image_state.hh

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/* SPDX-FileCopyrightText: 2021 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "BKE_image_wrappers.hh"
 
#include "image_batches.hh"
#include "image_buffer_cache.hh"
#include "image_partial_updater.hh"
#include "image_private.hh"
#include "image_shader_params.hh"
#include "image_texture_info.hh"
#include "image_usage.hh"
 
#include "DRW_render.hh"
#include "draw_command.hh"
#include "draw_manager.hh"
#include "draw_pass.hh"
 
namespace blender::image_engine {
using namespace blender::draw;
 
struct State {
  ::Image *image = nullptr;
  ImageUsage last_usage;
 
  PartialImageUpdater partial_update = {};
 
  View view = {"Image.View"};
  ShaderParameters sh_params;
  struct {
    bool do_tile_drawing : 1;
  } flags;
 
  Framebuffer depth_fb = {"Image.Depth"};
  Framebuffer color_fb = {"Image.Color"};
 
  PassSimple depth_ps = {"Image.Depth"};
  PassSimple image_ps = {"Image.Color"};

  FloatBufferCache float_buffers;

  float ss_to_texture[4][4];
 
  Vector<TextureInfo> texture_infos;
 
 public:
  virtual ~State() = default;
 
  void clear_need_full_update_flag()
  {
    reset_need_full_update(false);
  }
  void mark_all_texture_slots_dirty()
  {
    reset_need_full_update(true);
  }
 
  void update_batches()
  {
    for (TextureInfo &info : texture_infos) {
      BatchUpdater batch_updater(info);
      batch_updater.update_batch();
    }
  }
 
  void update_image_usage(const ImageUser *image_user)
  {
    ImageUsage usage(image, image_user, flags.do_tile_drawing);
    if (last_usage != usage) {
      last_usage = usage;
      reset_need_full_update(true);
      float_buffers.clear();
    }
  }
 
 private:
  void reset_need_full_update(bool new_value)
  {
    for (TextureInfo &info : texture_infos) {
      info.need_full_update = new_value;
    }
  }
};
 
}  // namespace blender::image_engine