/*
 * Copyright 2011-2014 Blender Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __BAKE_H__
#define __BAKE_H__

#include "device/device.h"
#include "render/scene.h"

#include "util/util_progress.h"
#include "util/util_vector.h"

CCL_NAMESPACE_BEGIN

class BakeData {
 public:
  BakeData(const int object, const size_t tri_offset, const size_t num_pixels);
  ~BakeData();

  void set(int i, int prim, float uv[2], float dudx, float dudy, float dvdx, float dvdy);
  void set_null(int i);
  int object();
  size_t size();
  uint4 data(int i);
  uint4 differentials(int i);
  bool is_valid(int i);

 private:
  int m_object;
  size_t m_tri_offset;
  size_t m_num_pixels;
  vector<int> m_primitive;
  vector<float> m_u;
  vector<float> m_v;
  vector<float> m_dudx;
  vector<float> m_dudy;
  vector<float> m_dvdx;
  vector<float> m_dvdy;
};

class BakeManager {
 public:
  BakeManager();
  ~BakeManager();

  bool get_baking();
  void set_baking(const bool value);

  BakeData *init(const int object, const size_t tri_offset, const size_t num_pixels);

  void set_shader_limit(const size_t x, const size_t y);

  bool bake(Device *device,
            DeviceScene *dscene,
            Scene *scene,
            Progress &progress,
            ShaderEvalType shader_type,
            const int pass_filter,
            BakeData *bake_data,
            float result[]);

  void device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress &progress);
  void device_free(Device *device, DeviceScene *dscene);

  static int shader_type_to_pass_filter(ShaderEvalType type, const int pass_filter);
  static int aa_samples(Scene *scene, BakeData *bake_data, ShaderEvalType type);

  bool need_update;

  size_t total_pixel_samples;

 private:
  BakeData *m_bake_data;
  bool m_is_baking;
  size_t m_shader_limit;
};

CCL_NAMESPACE_END

#endif /* __BAKE_H__ */