wined3d: Introduce a wined3d_buffer_update_sub_resource() helper.

dlls/wined3d/buffer.c

@@ -1093,6 +1093,15 @@ void wined3d_buffer_copy(struct wined3d_buffer *dst_buffer, unsigned int dst_off
     context_release(context);
 }
 
+void wined3d_buffer_update_sub_resource(struct wined3d_buffer *buffer, struct wined3d_context *context,
+        const struct upload_bo *upload_bo, unsigned int offset, unsigned int size)
+{
+    if (upload_bo->addr.buffer_object && upload_bo->addr.buffer_object == (uintptr_t)buffer->buffer_object)
+        wined3d_context_flush_bo_address(context, &upload_bo->addr, size);
+    else
+        wined3d_buffer_copy_bo_address(buffer, context, offset, &upload_bo->addr, size);
+}
+
 static void wined3d_buffer_init_data(struct wined3d_buffer *buffer,
         struct wined3d_device *device, const struct wined3d_sub_resource_data *data)
 {

dlls/wined3d/cs.c

@@ -2742,13 +2742,8 @@ static void wined3d_cs_exec_update_sub_resource(struct wined3d_cs *cs, const voi
 
     if (resource->type == WINED3D_RTYPE_BUFFER)
     {
-        struct wined3d_buffer *buffer = buffer_from_resource(resource);
-        size_t size = box->right - box->left;
-
-        if (op->bo.addr.buffer_object && op->bo.addr.buffer_object == (uintptr_t)buffer->buffer_object)
-            wined3d_context_flush_bo_address(context, &op->bo.addr, size);
-        else
-            wined3d_buffer_copy_bo_address(buffer, context, box->left, &op->bo.addr, size);
+        wined3d_buffer_update_sub_resource(buffer_from_resource(resource),
+                context, &op->bo, box->left, box->right - box->left);
         goto done;
     }
 

dlls/wined3d/wined3d_private.h

@@ -5072,6 +5072,8 @@ BOOL wined3d_buffer_load_location(struct wined3d_buffer *buffer,
 BYTE *wined3d_buffer_load_sysmem(struct wined3d_buffer *buffer, struct wined3d_context *context) DECLSPEC_HIDDEN;
 BOOL wined3d_buffer_prepare_location(struct wined3d_buffer *buffer,
         struct wined3d_context *context, unsigned int location) DECLSPEC_HIDDEN;
+void wined3d_buffer_update_sub_resource(struct wined3d_buffer *buffer, struct wined3d_context *context,
+        const struct upload_bo *upload_bo, unsigned int offset, unsigned int size) DECLSPEC_HIDDEN;
 
 HRESULT wined3d_buffer_no3d_init(struct wined3d_buffer *buffer_no3d, struct wined3d_device *device,
         const struct wined3d_buffer_desc *desc, const struct wined3d_sub_resource_data *data,