st/nine: Ignore multisample quality level if no ms

Apparently instead of returning error when passing
a quality level different than 0 for
D3DMULTISAMPLE_NONE, we should pass.

Fixes: https://github.com/iXit/Mesa-3D/issues/340

Cc: mesa-stable@lists.freedesktop.org

Signed-off-by: Axel Davy <davyaxel0@gmail.com>

src/gallium/state_trackers/nine/nine_pipe.h

@@ -377,6 +377,10 @@ d3dmultisample_type_check(struct pipe_screen *screen,
     if (levels)
         *levels = 1;
 
+    /* Ignores multisamplequality */
+    if (*multisample == D3DMULTISAMPLE_NONE)
+        return D3D_OK;
+
     if (*multisample == D3DMULTISAMPLE_NONMASKABLE) {
         if (depth_stencil_format(format))
             bind = d3d9_get_pipe_depth_format_bindings(format);