diff -ru a/fb/fbpict.c b/fb/fbpict.c
--- a/fb/fbpict.c	2011-08-01 01:44:24.000000000 +0200
+++ b/fb/fbpict.c	2011-10-05 22:45:29.000000000 +0200
@@ -364,7 +364,7 @@
     ps->Glyphs = miGlyphs;
     ps->CompositeRects = miCompositeRects;
     ps->RasterizeTrapezoid = fbRasterizeTrapezoid;
-    ps->Trapezoids = fbTrapezoids;
+    ps->Trapezoids = miTrapezoids;
     ps->AddTraps = fbAddTraps;
     ps->AddTriangles = fbAddTriangles;
     ps->Triangles = fbTriangles;
diff -ru a/render/mipict.c b/render/mipict.c
--- a/render/mipict.c	2011-04-04 05:19:50.000000000 +0200
+++ b/render/mipict.c	2011-10-05 22:02:53.000000000 +0200
@@ -573,6 +573,67 @@
     }
 }
 
+void
+miTrapezoids (CARD8	    op,
+	      PicturePtr    pSrc,
+	      PicturePtr    pDst,
+	      PictFormatPtr maskFormat,
+	      INT16	    xSrc,
+	      INT16	    ySrc,
+	      int	    ntrap,
+	      xTrapezoid    *traps)
+{
+    ScreenPtr		pScreen = pDst->pDrawable->pScreen;
+    PictureScreenPtr    ps = GetPictureScreen(pScreen);
+
+    /*
+     * Check for solid alpha add
+     */
+    if (op == PictOpAdd && miIsSolidAlpha (pSrc))
+    {
+	for (; ntrap; ntrap--, traps++)
+	    (*ps->RasterizeTrapezoid) (pDst, traps, 0, 0);
+    } 
+    else if (maskFormat)
+    {
+	PicturePtr	pPicture;
+	BoxRec		bounds;
+	INT16		xDst, yDst;
+	INT16		xRel, yRel;
+	
+	xDst = traps[0].left.p1.x >> 16;
+	yDst = traps[0].left.p1.y >> 16;
+
+	miTrapezoidBounds (ntrap, traps, &bounds);
+	if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
+	    return;
+	pPicture = miCreateAlphaPicture (pScreen, pDst, maskFormat,
+					 bounds.x2 - bounds.x1,
+					 bounds.y2 - bounds.y1);
+	if (!pPicture)
+	    return;
+	for (; ntrap; ntrap--, traps++)
+	    (*ps->RasterizeTrapezoid) (pPicture, traps, 
+				       -bounds.x1, -bounds.y1);
+	xRel = bounds.x1 + xSrc - xDst;
+	yRel = bounds.y1 + ySrc - yDst;
+	CompositePicture (op, pSrc, pPicture, pDst,
+			  xRel, yRel, 0, 0, bounds.x1, bounds.y1,
+			  bounds.x2 - bounds.x1,
+			  bounds.y2 - bounds.y1);
+	FreePicture (pPicture, 0);
+    }
+    else
+    {
+	if (pDst->polyEdge == PolyEdgeSharp)
+	    maskFormat = PictureMatchFormat (pScreen, 1, PICT_a1);
+	else
+	    maskFormat = PictureMatchFormat (pScreen, 8, PICT_a8);
+	for (; ntrap; ntrap--, traps++)
+	    miTrapezoids (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, traps);
+    }
+}
+
 Bool
 miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
 {
@@ -656,7 +656,7 @@
     ps->Composite = 0;          /* requires DDX support */
     ps->Glyphs = miGlyphs;
     ps->CompositeRects = miCompositeRects;
-    ps->Trapezoids = 0;
+    ps->Trapezoids = miTrapezoids;
     ps->Triangles = 0;
 
     ps->RasterizeTrapezoid = 0; /* requires DDX support */
diff -ru a/render/mipict.h b/render/mipict.h
--- a/render/mipict.h	2011-04-04 05:19:50.000000000 +0200
+++ b/render/mipict.h	2011-10-05 22:06:19.000000000 +0200
@@ -129,6 +129,23 @@
 		      CARD32	    pixel,
 		      xRenderColor  *color);
 
+extern _X_EXPORT PicturePtr
+miCreateAlphaPicture (ScreenPtr	    pScreen, 
+		      PicturePtr    pDst,
+		      PictFormatPtr pPictFormat,
+		      CARD16	    width,
+		      CARD16	    height);
+
+extern _X_EXPORT void
+miTrapezoids (CARD8	    op,
+	      PicturePtr    pSrc,
+	      PicturePtr    pDst,
+	      PictFormatPtr maskFormat,
+	      INT16	    xSrc,
+	      INT16	    ySrc,
+	      int	    ntrap,
+	      xTrapezoid    *traps);
+
 extern _X_EXPORT Bool
 miIsSolidAlpha (PicturePtr pSrc);
 
diff -ru a/render/mitrap.c b/render/mitrap.c
--- a/render/mitrap.c	2011-04-04 05:19:50.000000000 +0200
+++ b/render/mitrap.c	2011-10-05 22:05:29.000000000 +0200
@@ -34,6 +34,55 @@
 #include "picturestr.h"
 #include "mipict.h"
 
+PicturePtr
+miCreateAlphaPicture (ScreenPtr	    pScreen, 
+		      PicturePtr    pDst,
+		      PictFormatPtr pPictFormat,
+		      CARD16	    width,
+		      CARD16	    height)
+{
+    PixmapPtr	    pPixmap;
+    PicturePtr	    pPicture;
+    GCPtr	    pGC;
+    int		    error;
+    xRectangle	    rect;
+
+    if (width > 32767 || height > 32767)
+	return 0;
+
+    if (!pPictFormat)
+    {
+	if (pDst->polyEdge == PolyEdgeSharp)
+	    pPictFormat = PictureMatchFormat (pScreen, 1, PICT_a1);
+	else
+	    pPictFormat = PictureMatchFormat (pScreen, 8, PICT_a8);
+	if (!pPictFormat)
+	    return 0;
+    }
+
+    pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, 
+					pPictFormat->depth, 0);
+    if (!pPixmap)
+	return 0;
+    pGC = GetScratchGC (pPixmap->drawable.depth, pScreen);
+    if (!pGC)
+    {
+	(*pScreen->DestroyPixmap) (pPixmap);
+	return 0;
+    }
+    ValidateGC (&pPixmap->drawable, pGC);
+    rect.x = 0;
+    rect.y = 0;
+    rect.width = width;
+    rect.height = height;
+    (*pGC->ops->PolyFillRect)(&pPixmap->drawable, pGC, 1, &rect);
+    FreeScratchGC (pGC);
+    pPicture = CreatePicture (0, &pPixmap->drawable, pPictFormat,
+			      0, 0, serverClient, &error);
+    (*pScreen->DestroyPixmap) (pPixmap);
+    return pPicture;
+}
+
 static xFixed
 miLineFixedX (xLineFixed *l, xFixed y, Bool ceil)
 {