render: reply with the server or client version, whichever is lower.

Protocol requires that the lower of [server version, client version] is returned to the client. The other part of the issue discussed in reply to [1] remains. [1] http://lists.freedesktop.org/archives/xorg-devel/2009-September/001990.html Reported-by: Julien Cristau Signed-off-by: Peter Hutterer <[email protected]>
juergbi · Sep 20, 2009 · 8b75d0f · 8b75d0f
1 parent 20ccc66
commit 8b75d0f
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/render/render.c b/render/render.c
@@ -270,8 +270,18 @@ ProcRenderQueryVersion (ClientPtr client)
     rep.type = X_Reply;
     rep.length = 0;
     rep.sequenceNumber = client->sequence;
-    rep.majorVersion = RENDER_MAJOR;
-    rep.minorVersion = RENDER_MINOR;
+
+    if ((stuff->majorVersion * 1000 + stuff->minorVersion) <
+        (RENDER_MAJOR * 1000 + RENDER_MINOR))
+    {
+	rep.majorVersion = stuff->majorVersion;
+	rep.minorVersion = stuff->minorVersion;
+    } else
+    {
+	rep.majorVersion = RENDER_MAJOR;
+	rep.minorVersion = RENDER_MINOR;
+    }
+
     if (client->swapped) {
     	swaps(&rep.sequenceNumber, n);
     	swapl(&rep.length, n);