eevee_motion_blur.hh

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/* SPDX-FileCopyrightText: 2022 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_map.hh"
#include "DEG_depsgraph_query.hh"
 
#include "eevee_sampling.hh"
#include "eevee_shader_shared.hh"
#include "eevee_velocity.hh"
 
namespace blender::eevee {
 
/* -------------------------------------------------------------------- */
class MotionBlurModule {
 private:
  Instance &inst_;
 
  Vector<float> time_steps_;
 
  int initial_frame_;
  float initial_subframe_;
  float frame_time_;
  int shutter_position_;
  float shutter_time_;
 
  bool enabled_ = false;
  bool motion_blur_fx_enabled_ = false;
  bool was_navigating_ = false;
 
  int step_id_ = 0;
 
  TextureFromPool tiles_tx_;
 
  GPUTexture *input_color_tx_ = nullptr;
  GPUTexture *output_color_tx_ = nullptr;
 
  PassSimple motion_blur_ps_ = {"MotionBlur"};
 
  MotionBlurTileIndirectionBuf tile_indirection_buf_;
  MotionBlurDataBuf data_;
  int3 dispatch_flatten_size_ = int3(0);
  int3 dispatch_dilate_size_ = int3(0);
  int3 dispatch_gather_size_ = int3(0);
 
 public:
  MotionBlurModule(Instance &inst) : inst_(inst){};
  ~MotionBlurModule(){};
 
  void init();
 
  void step();
 
  void sync();
 
  bool postfx_enabled() const
  {
    return motion_blur_fx_enabled_;
  }
 
  void render(View &view, GPUTexture **input_tx, GPUTexture **output_tx);
 
 private:
  float shutter_time_to_scene_time(float time);
};
 
}  // namespace blender::eevee