wined3d: Introduce wined3d_device_get_ds_cb().

dlls/wined3d/device.c

@@ -2739,6 +2739,13 @@ void CDECL wined3d_device_set_ds_cb(struct wined3d_device *device, unsigned int
     wined3d_device_set_constant_buffer(device, WINED3D_SHADER_TYPE_DOMAIN, idx, buffer);
 }
 
+struct wined3d_buffer * CDECL wined3d_device_get_ds_cb(const struct wined3d_device *device, unsigned int idx)
+{
+    TRACE("device %p, idx %u.\n", device, idx);
+
+    return wined3d_device_get_constant_buffer(device, WINED3D_SHADER_TYPE_DOMAIN, idx);
+}
+
 void CDECL wined3d_device_set_ds_resource_view(struct wined3d_device *device,
         unsigned int idx, struct wined3d_shader_resource_view *view)
 {

dlls/wined3d/wined3d.spec

@@ -61,6 +61,7 @@
 @ cdecl wined3d_device_get_device_caps(ptr ptr)
 @ cdecl wined3d_device_get_display_mode(ptr long ptr ptr)
 @ cdecl wined3d_device_get_domain_shader(ptr)
+@ cdecl wined3d_device_get_ds_cb(ptr long)
 @ cdecl wined3d_device_get_gamma_ramp(ptr long ptr)
 @ cdecl wined3d_device_get_geometry_shader(ptr)
 @ cdecl wined3d_device_get_gs_cb(ptr long)

include/wine/wined3d.h

@@ -2215,6 +2215,7 @@ HRESULT __cdecl wined3d_device_get_device_caps(const struct wined3d_device *devi
 HRESULT __cdecl wined3d_device_get_display_mode(const struct wined3d_device *device, UINT swapchain_idx,
         struct wined3d_display_mode *mode, enum wined3d_display_rotation *rotation);
 struct wined3d_shader * __cdecl wined3d_device_get_domain_shader(const struct wined3d_device *device);
+struct wined3d_buffer * __cdecl wined3d_device_get_ds_cb(const struct wined3d_device *device, unsigned int idx);
 void __cdecl wined3d_device_get_gamma_ramp(const struct wined3d_device *device,
         UINT swapchain_idx, struct wined3d_gamma_ramp *ramp);
 struct wined3d_shader * __cdecl wined3d_device_get_geometry_shader(const struct wined3d_device *device);