git update 10/7/2010

1 files changed, 18 insertions, 1 deletions

diff --git a/xorg-server/hw/xfree86/dri2/dri2.c b/xorg-server/hw/xfree86/dri2/dri2.c
index fbed587c2..9bf838e6c 100644
--- a/xorg-server/hw/xfree86/dri2/dri2.c
+++ b/xorg-server/hw/xfree86/dri2/dri2.c
@@ -82,6 +82,7 @@ typedef struct _DRI2Drawable {
     CARD64		 last_swap_msc; /* msc at completion of most recent swap */

     CARD64		 last_swap_ust; /* ust at completion of most recent swap */

     int			 swap_limit; /* for N-buffering */

+    unsigned long	 serialNumber;

 } DRI2DrawableRec, *DRI2DrawablePtr;

 

 typedef struct _DRI2Screen {

@@ -130,6 +131,19 @@ DRI2GetDrawable(DrawablePtr pDraw)
     }

 }

 

+static unsigned long

+DRI2DrawableSerial(DrawablePtr pDraw)

+{

+    ScreenPtr pScreen = pDraw->pScreen;

+    PixmapPtr pPix;

+

+    if (pDraw->type != DRAWABLE_WINDOW)

+	return pDraw->serialNumber;

+

+    pPix = pScreen->GetWindowPixmap((WindowPtr)pDraw);

+    return pPix->drawable.serialNumber;

+}

+

 static DRI2DrawablePtr

 DRI2AllocateDrawable(DrawablePtr pDraw)

 {

@@ -163,6 +177,7 @@ DRI2AllocateDrawable(DrawablePtr pDraw)
     pPriv->last_swap_msc = 0;

     pPriv->last_swap_ust = 0;

     list_init(&pPriv->reference_list);

+    pPriv->serialNumber = DRI2DrawableSerial(pDraw);

 

     if (pDraw->type == DRAWABLE_WINDOW) {

 	pWin = (WindowPtr) pDraw;

@@ -326,6 +341,7 @@ allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
 	|| !dimensions_match

 	|| (pPriv->buffers[old_buf]->format != format)) {

 	*buffer = (*ds->CreateBuffer)(pDraw, attachment, format);

+	pPriv->serialNumber = DRI2DrawableSerial(pDraw);

 	return TRUE;

 

     } else {

@@ -384,7 +400,8 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
     }

 

     dimensions_match = (pDraw->width == pPriv->width)

-	&& (pDraw->height == pPriv->height);

+	&& (pDraw->height == pPriv->height)

+	&& (pPriv->serialNumber == DRI2DrawableSerial(pDraw));

 

     buffers = malloc((count + 1) * sizeof(buffers[0]));