eevee_motion_blur.hh

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/* SPDX-FileCopyrightText: 2022 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "DRW_gpu_wrapper.hh"
 
#include "eevee_motion_blur_shared.hh"
#include "eevee_sampling.hh"
 
#include "draw_pass.hh"
 
namespace blender::eevee {
 
using namespace draw;
 
/* -------------------------------------------------------------------- */
 
using MotionBlurDataBuf = draw::UniformBuffer<MotionBlurData>;
using MotionBlurTileIndirectionBuf = draw::StorageBuffer<MotionBlurTileIndirection, true>;

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_;
 
  gpu::Texture *input_color_tx_ = nullptr;
  gpu::Texture *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();
 
  /* Runs after rendering a sample. */
  void step();
 
  void sync();
 
  bool postfx_enabled() const
  {
    return motion_blur_fx_enabled_;
  }
 
  void render(View &view, gpu::Texture **input_tx, gpu::Texture **output_tx);
 
 private:
  float shutter_time_to_scene_time(float time);
};

 
}  // namespace blender::eevee