diff --git a/hw/xgl/glx/xglx.c b/hw/xgl/glx/xglx.c
index c89c496d8..dc2482eca 100644
--- a/hw/xgl/glx/xglx.c
+++ b/hw/xgl/glx/xglx.c
@@ -67,7 +67,9 @@ ScreenPtr	 currentScreen = NULL;
 xglScreenInfoRec xglScreenInfo = {
     NULL, 0, 0, 0, 0, FALSE,
     DEFAULT_GEOMETRY_DATA_TYPE,
-    DEFAULT_GEOMETRY_USAGE
+    DEFAULT_GEOMETRY_USAGE,
+    FALSE,
+    XGL_DEFAULT_PBO_MASK
 };
 
 static Bool
diff --git a/hw/xgl/xgl.h b/hw/xgl/xgl.h
index 6bbc7b975..346d7b3b5 100644
--- a/hw/xgl/xgl.h
+++ b/hw/xgl/xgl.h
@@ -54,6 +54,8 @@ typedef struct _GCFuncs *GCFuncsPtr;
 
 extern WindowPtr *WindowTable;
 
+#define XGL_DEFAULT_PBO_MASK 0 /* don't use PBO as default */
+
 typedef struct _xglScreenInfo {
     glitz_drawable_t *drawable;
     unsigned int     width;
@@ -63,6 +65,8 @@ typedef struct _xglScreenInfo {
     Bool	     fullscreen;
     int		     geometryDataType;
     int		     geometryUsage;
+    Bool	     yInverted;
+    int		     pboMask;
 } xglScreenInfoRec, *xglScreenInfoPtr;
 
 typedef struct _xglPixelFormat {
@@ -217,6 +221,8 @@ typedef struct _xglScreen {
     int				  nOffscreen;
     int				  geometryUsage;
     int				  geometryDataType;
+    Bool			  yInverted;
+    int				  pboMask;
     xglGeometryRec		  scratchGeometry;
     
 #ifdef RENDER
@@ -830,12 +836,27 @@ xglSetGeometry (xglGeometryPtr 	pGeometry,
 
 /* xglpixmap.c */
 
+#define XGL_PIXMAP_USAGE_HINT_STREAM_DRAW  1
+#define XGL_PIXMAP_USAGE_HINT_STREAM_READ  2
+#define XGL_PIXMAP_USAGE_HINT_STREAM_COPY  3
+#define XGL_PIXMAP_USAGE_HINT_STATIC_DRAW  4
+#define XGL_PIXMAP_USAGE_HINT_STATIC_READ  5
+#define XGL_PIXMAP_USAGE_HINT_STATIC_COPY  6
+#define XGL_PIXMAP_USAGE_HINT_DYNAMIC_DRAW 7
+#define XGL_PIXMAP_USAGE_HINT_DYNAMIC_READ 8
+#define XGL_PIXMAP_USAGE_HINT_DYNAMIC_COPY 9
+
+#define XGL_PIXMAP_USAGE_HINT_DEFAULT XGL_PIXMAP_USAGE_HINT_STREAM_DRAW
+
 PixmapPtr
 xglCreatePixmap (ScreenPtr  pScreen,
 		 int	    width,
 		 int	    height, 
 		 int	    depth);
 
+void
+xglFiniPixmap (PixmapPtr pPixmap);
+
 Bool
 xglDestroyPixmap (PixmapPtr pPixmap);
 
@@ -860,7 +881,7 @@ Bool
 xglCreatePixmapSurface (PixmapPtr pPixmap);
 
 Bool
-xglAllocatePixmapBits (PixmapPtr pPixmap);
+xglAllocatePixmapBits (PixmapPtr pPixmap, int hint);
 
 Bool
 xglMapPixmapBits (PixmapPtr pPixmap);
diff --git a/hw/xgl/xglcmap.c b/hw/xgl/xglcmap.c
index 69f43cb68..251616549 100644
--- a/hw/xgl/xglcmap.c
+++ b/hw/xgl/xglcmap.c
@@ -157,8 +157,8 @@ xglSetVisualTypesAndMasks (ScreenInfo	           *pScreenInfo,
 	    if (xglPbufferVisuals)
 	    {
 		xglPbufferVisuals[nxglPbufferVisuals].format  = format;
-		xglPbufferVisuals[nxglPbufferVisuals].pPixel  = pPixelFormat;
-		xglPbufferVisuals[nxglPbufferVisuals].visuals = visuals;
+		xglPbufferVisuals[nxglPbufferVisuals].pPixel  = NULL;
+		xglPbufferVisuals[nxglPbufferVisuals].visuals = 0;
 		nxglPbufferVisuals++;
 	    }
 	}
@@ -217,23 +217,6 @@ xglInitVisuals (ScreenInfo *pScreenInfo)
 				      rm, gm, bm);
 	}
     }
-
-#if 1
-    {
-	for (j = 0; j < nxglVisuals; j++)
-	{
-	    ErrorF ("Visual: 0x%x (%c) - r/g/b/a: %d/%d/%d/%d  db: %d\n",
-		    (int) xglVisuals[j].format->id,
-		    xglVisuals[j].format->types.pbuffer? 'y' : 'n',
-		    xglVisuals[j].format->color.red_size,
-		    xglVisuals[j].format->color.green_size,
-		    xglVisuals[j].format->color.blue_size,
-		    xglVisuals[j].format->color.alpha_size,
-		    xglVisuals[j].format->doublebuffer);
-	}
-    }
-#endif
-
 }
 
 void
diff --git a/hw/xgl/xglcopy.c b/hw/xgl/xglcopy.c
index a74a78c5e..2404597d3 100644
--- a/hw/xgl/xglcopy.c
+++ b/hw/xgl/xglcopy.c
@@ -158,12 +158,6 @@ xglCopyProc (DrawablePtr pSrc,
 
 	    pBox++;
 	}
-
-	if (pPixmapPriv->target == xglPixmapTargetIn)
-	{
-	    if (!xglSyncSurface (pDst))
-		FatalError (XGL_SW_FAILURE_STRING);
-	}
     } else
 	xglAddCurrentBitDamage (pDst);
 }
diff --git a/hw/xgl/xglparse.c b/hw/xgl/xglparse.c
index ed95680d1..1cf6bac89 100644
--- a/hw/xgl/xglparse.c
+++ b/hw/xgl/xglparse.c
@@ -105,6 +105,9 @@ xglUseMsg (void)
     ErrorF ("-vertextype [short|float] set vertex data type\n");
     ErrorF ("-vbostream             "
 	    "use vertex buffer objects for streaming of vertex data\n");
+    ErrorF ("-yinverted             Y is upside-down\n");
+    ErrorF ("-pbomask [1|4|8|16|32] "
+	    "set bpp's to use with pixel buffer objects\n");
 }
 
 int
@@ -148,6 +151,22 @@ xglProcessArgument (xglScreenInfoPtr pScreenInfo,
 	pScreenInfo->geometryUsage = GEOMETRY_USAGE_STREAM;
 	return 1;
     }
+    else if (!strcmp (argv[i], "-yinverted"))
+    {
+	pScreenInfo->yInverted = TRUE;
+	return 1;
+    }
+    else if (!strcmp (argv[i], "-pbomask"))
+    {
+	if ((i + 1) < argc)
+	{
+	    pScreenInfo->pboMask = atoi (argv[i + 1]);
+	}
+	else
+	    return 1;
+	
+	return 2;
+    }
     
     return 0;
 }
diff --git a/hw/xgl/xglpixmap.c b/hw/xgl/xglpixmap.c
index 0f8a0cc4a..7c3d29d7b 100644
--- a/hw/xgl/xglpixmap.c
+++ b/hw/xgl/xglpixmap.c
@@ -26,6 +26,24 @@
 #include "xgl.h"
 #include "fb.h"
 
+static glitz_buffer_hint_t xglPixmapUsageHints[] = {
+    (glitz_buffer_hint_t) 0,	    /* reserved for system memory */
+    GLITZ_BUFFER_HINT_STREAM_DRAW,
+    GLITZ_BUFFER_HINT_STREAM_READ,
+    GLITZ_BUFFER_HINT_STREAM_COPY,
+    GLITZ_BUFFER_HINT_STATIC_DRAW,
+    GLITZ_BUFFER_HINT_STATIC_READ,
+    GLITZ_BUFFER_HINT_STATIC_COPY,
+    GLITZ_BUFFER_HINT_DYNAMIC_DRAW,
+    GLITZ_BUFFER_HINT_DYNAMIC_READ,
+    GLITZ_BUFFER_HINT_DYNAMIC_COPY
+};
+
+#define NUM_XGL_PIXMAP_USAGE_HINTS				     \
+    (sizeof (xglPixmapUsageHints) / sizeof (xglPixmapUsageHints[0]))
+
+#define XGL_PIXMAP_USAGE_HINT(hint) (xglPixmapUsageHints[hint])
+
 static void
 xglPixmapDamageReport (DamagePtr pDamage,
 		       RegionPtr pRegion,
@@ -187,14 +205,11 @@ xglCreatePixmap (ScreenPtr  pScreen,
     return pPixmap;
 }
 
-Bool
-xglDestroyPixmap (PixmapPtr pPixmap)
+void
+xglFiniPixmap (PixmapPtr pPixmap)
 {
     XGL_PIXMAP_PRIV (pPixmap);
-	    
-    if (--pPixmap->refcnt)
-	return TRUE;
-
+        
     if (pPixmapPriv->pArea)
 	xglWithdrawArea (pPixmapPriv->pArea);
 	
@@ -215,6 +230,15 @@ xglDestroyPixmap (PixmapPtr pPixmap)
     
     if (pPixmapPriv->surface)
 	glitz_surface_destroy (pPixmapPriv->surface);
+}
+
+Bool
+xglDestroyPixmap (PixmapPtr pPixmap)
+{
+    if (--pPixmap->refcnt)
+	return TRUE;
+
+    xglFiniPixmap (pPixmap);
 
     xfree (pPixmap);
     
@@ -362,7 +386,6 @@ xglModifyPixmapHeader (PixmapPtr pPixmap,
 	glitz_surface_reference (pScreenPriv->surface);
 	
 	pPixmapPriv->surface = pScreenPriv->surface;
-	pPixmapPriv->pPixel  = pScreenPriv->pVisual[0].pPixel;
 	pPixmapPriv->target  = xglPixmapTargetIn;
 	
 	pScreenPriv->pScreenPixmap = pPixmap;
@@ -405,7 +428,8 @@ xglPixmapToGeometry (PixmapPtr pPixmap,
 	
 	if (!pPixmapPriv->buffer)
 	{
-	    if (!xglAllocatePixmapBits (pPixmap))
+	    if (!xglAllocatePixmapBits (pPixmap,
+					XGL_PIXMAP_USAGE_HINT_DEFAULT))
 		return NULL;
 	}
 	
@@ -476,11 +500,12 @@ xglCreatePixmapSurface (PixmapPtr pPixmap)
 }
 
 Bool
-xglAllocatePixmapBits (PixmapPtr pPixmap)
+xglAllocatePixmapBits (PixmapPtr pPixmap, int hint)
 {
     int width, height, bpp, stride;
     
     XGL_PIXMAP_PRIV (pPixmap);
+    XGL_SCREEN_PRIV (pPixmap->drawable.pScreen);
 
     width  = pPixmap->drawable.width;
     height = pPixmap->drawable.height;
@@ -490,22 +515,37 @@ xglAllocatePixmapBits (PixmapPtr pPixmap)
 
     if (stride)
     {
-	pPixmapPriv->bits = xalloc (height * stride);
-	if (!pPixmapPriv->bits)
-	    return FALSE;
-
-	pPixmapPriv->buffer =
-	    glitz_buffer_create_for_data (pPixmapPriv->bits);
-	if (!pPixmapPriv->buffer)
+	glitz_buffer_t *buffer;
+	
+	if ((pScreenPriv->pboMask & bpp) && hint)
 	{
-	    xfree (pPixmapPriv->bits);
+	    buffer = glitz_pixel_buffer_create (pScreenPriv->drawable,
+						NULL, height * stride,
+						XGL_PIXMAP_USAGE_HINT (hint));
+	}
+	else
+	{
+	    pPixmapPriv->bits = xalloc (height * stride);
+	    if (!pPixmapPriv->bits)
+		return FALSE;
+
+	    buffer = glitz_buffer_create_for_data (pPixmapPriv->bits);
+	}
+
+	if (!buffer)
+	{
+	    if (pPixmapPriv->bits)
+		xfree (pPixmapPriv->bits);
 	    pPixmapPriv->bits = NULL;
 	    return FALSE;
-	}	
+	}
+	pPixmapPriv->buffer = buffer;
     }
 
-    /* XXX: pPixmapPriv->stride = -stride */
-    pPixmapPriv->stride = stride;
+    if (pScreenPriv->yInverted)
+	pPixmapPriv->stride = stride;
+    else
+	pPixmapPriv->stride = -stride;
     
     return TRUE;
 }
@@ -520,7 +560,8 @@ xglMapPixmapBits (PixmapPtr pPixmap)
 	XGL_PIXMAP_PRIV (pPixmap);
 	
 	if (!pPixmapPriv->buffer)
-	    if (!xglAllocatePixmapBits (pPixmap))
+	    if (!xglAllocatePixmapBits (pPixmap,
+					XGL_PIXMAP_USAGE_HINT_DEFAULT))
 		return FALSE;
 	
 	bits = glitz_buffer_map (pPixmapPriv->buffer,
diff --git a/hw/xgl/xglscreen.c b/hw/xgl/xglscreen.c
index 0ccd772ee..0426c06f8 100644
--- a/hw/xgl/xglscreen.c
+++ b/hw/xgl/xglscreen.c
@@ -135,6 +135,7 @@ xglScreenInit (ScreenPtr        pScreen,
 	       xglScreenInfoPtr pScreenInfo)
 {
     xglScreenPtr pScreenPriv;
+    int		 depth;
     
 #ifdef RENDER
     PictureScreenPtr pPictureScreen;
@@ -152,15 +153,19 @@ xglScreenInit (ScreenPtr        pScreen,
     pScreenPriv->features =
 	glitz_drawable_get_features (pScreenInfo->drawable);
 
+    depth = pScreenPriv->pVisual->pPixel->depth;
+
     if (!xglInitOffscreen (pScreen, pScreenInfo))
 	return FALSE;
     
     xglInitPixmapFormats (pScreen);
-    if (!pScreenPriv->pixmapFormats[32].format)
+    if (!pScreenPriv->pixmapFormats[depth].format)
 	return FALSE;
     
     pScreenPriv->geometryDataType = pScreenInfo->geometryDataType;
     pScreenPriv->geometryUsage    = pScreenInfo->geometryUsage;
+    pScreenPriv->yInverted	  = pScreenInfo->yInverted;
+    pScreenPriv->pboMask	  = pScreenInfo->pboMask;
 
     GEOMETRY_INIT (pScreen, &pScreenPriv->scratchGeometry,
 		   GLITZ_GEOMETRY_TYPE_VERTEX,
@@ -168,7 +173,7 @@ xglScreenInit (ScreenPtr        pScreen,
     
     pScreenPriv->surface =
 	glitz_surface_create (pScreenPriv->drawable,
-			      pScreenPriv->pixmapFormats[32].format,
+			      pScreenPriv->pixmapFormats[depth].format,
 			      pScreenInfo->width, pScreenInfo->height,
 			      0, NULL);
     if (!pScreenPriv->surface)
@@ -283,7 +288,9 @@ xglFinishScreenInit (ScreenPtr pScreen)
 
     XGL_SCREEN_PRIV (pScreen);
 	
-    miInitializeBackingStore (pScreen);
+    /* Do we want to use BackingStore?
+       miInitializeBackingStore (pScreen);
+    */
 
     if (!fbCreateDefColormap (pScreen))
 	return FALSE;
@@ -348,7 +355,8 @@ xglCloseScreen (int	  index,
 		ScreenPtr pScreen)
 {
     XGL_SCREEN_PRIV (pScreen);
-
+    XGL_PIXMAP_PRIV (pScreenPriv->pScreenPixmap);
+    
 #ifdef RENDER
     int i;
     
@@ -362,6 +370,10 @@ xglCloseScreen (int	  index,
 	glitz_surface_destroy (pScreenPriv->trapInfo.mask);
 #endif
 
+    xglFiniPixmap (pScreenPriv->pScreenPixmap);
+    if (pPixmapPriv->pDamage)
+	DamageDestroy (pPixmapPriv->pDamage);
+
     if (pScreenPriv->solid)
 	glitz_surface_destroy (pScreenPriv->solid);
 
diff --git a/hw/xgl/xglshm.c b/hw/xgl/xglshm.c
index 574c1095a..020abd33f 100644
--- a/hw/xgl/xglshm.c
+++ b/hw/xgl/xglshm.c
@@ -64,7 +64,8 @@ xglShmPutImage (DrawablePtr  pDrawable,
 
 	    XGL_PIXMAP_PRIV (pPixmap);
 
-	    if (!xglAllocatePixmapBits (pPixmap))
+	    if (!xglAllocatePixmapBits (pPixmap,
+					XGL_PIXMAP_USAGE_HINT_DEFAULT))
 	    {
 		(*pScreen->DestroyPixmap) (pPixmap);
 		return;
diff --git a/hw/xgl/xglsync.c b/hw/xgl/xglsync.c
index 35c359482..1552419b1 100644
--- a/hw/xgl/xglsync.c
+++ b/hw/xgl/xglsync.c
@@ -80,7 +80,7 @@ xglSyncBits (DrawablePtr pDrawable,
 
     pBitBox = &pPixmapPriv->bitBox;
 
-    if (pExtents)
+    if (pPixmapPriv->target == xglPixmapTargetIn && pExtents)
     {
 	box.x1 = MAX (0, pExtents->x1);
 	box.y1 = MAX (0, pExtents->y1);
@@ -150,7 +150,7 @@ xglSyncBits (DrawablePtr pDrawable,
     }
 
     if (!pPixmapPriv->buffer)
-	if (!xglAllocatePixmapBits (pPixmap))
+	if (!xglAllocatePixmapBits (pPixmap, XGL_PIXMAP_USAGE_HINT_DEFAULT))
 	    return FALSE;
 
     if (pPixmapPriv->pDamage)
@@ -176,23 +176,24 @@ xglSyncBits (DrawablePtr pDrawable,
 	nBox = REGION_NUM_RECTS (&region);
 
 	format.masks = pPixmapPriv->pPixel->masks;
-
-	if (pPixmapPriv->stride < 0)
-	{
-	    format.bytes_per_line = -pPixmapPriv->stride;
-	    format.scanline_order = GLITZ_PIXEL_SCANLINE_ORDER_BOTTOM_UP;
-	}
-	else
-	{
-	    format.bytes_per_line = pPixmapPriv->stride;
-	    format.scanline_order = GLITZ_PIXEL_SCANLINE_ORDER_TOP_DOWN;
-	}
 	
 	while (nBox--)
 	{
-	    format.xoffset    = pBox->x1;
-	    format.skip_lines = pBox->y1;
-	    
+	    format.xoffset = pBox->x1;
+
+	    if (pPixmapPriv->stride < 0)
+	    {
+		format.skip_lines     = pPixmap->drawable.height - pBox->y2;
+		format.bytes_per_line = -pPixmapPriv->stride;
+		format.scanline_order = GLITZ_PIXEL_SCANLINE_ORDER_BOTTOM_UP;
+	    }
+	    else
+	    {
+		format.skip_lines     = pBox->y1;
+		format.bytes_per_line = pPixmapPriv->stride;
+		format.scanline_order = GLITZ_PIXEL_SCANLINE_ORDER_TOP_DOWN;
+	    }
+
 	    glitz_get_pixels (pPixmapPriv->surface,
 			      pBox->x1,
 			      pBox->y1,
@@ -254,17 +255,18 @@ xglSyncSurface (DrawablePtr pDrawable)
 	pBox = REGION_RECTS (pRegion);
 	pExt = REGION_EXTENTS (pDrawable->pScreen, pRegion);
 
-	format.masks	  = pPixmapPriv->pPixel->masks;
-	format.xoffset    = pExt->x1;
-	format.skip_lines = pExt->y1;
-	
+	format.masks   = pPixmapPriv->pPixel->masks;
+	format.xoffset = pExt->x1;
+
 	if (pPixmapPriv->stride < 0)
 	{
+	    format.skip_lines	  = pPixmap->drawable.height - pExt->y2;
 	    format.bytes_per_line = -pPixmapPriv->stride;
 	    format.scanline_order = GLITZ_PIXEL_SCANLINE_ORDER_BOTTOM_UP;
 	}
 	else
 	{
+	    format.skip_lines	  = pExt->y1;
 	    format.bytes_per_line = pPixmapPriv->stride;
 	    format.scanline_order = GLITZ_PIXEL_SCANLINE_ORDER_TOP_DOWN;
 	}
diff --git a/hw/xgl/xgltrap.c b/hw/xgl/xgltrap.c
index 48d228d35..b4c2878ca 100644
--- a/hw/xgl/xgltrap.c
+++ b/hw/xgl/xgltrap.c
@@ -66,17 +66,13 @@ xglCreateMaskPicture (ScreenPtr     pScreen,
     {
 	XGL_PIXMAP_PRIV (pPixmap);
 	
-	if (!xglAllocatePixmapBits (pPixmap))
+	if (!xglAllocatePixmapBits (pPixmap, XGL_PIXMAP_USAGE_HINT_DEFAULT))
 	{
 	    (*pScreen->DestroyPixmap) (pPixmap);
 	    return 0;
 	}
 
 	pPixmapPriv->target = xglPixmapTargetNo;
-
-	/* force negative stride */
-	if (pPixmapPriv->stride > 0)
-	    pPixmapPriv->stride = -pPixmapPriv->stride;
     }
     
     pGC = GetScratchGC (pPixmap->drawable.depth, pScreen);