[Spice-devel] [PATCH qxl-win] miniport: disable surfaces by default

[Alon Levy]

Change the registry checking logic we already have, instead of enabling
surfaces by default we now disable surfaces by default. They can be
enabled without driver change by creating a registry key name
"SurfacesEnabled" of type DWORD with any value under the adapter key.

To find the adapter key, one way is looking for the key under which
there is a value of name "QxlDeviceID" after a successfull startup of
the qxl driver.
---
 xddm/miniport/qxl.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/xddm/miniport/qxl.c b/xddm/miniport/qxl.c
index 69d1b16..33efac7 100644
--- a/xddm/miniport/qxl.c
+++ b/xddm/miniport/qxl.c
@@ -1046,16 +1046,18 @@ static UINT8 check_non_primary_surfaces_registry_key(QXLExtension *dev_ext)
 
     ret = VideoPortGetRegistryParameters(
               dev_ext,
-              L"DisableSurfaces",
+              L"SurfacesEnabled",
               FALSE,
               QXLRegistryCallback,
               &key_ret);
     if (ret == ERROR_INVALID_PARAMETER) {
-        dev_ext->create_non_primary_surfaces = 1;
-        DEBUG_PRINT((dev_ext, 0, "%s: CreateNonPrimarySurfaces key doesn't exist, default to 1\n",
+        dev_ext->create_non_primary_surfaces = 0;
+        DEBUG_PRINT((dev_ext, 0, "%s: SurfacesEnabled key doesn't exist, disabling surfaces\n",
                     __FUNCTION__));
     } else {
-        dev_ext->create_non_primary_surfaces = 0;
+        dev_ext->create_non_primary_surfaces = 1;
+        DEBUG_PRINT((dev_ext, 0, "%s: SurfacesEnabled key exists, enabling surfaces\n",
+                    __FUNCTION__));
     }
     return dev_ext->create_non_primary_surfaces;
 }
-- 
1.8.3.1