vk_copy_buffer_node.hh

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/* SPDX-FileCopyrightText: 2024 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "vk_node_info.hh"
 
namespace blender::gpu::render_graph {
struct VKCopyBufferData {
  VkBuffer src_buffer;
  VkBuffer dst_buffer;
  VkBufferCopy region;
};
 
class VKCopyBufferNode : public VKNodeInfo<VKNodeType::COPY_BUFFER,
                                           VKCopyBufferData,
                                           VKCopyBufferData,
                                           VK_PIPELINE_STAGE_TRANSFER_BIT,
                                           VKResourceType::BUFFER> {
 public:
  template<typename Node, typename Storage>
  static void set_node_data(Node &node, Storage & /* storage */, const CreateInfo &create_info)
  {
    node.copy_buffer = create_info;
  }

  void build_links(VKResourceStateTracker &resources,
                   VKRenderGraphNodeLinks &node_links,
                   const CreateInfo &create_info) override
  {
    ResourceWithStamp src_resource = resources.get_buffer(create_info.src_buffer);
    ResourceWithStamp dst_resource = resources.get_buffer_and_increase_stamp(
        create_info.dst_buffer);
    node_links.inputs.append(
        {src_resource, VK_ACCESS_TRANSFER_READ_BIT, VK_IMAGE_LAYOUT_UNDEFINED});
    node_links.outputs.append(
        {dst_resource, VK_ACCESS_TRANSFER_WRITE_BIT, VK_IMAGE_LAYOUT_UNDEFINED});
  }

  void build_commands(VKCommandBufferInterface &command_buffer,
                      Data &data,
                      VKBoundPipelines & /*r_bound_pipelines*/) override
  {
    command_buffer.copy_buffer(data.src_buffer, data.dst_buffer, 1, &data.region);
  }
};
}  // namespace blender::gpu::render_graph