int driGetSBC( Display *dpy, void *drawablePrivate, int64_t *sbc )
-{
-   __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePrivate;
-   __DRIswapInfo  sInfo;
-   int  status;
-
-
-   status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );
-   *sbc = sInfo.swap_count;
-
-   return status;
-}
-
-static int driWaitForSBC( Display * dpy, void *drawablePriv,
-			  int64_t target_sbc,
-			  int64_t * msc, int64_t * sbc )
-{
-    __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePriv;
-
-    return dPriv->driScreenPriv->DriverAPI.WaitForSBC( dPriv, target_sbc,
-                                                       msc, sbc );
-}
-
-static int driWaitForMSC( Display * dpy, void *drawablePriv,
-			  int64_t target_msc,
-			  int64_t divisor, int64_t remainder,
-			  int64_t * msc, int64_t * sbc )
-{
-    __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePriv;
-    __DRIswapInfo  sInfo;
-    int  status;
-
-
-    status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,
-                                                         divisor, remainder,
-                                                         msc );
-
-    /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync
-     * is supported but GLX_OML_sync_control is not.  Therefore, don't return
-     * an error value if GetSwapInfo() is not implemented.
-    */
-    if ( status == 0
-         && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {
-        status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );
-        *sbc = sInfo.swap_count;
-    }
-
-    return status;
-}
-
-static int64_t driSwapBuffersMSC( Display * dpy, void *drawablePriv,
-				  int64_t target_msc,
-				  int64_t divisor, int64_t remainder )
-{
-    __DRIdrawablePrivate *dPriv = (__DRIdrawablePrivate *) drawablePriv;
-
-    return dPriv->driScreenPriv->DriverAPI.SwapBuffersMSC( dPriv, target_msc,
-                                                           divisor, 
-                                                           remainder );
-}
-
-
-/**
- * This is called via __DRIscreenRec's createNewDrawable pointer.
- */
-static void *driCreateNewDrawable(Display *dpy,
-				  const __GLcontextModes *modes,
-				  GLXDrawable draw,
-				  __DRIdrawable *pdraw,
-				  int renderType,
-				  const int *attrs)
-{
-    __DRIscreen * const pDRIScreen = __glXFindDRIScreen(dpy, modes->screen);
-    __DRIscreenPrivate *psp;
-    __DRIdrawablePrivate *pdp;
-
-
-    /* Since pbuffers are not yet supported, no drawable attributes are
-     * supported either.
-     */
-    (void) attrs;
-
-    if ( (pDRIScreen == NULL) || (pDRIScreen->private == NULL) ) {
-	return NULL;
-    }
-
-    pdp = (__DRIdrawablePrivate *)Xmalloc(sizeof(__DRIdrawablePrivate));
-    if (!pdp) {
-	return NULL;
-    }
-
-    if (!XF86DRICreateDrawable(dpy, modes->screen, draw, &pdp->hHWDrawable)) {
-	Xfree(pdp);
-	return NULL;
-    }
-
-    pdp->draw = draw;
-    pdp->pdraw = pdraw;
-    pdp->refcount = 0;
-    pdp->pStamp = NULL;
-    pdp->lastStamp = 0;
-    pdp->index = 0;
-    pdp->x = 0;
-    pdp->y = 0;
-    pdp->w = 0;
-    pdp->h = 0;
-    pdp->numClipRects = 0;
-    pdp->numBackClipRects = 0;
-    pdp->pClipRects = NULL;
-    pdp->pBackClipRects = NULL;
-    pdp->display = dpy;
-    pdp->screen = modes->screen;
-
-    psp = (__DRIscreenPrivate *)pDRIScreen->private;
-    pdp->driScreenPriv = psp;
-    pdp->driContextPriv = &psp->dummyContextPriv;
-
-    pdp->getInfo = (GetDrawableInfo *)
-	glXGetProcAddress( (const GLubyte *) "__glXGetDrawableInfo" );
-    if ( pdp->getInfo == NULL ) {
-	pdp->getInfo = XF86DRIGetDrawableInfo;
-    }
-
-    if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, modes,
-					renderType == GLX_PIXMAP_BIT)) {
-       (void)XF86DRIDestroyDrawable(dpy, modes->screen, pdp->draw);
-       Xfree(pdp);
-       return NULL;
-    }
-
-    pdraw->private = pdp;
-    pdraw->destroyDrawable = driDestroyDrawable;
-    pdraw->swapBuffers = driSwapBuffers;  /* called by glXSwapBuffers() */
-
-    if ( driCompareGLXAPIVersion( 20030317 ) >= 0 ) {
-        pdraw->getSBC = driGetSBC;
-        pdraw->waitForSBC = driWaitForSBC;
-        pdraw->waitForMSC = driWaitForMSC;
-        pdraw->swapBuffersMSC = driSwapBuffersMSC;
-        pdraw->frameTracking = NULL;
-        pdraw->queryFrameTracking = driQueryFrameTracking;
-
-        /* This special default value is replaced with the configured
-	 * default value when the drawable is first bound to a direct
-	 * rendering context. */
-        pdraw->swap_interval = (unsigned)-1;
-    }
-
-    pdp->swapBuffers = psp->DriverAPI.SwapBuffers;
-
-    /* Add pdraw to drawable list */
-    if (!__driAddDrawable(psp->drawHash, pdraw)) {
-	/* ERROR!!! */
-	(*pdraw->destroyDrawable)(dpy, pdp);
-	Xfree(pdp);
-	pdp = NULL;
-	pdraw->private = NULL;
-    }
-
-   return (void *) pdp;
-}
-
-static __DRIdrawable *driGetDrawable(Display *dpy, GLXDrawable draw,
-					 void *screenPrivate)
-{
-    __DRIscreenPrivate *psp = (__DRIscreenPrivate *) screenPrivate;
-
-    /*
-    ** Make sure this routine returns NULL if the drawable is not bound
-    ** to a direct rendering context!
-    */
-    return __driFindDrawable(psp->drawHash, draw);
-}
-
-static void driDestroyDrawable(Display *dpy, void *drawablePrivate)
-{
-    __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *) drawablePrivate;
-    __DRIscreenPrivate *psp = pdp->driScreenPriv;
-    int scrn = psp->myNum;
-
-    if (pdp) {
-        (*psp->DriverAPI.DestroyBuffer)(pdp);
-	if ((*window_exists)(dpy, pdp->draw))
-	    (void)XF86DRIDestroyDrawable(dpy, scrn, pdp->draw);
-	if (pdp->pClipRects) {
-	    Xfree(pdp->pClipRects);
-	    pdp->pClipRects = NULL;
-	}
-	if (pdp->pBackClipRects) {
-	    Xfree(pdp->pBackClipRects);
-	    pdp->pBackClipRects = NULL;
-	}
-	Xfree(pdp);
-    }
-}
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Context handling functions                             */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Destroy the per-context private information.
- * 
- * \param dpy the display handle.
- * \param scrn the screen number.
- * \param contextPrivate opaque pointer to the per-drawable private info.
- *
- * \internal
- * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls
- * drmDestroyContext(), and finally frees \p contextPrivate.
- */
-static void driDestroyContext(Display *dpy, int scrn, void *contextPrivate)
-{
-    __DRIcontextPrivate  *pcp   = (__DRIcontextPrivate *) contextPrivate;
-
-    if (pcp) {
-	(*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp);
-	__driGarbageCollectDrawables(pcp->driScreenPriv->drawHash);
-	(void)XF86DRIDestroyContext(dpy, scrn, pcp->contextID);
-	Xfree(pcp);
-    }
-}
-
-
-/**
- * Create the per-drawable private driver information.
- * 
- * \param dpy           The display handle.
- * \param modes         Mode used to create the new context.
- * \param render_type   Type of rendering target.  \c GLX_RGBA is the only
- *                      type likely to ever be supported for direct-rendering.
- * \param sharedPrivate The shared context dependent methods or \c NULL if
- *                      non-existent.
- * \param pctx          DRI context to receive the context dependent methods.
- *
- * \returns An opaque pointer to the per-context private information on
- *          success, or \c NULL on failure.
- * 
- * \internal
- * This function allocates and fills a __DRIcontextPrivateRec structure.  It
- * performs some device independent initialization and passes all the
- * relevent information to __DriverAPIRec::CreateContext to create the
- * context.
- *
- */
-static void *
-driCreateNewContext(Display *dpy, const __GLcontextModes *modes,
-		    int render_type, void *sharedPrivate, __DRIcontext *pctx)
-{
-    __DRIscreen *pDRIScreen;
-    __DRIcontextPrivate *pcp;
-    __DRIcontextPrivate *pshare = (__DRIcontextPrivate *) sharedPrivate;
-    __DRIscreenPrivate *psp;
-    void * const shareCtx = (pshare != NULL) ? pshare->driverPrivate : NULL;
-
-    pDRIScreen = __glXFindDRIScreen(dpy, modes->screen);
-    if ( (pDRIScreen == NULL) || (pDRIScreen->private == NULL) ) {
-	/* ERROR!!! */
-	return NULL;
-    } 
-
-    psp = (__DRIscreenPrivate *)pDRIScreen->private;
-
-    pcp = (__DRIcontextPrivate *)Xmalloc(sizeof(__DRIcontextPrivate));
-    if (!pcp) {
-	return NULL;
-    }
-
-    if (! (*create_context_with_config)(dpy, modes->screen, modes->fbconfigID,
-					&pcp->contextID, &pcp->hHWContext)) {
-	Xfree(pcp);
-	return NULL;
-    }
-
-    pcp->display = dpy;
-    pcp->driScreenPriv = psp;
-    pcp->driDrawablePriv = NULL;
-
-    /* When the first context is created for a screen, initialize a "dummy"
-     * context.
-     */
-
-    if (!psp->dummyContextPriv.driScreenPriv) {
-        psp->dummyContextPriv.contextID = 0;
-        psp->dummyContextPriv.hHWContext = psp->pSAREA->dummy_context;
-        psp->dummyContextPriv.driScreenPriv = psp;
-        psp->dummyContextPriv.driDrawablePriv = NULL;
-        psp->dummyContextPriv.driverPrivate = NULL;
-	/* No other fields should be used! */
-    }
-
-    pctx->destroyContext = driDestroyContext;
-#ifdef DRI_NEW_INTERFACE_ONLY
-    pctx->bindContext    = NULL;
-    pctx->unbindContext  = NULL;
-    pctx->bindContext2   = NULL;
-    pctx->unbindContext2 = NULL;
-    pctx->bindContex3    = driBindContext3;
-    pctx->unbindContext3 = driUnbindContext3;
-#else
-    pctx->bindContext    = driBindContext;
-    pctx->unbindContext  = driUnbindContext;
-    if ( driCompareGLXAPIVersion( 20030606 ) >= 0 ) {
-        pctx->bindContext2   = driBindContext2;
-        pctx->unbindContext2 = driUnbindContext2;
-    }
-
-    if ( driCompareGLXAPIVersion( 20040415 ) >= 0 ) {
-        pctx->bindContext3   = driBindContext3;
-        pctx->unbindContext3 = driUnbindContext3;
-    }
-#endif
-
-    if ( !(*psp->DriverAPI.CreateContext)(modes, pcp, shareCtx) ) {
-        (void)XF86DRIDestroyContext(dpy, modes->screen, pcp->contextID);
-        Xfree(pcp);
-        return NULL;
-    }
-
-    __driGarbageCollectDrawables(pcp->driScreenPriv->drawHash);
-
-    return pcp;
-}
-
-
-#ifndef DRI_NEW_INTERFACE_ONLY
-/**
- * Create the per-drawable private driver information.
- * 
- * \param dpy the display handle.
- * \param vis the visual information.
- * \param sharedPrivate the shared context dependent methods or \c NULL if
- *                      non-existent.
- * \param pctx will receive the context dependent methods.
- *
- * \returns a opaque pointer to the per-context private information on success, or \c NULL
- * on failure.
- * 
- * \deprecated
- * This function has been replaced by \c driCreateNewContext.  In drivers
- * built to work with XFree86, this function will continue to exist to support
- * older versions of libGL.  Starting with the next major relelase of XFree86,
- * this function will be removed.
- * 
- * \internal
- * This function allocates and fills a __DRIcontextPrivateRec structure.  It
- * gets the visual, converts it into a __GLcontextModesRec and passes it
- * to __DriverAPIRec::CreateContext to create the context.
- */
-static void *driCreateContext(Display *dpy, XVisualInfo *vis,
-                              void *sharedPrivate, __DRIcontext *pctx)
-{
-    __DRIscreen *pDRIScreen;
-    const __GLcontextModes *modes;
-
-    pDRIScreen = __glXFindDRIScreen(dpy, vis->screen);
-    if ( (pDRIScreen == NULL) || (pDRIScreen->private == NULL) ) {
-	/* ERROR!!! */
-	return NULL;
-    } 
-
-
-    /* Setup a __GLcontextModes struct corresponding to vis->visualid
-     * and create the rendering context.
-     */
-
-    modes = findConfigMode(dpy, vis->screen, vis->visualid, pDRIScreen);
-    return (modes == NULL) 
-	? NULL
-	: driCreateNewContext( dpy, modes, GLX_RGBA_TYPE,
-			       sharedPrivate, pctx );
-}
-#endif /* DRI_NEW_INTERFACE_ONLY */
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Screen handling functions                              */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Destroy the per-screen private information.
- * 
- * \param dpy the display handle.
- * \param scrn the screen number.
- * \param screenPrivate opaque pointer to the per-screen private information.
- *
- * \internal
- * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
- * drmClose(), and finally frees \p screenPrivate.
- */
-static void driDestroyScreen(Display *dpy, int scrn, void *screenPrivate)
-{
-    __DRIscreenPrivate *psp = (__DRIscreenPrivate *) screenPrivate;
-
-    if (psp) {
-	/* No interaction with the X-server is possible at this point.  This
-	 * routine is called after XCloseDisplay, so there is no protocol
-	 * stream open to the X-server anymore.
-	 */
-
-	if (psp->DriverAPI.DestroyScreen)
-	    (*psp->DriverAPI.DestroyScreen)(psp);
-
-	(void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
-	(void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
-	Xfree(psp->pDevPriv);
-	(void)drmClose(psp->fd);
-	if ( psp->modes != NULL ) {
-	    _gl_context_modes_destroy( psp->modes );
-	}
-	Xfree(psp);
-    }
-}
-
-
-/**
- * Utility function used to create a new driver-private screen structure.
- * 
- * \param dpy   Display pointer
- * \param scrn  Index of the screen
- * \param psc   DRI screen data (not driver private)
- * \param modes Linked list of known display modes.  This list is, at a
- *              minimum, a list of modes based on the current display mode.
- *              These roughly match the set of available X11 visuals, but it
- *              need not be limited to X11!  The calling libGL should create
- *              a list that will inform the driver of the current display
- *              mode (i.e., color buffer depth, depth buffer depth, etc.).
- * \param ddx_version Version of the 2D DDX.  This may not be meaningful for
- *                    all drivers.
- * \param dri_version Version of the "server-side" DRI.
- * \param drm_version Version of the kernel DRM.
- * \param frame_buffer Data describing the location and layout of the
- *                     framebuffer.
- * \param pSAREA       Pointer the the SAREA.
- * \param fd           Device handle for the DRM.
- * \param internal_api_version  Version of the internal interface between the
- *                              driver and libGL.
- * \param driverAPI Driver API functions used by other routines in dri_util.c.
- */
-__DRIscreenPrivate *
-__driUtilCreateNewScreen(Display *dpy, int scrn, __DRIscreen *psc,
-			 __GLcontextModes * modes,
-			 const __DRIversion * ddx_version,
-			 const __DRIversion * dri_version,
-			 const __DRIversion * drm_version,
-			 const __DRIframebuffer * frame_buffer,
-			 drmAddress pSAREA,
-			 int fd,
-			 int internal_api_version,
-			 const struct __DriverAPIRec *driverAPI)
-{
-    __DRIscreenPrivate *psp;
-
-
-#ifdef DRI_NEW_INTERFACE_ONLY
-    if ( internal_api_version < 20040415 ) {
-	fprintf( stderr, "libGL error: libGL.so version (%08u) is too old.  "
-		 "20040415 or later is required.\n", internal_api_version );
-	return NULL;
-    }
-#else
-    if ( internal_api_version == 20031201 ) {
-	fprintf( stderr, "libGL error: libGL version 20031201 has critical "
-		 "binary compatilibity bugs.\nlibGL error: You must upgrade "
-		 "to use direct-rendering!\n" );
-	return NULL;
-    }
-#endif /* DRI_NEW_INTERFACE_ONLY */
-
-
-    window_exists = (PFNGLXWINDOWEXISTSPROC)
-	glXGetProcAddress( (const GLubyte *) "__glXWindowExists" );
-
-    if ( window_exists == NULL ) {
-#ifdef DRI_NEW_INTERFACE_ONLY
-	fprintf( stderr, "libGL error: libGL.so version (%08u) is too old.  "
-		 "20021128 or later is required.\n", internal_api_version );
-	return NULL;
-#else
-	window_exists = (PFNGLXWINDOWEXISTSPROC) __driWindowExists;
-#endif /* DRI_NEW_INTERFACE_ONLY */
-    }
-
-    create_context_with_config = (PFNGLXCREATECONTEXTWITHCONFIGPROC)
-	glXGetProcAddress( (const GLubyte *) "__glXCreateContextWithConfig" );
-    if ( create_context_with_config == NULL ) {
-#ifdef DRI_NEW_INTERFACE_ONLY
-	fprintf( stderr, "libGL error: libGL.so version (%08u) is too old.  "
-		 "20031201 or later is required.\n", internal_api_version );
-	return NULL;
-#else
-	create_context_with_config = (PFNGLXCREATECONTEXTWITHCONFIGPROC)
-	    fake_XF86DRICreateContextWithConfig;
-#endif /* DRI_NEW_INTERFACE_ONLY */
-    }
-	
-    api_ver = internal_api_version;
-
-    psp = (__DRIscreenPrivate *)Xmalloc(sizeof(__DRIscreenPrivate));
-    if (!psp) {
-	return NULL;
-    }
-
-    /* Create the hash table */
-    psp->drawHash = drmHashCreate();
-    if ( psp->drawHash == NULL ) {
-	Xfree( psp );
-	return NULL;
-    }
-
-    psp->display = dpy;
-    psp->myNum = scrn;
-    psp->psc = psc;
-    psp->modes = modes;
-
-    /*
-    ** NOT_DONE: This is used by the X server to detect when the client
-    ** has died while holding the drawable lock.  The client sets the
-    ** drawable lock to this value.
-    */
-    psp->drawLockID = 1;
-
-    psp->drmMajor = drm_version->major;
-    psp->drmMinor = drm_version->minor;
-    psp->drmPatch = drm_version->patch;
-    psp->ddxMajor = ddx_version->major;
-    psp->ddxMinor = ddx_version->minor;
-    psp->ddxPatch = ddx_version->patch;
-    psp->driMajor = dri_version->major;
-    psp->driMinor = dri_version->minor;
-    psp->driPatch = dri_version->patch;
-
-    /* install driver's callback functions */
-    memcpy( &psp->DriverAPI, driverAPI, sizeof(struct __DriverAPIRec) );
-
-    psp->pSAREA = pSAREA;
-
-    psp->pFB = frame_buffer->base;
-    psp->fbSize = frame_buffer->size;
-    psp->fbStride = frame_buffer->stride;
-    psp->fbWidth = frame_buffer->width;
-    psp->fbHeight = frame_buffer->height;
-    psp->devPrivSize = frame_buffer->dev_priv_size;
-    psp->pDevPriv = frame_buffer->dev_priv;
-
-    psp->fd = fd;
-
-    /*
-    ** Do not init dummy context here; actual initialization will be
-    ** done when the first DRI context is created.  Init screen priv ptr
-    ** to NULL to let CreateContext routine that it needs to be inited.
-    */
-    psp->dummyContextPriv.driScreenPriv = NULL;
-
-    psc->destroyScreen     = driDestroyScreen;
-#ifndef DRI_NEW_INTERFACE_ONLY
-    psc->createContext     = driCreateContext;
-#else
-    psc->createConteext    = NULL;
-#endif
-    psc->createNewDrawable = driCreateNewDrawable;
-    psc->getDrawable       = driGetDrawable;
-#ifdef DRI_NEW_INTERFACE_ONLY
-    psc->getMSC            = driGetMSC;
-    psc->createNewContext  = driCreateNewContext;
-#else
-    if ( driCompareGLXAPIVersion( 20030317 ) >= 0 ) {
-        psc->getMSC        = driGetMSC;
-
-	if ( driCompareGLXAPIVersion( 20030824 ) >= 0 ) {
-	    psc->createNewContext = driCreateNewContext;
-	}
-    }
-#endif
-
-    if ( (psp->DriverAPI.InitDriver != NULL)
-	 && !(*psp->DriverAPI.InitDriver)(psp) ) {
-	Xfree( psp );
-	return NULL;
-    }
-
-
-    return psp;
-}
-
-
-#ifndef DRI_NEW_INTERFACE_ONLY
-/**
- * Utility function used to create a new driver-private screen structure.
- * 
- * \param dpy        Display pointer.
- * \param scrn       Index of the screen.
- * \param psc        DRI screen data (not driver private)
- * \param numConfigs Number of visual configs pointed to by \c configs.
- * \param configs    Array of GLXvisualConfigs exported by the 2D driver.
- * \param driverAPI Driver API functions used by other routines in dri_util.c.
- * 
- * \deprecated
- * This function has been replaced by \c __driUtilCreateNewScreen.  In drivers
- * built to work with XFree86, this function will continue to exist to support
- * older versions of libGL.  Starting with the next major relelase of XFree86,
- * this function will be removed.
- */
-__DRIscreenPrivate *
-__driUtilCreateScreen(Display *dpy, int scrn, __DRIscreen *psc,
-                      int numConfigs, __GLXvisualConfig *configs,
-                      const struct __DriverAPIRec *driverAPI)
-{
-    int directCapable;
-    __DRIscreenPrivate *psp = NULL;
-    drmHandle hSAREA;
-    drmAddress pSAREA;
-    char *BusID;
-    __GLcontextModes *modes;
-    __GLcontextModes *temp;
-    int   i;
-    __DRIversion   ddx_version;
-    __DRIversion   dri_version;
-    __DRIversion   drm_version;
-    __DRIframebuffer  framebuffer;
-    int   fd = -1;
-    int   status;
-    const char * err_msg;
-    const char * err_extra;
-
-
-    if (!XF86DRIQueryDirectRenderingCapable(dpy, scrn, &directCapable)
-	|| !directCapable) {
-	return NULL;
-    }
-
-
-    /* Create the linked list of context modes, and populate it with the
-     * GLX visual information passed in by libGL.
-     */
-
-    modes = _gl_context_modes_create( numConfigs, sizeof(__GLcontextModes) );
-    if ( modes == NULL ) {
-	return NULL;
-    }
-
-    temp = modes;
-    for ( i = 0 ; i < numConfigs ; i++ ) {
-	assert( temp != NULL );
-	_gl_copy_visual_to_context_mode( temp, & configs[i] );
-	temp->screen = scrn;
-
-	temp = temp->next;
-    }
-
-    err_msg = "XF86DRIOpenConnection";
-    err_extra = NULL;
-
-    if (XF86DRIOpenConnection(dpy, scrn, &hSAREA, &BusID)) {
-	fd = drmOpen(NULL,BusID);
-	Xfree(BusID); /* No longer needed */
-
-	err_msg = "open DRM";
-	err_extra = strerror( -fd );
-
-	if (fd >= 0) {
-	    drmMagic magic;
-
-	    err_msg = "drmGetMagic";
-	    err_extra = NULL;
-
-	    if (!drmGetMagic(fd, &magic)) {
-		drmVersionPtr 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;
-		}
-
-		err_msg = "XF86DRIAuthConnection";
-		if (XF86DRIAuthConnection(dpy, scrn, magic)) {
-		    char *driverName;
-
-		    /*
-		     * Get device name (like "tdfx") and the ddx version numbers.
-		     * We'll check the version in each DRI driver's "createScreen"
-		     * function.
-		     */
-		    err_msg = "XF86DRIGetClientDriverName";
-		    if (XF86DRIGetClientDriverName(dpy, scrn,
-						   &ddx_version.major,
-						   &ddx_version.minor,
-						   &ddx_version.patch,
-						   &driverName)) {
-
-			/* No longer needed. */
-			Xfree( driverName );
-
-			/*
-			 * Get the DRI X extension version.
-			 */
-			err_msg = "XF86DRIQueryVersion";
-			if (XF86DRIQueryVersion(dpy,
-						&dri_version.major,
-						&dri_version.minor,
-						&dri_version.patch)) {
-			    drmHandle  hFB;
-			    int        junk;
-
-			    /*
-			     * 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.
-			     */
-			    err_msg = "XF86DRIGetDeviceInfo";
-			    if (XF86DRIGetDeviceInfo(dpy, scrn,
-						     &hFB,
-						     &junk,
-						     &framebuffer.size,
-						     &framebuffer.stride,
-						     &framebuffer.dev_priv_size,
-						     &framebuffer.dev_priv)) {
-				framebuffer.width = DisplayWidth(dpy, scrn);
-				framebuffer.height = DisplayHeight(dpy, scrn);
-
-				/*
-				 * Map the framebuffer region.
-				 */
-				status = drmMap(fd, hFB, framebuffer.size, 
-						(drmAddressPtr)&framebuffer.base);
-				
-				err_msg = "drmMap of framebuffer";
-				err_extra = strerror( -status );
-
-				if ( status == 0 ) {
-				    /*
-				     * Map the SAREA region.  Further mmap regions may be setup in
-				     * each DRI driver's "createScreen" function.
-				     */
-				    status = drmMap(fd, hSAREA, SAREA_MAX, 
-						    &pSAREA);
-
-				    err_msg = "drmMap of sarea";
-				    err_extra = strerror( -status );
-
-				    if ( status == 0 ) {
-					PFNGLXGETINTERNALVERSIONPROC get_ver;
-
-					get_ver = (PFNGLXGETINTERNALVERSIONPROC)
-					    glXGetProcAddress( (const GLubyte *) "__glXGetInternalVersion" );
-
-					err_msg = "InitDriver";
-					err_extra = NULL;
-					psp = __driUtilCreateNewScreen( dpy, scrn, psc, modes,
-									& ddx_version,
-									& dri_version,
-									& drm_version,
-									& framebuffer,
-									pSAREA,
-									fd,
-									(get_ver != NULL) ? (*get_ver)() : 1,
-									driverAPI );
-				    }
-				}
-			    }
-			}
-		    }
-		}
-	    }
-	}
-    }
-
-    if ( psp == NULL ) {
-	if ( pSAREA != MAP_FAILED ) {
-	    (void)drmUnmap(pSAREA, SAREA_MAX);
-	}
-
-	if ( framebuffer.base != MAP_FAILED ) {
-	    (void)drmUnmap((drmAddress)framebuffer.base, framebuffer.size);
-	}
-
-	if ( framebuffer.dev_priv != NULL ) {
-	    Xfree(framebuffer.dev_priv);
-	}
-
-	if ( fd >= 0 ) {
-	    (void)drmClose(fd);
-	}
-
-	if ( modes != NULL ) {
-	    _gl_context_modes_destroy( modes );
-	}
-
-	(void)XF86DRICloseConnection(dpy, scrn);
-
-	if ( err_extra != NULL ) {
-	    fprintf(stderr, "libGL error: %s failed (%s)\n", err_msg,
-		    err_extra);
-	}
-	else {
-	    fprintf(stderr, "libGL error: %s failed\n", err_msg );
-	}
-
-        fprintf(stderr, "libGL error: reverting to (slow) indirect rendering\n");
-    }
-
-    return psp;
-}
-#endif /* DRI_NEW_INTERFACE_ONLY */
-
-
-/**
- * Compare the current GLX API version with a driver supplied required version.
- * 
- * The minimum required version is compared with the API version exported by
- * the \c __glXGetInternalVersion function (in libGL.so).
- * 
- * \param   required_version Minimum required internal GLX API version.
- * \return  A tri-value return, as from strcmp is returned.  A value less
- *          than, equal to, or greater than zero will be returned if the
- *          internal GLX API version is less than, equal to, or greater
- *          than \c required_version.
- *
- * \sa __glXGetInternalVersion().
- */
-int driCompareGLXAPIVersion( GLuint required_version )
-{
-   if ( api_ver > required_version ) {
-      return 1;
-   }
-   else if ( api_ver == required_version ) {
-      return 0;
-   }
-
-   return -1;
-}
-
-
-static int
-driQueryFrameTracking( Display * dpy, void * priv,
-		       int64_t * sbc, int64_t * missedFrames,
-		       float * lastMissedUsage, float * usage )
-{
-   static PFNGLXGETUSTPROC   get_ust;
-   __DRIswapInfo   sInfo;
-   int             status;
-   int64_t         ust;
-   __DRIdrawablePrivate * dpriv = (__DRIdrawablePrivate *) priv;
-
-   if ( get_ust == NULL ) {
-      get_ust = (PFNGLXGETUSTPROC) glXGetProcAddress( (const GLubyte *) "__glXGetUST" );
-   }
-
-   status = dpriv->driScreenPriv->DriverAPI.GetSwapInfo( dpriv, & sInfo );
-   if ( status == 0 ) {
-      *sbc = sInfo.swap_count;
-      *missedFrames = sInfo.swap_missed_count;
-      *lastMissedUsage = sInfo.swap_missed_usage;
-
-      (*get_ust)( & ust );
-      *usage = driCalculateSwapUsage( dpriv, sInfo.swap_ust, ust );
-   }
-
-   return status;
-}
-
-
-/**
- * Calculate amount of swap interval used between GLX buffer swaps.
- * 
- * The usage value, on the range [0,max], is the fraction of total swap
- * interval time used between GLX buffer swaps is calculated.
- *
- *            \f$p = t_d / (i * t_r)\f$
- * 
- * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the
- * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time
- * required for a single vertical refresh period (as returned by \c
- * glXGetMscRateOML).
- * 
- * See the documentation for the GLX_MESA_swap_frame_usage extension for more
- * details.
- *
- * \param   dPriv  Pointer to the private drawable structure.
- * \return  If less than a single swap interval time period was required
- *          between GLX buffer swaps, a number greater than 0 and less than
- *          1.0 is returned.  If exactly one swap interval time period is
- *          required, 1.0 is returned, and if more than one is required then
- *          a number greater than 1.0 will be returned.
- *
- * \sa glXSwapIntervalSGI glXGetMscRateOML
- * 
- * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it
- *       be possible to cache the sync rate?
- */
-float
-driCalculateSwapUsage( __DRIdrawablePrivate *dPriv, int64_t last_swap_ust,
-		       int64_t current_ust )
-{
-   static PFNGLXGETMSCRATEOMLPROC get_msc_rate = NULL;
-   int32_t   n;
-   int32_t   d;
-   int       interval;
-   float     usage = 1.0;
-
-
-   if ( get_msc_rate == NULL ) {
-      get_msc_rate = (PFNGLXGETMSCRATEOMLPROC)
-	  glXGetProcAddress( (const GLubyte *) "glXGetMscRateOML" );
-   }
-   
-   if ( (get_msc_rate != NULL)
-	&& get_msc_rate( dPriv->display, dPriv->draw, &n, &d ) ) {
-      interval = (dPriv->pdraw->swap_interval != 0)
-	  ? dPriv->pdraw->swap_interval : 1;
-
-
-      /* We want to calculate
-       * (current_UST - last_swap_UST) / (interval * us_per_refresh).  We get
-       * current_UST by calling __glXGetUST.  last_swap_UST is stored in
-       * dPriv->swap_ust.  interval has already been calculated.
-       *
-       * The only tricky part is us_per_refresh.  us_per_refresh is
-       * 1000000 / MSC_rate.  We know the MSC_rate is n / d.  We can flip it
-       * around and say us_per_refresh = 1000000 * d / n.  Since this goes in
-       * the denominator of the final calculation, we calculate
-       * (interval * 1000000 * d) and move n into the numerator.
-       */
-
-      usage = (current_ust - last_swap_ust);
-      usage *= n;
-      usage /= (interval * d);
-      usage /= 1000000.0;
-   }
-   
-   return usage;
-}
-
-/*@}*/
-
-#endif /* GLX_DIRECT_RENDERING */