Merge commit 'fa5103a02bd509e4a102afdad2ab26cb22210367'

5 files changed, 134 insertions, 19 deletions

diff --git a/dix/window.c b/dix/window.c
index 2676a546a..c7201df09 100644
--- a/dix/window.c
+++ b/dix/window.c
@@ -2303,6 +2303,9 @@ ConfigureWindow(WindowPtr pWin, Mask mask, XID *vlist, ClientPtr client)
     return(Success);
 
 ActuallyDoSomething:
+    if (pWin->drawable.pScreen->ConfigNotify)
+	(*pWin->drawable.pScreen->ConfigNotify)(pWin, x, y, w, h, bw, pSib);
+
     if (SubStrSend(pWin, pParent))
     {
 	memset(&event, 0, sizeof(xEvent));
diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c
index cd69ca0c4..48618e1a5 100644
--- a/hw/xfree86/dri2/dri2.c
+++ b/hw/xfree86/dri2/dri2.c
@@ -202,27 +202,25 @@ find_attachment(DRI2DrawablePtr pPriv, unsigned attachment)
     return -1;
 }
 
-static DRI2BufferPtr
+static Bool
 allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
 			 DRI2DrawablePtr pPriv,
 			 unsigned int attachment, unsigned int format,
-			 int dimensions_match)
+			 int dimensions_match, DRI2BufferPtr *buffer)
 {
-    DRI2BufferPtr buffer;
-    int old_buf;
-
-    old_buf = find_attachment(pPriv, attachment);
+    int old_buf = find_attachment(pPriv, attachment);
 
     if ((old_buf < 0)
 	|| !dimensions_match
 	|| (pPriv->buffers[old_buf]->format != format)) {
-	buffer = (*ds->CreateBuffer)(pDraw, attachment, format);
+	*buffer = (*ds->CreateBuffer)(pDraw, attachment, format);
+	return TRUE;
+
     } else {
-	buffer = pPriv->buffers[old_buf];
+	*buffer = pPriv->buffers[old_buf];
 	pPriv->buffers[old_buf] = NULL;
+	return FALSE;
     }
-
-    return buffer;
 }
 
 static DRI2BufferPtr *
@@ -238,6 +236,7 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
     int have_fake_front = 0;
     int front_format = 0;
     int dimensions_match;
+    int buffers_changed = 0;
     int i;
 
     if (!pPriv) {
@@ -256,8 +255,10 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
 	const unsigned attachment = *(attachments++);
 	const unsigned format = (has_format) ? *(attachments++) : 0;
 
-	buffers[i] = allocate_or_reuse_buffer(pDraw, ds, pPriv, attachment,
-					      format, dimensions_match);
+	if (allocate_or_reuse_buffer(pDraw, ds, pPriv, attachment,
+				     format, dimensions_match,
+				     &buffers[i]))
+		buffers_changed = 1;
 
 	/* If the drawable is a window and the front-buffer is requested,
 	 * silently add the fake front-buffer to the list of requested
@@ -287,15 +288,18 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
     }
 
     if (need_real_front > 0) {
-	buffers[i++] = allocate_or_reuse_buffer(pDraw, ds, pPriv,
-						DRI2BufferFrontLeft,
-						front_format, dimensions_match);
+	if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFrontLeft,
+				     front_format, dimensions_match,
+				     &buffers[i++]))
+	    buffers_changed = 1;
     }
 
     if (need_fake_front > 0) {
-	buffers[i++] = allocate_or_reuse_buffer(pDraw, ds, pPriv,
-						DRI2BufferFakeFrontLeft,
-						front_format, dimensions_match);
+	if (allocate_or_reuse_buffer(pDraw, ds, pPriv, DRI2BufferFakeFrontLeft,
+				     front_format, dimensions_match,
+				     &buffers[i++]))
+	    buffers_changed = 1;
+
 	have_fake_front = 1;
     }
 
@@ -324,7 +328,7 @@ do_get_buffers(DrawablePtr pDraw, int *width, int *height,
      * contents of the real front-buffer.  This ensures correct operation of
      * applications that call glXWaitX before calling glDrawBuffer.
      */
-    if (have_fake_front) {
+    if (have_fake_front && buffers_changed) {
 	BoxRec box;
 	RegionRec region;
 
diff --git a/include/Makefile.am b/include/Makefile.am
index d684f9c2b..eddc86cb3 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -27,6 +27,7 @@ sdk_HEADERS =		\
 	globals.h	\
 	input.h		\
 	inputstr.h	\
+	list.h		\
 	misc.h		\
 	miscstruct.h	\
 	opaque.h	\
diff --git a/include/list.h b/include/list.h
new file mode 100644
index 000000000..a126a652d
--- /dev/null
+++ b/include/list.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2010 Francisco Jerez <currojerez@riseup.net>
+ *
+ * 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 and this permission notice (including the next
+ * paragraph) 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ */
+
+#ifndef _LIST_H_
+#define _LIST_H_
+
+/* classic doubly-link circular list */
+struct list {
+    struct list *next, *prev;
+};
+
+static void
+list_init(struct list *list)
+{
+    list->next = list->prev = list;
+}
+
+static inline void
+__list_add(struct list *entry,
+	    struct list *prev,
+	    struct list *next)
+{
+    next->prev = entry;
+    entry->next = next;
+    entry->prev = prev;
+    prev->next = entry;
+}
+
+static inline void
+list_add(struct list *entry, struct list *head)
+{
+    __list_add(entry, head, head->next);
+}
+
+static inline void
+__list_del(struct list *prev, struct list *next)
+{
+    next->prev = prev;
+    prev->next = next;
+}
+
+static inline void
+list_del(struct list *entry)
+{
+    __list_del(entry->prev, entry->next);
+    list_init(entry);
+}
+
+static inline Bool
+list_is_empty(struct list *head)
+{
+    return head->next == head;
+}
+
+#ifndef container_of
+#define container_of(ptr, type, member) \
+    (type *)((char *)(ptr) - (char *) &((type *)0)->member)
+#endif
+
+#define list_entry(ptr, type, member) \
+    container_of(ptr, type, member)
+
+#define list_first_entry(ptr, type, member) \
+    list_entry((ptr)->next, type, member)
+
+#define __container_of(ptr, sample, member)				\
+    (void *)((char *)(ptr)						\
+	     - ((char *)&(sample)->member - (char *)(sample)))
+
+#define list_for_each_entry(pos, head, member)				\
+    for (pos = __container_of((head)->next, pos, member);		\
+	 &pos->member != (head);					\
+	 pos = __container_of(pos->member.next, pos, member))
+
+#endif
diff --git a/include/scrnintstr.h b/include/scrnintstr.h
index ab50e7a32..c42119d0d 100644
--- a/include/scrnintstr.h
+++ b/include/scrnintstr.h
@@ -399,6 +399,15 @@ typedef    void (* PostChangeSaveUnderProcPtr)(
 	WindowPtr /*pLayerWin*/,
 	WindowPtr /*firstChild*/);
 
+typedef    void (* ConfigNotifyProcPtr)(
+	WindowPtr /*pWin*/,
+	int /*x*/,
+	int /*y*/,
+	int /*w*/,
+	int /*h*/,
+	int /*bw*/,
+	WindowPtr /*pSib*/);
+
 typedef    void (* MoveWindowProcPtr)(
 	WindowPtr /*pWin*/,
 	int /*x*/,
@@ -581,6 +590,7 @@ typedef struct _Screen {
     MarkOverlappedWindowsProcPtr MarkOverlappedWindows;
     ChangeSaveUnderProcPtr	ChangeSaveUnder;
     PostChangeSaveUnderProcPtr	PostChangeSaveUnder;
+    ConfigNotifyProcPtr		ConfigNotify;
     MoveWindowProcPtr		MoveWindow;
     ResizeWindowProcPtr		ResizeWindow;
     GetLayerWindowProcPtr	GetLayerWindow;