wined3d: Introduce wined3d_device_get_cs_cb().

dlls/wined3d/device.c

@@ -2752,6 +2752,19 @@ void CDECL wined3d_device_set_cs_cb(struct wined3d_device *device, unsigned int
     wined3d_device_set_constant_buffer(device, WINED3D_SHADER_TYPE_COMPUTE, idx, buffer);
 }
 
+struct wined3d_buffer * CDECL wined3d_device_get_cs_cb(const struct wined3d_device *device, unsigned int idx)
+{
+    TRACE("device %p, idx %u.\n", device, idx);
+
+    if (idx >= MAX_CONSTANT_BUFFERS)
+    {
+        WARN("Invalid constant buffer index %u.\n", idx);
+        return NULL;
+    }
+
+    return device->state.cb[WINED3D_SHADER_TYPE_COMPUTE][idx];
+}
+
 void CDECL wined3d_device_set_cs_resource_view(struct wined3d_device *device,
         unsigned int idx, struct wined3d_shader_resource_view *view)
 {

dlls/wined3d/wined3d.spec

@@ -53,6 +53,7 @@
 @ cdecl wined3d_device_get_clip_status(ptr ptr)
 @ cdecl wined3d_device_get_compute_shader(ptr)
 @ cdecl wined3d_device_get_creation_parameters(ptr ptr)
+@ cdecl wined3d_device_get_cs_cb(ptr long)
 @ cdecl wined3d_device_get_depth_stencil_view(ptr)
 @ cdecl wined3d_device_get_device_caps(ptr ptr)
 @ cdecl wined3d_device_get_display_mode(ptr long ptr ptr)

include/wine/wined3d.h

@@ -2165,6 +2165,7 @@ HRESULT __cdecl wined3d_device_get_clip_status(const struct wined3d_device *devi
 struct wined3d_shader * __cdecl wined3d_device_get_compute_shader(const struct wined3d_device *device);
 void __cdecl wined3d_device_get_creation_parameters(const struct wined3d_device *device,
         struct wined3d_device_creation_parameters *creation_parameters);
+struct wined3d_buffer * __cdecl wined3d_device_get_cs_cb(const struct wined3d_device *device, unsigned int idx);
 struct wined3d_rendertarget_view * __cdecl wined3d_device_get_depth_stencil_view(const struct wined3d_device *device);
 HRESULT __cdecl wined3d_device_get_device_caps(const struct wined3d_device *device, WINED3DCAPS *caps);
 HRESULT __cdecl wined3d_device_get_display_mode(const struct wined3d_device *device, UINT swapchain_idx,