nvk: support fills and clears and copies/blits

src/nouveau/vulkan/nvk_cmd_blit.c

@@ -246,6 +246,21 @@ nvk_CmdFillBuffer(
    }
 }
 
+VKAPI_ATTR void VKAPI_CALL
+nvk_CmdUpdateBuffer(
+   VkCommandBuffer commandBuffer,
+   VkBuffer dstBuffer,
+   VkDeviceSize dstOffset,
+   VkDeviceSize dataSize,
+   const void *pData)
+{
+   VK_FROM_HANDLE(nvk_cmd_buffer, cmd, commandBuffer);
+   VK_FROM_HANDLE(nvk_buffer, dst, dstBuffer);
+   struct nouveau_ws_push *push = cmd->push;
+
+   nouveau_ws_push_ref(push, dst->mem->bo, NOUVEAU_WS_BO_WR);
+}
+
 VKAPI_ATTR void VKAPI_CALL
 nvk_CmdClearColorImage(
    VkCommandBuffer commandBuffer,