ED_node_preview.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_map.hh"
 
#include "RE_pipeline.h"
 
#include "IMB_imbuf.hh"
 
#include "DNA_material_types.h"
 
struct ImBuf;
struct SpaceNode;
struct bContext;
struct bNode;
struct bNodeTree;
struct wmWindowManager;
struct Render;
 
namespace blender::ed::space_node {
 
struct NestedTreePreviews {
  Render *previews_render = nullptr;
  blender::Map<int32_t, ImBuf *> previews_map;
  int preview_size;
  bool rendering = false;
  bool restart_needed = false;
  ePreviewType cached_preview_type = MA_FLAT;
  ePreviewType rendering_preview_type = MA_FLAT;
  uint32_t cached_previews_refresh_state = -1;
  uint32_t rendering_previews_refresh_state = -1;
  NestedTreePreviews(const int size) : preview_size(size) {}
  ~NestedTreePreviews()
  {
    if (this->previews_render) {
      RE_FreeRender(this->previews_render);
    }
    for (ImBuf *ibuf : this->previews_map.values()) {
      IMB_freeImBuf(ibuf);
    }
  }
};
 
void free_previews(wmWindowManager &wm, SpaceNode &snode);
ImBuf *node_preview_acquire_ibuf(bNodeTree &ntree,
                                 NestedTreePreviews &tree_previews,
                                 const bNode &node);
void node_release_preview_ibuf(NestedTreePreviews &tree_previews);
NestedTreePreviews *get_nested_previews(const bContext &C, SpaceNode &snode);
 
}  // namespace blender::ed::space_node