[Qemu-devel] [PATCH 1/3] vnc: fix server surface pixel format.

[Gerd Hoffmann <kraxel@redhat.com>]

Format must be identical to the guest surface, we can't work with
the 32 bpp used by the default surface allocator.

Without this patch vnc doesn't get the conversions right when sending
pixel data to the client.  The bug triggers if
  (a) the client doesn't support WMVi, and
  (b) the guest screen depth is != 32 bpp.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 vnc.c |   21 +++++++++------------
 1 files changed, 9 insertions(+), 12 deletions(-)

diff --git a/vnc.c b/vnc.c
index ab1f044..8b381c9 100644
--- a/vnc.c
+++ b/vnc.c
@@ -366,17 +366,13 @@ static void vnc_resize(VncState *vs)
     memset(vs->guest.dirty, 0xFF, sizeof(vs->guest.dirty));
 
     /* server surface */
-    if (!vs->server.ds) {
-        vs->server.ds = default_allocator.create_displaysurface(ds_get_width(ds),
-                                                                ds_get_height(ds));
-    } else {
-        default_allocator.resize_displaysurface(vs->server.ds,
-                                                ds_get_width(ds), ds_get_height(ds));
-    }
-    if (vs->server.ds->data == NULL) {
-        fprintf(stderr, "vnc: memory allocation failed\n");
-        exit(1);
-    }
+    if (!vs->server.ds)
+        vs->server.ds = qemu_mallocz(sizeof(*vs->server.ds));
+    if (vs->server.ds->data)
+        qemu_free(vs->server.ds->data);
+    *(vs->server.ds) = *(ds->surface);
+    vs->server.ds->data = qemu_mallocz(vs->server.ds->linesize *
+                                       vs->server.ds->height);
     memset(vs->server.dirty, 0xFF, sizeof(vs->guest.dirty));
 }
 
@@ -918,7 +914,8 @@ int vnc_client_io_error(VncState *vs, int ret, int last_errno)
         if (!vs->vd->clients)
             dcl->idle = 1;
 
-        default_allocator.free_displaysurface(vs->server.ds);
+        qemu_free(vs->server.ds->data);
+        qemu_free(vs->server.ds);
         qemu_free(vs->guest.ds);
         qemu_free(vs);
 
-- 
1.6.2.2