wined3d: Introduce wined3d_device_flush().

dlls/wined3d/device.c

@@ -5106,6 +5106,13 @@ void CDECL wined3d_device_evict_managed_resources(struct wined3d_device *device)
     }
 }
 
+void CDECL wined3d_device_flush(struct wined3d_device *device)
+{
+    TRACE("device %p.\n", device);
+
+    wined3d_cs_emit_flush(device->cs);
+}
+
 static void update_swapchain_flags(struct wined3d_texture *texture)
 {
     unsigned int flags = texture->swapchain->state.desc.flags;

dlls/wined3d/wined3d.spec

@@ -53,6 +53,7 @@
 @ cdecl wined3d_device_draw_primitive_instanced_indirect(ptr ptr long)
 @ cdecl wined3d_device_end_scene(ptr)
 @ cdecl wined3d_device_evict_managed_resources(ptr)
+@ cdecl wined3d_device_flush(ptr)
 @ cdecl wined3d_device_get_available_texture_mem(ptr)
 @ cdecl wined3d_device_get_blend_state(ptr ptr)
 @ cdecl wined3d_device_get_clip_status(ptr ptr)

include/wine/wined3d.h

@@ -2334,6 +2334,7 @@ void __cdecl wined3d_device_draw_primitive_instanced_indirect(struct wined3d_dev
         struct wined3d_buffer *buffer, unsigned int offset);
 HRESULT __cdecl wined3d_device_end_scene(struct wined3d_device *device);
 void __cdecl wined3d_device_evict_managed_resources(struct wined3d_device *device);
+void __cdecl wined3d_device_flush(struct wined3d_device *device);
 UINT __cdecl wined3d_device_get_available_texture_mem(const struct wined3d_device *device);
 struct wined3d_blend_state * __cdecl wined3d_device_get_blend_state(const struct wined3d_device *device,
         struct wined3d_color *blend_factor);